– 31 –
– 32 –
– 33 –
PHC-ZW770L
5-10. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 43 for IC Block Diagrams.
IC302
D-7
IC303
B-6
IC304
B-8
IC305
H-4
Q2
F-10
Q13
F-10
Q40
F-10
Q41
D-12
Q42
E-12
Q43
D-11
Q44
E-11
Q61
H-10
Q101
C-7
Q201
C-6
Q301
F-6
Q302
F-6
Q303
F-6
Q304
E-7
Q305
E-4
Q306
G-4
Q307
G-4
Q308
F-4
Q309
F-4
Q310
F-4
Q311
F-9
Q312
F-9
Q313
E-9
Q314
E-9
Q315
H-7
Q316
F-8
Q317
F-8
Q318
F-8
Q319
F-8
Q320
C-10
Q321
E-7
Q322
E-8
Q323
E-8
Q324
C-11
Q325
C-11
Q327
D-11
Q328
D-10
Q329
D-11
Q330
D-9
Q331
B-9
Q332
G-4
Q333
B-9
Q334
I-4
Q335
H-4
Q336
H-5
Q337
H-5
Q338
D-8
Q339
D-8
Q340
G-4
D1
G-12
D2
F-12
D3
E-11
D7
G-9
D8
G-9
D10
B-11
D11
B-11
D13
G-9
D14
G-9
D301
E-7
D302
H-5
D303
H-5
D304
F-4
D305
F-4
D306
H-8
D307
H-8
D308
H-8
D309
H-8
D310
H-8
D311
E-7
D312
E-7
D313
C-10
D314
C-10
D315
C-10
D316
D-10
D317
D-10
D318
D-10
D319
C-11
D320
C-11
D321
D-9
D322
D-9
D323
D-9
D324
E-10
D325
B-8
D326
B-9
D327
C-10
D328
D-10
D329
H-4
D331
B-9
D333
D-9
D334
H-4
D335
H-5
D336
H-7
D337
H-7
D338
H-7
D339
H-7
D340
H-7
D341
F-4
D342
G-4
D343
F-4
IC1
G-11
IC2
G-10
IC301
G-6
• Semiconductor Location
Ref. No.
Location
Ref. No.
Location
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
C
: panel designation.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM
(
) : PB (TAPE)
<
> : REC (TAPE)
[
] : CD STOP
(( )) : DUBBING
<< >> : HIGH-SPEED DUBBING
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F
: FM
E
: PB (DECK A)
d
: PB (DECK B)
a
: REC (DECK B)
J
: CD
(Page 40)
(Page 24)
(Page 27)
(Page 37)