Icom Service Manual Dual Band FM Transceiver IC-32A IC-32AT IC-32 E

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O 
ICOM 


SERVICE 
MANUAL 


DUAL BAND FM TRANSCEIVER 


IC-32AT 
iG—32E 


Icom Inc. 


4? 


37 


INTRODUCTION 


This service manual describes the latest service informa- 
tion for the IC-32A/AT/E DUAL BAND FM TRANSCEIVER 
at the time of going to press. 


Six versions of the IC-32A/AT/E have been designed. 
This service manual covers each version. 


FREQUENCY TUNING 
VERSION RANGE STEP 
NO. VERSION [MHz] [kHz] 


oh 
ane 430~440 


(IC-32AT) 


INITIAL 
OFFSET 
[MHz] 


7.6 | Tone call 
5.0 | CTCSS/DTMF 


CTCSS/DTMF 


ENCODERS 


Tone call 


DANGER 


NEVER connect the transceiver to an AC outlet or to a 
DC power supply that uses more than 16V. This will 
ruin the transceiver. 


DO NOT expose the transceiver to rain, snow or any 
liquids. 


DO NOT reverse the polarities of the power supply when 
connecting the transceiver. 


DO NOT apply an RF signal of more than 20dBm 
(100 mW) to the antenna connector. This could damage 
the transceiver’s front end. 


REPAIR NOTE 


1. Make sure a problem is internal before disassembling 
the transceiver. 

2. DO NOT open the transceiver until the transceiver is 
disconnected from a power source. 

3. DO NOT force any of the variable components. Turn 
them slowly and smoothly. 

4. DO NOT short any circuits or electronic parts. An 
insulated tuning tool MUST be used for all adjust- 
ments. 

5. DO NOT keep power ON for a long time when the 
transceiver is defective. 

6. DO NOT transmit power into a signal generator or a 
sweep generator. 

7. ALWAYS connect a 30 dB~40 dB attenuator between 
the transceiver and a deviation meter or spectrum 
analyzer when using such test equipment. 

8. READ the instructions of test equipment thoroughly 
before connecting equipment to the transceiver. 


E 
eS 


The picture shows the IC-32AT. 


ORDERING PARTS 


Be sure to include the following four points when ordering 
replacement parts: 


1. Component part number and name 

2. Equipment model name and unit name 

3. 10-digit order numbers for mechanical parts 
4. Quantity required 


<SAMPLE ORDER> 


IC uPD4094BG IC-32A MAINUNIT — 2 pieces 
Screw PHBO2x31.5ZK IC-32E Frontpanel 8810004000 4 pieces 


Addresses are provided on the inside back cover for 
your convenience. 


SECTION 
SECTION 


SECTION 
SECTION 


SECTION — 


SECTION 


SECTION 


SECTION 
SECTION 


SECTION 


a 


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NOOO FP WD — 


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ar won — 


TABLE OF CONTENTS 


SPECIFICATIONS .....:.......... «eae eae a FREI BAT ALA 1—1 
OUTSIDE AND INSIDE VIEWS................... 0022 e eee eee eee 2—1~4 
OUTSIDE VIEWS... ...........-4..... eanteeeh . hood. eyed SUASBOL oat. 16-2 | 
INSIDE VIEWS... .. cc ccncer ashes isccissnvsr ss so) Bag io leanne Drea 
BLOCK DIAGRAM .:.... 2. 6:40.52 Pov rrr ce ee a 
CIRCUIT GESCRIPTION......4.....b...... oimarteme ace ee eee 4—1~6 
RECEIVERBOIRCUITS «oc ccc ccd cs vocals « stipe )GN, h Sibeg Sepak eh 2 eee ee A =e 
TRANSMUMBER CIRCUITS: .c5 0 oo Bis ct eet in xe ee ee A eat? 
VHESPLISMBCUITS: ccc 5 eke oe Ee oe ee Aas 
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POWER GaeeLy CIRCUITS =: 3) bead Ee A 
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GPU EORTALLOCATIONS (LOGIC;}UNIT) +. snuwets. ae. :o0-)-as, zn lueectte Ld ee 4—5 
MECHANICAL PARTS AND DISASSEMBLY............................ 5—1~4 
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MAINTENANCE AND ADJUSTMENT ..............................02.. 6—1~6 
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RF UNIT (2)5 .'so0 en oii Oe kes Sok le i cee ae ti 
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VCO UNITS hin 24 is Sian ew ee oe ee 7==11 
TONE UNIT CSO oo Ra OI a oe eee ize 
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OPTIONAL UNITS 2m .9! s142 08... .. onitdreezecib. orgies laropmni. ¢, mekigig 9—1~4 
UT-40 TONE SQUELCH UNIT CIRCUIT DESCRIPTION .............0cccceeeeeeeees G —. { 
UT-40 VOLTAGE/CIRCUIL DIAGRAM ge... 20. oc co eee ey. 
LIT-40 BOABD LAY OW Siete ate he a kre ae 0 est 
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SECTION 1 


SPECIFICATIONS 


mi GENERAL 


e Frequency coverage 


VERSION 


GUARANTEED 
RANGE 


TRANSCEIVER 


IC-32A/AT (U.S.A. version) 


IC-32A (Australia version) 


144.00 ~ 148.00 
440.00 ~ 450.00 


OPERATIONAL RANGE 


RECEIVER 


TRANSMITTER 


138.00 ~ 174.00 
440.00 ~ 450.00 


144.00 ~ 148.00 
430.00 ~ 440.00 


IC-32AT (Asia version) 


144.00 ~ 148.00 
430.00 ~ 440.00 


IC-32E (Europe version) 


144.00 ~ 146.00 
430.00 ~ 440.00 


IC-32E (Italy version) 


144.00 ~ 148.00 
430.00 ~ 440.00 


144.00 ~ 148.00 
430.00 ~ 440.00 


140.00 ~ 150.00 
440.00 ~ 450.00 


144.00 ~ 148.00 
430.00 ~ 440.00 


138.00 ~ 174.00 
430.00 ~ 440.00 


140.00 ~ 150.00 
430.00 ~ 440.00 


144.00 ~ 146.00 
430.00 ~ 440.00 


144.00 ~ 146.00 
430.00 ~ 440.00 


138.00 ~ 174.00 
430.00 ~ 440.00 


140.00 ~ 150.00 
430.00 ~ 440.00 


(Unit: MHz) 


® Mode 
e Tuning step increment 


F3 (FM) 


IC-32A/AT 5, 10, 15, 20, or 25 kHz ; 
IC-32E 12.5 or 25 kHz 


50 Q unbalanced 
5.5~ 16.0 V DC (from the bottom terminal) 
12.0~ 16.0 V DC (from [DC IN 13.8 V] jack) 


DESCRIPTION 
Power saved typical 


e Antenna impedance 
© Power supply requirement 


e Current drain (at 13.2 V DC) TX/RX 


Receive 
Max. audio output 


HIGH power 


Transmit 


LOW power 


—10°C~ +60°C (+14°F ~ +140°F) 
+10 ppm (— 10°C ~ +60°C, +14°F ~ +140°F) 


e Usable temperature range 
e Frequency stability 


e Dimensions and weight WEIGHT 
ATTACHED BATTERY PACK we 2 | 5 Unit: g (Ib) 
With BP-70 (U.S.A. version) 65 (2.6) 180.5 (7.1) 35 (1.4) 590 (1.3) 
With BP-4 (Asia version) 65 (2.6) 169.0 (6.7) 35 (1.4) 545 (1.2) 


65 (2.6) 159.0 (6.3) 35 (1.4) 510 (1.1) 


With BP-3 (Other versions) 


Mi TRANSMITTER 


¢ Output power 


Variable reactance frequency modulation 


e Modulation system 


e Max. frequency deviation ao KHZ 
e¢ Spurious emissions Less than —60 dB 
e Microphone impedance 2 kQ 
Mi RECEIVER 
e Receive system Double-conversion superheterodyne 
e Intermediate frequencies - ist. .30.875 MHZ 2nd 455 kHz 
e Sensitivity Less than 0.25 uV for 12 dB SINAD 
e Squelch sensitivity (threshold) Less than 0.158 pV 
© Selectivity Less than +7.5 kHz/—6 dB 


More than +15 kHz/—60 dB 

Less than —60 dB 

Less than —50 dB 

More than 400 mW at 10 % distortion with an 8 Q load 
8Q 


e Spurious response rejection 
© Intermodulation rejection 

e Audio output power 

e Audio output impedance 


All stated specifications are subject to change without notice or obligation. 


:—39 


SECTION 2 OUTSIDE AND INSIDE VIEWS 


2-1 OUTSIDE VIEWS 
¢ TOP PANEL 


(@) POWER/VOLUME CONTROL [PWR/VOL] 
@) SQUELCH CONTROL [SQUELCH] 
@) MAIN DIAL [MAIN DIAL] 
@ RF OUTPUT POWER SWITCH [H/L] 
EE. 6) ANTENNA CONNECTOR 
Gy. © EXTERNAL SPEAKER JACK [EXT SP] 
sau| cH @) EXTERNAL MICROPHONE JACK [MIC] 
EXTERNAL DC POWER JACK [DC IN 13.8 V] 
@) 0) @) 
e FRONT AND SIDE PANELS 
SEZ 
© ISF @) TRANSMIT INDICATOR [TX] 
@ \) | @) FUNCTION DISPLAY 
I gees @ KEYBOARD 
® Ne SSS) @ SPEAKER 
g les 3 (6) MICROPHONE 
t= : © MONITOR SWITCH [MONITOR] 
@ lh, ——_ A (@ FUNCTION SWITCH [FUNCTION] 
6 ee PTT SWITCH 
Sere @ LIGHT SWITCH [LIGHT] 
ee BATTERY PACK RELEASE BUTTON [RELEASE] 
N 


() FREQUENCY DISPLAY 
| ale @ TS INDICATOR “TS” 
Seyi @) MEMORY MODE INDICATOR “M” 
@ — 3) @) MEMORY CHANNEL INDICATOR 
‘g-—@ ©) DUPLEX INDICATORS “—” “DUP” 
ems TSPROG | © FULL DUPLEX INDICATOR “SPT” 
oe @ PROGRAMMED SCAN INDICATOR “PROG” 
PRIORITY WATCH INDICATOR “PRIO” 
Q@ ® 
(15) ©) 
| alls @ TONE AND SQUELCH INDICATORS “T” “SQL” 
if Dean MEMORY SKIP INDICATOR “SKIP” 
wmrrnrnn = (@ S/RF INDICATOR 
re TT ig (2 TONE SETTING INDICATOR “TO” 
TOOW (3 OFFSET FREQUENCY WRITE INDICATOR “OW” 
(co), ma) ene wars waa a oO) (4 POCKET BEEP INDICATOR “(((«)))” 
(5 LOCK INDICATOR “L” 
@ @ 


2-2 INSIDE VIEWS 
¢ LOGIC UNIT 


Low voltage comparator/ 
SRF indicator comparator 
(IC904: LA6393M) 


CPU 

(IC902 : uPD75308GF-100-3B9) CPU clock 
(X902 CR227) 

DTMF encoder (IC-32AT only) 

(IC901 : LR40872) Initial matrix 


e MAIN UNIT 


Shift register 
(1\C701 : w~PD4094BG) 


Lithium backup battery 


5 V regulator 
(IC705: S81250HG) 


-T5 V regulator circuit 
+5S regulator circuit 


AF power amp 
(IC702: BA526) 


R5 V regulator circuit 


Mic amp 


(IC706: M5218FP) 2nd IF circuit 


TONE UNIT 


(IC-32AT only) 2nd LO crystal 


(X701 : CR214) 


e RF UNIT 


UHF power module 
(VHF power module is located 
under this module.) UHF bandpass filter 


VHF bandpass filter 


VHF VCO UNIT UHF VCO UNIT 


1st IF circuit 


PLL UNIT 
(Both VHF and UHF PLL 
circuits are included in this case.) 


PLL reference crystal 
(X203: CR247) 


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SECTION 3 


SECTION 4 


CIRCUIT DESCRIPTION 


4-1 RECEIVER CIRCUITS 


4-1-1 ANTENNA SWITCHING CIRCUIT 
(RF UNIT) 


Received signals enter the ANTENNA CONNECTOR (J210) 
and pass through a low-pass filter (L222, L223 and C354 
~C358). The low-pass filter is designed to filter signals 
higher than 450 MHz. 


To separate VHF and UHF signals, a low-pass filter 
(L226~L228, C376~C240) for VHF and a high-pass filter 
(L220, L221, C346~C350) for UHF are included. 


The VHF antenna switching circuit employs a A/4-type 
diode switching system consisting of D205, D219, L206, 
L207 and C244~C246. While receiving, D205 and D219 
turn OFF and receive signals are applied to the VHF RF 
amplifier circuit. 


The UHF antenna switching circuit consists of D201, 
D216, L214 and C283~C285. While receiving, D212 and 
D216 turn OFF and receive signals are applied to the 
UHF RF amplifier circuit. 


4-1-2 VHF RF CIRCUIT (RF UNIT) 


VHF receive signals from the antenna switching circuit 
pass through a bandpass filter consisting of D204, L205, 
C241 and C242. The signals are then amplified at the 
VHF RF amplifier (Q203). Amplified signals pass through 
a bandpass filter consisting of D202, D203, C231, C233, 
C236, L203 and L204. 


4-1-3 VHF 1ST MIXER CIRCUIT 
(RF AND V-VCO UNITS) 


Filtered signals are mixed with the 1st LO signal from 
the V-VCO UNIT at the VHF 1st mixer (Q202) for conver- 
sion to 30.875 MHz 1st IF signals. 


4-1-4 UHF RF CIRCUIT (RF UNIT) 


UHF receive signals from the antenna switching circuit 
pass through a high-pass filter (C281, C282 and L212) and 
are then amplified at the UHF RF amplifiers (Q210 and 
Q211). Bandpass filters (L210 and L211) suppress out- 
of-band signals. 


4-1-5 UHF 1ST MIXER CIRCUIT 
(RF AND U-VCO UNITS) 
The filtered signals are mixed with UHF 1st LO signals 


from the U-VCO UNIT at the UHF 1st mixer (Q209) for 
conversion to 30.875 MHz 1st IF signals. 


4-1-6 1ST IF CIRCUIT (RF AND MAIN UNITS) 


1st IF signals in both the VHF and UHF bands utilize the 
same frequency (30.875 MHz), and the same 1st IF circuit 
is used. 


1st IF signals from Q209 (UHF) or Q202 (VHF) are 
applied to a pair of mechanical crystal filters (Fl202) 
which determine receiver selectivity. 1st IF signals 
amplified at Q201 are applied to an FM IC chip (IC707) 
on the MAIN UNIT. 


IC707 contains the oscillator, mixer, limiter amplifier, and 
quadrature detector circuits. 1st IF signals from the RF 
UNIT are applied to pin 20 of IC707. Signals are mixed 
with the 2nd LO signal at the mixer section for conver- 
sion to 455 kHz 2nd IF signals. 


2nd IF signals are output from pin 4 and pass through . 
FI701 for removal of unwanted heterodyned signals. The 
filtered signals re-enter at pin 6 and are amplified in the 
limiter amplifier section. Amplified signals are detected 
at the quadrature detector section using ceramic resonator 
X702 for conversion to audio signals. 


IF CIRCUIT 


to AF 
circuit 


[SQUELCH] 
control 


roping Fe 


to noise 


detector R+5S 


~~ st IF signal 


C743. ~—«from RF UNIT 


IC707 
TK10420M 


- to S-indicator 


amplifier 


Fig. 1 


4-1-7 AF CIRCUIT 
(MAIN, EF AND LOGIC UNITS) 


AF signals from pin 11 of IC707 are applied to a de- 
emphasis circuit (R724 and C732) and are amplified 
at Q706 and Q709. The de-emphasis circuit is an inte- 
grator circuit with frequency characteristics of —6 dB/ 
oct. 


