Document text
SINGER
INSTRUMENTATION
MAINTENANCE MANUAL
for
OSCILLOSCOPE DEVIATION MONITOR MODULE
MODEL ODM-1
(For use with Models FM-10 or FM-10C Mainframes)
Manual No. 1-500783-299
(For Use with Serial Numbers 101 and Above)
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MAINTENANCE MANUAL
for
OSCILLOSCOPE DEVIATION MONITOR MODULE
MODEL ODM-1
(For use with Models FM-10 or FM-10C Mainframes)
Manual No. 1-500783-299
(For Use with Serial Numbers 101 and Above)
This manual refers directly to serial numbers suffixed with 04296 and above.
Appendix A, Manual Backdating Information, adapts this manual to serial numbers 101 thru
serial numbers suffixed with 04295.
For operating instructions refer to either Model FM-10 Operator's Manual No.
1-500783-286, or Model FM-10C Operator's Manual No. 1-500783-258 (Rev B) or later.
Ist Print 3/75
Reprint 2/77 Lib
SINGER
INSTRUMENTATION
The Singer Company, Los Angeles Operation + 5340 Alla Road, Los Angeles, Ca. 90066
CONTENTS (Cont.)
Section Page No
II MAINTENANCE (Cont.)
DIG Paul lsolationProcedures (SURE E NAN ы сие ОЦА 2-8
ره INO race ЛЬ У A А АС A o PN 2-9
362) Vertical Centering Defective (2419) l а аи а а ۰ ۲ УГ 2-9
2630 Horizontal Centering Defective (24 БРОЈ II IL P a t. 2-9
Ded n Bocus Detective (CAINI У лата ET 2-9
2606) Intensity Defective Ah u educ n Ha sc TEE Ае 2-9
266 Vertical Center Control Defective 2425.) 2 «cc e eroe se ee 2-9
267. "Horizontal Center Control Detective (2 8250. nur u. succ ۰ ۲ ۶ ۳ ۰۳ ۰ ۰ ۰ ۲ ۰ 2-9
2.6.8 Sweep Speed Cannot Adjust Below 50 Hz on Low Range (2 DØ) RE مر seen. 2-9
2.69 Sweep Speed Cannot Adjust Above 5000 Hz on High Range (2A SIS M eser Ж.А 2-10
2.6.10 Sweep Speed Cannot Adjust Below 500 Hz on High Range (243-090 10 2. A + 2-10
2.6.11 Sweep Speed Cannot Adjust Above 500 Hz on Low Range СОА) И ОНО ИИ JEG > 2-10
2.6612 External Vertical Input Sensitivity Not Within Specification (2:24 ОТАП sos 2-10
2.6.13 Vertical Amplifier Frequency Response Not Within Specification (2.4,5-di) sus mS es mo 2-10
2.6.14 Operate Indicator Sensitivity Not Within Specification (2.4.6«ho ee xe EE ratus vel dete s 2-10
2615 Overload Indicator Sensitivity Not Within Specification (2.4.64) .................. 2-10
2.6.16 5 kHz Range Gain Not Within Specification (2.4.7-1).................-....... 2-10
26.17. 15 kHz Range Gain Not Within Specification (2474) ле 2-10
2.6.18 Insufficient Vertical Amplitude at 15 kHz(2.4.8-d.) ........................ 2-10
2.6.19 Insufficient Vertical Amplitude at 5 kHz in External Mode (APON JE АЛ u ee 2-10
2.620 External Horizontal Sensitivity Not Within Specification (2410-0 Ja uem NS orba p ers 221
2621 Audio Output Frequency Not Within Specification (2.4.11 E A edd PL ее з DM
2622 Audio Output Level Not Within Specification 2.4.11) ...................... ЙӘШ
2623 "Audio Distortion Not Within Specification (2.4,11-g.) 25255245022... з p. Dil
11 REPLACEABLE PARTS
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IV SCHEMATIC. DIAGRAMS US n Е E P a a و 4-]
APPENDIX
Appendix Page No
A Backdating Information ..............- EUM оа а кі aT A-1
TABLES
Table Page No
2-1 Test Equipment Requirements io а JRR 2-2
3-1 Parts List for Main Assemblies and Chassis å SE SPT 3-2
3-2 Parts List for IE Assembly Ad, c, lo qose cc ERE ME, CT 3-5
33 Parts List for High Voltage Power Supply Assembly; A2 Gs 2. م e e ele en e 3-12
3-4 Parts list for Vertical Amplifier Assembly AMEN JRR SR 3-13
3-5 Parts List for Horizontal Amplitier Assembly АА ES 3-15
3-6 Code Listof Manufacturers و pre GRE о. SE ET 3-17
Figure
1-1
21
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2.3
2-4
2-5
2-6
DEN
2-8
4-1
CONTENTS (Cont.)
ILLUSTRATIONS
Page No
Detailed Block Diagram, Model ЕР е eL EE 1-3
Test Connector Schematic етти NGS ura ph m Ars 2-5
Trimmen Locations, Vertical Amplifier Assembly. АЗ, llu VONT OE LLL RM RE c LL E 2-5
Trimmer Locations, Horizontal Amplifier Assembly. AM ALIIO da Sub san РН а A allies АШ 2-6
ВМО Test Cable/ Capacitor Schematic Diagram l NNN LN MN КОР ы Donk a nd 2-6
Center ¡ErequencyAd]justinent аны ош на loj ке Desi. eb ka По asa di 2-6
Trimmer Locations, If^Amplber Assembly, “ATI = I ETO ХАК NAAMA FR E le 2-6
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Trimmer Locations, Power SiipplywAssembly HAD I en 2-9
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Section І
THEORY OF OPERATION
1.1 INTRODUCTION
This section consists of the circuit description of the Model
ODM-1 plugin module. The information is presented to
assist the user in the troubleshooting and maintenance of
the instrument. Refer to the Detailed Block Diagram,
Figure 1-1 and the Schematic Diagram, Figure 4-1.
1.2 GENERAL
The Model ODM-1 plug-in module derives its operating
power and signal input from the Mainframe via the rear
connector, P1. It contains its own power switch to permit
use of the Mainframe while the plug-in module is switched
off. High voltage power supplies for the CRT are also
developed within the module. There are four subassemblies
in the Model ODM-1: 2 MHz IF assembly, A1, high voltage
power supply assembly, A2, vertical amplifier assembly,
A3, and horizontal amplifier assembly, A4. The circuitry
contained in the Model ODM-1 may be divided into six
sections: operate and overload lamp circuitry, discriminator
output circuitry, vertical deflection circuitry, horizontal
deflection circuitry, internal modulation circuitry and
power supply circuitry.
1.3. DETAILED THEORY
1.3.1 Operate and Overload Lamp Circuitry
A 2 MHz active filter consisting of А10501, AILSOI,
A1L502, and A1L503 amplifies and filters the 2 MHz IF
signal at connector, P1-16. The amplifier output is buffered
by A1Q503 and amplified by A1Q504. Level detector,
СК502, 0505, C526, rectifies the IF signal and this output
is applied to two potentiometers, A1R527 and A1R528.
Potentiometer AI R528 is adjusted to fire the operate lamp
schmidt trigger, А10506, A1Q507, when the level of the 2
MHz at connector, P1-16 is 2.5 mV. This triggers the
operate lamp switch, A1Q508, and the OPER lamp, DS1,
lights. A1R527 is adjusted to fire the overload schmidt
trigger, A1Q509, A1Q510, with 25 mV rms (2.5 mV rms
*20 dB) at the 2 MHz IF input at connector, P1-16, which
triggers the overload lamp switch, А10511, and the OVLD
lamp, DS2, lights. Interlock diode, AICR503, prevents
both lamps from being lit simultaneously.
1.3.2 Discriminator Output Circuitry
The output of the 2 MHz active filter is also applied to the
limiter-discriminator, А10501. The demodulated output is
buffered by A1Q502 and applied to connector, P1-5. The
buffered output of A1Q502 is also amplified by the
distortion analyzer amplifier, A3Q105, for use at the DIST
ANAL output receptacle, J2.
1.3.3 Vertical Deflection Circuitry
The output of the limiter-discriminator, А10501, is also
applied to the voltage divider string, R2, R3, R4, through
DC BAL potentiometer, R32. DEV RANGE switch, S2,
selects a voltage from the voltage divider string and when
the VERT IN switch, S1, is in the INT position. The
recovered audio is amplified by the recovered audio
amplifier, A1Q512, A1Q513, A1Q514, and applied to the
Mainframe via connector, P1-14.
The signal level selected by the DEV RANGE switch, S2, is
applied to the vertical deflection amplifier, ۸30101,
A3U101, A3Q103, A3Q104, and VERT CENT control, R9,
sets the bias of ۸3۲۳101۳8. A3Q102 and ۸3۲71010 are
constant current sources for the vertical deflection
amplifier. VERT COUPLING switch, S6, enables dc or ac
coupling to be selected by inserting capacitor, C1, into the
circuit when in the AC position of the switch.
1.3.4 Horizontal Deflection Circuitry
The sweep generator contains a current source, A4Q200,
and a regenerative trigger, A4Q201, A4Q202. Sweep speed
is controlled by SWEEP RANGE switch, S3, and SWEEP
SPEED control, R11. The output level is controlled by
variable resistor, A4R204. Synchronization is provided by
the vertical signal output of A3Q104. The sweep generator
Output is applied to buffer amplifier, A4Q203, when MOD
MODE switch, S4, is in either the INT or EXT position.
The output of buffer amplifier, A4Q203, is applied to the
dc-coupled horizontal deflection amplifier, A4Q204,
A4Q205, having differential outputs which drive the
horizontal deflection plates of the CRT. HORIZ CENTER
control, R12, sets the bias of A4Q205. The horizontal
amplifier may be driven from an external source connected
to the EXT MOD/HORIZ IN receptacle, J4, when the MOD
MODE switch, S4, is in the EXT HORIZ position. The
Mainframe may be modulated from the EXT MOD/HORIZ
IN receptacle, J4, when the MOD MODE switch, S4, is in
either the EXT or INT COMB positions via the modulation
amplifier, A3U102, through connector, P1-12.
1.3.5 Internal Modulator Circuitry
The 1 kHz Wein-bridge oscillator, A1Q515, ۸10516, is
buffered by A1Q517 and automatically leveled by level
detector, AICR504, A1CR505, and ALC control, A1Q518.
The output of the oscillator is applied to the INT
MOD/AUDIO OUT control, R13. The wiper of RI3 is
connected to the audio driver amplifier, A1Q519, A1Q520.
The output of A1Q520 is applied to the AUDIO OUT
receptacle, J3. When the MOD MODE switch, S4, is in the
INT/COMB position, the output from the Wein-bridge
oscillator is amplified by the modulation amplifier,
A3U102 and applied to the Mainframe through connector,
P1-12.
1.3.6 Power Supply Circuitry
The power supply is a dc-to-dc inverter that converts 19
volts from the Mainframe when the PWR OFF switch, S1, is
closed to —1000 volts and *300 volts required by the CRT.
The inverter also supplies —15 volts required by the vertical
and horizontal deflection amplifiers and 2 MHz IF
assembly. The 6.3 V rms required by the CRT heater is also
supplied. The inverter consists of a 20 KHz oscillator, OE;
Q2, a power transformer, T401, and three voltage doublers,
۸208401, A2CR402, А2СЕ403, A2CR404, апа
A2CR405, A2CR406. The astigmatism control, A4R217,
utilizes the +300 V dc while the FOCUS and INTENSITY
controls, R21 and R18 respectively, require the —1000 V
dc.
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Section ll
MAINTENANCE
2.1 INTRODUCTION
This section contains information for the maintenance of
the Model ODM-1. Included are Minimum Performance
Procedures, Alignment and Adjustment Procedures and
Fault Isolation Procedures.
All ac and dc voltages displayed without tolerances on the
Schematic Diagram in Section IV are typical. The dc
voltages may vary widely (+100%, -50%) and the ac
voltages may vary widely (+6 dB) due to component
tolerances and beta ranges of the transistors. This does not
imply that instruments in which measured voltages are at
the tolerance extremes will not perform to the specifi-
cations, since the instrument has been designed to allow for
these tolerances.
NOTE
The procedures in this section are related
directly for use with the Model FM-10
Mainframe. Where procedures deviate for
use with Model FM-10C Mainframe, the
information is provided in brackets, e.g.
2.2 PRELIMINAR Y INFORMATION
2.2.1 Alignment Interval
To ensure instrument accuracy check the Model ODM-1
performance using the Minimum Performance Procedures
every 1000 hours of operation, or every six months if used
occasionally.
2.2.2 Singer Customer Service
Both Factory and Field Centers provide instrument service
and repair. Contact your local Singer representative for
additional information.
2:253 Minimum Performance Procedures Defined
The performance of the instrument can be checked without
removing the covers or performing internal adjustments by
the use of the Minimum Performance Procedures. Refer to
Paragraph 2.4. These procedures do not test every detail of
the alignment of the instrument but do check the overall
performance for accuracy and correct operation within
allowable tolerances.
