Sony CFD-CD777SMK2 Service Manual ▷ View online
CFD-CD777SMK2
21
21
6-3.
BLOCK DIAGRAM – MAIN Section –
1
9
10
12
32
2
29
30
3
27
28
14
15
R-CH
S304 (1/4)
REC/PB
S304 (3/4)
REC/PB
AU +7.5V
Q330
Q330, 335
SWITCHING
Q335
AU +7.5V
AU +7.5V
REC MUTING
Q305
TR-C
TR-B
SWITCH
CONTROL
R-CH
R-CH
T301
BIAS OSC
DECK B
HE601
(ERASE)
R-CH
L-CH
R-CH
L-CH
DECK A
HRP601
(REC/PB)
HP601
(PB)
A-DECK-L
RA-IN-L
TV-IN-L
CD-IN-L
MIC-IN
7
MIC/HS
B-DECK-L
TAPE
NF-L
TAPE
OUT-L
FUNCTION
A/B
NS/HS
R-CH
J303
R-CH
R-CH
R-CH
IN
OUT1 – OUT5
LEVEL METER
LED DRIVE
IC104
D101 – 105
(L-CH LEVEL METER)
D322
D301 – 305
D329 – 332
COM +5V
D329
D330
D331
D332
D306 – 320
MUTING
SWITCH
SWITCH
Q304
SWITCHING
Q313
LINE
OUT-L
L-IN
L-OUT
R-OUT
GRAPHIC EQUALIZER AMP
IC102
REC/PB EQ AMP,
FUNCTION SWITCH, AGC,
REC BIAS OSC
IC101
VOL
R-IN
LINE1
LINE2
BAL
15dB
15dB
29dB
29dB
LINE
OUT-R
17
6
8
8
15
3
4
10
13
REC
VREF
PB
S304 (4/4)
REC/PB
S601
(DECK B PLAY)
S605
(DECK A PLAY)
RV303
REC
PB
OFF
ON
REC PB
EQ
AMP
INPUT
SELECT
SWITCH
REC
EQ AMP
N.F.
AGC
Q312
BUFFER
Q302, 303
DSS
SWITCHING
Q301
NORMAL/HIGH
SPEED CONTROL
Q307, 308
MUTING
Q101, 110,
Q201, 210
MUTING
CONTROL SWITCH
Q314
AGC
CIRCUIT
MIC
AMP
GRAPHIC
EQUALIZER
CONTROL
LOGIC
CIRCUIT
TUNER L-CH
MUTING
CD L-CH
REC
L
TV/LINE IN
MIC301
MIC
J302
MIX MIC
R
+
S305 (1/2)
ISS, FM MODE
S303
HIGH SPEED
DUBBING
5BAND GRAPHIC
EQUALIZER
1 (ST)
2 (ST)
3 (MONO)
S301 (1/2)
PRESET MODE
S301 (2/2)
L-CH
R-CH
PRESET MODE
MANUAL
DISCO
PARTY
LIVE
MANUAL
DISCO
PARTY
LIVE
S302 (2/3)
FUNCTION
BALANCE
LIVE
PARTY
DISCO
MANUAL
RV301
VOLUME
RV302
TAPE SEPPED
(NORMAL)
CD
TV/LINE IN
RADIO
DUBBING
TAPE
(CD/RADIO OFF)
DECK B
1, 2, 20 – 22
1 – 4, 6
+
M
MOTOR B+
M601
(CAPSTAN/REEL)
• SIGNAL PATH
: FM
: CD
: TAPE PLAY (DECK A)
: TAPE PLAY (DECK B)
: TAPE REC (DECK B)
: MIC INPUT
• R-ch is omitted due to same as L-ch.
E
(Page 22)
F
(Page 22)
A
(Page 20)
B
(Page 20)
C
(Page 19)
G
(Page 22)
CFD-CD777SMK2
22
22
6-4.
