Sony CFD-ZW700 / CFD-ZW705 / CFD-ZW750 / CFD-ZW770 Service Manual ▷ View online
– 37 –
– 38 –
5-12. SCHEMATIC DIAGRAM — POWER SUPPLY SECTION — (for CFD-ZW750)
CFD-ZW750/ZW770
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
1
: fusible resistor.
•
C
: panel designation.
•
U
: B+ Line.
• 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
no mark : FM
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
Note:
The components identi-
fied by mark
The components identi-
fied by mark
!
or dotted
line with mark
!
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
!
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
(Page 33)
5-13. PRINTED WIRING BOARD — MAIN SECTION — (for CFD-ZW770) • Refer to page 16 for Circuit Boards Location.
CFD-ZW750/ZW770
– 39 –
– 40 –
1
6
S303
(HIGH-SPEED
DUBBING)
S304
(MD POWER)
S305
(MD PLAY)
J302
SPEAKER
IMPEDANCE 6
Ω
M
S306
(MD PLAY)
S307
(MD POWER)
M301
(CAPSTAN/REEL)
A
8
1
B
+
–
PHONES
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
(Page 46)
(Page 25)
(Page 45) (Page 45)
(Page 26)
(Page 21)
(Page 45)
Note:
• X
: parts extracted from the component side.
• b
: Pattern from the side which enables seeing.
– 41 –
– 42 –
– 43 –
CFD-ZW750/ZW770
5-14. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — (for CFD-ZW770) • Refer to page 53 for IC Block Diagrams.
IC1
H-11
IC2
H-10
IC301
G-6
IC302
D-7
IC303
B-6
IC304
B-8
IC305
H-4
Q1
F-10
Q101
C-7
Q201
C-6
Q301
F-6
Q302
F-6
Q303
F-6
Q304
F-7
Q305
F-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
H-8
Q317
H-8
Q318
F-8
Q319
F-8
Q320
C-11
Q321
E-7
Q322
E-8
Q323
E-8
Q324
C-11
Q325
C-11
Q327
D-11
Q328
D-11
Q329
D-11
Q330
D-9
Q331
B-9
Q332
H-4
Q333
B-9
Q334
I-4
Q335
I-4
Q336
I-5
Q337
I-5
Q338
D-8
Q339
D-9
Q340
G-4
D1
F-12
D2
F-12
D3
F-11
D4
B-12
D5
B-12
D6
H-12
D8
C-12
D9
C-12
D10
H-12
D301
E-7
D302
H-5
D303
I-5
D304
F-4
D305
F-4
D306
H-9
D307
H-9
D308
H-9
D309
H-8
D310
H-8
D311
E-8
D312
E-8
D313
C-11
D314
C-11
D315
C-10
D316
D-10
D317
D-10
D318
D-10
D319
C-11
D320
C-11
D321
D-10
D322
D-10
D323
D-9
D324
E-10
D325
B-8
D326
B-9
D327
C-11
D328
D-10
D329
H-4
D331
B-9
D333
D-10
D334
H-4
D335
H-5
D336
I-8
D337
I-8
D338
H-8
D339
H-8
D340
H-8
D341
G-4
D342
G-4
D343
G-3
• Semiconductor Location
Ref. No.
Location
Ref. No.
Location
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
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
(
no mark : FM
(
) : PB (TAPE)
<
> : REC (TAPE)
[
] : CD STOP
(( )) : DUBBING
<< >> : HIGH-SPEED 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.
tion tolerances.
• Signal path.
F
: FM
E
: PB (DECK A)
d
: PB (DECK B)
a
: REC (DECK B)
J
: CD
(Page 50)
(Page 24)
(Page 27)
(Page 47)
– 44 –
– 45 –
– 46 –
CFD-ZW750/ZW770
5-15. PRINTED WIRING BOARDS — POWER SUPPLY SECTION — (for CFD-ZW770) • Refer to page 16 for Circuit Boards Location.
DRY BATTERY
SIZE " D "
(IEC DESIGNATION R20)
6PCS,9V
< POWER >
DRY BATTERY
SIZE " AA "
(IEC DESIGNATION R6)
3PCS,4.5V
< BACK UP >
1
A
B
C
D
E
F
G
H
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
LAMP BOARD
Note:
• X
: parts extracted from the component side.
• b
: Pattern from the side which enables seeing.
Ref. No.
Location
D901
E-4
D902
F-4
D903
E-4
D904
F-4
D905
B-5
D906
G-5
D907
G-5
D908
G-5
D909
B-5
D910
B-5
D911
B-5
• Semiconductor
Location
(Page 40)
(Page 40)
(Page 40)
(Page 39)
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