2.2.4 Alignment and Adjustment Procedures Defined
The completion of each step of the Alignment and
Adjustment Procedure (refer to Paragraph 2.5) ensures that
the instrument meets the electrical specifications provided
in Section II of the Operator's Manual. For best overall
instrument performance when performing a complete
Alignment and Adjustment Procedure, adjust each trimmer
as close as possible to the exact Figure, even though the
Minimum Performance Procedures indicate that the
operation is within the allowable tolerance.
2.2.5 Interchangeability
The plugin module interfaces have been designed to
provide full interchangeability when both modules and
Mainframes have been correctly aligned and adjusted.
Factory procedures require numerous standard signal
sources and standardized test fixtures to ensure inter-
changeability. However, to avoid excessive equipment
requirements for field maintenance, this procedure utilizes
some signals and power from the Mainframe, with certain
steps included, that are identified by placing parentheses
around the step; e.g. (a.), to verify Mainframe standard-
ization and thus maintain interchangeability. A Mainframe
standardized to these requirements may be retained as a
module testing fixture if interchangeability is required.
However, if the Mainframe and module under test are
intended to be used together exclusively with no need for
interchangeability, the procedure may be shortened by
omitting these standardization steps.
2.3 TEST EQUIPMENT REQUIRED
The test equipment required for the Minimum Performance
Procedures, Alignment and Adjustment Procedures, and
Fault Isolation Procedures is listed in Table 2-1. Minimum
Specifications are provided to aid in the selection of
equivalent types.
2.4 MINIMUM PERFORMANCE PROCEDURES
The Minimum Performance Procedures provide a con-
venient verification of overall performance of the main
functions of the Model ODM-1 when installed in a Model
FM-10 or Model FM-10C Mainframe, and may be used
initially to determine the need for alignment and adjust-
ment and also to verify overall performance upon the
completion of Alignment and Adjustment Procedure.
Since this procedure is performed with the module plugged
into a Mainframe, the results may be influenced by the
alignment and adjustment of the individual mainframe
unless it has been standardized. (Refer to Paragraph 2.2.5,
Interchangeability.)
NOTE
The equipment should be checked at a
temperature of 25°C £5'C for best overall
performance.
241 Evaluation of Focus and Intensity
a. Install the Model ODM-I into the right-hand
compartment of the Mainframe. Set PWR OFF
switch on.
b. Set INTENSITY control fully cw.
Set FOCUS control to mid-range.
Set VERT IN switch to EXT.
e. Set MOD MODE switch to INT/COMB.
Allow 5 to 10 seconds for the CRT filament to
warm up.
g. Vary VERT CENTER and HORIZ CENTER con-
trols until CRT trace is centered.
== ©
rt
2-1
Instrument
Audio oscillator
Ac voltmeter
Signal generator/
Peak deviation
monitor
Oscilloscope with
1 X probe
Distortion analyzer
Frequency counter
VOM
Dc digital voltmeter
Sweep generator
Dc power supply
Mainframe
Extender cable
Connector
Capacitors
Resistors
Modulation module
2-2
EMT,
Table 2-1. Test Equipment Requirements — Model ODM-1
Minimum Specifications
Frequency response: 45 Hz to 30 kHz
Output level: 25 mV to 400 mV rms
Frequency response: 50 Hz to 2 MHz
Input level: 100 mV to 400 mV rms
Input resistance: 1 megohm, minimum
Input capacitance: 35 pF maximum
Frequency range: 25 MHz to 150 MHz
Output impedance: 50 ohm nominal
Output level: 6 mV rms to 60 mV rms
Stability: +0.0004%/5 min. minimum
Leveling: ۶1.0 dB
Frequency response: 2 MHz
Vertical sensitivity: 5 mV/cm
Frequency response: 1 kHz
Input level: 1.0 V rms
Accuracy: *0.1%
Frequency response: 1 kHz
Input level: 1.0V rms
Input level: 0 to 1100 V dc
Input level: 1 mV to 1000 mV dc
Accuracy: *0.1% of indication
Frequency range: 2 MHz
Output level: —27 dBm
Output level: 9 V dc at 1.0 Amp.
Required for testing Model ODM-1 module
Required for testing Model ODM-1 module
16 pin
0.1uF, 100 uF
16 ohm (3), 62 ohm, 100 ohm, 180 ohm,
200 ohm, 560 ohm (all +5%, 1/4 watt)
Required for testing Model ODM-1 with
Model FM-10 Mainframe
Recommended
Manufacturer
Hewlett-Packard
Hewlett-Packard
Singer
Tektronix
Hewlett-Packard
Hewlett-Packard
Simpson
Hewlett-Packard
Wavetek
Hewlett-Packard
Singer
Singer
Amphenol
Not applicable
Not applicable
Singer
200CD
400D
FM-2748
with
ODM-1
531 with
53/54B
plug-in
333A
5512A
269
3440A
2001
6214A
FM-10 with
AFM-2 module
or FM-10C with
RFM and FIM
modules
PC2653
26-190-16
AFM-2
XA = Alignment and Adjustment and Fault Isolation
M = Minimum Performance
2.42
Vary FOCUS and INTENSITY controls for sharp-
est trace with adequate intensity.
Verify that CRT trace is bright enough to be
visible in a normally-lit room. Verify that FOCUS,
VERT CENTER, and HORIZ CENTER controls
are approximately at mid-range.
Evaluation of Vertical and Horizontal Center
Control Range
Rotate VERT CENTER control from fully cw to
fully ccw.
Verify that CRT trace deflects beyond calibrated
portion of graticule vertically when VERT
CENTER control is rotated throughout its range.
Return VERT CENTER control to mid-range.
Rotate HORIZ CENTER control from fully cw to
full ccw.
Verify that ends of trace deflect horizontally to at
least mid-screen when HORIZ CENTER control is
rotated throughout its range.
Return HORIZ CENTER control to mid-range.
Verify that trace is centered on CRT with controls
set at approximately mid-range.
Evaluation of Sweep Range
Rotate VERT GAIN control fully cw.
Set VERT IN switch to EXT.
Connect audio oscillator and ac voltmeter to
VERT IN receptacle.
Set audio oscillator frequency to 50 Hz and set ac
voltmeter to 30 mV scale.
Rotate SWEEP SPEED control fully ccw.
Set SWEEP RANGE switch to LO.
Increase audio oscillator output level until sine
wave on CRT deflects to full-scale. Vary audio
oscillator frequency for a stationary, one-cycle
sine wave on CRT.
Verify that audio oscillator frequency is less than
50 Hz (approximately 45 Hz).
Rotate SWEEP SPEED control fully cw.
Set SWEEP RANGE switch to HI.
Vary audio oscillator frequency for a stationary,
one-cycle sine wave on CRT.
Verify that audio oscillator frequency is greater
than 5 kHz and deflects across entire CRT.
Rotate SWEEP SPEED control fully ccw.
Vary audio oscillator frequency for a stationary,
one-cycle sine wave on CRT.
Verify that audio oscillator frequency is less than
500 Hz (approximately 450 Hz).
Set SWEEP RANGE switch to LO.
Rotate SWEEP SPEED control fully ccw.
Vary audio oscillator frequency for a stationary,
one-cycle sine wave.
Verify that audio oscillator frequency is greater
than 500 Hz (approximately 550 Hz).
2.4.4
2.4.5
2.4.6
Evaluation of Vertical Sensitivity
Set audio oscillator frequency to 1 kHz.
Set SWEEP RANGE switch and vary SWEEP
SPEED control for a stationary pattern on CRT.
Vary output level of audio oscillator for full-scale
deflection on CRT.
Verify that audio oscillator output level is between
22 mV and 27 mV rms.
Evaluation of Vertical
Response
Amplifier Frequency
Vary audio oscillator output level to obtain
exactly full-scale deflection on CRT at 1 kHz
frequency.
Increase audio oscillator frequency to 30 kHz and
note p-p deflection on CRT.
Decrease audio oscillator frequency to 50 Hz and
note p-p deflection on CRT.
Verify that signal on CRT did not change more
than 3 dB (less than 3 divisions p-p) from 50 Hz to
30 kHz.
Evaluation of Measure Indicator Sensitivity
(a.) Install a Model AFM-2 in the Model FM-10
Mainframe [With Model FM-10C Mainframe dis-
regard this step.]
Connect signal generator to the left-hand module
MEASURE INPUT receptacle and set signal
generator frequency to 151 MHz. [With Model
FM-10C set the left-hand module to maximum
sensitivity.]
(c. Connect the ac voltmeter to the IF OUTPUT
receptacle of the AFM-2 to monitor the 2 MHz IF
output level. [With Model FM-10C connect the ac
voltmeter to the back panel ACC receptacle Pin
A.]
Set the Mainframe Frequency switches to 153.000
MHz, 0-1 kHz control to OUT. Zero beat for
accuracy. [With Model FM-10C set Frequency
switches to 151.0000 MHz, 0-100 Hz control to
OUT.]
(e.) Vary the signal generator output level to obtain
(f)
exactly 2.5 mV indicated on the ac voltmeter.
Note this signal generator output level for Step h.
and i.
Remove the Model AFM-2 from the Mainframe
[With Model FM-10C disregard this step].
Install the Model ODM-1 in the Mainframe.
Vary the signal generator output level to deter-
mine the turn-on threshold of the OPER indicator
lamp. This level should be within +1 dB of the
level obtained in Step (e.). If Steps (a.), (c.) (e.)
and (f.) are omitted, the level should be within +3
dB of nominal sensitivity for the left-hand module.
Increase the generator output level approximately
20 dB and vary the level to determine the turn-on
threshold of the OVLD indicator lamp. This level
should be 20 dB £2 dB above the level obtained in
Step (e.). If Steps (a.), (c.), (e.) and (f.) have been
omitted, the level should be 20 dB +3 dB above
the nominal sensitivity for the left-hand module.
2-3
2.4.7
2-4
Evaluation of Deviation Indication Accuracy
Set Model FM-10 Mainframe Frequency
switches to 8 MHz, 0-1 kHz control to OUT, and
10 MHz switch to IN. [Set Model FM-10C
Mainframe Frequency switches to 000.0000,
0-100 Hz control to OUT, and MODE switch to
TONE GEN].
Set VERT IN switch to EXT, vary VERT
CENTER control to position CRT trace exactly on
the O line. Set VERT IN switch to INT and DEV
RANGE switch to 1.5 kHz. Vary the DC BAL
control to position CRT trace exactly on the 0
line.
Set Model FM-10 Mainframe Frequency switches
to 008.002 MHz. Verify that the CRT trace
deflects downward to the —20 kHz line +1/2
division. [Set Model FM-10C Mainframe Fre-
quency switches to 000.0015. Verify that the CRT
trace deflects downward to the —15 kHz line +1/2
division] .
Set Model FM-10 Mainframe Frequency switches
to 007.998 MHz. Verify that the CRT trace
deflects upward to the 20 kHz line +1/2 division.
[With Model FM-10C disregard this Step].
Set the Model ODM-1 DEV RANGE switch to 5
kHz.
Set Model FM-10 Mainframe Frequency switches
to 008.000 MHz. [Set Model FM-10C Mainframe
Frequency switches to 000.0000 MHz]. Verify
that CRT trace is exactly centered on 0. If not,
repeat Step b.
Set Model FM-10 Mainframe Frequency switches
to 008.005 MHz. [Set Model FM-10C Mainframe
Frequency switches to 000.0050 MHz]. Verify
that the CRT trace deflects downward to the —5
kHz line #1/2 division.
Set Model FM-10 Mainframe Frequency switches
to 007.995 MHz. Verify that the CRT trace
deflects upward to the +5 kHz line +1/2 division.
[With Model FM-10C disregard this Step].
Set the Model ODM-1 DEV RANGE switch to 15
kHz.
Set Model FM-10 Mainframe Frequency switches
to 008.000 MHz. [Set Model FM-10C Mainframe
Frequency switches to 000.0000 MHz]. Verify
that CRT trace is exactly centered on O. If not,
repeat Step b.
Set Model FM-10 Mainframe Frequency switches
to 008.015 MHz. [Set Model FM-10C Mainframe
Frequency switches to 000.0150 MHz]. Verify
that the CRT trace deflects downward to the —15
kHz line +1/2 division.
Set the Model FM-10 Mainframe Frequency
switches to 007.985 MHz. Verify that the CRT
trace deflects upward to the +15 kHz line +1/2
division. [With Model FM-10C Mainframe set
MODE switch to GEN MOD CAL, GENERATOR
MODULATION switch ON (in) and vary the
Model ODM-1 INT MOD control, SWEEP RANGE
and SWEEP SPEED to display the 1 kHz wave-
form with its lower peak exactly on the —15 kHz
line. Verify symmetry by checking that the upper
peak is within ۶1/2 division of the +15 kHz line].
2.4.8
2.4.9
2.4.10
2.4.11
Evaluation of Internal Modulation
Set Model FM-10 Mainframe Frequency switches
to 8 MHz, 100 kHz Frequency switch to V, 0-1
kHz control to 0 (not OUT), and 10 MHz switch
to IN. [Set Model FM-10C Mainframe MODE
switch to GEN MOD CAL and GENERATOR
MODULATION switch to IN/ON].
