Sony CFD-ZW700 / CFD-ZW705 / CFD-ZW750 / CFD-ZW770 Service Manual ▷ View online
– 19 –
– 20 –
5-4. BLOCK DIAGRAM — MAIN SECTION —
CFD-ZW750/ZW770
M
23
78
67
17 18 19 20
21
68
2
4
31
32
29
30
66
38–41
76
12
3
CD L-CH
S301-1
REC
PB
R-CH
1
32
19
29
30
10
7
28
27
14
15
12
20
A-L
B-L
BIAS
BIAS
TR-C
TR-C
BIAS
TR-B
TR-B
TU-L
AGC-T
CD-L
REC EQ
BIAS
OSC
LOGIC
MIC/HS
A/B
NOR/HI
FUNCTION
OUT-L
OUT-R
REC/PB
PRE AMP
IC301
RV301
TAPE
SPEED
Q306
M301
(CAPSTAN/REEL)
A
B
–
+
ISS1
Q318
ISS3
Q319
Q316
Q307
Q304
T301
BIAS
BIAS
OSC
Q317
MD
POWER
DETECTOR
Q340
R-CH
R-CH
R-CH
L-CH
HRP301
RECORD/
PLAYBACK
HEAD
(DECK B)
L-CH
R-CH
HP301
PLAYBACK
HEAD
(DECK A)
1
CD SECTION
R-CNT/ST-MO
2
CD SECTION
S304
(MD POWER)
DECK A
S307
(MD POWER)
DECK B
9V
9V
S301-3
REC
PB
REC
79 C-DOR
COM0
ROCK
POP
JAZZ
CLUB
MANUAL
COM3
42–64
73•74
SEG0
SEG22
R-LATCH
R-CLK
LCD801
LED
SWITCH
Q807
5 BAND
GRAPHIC
EQUALIZER
D806-809
TUNER
TUNER
POWER AMP
IC304
Q101
Q323(ZW770)
Q332(ZW750)
Q332(ZW750)
17
2
1
22
21
20
13
4
GRAPHIC
EQUALIZER
CONTROLLER
VOLUME/SOUND CONTROL
IC302
IC803
5 BAND PROCESSOR
IN2
OUT2
100
400
1K
4K
10K
VOL
SP901
SPEAKER
(L-CH)
R-CH
R-CH
J301
PHONES
Q301
Q302
Q305
Q303
S306
(MD PLAY)
DECK B
S801
CD DOOR
OPEN/CLOSE
22
S305
(MD PLAY)
DECK A
16
DUB
14
RADIO
3
CD
69
V-DATA/R-DATA
71
V-CLOCK
70
V-LATCH
15
TAPE
TC2
TC1
TUNER
TAPE
CD
X802
32.768KHz
X801
4.19MHz
CLOCK
SHIFT
Q801
CLOCK
SHIFT
Q802
RESET
IC802
B/UP +5V
REM +B
RST
B-MUTE
2
SIRCS
RECEIVER
IC811
RMC
13
PCON
80
REGCK
INT/SFT-CLK
XTAL
24
KEY1
25
KEY2
26
KEY3
27
KEY4
EXTL
TXE
TX
BL-CONT
77
A-MUTE
LAMP ON
SWITCH
Q334, 335
CD 5V
SWITCH
Q313, 314
TUNER 6V
SWITCH
Q311, 312
PL801–803
CD 5V
CD
TUNER
6V
TUNER
CE
CK
19
12 13
21
20
8
5
7
13
14
17
19
20
21
24
22
4
6
16
15
11
12
10
2
LP-OUT
AM-IN
FM-IN
X-OUT
ST-IND
X-IN
IF-IN
MO/ST
BAND
X1
75KHz
14
9
18
11
AM
OSC
FM
OSC
AM
MIX
FM
MIX
AM
RF-IN
RF-IN
AM
OSC
MIX
OUT
OUT
FM
OSC
FM
RF-IN
RF-IN
FM
RF-
OUT
IF
BUFFER
LPF1/
MO/ST
LPF2/BAND
AM
DET
7
FM
DET
AF
BUFFER
FM
MPX
MUTE
R-CH
QUAD
R-OUT
MPX-
IN
DET-
OUT
L-OUT
CF2
CF1
CFT1
AM IFT
AM
IF-IN
IF-IN
FM
IF-IN
IF-IN
D1
D2
D10
CT1
L1
FM-RF
L2
FM-OSC
CT2
L3
AM
FERRITE-ROD
ANTENNA
FL1
04
BPF
ANT1
FM
TELESCOPIC
ANTENNA
D3
L4
AM-OSC
FM/AM FRONT-END,
IF DET, FM STEREO
DEMODULATOR
IC1
SYSTEM CONTROL
IC801 (2/2)
PLL
IC2
S301-4
HIGH
NORMAL
3
1
OSC-
OUT
• Signal path
: FM
: AM
: PLAY (DECK A)
: PLAY (DECK B)
: REC (DECK B)
: CD
• R-ch : same as L-ch.