Amplified signals pass through the AF mute switch (Q703) 
and VOLUME CONTROL (R151), and are then applied to 
the AF power amplifier (1C702). 


The AF power amplifier (IC702) amplifies signals to drive 
the speaker (SP901). 


4-1-8 SQUELCH CIRCUIT 
(MAIN AND EF UNITS) 


A portion of signals from pin 11 of IC707 is applied to 
active filter pin 12 of IC707. The SQUELCH CONTROL 
(R152) is connected to the active filter input to control 
the input level. The active filter amplifies noise com- 
ponents of 20 kHz or more. 


The noise components output from pin 14 are then 
rectified by D703 for conversion to DC voltage. When 
this voltage is at a “HIGH” level, Q708 turns ON, and 
Q705 turns OFF. Thus Q701 and Q702, the power 
source circuit of AF power amplifier |C702, is deactivated. 


While transmitting, R+5S is not applied to Q705, thus 
the power source circuit (Q701 and Q702) is deactivated. 


4-2 TRANSMITTER CIRCUITS 


4-2-1 MICROPHONE AMPLIFIER CIRCUIT 
(MAIN UNIT) 


AF signals from microphone MC901 or from the EXTER- 
NAL MICROPHONE JACK (J203) are amplified at a 
limiter amplifier (pin 3 of IC706). This limiter amplifier 
is formed by a negative feedback circuit with frequency 
characteristics set at +6 dB/oct. This causes the limiter 
amplifier to function as a pre-emphasis circuit. 


AF signals from the limiter amplifier (pin 1 of IC706) are 
applied to a splatter filter (pin 6 of IC706) for removing 
harmonic distortion components higher than 3 kHz. The 
output signal from the splatter filter (pin 7 of IC706) is 
applied to D552 through R781 (VHF) or applied to D501 
through R779 (UHF) for performing frequency modulation. 


4-2-2 VHF BUFFER AMPLIFIER CIRCUIT 
(V-VCO AND RF UNITS) 


VHF signals from the V-VCO UNIT are amplified at buffer 
amplifiers Q553 and Q223, pass through transmit and 
receive switching diode D218, and are amplified at driver 
Q229, thus obtaining drive power. 


4-2-3 VHF POWER AMPLIFIER CIRCUIT 
(RF UNIT) 


Amplified signals at Q229 are power amplified at C207 
and obtain more than 5.5 W (when HIGH is selected) or 
1 W (when LOW is selected). Output power from IC207 
passes through an antenna switching circuit (D219) and 
a low-pass filter, and then is applied to the ANTENNA 
CONNECTOR (J210). 


4-2-4 UHF BUFFER AMPLIFIER CIRCUIT 
(U-VCO AND RF UNITS) 


UHF signals from the U-VCO UNIT are amplified at buffer 
amplifiers Q501 and Q221, pass through transmit and 
receive switching diode D215 and are amplified at driver 
amp Q224, thus obtaining drive power. 


4-2-5 UHF POWER AMPLIFIER CIRCUIT 
(RF UNIT) 


Amplified signals at Q224 are power amplified at 1C206 
and obtain more than 5W (when HIGH is selected) or 
1 W (when LOW is selected). Output power from IC206 
passes through an antenna switching circuit (D216), a 
high-pass filter and a low-pass filter, and then is applied 
to the ANTENNA CONNECTOR (J210). 


4-2-6 APC CIRCUIT (RF UNIT) 


The APC circuit protects the power modules (IC206 and 
1C207) from a mismatched output load and selects HIGH 
and LOW output power. 


The output power level from the power module (IC206 or 
IC207) is detected at the APC detector (D217). When 
antenna impedance is matched at 50Q, the detected 
level is at a minimum. However, when antenna imped- 
ance is mismatched, the detected voltage is higher than 
when matched. 


When the antenna impedance is mismatched, the base 
voltage of Q228 is higher than the other base voltage of 
Q228 (reference voltage). Q228 decreases the collector 
current of Q226 using Q227. Q226 collector current is 
used at the driver amplifier (Q224 or Q229). Hence, when 
the antenna impedance is mismatched, output power is 
decreased. 


APC CIRCUIT 
from APC u 
detector D217 ty 
Vcc 
R309 
to Q224 0226 s 
R336 , O R320 R321 
to Q229 4 p 
ee = 
Q227 i en) ¢> aa: & 
> ah [Hil] oO 
“ay L-=|--/=-4 switch 
° 
= 
I Q228 x 
to CPU 
Fig. 2 


The output power selecting circuit uses the APC circuit. 
The [H/L] switch on the top panel selects the reference 
voltage, changing output power to HIGH or LOW. 


4-3 VHF PLL CIRCUITS 


4-3-1 GENERAL (RF AND V-VCO UNITS) 


The VHF PLL circuit uses a one chip PLL IC (IC205) 
which contains a programmable divider, phase detector, 
data shift register and data latch circuits. IC205 controls 
the VHF VCO oscillating frequency using varicap diodes 
D553 and D554. The VHF VCO oscillating frequency is 
used as a VHF transmitting frequency while transmitting 
or as a VHF 1st LO signal while receiving. 


The oscillated signal at the VHF VCO circuit is buffer 
amplified at Q551 and Q222, and is applied to pin 8 of 
IC205. IC205 divides the signal using N-data from the 
CPU (IC902) and phase detects the divided signal using 
the reference oscillator signal. The phase detected 
signal is converted to a DC voltage (lock voltage) by the 
charge pump and loop filter. The lock voltage is applied 
to varicap diodes D553 and D554 in the VHF VCO circuit 
to control the VCO oscillating frequency. A _ stable, 
desired frequency is thus obtained by this loop. 


VHF PLL CIRCUIT BLOCK DIAGRAM 


CHARGE PUMP 


LOOP FILTER 


OUTPUT 
Ref. freq. 


Fig. 3 


4-3-2 REFERENCE OSCILLATOR CIRCUIT 
(RF UNIT) 


Q212 and X203 oscillate a 10.0 MHz signal. The signal is 
divided in the divider inside C205 to obtain the reference 
frequency. The reference frequency, 6.25 kHz or 5 kHz, 
is determined by the IC205 dividing ratio using N-data 
from the CPU (IC902) to obtain selectable tuning steps 
of 5°10,°12:5)'45, 20'or 25°KHz. 


4-3-3 CHARGE PUMP AND LOOP FILTER 
CIRCUITS (RF UNIT) 


The phase detected signals output from pins 5 and 12 of 
IC205 are pulse signals. These signals are converted to 
DC voltage by the charge pump (Q217 and Q219) and the 
loop filter (R283, R284, R303, C314, C331 and C333). 


Q230 and Q236 form the charge pump control circuit 
which cuts off charge pump output. Signals are not 
applied to the VCO circuit while the power saver is 
activated. Q218 is a DC amplifier which amplifies the 
lock voltage to tune the center frequency of the VHF 
bandpass filter. 


4-3-4 VCO CIRCUIT (V-VCO UNIT) 


The VCO (Variable Control Oscillator) circuit oscillates 
the 1st LO frequency in receive mode and transmit 
frequency in transmit mode. The VCO free-run frequency 
is shifted by D551 using C556. +The generated frequency 
is controlled by D553 and D554 using the lock voltage 
output from the loop filter. 


4-4 UHF PLL CIRCUITS 


4-4-1 GENERAL (RF AND U-VCO UNITS) 


The UHF VCO circuits use a PLL IC (IC203) and a swallow 
counter (IC204). 


IC203 controls the UHF VCO oscillating frequency using 
varicap diode D501. The UHF VCO oscillating frequency 
is used as a UHF transmitting frequency while transmit- 
ting or as a UHF 1st LO signal while receiving. 


The oscillated signal at the UHF VCO circuit is buffer 
amplified at Q503, and is applied to pin 1 of IC204. 
1C204 divides the signal either 1/64 or 1/65. The divided ~ 
signal is then applied to pin 9 of 1C203. 10204 divides 
the signal using the N-data from the CPU (IC902) and 
phase detects the divided signal using the reference 
oscillator signal. The phase detected signal is converted 
to a DC voltage (lock voltage) by the charge pump 
and loop filter. The lock voltage is applied to varicap 
diode D501 in the UHF VCO circuit to control the VCO 
oscillating frequency. A stable desired frequency is thus 
obtained by this loop. 


4-4-2 REFERENCE OSCILLATOR CIRCUIT 
(RF UNIT) 


Q212 and X203 oscillate a 10.0 MHz signal. The signal 
is divided in the divider inside |C203 to obtain the refer- 
ence frequency. The reference frequency, 6.25 kHz or 
5 kHz, is determined by the IC203 dividing ratio using 
N-data from the CPU (IC902) to obtain selectable tuning 
steps of 5, 10, 12.5, 15, 20 or 25 kHz. 


4-4-3 CHARGE PUMP AND LOOP FILTER 
CIRCUITS (RF UNIT) 


The phase detected signals output from pins 19 and 21 
of IC203 are pulse signals. These signals are converted 
to a DC voltage by the charge pump (Q237, Q238 and 
Q239) and the loop filter (C309, C310, R276, R277, R292 
and C508). 


Q215 and Q216 form the charge pump control circuit 
which cuts off charge pump output. Signals are not 
applied to the VCO circuit while the power saver is 
activated. 


4-4-4 VCO CIRCUIT (U-VCO UNIT) 


The VCO (Variable Control Oscillator) circuit oscillates the 
1st LO frequency in receive mode and transmit frequency 
in transmit mode. The VCO free run frequency is shifted 
by D502. The generated frequency is controlled by 


_ D501 using the lock voltage output from the loop filter. 


4-5 POWER SUPPLY CIRCUITS 
4-5-1 VOLTAGE LINES (MAIN UNIT) 


LINE DESCRIPTION 

Vcc Battery pack voltage or external DC power that 
1C207), the AF power amp. regulator, and the 
following 5 V lines. 


passes through the POWER CONTROL (R151). 
Vcc is applied to the power modules (IC206 or 


+5 Common 5 V current amplified at Q720 and Q721 
using IC705 output as a reference voltage. 
+558 5 V controlled by the power saver function. 
Current amplified at Q712 and Q713. 
R+5S 5 V controlled by the power saver function. 
Current amplified at Q716 and Q717. Used by 
the receive circuits. 


5 V current amplified at Q714 and Q715. Used 
by the transmitter circuits. 


4-5-2 VOLTAGE REGULATOR CIRCUIT 
(MAIN UNIT) 


When the battery voltage is 5.5~16V, the regulator 
(IC705) outputs a reference voltage of 5V. The noise 
components are removed by the noise filter (C785, R756). 
_ This output is applied to the current amplifier (Q720, 
Q721). 


4-5-3 CPU POWER SOURCE CIRCUIT 
(MAIN UNIT) 


When the transceiver is turned OFF, a voltage is applied 
to IC902 (CPU) from lithium backup battery BT701. 


4-5-4 T+5/R+5S SWITCHING CIRCUIT 
(MAIN AND LOGIC UNITS) 


When the PTT switch (S703) is pushed, Q724 is turned 
ON. The collector of Q725 outputs a “LOW” signal to 
pin 64 of 1C902 (CPU). 


Pin 40 of IC902 sends transmit data to IC701. Pin 12 
of IC701 outputs a “HIGH” signal. Pin 11 of IC701 
outputs a “LOW” signal to pin 13 of IC703c, controlling 
the base of Q717. Thus, R5+S is turned OFF. Pin 12 
of IC701 outputs a “HIGH” signal to pin 1 of IC703e, 
controlling the base of Q715. Thus T+5 is turned ON. 


4-6 OTHER CIRCUITS 


4-6-1 SUBAUDIBLE TONE ENCODER UNIT 
(TONE UNIT) (IC-32AT only) 


IC601 generates subaudible tones. A generated tone is 
made via the dividing oscillator, and a dividing ratio is 
controlled by 6-bit data from a shift resistor (IC602). 
R601 adjusts deviation. 


4-6-2 DTMF ENCODER CIRCUIT 
(MAIN AND LOGIC UNITS) (IC-32AT only) 


The DTMF encoder (IC901), generates Dual Tone Multi 
Frequencies. If any key on the KEYBOARD is pushed 
while transmitting, the proper frequency dividing ratio for 
the frequency of X901 (3.58 MHz) is selected. One set of 
audio frequencies corresponding to row input and column 
input is then output from pin 17. 


Also, a “HIGH” level signal is output from pin 11 of 
IC901 when the KEYBOARD is activated. This level is 
applied to an integrator circuit (R750, R754 and C773) 
in the MAIN UNIT to obtain a time constant of approx. 1 
sec. for turning Q719 ON. Thus transmission continues 
during keying. 


4-6-3 TONE CALL CIRCUIT (MAIN UNIT) 
(IC-32E only) 


This circuit generates a 1750 Hz tone to open a repeater. 
When the TONE CALL switch (R152) is pushed, Q718 is 
turned ON and T+5 voltage is applied to IC704. 1IC704 
divides 7.1680 MHz by 4096 and outputs 1750 Hz tones 
from pin 4. R748 adjusts deviation. 


4-6-4 S/RF-INDICATOR CIRCUIT 
(MAIN AND LOGIC UNITS) 


A portion of signals passed from FI701 is amplified at 
the S-indicator amplifier (Q711, Q710), and is detected 
at voltage doubler (D705). The voltage from D705 or 
APC detector voltage from D222 is applied to indicator 
comparator pin 2 of |C904b. 


The signal passes through an integrator circuit (R933 and 
C908); the voltage at pin 3 of IC904 increases with time. 
When the voltage at pin 3 is greater than pin 2, pin 1 
outputs “HIGH.” The voltage of pin 3 of IC904 depends 
on time. IC902 measures the time during which pin 49 
outputs “HIGH” and pin 50 receives “HIGH.” The S/RF- 
INDICATOR, DS904, is for indicating the relative signal 
strength or output power. 


S/RF INDICATOR CIRCUIT 


+58 


4-6-5 LAMP CIRCUIT (LOGIC UNIT) When the power saver function starts, pin 47 of IC902 


(CPU) outputs a power saver signal (IOST) as in the follow- 


When the eee hl le: Se is pushed, pin 46 of ing timing diagram. A +5M signal from pin 13 of IC701 
IC902 (CPU) siguabeossr Wile Be eo So lL specen al oh controls +5S signals; RX5 signals from pin 11 control 
this signal is amplified at Q905 and Q906 to illuminate R+5S signals. 


backlights DS902 and DS903. 


lf the LIGHT switch is pushed again when pin 46 is in 4-6-7 LOW VOLTAGE DETECTED CIRCUIT 
a “HIGH” condition, pin 46 returns to “LOW” when (LOGIC UNIT) 


switches are not being used. 
This circuit consists of IC904a, R928 and R926. 1.16 V 


is applied to pin 5 of IC904a. The Vcc voltage is divided 
4-6-6 POWER SAVER CIRCUIT (MAIN UNIT) by R926 and R928, and the divided voltage is applied to 
pin 6 of IC904a. When the Vcc voltage exceeds 5.7 V, 
the voltage at pin 6 becomes greater than that at pin 5 
and pin 7 becomes ‘‘LOW.” When the Vcc voltage is 
less than 5.7 V, the voltage at pin 5 exceeds that at pin 6 
and pin 7 outputs in a “HIGH” condition. TRANSMIT 
INDICATOR DS901 does not light even when transmitting. 


The power saver function starts after approx. 30 sec. when 
no switch is pushed and the squelch is closed, or when 
the transceiver is in receive mode. 


4-7 CPU PORT ALLOCATIONS (LOGIC UNIT) 


PORT NO. | PINNO. | DESCRIPTION PORT NO. | INNO. | DESCRIPTION 
RESET When a “LOW” signal is applied, CPU | P33 53 Input port for acknowledge signal 
IC902 is initialized. [ENC] 


whether the tone encoder IC601 is 
POO Detects a signal for the standby mode 
[INT4] 


38 connected or not. 
of the CPU. The CPU enters the 
PO1 39 
40 
41 


the trailing edge of a signal. P50~P53 34~37 | These are output ports for strobe 
[KSO~KS3] signals for the initial and keyboard 
matrices. 