Set MOD MODE switch to INT/COMB.
Set DEV RANGE switch to 15 kHz.
Rotate INT MOD/AUDIO OUT control to fully
cw and verify that trace exceeds full-scale
deflection.
Vary INT MOD/AUDIO OUT control for full-scale
deflection of CRT trace.
Evaluation of Internal/Combined and External
Mode
Set Model FM-10 Mainframe Frequency switches
to 8.0V0, 0-1 kHz Frequency control to O (not
OUT), and 10 MHz switch to IN. [Set Model
FM-10C Mainframe Frequency switches to
000.000, 0-100 Hz Frequency control to OUT,
MODE switch to GEN MOD CAL, and
GENERATOR MODULATION switch to IN/ON].
Set DEV RANGE switch to 5 kHz.
Vary INT MOD/AUDIO OUT control for a full-
scale deflection of trace. i
Set MOD MODE switch to EXT.
Connect audio oscillator to EXT MOD/HORIZ IN
receptacle.
Set audio oscillator for a frequency of 1 kHz and
vary output level for full-scale deflection on CRT.
Verify that audio oscillator output level is 400 mV
rms +10%. [80 mV rms +20% for Model FM-10C
Mainframes] .
Set MOD MODE switch to INT/COMB and verify
display of two 1 kHz signals beating.
Evaluation of External Horizontal
Capability
Set MOD MODE switch to EXT HORIZ. Connect
audio oscillator to EXT MOD/HORIZ IN
receptacle and set frequency to 1 kHz.
Sweep
Increase audio oscillator output level until trace is
deflected beyond the full-scale of CRT.
Verify that amplitude required for full-scale
deflection is less than 500 mV rms.
Evaluation of Audio Output Frequency, Level,
and Distortion
Connect ac voltmeter and frequency counter to
AUDIO OUT 1 kHz 600 Q receptacle.
Connect a 600 ohm resistive load across the ac
VTVM terminals.
Rotate INT MOD/AUDIO OUT control fully cw.
Note indications on ac voltmeter and frequency
counter.
Verify that frequency is 1 kHz +5%. Level should
be 1.0 V rms minimum into 600 ohm.
2.5
2:51
252
[fa +9Vdc 6 1.0A
Disconnect frequency counter from AUDIO OUT
1 kHz 600 Q receptacle and connect distortion
analyzer.
Calibrate distortion analyzer at 1 kHz and note the
distortion. Distortion should be less than 192.
ALIGNMENT AND ADJUSTMENT
PROCEDURE
NOTE
The Alignment and Adjustment Pro-
cedure is performed with the Model
ODM-1 disconnected from the mainframe
so that any problem in the mainframe
will not affect the alignment of the Model
ODM-1. Remove the five screws from the
back of the Model ODM-1 module and
slide the cover off the back.
NOTE
The equipment should be checked at a
temperature of 25°С +5°C for best overall
performance.
WARNING
High voltages are present throughout the
instrument and appropriate precautions
should be taken while operating the
instrument with the cover removed.
Test Connector Wiring
See Figure 2-1 for schematic diagram of test
connector wiring.
JEN SWEEP GENERATOR
INPUT
2MHz
| PUT
MARKER GENERATO! FN
INPUT
RECOVERED AUDIO
OUTPUT
FM MODULATION
OUTPUT
GROUND
Figure 2-1. Test Connector Schematic Diagram
Location and Adjustment of Trace
Connect the test connector to the Model ODM-1
and set the Model ODM-1 controls as follows:
INTENSITY
VERT CENTER
Fully cw
Mid-range
VERT IN EXT
MOD MODE INT/COMB
HORIZ CENTER Mid-range
b. Connect the VOM between pins E103 and E104
on the vertical amplifier assembly, A3. (See Figure
2-2).
MODUL ATION
SENSITIVIT Y
ADJ
R129 E116
О
Tem
o
E114
R112 Rill se R105
= TARM AMP
ZERO J
SET AR
“SELECTED COMPONENTS
Figure 2-2. Trimmer Locations,
Vertical Amplifier Assembly, A3
c. Adjust A3R105 for O V dc on the VOM.
d. The trace should be visible. If so, set the SWEEP
RANGE switch to LO and the SWEEP SPEED
control fully ccw.
e. If the trace is not visible, connect the VOM
between pins E212 and E213 on the horizontal
amplifier assembly, A4. Adjust the HORIZ
CENTER control for 0 V dc on the VOM. (See
Figure 2-3).
f. The trace should now be visible. If not, connect
the digital voltmeter to pin A4E211 and ground.
Adjust A4R217 (Astigmatism) for approximately
*150 V dc on the digital voltmeter.
g. If the trace is still not visible, check the CRT
socket wiring. If the wiring is correct, substitute
another CRT.
2.5.3
a. Connect the sweep generator RF output receptacle
to the test connector “sweep generator” input.
b. Connect the frequency
тегер асе تا с тет
generator” input.
IF Sweep Alignment
source КЕ
connector
output
* marker
2-5
(ASTIGMATISM)
ADJ
(Horizontal A
GAIN SET
SWEEP
SPEED-LOW| ۶4
ADJUST
SWEEP
SPEED-HIGH] ۶
ADJUST
Figure 2.3. Trimmer Locations,
Horizontal Amplifier Assembly, A4
c. Connect the BNC test cable via the 0.1 uF
capacitor to AITP2. Connect the BNC end to the
oscilloscope vertical input receptacle. (Figure 2-4)
BNC CONNECTOR
Figure 2-4. BNC Test Cable/
Capacitor Schematic Diagram
d. Connect the sweep generator horizontal output
receptacle to the oscilloscope external horizontal
input receptacle.
e. Set the sweep generator to sweep between 1.95
MHz and 2.05 MHz and RF output level to
approximately —27 dBm.
f. On the oscilloscope, set the horizontal display
switch to external and the external horizontal
attenuator as necessary to display the response
curve, set the time/centmeter switch to 2 sec., and
vary the vertical sensitivity as necessary to display
the response curve.
g. Set the frequency source to 2 MHz and adjust its
output level for a visible marker on the oscillo-
scope. Vary the sweep generator center frequency
and sweep width controls so that the response
curve is centered on the oscilloscope and has
approximately the same width as in Figure 2-5.
р. Adjust А11501, AILSO2 and A1L503 for
maximum amplitude and to set the center of the
response curve on the 2 MHz marker.
2-6
Figure 2-5. Center Frequency Adjustment Waveform
RSIG ( зер)
R5|7>
СЕЕ З
L504 (amoko)
TP.
= R565 ж-
ADJ
R566/ 1 kHz
|| AMPLITUDE
E508
(OVLD. ADJ) R527
ESI7 H— —— R56 |
(OPER. ADJ) R528 == eca ТЕНЕ
FREQ.
E509 ADJ
ESI2
*Selected Component
Figure 2-6. Trimmer Locations,
IF Amplifier Assembly, A1
i. Adjust AILSO2 and AIL503 for the flattest
response and optimum balance on both sides of
the 2 MHz marker.
j. Vary the oscilloscope vertical sensitivity so that
the response curve is vertically deflected 4 cm.
k. Set the frequency source frequency to 1.975 MHz
and 2.025 MHz alternately and verify that the
markers are not down on the slopes more than 3
dB (70% of maximum deflection). (Figure 2-7)
l. Disconnect the BNC test cable from the oscillo-
scope vertical input receptacle and connect the 1X
probe.
2.5.4
2.5.5
Figure 2-7. Bandwidth Adjustment Waveform
. Connect the 1X probe to A1E518 and verify that
an "S" curve is present.
Disconnect the sweep generator from the test
connector and connect the ac voltmeter to
А1Е501. Set the frequency generator output level
for 2.5 mV rms on the ac voltmeter.
Connect the oscilloscope probe to AITP3 and
verify that a square wave of approximately 1.4 V
p-p is present.
Connect the oscilloscope probe to A1TP4 and
verify that 2 MHz sine wave is present with pips
near the peaks. Adjust A1L504 so that the pips are
exactly on the peaks of the sine wave.
Level Detector Adjustment
Connect the digital voltmeter to A1TP1 and adjust
A1L506 for maximum voltage on the digital
voltmeter. It should be 1.8 V dc minimum.
Adjust A1R528 until the OPER lamp just lights.
Set the signal generator output level to 25 mV rms
at 1۰
Adjust AIR527 until the OVLD lamp just lights.
The OPER lamp should be extinguished.
Repeat Steps b. thru d. until both lamps function
as described.
Repeat Step b. and adjust A1L506 slightly in both
directions while observing the OPER lamp. If more
than 1/2 turn in either direction is required before
the OPER lamp extinguishes repeat Steps b. thru f.
Trace Alignment and Focus
Loosen the CRT clamp screw and set the trace on
the O center line of the CRT graticule with the
VERT CENTER control.
Grasp the large end of the CRT (away from the
high voltage) and rotate it until the trace is parallel
to the O center line, then rotate it so that the
right-hand end of the trace is 1/3 division above
the O center line. This is to compensate for cw
251
rotation of the CRT when the clamp screw is
tightened. Tighten the clamp screw.
Repeat Step a. and b. as necessary to align trace
exactly parallel with the O center line.
Set the FOCUS control to mid-range and adjust
A4R217 (Astigmatism) for the sharpest trace.
Offset and Vertical Amplifier Gain Adjustment
Set the VERT IN switch to EXT, VERT
COUPLING switch to DC and set the VERT
CENTER and DC BAL controls to the mid-range
positions.
Set the DEV RANGE switch to 5 kHz. Adjust
АЗК105 (vertical position) to position the trace
on the 0 center line.
Set the signal generator frequency to 2.0 MHz and
output level to 2.5 mV rms.
Set the VERT IN switch to INT and adjust
А1К516 (offset adjust) to position the trace on
the 0 center line. If unable to position the trace on
the O center line, select the value of A1R517.
Connect the digital voltmeter to A1ESO7 and
verify the presence of 0 V dc 50.1 V dc.
Set the signal generator frequency to 2.005 MHz
and note the indication on the digital voltmeter.
Set the signal generator frequency to 1.995 MHz
and note the indication on the digital voltmeter.
The voltage deviations obtained in Steps f. and g.
should be equal above and below the voltage
measured in Step e. If they are unequal, adjust
A1L504 to add or subtract 1/2 the inequality and
repeat Steps e. thru g. until this condition is met.
Set the VERT IN switch to EXT and adjust
АЗК105 to position the trace on the O center line.
Set the signal generator frequency to 2.005 MHz.
Set the VERT IN switch to INT and adjust
A3R112 (vertical gain) to position the trace on the
*5 kHz line.
Repeat Step i.
Repeat Steps i., k. and l. until the conditions are
met, because A3R105 and A3R112 interact with
one another.
Set the signal generator frequency to 1.995 MHz.
Set the VERT IN switch to INT. The trace should
be on the —5 kHz line of the graticule. If it is not,
repeat Steps d. thru n. until the conditions are
met.
Set the signal generator frequency to 2.0 MHz.
Set the DEV RANGE switch to the 1.5 kHz and
15 kHz positions. Verify that the trace remains on
the О center line £1/2 division.
External Vertical Gain Adjustment
Set the VERT IN switch to EXT, VERT GAIN
control to fully cw, VERT CENTER control to
position trace on O center line of the CRT and
VERT COUPLING switch to the AC position.
Connect the ac VTVM and the audio oscillator to
the VERT IN receptacle.
2-7
2.5.8
2-8
Set the audio oscillator frequency to 1 kHz and
output level to produce full-scale deflection on the
CRT.
The ac voltmeter should indicate 25 mV rms +10%
(22.5 mV to 27.5 mV rms).
If the level required for full-scale deflection is less
than 22.5 mV rms, increase the value of 11
from 9.1 kilohm to 10 kilohm. Disconnect the
audio oscillator and repeat Steps 2.4.4-a. thru
2.4.7 d.
If the level required for full-scale deflection is
greater than 27.5 mV rms, decrease the value of
AIR511 from 9.1 kilohm to 8.2 kilohm. Dis-
connect the audio oscillator and repeat Steps
2.4.4-a. thru 2.4.7-d.
Repeat Steps a. thru f. with the
COUPLING switch in the DC position.
VERT
Sweep Range Adjustment
Set the Model ODM-1 controls as follows:
VERT CENTER To center trace
on graticule
HORIZ CENTER To center trace
on graticule
SWEEP RANGE LO
SWEEP SPEED Fully ccw
VERT IN EXT
VERT GAIN Fully cw
Connect the audio oscillator to the VERT IN
receptacle. Set the audio oscillator frequency to
45 Hz and adjust its output level for full-scale
deflection on the CRT.
Adjust A4R204 for a one-cycle stationary display
on the CRT.
Set the oscillator frequency to 5.2 kHz. Set the
SWEEP RANGE switch to HI and the SWEEP
SPEED control fully cw.
Adjust A4R202 for a one-cycle stationary display
on the CRT.
Repeat Step c. thru e.
Set the SWEEP RANGE switch to HI and the
SWEEP SPEED control to fully ccw. Vary the
audio oscillator frequency control to produce a
one-cycle stationary display.