BLOCK DIAGRAM – AMP, POWER SUPPLY Section –
+
–
+
–
–
+
–
+
–
–
D337
POWER ON
MUTING DRIVER
Q350
COM +5V
CD +5V
TUNER B+
AU +7.5V
DC +12V
POWER AMP
(IC103) B+
L-CH
+IN
+IN
POWER AMP
IC103
L-CH
+OUT
L-CH
–OUT
R-CH
+OUT
R-CH
–OUT
–IN
–IN
R-CH
+IN
+IN
–IN
R-CH
L-CH
–IN
SW
9
B+ SWITCH
Q317, 331
PRE
DRIVER
POWER
AMP
7
8
10
3
20
22
17
14
PRE
DRIVER
POWER
AMP
PRE
DRIVER
POWER
AMP
PRE
DRIVER
POWER
AMP
+5V
REGULATOR
Q319
+7.5V
REGULATOR
Q309
+7.5V
REGULATOR
Q311
MOTOR B+
CD +7.5V
5
4
TUNER MUTE
S302 (3/3)
FUNCTION
S302 (1/3)
FUNCTION
D327
OPR/BATT
CD
TV/LINE IN
RADIO
DUBBING
TAPE
(CD/RADIO OFF)
S604
(DECK A FF/REW)
S603
(DECK B FF/REW)
SP901
(WOOFER)
J301
PHONES
J304
SPEAKER
IMPEDANCE 4Ω
L-CH
R-CH
SP902
(TWEETER)
SP904
(TWEETER)
SP903
(WOOFER)
D340
D350
D323
+10V
REGULATOR
Q310
D321
DRY BATTERY
SIZE ‘‘D’’
(IEC DESIGNATION
R20)
8PCS. 12V
T901
POWER
TRANSFORMER
F901
RECT
D901 – 904
VOLTAGE
SELECTOR
S901
F902
D905
J901
AC IN
J902
DC IN 12V
E
(Page 21)
F
(Page 21)
MUTING
G
(Page 21)
D
(Page 19)
• SIGNAL PATH
: TUNER
+
CFD-CD777SMK2
23
23
6-5.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
• Circuit Boards Location
REMOTE CONTROL board
CONTROL board
SPEAKER board
MOTOR board
MAIN board
BATTERY
board
board
DC JACK board
POWER board
FINE TUNING board
AMP board
R/P SW board
H/P board
LED
board
board
VOL board
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.
•
f
: internal component.
•
5
: fusible resistor.
•
C
: panel designation.
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
x
: parts mounted on the conductor side.
•
W
: indicates side identified with part number.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
•
A
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 12 V and fed with regulated dc power
supply from battery terminal.
• 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.
F
: FM
f
: MW
E
: TAPE PLAY (DECK A)
d
: TAPE PLAY (DECK B)
G
: TAPE REC (DECK B)
J
: CD
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
CFD-CD777SMK2
24
24
6-6.
PRINTED WIRING BOARDS – MAIN Section –
•
See page 23 for Circuit Boards Location.
D1
G-12
D2
G-12
D3
C-9
D5
C-9
D6
C-10
D7
G-13
D8
G-13
D301
B-8
D302
A-8
D303
B-8
D304
B-8
D305
B-8
D306
B-8
D307
B-8
D308
B-8
D309
B-8
D310
B-8
D311
B-8
D312
B-8
D313
B-8
D314
B-8
D315
B-8
D316
B-8
D317
B-8
D318
A-8
D319
B-8
D320
B-8
D322
C-3
D333
D-8
D334
D-8
D340
C-3
D350
C-3
D701
H-8
D704
I-10
IC1
D-12
IC101
E-6
IC102
B-6
IC701
H-8
IC702
G-7
IC703
J-9
IC704
G-6
Q1
C-13
Q2
D-9
Q4
D-9
Q5
D-9
Q6
D-9
Q7
D-8
Q8
D-8
Q101
I-5
Q110
E-9
Q201
I-5
Q210
E-8
Q301
B-9
Q302
C-8
Q303
C-8
Q304
C-3
Q305
C-3
Q307
D-3
Q308
D-3
Q312
C-7
Q313
D-8
Q314
D-3
Q317
D-3
Q330
E-5
Q331
D-4
Q335
D-5
Q350
B-4
Q701
H-6
Q702
G-5
Q703
H-6
Q704
G-5
Q705
F-5
Q706
F-5
• Semiconductor
Location
Ref. No.