1
3
S301
ISS
3 2 1
9V
TUNER
6V
TUNER
6V
TUNER
6V
TUNER
6V
TUNER
6V
TUNER
6V
TUNER
6V
TUNER
6V
IF-OUT
ST-IND
BAND
3
DI
DO
Q1
LED
SWITCH
Q808-810
ZW770
DUBBING
SWITCH
Q308-310
1KHz BAND
DETECTOR
Q315
5 BAND GRAPHIC EQUALIZER
RV401-405
MEGA BASS
DETECTOR
Q321, 322
S303
HIGH-SPEED
DUBBING
D906
D907
D908
D321
BACK UP
SWITCH
Q320, 324, 325,
327-329
POWER
SWITCH
Q338, 339
6V REG
(FOR AUDIO)
Q331
6.2V REG
(FOR CD)
(FOR CD)
Q333
REG. CHECK &
REM+B SWITCH
Q336, 337
J901
~ AC IN
D814
OPR/BATT
D810
MANUAL
T901
POWER
TRANSFORMER
2
3
IC305
BACK UP 5V IC
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION R6)
3PCS, 4.5V
(BACK UP)
DRY BATTERY SIZE "D"
(IEC DESIGNATION R20)
6PCS, 9V (POWER)
REM+B
B/UP
+5V
9V
VT 9V
CD 6.2V
R367
9V
9V
6V
6V
6V REG
(FOR AUDIO)
Q331
7.5V REG
(FOR B/L)
Q332
RECT
D905, 909-911
RECT
D901-904
5V REG
(FOR CD/TUNER)
Q330
TUNER 5V
5V REG
(FOR CD/TUNER)
Q330
TUNER
5V
9V
R901
F901
Q811–813
ZW770
ZW770
6V
S824-827
S816-823
S808-815
S803-807
12
11
10
9
6
4
3
2
5
A06/10KHz
DATA
CLK
LAT
LAT
A05/4KHz
A04/1KHz
A03/400Hz
A02/100Hz
A01/VR
EQ10K
EQ4K
EQ1K
EQ400
EQ100
6V
6V
ZW770
ZW750
ZW770
ZW770
ZW750
ZW770
1
A
B
C
D
E
F
G
H
2
3
4
5
6
7
8
9
10
11
CD MOTOR BOARD
1-658-023-
S701
(LIMIT)
M701
(SPINDLE)
CNP707
1
6
12
(12)
M
M702
(SLED)
(SLED)
M
1-672-179-
(ZW750)
(ZW770)
5-5. PRINTED WIRING BOARDS — CD SECTION — (for CFD-ZW750/ZW770) • Refer to page 16 for Circuit Boards Location.
CFD-ZW750/ZW770
– 21 –
– 22 –
Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
• b
: Pattern from the side which enables seeing.
Ref. No.
Location
D701
D-8
D702
H-8
D703
C-5
IC701
F-4
IC702
C-3
IC703
F-7
Q701
G-2
• Semiconductor
Location
Note on Schematic Diagram:
• 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.
•
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
condition.
no mark : CD STOP
no mark : CD STOP
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
J
: CD
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 portant le numéro
spécifié.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
(Page 30, 40)
(Page 25)
5-6. SCHEMATIC DIAGRAM — CD SECTION — (for CFD-ZW750/ZW770) • Refer to page 22 for Note on Schematic Diagram.
• Refer to page 51 for IC Block Diagrams.
– 23 –
– 24 –
CFD-ZW750/ZW770
Approx. 100mVp-p
IC701
$¶
(TEI)
• Waveforms
(MODE:PLAY)
1
2
3
4
5
2.5V
1.3
±
0.5Vp-p
Approx. 200mVp-p
IC701
1
(FEO)
2.5V
IC703
@¡
(MDP)
2Vp-p
7.6
µ
sec
16.9344MHz
IC703
&¡
(XTAO)
2.2Vp-p
IC701
#£
(RFO)
(Page 33, 43)
(Page 27)
5-7. PRINTED WIRING BOARDS — CONTROL SECTION — (for CFD-ZW750/ZW770) • Refer to page 16 for Circuit Boards Location.
CFD-ZW750/ZW770
– 25 –
– 26 –
1
A
B
C
D
E
F
G
H
I
2
3
4
5
6
7
8
9
10
11
12
13
PRESET
R895
C819
L802
C829
(TEST A)
(TEST B)
D815
S801
CD DOOR
OPEN/CLOSE
Note on Schematic Diagram:
• 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.
• 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)
<
> : DUBBING
[
] : CD STOP
• 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 on Printed Wiring Boards:
• X
: parts extracted from the component side.
• b
: Pattern from the side which enables seeing.
Ref. No.
Location
D801
G-9
D804
E-5
D805
E-5
(D806)
D-4
(D807)
E-4
(D808)
E-4
(D809)
F-4
D810
F-4
(D811)
H-4
(D812)
I-4
(D813)
I-4
D814
H-2
D815
D-10
IC801
G-6
IC802
H-2
IC803
E-9
IC811
H-2
Q801
I-5
Q802
H-4
Q807
F-5
(Q808)
H-3
(Q809)
I-4
(Q810)
I-5
• Semiconductor
Location
( ) : CFD-ZW770 only
(Page 22)
(Page 30, 40)
(Page 30, 40)
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