The audio oscillator frequency should be less than
500 Hz.
Set the SWEEP RANGE switch to LO and the
SWEEP SPEED control to fully cw.
Vary the audio oscillator control to produce a
one-cycle stationary display.
The audio oscillator frequency should be greater
than 500 Hz.
Set the SWEEP RANGE switch to HI and the
SWEEP SPEED control fully cw.
Set audio oscillator frequency to 1 kHz.
Adjust A4R213 until the trace extends slightly
beyond the edges of the CRT.
2.3.9
2.5.10
2.6
Modulation Oscillator Adjustment
Connect the ac voltmeter (with 560 ohm resistor
across terminals), frequency counter and dis-
tortion analyzer to the AUDIO OUT receptacle.
Set the INT MOD/AUDIO OUT control fully cw.
Adjust A1R562 for 1 kHz +1 Hz on the frequency
counter. If not enough range, select the value of
AIRS61.
Adjust AIR566 for 1.15 V rms on the ac
voltmeter. If not enough range, select the value of
A1R565.
Repeat Steps c. and d. until both are as specified.
Set the output level to 1.0 V rms with the INT
MOD/AUDIO OUT control. Calibrate the dis-
tortion analyzer at 1 kHz and measure the
distortion. The distortion should be less than 1%.
Disconnect the equipment installed in Step a.
Modulation Sensitivity Adjustment
Connect the ac voltmeter to the EXT MOD/
HORIZ IN receptacle and vary the audio oscillator
output level for 400 mV rms +0.5%.
Connect the ac voltmeter across the 5.6 kilohm,
resistor on the test connector.
Adjust A3R 129 for 500 mV rms +0.5% indication
on the ac voltmeter.
Distortion Analyzer Amplifier Adjustment
Connect the digital voltmeter to pin 2 of the DIST
ANAL receptacle and verify that +9 V dc +1% is
present.
Connect the digital voltmeter to pin 4 of the DIST
ANAL receptacle.
Select the value of ۸3۳۴119 to obtain +4.50 V dc
+0.25 V on the digital voltmeter.
FAULT ISOLATION PROCEDURES
Fault Isolation Procedures are presented to provide a guide
in servicing the Model ODM-1. The procedures follow the
sequence of the Minimum Performance Procedures, Para-
graph 2.4, with each subsection keyed to the step in
Paragraph 2.4 that first indicates a fault. When a fault is
noted during Model ODM-1 operation, proceed as follows:
a.
Perform Minimum Performance Procedures in
Paragraph 2.4.
Start Fault Isolation Procedures at the point where
minimum performance cannot be satisfied.
When the fault is isolated to a function, such as
the discriminator, refer to the alignment procedure
for that function in Paragraph 2.5, and check
alignment of function before proceeding with fault
isolation.
After a fault is repaired, complete the Minimum
Performance Procedures to determine if further
alignment is necessary.
WARNING
High voltages are present throughout the
instrument. Appropriate precautions
should be taken while operating the
instrument with the cover removed.
2.6.01 No Trace (2.4.1-g.)
a. Remove socket from V1 (CRT) and check 1
voltages as displayed on Figure 4-1.
b. If voltages are within tolerance, replace ۰
c. If any voltage is absent or out of tolerance, check
voltage source on assembly A2, A3, or A4 output
terminals. (See Figure 2-8).
UM.
£417
E421 E422 E420
Figure 2-8. Trimmer Locations,
Power Supply Assembly, A2
d. If voltages are within tolerance at A2, A3, or A4
output terminals check wiring harness for open or
shorted leads.
e. If any voltage is absent or out of tolerance at
output terminals of A2, A3, or A4 use voltages
and waveforms displayed on Figure 4-1 to isolate
the fault.
2.6.2 Vertical Centering Defective (2.4.1-g.)
a. Check voltages at V1-9 and V1-10. Voltage should
vary over an 80 V minimum span within the range
of +95 V dc to +235 V dc as the VERT CENTER
control is rotated throughout its range.
b. If voltages are within tolerance, replace ۰
c. If voltages are not within tolerance, check voltage
at A3E119. This voltage should vary from less
than *0.1 V dc to greater than *2.3 V dc as the
VERT CENTER control is rotated throughout its
range.
d. If voltage at A3E119 is within tolerance, use
voltages and waveforms on Figure 4-1 to isolate
fault on assembly, A3.
e. If voltage at A3E119 is not within tolerance,
check R8, R9 and associated wiring.
2.6(3 Horizontal Centering Defective (2.4.1-g.)
a. Check voltages at V1-6 and V1-7. Voltages should
vary over a 240 V minimum span within the range
of 0 V dc to +330 V dc as the HORIZ CENTER
control is rotated throughout its range.
b. If voltages are within tolerance, replace МІ.
c. If voltages are not within tolerance, check voltage
at A4E208. This voltage should vary from 0 V dc
to +4.8 V dc nominal as HORIZ CENTER control,
R12, is rotated throughout its range.
d. If voltage at A4E208 is not within tolerance,
check voltage at A4E209. Voltage should be 3
V dcto +5.3 V dc.
e. If voltage at A4E208 is within tolerance, use
voltages and waveforms on Figure 4-1 to isolate
fault on assembly A4.
2.6.4 Focus Defective (2.4.1-h.)
a. Check voltage at V1-5. Voltage should vary over at
least a 100 volt span within —650 V dc and —920
V dc as FOCUS control, R21, is rotated through-
out its range.
b. If voltage is within tolerance, change МІ.
c. If voltage is not within tolerance, check for —1000
V de 2109 at A2E417.
d. If voltage is within tolerance at A2E417, check
wiring and neon indicator, ۰
e. If voltage at A2E417 is out of tolerance, use
Figure 4-1 voltages and waveforms to isolate fault
on assembly A2.
2.6.5 Intensity Defective (2.4.1-h.)
NOTE
The Model ODM-1 operates in Main-
frames designed for 12 V dc operation.
The normal maximum intensity is not as
high as that of oscilloscopes designed for
115 V ac operation because a lower
power CRT is used to conserve current
drain during battery operation.
a. Check voltage at У1-3 and check that voltage
varies over a 50 volt span within the range of —850
V dc to —1100 V dc as INTENSITY control, R18,
is rotated throughout its range.
b. Ifvoltage is within tolerance, replace, V1.
c. If voltage is out of tolerance, check voltage at
A2E417.
d. If voltage is within tolerance at A2E417, check
associated wiring and INTENSITY control, R18.
e. If voltage at A2E417 is out of tolerance, use
Figure 4-1 voltages and waveforms to isolate fault
in assembly, A2.
2.6.6 Vertical Center Control Defective (2.4.2-b.)
Perform procedures of Paragraph 2.6.2.
2.6.7 Horizontal Center Control Defective (2.4.2-e.)
Perform procedures of Paragraph 2.6.3.
2.6.8 | Sweep Speed Cannot Adjust Below 50 Hz оп Low
Range (2.4.3-h.)
a. Check resistance of A4E203 to ground. If
resistance is greater than 10 ohms, check wiring of
SWEEP RANGE switch, S4.
2-9
2.6.9
2.6.10
If A4E203 is grounded, check voltage at A4E202
to determine if voltage varies over a span of at
least 0.6 V dc within the range of +7.4 V dc to
поо V des
If voltage is within tolerance, use voltages and
waveforms on Figure 4-1 to isolate fault on
assembly, A4.
Sweep Speed Cannot Adjust Above 5000 Hz on
High Range (2.4.3-1.)
Check resistance of A4E203 to ground. If
resistance is less than 100 kilohms, check wiring of
SWEEP RANGE switch, S4.
If resistance is greater than 100 kilohms, check
voltage at A4E202 to determine if voltage varies
over a span of at least 0.6 V dc within the range of
*7.4 V dc to 19.9 V dc.
Sweep Speed Cannot Adjust Below 500 Hz on
High Range (2.4.3-o.)
Perform procedures of Paragraph 2.6.9.
2.6.11
Sweep Speed Cannot Adjust Above 500 Hz on
Low Range (2.4.3-s.)
Perform procedures of Paragraph 2.6.8.
2.6.12
2.6.14
2.6.15
2-10
External Vertical Input Sensitivity Not Within
Specification (2.4.4-d.)
Apply a 1 kHz signal with a level of 25 mV rms to
EXT VERT receptacle and check voltage with
oscilloscope at A3E101. Voltage should be 70 mV
р-р.
If voltage is not 70 mV р-р, check VERT GAIN
control, R7, R6 and associated wiring.
If voltage is 70 mV p-p, use voltages and wave-
forms on Figure 4-1 to isolate fault.
Vertical Amplifier Frequency Response Not
Within Specification (2.4.5-d.)
Check voltage at A3E101. Verify that voltage
changes less than 1 dB from 50 Hz to 30 kHz.
If voltage changes more than 1 dB over this range,
check СІ, R6, R7 (VERT GAIN), 51 and
associated wiring.
If voltage does not vary more than 1 dB, use
voltages and waveforms of Figure 4-1 to isolate
fault on assembly A3.
Operate Indicator Sensitivity Not Within
Specification (2.4.6-h.)
Connect ac voltmeter to А1Е501 and ground.
Verify that 2 MHz level is 2.5 mV rms 10%.
If level is not 2.5 mV rms +10% at А1Е501, the
fault is in the Mainframe. Refer to Mainframe
Maintenance Manual.
If level is 2.5 mV +10% at A1E501, use Figure 4-1
voltages and waveforms to isolate fault on
assembly, Al.
Overload Indicator Sensitivity Not Within
Specification (2.4.6-i.)
Connect ac voltmeter to А1Е501 and ground.
Verify that 2 MHz level is 25 mV rms +10%.
2.6.16
2.6.17
If level is not 25 mV rms +10% at А1Е501, the
fault is in the Mainframe. Refer to Mainframe
Maintenance Manual.
If level is 25 mV rms +10% at A1E501, use Figure
4-1 voltages and waveforms to isolate fault on
assembly, Al.
5 kHz Range Gain Not Within Specification
(2.4.7-h.)
Connect dc digital voltmeter to А1Е507 and
ground. Verify that voltage is +233 mV dc +20
mV.
If voltage is not +233 mV dc +20 mV at А1Е507,
use Figure 4-1 voltages and waveforms to isolate
fault on assembly, A1.
If voltage at ۸۱۳507 is correct, check voltage on
A3E101. Verify that voltage is +233 mV dc +20
mV.
If voltage at A3E101 is correct, use Figure 4-1
voltages and waveforms to isolate fault on vertical
amplifier assembly, A3.
If voltage is not +233 mV dc £20 mV at A3E101,
check DEV RANGE switch S2, R2, R3, R4 and
associated wiring.
15 kHz Range Gain Not Within Specification
(2.4.74.)
Repeat procedures of Paragraph 2.6.16 except that voltage
at А1Е507 and A3E101 should be —400 mV dc +40 mV.
2.6.18
2.6.19
Insufficient Vertical 15 kHz
(2.4.8-d.)
Connect ac voltmeter to A3E114 and ground.
Verify that voltage is 480 mV rms minimum.
If voltage at A3E114 is greater than 480 mV rms,
the fault is in the Mainframe. Refer to Mainframe
Maintenance Manual.
If voltage at A3E114 is less than 480 mV rms,
check voltage between A3E116 and ground.
Verify that voltage is 113 mV rms minimum.
If voltage at ۸3۳116 is greater than 113 mV rms
connect audio oscillator to EXT MOD/HORIZ IN
receptacle, set MOD MODE switch to EXT, set
oscillator to 400 mV rms and adjust A3R129 for a
400 mV rms indication at A3E114.
If unable to obtain correct voltage at ۸3۳۱14, use
Figure 4-1 voltages and waveforms to isolate fault
in A3U102 circuit
If voltage at ۸3۳116 is not correct, check R14,
R15, R16 and MOD MODE switch, S4, wiring.
Verify that voltage at AIESI3 is 321 mV rms
11090.
If voltage at A1E513 is not correct, check INT
MOD/AUDIO OUT control, R13, and associated
wiring. Verify that voltage at ۸1۳512 is 640 mV
rms 21095.
If voltage at ۸1۳512 is not correct, use Figure 4-1
voltages and waveforms to isolate fault in
modulation oscillator on assembly, Al.
Amplitude at
Insufficient Vertical Amplitude at 5 kHz in
External Mode (2.4.9-g.)
2.6.20
2.6.21
Connect ac voltmeter to EXT MOD/HORIZ IN
receptacle. Verify that voltage is 80 mV rms *20%.
If voltage is not correct, vary audio oscillator
output level to obtain this level.
If voltage is correct, verify that voltage at A3E114
is 500 mV rms +5%.
If voltage at A3E114 is correct, the fault is in the
Mainframe. Refer to Mainframe Maintenance
Manual.
If voltage is not correct at A3E114, perform Steps
2.6.18-d. and 2.6.18e.
External Horizontal
Specification (2.4.10-c.)
Set audio oscillator at 500 mV rms and measure
voltage at A4E206.
If voltage at A4E206 is less than 500 mV rms,
check S4 and associated wiring.
If voltage at A4E206 is 500 mV rms, use Figure
4-] voltages to isolate fault on assembly, A4.
