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ANT ey
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AM
RADIO.
Al
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417-201
ae
417-818
SCHEMATIC OF THE
HEATHKIT®
FM STEREO TUNER
MODEL CR-1000A
NOTES
1, ALL RESISTORS ARE 1/2 WATT UNLESS MARKED OTHERWISE
RESISTORS ARE IN OHMS (K=1000, M1, 000, 000)
2. CAPACITOR VALUES LESS THAN 1 ARE IN UF. VALUES OF 1
AND ABOVE ARE IN pF UNLESS MARKED OTHERWISE.
4, THIS SYMBOL INDICATES GROUND FOIL ON A CIRCUIT
BOARD STEREO
LAME,
4. SE THIS SYMBOL INDICATES CHASSIS GROUND
5. o THIS SYMBOL INDICATES CONNECTING POINTS ON THE
CIRCUIT BOARD
O-EZPFERRITE BEAD SYMBOL
76
1 THIS SYMBOL INDICATES A VOLTAGE MEASUREMENT
COITAKEN UNDER "NO SIGNAL” CONDITIONS. WITH THE
MUTE ACTIVATED
8. THIS SYMBOL INDICATES A VOLTAGE MEASUREMENT
TAKEN WHEN THERE 1S A STEREO SIGNAL PRESENT
STEREO
IND
9. 3 THIS SYMBOL INDICATES A VOLTAGE THAT VARIES
ACCORDING TO THE SETTINGS OF R16.
10. ALL VOLTAGE MEASUREMENTS TAKEN WITH A HIGH-
IMPEDANCE INPUT VOLTMETER AND MAY VARY + 20%.
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Q2L
417-201
nae 44
se top
BALANCE
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3 Rs
10K
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DIFFERENTIAL VOLTAGE 1
AMPLIFIER AMPLIFIER '
DRIVER OUTPUT '
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SCHEMATIC OF THE
HEATHKIT®
CRA-1000-1
AMPLIFIER
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AMPLIFIER AMPLIFIER
DRIVER OUTPUT
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SCHEMATIC OF THE
HEATHKIT®
FM STEREO TUNER
MODEL CR-1000A
Q6R gees
22 JUMPER PLUG
294829
(USED witht cR=1000A)
Oe onty
BID
NOTES
228 TO CAR
417-201 A 5——> GD Brit
1, ALL RESISTORS ARE 1/2 WATT UNLESS MARKED OTHERWISE oar Fn
RESISTORS ARE IN OHMS (K=1000, M+1, 000, 000),
car
ase Paaet
2700 JO¥F
2. CAPACITOR VALUES LESS THAN 1 ARE IN UF. VALUES OF 1
AND ABOVE ARE IN pF UNLESS MARKED OTHERWISE.
3. THIS SYMBOL INDICATES GROUND FOIL ON A CIRCUIT
ARD
2 ©
Oe ee ee nn nnn nen nee -- ===:
4. H& THis SYMBOL INDICATES CHASSIS GROUND
—}
7
aro QsL
20K ans2oa
5. o THIS SYMBOL INDICATES CONNECTING POINTS ON THE
CIRCUIT BOARD
O-EZPFERRITE BEAD SYMBOL.
8
1 THIS SYMBOL INDICATES A VOLTAGE MEASUREMENT
COITAKEN UNDER "NO SIGNAL” CONDITIONS. WITH THE
MUTE ACTIVATED
8. THIS SYMBOL INDICATES A VOLTAGE MEASUREMENT
TAKEN WHEN THERE 1S A STEREO SIGNAL PRESENT
Audio LEFT
oureby 2NS2324
oNBUTS SPREE
an
RIGHT SPKR
an
Q2L
417-201
-001
FEEOTHROUGH com.
CAPACITORS.
pas C44
fe tope
Buu LEFT SPR
an
Ras
tzox S430
9. 3 THIS SYMBOL INDICATES A VOLTAGE THAT VARIES
ACCORDING TO THE SETTINGS OF R16.
10. ALL VOLTAGE MEASUREMENTS TAKEN WITH A HIGH-
IMPEDANCE INPUT VOLTMETER AND MAY VARY + 20%
SCHEMATIC OF THE
HEATHKIT®
CRA-1000-1
AMPLIFIER
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1
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