Outputs a serial data output clock for 
PLL N-data, subaudible tones, and t/O 
expander data. 


ie P60 
PO2 Outputs serial data synchronized with | [UNLKLV] 
[DATA] CK signals. 
Mane Input port for an acknowledge signal 


PO3 Inputs a squelch signal. When the 
[BUSY] squelch opens, a ‘“‘HIGH”’ signal is | P61 61 
applied. [DET] in the optional UT-40 TONE 
PO10~P013 42~45 | Input ports for the initial matrix. SE ee 
[KIRO~KIR3] “HIGH” when the tone squelch 
opens. 


P40~P43 29~32 These are input ports for the 
standby mode when the port reads [KRO~KR3] keyboard matrices. 
| [CK] 


Input port for a PLL unlock signal. 
Normally this port is “LOW.” When 
the PLL is unlocked the port receives 
“HIGH” signals. 


OUIDUTS CORY nere P62 Input port for the down signal of the 
LAMPO FUNCTION DISPLAY intensity. 
! = [DIAL DN] MAIN DIAL (S151). 
P21 47 Outputs a strobe signal for serial data : 
[IOSTB] to the output expander. P63 Input port for the up signal of the 
[DIAL UP] 
49 
1 


Input signal on the PTT line. This 


port receives “HIGH” signals when 


MAIN DIAL (S151). 
P22 48 Ouiputs a strobe signal for serial data 
[CTSTB] to the subaudible tone encoder or P70 64 
optional UT-40 TONE SQUELCH UPN) s4e 
UNIT. the PTT switch is pushed. 
P23 Outputs a reference voltage for the ie 
[SRFO] S/RF INDICATOR. [FUNC] ($702). 
P30 50 Inputs a comparated signal for the P72 Fd Input port for the MONITOR switch 
[SRFI] S/RF INDICATOR. [MONI] ($151). 
P31 5 67 Input port for the LIGHT switch 
[HI/LO] [LAMP] (S701). 
BP6 19 Outputs a strobe signal for the VHF 
P32 52 {[PLSL] PLL IC (IC205). 
[ENC/DEC] BP7 20 Outputs a strobe signal for the UHF 
[PLSH] PLL IC (IC203). 


P73 


Output port for the RF INDICATOR. 
This port becomes “HIGH” when 
HIGH output power is selected. 


Input port for acknowledge signal 
which acknowledges whether the 
optional UT-40 TONE SQUELCH UNIT 
is connected or not. 


1/0 EXPANDER IC701 (MAIN UNIT) 


PORT NO. DESCRIPTION 
Q1 eh. Outputs a “HIGH” signal when the 
[SQL OFF] MONITOR switch (S701) is pushed. 
Q2 5 Outputs an AF mute signal when 
[RMUTE] 
Q 
Q 


the optional UT-40’s pocket beep 
4 7 
[BEEPO] 


function is activated. 
S 
[+5M] 


Outputs 500 Hz or 1 kHz beep 
tones. 

Q7 12 

[TX5] 


Outputs a square wave during the 
power saver condition. When this 
port is “HIGH,” a +5S signal is cut 
Orme 

Q8 11 

(RX5] 


Outputs ‘‘HIGH”’ signals during 
transmissions. Controls the T+5 
line. 


Outputs square waves during the 
power saver condition. When this 
port is ‘‘HIGH,” the R+5S line is 
CULOFE 


1/0 EXPANDER 1IC202 (RF UNIT) 


PORT NO. DESCRIPTION 
1 Outputs “LOW” signals when the 
[BANDL] VHF band is selected. 


. 
Q2 S Outputs ‘““LOW” signals during VHF 
(TXL] band transmission. 
Q3 Outputs ‘‘LOW” signals during VHF 
[RXL] band reception. 
4 


Q i Outputs square waves during the 
[CPCL] power saver condition. Outputs 
“1 OW” signals when the VHF band 
is selected and during the power 
saver condition. 

Q5 14 Outputs “LOW” signals when the 

{[BANDH] VHF band is selected. 

Qs Outputs “HIGH” signals during 

[TXH] UHF band transmission. 

Q7 12 Outputs “HIGH” signals during 

[RXH] UHF band reception. 

; 


8 Outputs square waves during the 
[CPCH] power saver condition. When this 
port is ‘‘HIGH,” the VLV line is cut 
OFF: 


SECTION 5 


LABELLED 
NUMBER 


5-1 MECHANICAL PARTS 


DESCRIPTION 


PH BO 2x 31.5 ZK 


ORDERING 
NUMBER 


8810004000 


MECHANICAL PARTS AND DISASSEMBLY 


575 Rear panel 


8010007140 


575 PTT rubber 


8930012400 


PTT plates 


8930011600 


PTT holder 


8930013110 


PTT button 


8930011910 


PH No. 0-3 M2x6 ZK 


8810004890 


pO} —)—) ro ym] omy] 


PH BO No. 0-3 M1.4*3.5 ZK 


8810001710 


A 
rSy 


Plate (SP) 


8930012760 


PH BO No. 0-1 M2x4 


8810004800 


575 Front ground plate 


8930013300 


SP plate 


8930012100 


562 Keyboard (A) 


8010007150 


573 MIC holder 


8930011930 


SP seal 


8930011580 


@|@|@/@/O|SO/O/©|@|G/@/@|@|@/E/O 


573 Casing seal (center) 


8930012410 


575 Front panel (A) (IC-32E) 


575 Front panel (C) (IC-32A) 


8210003300 


8210003320 


ee ee | Se fa ie Sl ee ee te 


Knob (MAIN) N128 


8610004290 


Knobs (SQUELCH, PWR/VOL) N126 


8610004230 


VR nuts (E) 


8830000550 


PH M2x6 ZK 


8810004860 


Connector seal 


8930012420 


575 Top panel-1 (IC-32A/AT) 
575 Top panel (A)-1 (IC-32E) 


8210003200 
8210003210 


Top seal 


8930012390 


Seal plate 


8930012300 


PH No. 0-3 M1.4x3.5 ZK 


8810001710 


PH No. 0-1 M2x 2.5 


8810004870 


LCD holder 


8930012190 


LCD reflector 


6910002060 


PH M2~x4 Ni FE 


PH M2x3 Ni FE 


8810005320 


8810004950 


573 standoff 


8930012081 


PH M2x8 Ni FE 


8810004950 


PH M2.6 x 10 Ni 


8810004730 


Plate 


8930012280 


Screw lug M2 


8860000010 


Contact holder 


8930011880 


BuH M2x6 Ni BS 


8810002580 


Latch plate (B) 


8930013430 


Sliding guide 


8010006990 


FH M2x4 Ni BS 


8810002310 


Release button (A) 


8930008610 


PH M25 Ni 


8810005310 


@ 
20) 
a) 
22) 
23) 
24) 
a) 
26) 
wy 
29 
80) 
cD 

82) 
83) 
4) 
8) 
88) 
cy) 
cD) 
® 


Screw type 


Screw head style 


Connection spring 


Screw: M2x3, etc. _Self-tapping screw: BO 2 15, etc. 


PH: Pan head FH: Flat head 


BuH: Button head 


5 ¥ 


8930005980 


Precision type screw: No. 0-1, etc. 


e MAIN UNIT 


e CASE AND CHASSIS 


e LOGIC UNIT 


LW 


WN 


y y 
\ € Y 
\ LN 4 
f Cy) 


\y \ 


SECTION 5 


LABELLED 
NUMBER 


5-1 MECHANICAL PARTS 


DESCRIPTION 


PH BO 2x 31.5 ZK 


ORDERING 
NUMBER 


8810004000 


MECHANICAL PARTS AND DISASSEMBLY 


575 Rear panel 


8010007140 


575 PTT rubber 


8930012400 


PTT plates 


8930011600 


PTT holder 


8930013110 


PTT button 


8930011910 


PH No. 0-3 M26 ZK 


8810004890 


po;—s) —)] mois) as] 


PH BO No. 0-3 M1.4x3.5 ZK 


8810001710 


— 
a8 


Plate (SP) 


8930012760 


PH BO No. 0-1 M2 x4 


8810004800 


575 Front ground plate 


8930013300 


SP plate 


8930012100 


562 Keyboard (A) 


8010007150 


573 MIC holder 


8930011930 


SP seal 


893001 1580 


@|@/@/|@/@O|O/O/O©|@|G/@/©|@|@/9/O 


573 Casing seal (center) 


8930012410 


575 Front panel (A) (IC-32E) 


575 Front panel (C) (IC-32A) 


8210003300 


8210003320 


a fie ed ee ed ee” Ue Se er 


Knob (MAIN) N128 


8610004290 


Knobs (SQUELCH, PWR/VOL) N126 


8610004230 


VR nuts (E) 


8830000550 


PH M2x6 ZK 


8810004860 


Connector seal 


8930012420 


575 Top panel-1 (IC-32A/AT) 


8210003200 
8210003210 


575 Top panel (A)-1 (IC-32E) 
Top seal 


8930012390 


Seal plate 


8930012300 


PH No. 0-3 M1.4*3.5 ZK 


8810001710 


PH No. 0-1 M2x* 2.5 


8810004870 


LCD holder 


8930012190 


LCD reflector 


6910002060 


PH M2~x4 Ni FE 


8810005320 


PH M2x3 Ni FE 


8810004950 


573 standoff 


8930012081 


PH M2~x8 Ni FE 


8810004950 


PH M2.6 x 10 Ni 


8810004730 


Plate 


8930012280 


Screw lug M2 


8860000010 


Contact holder 


8930011880 


BuH M26 Ni BS 


8810002580 


Latch plate (B) 


8930013430 


Sliding guide 


8010006990 


FH M2x4 Ni BS 


8810002310 


Release button (A) 


8930008610 


PH M2 x5 Ni 


8810005310 


@ 
20 
a) 
22) 
23) 
24) 
2) 
26) 
wy) 
29) 
cD) 
cD) 
82) 
83) 
2) 
$5) 
86) 
8) 
89) 
2) 
) 
2) 


4) 


Screw type 


Screw head style 


Connection spring 


Screw: M23, etc. _Self-tapping screw: BO 2x 15, etc. 


PH: Pan head FH: Flat head 


BuH: Button head 


o— 1 


8930005980 


Precision type screw: No. 0-1, etc. 


¢ MAIN UNIT 


¢ TOP PANEL 


¢ CASE AND CHASSIS 


¢ RF UNIT 


ES o 

2 

2a is 
2 2 
® 

Ae) 


Solder poi 


e LOGIC UNIT 


e CONTACT HOLDER 


e LCD 
LCD 
Contact strip 
SRCN-575 


° BP-3 


LABELLED 
NUMBER 


DESCRIPTION 


Rear plate (A) 


ORDERING 
NUMBER 


8310004260 


FH M2x5 


8810002060 


Rear case (3) F (supplied BP-3) 
Rear case (3) B (optional BP-3) 


8010002300 
8010002780 


Se INS | ook 


Charging jack metal (A) 


8930005740 


Isolating washer (J) 


8850000850 


Charger jack metal (B) 


8930005750 


Charger jack metal (C) 


8930006130 


Isolating washer 


Square nut 


8850000310 


8930007370 


Plate spring 


8930004670 


LED (SCLC26UR) 


5040000160 


Sliding metal (D) 


8930007220 


PH BO 2x4 


8810000980 


FFH M2x8 


Charger terminal (D) 


8810004660 


8930006240 


Spring (A) 


8930007220 


Isolating seat 


® 
2) 
® 
® 
© 
© 
® 
® 
OD) 
@ 
iE) 
©) 
©) 
©) 


Front case (3) E (supplied BP-3) 
Front case (3) A (optional BP-3) 


8930005400 


8010002290 
8010002760 


Name plate 


8310002550 


a eS eS ee Sm De = eS Se eS SS Cd ee Cad ee Ca Gee a ee 


Charging metal 


8010001920 


®|O|O|© 


; 


PH BO 2x4 


8810000980 


Charging selector plate (B) 


FFH M2~x 4 Ni 


8930002150 


8810004671 


SOLOS © 


Nh } —/N| NM] —s] — 


e BP-5A, BP-7, BP-8, BP-70 


(ABELLED DESCRIPTION ORDERING 

Name plate BP-5A 8310006970 1 

Ce a SE or er ce errs acre ye ees cts ae ene eerie a eee oe 

aNarhe piso BE gia we «A Pe ee ee 8310012080 =| tt” ‘leecaal 
Front case (7) A (BP-5A, BP-7, BP-8) 8010002860 1 

a Front casero? Wee cA eee ee go10007030—s—‘“‘O#;*‘<;‘:;é IMT OW. 
® Charge jack (A) HECO779-01-030 [ 6450000240 { 
@ LED (SLB23VR5F) 5040000390 1 
6) Sliding metal (D) 8930007220 1 
© PH BO 2x4 8810000980 4 
® Charging terminal (D) ‘| 8930006240 E 1 
4 Spring (A) | 8930007220 1 
Q) FFH M2x8 8810004660 2 
Rubber cap (for jack A) 8930001740 1 
Rear case (7) B (BP-5A, BP-7, BP-8) | 3010002870 1 

o Hear ase (9) B (BE 70 | nna | goioo07040—t—é‘l;’C#tS*é‘;*‘*;*# mA 
@ FFH M2x4 Ni | 8810004671 D 
i= Charging selector plate (B) (BP-5A, BP-7, BP-8) 8930002150 1 

«3 Charging-celectonpiare@) (270) mi ae aeeneee g930012830 sid} tiduiia 
Plate spring 8930004670 1 
(5) Charger jack (B) HEC1737-01-020 6450000230 1 
he PH BO 2x4 8810000980 2 
(Dy) Charging metal a 8010001920 2 
Rubber cap (for jack B) 8930001750 1 
PH BO 2x15 ZK 8810004910 2 


©) 


@©00Q® © © 


©) 


5-2 BATTERY PACK 
¢ BP-2 AND BP-5 


LABELLED 
NUMBER DESCRIPTION 


Rear plate (B) 8310004310 
ay one hd eh nc i. 8010002750 
Pane) BBP) fe ee! ACoGResde A re. tc) 
Sliding metal (E) 8010004230 
PH BO 2x4 8810000980 
Oy Front case (3) A (BP-2) 8010002760 
HomemetrAiees 5) 4 6-8) |! SOKOGGPS20 NA fd) 
ay Name plate BP-2 8310002540 


Name plate BP-5 8310002570 
Charging metal 8010001920 


— 


—/|! ph} | 


—_s+]} 


one 


i 


PH BO 2x4 8810000980 
Sponge (O) 8930001440 
Charging selector plate (B) 8930002150 


FFH M2~x4 Ni 8810004671 


° BP-3 


LABELLED ORDERING 
NUMBER | DESCRIPTION NUMBER 


Rear plate (A) 8310004260 


FH M2x5 8810002060 


Rear case (3) F (supplied BP-3) 8010002300 


Rear case (3) B (optional BP-3) 8010002780 


Charging jack metal (A) 8930005740 


Isolating washer (J) 8850000850 


Charger jack metal (B) 8930005750 


Charger jack metal (C) 8930006130 
Isolating washer 8850000310 


Square nut 8930007370 


Plate spring 8930004670 


LED (SCLC26UR) 5040000160 


Sliding metal (D) 8930007220 


8810000980 


PH BO 2x4 
FFH M2x8 8810004660 


Charger terminal (D) 8930006240 


Spring (A) 8930007220 
Isolating seat 8930005400 


Front case (3) E (supplied BP-3) 8010002290 
Front case (3) A (optional BP-3) 8010002760 


Name plate 8310002550 


Charging metal 8010001920 


PH BO 2x4 8810000980 


Charging selector plate (B) | 8930002150 


® 
@ 
® 
® 
© 
© 
® 
® 
® 
® 
® 
@ 
® 
® 
@ 
a 
® 
@ 
@ 


FFH M2~x4 Ni 8810004671 


SO©8@EQ8 © 


e BP-5A, BP-7, BP-8, BP-70 


LABELLED 


NUMBER DESCRIPTION 


Name plate BP-5A 


S) 


Name plate BP-70 


ORDERING 
NUMBER 


8310006970 


8310012080 


= 
1 


Front case (7) A (BP-5A, BP-7, BP-8) 
Front case (9) A (BP-70) 


8010002860 
8010007030 


Charge jack (A) HECO779-01-030 


6450000240 


LED (SLB23VR5F) 


5040000390 


Sliding metal (D) 


8930007220 


PH BO 2x4 


8810000980 


Charging terminal (D) 


8930006240 


Spring (A) 


8930007220 


FFH M2x8 


8810004660 


2) 
® 
® 
©) 
© 
@ 
® 


Rubber cap (for jack A) 


8930001740 


Rear case (7) B (BP-5A, BP-7, BP-8) 
Rear case (9) B (BP-70) 


8010002870 
8010007040 


FFH M2~x4 Ni 


8810004671 


Charging selector plate (C) (BP-70) 


Charging selector plate (B) (BP-5A, BP-7, BP-8) 


8930002150 
8930012830 


Plate spring 


8930004670 


Charger jack (B) HEC1737-01-020 


6450000230 


PH BO 2x4 


8810000980 


Charging metal 


8010001920 


Rubber cap (for jack B) 


8930001750 


Q\O|O|@|@/S| @ |®| © 


PH BO 2x15 ZK 


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SECTION 6 MAINTENANCE AND ADJUSTMENT 


6-1 PLL ADJUSTMENT 


TEST INSTRUMENTS REQUIRED MEASUREMENT CONNECTION LOCATION 


(1) FREQUENCY COUNTER 


® Frequency range : 100~500 MHz 

© Sensitivity : 100 mV or better Eg 
(2) DC VOLTMETER 

e Input impedance : 50 kQ/DC or better 


to [DC IN 13.8 V] jack 
FREQUENCY AC POWER 
(3) RF POWER METER (or 50 Q dummy load) COUNTER SUPPLY 
© Minimum power rating: 10 W 


e Frequency minimum : 450 MHz 
® Impedance -50Q Loose couple to antenna. 