Sensitivity Not Within
Audio Output Frequency Not Within Specification
(2.4.11-e.)
Use Figure 4-1 voltages and waveforms to isolate fault on
assembly, Al.
2.6.22
2.6.23
Audio Output Level Not Within Specification
(2.4.11-e.)
Check the level at A1E513. This level should be
greater than 1.2 V p-p. If it is, the fault is in stages
A1Q519 and A1Q520. Use Schematic Diagram
voltages, Figure 4-1, to isolate the fault.
If the level at A1E513 is within tolerance, check
the level at A1E512. If the level at A1E512 differs
from the level at AIES13 check R13, R14, R15,
R16, S4 and associated wiring.
If the level at A1ESI2 is equal to the level at
A1E513 and is less than 1.2 V p-p, use the voltage
and waveform information on the Schematic
Diagram Figure 4-1, to isolate the fault on
assembly, Al.
Audio Distortion ۶
(2.4.11-g.)
Connect distortion analyzer to А1Е512 and
calibrate it at 1.0 kHz. Distortion should be 0.5%
or less.
If distortion at A1E512 is greater than 0.5%, use
Figure 4-1 voltages and waveforms to isolate fault
on assembly, A1.
If distortion at A1E512 is less than 0.5% the fault
is in stages ۸10519 and A1Q520. Use Figure 4-1
voltages and waveforms to isolate the fault.
Within Specification
2-11/2-12
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Section |||
REPLACEABLE PARTS
31 INTRODUCTION
This section contains information for ordering replacement
parts. Tables 3-1 thru 3-5 list the parts according to their
functional groupings. Parts are listed in alpha-numerical
order of their reference designators and indicate the
description, the Singer part number, typical manufacturer
of the part in a five-digit code, and the manufacturer's part
number. Table 3-6 lists the typical manufacturers in
numerical code number order.
31
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Section IIl
REPLACEABLE PARTS
3.1 INTRODUCTION
This section contains information for ordering replacement
parts. Tables 3-1 thru 3-5 list the parts according to their
functional groupings. Parts are listed in alpha-numerical
order of their reference designators and indicate the
description, the Singer part number, typical manufacturer
of the part in a five-digit code, and the manufacturer's part
number. Table 3-6 lists the typical manufacturers in
numerical code number order.
31
Table 3-1. Parts List for Main Assemblies and Chassis
Singer Mfr. Mfr.
Part No. Code No. Part No.
5-003178-005
4-003202-005
4-003204-008
5-003217-005
1-900001-009
Assembly, IF
Assembly, High Voltage Power Supply
Ref.
Desig.
Al
А2
Assembly, Vertical Amplifier
Assembly, Horizontal Amplifier
Capacitor, fixed, plastic,
0.047 uF, +20%, 250 V dc
Capacitor, fixed, plastic,
0.47 uF, 12090, 250 V dc
Capacitor, fixed, ceramic,
0.02 uF, +20%, 250 V dc
Not used
Not used
C280AE,0.047uF
1-900001-021 C280AE,0.47uF
1-900012-012 5GA-S20
Capacitor, fixed, plastic, 1-900001-001
0.01 uF, +20%, 250 V dc
Lamp, indicator,
10 V, 20 mA
Lamp, indicator,
10 V, 20 mA
Lamp, indicator, neon
C280AE,0.01uF
1-925007-005 L10/20
1-925007-005 L10/20
1-925008-001
1-910043-001
1-910152-001
1-910043-001
1-910043-001
1-910071-001
NE89
KC19-68
S13B
KC19-68
KC19-68
26-159-16
J1
J2
J3
J4
۳1
Connector, jack, phone
Connector, jack, phone
Connector, jack, BNC
Connector, jack, BNC
Connector, plug, rectangular, 16 pins
Ql Transistor, silicon, NPN 1-958001-004 MJES21
Q2 Transistor, silicon, NPN 1-958001-004 МЈЕ521
ВІ Not used
R2 Resistor, fixed, film, 1-945016-580 RN60D7002F
70 kilohm, +1%, 1/8 W
Resistor, fixed, film,
20 kilohm, £126, 1/8 W
Resistor, fixed, film,
10 kilohm, £126, 1/8 W
Not used
Resistor, fixed, composition,
220 ohm, +10%, 1/4 W
Resistor, variable, composition,
25 kilohm, 12092, 1/3 W (part of S1)
Resistor, fixed, composition,
680 ohm, +10%, 1/4 W
Resistor, variable, assembly
(R9) resistor, variable, composition,
1.0 kilohm, +30%, 1/2 W
Not used
Resistor, variable, composition,
500 kilohm, +30%, 1/4 W (part of S3)
R3 1-945016-318 RN60D2002F
R4 1-945016-289 RN60D1002F
R5
R6
1-945000-029 CB2211
R7
R8 1-945000-035 CB6811
R9/R18 1-003215-002
R10
R11
3-2
Table 3-1. Parts List for Main Assemblies and Chassis (Cont.)
Ref. Dor Singer Mfr. Mfr.
Desig. escripsion Part No. Code No. Part No.
R12/R21 Resistor, variable assembly, 1-003215-001
(R12) resistor, variable, composition,
5 kilohm, +30%, 1/2 W
Resistor, variable, composition,
1.0 kilohm, +20%, 1/2 W (part of SS)
Resistor, fixed, composition,
1.8 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
4.7 kilohm, 1109, 1/4 W
Resistor, fixed, composition,
680 ohm, *10%, 1/4 W
Not used
R13
R14 1-945000-040 CB1821
R15 1-945000-045 CB4721
R16
1-945000-035 CB6811
R17
R18
Resistor, variable, composition,
1.0 megohm, +30%, 1/4 W (part of R9/R18)
Resistor, fixed, composition,
470 kilohm, *10%, 1/4 W
Resistor, fixed, composition,
560 kilohm, 2595, 1/2 W
Resistor, variable, composition,
500 kilohm, +30%, 1/4 W (part of R12/R21)
Resistor, fixed, composition,
4.7 megohm, +5%, 2 У
Not used
Not used
Not used
Not used
Not used
Not used
Not used
R19 1-945000-069 CB4741
R20
1-945001-228 EB5645
R21
R22 1-945003-081 HB4755
R23
R24
R25
R26
R27
R28
R29
R30
Resistor, fixed, composition,
6.8 kilohm, +5%, 1/4 W
Resistor, fixed, composition,
68 kilohm, +5%, 1/4 W
Resistor, variable, composition,
200 ohm, 21095, 1/4 W (part of S4/R32)
Resistor, fixed, composition,
10 kilohm, *10%, 1/4 W
Switch/Variable resistor assembly,
(S1) switch, rotary, 2 poles, 2 positions
1-945000-182 CB6825
R31
1-945000-206 CB6835
R32
R33 1-945000-049 CB1031
SI/R7 1-003210-001
S2/S6 Switch/Concentric assembly, 1-403529-001
(S2) switch, rotary, 1 pole, 3 positions
S3/R11 Switch/Variable resistor assembly,
(S3) switch, rotary, 1 pole, 2 positions
1-003210-002
S4/R32 Switch/Variable resistor assembly,
(S4) switch, rotary, 3 poles, 3 positions
1-403707-001
S5/R13 Switch/Variable resistor assembly,
(S5) switch, rotary, 1 pole, 2 positions
2-402816-001
Table 3-1. Parts List for Main Assemblies and Chassis (Cont.)
Deda Singer Mfr. Mfr.
ESCTID HON Part No. Code No. Part No.
Switch, rotary,
1 pole, 2 positions (part of 52/56)
Ref.
Desig.
S6
V] 1-917000-001
1-950003-001
D7-166J
30232
Electron tube, cathode ray
Socket, CRT
3-4
Table 3-2. Parts List for IF Assembly, A1
Capacitor, fixed, mica,
1200 pF, 2595, 100 V dc
Capacitor, fixed, mica,
1200 pF, +5%, 100 V dc
Capacitor, fixed, mica,
150 pF, £526, 500 V dc
Capacitor, fixed, plastic,
0.1 uF, 22095, 250 V dc
Capacitor, fixed, mica,
150 pF, £526, 500 V dc
Not used
Capacitor, fixed, mica,
5 pF, +10%, 500 V dc
Capacitor, fixed, mica,
150 pF, 2595, 500 V dc
Capacitor, fixed, mica,
1200 pF, £575, 100 V dc
Capacitor, fixed, plastic,
0.1 uF, 22095, 250 V dc
Capacitor, fixed, plastic,
0.047 uF, +20%, 250 V dc
Capacitor, fixed, mica,
150 pF, +5%, 500 V dc
Capacitor, fixed, mica,
47 pF, £596, 500 V dc
Capacitor, fixed, plastic,
0.1 uF, +20%, 250 V dc
Capacitor, fixed, plastic,
0.1 uF, 22095, 250 V dc
Capacitor, fixed, electrolytic,
25 uF, +75% —10%, 25 V dc
Capacitor, fixed, ceramic,
Capacitor, fixed, ceramic,
Not used
Not used
Capacitor, fixed, plastic,
150 uF, 12096, 250 V dc
Capacitor, fixed, mica,
150 pF, +5%, 500 V dc
Capacitor, fixed, plastic,
0.01 uF, +20%, 250 V dc
Capacitor, fixed, plastic,
0.01 uF, +20%, 250 V dc
Capacitor, fixed, plastic,
0.1 uF, 22095, 250 V dc
Capacitor, fixed, electrolytic,
25 uF, +75% —10%, 25 V dc
Ref. реж Singer Mfr. Mfr.
0.005 uF, +80% —20%, 500 V dc
0.001 uF, +100% —0%, 500 V dc
1-900003-057 DM15F122J
1-900003-057 DM15F122J
1-900003-034 DMISF151J
1-900001-013 C280AE,0.1uF
1-900003-034 DM15J151J
1-900003-004 СМ15С050К
1-900003-034 DMISF151J
1-900003-057 DM15F122J
1-900001-013 C280AE,0.1uF
1-900001-009 C280AE,0.047uF
1-900003-034 DM1SF151J
1-900003-02 1 DM15E470J
1-900001-013 C280AE,0.1uF
1-900001-013 C280AE,0.1uF
1-900039-001 984-2203
1-90001 2-004 801Z5U502Z
1-900012-002 861Z5U102P
1-900001-001 C280AE,0.01uF
1-900002-034 DM1SF151J
1-900001-001 C280AE,0.01uF
1-900001-001 C280AE,0.01uF
1-900001-013 C280AE,0.1uF
1-900039-001 984-2203
Table 3-2. Parts List for IF Assembly, A1 (Cont.)
pe enta Singer Mfr. Mfr.
escription Part No. Code No. Part No.
Capacitor, fixed, plastic, 1-900001-013 C280AE,0.1uF
0.1 uF, +20%, 250 V dc
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
N
Not used
Not used
Not used
Not used
Not used
Not used
Capacitor, fixed, plastic,
0.1 uF, +20%, 250 V de
Capacitor, fixed, mica,
100 pF, +5%, 500 V dc
Capacitor, fixed, electrolytic,
25 uF, +75% —10%, 25 У dc
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Capacitor, fixed, plastic,
0.01 uF, +20%, 250 V dc
Capacitor, fixed, plastic,
0.01 uF, 12092, 250 V dc
ot used
1-900001-013 C280AE,0.1uF
1-900003-030 DMISF101J
1-900039-001 984-2203
1-900001-001 C280AE,0.01uF
1-900001-001 C280AE,0.01uF
Table 3-2. Parts List for IF Assembly, A1 (Cont.)
Ref. ен Singer Mfr. Mfr.
Desig. escription Part No. Code No. Part No.
Capacitor, fixed, mica,
100 pF, +5%, 500 V dc
Capacitor, fixed, electrolytic,
25 uF, +75% —10%, 25 V dc
Capacitor, fixed, electrolytic,
200 uF, +75% —10%, 15 V dc
Capacitor, fixed, electrolytic,
25 uF, +75% —10%, 25 V dc
Capacitor, fixed, electrolytic,
2 uF, +75 —10%, 25 V dc
Capacitor, fixed, electrolytic,
25 uF, +75% —10%, 25 V dc
Capacitor, fixed, electrolytic,
25 uF, +75% - 1095, 25 У dc
Capacitor, fixed, electrolytic,
25 uF, +75% —10%, 25 V dc
Capacitor, fixed, electrolytic,
25 uF, 77599 -10%, 25 V dc
Not used
Capacitor, fixed, electrolytic,
25 uF, +75% --10%, 25 V dc
Not used
Diode, silicon,
۱۷۲275 V, If=10 mA
Diode, silicon,
Vr=75 V, If=10 mA
Diode, germanium,
Vr=30 У, If=100 mA
Diode, germanium,
Vr=30 V, If=100 mA
Inductor, variable,
30 uH to 60 uH
Inductor, variable,
30 uH to 60 uH
Inductor, variable,
30 uH to 60 uH
Inductor, variable,
30 uH to 60 uH
Not used
Inductor, variable,
30 uH to 60 uH
Transistor, silicon, NPN
Transistor, silicon, NPN
Transistor, silicon, NPN
Transistor, silicon, NPN
Transistor, silicon, NPN
Transistor, silicon, NPN
1-900003-030
1-900039-001
1-900039-002
1-900039-001
1-900023-016
1-900039-001
1-900039-001
1-900039-001
1-900039-001
1-900039-001
1-913007-001
1-913007-001
1-913005-001
1-913005-001
1-906006-003
1-906006-003
1-906006-003
1-906006-003
1-906006-003
1-958000-001
1-958000-001
1-958000-001
1-958000-001
1-958000-001
1-958000-001
DMISF101J
984-2203
984-1733
984-2203
TE1201
984-2203
984-2203
984-2203
984-2203
984-2203
1N4148
134148
11273
11273
2N3904-5
2N3904-5
2N3904-5
2N3904-5
2N3904-5
2N3904-5
Table 3-2. Parts List for IF Assembly, A1 (Cont.)