Location
(Page 30)
(Page 30)
(Page 30)
JW714
RV703
JW202
JW204
JW745
J303
JW705
R726
C700
R722
JW751
JW211
Q307
R353
IC703
C350
RV702
R776
C732
R767
R734
CNW312
R731
C777
C730
JW716
C726
C731
R753
R781
R710
C773
L703
C743
C
7
4
2
JW723
L704
JW719
JW712
JW721
L714
C701
R765
C745
JW709
C830
D701
L702
C799
C763
C795
R799
Q701
JW166
R763
C712
C744
L713
R792
C750
R361
C759
C765
C780
JW713
R725
C708
C786
JW717
JW137
JW191
R401
JW160
JW189
R766
RV302
R764
R758
JW715
C
7
6
4
R740
C
7
7
4
JW702
R752
C794
L712
C354
JW182
L709
C
7
8
3
C753
L711
L701
C751
C725
R743
JW737
JW730
JW720
C717
R723
R715
C715
R716
C713
JW726
R795
R741
Q703
JW727
JW728
R701
C831
C796
C
7
1
6
JW704
C707
C797
JW750
R791
R749
JW707
C727
JW729
C
7
0
4
JW708
C793
R759
R757
JW718
C746
JW722
R745
C
7
2
9
R744
C755
R700
R775
C728
JW731
C734
C
73
6
C785
C
7
8
1
C710
C798
C
7
3
3
R707
JW195
C752
Q330
C705
C714
R780
JW747
R756
C792
R768
C788
R717
JW748
JW744
C718
R714
R706
C711
R708
JW735
D704
JW749
C
7
0
9
R705
R704
JW733
R712
JW732
R703
C756
JW734
C747
JW706
L710
R774
C790
R709
C760
RV701
JW765
R727
C
72
1
R769
C
70
6
R730
R746
R702
X701
R742
JW724
R754
JW725
C
7
0
2
CNP703
RV704
JW25
D5
JW24
D3
C38
R21
JW18
R13
R16
Q6
C5
D7
JW13
JW199
CNP701
C37
CF4
R19
Q706
R9
JW203
Q8
Q1
JW172
C399
JW205
R379
JW122
R20
Q7
JW4
JW171
D2
R17
JW170
JW145
JW198
L5
R230
C396
JW209
JW176
R386
JW217
JW6
JW218
C6
JW219
CNP313
JW207
R18
JW26
CT5
R106
R250
C2
JW212
Q210
Q110
JW216
JW215
Q101
Q201
JW197
C7
T1
Q335
JW119
JW1
JW19
C3
JW121
JW161
JW20
C11
R8
R7
C19
C16
R4
JW21
C25
C30
C28
C27
C1
C21
R402
C32
C31
R14
JW200
D1
R5
R2
IC1
L2
L1
C22
C24
C26
R3
RV2
C23
C18
JW201
C14
C29
CF1
CF2
R15
L9
L4
L6
L8
S1
CT8
CT6
C10
C13
C15
C12
C9
JW22
C8
Q2
C20
R10
R12
R400
L3
JW3
R22
Q4
FL1
JW2
R26
C351
D8
R150
Q5
R24
JW139
D6
CF3
R23
JW27
CNP1
JW206
R341
C331
R370
CNP710
R392
C226
C321
R393
C126
R201
C201
JW163
C101
R202
R102
C317
C326
C210
C110
C211
C325
C324
C323
C329
R101
R340
R342
R343
JW194
S305
C204
JW183
JW149
C104
C105
C205
CNW303
C111
C320
R372
R371
R205
C207
C208
C107
C108
R105
C202
JW187
JW175
C102
C206
C106
R204
R104
CNP302
R103
R203
CNP301
C311
C109
C319
T301
IC101
R338
C209
JW185
R381
C340
CNP311
R369
R339
JW188
C333
CNP308
C327
C339
JW210
C335
JW193
JW127
JW167
R130
JW129
JW184
Q331
JW173
S301
C127
S303
RV303
C114
C212
C213
R354
R323
R107
R352
C112
R357
R346
R319
C214
C306
R351
R398
C393
R391
R399
D333
JW220
JW126
JW125
Q312
R355
R328
Q303
Q302
R373
JW190
JW154
R327
R332
JW156
Q308
JW148
C341
R325
IC102
C338
R326
C113
C303
R322
R321
R320
JW135
R324
D322
R215
JW132
R383
D305
R350
R375
JW192
R382
JW180
C227
C302
C334
R394
JW177
R384
C337
D334
JW213