© SWR : Less than 1.2: 1 


(4) AC POWER SUPPLY 
e Output voltage Saeed WHI DIC. 
e Current capacity 76-4 IC-32A/AT/E 
to R292, R303 DC 
VOLTMETER 


MEASUREMENT | eee 
ADJUSTMENT ADJUSTMENT CONDITIONS VALUE 


UNIT LOCATION UNIT | ADJUST 
RF 


LOCK 1 | ¢ Frequency display: Connect the DC THOS, U-VCO C510 
VOLTAGE 430.00 MHz (except U.S.A.) voltmeter to R292. 
440.00 MHz (U.S.A.) 
e Receiving 
2 | © Frequency display: Connect the DC sy W/ V-VCO L554 
144.00 MHz voltmeter to R303. 
® Receiving 
REFERENCE e Frequency display: Loose couple the Same as the displayed RF C288 
FREQUENCY 440.00 MHz (except U.S.A.) frequency counter frequency. 
450.00 MHz (U.S.A.) to the antenna 
e Transmitting connector. 


RF UNIT 


L554 Lock Voltage adj. 
(Peeloff silver tape 
when adjusting.) 


C510 Lock Voltage adj. 
(Peeloff silver tape 
when adjusting.) 


R303 Lock Voltage 
measurement location 


R292 Lock Voltage 
measurement location 


C288 Reference Frequency adj. 


6-2 RECEIVER ADJUSTMENT 


TEST INSTRUMENTS REQUIRED MEASUREMENT CONNECTION LOCATION 


(1) STANDARD SIGNAL GENERATOR 
e Frequency range : 100~500 MHz 
© Output level SEO 17/ Clelnn. 6 


ee STANDARD F 
(0.1 uVvV~32 mV) SIGNAL [DC IN 13.8 V] jack AC POWER 


GENERATOR SUPPLY 
(2) DC VOLTMETER 


e Input impedance : 50 kQ/V DC or better 
(3) AC POWER SUPPLY 

© Output voltage 7 sue NEIDXE 

e Current capacity > 5A 


IC-32A/AT/E 


to J206 DC 
VOLTMETER 


MEASUREMENT Ae OC 
| ADJUSTMENT ADJUSTMENT CONDITIONS VALUE 
| UNIT LOCATION UNIT | ADJUST 
i 


UHF e Frequency display: Connect the DC Maximum 

432.00 MHz (except U.S.A.) voltmeter to J206 sequence 
442.00 MHz (U.S.A.) pin 10. L211 

© Receiving L210 

e Apply an RF signal to the antenna L208 

connector. L201 

Level: —87 dBm (10.0 pV) 
Dev. : +3.5 kHz 
Mod. : 1 kHz 

© [SQL] control: Max. CCW* 


SENSITIVITY 


S-METER 


VHF 1 | e Frequency display: Connect the DC Maximum Adjust in 
SENSITIVITY 146.00 MHz (except Europe) voltmeter to J206 sequence 
145.00 MHz (Europe) pin 10. L205 
e Apply an RF signal to the antenna - L204 
connector. L203 
Level: —81 dBm (20.0 pV) L202 
Dev. : 3.5 kHz 
Mod. : 1 kHz 


e Frequency display: FUNCTION | S/RF INDICATOR 2 dots MAIN 
435.00 MHz (except U.S.A.) DISPLAY 
445.00 MHz (U.S.A.) 

e Apply an RF signal to the antenna 

connector. 
Level: —107 dBm (1.0 pV) 
Dev. : +3.5 kHz 
Mod. : 1 kHz 

e Frequency display: 

146.00 MHz (except Europe) 
145.00 MHz (Europe) 

¢ Apply an RF signal to the antenna 

connector. 
Level: —101 dBm (2.0 pV) 
Dev. : +3.5 kHz 
Mod. : 1 kHz 


* CCW: Counterclockwise 


RF UNIT 


UHF Sensitivity 


VHF Sensitivity adj. adj. 


J206 (Pin 10) 
UHF/VHF Sensitivity 


L201 UHF Sensitivity adj. measurement location 


MAIN UNIT 


R739 
— —snerer adj. 
R738 


6-3 TRANSMITTER ADJUSTMENT 


TEST INSTRUMENTS REQUIRED MEASUREMENT CONNECTION LOCATION 


(1) RF POWER METER 
e Terminated type 


e Measuring range : 0.1~10 W FM to [MIC] jack Te 
e Frequency range : 100~500 MHz DEVIATION 

ENERATOR 
e Impedance 502 METER GEN 


e SWR : Less than 1.2: 1 


ATTENUATOR: 
more than 40 dB 


RF POWER 
METER 


(2) FM DEVIATION METER 
® Frequency range : 100~500 MHz 
e Measuring range 7 OSE 10%KHZ 


to 
[DC IN 13.8 V] jack 


AC POWER 
SUPPLY 


(3) AUDIO GENERATOR 
e Frequency range : 200~2000 Hz 
e Output range >: 2~200 mV 


(4) ATTENUATOR 
e Attenuation ratio : 40 or 50 dB 
e Input power rating : At least 10 W 


(5) AC POWER SUPPLY 
e Output voltage whee NOLS: 
e Current capacity 25 A 


MEASUREMENT CIEE 
ADJUSTMENT ADJUSTMENT CONDITIONS VALUE 
UNIT LOCATION UNIT | ADJUST 


OUTPUT 1 | ¢© Frequency display: Connect the RF 5.0 R314 
POWER 435.00 MHz (except U.S.A.) power meter to the 
445.00 MHz (U.S.A.) antenna connector. 
e [H/L] switch: High 
® Transmitting 
2 | e Frequency display: R320 
146.00 MHz (except Europe) 
145.00 MHz (Europe) 


DEVIATION 1 | e Frequency display: Connect the +4.8 kHz MAIN R779 
435.00 MHz (except U.S.A.) deviation meter to 
445.00 MHz (U.S.A.) the antenna 
e Apply an AF signal to the [MIC] connector via the 
jack. attenuator. 
50 mV/1 kHz (except U.S.A.) 
110 mV/1 kHz (U.S.A.) 
© Set the deviation meter. 
HEE eoOurlZ 
LPF : 20 kHz 
De-emphasis: OFF 
Detector : (P-P)/2 
2 | © Frequency display: +4.8 kHz R781 
146.00 MHz (except Europe) 
145.00 MHz (Europe) 
a 


e Frequency display: Connect the 


TONE 445.00 MHz (U.S.A.) deviation meter to 
DEVIATION 435.00 MHz (Asia) the antenna 
(IC-32AT only) e Apply no AF signal to the [MIC] connector via the 


jack. 

e Set the deviation meter. 
HPF HORE 
EBE : 20 kHz 
De-emphasis: OFF 
Detector : (P-P)/2 

e Set the tone frequency to 88.5 Hz. 


attenuator. 


TRANSMITTER ADJUSTMENT (CONTINUED) 


ADJUSTMENT 
MEASUREMENT POINT 
VALUE 
UNIT LOCATION UNIT | ADJUST 


Connect the +3.5 kHz MAIN R751 
deviation meter to 

the antenna 

connector via the 

attenuator. 


3.5. KHz MAIN R748 


ADJUSTMENT CONDITIONS 


ADJUSTMENT 


DTMF TONE 
DEVIATION 
(IC-32AT only) 


e Frequency display: 

445.00 MHz (U.S.A.) 

435.00 MHz (Asia) 
e Push and hold the [D] key while 
transmitting. 


TONE CALL 
DEVIATION 
(IC-32E only) 


Connect the 
deviation meter to 
the antenna 
connector via the 
attenuator. 


e Frequency display: 

435.00 MHz 
e Push and hold the [T. CALL] 
switch. 


RF UNIT 
R314 Output 
Power adj. 
R320 Output Power adj. 
| 
| 
1. 
E 
MAIN UNIT 
R779 
Deviation adj. 
R751 DTMF Tone ————————"yxerees R781 


Deviation adj. 


R748 Tone Call 
Deviation adj. 
(IC-32E only) 


R601 Subaudible Tone Deviation adj. 


The above pictures show the IC-32AT. 


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SECTION BOARD LAYOUTS 


7-1 EF UNIT 


to MAIN UNIT J708 


SQUELCH PWR/ VOL MAIN DIAL 


FOIL SIDE 
COMPONENT SIDE 


7-2 LOGIC UNIT 


LR40872 (IC-32AT) |C901 uPD75308GF-100-3B9 1C902 
(DTMF ENCODER) (CPU) 


SINGLE 
TONE TONE wes By A ae SOY wet es 
NC OUT INHIBIT 


fe] fer] Pe] fe] fe] fe] el [Ge] 


P71/KR5S 


[8 ] P72/KR6 


$12 P7O/KR4 

$13 P63/KR3 

S14 P62/KR2 

$15 P61/KRI 

'S: S16 P60/KRO 
Siiv x2 
S18 x1 
MOB ERBENG CAYCE CO wre 
V+ XMRT COL COL COL V- osc OSC S21 xT! 
SWITCH | 2 3 IN OUT $22 Voo 
$23 P33 


$24/BPO P32 
$25/BP1 P31/SYNC 


S-8054ALB-LM IC903 $26/BP2 P30/LCDCL 
(RESET) 529 /8P4 pee/Pct 


$29/BP5 | P21 


S30/BP6 P20/PTOO 

$31 /BP7 P13/T10 
COMO Pi2/ INT2 
COM) PII/ INT) 
cOM2 PIO/INTO 
COM3 PO3/S1/SB1 


OUT Vop Vss 


PO1/SCK 


Vice 
P40 
P41 
P42 
P43 
Vss 
P50 
PSt 
P52 
P53 
~ PO02/SO/SBO 


BIAS 
Vico 
Vici 


POO /INT4 


LA6393M IC904 TC4S71F |IC905, IC906 
(DUAL COMPARATOR) (OR GATE) 


INPUT2 INPUT2 
Vee OUTPUT2 (-) (+) 


oe 


OUTPUT! INPUT! INPUT] VEE 
(=) (+) 


2SA1362 GR 2SB798 DK 2SC4081 S RN1404 
Q908 Q906 Q905, Q907, Q909 
Q910 
BASE BASE BASE 
COLLECTOR COLLECTOR COLLECTOR 2SC4081 ) COLLECTOR 
EMITTER EMITTER (IC-32AT) EMITTER 
Q901, Q902, 
Symbol: AEG Symbol: DK Q903, Q904 Symbol: XD 
BASE 
COLLECTOR 
EMITTER 
Symbol: BS 


COMPONENT SIDE 


E 


aio 4 
=| -=|c 
EEE 
a] PEF 


x) 4 Tle) i 
zl 2} HO} z1°] 2) 2 


wo 
El + 
ole 


Ele 
Ele 
aja 


FOIL SIDE 


Zz 
fe) 
oo. 
= 
‘e) 
1) 


7-2 LOGIC UNIT 


LR40872 (IC-32AT) |C901 
(DTMF ENCODER) 


SINGLE 
TONE TONE ROW ay a ais wets ox 
OUT ta. 1 


re] [7] [ie 


Woecs Ga ena (al 


O 
HAS AEE Eee 


V+ V+ XMRT COL COL COL V- OSC OSC 
SWITCH | 2 3 IN OUT 


S-8054ALB-LM |C903 
(RESET) 


OUT Vopd 


LA6393M |C904 
(DUAL COMPARATOR) 


INPUT2 Ne 
Vee OUTPUT2 (-) (+ 


INPUT! INPUT] VEE 
= (+) 


OUTPUT} 


2SA1362 GR 2SB798 DK 2SC4081 S 
Q908 Q906 Q905, Q907, 
Q910 
BASE BASE 
COLLECTOR COLLECTOR COLLECTOR 2SC4081 Ss 
EMITTER EMITTER (IC-32AT) 
Q901, Q902, 
Symbol: AEG Symbol: DK Q903, Q904 
BASE 
COLLECTOR 
EMITTER 
Symbol: BS 


LPD75308GF-100-3B9 IC902 
(CPU) 


$i2 
$13 
$14 
$15: 
S16 
Sle 
$18 
S19 
$20 
S2\ 
S22 
$23 
$24/BPO 
$25/8P 1 
S26/BP2 
S$27/BP3 
$28/BP4 
$29/BP5 
S30/BP6 
$31 /BP7 
COMO 
COM! 
comM2 
CcOM3 


TC4S71F 1C905, IC906 
(OR GATE) 


P73/KR7 


POO/INT4 


PO1/SCK 
~ PO2/SO0/SBO 


P72/KR6 


P71/KR5 


P70/KR4 
P63/KR3 
P62/KR2 
P61/KRI 
P60/KRO 
x2 

xt 

NC 

xT2 

xT1 

Voo 

P33 

P32 
P31/SYNC 
P30/LCDCL 
P23/BUS 
P22/PCL 
P2t 
P20/PTOO 
P13/T10 
Pi2/ INT2 
Pit1/ INT1 
PIO/INTO 
PO3/S1/SB! 


RN1404 
Q909 


BASE 
COLLECTOR 


EMITTER 


Symbol: XD 


COMPONENT SIDE 


eecee= 


AUS 


_saa*esee Se 


ded 
ea oe te 
* on 


a 


— > 
= 


_ 
-= 
—— 


Ss = 
Ge eee te 
Ea ah 


. 
~_ 


hea 
45 
Ven 


wwe 
we 


ee, 
ra 


oe ee 2 
1] 


60 aE, haan ae 


Pe De bereh On i it 2 Pee 


1 Won aaatn le 
ciated * 


Fy A: iis =~ a i A 
1 ml et A Rl: Ng Mg 


es 


WH FOIL SIDE 


yy COMPONENT SIDE 


FOIL SIDE 


1SS184 
D915 (IC-32E: Italy) 
D916 (IC-32E) 


Ly 


Symbol: B3 


1S$S193 

D905 

D909 (IC-32A/AT: U.S.A., Asia) etl SItUyy i. 