Бекеттің Singer Mfr. Mfr.
escription Part No. Code No. Part No.
Transistor, silicon, NPN 1-958000-001 2N3904-5
1-958000-001 2N3904-5
1-958000-001 2N3904-5
1-958000-001 2N3904-5
1-958000-001 2N3904-5
1-958031-003 E102
1-958000-002 2N3906-5
1-958000-001 2N3904-5
1-958000-001 2N3904-5
1-958000-001 2N3904-5
1-958000-002 2N3906-5
1-958044-003 MFE2006
1-958000-001 2N3904-5
1-958000-001 2N3904-5
1-945000-022 CB5601
Transistor, silicon, NPN
Transistor, silicon, NPN
Transistor, silicon, NPN
Transistor, silicon, NPN
Transistor, N-channel, J-FET
Transistor, silicon, PNP
Transistor, silicon, NPN
Transistor, silicon, NPN
Transistor, silicon, NPN
Transistor, silicon, PNP
Transistor, N-channel, J-FET
Transistor, silicon, NPN
Transistor, silicon, NPN
Resistor, fixed, composition,
56 ohm, +10%, 1/4 W
Resistor, fixed, composition,
6.8 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
2.2 kilohm, 21095, 1/4 W
Resistor, fixed, composition,
470 ohm, +10%, 1/4 W
Resistor, fixed, composition,
100 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
470 ohm, +10%, 1/4 W
Resistor, fixed, composition,
470 ohm, 11090, 1/4 W
Resistor, fixed, composition,
100 kilohm, 21095, 1/4 W
Resistor, fixed, composition,
1.0 kilohm, 11092, 1/4 W
Resistor, fixed, composition,
470 ohm, +10%, 1/4 W
Resistor, fixed, composition, selected,
9.1 kilohm nominal, +5%, 1/4 W
Resistor, fixed, composition,
10 ohm, +10%, 1/4 W
Resistor, fixed, composition,
12 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
1.0 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
1.0 kilohm, +10%, 1/4 W
Resistor, variable, composition,
1.0 kilohm, +30%, 1/4 W
1-945000-047 CB6831
1-945000-041 CB2221
1-945000-033 CB4711
1-945000-061 CB1041
1-945000-033 CB4711
1-945000-033 CB4711
1-945000-061 CB1041
1-945000-037 CB1021
1-945000-033 CB4711
1-945000-185 CB9125
1-945000-013 CB1001
1-945000-050 CB1231
1-945000-037 CB1021
1-945000-037 CB1021
1-945007-004 X201
Table 3-2. Parts List for IF Assembly, A1 (Cont.)
Ref. рено Ѕіпрег Mfr. Mfr.
Desig. p Part No. Code No. Part No.
Resistor, fixed, composition, selected, 1-945000-176 CB3925 |
3.9 kilohm nominal, +5%, 1/4 W
Not used
Not used
Not used
Resistor, fixed, composition, 1-945000-030
270 ohm, +10%, 1/4 W
Resistor, fixed, composition,
120 ohm, +10%, 1/4 W
Resistor, fixed, composition,
10 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
3.3 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
10 ohm, 11092, 1/4 W
Resistor, fixed, composition,
100 ohm, 11092, 1/4 W
Resistor, variable, wirewound,
1.0 kilohm, +10%, 1/4 W
Resistor, variable, wirewound,
1.0 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
100 ohm, +10%, 1/4 W
Resistor, fixed, composition,
2.2 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
330 ohm, +10%, 1/4 W
Resistor, fixed, composition,
330 ohm, +10%, 1/4 W
Resistor, fixed, composition,
2.2 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
1.0 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
2.7 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
10 kilohm, +10%, 1/4 W
Not used
Not used
Not used
Not used
Resistor, fixed, composition,
10 kilohm, 11090, 1/4 W
Resistor, fixed, composition,
2.7 kilohm, 41092, 1/4
Resistor, fixed, composition,
10 megohm, +10%, 1/4 W
CB2711
1-945000-026 CB1211
1-945000-049 CB1031
1-945000-043 CB3321
1-945000-013 CB1001
1-945000-025 CB1011
1-945056-007 3257W1-102
1-945056-007 3257W1-102
1-945000-025 CB1011
1-945000-041 CB2221
1-945000-031 CB3311
1-945000-031 CB3311
1-945000-041 CB2221
1-945000-037 CB1021
1-945000-042 CB2721
1-945000-049 CB1031
1-945000-049 CB1031
1-945000-042 CB2721
1-045000-085 CB1061
3-9
Table 3-2. Parts List for IF Assembly, A1 (Cont.)
Ref. DE Simon Singer Mfr. Mfr.
Desig. оро Part No. Code No. Part No.
Resistor, fixed, composition, 1-945000-033 CB4711
470 ohm, +10%, 1/4 W
Resistor, fixed, composition,
470 ohm, +10%, 1/4 W
Resistor, fixed, composition,
470 ohm, +10%, 1/4 W
Resistor, fixed, composition,
470 ohm, 21095, 1/4 W
Resistor, fixed, composition,
10 ohm, +10%, 1/4 W
Not used
Not used
Resistor, fixed, composition, selected,
15 kilohm nominal, 21095, 1/4 W
Resistor, variable, composition,
5 kilohm, 23095, 1/4 W
Resistor, fixed, composition,
15 kilohm, 11092, 1/4 W
Resistor, fixed, composition,
1.0 kilohm, +10%, 1/4 W
Resistor, fixed, composition, selected,
150 ohm nominal, +10%, 1/4 W
Resistor, variable, composition,
100 ohm, *30%, 1/4 W
Resistor, fixed, composition,
39 ohm, £596, 1/4 W
Thermistor,
300 ohm, +2%
Resistor, fixed, composition,
2.2 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
2.2 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
47 kilohm, 11090, 1/4 W
Resistor, fixed, composition,
56 ohm, +10%, 1/4 W
Resistor, fixed, composition,
2.2 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
680 ohm, 11092, 1/4 W
Resistor, fixed, composition,
180 ohm, +10%, 1/4 W
Not used
Resistor, fixed, composition,
820 ohm, *5%, 1/4 W
Resistor, fixed, composition,
2.4 kilohm, £596, 1/4 W
1-945000-033 CB4711
1-945000-033 CB4711
1-945000-033 CB4711
1-945000-013 CB1001
1-945000-051
CB1531
1-945007-006 X201
1-945000-051 CB1531
1-945000-037 CB1021
1-945000-027 CB1511
1-945007-001 X201
1-945000-128 CB3905
1-945070-001 C20
1-945000-041 CB2221
1-945000-041 CB2221
1-945000-057 CB4721
1-945000-022 CB5601
1-945000-041 CB2221
1-945000-035 CB6811
1-945000-028 CB1811
1-945000-160 CB8215
1-945000-171 CB2425
3-10
Table 3-2. Parts List for IF Assembly, A1 (Cont.)
Ref. Dome Singer Mfr. Mfr.
Desig. ерии Part No. Code No. Part No.
Resistor, fixed, composition, 1-945000-160 CB8215
820 ohm, +5%, 1/4 W
Resistor, fixed, composition,
100 ohm, +5%, 1/4 W
Resistor, fixed, composition,
10 ohm, +10%, 1/4 W
Resistor, fixed, composition,
6.2 kilohm, 11090, 1/4 W
Resistor, fixed, composition,
330 ohm, +10%, 1/4 W
Resistor, fixed, composition,
560 ohm, 21095, 1/4 W
Not used
Not used
Resistor, fixed, composition,
33 ohm, 21095, 1/4 W
Resistor, fixed, composition,
1.5 kilohm, +5%, 1/4 W
Integrated circuit,
FM detector and limiter
1-945000-138 CB1015
1-945000-013 CB1001
1-945000-181 CB6221
1-945000-031 CB3311
1-945000-034 CB5611
1-945000-019
CB3301
1-945000-166 CB1525
1-926031-001 ULN2111A
3-11
Table 3-3. Parts List for High Voltage Power Supply Assembly, A2
Capacitor, fixed, plastic,
0.047 uF, +20%, 250 V dc
Capacitor, fixed, electrolytic,
200 uF, +75% --10%, 15 V dc
Capacitor, fixed, plastic,
0.47 uF, 22095, 250 V dc
Capacitor, fixed, ceramic,
0.02 uF, +20%, 1000 V dc
Capacitor, fixed, ceramic,
0.02 uF, +20%, 1000 V dc
Capacitor, fixed, ceramic,
0.02 uF, +20%, 1000 V dc
Capacitor, fixed, electrolytic,
4 uF, +100% —10%, 350 V dc
Capacitor, fixed, electrolytic,
4 uF, +100% —10%, 350 V dc
Capacitor, fixed, electrolytic,
25 uF, +75% —10%, 25 V dc
Capacitor, fixed, electrolytic,
25 uF, +75% —10%, 25 V de
Capacitor, fixed, plastic,
0.1 uF, +10%, 250 V dc
Capacitor, fixed, ceramic,
0.02 uF, +20%, 1000 V dc
Diode, silicon,
Vr=2000 У, If=50 mA
Diode, silicon,
Vr=2000 V, If=50 mA
Diode, silicon,
۷۲2400 V, If=1 A
Diode, silicon,
Vr=400 V, If=1 A
Diode, silicon,
Уге50 V, If=1 A
Diode, silicon,
Vr=50 V, If=1 A
Diode, silicon, zener,
15 V, 210955, 1 W
Inductor, fixed,
20 uH minimum
Resistor, fixed, composition,
68 ohm, +10%, 1/4 W
Resistor, fixed, composition,
680 ohm, +10%, 1/4 W
Resistor, fixed, composition,
10 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
100 ohm, *10%, 1/4 W
Transformer, power
Ref. Desedoŭ Singer Mfr. Mfr.
Desig. ondoj Part No. Code No. Part No.
1-900001-009 C280AE,0.047uF |
1-900039-002 984-1733
1-900001-021 C280AE,0.47uF
1-900012-012 SGA520
1-900012-012 SGAS20
1-900012-012 5GA520
1-900011-001 BR4-350
1-900011-001 BR4-350
1-900039-004 984-1653
1-900039-004 984-1653
1-900001-113 C280AE,0.1uF
1-900012-012 5GA520
1-913087-001 VG2X
1-913087-001 VG2X
1-913088-002 1N4936
1-913088-002 1N4936
1-913088-001 1N4933
1-913088-001 1N4933
1-913004-017 MZ1000-17
1-003213-001
1-945000-023 CB6801
1-945000-035 CB6811
1-945000-049 CB1031
1-945000-025 CB1011
1-003206-001
Table 3-4. Parts List for Vertical Amplifier Assembly, A3
Ref. Dee Singer Mfr. Mfr.
Desig. езеп Рагї Мо. Code No. Part No.
Capacitor, fixed, electrolytic, 1-900039-001 984-2203
25 uF, +75% --10%, 25 V dc
Capacitor, fixed, plastic,
0.01 uF, +20%, 250 V dc
Capacitor, fixed, electrolytic,
25 uF, +75% 1096, 25 V de
Capacitor, fixed, ceramic,
0.001 uF, +100% --0%, 500 V dc
Capacitor, fixed, plastic,
0.1 uF, +10%, 400 V dc
Capacitor, fixed, ceramic,
0.001 uF, +100% —0%, 500 V dc
Capacitor, fixed, electrolytic,
100 uF, +75% --10%, 25 V dc
Not used
1-900001-001 C280AE,0.01uF
1-900039-001 984-2203
1-900012-002 861Z50102P
1-900005-115 PVC401
1-900012-002 861Z50102P
1-900039-004 984-1653
Capacitor, fixed, electrolytic,
1.0 uF, +20%, 35 V dc
Not used
1-900057-146
1500105 А2
Capacitor, fixed, electrolytic,
25 uF, +75% --10%, 25 V dc
Not used
Not used
1-900039-001 984-2203
Diode, silicon
Vr=75 V, If=10 mA
Transistor, N-channel, J-FET
Transistor, N-channel, J-FET
Transistor, silicon, NPN
1-913007-001 1N4148
1-958002-002
1-958002-002
1-958004-001
1-958000-001
1-958000-001
1-945000-013
2N5458
2N5458
40327
2N3904-5
2N3904-5
CB1001
Transistor, silicon, NPN
Transistor, silicon, NPN
Resistor, fixed, composition,
10 ohm, 11099, 1/4 W
Resistor, fixed, composition,
10 megohm, 11096, 1/4 W
Resistor, fixed, composition,
100 ohm, +10%, 1/4 W
Resistor, fixed, composition,
2.2 megohm, +10%, 1/4 W
Resistor, variable, composition,
100 kilohm, 13090, 1/4 W
Resistor, fixed, composition,
1.5 kilohm, 21065, 1/4 W
Resistor, fixed, composition,
1.0 kilohm, +10% 1/4 W
Resistor, fixed, composition,
1.0 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
470 ohm, 11092, 1/4 W
1-945000-085 CB1061
1-945000-025 CB1011
1-945000-077 CB2251
1-945010-010 U201
1-945000-039 CB1521
1-945000-037 CB1021
1-945000-037 CB1021
1-945000-033 CB4711
3-13
Table 3-4. Parts List for Vertical Amplifier Assembly, A3 (Cont.)
