Sony CFS-B31

5-6. SCHEMATIC DIAGRAM — AUDIO/POWER SECTION —
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1
HRP90t
REC/PB HEA®
CHASSIS
HESOt
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2
3 4 5
1C301
PRE AMP
MIC3O1
2.2
022
1€301
(1/2)
it
(4)
BA3420AL
8301-3
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REC
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50V
7
TUNER BOARD
CN3
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6
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R101
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R203 8. 2k R202 6.8k
dE
C202 1000p x
C204 1000p BX
+
0
C209 3500p X
ia
R341 33
0.3
R342 335k (Pr
BIAS Osc 0.3 )
ce
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the 8 os 2° 1S 18 18 HL Sen tt
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Fm MOBE/ISS|
C320 220p B
k
C306 22 25¥
9302
2SA733-P
BIAS +B SWITCH
(Q.4)
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osc
R344 4.7K
(B+)
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s a
s pa = POWER AMP |
re as = $303-2 (7)
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TAPE R310 OPR/BATT
+9V.STAND BY ad 6
208 I
R214 +4 B+ =
100 SOV ka =e (¥)
e— : och? ~~
0301
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R313
100
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Sasa
(4.1) 0
9.7
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TAPE POWER CNUT
>_> a
Fsot
Tt.25A/250¥
V9
-O—
M901
MOTOR
FM:79mA
AM (LW) :76mA
PLAY: 1358A
REC: 168mA
FF:12350A
REW:125mA
TUNER/LCA ®-—
SECTION
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|
| TOTAL CURRENT
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f) [ [POWER BOARD] Sar
7 ES soe areas en
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Mecet-s-seend oases
15
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SP101
SPEAKER
L-CH
CNJ801
ARY BATTERY
S)ZE"C™
(18c DESIGNATION )
Ri4
éPcs. 3Vv
16 17 18
NOTE
*All capacitors are in pF unless otherwise noted. pF: pur
SOW or less are not indicated except for electralytics
and tantalums,
*All resistors ore in Q and 1/4W or less unless otherwise
specified,
* [__] :pane! designation,
Note:The components identified by mark AN or dotted
line with mark AXore critical for safety,
Replace only with port number specified,
¢ [Bt] :Bt Line,
¢ Voltages and waveforms are dc with respect to ground
under no-Ssignal conditions,
no mark: TAPE
( =): FM
¢Voltoges ore token with a VOM([nput impedance 10MQ).
Voltage variations may be noted due to normal produc-
tion tolerances,
* Total current is measured with no cossette instolled.
© Signal path,
:FM
2> :PB
>>> :REC
CFS-B31/B31L