D910 (IC-32A/AT: U.S.A.) on 3 Stee = ey Aiwa 

D915 (IC-32E : Europe) f We 4 “ Ade 1 8 x803 
Pen ae he Fite od lid tll 


IY 


Symbol: F3 


1SS196 

D915 (IC-32A: Australia), 
D916 (IC-32A/AT), 

D918 


L 


Symbol: G3 


DAP202U 
D906 


by 


Symbol: P 


DWA010 
D901 (IC-32AT) 
D902 (IC-32AT) 
D903, D904 


UT 


Symbol: BM 


FOIL SIDE 
_ COMPONENT SIDE 


7—3 


7-3 MAIN UNIT 


BA526 !C702 
(AUDIO POWER AMP) 


uPD4094BG C701 
(8-STAGE SHIFT AND STORE BUS REGISTER) 


OUTPUT 
Vopp ENABLE Q5 Q6 Q7 


fel’ tel Iw] (ol: (et seed 


IN RIPPLE 
FILTER 


—»——" Vcc OUT GND FILTER NFB 


PHASE 


UPD4096UBG 1IC703 
(HEX INVERTER) 


TC5082P-G (IC-32E) I|C704 
(OSCILLATOR AND 12 STAGE DIVIDER) 


LUT [2] ey sy eT Ts 


XTour XT XT Qi2 Vpop Qi Qio Q@9 GND 


M5218FP |C706 
(LOW NOISE DUAL OPERATIONAL AMPLIFIER) 


$81250HG |C705 
(3-TERMINAL 5 V REGULATOR) 


TK10420M 1C707 
(FM IF IC) 


SQUE- 
RF AUDIO SCAN -LCH FILTER FILTER DETCTOR 
LN GND NC MUTECONTROL IN OUT NC IN OUT 

20 13 


fs] fie] fer] fe] fel fel fis) ie] fn] 


@ 


LIEI EG ete Ie ey Tey” 


LOCAL CRYSTAL NC MIXER Vcc LIMITER DE NC LIMITER QUAD 
IN Osc OUT IN COUPLING OUT IN 


1SS187 DAN202U DAP202U HSM88AS MA862 
D704 D701, D702, D713 (IC-32AT) D703, D705 D706, D708 
D707, D709, 
D710, D711, 
D712 (IC-32E), 
D714, D716 


Symbol: D3 Symbol: P Symbol: C1 Symbol: M11 


Symbol: N 


¢ MAIN UNIT 


J7il 


from RF UNIT P204 


J703 


fromRF UNIT P203 ( J207 ) 


J705 


from SPE 
MICROP! 


Fiwr [one [oun frst fs fpara] ox [lost] os res 


FUNCTION 


2SB909M R 
Q701, Q712, 
Q714 


B 


BASE 
COLLECTOR 
EMITTER 


2SJ106 GR 
Q703, Q722, 
Q723 


SOURCE 


GATE 


ORAIN 


Symbol: VG 


FOIL SIDE 
COMPONENT SIDE 


2S8C2712 BL 
Q708, 
Q719 (IC-32AT) 


BASE 
COLLECTOR 


EMITTER 


Symbol: LL 


DTA144EU 
Q718 (IC-32E) 


BASE 


COLLECTOR 


EMITTER 


Symbol: 16 


7-3 MAIN UNIT 


BA526 |C702 
(AUDIO POWER AMP) 


uPD4094BG 1C701 
(8-STAGE SHIFT AND STORE BUS REGISTER) 


OUTPUT 
ENABLE Q5 Qs 


©] fel fel fal [al [ol 


Vop 


M—— Vee OUT GND FILTERNFB IN RIPPLE 
PHASE FILTER 


uPD4096UBG 1C703 
(HEX INVERTER) 


TC5082P-G (IC-32E) 1C704 
(OSCILLATOR AND 12 STAGE DIVIDER) 


M5218FP |C706 
(LOW NOISE DUAL OPERATIONAL AMPLIFIER) 


$81250HG C705 
(3-TERMINAL 5 V REGULATOR) 


TK10420M C707 
(FM IF IC) 


SQUE- 
RF AUDIO SCAN -LCH FILTER FILTER DETCTOR 
IN| GND NC MUTECONTROL IN OUT NC IN OUT 


18 17 15 14 


e) 


RgCESESCS SESE COREARCIBES 


LOCAL CRYSTAL NC MIXER Vcc LIMITER DE NC LIMITER QUAD 
IN OSC OUT IN COUPLING OUT IN 


1SS187 DAN202U DAP202U HSM88AS MA862 
D704 D701, D702, D713 (IC-32AT) D703, D705 D706, D708 
D707, D709, , 
D710, D711, 
D712 (IC-32E), 
D714, D716 


Symbol: D3 Symbol: P Symbol: C1 Symbol: M11 


Symbol: N 


¢ MAIN UNIT 


J7i1 


from RF UNIT P204 


J703 


to LOGIC UNIT 


fromRF UNIT P203 ( J207 ) 


J705 


mic = [mic |sP-+ | sP— | 


SPEAKER AND 
MICROPHONE P90! 


from 


Fint [one [uum Pst frsuparal ox [lost] 08 Ress 


J702 


J7Ol- 


PI5I (JI52) 


from RF UNIT P202 ( J206) 


from PTT BOARD 
P 704 (J7I0) 


4704[LamP|Mon! |runc | pr [¢no | 


from EF UN 
PI5I (JIS! 


[s-aF[r +8 [eno [vmoo] eno [umoo|vcoe]+ss | eno [vee | 


[ves [eno [urs] [se+|srax] mic [+5 [rico fext | 


EP) FOIL SIDE 
> COMPONE 


from RF UNIT P2O0I ( J205 ) 


NT SIDE 


e PTT BOARD 


[a 


FUNCTION 


MONITOR 


2SA1162 GR 
Q716, Q724 


BASE 


COLLECTOR 


EMITTER 


Symbol: SG 


28C3770 3 
Q710, Q711 


BASE 
COLLECTOR 


EMITTER 


Symbol: JY3 


DTC144EU 
Q725 


BASE 


COLLECTOR 


EMITTER 


Symbol: 26 


Laer roa | 


to MAIN UNIT ( J 704 ) 


2SA1576 S 
Q720 


BASE 


COLLECTOR 


EMITTER 


Symbol: FS 


2SC4081 S 
Q702, Q705, 
Q706, Q709, 
Q713, Q715, 
Q717 


BASE 
COLLECTOR 


EMITTER 


Symbol: BS 


BASE 1 COLLECTOR 1 


EMITTER 


BASE 2 COLLECTOR 2 


Symbol: W1 


FOIL SIDE 


ee 


2SB909M R 
Q701, Q712, 
Q714 


B 
BASE 
COLLECTOR 


EMITTER c 


2SJ106 GR 
Q703, Q722, 
Q723 


SOURCE 


GATE 


ORAIN 


Symbol: VG 


- COMPONENT SIDE 


28C2712 BL 
Q708, 
Q719 (IC-32AT) 


DTA144EU 
Q718 (IC-32E) 


BASE 
COLLECTOR 


EMITTER 


Symbol: 16 


7-4 RF UNIT (1) 


uPD4094BG 1C202 


(8-STAGE SHIFT AND STORE BUS REGISTER) 


OUTPUT 
Vop ENABLE 


fe] fs] fv] 


Borin wc 


O 


Gee eee 


STROBE SERIAL CLOCK QI Q2 Q3 Vss 


SC-1080 1C207 
(POWER MODULE) 


2SA1362 GR 2SB798 DK 2SC3770 3 2SC3772 3 2SC4081 S 
Q207, Q208 Q226 Q201 Q203, Q209, Q227 
Q210, Q211, 
BASE BASE BASE Q221 : Q222. BASE 
COLLECTOR COLLECTOR COLLECTOR COLLECTOR Q223, Q229 COLLECTOR 
EMITTER EMITTER EMITTER EMITTER 
BASE : 
Symbol: AEG Symbol: DK Symbol: JY3 Seer Symbol: BS 
EMITTER 
Symbol: LY3 
2SJ106 GR 2SK209 BL 2SK209 Y 2SK302 Y 2SK536 
Q225 Q204 Q218 Q202 Q215, Q216, 
Q230, Q236 
SOURCE SOURCE SOURCE DRAIN GATE 
GATE GATE GATE SOURCE SOURCE 
DRAIN DRAIN DRAIN GATE DRAIN 
Symbol: VG Symbol: XL Symbol: XY Symbol: TY Symbol: CP 
DTA144EU DTA144TU DTC124EU DTC144EU DTC144TU 
Q244, Q250 Q245 Q247 Q243, Q251, Q233, Q242 
Q252 
BASE BASE BASE BASE BASE 
COLLECTOR COLLECTOR COLLECTOR COLLECTOR COLLECTOR 
EMITTER EMITTER EMITTER EMITTER EMITTER 
Symbol: 16 Symbol: 96 Symbol: 25 Symbol: 26 Symbol: 06 
FMA3 FM4 FMS1 
Q231 Q232 Q228 
BASE 1 COLLECTOR 1 BASE 1 COLLECTOR 1 BASE1 COLLECTOR 1 
EMITTER EMITTER EMITTER 
BASE 2 COLLECTOR 2 BASE 2 COLLECTOR 2 BASE2 COLLECTOR2 
Symbol: A3 Symbol: A4 Symbol: SI 


COMPONENT SIDE 


1SS153 
D219, D223 


it, 


Symbol: AQ 


Symbol: BA 


Symbol: BE 


DA204U » 
D224 


Symbol: K 


DAN202U 
D222, D225 


Symbol: N 


MA334 B 
D202, D203, 
D204 


se 


Symbol: 6D82 


MA862 

D201, D205, 
D212, D2t5, 
D216, D218 


Symbol: M11 


7-4 RF UNIT (1) 


uPD4094BG 1C202 
(8-STAGE SHIFT AND STORE BUS REGISTER) 


SC-1080 1C207 
(POWER MODULE) 


OUTPUT 
Vop ENABLE Q5 a6 Qs as’ 
10 


fe] fel fo 


[ie] fel fe] id 


O 
Cee Gy Sees 


ts 
STROBE SERIAL CLOCK QI Q2 Q3 Q4 Vss 
IN 


2SA1362 GR 2SB798 DK 2SC3770 3 2SC3772 3 2SC4081 S 
Q207, Q208 Q226 Q201 Q203, Q209, Q227 
Q210, Q211, 
BASE BASE BASE Q221 : Q222, BASE 
COLLECTOR COLLECTOR COLLECTOR COLLECTOR Q223, Q229 COLLECTOR 
EMITTER EMITTER EMITTER EMITTER 
BASE . 
COLLECTOR 
Symbol: AEG Symbol: DK Symbol: JY3 Symbol: BS 
EMITTER 
Symbol: LY3 
2SJ106 GR 2SK209 BL 2SK209 Y 2SK302 Y 2SK536 
Q225 Q204 Q218 Q202 Q215, Q216, 
Q230, Q236 
SOURCE SOURCE SOURCE DRAIN GATE 
GATE GATE GATE SOURCE SOURCE 
DRAIN DRAIN DRAIN GATE DRAIN 
Symbol: VG Symbol: XL Symbol: XY Symbol: TY Symbol: CP 
DTA144EU DTA144TU DTC124EU DTC144EU DTC144TU 
Q244, Q250 Q245 Q247 Q243, Q251, Q233, Q242 
Q252 
BASE BASE BASE BASE BASE 
COLLECTOR COLLECTOR COLLECTOR COLLECTOR COLLECTOR 
EMITTER EMITTER EMITTER EMITTER EMITTER 
Symbol: 16 Symbol: 96 Symbol: 25 Symbol: 26 Symbol: 06 
FMA3 FM4 FMS1 
Q231 Q232 Q228 
BASE 1 COLLECTOR 1 BASE 1 COLLECTOR 1 BASE1 COLLECTOR 1 
EMITTER EMITTER EMITTER 
BASE 2 COLLECTOR 2 BASE 2 COLLECTOR 2 BASE2 COLLECTOR2 
Symbol: A3 Symbol: A4 Symbol: SI 


COMPONENT SIDE 


ANT 


‘7 FOIL SIDE 


COMPONENT SIDE 


FOIL SIDE 


FOIL SIDE 
COMPONENT SIDE 


‘—T7 


1SS153 
D219, D223 


IY 


Symbol: AQ 


1SS154 
D217 


| 


Symbol: BA 


DAN202U 
D222, D225 


i} 


Symbol: N 


MA334 B 
D202, D203, 
D204 


He 


qi} 


Symbol: 6D82 


MA862 

D201, D205, 
D212, D215, 
D216, D218 


La 


Symbol: M11 


7-5 RF UNIT (2) 


TC9181F 1C203 


MB504LPF-G-BND 10204 
(PLL SYNTHESIZER) 


(SWALLOW COUNTER) 


Voo Doi Doz H NC NC NC LD G_ ST DATA 


‘pal bl fal fe] el fel fel fir fe) [i] fe) [3 


PLL2001S 1C205 


SC-1081 1C206 
(PLL SYNTHESIZER) 


(POWER MODULE) 


GND OUTPUT 


2SA1298 Y 


2SA1576 S 28C2712 BL 2SC3772 3 2SC4081 S 
Q248 Q220 Q212 Q224 Q213, Q217, 
Q219 
BASE BASE BASE BASE BASE 
COLLECTOR COLLECTOR COLLECTOR COLLECTOR COLLECTOR 
EMITTER EMITTER EMITTER EMITTER EMITTER 
Symbol: lY Symbol: FS Symbol: LL Symbol: LY3 Symbol: BS 
RN1402 RN1403 RN1404 UN511E UN521E 
Q249 Q246 Q241 Q237, Q238 Q239 
BASE BASE BASE BASE BASE 
COLLECTOR COLLECTOR COLLECTOR COLLECTOR COLLECTOR 
EMITTER EMITTER EMITTER EMITTER EMITTER 
Symbol: XB Symbol: XC Symbol: XD Symbol: 6N Symbol: 8N 
DAN202U DWA010 
D221 O2is 
Symbol: N Symbol: BM 


PLL BOARD 


COMPONENT SIDE 


FOIL SIDE 
) > COMPONENT SIDE 


DATA GND CK +5 SSF VLV VSS VIN 


FOIL SIDE 


FOIL SIDE 
COMPONENT SIDE 


(GND) (X)(+5S) (UIN) (ULV) (PLSL) 


(ULIN) (PLSH) 


MODULE BOARD 


COMPONENT SIDE 


7-6 U-VCO UNIT 


UOUT GND 
| 
(GND) 


2SC3356 R25 
Q502 


BASE 
COLLECTOR 


EMITTER 


Symbol: R25 


MA334 B 
D501 


— 


] i 


Symbol: 6D82 


U+5S GND 


(ULV) (S-MD) (GND) 


28C3772 3 
Q501, Q503 


BASE 
COLLECTOR 


EMITTER 


Symbol: LY3 


MA862 
D502 


Symbol: M1] 


7—10 


UOUT GND 


a 
(GND) 


FOIL SIDE 
COMPONENT SIDE 


RN1403 
Q504 


BASE 
COLLECTOR 


EMITTER 


Symbol: XC 


7-7 V-VCO UNIT 


COIL BOARD 


V OUT2 GND VLV V+5S VOUT1 GND 
( GND ) (MOD) (VR+5)(VT+5) (GND ) 


FOIL SIDE 
COMPONENT SIDE 


2SC3772 3 2SK302 Y 
Q551,,0553 Q552 
BASE DRAIN 
COLLECTOR SOURCE 
EMITTER GATE 
Symbol: LY3 Symbol: TY 
1$S154 MA333 MA334 B MA862 
D555 D553 D552, D554 D551 
—1kt— = ie 
Symbol: BA Symbol: 6C83 Symbol: 6D82 Symbol: M11 


74 


7-8 TONE UNIT (IC-32AT) 


$7116A |C601 uPD4094BG |C602 
(PROGRAMMABLE TONE GENERATOR) (8-STAGE SHIFT AND STORE BUS REGISTER) 


OUTPUT 
Voo ENABLE Q5 Qs Qs 


STROBE SERIAL CLOCK QI 2 
IN 


from 
MAIN UNIT 


P704 (J706) P704 (J707) 


9) COMPONENT SIDE 


7—12 


SECTION 8 


PARTS LIST 


[EF UNIT] 
DESCRIPTION PART NO. 
Diode 1$S133 
Zener RD20E B2 


Variable Resistor 1OKQ A RKO97111101NA 


Variable Resistor 10kQ B RKO971110051A 
(IC-32A/AT) 
Variable Resistor 10kQ B RK0971114003A 


(IC-32E) 


Ceramic 47 pF 50 V 
Ceramic 47 pF 50 V 
Ceramic 47 pF 50 V 


Relay OUC-SH-114D 


TZB-PO5H-A1 
TZB-PO5H-A1 


Connector 
Connector 


Connector PI28A10F 


SRBM1L040A 


Encoder 


P.C. Board 


B-1617B 


[LOGIC UNIT] 


DESCRIPTION PART NO. 