Resistor, fixed, composition,
1 megohm, +10%, 1/4 W
Resistor, fixed, composition, selected,
10 ohm nominal, * 10%, 1/4 W
Resistor, variable, composition,
5 kilohm, 13092, 1/4 W
Resistor, fixed, composition,
47 kilohm, +10%, 1 W
Resistor, fixed, composition,
1.0 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
47 kilohms, +10%, 1 W
Resistor, fixed, composition,
1 megohm, +10%, 1/4 W
Resistor, fixed, composition,
820 ohm, +10%, 1/4 W
Resistor, fixed, composition,
10 ohm, +10%, 1/4 W
Resistor, fixed, composition, selected
1.5 kilohm nominal, 11095, 1/4 W
Resistor, fixed, composition,
6.8 kilohm, 52595, 1/4 W
Resistor, fixed, composition,
1.0 kilohm, £596, 1/4 W
Resistor, fixed, composition,
150 ohm, +5%, ۷
Resistor, fixed, composition,
150 ohm, 2595, 1/4 W
Resistor, fixed, composition,
1.0 kilohm, +5%, 1/4 W
Resistor, fixed, composition,
10 ohm, +10%, 1/4 W
Resistor, fixed, composition,
100 ohm, *10%, 1/4 W
Resistor, fixed, composition,
1 megohm, 21095, 1/4 W
Resistor, fixed, composition,
22 kilohm, +10%, 1/4 W
Resistor, variable, composition,
10 kilohm, +30%, 1/4 W
Resistor, fixed, composition,
180 ohms, +10%, 1/4 W
Integrated circuit,
differential/cascode amplifier
>
Integrated circuit,
amplifier
3-14
Ref. er Singer
Mfr. Mfr.
Code No. Part No.
01121 CB1051
1-945000-073
1-945000-013
CB1001
1-945010-006
U201
1-945002-057
GB4731
1-945000-038 CB1021
1-945002-057 GB4731
1-945000-073
CB1051
1-945000-036
CB8211
1-945000-013
CB1001
1-945000-039
CB1521
1-945000-182 CB6825
1-945000-162 CB1025
1-945000-142 CB1515
1-945000-142
СВІ515
1-945000-162
СВІ025
1-945000-013
CB1001
1-945000-025
CB1011
1-945000-073
CB1051
1-945000-053
CB2231
1-945010-007
U201
1-945000-028
CB1811
1-926005-001 CA3028A
1-004763-001
Table 3-5. Parts List for Horizontal Amplifier Assembly, A4
Capacitor, fixed, plastic,
0.0022 uF, +10%, 500 V dc
Capacitor, fixed, plastic,
0.022 uF, ۶1096, 200 V dc
Capacitor, fixed, plastic,
0.1 uF, +20%, 250 V dc
Not used
Capacitor, fixed, electrolytic,
25 uF, +75% —10%, 25 V dc
Capacitor, fixed, electrolytic,
25 uF, +75% —10%, 25 V dc
Transistor, silicon, PNP
Transistor, silicon, PNP
Transistor, silicon, NPN
Transistor, N-channel, J-FET
Transistor, silicon, NPN
Transistor, silicon, NPN
Resistor, fixed, composition,
2.2 kilohm, 11090, 1/4 W
Resistor, fixed, composition,
15 kilohm, +10%, 1/4 W
Resistor, variable, composition,
100 kilohm, 13092, 1/4 W
Resistor, fixed, composition,
1.2 kilohm, +10%, 1/4 W
Resistor, variable, composition,
10 kilohm, +30%, 1/4 W
Resistor, fixed, composition,
10 megohm, +10%, 1/4 W
Not used
Not used
Resistor, fixed, composition,
22 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
1.0 kilohm, 21065, 1/4 W
Resistor, fixed, composition,
47 kilohm, +10%, 1 W
Resistor, fixed, composition,
5.6 kilohm, 11092, 1/4 W
Resistor, fixed, composition,
100 ohm, +10%, 1/4 W
Resistor, variable, composition,
1.0 kilohm, +30%, 1/4 W
Resistor, fixed, composition,
47 kilohm, +10%, 1 W
Resistor, fixed, composition,
5.6 kilohm, 11090, 1/4 W
Ref. D Singer Mfr. Mfr.
Desig. eserine Part No. Code No. Part No.
1-900005-101 PVC6222
1-900005-004 PVC2122
1-900001-013 C280AE,0.1uF
1-900039-001 984-2203
1-900039-001 984-2203
1-958000-002
1-958000-002
1-958000-001
1-958002-002
1-958004-001
1-958004-001
1-945000-041
2N3906-5
2N3906-5
2N3904-5
2N5458
40327
40327
CB2221
1-945000-051 | CB1531
1-945010-010 U201
1-945000-038 CB1221
1-945010-007 U201
1-945000-085 CB1061
1-945000-053
СВ2231
1-945000-037 СВ1021
1-945002-057 GB4731
1-945000-046 CB5621
1-945000-025 CB1011
1-945010-004 U201
1-945002-057 GB473]
1-945000-046 CB5621
3-15
Table 3-Б. Parts List for Horizontal Amplifier Assembly, A4 (Cont.)
Ref. Docs Singer Mfr. Mfr.
Desig. ESP HON Part No. Code No. Part No.
R216 Resistor, fixed, composition, 1-945000-044 01121 CB3921
3.9 kilohm, +10%, 1/4 W
Resistor, variable, composition, 1-945010-013 71450 U201
I megohm, 23095, 1/4 W
3-16
Table 3-6. Code List of Manufacturers
The following code numbers are from the Federal Supply Code for Manufacturers Cataloging Handbook H4-2.
Manufacturer
Allen-Bradley Co.
Amphenol-Bunker Ramo Corp., Connector Div.
RCA Semiconductor and Materials Div.
Transitron Electronic Corp.
Motorola Inc.
Kings Electronics Co.
Dickson Electronics Corp.
Cornell-Dubilier Elect. Corp.
Corning Glass Works, Electronic Components Dept.
Siliconix, Inc.
G. E. Corp.
Telefunken Sales Corp.
Mura Corp.
Sprague Electric Co.
CTS Corp.
Electro Motive Mfg. Co.
General Instrument Corp.
Erie Technological Products Inc.
Amperex Electronics Co.
Bourns Inc.
Switchcraft Inc.
Singer Instrumentation
Mallory Capacitor Co.
Address
Milwaukee, Wis.
Broadview, Ill.
Sommerville, N.J.
Wakefield, Mass.
Phoenix, Ariz.
Pasadena, Calif.
Scottsdale, Ariz.
Newark, N J.
Corning, N.Y.
Santa Clara, Calif.
Schenectady, N.Y.
Long Island, N.Y.
Great Neck, N.Y.
North Adams, Mass.
Elkhart, Ind.
Willimantic, Conn.
Newark, N J.
Erie, Pa.
Hicksville, N.Y.
Riverside, Calif.
Chicago, Ill.
Los Angeles, Calif.
Indianapolis, Ind.
3-17/3-18
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SCHEMATIC DIAGRAMS
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APPENDIX A
BACKDATING INFORMATION
For MODEL ODM-1
Serial Numbers 101 thru Instrument Serial Numbers Suffixed with 04295.
This manual refers directly to instrument serial numbers suffixed with 04296 and above. The following information is
provided to adapt this manual for serial numbers 101 thru instrument serial numbers suffixed with 04295. Perform the
following changes to the manual down to the effective serial number of your instrument.
Effective serial number: 101 thru serial numbers suffixed with 04295
Page 3-12: Table 3-3. Parts List For High Voltage Power Supply Assembly, A2
Change CR401, CR402, to:
Diode, silicon 1-913043-002 04713
Vr=1050 У, If=250 mA
Change CR403, CR404, to:
Diode, silicon 1-913001-004 04713
Vr=400 У, If=1A
Change CR405, CR406, to:
Diode, silicon 1-913001-002 04713
Vr=100 V, If=1A
Page 4-3/4-4: Figure 4-1. Schematic Diagram, Model ODM-1
Change CR401, CR402 to: MR991A
Change CR403, CR404 to: 1N4004
Change CR405, CR406 to: 1N4002
Effective serial number: 101 thru serial numbers suffixed with 04288
Page 3-9: Table 3-2. Parts List For IF Assembly, A1
Change R517 to:
Resistor, fixed, composition, selected, 1-945000-178 01121
4.7 kilohm nominal, £595, 1/4 W
Page 4-3/4-4: Figure 4-1. Schematic Diagram, Model ODM-1
Change R517 to: 4.7 К +5%
Effective serial numbers: 101 thru instrument serial numbers suffixed with 04226
Pages 3-10 and 3-11: Table 3-2. Parts List for IF Assembly, A1 (Cont.)
Change R577 to:
Resistor, fixed, composition, 1-945000-036 01121
820 ohm, +10%, 1/4 W
Change R578 to:
Resistor, fixed, composition, 1-945000-049 01121
10 kilohm, +10%, 1/4 W
Change R579 to:
Resistor, fixed, composition, 1-945000-033 01121
470 ohm, +10%, 1/4 W
Change R580 to:
Resistor, fixed, composition, 1-945000-025 01121
100 ohm, +10%, 1/4 W
Change R582 to:
Resistor, fixed, composition, 1-945000-050 01121
12 kilohm, 21095, 1/4 W
Page 4-3/4-4: Figure 4-1. Schematic Diagram, Model ODM-1
Change R577 to: 820
MR991A
1N4004
1N4002
CB4725
CB8211
CB1031
CB4711
CB1011
CB1231
A-1
Change R578 to: 10 K
Change R579 to: 470
Change R580 to: 100
Change R582 to: 12 K
Effective serial number: 101 thru serial numbers suffixed with 04134
Page 3-10: Table 3-2. Parts List For IF Assembly, A1
Change R567 to:
Resistor, fixed, composition, 1-945000-022 01121 CB5601
56 ohm, +10%, 1/4 W
Change R572 to:
Resistor, fixed, composition, 1-945000-025 01121 CB1011
100 ohm, +10%, 1/4 W
Change R575 to:
Resistor, fixed, composition, 1-945000-030 01121 CB2711
270 ohm, +10%, 1/4 W
Page 4-3/4-4: Figure 4-1. Schematic Diagram, Model ODM-1
Change R567 to: 56
Change R572 to: 100
Change R575 to: 270
Effective serial numbers: 101 thru 1335
Page 1-1: Paragraph 1.3.3 Vertical Deflection Circuitry
End of first sentence, Delete: “DC BAL potentiometer, R32." and replace it with “potentiometer, AIRS16.”
Page 1-3/1-4: Figure 1-1. Detailed Block Diagram, Model ODM-1
Delete: R32, DC BAL, C6, 0.01 and the +9 V reference.
Add: A line from A1E507 to the top of R2.
Page 2-7: Paragraph 2.5.6 Offset and Vertical Amplifier Gain Adjustment
Step a.: Change the word “controls” to “control” and delete the words “and DC BAL”.
Page 3-2: Table 3-1. Parts List for Main Assemblies and Chassis
Delete:
C6 Capacitor, fixed, plastic, 1-900001-001 73445 C280AE,0.01uF
0.01 uF, +20%, 250 V dc
Page 3-3: Table 3-1. Parts List for Main Assemblies and Chassis (Cont.)
Delete:
R32 Resistor, variable, composition,
200 ohms, +10%, (part of S4/R32)
R33 Resistor, fixed, composition, 1-945000-049 01121 CB1031
10 kilohm, +10%, 1/4 W
Change S4/R32 from:
Switch/variable resistor assembly 1-403707-001 88869
(S4) Switch, rotary, 3 poles, 3 positions
To:
S4 Switch, rotary, 3 polies, 3 positions 1-003214-002 88869
Page 4-3/4-4: Figure 4-1. Schematic Diagram, Model ODM-1
Delete: Figure 4-1 and replace with the attached Figure 4-1.
A-2
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NOTES: UNLESS OTHERWISE SPECIFIED
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ALL RESISTORS ARE IN OHMS, 110%, 1/aw
ALL TRANSISTORS ARE 2N3904
ALL CAPACITORS ARE IN MICROFARADS
W DENOTES FACTORY SELECTED VALUE
VOLTAGES REFERENCED TO CHASSIS GROUND WHILE
MEASURING A SIGNAL DEVIATED 5кна АТ IKH (OPERATE).