R331
C308
C307
CNP307
R329
R330
R310
R313
R314
R308
D309
CNP304
D311
D308
D307
D317
D313
D316
C400
D315
D320
JW159
D310
D312
D318
D306
D304
D303
D302
D301
D319
R311
R312
R309
R306
R316
JW131
R317
R318
R307
D314
R336
R335
R334
JW162
R315
JW124
JW142
C336
R349
R348
JW120
CNP315
JW141
JW178
JW123
JW155
R344
S302
Q304
JW128
R377
R368
R305
R301
R333
JW169
Q301
R302
R207
R303
R304
C345
R347
R345
R108
R356
R208
R362
C344
R115
R376
Q313
JW130
JW140
JW157
Q305
R378
JW168
D340
R206
C301
Q317
JW158
C398
JW181
R397
Q705
Q704
Q702
C861
R790
C789
R777
R778
C33
C395
R403
C150
C250
C103
C203
JW743
C878
R897
C401
C402
C251
C151
L720
JW754
JW755
JW756
JW757
JW759
JW760
JW761
JW762
JW763
JW766
JW767
JW221
JW222
JW223
JW224
C403
JW233
L10
JW34
JW35
CT7
L7
JW28
JW8
JW9
JW10
C34
JW138
JW143
JW144
JW186
JW150
JW151
JW152
JW153
C322
JW
2
1
4
JW164
JW165
JW758
JW
7
4
2
JW736
D350
C782
C305
C304
C43
JW147
JW196
Q314
JW
1
3
4
JW133
IC701
IC702
IC704
S304
JW
1
4
6
CNP312
CNP303
R11
RV1
C
N
W
1
MOTOR BOARD
M901
(SPINDLE)
M
S702
(LIMIT)
M902
(SLED)
M
6
CN703
1
Q350
JW32
JW764
R720
C723
C720
C722
B
C
E
1
3
1
15
30
16
B
C
E
B
C
E
E
C
B
17
32
16
1
1
1
12
13
37
36
48
24
25
6
E
C
B
E
C
B
E
C
B
E
E
5
1
C
B
E
C
B
E
C
B
C
B
E
C
B
E
C
B
E
C
B
1
1
2
15
16
B
C
E
B
C
E
1
64
19
20
52
51
32
33
1
4
1
11
22
12
1
5
1
1
8
6
1
32
16
17
B
C
E
B
C
E
14
1
E
C
B
C
B
B
C
E
B
C
E
E
E
B
C
E
B
C
E
E
E
C
B
B
B
C
E
B
B
C
E
B
C
E
D
G
S
1
12
C
E
C
1
1
6
3
1
12
1-670-294-
12
(12)
1-680-758-
11
MAIN BOARD
FM OSC
FM ANT
AM IF
SW2
ANT
SW1 ANT
ANT1
FM/SW
TEKESCOPIC
ANTENNA
CT4
CT2
CV4
CT3
CV3
CV2
CT1
CV1
-6
-1
-2
-3
-4
-5
1
RV303
8
SW2 OSC
SW1 OSC
MW OSC
BAND
PRESET MODE
MANUAL
DISCO
PARTY
LIVE
FM
SW1
SW2
MW
ON
OFF
REC
PB
S302
CD
TV/LINE IN
RADIO
DUBBING
TAPE
(RADIO/CD OFF)
-1
-2
-3
-4
-5
-6
-7
-8
-1
-2
MW FERRITE-ROD
ANTENNA
TP
(VC)
(FOCUS)
(TRACKING)
-1
-2
ISS,
STEREO MODE
1
ST
2
ST
3
MONO
OPTICAL PICK-UP
BLOCK
(KSS-213R)
R
L
TV/LINE IN
1
24
12
13
BIAS OSC
LED BOARD
CNW307
D
1
8
5BAND GRAPHIC EQUALIZER
10kHz
400Hz
MEGA BASS
BALANCE
4kHz
1kHz
HIGH SPEED
DUBBING
-2
-1
-3
FUNCTION
AMP BOARD
CNW313
F
AMP BOARD
CNW315
E
1
2
3
4
5
6
7
3
7
CONTROL BOARD
CNP712
A
2
CONTROL BOARD
CNW311
B
1
VOLUME BOARD
CNW308
C
1
5
1
6
1-670-298-
12
(12)
-4 -1
-3 -2
(REC/PB)
6
4
5
1
1
4
5
HRP601
HE601
(L)
DECK B
DECK A
(R)
HP601
(L)
(R)
S605
(DECK A PLAY)
S604
(DECK A FF/REW)
S601
(DECK B PLAY)
S603
(DECK B FF/REW)
M601
(CAPSTAN REEL)
1
12
M
A
B
1-670-304-
12
(12)
1
3
FINE TUNING BOARD
FINE TUNING
A
B
C
D
E
F
G
H
I
J
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R/P SW BOARD
B
C
(Page 32)
(Page 30)
(Page 32)
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