IC LR40872 (IC-32AT) 

IC uPD75308GF-100-3B9 
IC S-8054ALB-LM 

IC LA6393M 

IC TC4S71F 


TC4S71F 


Transistor 2SC4081 S (IC-32AT) 
Transistor 2SC4081 S (IC-32AT) 
Transistor 2SC4081 S (IC-32AT) 
Transistor 2SC4081 S (IC-32AT) 
Transistor 2SC4081 S 
Transistor 2SB798 DK 
Transistor 2SC4081 S 
Transistor 2SA1362 GR 
Transistor RN1404 


Transistor 2SC4081 S 


DWA010 (IC-32AT) 


Diode DWA010 (IC-32AT) 
Diode DWA010 

Diode DWA010 

Diode 1SS193 

Diode DAP202U 

Diode 1$S254 


(IC-32A/E: Australia, Europe) 


[LOGIC UNIT] 


DESCRIPTION PART NO. 


Diode 1SS193 (IC-32A/AT: U.S.A., Asia) 
Diode 1$S193 (IC-32A/AT: U.S.A.) 
Diode 1SS254 

Diode 1$S254 

Diode 1SS193 (IC-32E: Europe) 

Diode 1SS184 (IC-32E: Italy) 

Diode 1$S196 (IC-32A: Australia) 
Diode 1SS$184 (IC-32E) 

Diode 1SS196 (IC-32A/AT) 

Diode 188196 


Ceramic Resonator CSAC3.58MGC300CD (IC-32AT) 
Crystal CR227 (4.1125 MHz) 


Resistor 82 kQO MCR10 
Resistor 82 kQ MCR10 
Resistor 82 kQ MCR10 
Resistor 82 kQ MCR10 
Resistor 10 kQ MCR10 
Resistor 47 kQ MCR10 
Resistor 47 kQ MCR10 
Resistor 47 kQ MCR10 
Resistor 1 MQ MCR10 
Resistor 47 kQ MCR10 (IC-32AT) 
Resistor 82 kQ MCR10 (IC-32AT) 
Resistor 82 kQ MCR10 (IC-32AT) 
Resistor 82 kQ MCR10 (IC-32AT) 
Resistor 82 kQO MCR10 (IC-32AT) 
Resistor 1 MQ MCR10 (IC-32AT) 
Resistor 1 MQ MCR10 (IC-32AT) 
Resistor 1 MQ MCR10 (IC-32AT) 
Resistor 1 MQ MCR10 (IC-32AT) 
Resistor 150 kQ MCR10 
Resistor 150 kQ MCR10 
Resistor 150 kQ MCR10 
Resistor 150 kQ MCR10 
Resistor 1 MQ MCR10 
Resistor 1 MQ MCR10 
Resistor 330 kQ MCR10 
Resistor 390 kQ MCR10 
Resistor 100 kQ MCR10 
Resistor 100 kQ MCR10 
Resistor 2.2 kQ MCR10 
Resistor 1.5 kQO MCR10 
Resistor 220 Q MCR10 
Resistor 1.2 MQ MCR10 
Resistor 100 kQ MCR10 
Resistor 100 kQ MCR10 
Resistor 47 kQ MCR10 
Resistor 1.2 MQ MCR10 
Resistor 1 MQ MCR10 


Ceramic 0.001 uF GRM4O0 (IC-32AT) 

Ceramic 0.1 UF GRM40 F (IC-32AT) 

Ceramic 30 pF GRM40 SL 50PT 
(IC-32AT) 

Ceramic 30 pF GRM40 SL 50PT 
(IC-32AT) 

Ceramic 0.001 pF GRM40 

Ceramic 15 pF GRM40 

Ceramic 15 pF GRM40 

Ceramic 330 pF GRM40 CH 

Ceramic 0.001 uF GRM40 

Ceramic 47 pF GRM40 

Ceramic 0.001 uF GRM40 

Ceramic 0.1 pF GRM40 F 


Ceramic 470 pF 50 V 


[LOGIC UNIT] 


| REF. NO. | DESCRIPTION PART NO. 


C914 Ceramic 0.01 pF GRM40 F 
Ceramic 0.001 nF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF ~ GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 


Connector PI28A04F 


SLN-210VC 
HRS-3060A-G40 
HRS-3060A-G40 
LD-BU9246J 


Lamp 
Lamp 


Microphone KUC2023-01-006 


Speaker Si36D04 


P.C. Board B-1712D 
F.P.C Board B-1622B 
LCD Contact Strip SRCN-575 


[MAIN UNIT] 


| REF. No. | DESCRIPTION PART NO. 


IC UPD4094BG 

IC BA526 

IC uPD4069UBG 

IC TC5082P-G (IC-32E) 
IC $81250HG 

IC M5218FP 


TK10420M 


Transistor 2SB909M R 
Transistor 2S8C4081 S 
FET 2SJ106 GR 
Transistor 2SC4081 S 
Transistor 2S8C4081 S 
Transistor 28C2712 BL 
Transistor 2SC4081 S 
Transistor 2S8C3770 3 
Transistor 2SC3770 3 
Transistor 2SB909M R 


Transistor 2SC4081 S 


[MAIN UNIT] 


| REF.NO. | DESCRIPTION PART NO. 


Q714 Transistor 2SB909M R 
Transistor 2SC4081 S 
Transistor 2SA1162 GR 
Transistor 2804081 S 
Transistor DTA144EU (IC-32E) 
Transistor 28C2712 BL (IC-32AT) 
Transistor 2SA1576 S 
Transistor FMW1 
FET 2SJ106 GR 
melp 2SJ106 GR 
Transistor 2SA1162 GR 


Transistor DTC144EU 


DAN202U 


Diode DAN202U 

Diode HSM88AS 

Diode 1SS187 

Diode HSM88AS 

Diode MA862 

Diode DAN202U 

Diode MA862 

Diode DAN202U 

Diode DAN202U 

Diode DAN202U 

Diode DAN202U (IC-32E) 
Diode DAP202U (IC-32AT) 
Diode DAN202U 


DAN202U 


Ceramic CFUM455E 


CR214 (30.42 MHz) 
CDB455C7A 
CR251 (7.168 MHz) (IC-32E) 


Crystal 
Discriminator 
Crystal 


820 Q 


Resistor MCR10 
Resistor 680 Q MCR10 
Resistor 4.7 kQ MCR10 
Resistor 1MQ MCR10 
Resistor 100 kQ MCR10 
Resistor 1kQ MCR10 
Resistor 4.7 kQ MCR10 
Resistor 39 kQ MCR10 
Resistor 39 kQ MCR10 
Resistor 4.7 kQ MCR10 
Resistor 150 kQ MCR10 
Resistor 2.2 k<Q MCR10 
Resistor 15 kQ MCR10 
Resistor 27 kQ MCR10 
Resistor 330 kQ MCR10 
Resistor 47 kQ MCR10 
Resistor 560 Q MCR10 
Resistor 3.3 kN MCR10 
Resistor 680 Q MCR10 
Resistor 1MQ MCR10 
Resistor 100 kQ MCR10 
Resistor 22 kQ MCR10 
Resistor 6.8 kQ MCR10 
Resistor 2.2 kQ MCR10 
Resistor 470Q MCR10 
Resistor 330 kQ MCR10 
Resistor 100 kQ MCR10 
Resistor 5.6 kQ MCR10 
Resistor 1.5kQ MCR10 
Resistor 47 kQ MCR10 
Resistor 1.5 kQ MCR10 
Resistor 680 kQ MCR10 
Resistor 10 kQ MCR10 
Resistor 100 kQ MCR10 
Resistor 47 kQ MCR10 


Trimmer 22kQ B  RHO4A3AJ4J01A 


[MAIN UNIT] 


} REF. NO. | DESCRIPTION PART NO. 


. Trimmer 22kQ B  RHO4A3AJ4J01A 

Resistor 560 kQ MCR10 

Resistor 1.5 kQ MCR10 

Resistor 4.7 kQ MCR10 

Resistor 1.5 kO MCR10 

Resistor 4.7 kQ MCR10 

Resistor 10 kQ MCR10 

Resistor 5.6 kQ MCR10 

Resistor 22 kQ MCR10 

Trimmer 10kQ B  RHO4A3A14J02A 
(IC-32E) 

Resistor 47 kQ MCR10 (IC-32E) 

Resistor 150 kQ MCR10 (IC-32AT) 

Trimmer 10kQ B  RHO4A3A14J02A 
(IC-32AT) 

Resistor 33 kQ MCR10 (IC-32AT) 

Resistor 22 kQ MCR10 (IC-32AT) 

Resistor 100 kQ MCR10 (IC-32AT) 

Resistor 4.7 kQ MCR10 

Resistor 4.7 kQ MCR10 

Resistor 68 kQ MCR10 

Resistor 2.2 MQ MCR10 

Resistor 100 kQ MCR10 

Resistor 100 kQ MCR10 

Resistor 2.2 MQ MCR10 

Resistor 68 kQ MCR10 

Resistor 220 kQ MCR10 

Resistor 82 kQ MCR10 

Resistor 82 kQ MCR10 

Resistor 270 kQ MCR10 

Resistor 220 kQ MCR10 

Resistor 120Q MCR10 
(IC-32A/AT/E: except U.S.A.) 

Resistor 2709 MCR10 
(IC-32A/AT: U.S.A.) 

Resistor 240 kQ MCR10 

Resistor 180 kQ MCR10 

Resistor 47 kQ MCR10 

Resistor 1kQ MCR10 

Resistor 180 kQ MCR10 

Resistor 10 kQ MCR10 

Resistor 4709 MCR10 

Trimmer 47kQ B  RHO0421CS4J08A 

Trimmer 47kQ B  RHO0421CS4J08A 

Resistor 33 kQO MCR10 

Resistor 220 kQ MCR10 

Resistor 2.2 kO MCR10 

Resistor 22 kQ MCR10 


Resistor 8.2 kQ MCR10 


Ceramic 470 pF GRM40 


Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 0.1 YF GRM40 F 
Ceramic 0.01 pF GRM40 B 25PT 
Electrolytic 100 pF 6.3 V RC2 D=5.0 
Ceramic 470 pF GRM40 
Electrolytic 2.2F 35 V MS5 D=3.0 
Ceramic 0.001 uF GRM40 
Electrolytic fils 50V MS5 
Electrolytic 47 UF 16 V RC2 D=5.0 
Ceramic 0.1 UF GRM40 F 
Ceramic 47 pF GRM40 

Ceramic 0.001 uF GRM40 
Electrolytic 47 uF 16 V RC2 D=5.0 
Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 0.001 uF GRM40 

Ceramic 0.1 pF GRM40 F 
Ceramic 0.1 YF GRM40 F 
Ceramic 0.001 nF GRM40 

Ceramic 0.0022 uF GRM40 


[MAIN UNIT] 


DESCRIPTION PART NO. 


Ceramic 0.01 YF GRM40 B 25PT 
Ceramic 0.01 YF GRM40 B 25PT 
Ceramic 0.1 UF GRM40 F 
Ceramic 0.001 uF GRM40 

Ceramic 0.01 pF GRM40 B 25PT 
Tantalum 0.047 uF 863385 V OSV 
Ceramic 33 pF GRM40 

Ceramic 0.001 uF GRM40 

Ceramic 470 pF GRM40 
Electrolytic 0.22 UF 50 V MS5 
Ceramic 0.001 uF GRM40 

Ceramic 0.001 uF GRM40 

Ceramic 82 pF GRM40 

Ceramic 0.1 YF GRM40 F 
Ceramic 0.1 UF GRM40 F 
Ceramic 0.001 uF GRM40 

Ceramic 18 pF GRM40 

Ceramic 56 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 0.001 uF GRM40 

Tantalum 2.2 UF 16V ODN 
Ceramic 0.1 WF GRM40 F 
Ceramic 100 pF GRM40 

Ceramic 0.1 UF GRM40 F 
Ceramic 470 pF GRM40 

Ceramic 100 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 0.1 pF GRM40 F 
Ceramic 0.1 WF GRM40 F 
Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 0.1 LF GRM40 F . 
Electrolytic 2.2 UF 35 V MS5 D=3.0 
Ceramic 0.1 UF GRM40 F 
Electrolytic 4.7 UF 16V  MS5 
Ceramic 0.1 pF GRM40 F 
Ceramic 47 pF GRM40 (IC-32E) 
Ceramic 10 pF GRM40 (IC-32E) 
Ceramic 10 pF GRM40 (IC-32E) 
Ceramic 0.001 uF GRM40 (IC-32E) 
Electrolytic 0.1 UF 50 V_ MS5 (IC-32E) 
Electrolytic 4.7 UF 16 V MSS5 (IC-32AT) 
Ceramic 0.1 UF GRM40 F (IC-32AT) 
Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 

Ceramic 0.001 uF GRM40 
Electrolytic 47 uF 6.3 V RC2 D=4.0 
Ceramic 0.001 uF GRM40 
Electrolytic 47 uF 6.3 V RC2 D=4.0 
Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 
Electrolytic 47 uF 6.3 V RC2 D=4.0 
Ceramic 0.001 pF GRM40 
Electrolytic 47 uF 6.3 V RC2 D=4.0 
Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 
Electrolytic 22 UF 16 V RC2 D=4.0 
Ceramic 0.001 uF GRM40 
Electrolytic 47 uF 16 V RC2 D=5.0 
Ceramic 100 pF GRM40 
Electrolytic 0.47 UF 50V  MS5 
Electrolytic 0.47 UF 50V MS5 
Tantalum 1 UF 16V SV 
Ceramic 0.001 uF GRM40 SL 5SOPT 
Ceramic 0.0022 uF GRM42-6 SL 50PT 
Electrolytic 4.7 UF 16V  MS5 
Ceramic 120 pF GRM40 

Ceramic 0.1 UF GRM40 F 
Tantalum 0.22 UF TESVA1V224K1-8L 


(IC-32A/AT/E: except U.S.A.) 


[MAIN UNIT] 


| REF.NO. | DESCRIPTION PART NO. 


Tantalum 0.1 UF TESVA1V104K1-8L 
(IC-32/AT: U.S.A.) 

Ceramic 470 pF GRM40 

Ceramic 470 pF GRM40 

Electrolytic 10 uF 10 V MS5 D=3.0 

Ceramic 0.0047 uF GRM40 

Ceramic 0.001 uF GRM40 B 25PT 

Ceramic 0.001 uF GRM40 

Electrolytic 10 pF 10 V MS5 D=3.0 

Ceramic 0.1 WF GRM40 F 

Electrolytic 2:2 BF 35 V MS5 D=3.0 

Ceramic 47 pF GRM40 

Ceramic 0.001 nF GRM40 


Connector PI28A10M 


Connector PI28A10M 
Connector PI28A10M 
Connector PI28A05M 
Connector PI28A04M 
Connector TZB-PO7H-A1 
Connector TZB-PO3H-A1 
Connector PI28A10M 
Connector CFP4128-0121 
Connector TZB-PO5H-A1 


Connector PI28A03M 


PI28A10F 
PI28A05F 


Connector 
Connector 


Switch 
Switch 
Switch 


SKHMPDO04A 
SKHMPDO04A 
SKHMPDO04A 


Lithium Battery BR2325-1HC 


MCR10-JPW 
MCR10-JPW 


Jumper 
Jumper 


P.C. Board 
P.C. Board 
Ferrite Bead 


B-1614D (MAIN) 
B-1618B (PTT) 
DL2-OP2.6-3-1.2H 


[RF UNIT] 


| REF.NO. | DESCRIPTION PART NO. 