SAME AS [5] EXCEPT UNDER (OVERLOAD) CONDITION.
VOLTAGES WITHOUT TOLERANCE ARE FOR REFERENCE ONLY.
VOLTAGES WITHOUT WAVEFORMS ARE D£.
RMS VOLTAGE MEASURED WITH VOM BETWEEN PIN E415 AND 6۰
CAUTION: THESE PINS ARE AT A HIGH DC POTENTIAL.
15у zio
£105 я
(For use with serial numbers 601 thru 1335)
Figure 4-1. Schematic Diagram,
Model ODM-1
Dwg. No. 9501267-001
A-3/A-4
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Effective serial numbers: 101 thru 1235
Page 1-1: Paragraph 1.3.3 Vertical Deflection Circuitry
Second paragraph, Delete: The entire last sentence.
Page 1-3/1-4: Figure 1-1. Detailed Block Diagram, Model ODM-1
Delete: S6, VERT COUPLING, and add S1B, VERT IN, as illustrated below.
Page 2-7: Paragraph 2.4.7 Evaluation of Deviation Indication Accuracy
a.
Delete: Steps a. thru l. and replace with the following:
Set the Model ODM-1 controls as follows:
VERT IN EXT
VERT GAIN Fully cw
VERT CENTER ` Trace on O center line
Connect the ac voltmeter and the audio
oscillator to the VERT IN receptacle of the
Model ODM-1.
Set the audio oscillator frequency to 1.0
kHz and output level for full-scale deflection
on the CRT.
The ас voltmeter should indicate 25 mV rms
+10% (22.5 mV to 27.5 mV rms).
If the level required for full-scale deflection
is less than 22.5 mV rms, increase the value
of AIRS11 from 9.1 kilohms to 10 kilohms.
Disconnect the audio oscillator and repeat
Steps 2.4.6-a. thru 2.4.6-d.
If the level required for full-scale deflection
is more than 27.5 mV rms, decrease the
value of AIR511 from 9.1 kilohms to 8.2
kilohms. Disconnect the audio oscillator and
repeat Steps 2.4.6-a. thru 2.4.6-d.
Page 3-2, Table 3-1. Parts List for Main Assemblies and Chassis
Change Cl to:
Capacitor, fixed, plastic, 1-900001-021 73445
0.47 uF, +20%, 250 V dc
Change C4 to:
Capacitor, fixed, plastic, 1-900001-001 73445
0.01 uF, +20%, 250 V dc
Change C5 to:
Capacitor, fixed, mica, 1-900003-030 72136
100 pF, +5%, 100 V dc
C280AE,0.47uF
C280AE,0.01uF
DM15
A-5
Page 3-3: Table 3-1. Parts List for Main Assemblies and Chassis (Cont.)
Delete:
R30 Resistor, fixed, composition, 1-945000-182 01121 CB6825
6.8 kilohm, +5%, 1/4 W
Delete:
R31 Resistor, fixed, composition, 1-945000-206 01121 CB6835
68 kilohm, +5%, 1/4 W
Change S2/S6 from:
Switch/Concentric assembly 1-403529-001 88869
(S2) Switch, rotary, 1 pole, 3 positions
To:
S2 Switch, rotary, 1 pole, 3 positions 1-003214-002 88869
Delete: S6 and all information
Page 3-5: Table 3-2. Parts List for IF Assembly, A1
Change C519 to:
Capacitor, fixed, plastic, 1-900001-003 73445 C280AE,0.1uF
0.1 uF, +20%, 250 V dc
Page 3-7: Table 3-2. Parts List for IF Assembly, Al (Cont.)
Change CR501 to:
Diode, silicon, zener, 4.7 V 1-913004-005 04713 JZ4.7B
Page 3-11: Table 3-2. Parts List for IF Assembly, A1 (Cont.)
Delete:
R588 Resistor, fixed, composition, 1-945000-166 01121 CB1525
1.5 kilohm, +5%, 1/4 W
Page 3-13: Table 3-4. Parts List for Vertical Amplifier Assembly, A3
Change CR101, CR102 to:
Diode, silicon 1-913007-001 24446 1N4148
Change R104 to:
Resistor, fixed, composition, 1-945000-073 01121 CB1051
1.0 megohm, +10%, 1/4 W
Change R106 to:
Resistor, fixed, composition, 1-945000-034 01121 CB5611
560 ohm, +10%, 1/4 W
Page 3-14: Table 3-4. Parts List for Vertical Amplifier Assembly, A3 (Cont.)
Delete:
R130 Resistor, fixed, composition, 1-945000-028 01121 CB1811
180 ohm, 21095, 1/4 W
Page 4-3/4-4: Figure 4-1. Schematic Diagram, Model ODM-1
Delete: Resistor R588, 1.5 К 1596, and replace it with a zener diode, CR501 17478 47 V, with the anode
side to R516
Add: A capacitor, C516 0.1, in parallel with CR501 and with the curved side to the diode anode.
Change R517 to: 4.7K*
Delete: Resistor R30, 6.8 K 15% and replace it with a capacitor, СІ 0.47, with the curved side to J1.
Delete: Resistor R31, 68K.
Delete: Resistor R130, 180, and replace with a diode, CR101, 1N4148, with the cathode to Q102.
Change R106 to 560.
Add: A diode, CR102, 1N4148, between R106 and Q102-S with the cathode to R106.
Change R104, to: 1M
A-6
Delete: Switch S6, VERT COUPLING, and add switch 518, VERT IN, as illustrated below:
VU
340 MV P-P
Add: Capacitor C5, 100 pF, between pins 9 and 10 of the CRT, with the curved side of the capacitor to pin 9.
Change E507 from: 0 V and 175 mV р-р +10% To: 0.15 V and 260 mV p-p +10%, respectively.
Effective serial numbers: 101 thru 1135
Page 3-12: Table 3-3. Parts List for High Voltage Power Supply Assembly, A2
Change C411 to:
Capacitor, fixed, ceramic, 1-90001 2-005
0.1 uF, +80% —20%, 500 V dc
Page 3-13: Table 3-4. Parts List for Vertical Amplifier Assembly, A3
Change C109 to:
Capacitor, fixed, electrolytic, 1-900115-003
1.0 uF, +20%, 50 V dc
N
Effective serial numbers: 101 thru 1000
Page 3-2: Table 3-1. Parts List for Main Assemblies and Chassis
Delete:
(55 Capacitor, fixed, mica, 1-900003-030
100 pF, +5%, 100 V dc
Page 4-3/4-4: Figure 4-1. Schematic Diagram, Model ODM-1
Between pins 9 and 10 of the CRT, Delete: C5, 100 pF
Effective serial numbers: 101 thru 600
Page 3-2: Table 3-1. Parts List for Main Assemblies and Chassis
Change A3 part number, to: 5-003204-005
Change C1 to:
Capacitor, fixed, plastic, 1-900001-013
0.1 uF, 12090, 250 V dc
Delete: C5, C6 and all information.
Change R6 to:
Resistor, fixed, composition, 1-945000-029
1 kilohm, 21095, 1/4 W
56289
12954
72136
73445
01121
41C92
DIROGSASOM
ОМІ5
C280AE,0.1uF
CB1021
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NOTES! UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS ARE IN OHMS, 102 „(аж
2.4.L TRANSISTORS ARE 2N3904
BALL CAPACITORS ARE IN MICROFARADS
4, Ж DENOTES FACTORY SELECTED VALUE
Effective Serial Numbers: 101 thru 600
Model ODM-1
Dwg. No. 5-501011-001(J)
gure 4-1. Schematic Diagram,
A-9/A-10
R106
R107
R108
R109
R110
R111
R112
R113
R114
R115
R116
R117
R118
R119
R120
R121
R122
R123
R124
Resistor, fixed, composition,
10 ohm, 21095, 1/4 W
Resistor, fixed, composition,
10 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
820 ohm, #10%, 1/4 W
Resistor, variable, composition,
1.0 kilohm, +30%, 1/4 W
Resistor, variable, composition,
1.0 kilohm, +30%, 1/4 W
Resistor, fixed, composition,
2.2 kilohm, *10%, 1/4 W
Resistor, variable, composition,
10 kilohm, *30%, 1/4 W
Resistor, fixed, composition,
10 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
3.3 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
1.0 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
22 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
470 ohm, *10%, 1/4 W
Resistor, fixed, composition,
1.0 megohm, +10%, 1/4 W
Resistor, fixed, composition,
47 kilohm, +10%, 1 W
Resistor, fixed, composition,
5.6 kilohm, +10%, 1/4 W
Resistor, fixed, composition,
47 ohm, +10%, 1/4 W
Resistor, variable, composition,
1.0 kilohm, +30%, 1/4 W
Resistor, fixed, composition,
47 kilohm, +10%, 1 W
Resistor, fixed, composition,
5.6 kilohm, +10%, 1/4 W
1-945000-013
1-945000-049
1-945000-036
1-945006-007
1-945005-007
1-945000-041
1-945006-015
1-945000-049
1-945000-043
1-945000-037
1-945000-053
1-945000-033
1-945000-073
1-945002-057
1-945000-046
1-945000-021
1-945005-007
1-945002-057
1-945000-046
01121
01121
01121
90201
90201
01121
90201
01121
01121
01121
01121
01121
01121
01121
01121
01121
90201
01121
01121
CB1001
CB1031
CB8211
MTC13L1
MTC13L4
CB2221
MTC14L1
CB1031
CB3321
CB1021
CB2231
CB4711
CB1051
GB4731
CB5621
CB4701
MTC13L4
GB4731
CB5621
ADDENDUM
for
Manual No. 1-500783-299
Model No. ODM-1
ERRATA
Cortect the following errors in the above manual:
Page 3-13: Table 3-4. Parts List for Vertical Amplifier Assembly, A3
Q103, Mfr. Part No., Was: 40327 Is: 40327-66031
Page 3-15: Table 3-5. Parts List for Horizontal Amplifier Assembly, A4
Q204, Q205, Mfr. Part No., Was: 40327 15: 40327-66031
Page 4-3/4-4: Figure 4-1. Schematic Diagram, Model ODM- 1
CR401, CR402, Was: MR991A Is: VG2X
CR403, CR404, Was: 1N4004 ls: 1N4936
CR405, CR406, Was: 1N4002 ls: 1N4933
Page 3-5: Table 3-2. Parts List for IF Assembly, A1
C522, Singer Part No., Was: 1-900002-034 :وا 1-900003-034
CLASS CODE
Ss THE SINGER COMPANY
LOS ANGELES OPERATION Model ODM-1 |- 50078 3-299
LOS ANGELES, CALIF. sheet 1.1
.
TITLE ADDENDUM DWG. NO.
Form No. 160 1M 4-75 D-H
RUNNING CHANGES
Perform the following changes to the manual up to the serial number effectivity of your
instrument:
Effective serial number: Serial numbers suffixed with 04350 and above
Page 3-13: Table 3-4. Parts List for Vertical Amplifier Assembly, A3
C104, Was: Capacitor, fixed, ceramic, 1-900012-002 72982 861250102P
0.001 u F, + 10096 - 096, 500 Мас
ls: Capacitor, fixed, ceramic, 1-900012-013 72982 871000X5F0202K
0.002 u F, + 1096, 500 Мас
Page 4-3/4-4: Figure 4-1. Schematic Diagram, Model ODM-1
C104, Was: .001 ls: 0.002
Effective serial number: Serial numbers suffixed with 05150 and above
Page 3-14: Table 3-4. Parts List for Vertical Amplifier Assembly, A3 (Cont.)
R123, Was: Resistor, fixed, composition, 1-945000- 142 01121 CB1515
150 ohm, = 596, 1/4W
ls: Resistor, fixed, composition, selected,
1-945000- 144 01121 CB1815
180 ohm nominal, + 596, 1/4W
Page 4-3/4-4: Figure 4-1. Schematic Diagram, Model ODM-1
R123, Was: 150 + 596 Is: 180 + 5%
Effective serial number: Serial numbers suffixed with 05279 and above
Pages 3-5 and 3-7: Table 3-2. Parts List for IF Assembly, A1
C522, Was: Capacitor, fixed, mica, 1-900003-034 72136 DM15F151J
150 pF, +5%, 500 V de
Is: Capacitor, fixed, mica, 1-900003-038 72136 DMI5F221J
220 pF, 45%, 500 V de | {
Add: C574 Capacitor, fixed, mica, 1-900003-047 72136 DMI5F471J
470 pF, 2596, 500 М dc
Page 4-3/4-4: Figure 4-1. Schematic Diagram, Model ODM-1
Was: C522 150 pF ls: C574 470 pF
Add: A capacitor, C522, 220 pF, from the junction of L506 and C524 to C574, with
the curved side to C574
Add: A coaxial cable from the junction of C522 and C574, with the shield leed to
P1-8 and the center conductor to P1-7
REVISED
CLASS CODE
THE SINGER COMPANY TITLE ADDENDUM DWG. NO.
LOS ANGELES OPERATION Model ODM- 1 |- 500783-29
APPROVED
LOS ANGELES, CALIF.
SHEET 92."