HPD4094BG 
TC9181F 
MB504LPF-G-BND 
PLL2001S 
SC-1081 

SC-1080 


2S8C3770 3 


Transistor 
FET 2SK302 Y 


Transistor 2SC3772 3 
FET 2SK209 BL 
Transistor 2SA1362 GR 
Transistor 2SA1362 GR 
Transistor 2SC3772 3 
Transistor 2SC3772 3 


[RF UNIT] 


| REF.NO. | DESCRIPTION PART NO. 


Transistor 28C3772 3 
Transistor 2802712 BL 
Transistor 28C4081 S 
FET 2SK536 
Beil 2SK536 
Transistor 2SC4081 S 
FET 2SK209 Y 
Transistor 2SC4081 S 
Transistor 2SA1576 S 
Transistor 2SC3772 3 
Transistor 2S8C3772 3 
Transistor 2SC3772 3 
Transistor 2SC3772 3 
FEh 2SJ106 GR 
Transistor 2SB798 DK 
Transistor 2SC4081 S 
Transistor FMS1 
Transistor 2SC3772 3 
FET 2SK536 
Transistor FMA3 
Transistor FMA4 
Transistor DTC144TU 
ET 2SK536 
Transistor UN511E 
Transistor UN511E 
Transistor UN521E 
Transistor RN1404 
Transistor DTC144TU 
Transistor DTC144EU © 
Transistor DTA144EU 
Transistor DTA144TU 
Transistor RN1403 
Transistor DTC124EU 
Transistor 2SA1298 Y 
Transistor RN1402 
Transistor DTA144EU 
Transistor DTC144EU 


Transistor DTC144EU 


Diode MA862 


Varicap MA334 B 
Varicap MA334 B 
Varicap MA334 B 
Diode MA862 
Diode MA862 
Diode DWAO10 
Zener RD6.8E B2 
Diode MA862 
Diode MA862 
Diode 188154 
Diode MA862 
Diode 1SS153 
Diode 18V172 
Diode DAN202U 
Diode DAN202U 
Diode 188153 
Diode DA204U 


Diode DAN202U 


Monolithic 30M15B 


CR247 (10.0 MHz) 


Crystal 


Coil LS-320 
Coil LS-319 


Coil LS-321 
Coil LS-321 
Coil LS-321 
Coil LA-228 
Coil LA-227 


Coil LS-319 


[RF UNIT] 


Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 
Coil 


Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 
Resistor 


DESCRIPTION PART NO. 


LS-338 
LS-337 
LA-224 
LA-223 
LA-223 
LA-224 
LA-247 
LQN2A R15K 
LA-224 
LA-224 
LA-225 
LA-223 
LA-232 
LA-236 
LQH3N 1R5M 
LA-226 
LA-225 
LA-227 
LALO2TA 100K 
LALO2TA 100K 
LALO2TA 1R5M 
LQN2A 56NM 


1.5 kQ MCR10 


1kO MCR10 
39 kQ MCR10 
10 kQ MCRtO 
22 kQ MCR10 
10 kQ MCR10 
4709 MCR10 
4.7 kQ MCR10 
56 Q MCR10 


2.2-kQ MCR10 
100 kQ MCR10 
100 kQ MCR10 


ZG) MCR10 
330 QO MCR10 
15 kQ MCR10 


5.6 kQ MCR10 
100 kQ MCR10 


33 O MCR10 
100 Q R20 
47 kQ MCR10 


6.8 kQ R20 
6.8 kQ MCR10 


10 kQ MCR10 
1 kQ MCR10 
150 kQ MCR10 
68 kQ MCR10 
222 MGR10 
22 0 MCR10 
4700 MCR10 
39 kQ MCR10 
479 MCR10 
22 0 MCR10 
39 kQ MCR10 
47 kQ MCR10 
15 kQ MCR10 
15 kQ MCR10 


100 kQ MCR10 
100 kQ MCR10 


1 kQ MCR10 
2.2 kQ MCR10 
10 kQ MCR10 


330 kQ MCR10 
680 kQ MCR10 
680 kQ MCR10 
330 kQ MCR10 
100 kQ MCR10 
1 kQ MCR10 
2.2 kQ MCR10 
1.2 MQ MCR10 
1 kQ MCR10 
1.5 kQ MCR10 


[RF UNIT] 


DESCRIPTION PART NO. 


Resistor 100 Q MCR10 
Resistor 47 kQ MCR10 
Resistor 10 kQ MCR10 
Resistor 47 kQ MCR10 
Resistor 4.7 kQ MCR10 
Resistor 1.8 kQ ELR20 
Resistor 100 kQ MCR10 
Resistor 47 kQ MCR10 
Resistor 10 kQ MCR10 
Resistor 220 MCR10 
Resistor 22 kQ MCR10 
Resistor 5.6 kQ MCR10 
Resistor 150 kQ MCR10 
Resistor 8.2 kQ R20 
Resistor 470Q MCR10 
Resistor 15 kQO MCR10 
Resistor 47 kQ MCR10 
Resistor 100 kQ MCR10 
Resistor 47 kQ MCR10 
Resistor 47 kQ MCR10 
Resistor 100 kQ MCR10 
Resistor 100 2 MCR10 
Resistor 22 kQ MCR10 
Resistor 5.6 kO MCR10 
Resistor 8.2 kQ R20 
Resistor 10 kQ MCR10 
Resistor 56 O MCR10 
Resistor 18 kQ MCR10 
Resistor 6.8 kQ MCR10 
Resistor 330 MCR10 
Resistor 220 MCR10 
Resistor 100 QO MCR10 
Resistor 1 MQ MCR10 
Resistor 4.7 kQ MCR10 
Trimmer 100 kQ B EVM-LGG AOO B15 
Resistor 5.6 kQ MCR10 
Resistor 560 kQ MCR10 
Resistor 220 kQ MCR10 
Resistor 22 kQ MCR10 
Resistor 82 kQ MCR10 
Trimmer 30 kQ B EVM-LGG AOO B34 
Resistor 33 kQ MCR10 
Trimmer 5 kQ B EVM-LGG AOO B53 
Resistor 1.8 kQ MCR10 
Resistor 22 kQ MCR10 
Resistor 10 kQ MCR10 
Resistor 4.7 kQ MCR10 
Resistor 18 kO MCR10 
Resistor 6.8 kQO MCR10 
Resistor 10Q MCR10 
Resistor 220 Q MCR10 
Resistor 150 QO MCR10 
Resistor 100 Q MCR10 
Resistor 1.2 MQ MCR10 
Resistor 47 kQ MCR10 


Resistor 330 Q MCR10 
Resistor 220 Q MCR10 
Resistor 1 MQ R20 

Resistor 1.8 kO MCR10 
Resistor 10 kQ MCR10 
Resistor 100 kQ MCR10 
Resistor 100 kQ MCR10 
Resistor 47 kQ MCR10 


Thermistor ERT-D2FHL503S 


Ceramic 0.001 uF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.1 HF GRM40 F 
Ceramic 0.01 WF GRM40 F 
Ceramic 47 pF GRM40 
Ceramic 12 pF GRM40 
Ceramic 0.001 pF GRM40 
Ceramic 10 pF GRM40 
Ceramic 22 pF GRM40 


[RF UNIT] 


| REF. NO. | DESCRIPTION PART NO. 


Ceramic 0.001 uF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.01 UF GRM40 F 
Ceramic 47 pF GRM40 
Ceramic 56 pF GRM40 
Ceramic 1 pF GRM40 
Ceramic 7 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 56 pF GRM40 
Ceramic 0.001 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 22 pF GRM40 
Ceramic 12 pF GRM40 
Ceramic 33 pF GRM40 
Ceramic 18 pF GRM40 
Ceramic 22 pF GRM40 
Ceramic 27 pF GRM40 
Ceramic 22 pF GRM40 
Ceramic 47 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 10 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 22 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 0.5 pF GRM40 
Ceramic 470 pF =. GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 10 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 5 pF GRM40 
Ceramic 5 pF GRM40 
Ceramic 7 pF GRM40 
Ceramic 22 pF GRM40 
Ceramic 8 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.001 uF GRM40 
Trimmer 15 pF ECR-GA015E30 
Ceramic 18 pF GRM40 CH 
Ceramic 56 pF GRM40 CH 
Ceramic 120 pF GRM40 CH 
Ceramic 0.001 uF GRM40 
Ceramic 470 pF GRM40 
Ceramic 0.1 UF GRM40 F 
Ceramic 0.1 UF GRM40 F 
Ceramic 0.001 uF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.1 UF GRM40 F 
Ceramic 470 pF GRM40 
Ceramic 47 pF GRM40 
Ceramic 47 pF GRM40 
Ceramic 47 pF GRM40 
Tantalum 6.8 UF 6.3V SV 
Ceramic 0.001 uF GRM40 
Ceramic 47 pF GRM40 
Ceramic 0.001 nF GRM40 
Tantalum 0.1 UF 35V DN 
Tantalum Sot 16V DN 
Ceramic 470 pF GRM40 
Ceramic 0.001 uF GRM40 
Tantalum 3.3 UF 6.3V SV 
Tantalum 303 IF 16V DN 


[RF UNIT] 


| REF. No. | DESCRIPTION PART NO. 


Ceramic 470 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 47 pF GRM40 
Ceramic 47 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 


Electrolytic 0.22 UF 50V MS5 
Ceramic 0.001 pF GRM40 
Ceramic 33 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Tantalum 0.1 UF 35V DN 
Ceramic 0.001 uF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 4 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 4 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Electrolytic 10 uF 10 V MS5 D=3.0 
Electrolytic 22 UF  16V RC2 D=4.0 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 5 pF GRM40 
Ceramic 56 pF GRM40 
Ceramic 4 pF GRM40 
Ceramic 22 pF GRM40 
Ceramic 5 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 1 pF GRM40 
Ceramic 5 pF GRM40 
Ceramic 5 pF GRM40 
Ceramic 2 pF GRM40 
Ceramic 10 pF GRM40 
Ceramic 0.75 pF GRM40 SL 50PT 
Ceramic 7 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Electrolytic 10 pF 10 V MS5 D=3.0 
Ceramic 10 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 15 pF GRM40 
Ceramic 0.001 uF GRM40 
Electrolytic 10 UF 10 V MS5 D=3.0 
Ceramic 0.001 uF GRM40 
Ceramic 470 pF GRM40 
Ceramic 8 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 6 pF GRM40 
Ceramic 15 pF GRM40 
Ceramic 15 pF GRM40 
Ceramic 0.1 UF GRM40 F 
Ceramic 47 pF GRM40 
Ceramic 7 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 470 pF GRM40 
Ceramic 0.001 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Tantalum 10 uF 16V DN 


[RF UNIT] 


| REF. NO. | DESCRIPTION 


Ceramic 
Ceramic 
Ceramic 
Ceramic 
Ceramic 
Ceramic 
Ceramic 


PART NO. 


GRM40 
GRM40 
GRM40 
GRM40 
GRM40 
GRM40 
GRM40 


470 pF 
470 pF 
470 pF 
470 pF 
100 pF 
0.001 uF 
470 pF 


HEC0779-01-030 
HSJ0836-01-010 
HSJ1102-01-540 
TZB-P10H-A1 
TZB-P10H-A1 
TZB-P10H-A1 
PI28A03M 
TZB-PO2H-A1 
BNC-R111-E 


Connector 
Connector 
Connector 
Connector 
Connector 
Connector 
Connector 
Connector 
Connector 


PI28A10F 
PI28A10F 
PI28A10F 
PI28A03F 
PI28A03F 


Connector 
Connector 
Connector 
“Connector 
Connector 


Switch SPPJ62 


MCR10-JPW 
MGR10-JPW 
MCR10-JPW 
JPW-02A 
JPW-02A 


Jumper 
Jumper 
Jumper 
Jumper 
Jumper 


P.C. Board 
P.C. Board 
P.C. Board 
P.C. Board 
Ferrite Bead 
Ferrite Bead 
Ferrite Bead 
Ferrite Bead 


B-1615E (RF) 

B-1619B (PLL) 

B-1668B (MODULE) 

B-1714 (BATTERY TERMINAL) 
DL2-OP2.6-3-1.2H 
DL2-OP2.6-3-1.2H 
DL2-OP2.6-3-1.2H 
DL2-OP2.6-3-1.2H 


[U-VCO UNIT] 


| REF.NO. | DESCRIPTION PART NO. 


Transistor 2SC3772 3 
Transistor 2SC3356 R25 
Transistor 2963772 3 


Transistor RN1403 


MA334 B 
MA862 


Varicap 
Varicap 


Coil LQN2A 47NM 
Coil LQH3N R39M 
Coil LA-225 


(IC-32A/AT/E: except U.S.A.) 
Coil LA-224 (IC-32/AT: U.S.A.) 
Coil LQN2A 47NM 


[U-VCO UNIT] 


| REF.NO. | DESCRIPTION PART NO. 


Resistor 330 QO MCR10 
Resistor 33 kQ MCR10 
Resistor 220 MCR10 
Resistor 47Q MCR10 
Resistor 4.7kQ MCR10 
Resistor 6.8 kQ MCR10 
Resistor 47 kQ MCR10 
Resistor 330 MCR10 
Resistor 33 kQ MCR10 
Resistor 4.7 kQ MCR10 
Resistor 4.7 kQ MCR10 
Resistor 100 Q MCR10 


Resistor 


Ceramic 470 pF GRM40 
Ceramic 0.5 pF GRM40 
Ceramic 6 pF GRM40 CH 
Ceramic 6 pF GRM40 CH 
Ceramic 470 pF GRM40 
Tantalum 1 uF 16V SV 
Ceramic 0.1 UF GRM40 F 
Ceramic 12 pF GRM40 
Trimmer 10 pF ECR-LBO10A12 
Ceramic 12 pF GRM40 
Ceramic 0.3 pF GRM40 SL 50PT 
Ceramic 8 pF GRM40 
Ceramic 6 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 470 pF GRM40 
Ceramic 4 pF GRM40 
Ceramic 4 pF GRM40 
Ceramic 0.5 pF GRM40 
Tantalum 1 UF 16V SV 
Ceramic 10 pF GRM40 
Ceramic 10 pF GRM40 


B-1718A 


P.C. Board 


[V-VvCO UNIT] 


DESCRIPTION PART NO. 


Transistor 2SC3772 3 
FET 2SK302 Y 
Transistor 2SC3772 3 


Diode MA862 


Varicap MA334 B 
Varicap MA333 
Varicap MA334 B 


Diode 18S154 


LQN2A R15K 


Coil LQH3N 1R5M 
Coil LB-230 
Coil LQN2A R15K 


LQH3N 1R5M 


Resistor 


Resistor 39 kQ MCR10 
Resistor 100 kQ MCR10 
Resistor 10 kQ MCR10 


Resistor 


[V-VCO UNIT] 


| REF.NO. | DESCRIPTION PART NO. 


Resistor 100 kQ MCR10 
Resistor 39 kQ MCR10 
Resistor 4.7 kQ MCR10 
Resistor 1kQ MCR10 


Resistor MCR10 


Ceramic 0.001 uF GRM40 
Ceramic 0.001 hF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.5 pF GRM40 
Ceramic 15e0F GRM40 
Ceramic Sipe GRM40 
Ceramic 100 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 0.75 pF GRM40 SL 50PT 
Ceramic 0.001 uF GRM40 
Ceramic 7 pF GRM40 
Ceramic 7 pF GRM40 
Ceramic 0.001 uF GRM40 
Ceramic 470 pF GRM40 


P.C. Board B-1623C (V-VCO) 
P.C. Board B-1604 (COIL) 


[TONE UNIT] (1c-3247T) 


| REF. NO. DESCRIPTION PART NO. 


IC S7116A 
uPD4094BG 


Crystal RF4A3 FAA (3.578 MHz) 


47 kQ 
47 kQ 


RHO4A3AS4J01A 
MCR10 


Trimmer 
Resistor 


Tantalum 0.47 UF 25°VE"SV 


Ceramic 470 pF GRM40 
Ceramic 47 pF GRM40 
Ceramic 39 pF GRM40 


Connector PI28A10M 


B-1566B 


OPTIONAL UNITS 


SECTION 9 


9-1 UT-40 TONE SQUELCH UNIT CIRCUIT DESCRIPTION 


9-1-1 GENERAL DESCRIPTION 


IC1 is a tone encoder/decoder IC chip that outputs 
and detects 37 different kinds of tones. A tone is set 
by serial data from IC902 on the LOGIC UNIT in the 
IC-32A/AT/E. 


OUTPUT 
FREQUENCY 
[Hz] 


OUTPUT 
FREQUENCY 


IC1 INPUT PIN NUMBER 


9-1-2 ENCODER CIRCUIT 


Pin 26 in IC1 outputs a programmed tone frequency when 
pin 12 in IC1 becomes “LOW.” 


Q4 functions as a buffer amplifier. The collector of Q4 
outputs the tone signal and the signal is applied to the 
VCO circuit to be modulated. 


Tone deviation can be adjusted by R10. 


9-1-3 DECODER CIRCUIT 


Detected signals from pin 11 in IC707 on the MAIN UNIT 
of the IC-32A/AT/E are applied to pin 29 in IC1 on the 
UT-40 through the DETO line. When the signals have a 
tone modulated and the tone is matched with the pro- 
grammed tone frequency by IC2, pin 23 in IC1 changes 
from ‘“‘LOW” to “HIGH.” 


6-bit parallel data to IC1. 


IC2 functions as a serial/parallel converter, applying 
The following table shows the 
relation between frequency and input data in IC1. 


OUTPUT 
FREQUENCY 


e When the tone squelch function is turned OFF: 
Both pins 11 and 12 in IC2 are “HIGH” and +5 V are 
not applied to IC1. Q2 and Q3 turn OFF and the TSQL 
line is “HIGH.” 


e When the tone squelch function is turned ON: 


Pin 11 of IC2 is “HIGH” and pin 12 of IC2 is “LOW.” 
Both Q2 and Q3 turn ON. 


When the received tone frequency is not matched with 
the programmed tone frequency, pin 23 of IC1 is “LOW” 
and the TSQL line is “LOW.” 


When the received tone frequency is matched with the 
programmed tone, pin 23 becomes “HIGH” and the 
TSQL line becomes “HIGH.” 


9-2 UT-40 VOLTAGE/CIRCUIT DIAGRAM 


COMMON: 2.4V 


| 
MN 6520 


O.22ysec 


GND 
CK 
CTC 
DATA 
OPT 


TSQL 

ett) eee : 

he 2 

Rae eeECS Sab TONE 
DTA IGG EU 


fpr sonests code dias 
DTC144 
> > a 


EU 
ire RX:OV (WITH DIFFERENT TONE) 
RX:4.8V (WITH SAME TONE) TC4S8IF 
x TX:OV 


Q2 
DTA144EU 


R7 100k 


R9 22k 


st 
st 
~ 
& 


D] 
[> -1DA204U 


L—~-1R77 100k 2. IRKI0OV 


04 TX:2.5V 
G7. R12 2SC 4087 RX:OV (WITH DIFFERENT TONE) 
0.1 100k eres (WITH SAME TONE) 


RIO 22k 


9-3 


UT-40 BOARD LAYOUTS 


COMPONENT SIDE 


FOIL SIDE 


COMPONENT SIDE 


9-4 UT-40 BLOCK DIAGRAM 


MUTE 
SWITCH > TSQL 
1C4 

TC4S81 


[>\DETECTOR 


IC1 
MN6520 


CR245 


CONTROL 
IC2 
uPD4094 


<}#——__ RECEIVE MODE 
<q TRANSMIT MODE 
<+—_ COMMON _ MODE 


9-5 UT-40 PARTS LIST 
[T. SQL UNIT] 


Resistor 22 kQ MCRO3 EZH J 
Trimmer > 22kQ RHO4A3AJ4J 

Resistor 100 kQ MCRO3 EZH J 
Resistor 100 kQ MCRO3 EZH J 
Resistor 1 MQ MCRO3 EZH J 
Resistor 4.7kQ MCRO3 EZH J 
Resistor 2.2 MQ MCRO3 EZH J 


MN6520 
uPD4094BG 
TC4S81F 
TC4S81F 


Transistor DTA144EU 
Transistor DTA144EU 
Transistor DTC144EU 
Transistor 2SC4081 R Ceramic 0.1 pF GRM40 F 

Ceramic 0.1 WF GRM40 F 

Ceramic 50 pF GRM39 SL 180J 
DA204U 
1SS193 


Ceramic 50 uF GRM39 SL 180J 
Tantalum 33 UF TESVC0G336M12L 
Ceramic 50 UF GRM39 B 471K 
Ceramic Os RF GRM40 F 
Ceramic 0.1 UF GRM40 F 
Ceramic 0.1 YF GRM40 F 


Crystal 


Resistor MCRO3 
Resistor MCRO3 
Resistor MCRO3 
Resistor d MCRO3 
Resistor MCRO3 
Resistor MCRO3 
Resistor MCRO3 
Resistor MCRO3 


Connector PI28A10M 


P.C. Board B-1577C 


Cs i en gu eee ea 


SECTION 


LOGIC AND M 


INITIAL f 


ee | 
| IC-32 

| 

| 

| 

| 

a 
w S 
| © + 
| 2 8 
= Ni S 
18 & 

ee 

So 

I3] 


RF UNIT 


eat 
R752 33K 


C774 0.1 


ig 
R751 10KB 


es 
! 
| 
| 


(JAN), 1C-32E/ET, IC-32 A/AT 
facariu.s.A) 


TX:5.1V 
RX:5.2V 


35 = R776 R777 
tK 10K 470 


ay 


778 470P 
+—I 


Q724 
2SA1162 


C747 470P 


CHG 


BATTERY PACK INT 


To upgrade quality, some components may 


10. 
: be subject to change without notice. 


9-4 UT-40 BLOCK DIAGRAM 


MUTE 
SWITCH > TSQAL 
1C4 

TC4S81 


[>\DETECTOR 


TONE 


IC1 
MN6520 


TX/RX 
CONTROL 


CR245 


CONTROL 
IC2 
uPD4094 


<}———__ RECEIVE MODE 
<$—\__ TRANSMIT MODE 
<}+ COMMON MODE 


9-5 UT-40 PARTS LIST 


[T. SQL UNIT] 


Resistor MCRO3 EZH J 
Trimmer RHO4A3AJ4J 

Resistor MCRO3 EZH J 
Resistor MCRO3 EZH J 
Resistor MCRO3 EZH J 
Resistor = MCRO3 EZH J 
Resistor i MCRO3 EZH J 


MN6520 
uPD4094BG 
TC4S81F 
TC4S81F 


Transistor DTA144EU 
Transistor DTA144EU 
Transistor DTC144EU 
Transistor 2SC4081 R Ceramic 0.1 pF GRM40 F 

Ceramic 0.1 YF GRM40 F 

Ceramic 50 UF GRM39 SL 180J 
DA204U 


188193 


Ceramic 50 UF GRM39 SL 180J 
Tantalum 33 UF TESVC0G336M12L 
Ceramic 50 uF GRM39 B 471K 
Ceramic 0.1 UF GRM40 F 
Ceramic 0.1 UF GRM40 F 
Ceramic 0.1 UF GRM40 F 


Crystal CR245 


Resistor 10 kQ MCRO3 
Resistor 15 kQ MCRO3 
Resistor 150 kQ MCRO3 
Resistor 2.2 kQ MCRO3 
Resistor 10 kQ MCRO3 
Resistor 10 kQ MCRO3 
Resistor 100 kQ MCRO3 
Resistor 47 kQ MCRO3 


Connector PI28A10M 


P.C. Board B-1577C 


Ce C1 eS Ce ee ee 


SECTION 10 


VOLTAGE DIAGRAMS 


LOGIC AND MAIN UNITS 


JAPAN (IC-23) a JPEN SQL CLOSE 
U.S.A (1C-32a7aT) BP AsrAticeseanTy TEE SVRKAQV TKAKOV 
LOGIC UNIT MAIN UNIT = = as 
Fd | 22K 470P 470 
0 T WA—ir 
0708 wde SecA OV +4 2 
passed! STOR ase sOey ascari2 & sav cLose te O 
P704 y704 a) TX,RK:0.6V 
&) 
ote e 1p Le ; a 
C704 470P ; i a ry re 3 2 i — 
1k : Orel e el ais O 
T 702 470P. TX:0V DAN202U TXOV,AX4.5V o ot aaa 
INITIAL MATRIX & Rea Sear RXi4.5V SOL CLOSE ENG th eens | 2 Rl aaresioor ) 
INITIAL MATRIX ee aver fora | p oe = ee 2 Fe c re) 
q =? 2 Txov = a 7 
g Laure 5 | Raa x:7,207 ® x x o[saiz! PO SV Sbeaey fee O 
Fr AxioV = 5 = oS eee 3 are os cs 38 
I 703 ee PY STOS eae Ld fs Ren ey 3 Sie Le ait & 
So Sop yy 25C4081/Ax:2.6V 2 2 s A Ee} be {| re) 
i 470P 6 crI0 = E —_—_++ re) 
s s Fy Fy C707 100 0,001] CTI3 0.1, ae C726 corer nres 5 
S338 = 0.01 0.01 HEP 
2) 3) 8 3 ov, 1¢701 Li é Rory C707 Reavy if A 
KEYER OFF:TX 48V,RK ov = uP04094 8G aa + :] o § 528 TKI0420M 2 
KEYER ON “TX 2.8V,RX OV al ey RX12.8V ss 7K:0V CI s Slo oT 
R908 R907 R906 R905 s Ki 5 z 
47K 47K 47K 10K et eroe ov. neh ae 9 no? Sm 
2SB909M/ 2SC4081 yy-oy A. e723 0.1 : ee | 
22 Ops 18 }17 6 jis 8 6 = - 
= () 3 : : tee 
13 eae x 5 = I 
isl 2 Rro1 820 | crie 470P rae R708 100K 8 = R732 15K \cpomasse : g 
3 e = 
1 - es ps904 cD are ° x 3 aaa 
\3 : 77] ol 5 3 = ot OSV 
3 <= BS LD-Bu9246u a oT 
\ . ll 8 yet x 
ES 8 
1c902 ze mov, * = C751 10° | Rr4s 4. 
PD75308GF - 100-389 [7s] | i 
O76 Bs 
es jessy) sina 
1} 
| [70] 
1 3.5V 
= 3 
: are ole 
i x z e=5 
Q90!1~ 904 ° a VHF, UHF Tt i 
| S) 9907 KY 2° TX 112,3V, RX:12.6V Pa 
25c408! (y a th 
8 2scaoa! 5 
1 2 s 0712\2s8909M 3) 0714 2s8909m 
1 5 + 
Ron 0.24usec J 
I —— P| = s 0713 RF UNIT 
1c903 5 2sc4oa) >°Y 
Row? e2K r 3Vp-p = 
| S-8054AL8-LM f3 4 S\ 2-12 
R919 150K | 2 & <q a]a 
1 R913 82K a ad, \ procccc crc ccc 55-5 ----- yo --- rc -- 5 ele 
+>3 
! oy C7030 = cit — | : | 
! 1 J jpoanzozy |S Tx,Axi4.av © RX SOV 7] 1¢-32AT, 1C-32ET Only a ot Sms 
! = + UHF Ni ™ 1 
R921 150K | 2] 3 3 TX,RK:4.5V = J £ ! 
ext 8 S « 1 = i 
AMP OFF 
En oe IC-32E/ET Only pert : - ' ets 
RX12.6V RX :12.5V ° ! Te 
1 | 719 1 Sys 
e910 a 2sceri2 : th 
25408! TX. ROC1LOV Q905 | 
1c¢904a\ 25¢408! Sythe? TC5082P-G ; ei 
£ 
aa 
e s 
§ I IE is DTAIS4EU : = 
ry a 
s cee O° ! " 
7 mcgo! ' 
Fs tT kuc2z023-01 of TT ! 1 
= S cezg ap ie ee. lr 4 
: 2 e 9720 Spee eS fe 
s : 6 
2 = a3 2 c930 52V panier’ Pras 47K I mi 
s S g a SP90} 7 1 [o22 | re-23/ an), 1C-32E/ET, 1C-S2A/AT 
3 2 ° s s136004 %  qxa2av al. \ 00? Ton | 1e-sbaraTus.al 
co 4 7 cR25) 3 a 
~ = 470Px4 RB PRKA2Z5V chi 3 ee ed ee = se It 
b aan z 8 
=a a eee 2 - ee gees ve a 
OP + av, caren fers lie S prro |120_| 16-231JAN), 1C-32E/ET, 16-32 A/AT + AX'S.2¥ 
3 sros Ss Le aay JE ee eee wre 8° | rer evox SSE , om / 
pETO [ro] panzozu R718 = 4.9V r7s6 5.0V S81250HG Axs13.2v '67 270) 80 22 OK 0 
O —+ 
al es sb a ara 560 Ly TX12.8V ob fs 
po} Ee SS ya| 10703 neasy 8 el Ps 
ee 1] =J21a °) 5 erga ov my aes § 
rele esa Se a nror eon | 87 os ores Ni 
Aes Sie bg! | 8 g a z sid asAlee : 
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Icom Inc. 


6-9-16, Kamihigashi, Hirano-ku, Osaka 547, Japan 
Phone: 06 793 5301 

Fax :06 793 0013 

Telex : 05277822 ICOMTR J 


Icom America Inc. Icom (Europe) GmbH 
<Corporate Headquarters > Communication Equipment 
2380 116th Avenue N.E., Bellevue, WA 98004, U.S.A. Himmelgeister Str. 100, 4000 Dusseldorf 1, W. Germany 
Phone : (206) 454-8155 Phone : 0211 346047 
Fax : (206) 454-1509 Fax :0211 333639 
Telex : 152210 ICOM AMER BVUE Telex : 8588082 ICOM D 
<Customer Service> ; 
Phone : (206) 454-7619 Icom (Australia) Pty. Ltd. 
; ; Incorporated In Victoria 
<Regional Customer Service Centers> 7 Duke Street, Windsor, Victoria, 3181, Australia 
3150 Premier Drive, Suite 126, Irving, TX 75063, U.S.A. Phone : 03 529 7582 
Phone : (214) 550-7525 Fax :03 529 8485 
Fax — : (214) 550-7423 Telex : AA 35521 ICOM AS 
1777 Phoenix Parkway, Suite 201, Atlanta, GA 30349, U.S.A. 
Phone : (404) 991-6166 Icom (UK) Ltd. 
Fax — : (404) 991-6327 Unit 9, Sea St., Herne Bay, Kent, U.K. 


Phone : 0227 363859 
Fax :0227 360155 
Telex : 965179 ICOM G 


Icom Canada 


A Division of lcom America Inc. 

3071 #5 Road, Unit 9, Richmond, B.C., V6X 274, Canada Icom France S.a 

Phone : (604) 273-7400 120 Route de Revel, BP4063, 31029 Toulouse Cedex, France 
Fax : (604) 273-1900 Phone: 61. 20. 31. 49 


Fax :61. 34.05. 91 
Telex : 521515 ICOM FRA 


Count on us! 


b vA HI 


\ 


Icom Inc. A-5012-S 


6-9-16, Kamihigashi, Hirano-ku, Osaka 547, Japan Printed in Japan 
Copyright © 1988 by Icom Inc.