Sony ICF-CD855V Service Manual ▷ View online
ICF-CD855V
25
25
C302
R301
R302
R303
C917
C922
C918
C454
C455
R407
C909
R913
R912
R909
R914
R910
C907
R919
C910
R911
E C B
Q905
E C B
Q904
AK
D904
R493
R494
R492
C442
R491
X402
IC402
IC401
R916
C450
C436
C437
C919
R917
R915
C914
C915
JC302
R490
R408
R410
C402
C403
R405
R443
C453
C412
R444
C406
C410
R446
R447
C411
C413
R453
R456
R462
R459
C409
R457
R460
R451
R449
R445
R454
R401
C458
C445
C444
R488
C438
C447
C448
R486
R485
R484
R483
R482
R481
R480
R479
C421
C420
R469
R466
R463
C416
R467
R503
R502
C415
C457
R478
R477
R476
C427
C426
C423
C422
C419
C417
C418
R465
R464
C425
C424
R475
R474
R473
R472
R470
R468
JC301
R471
C435
C434
C433
C432
C431
C430
C429
C428
R496
C443
C401
R403
E C B
Q909
E C B
Q907
D907
K
A
K
D908
R918
C912
R906
C903
C319
C112
R223
R220
R121
R108
R107
C106
C107
R208
R207
R101
C121
R201
C221
C102
C202
C206
C207
C111
R209
R210
R214
R213
R113
R114
R311
R310
C318
R211
C211
C214
C215
R215
C115
C114
R115
C212
R313
R110
R109
R111
R221
R123
R120
C317
R102
R103
R202
C316
C109
C108
C209
R203
C101
C208
C201
R104
R204
C103
C203
C309
C310
R205
R105
C314
R308
R309
R497
R314
R219
R119
C118
C312
C313
C218
C324
R117
R217
R312
Q301
B C E
L402
E C B
Q401
Q402
B C E
L401
E C B
Q302
Q202
Q102
D201
D101
AK
AK
D203
D103
E
C
B
E
C
B
Q201
B C E
Q101
B C E
IC301
IC302
D903
(11)
11
1-861-269-
MAIN BOARD
CNP602
C921
S401
S401
Q908
+
1
CD BOARD
CNP702
7
JW308
JW309
JW310
JW316
JW306
JW307
JW313
JW312
JW311
JW305
JW304
JW302
JW315
JW322
JW319
JW332
JW320
JW318
JW321
JW317
D905
Q906
D906
E
C
B
Q903
E
C
B
C911
+
C905
+
C913
+
C320
+
C120
+
C220
+
C908
+
1
4
W603
JW330
JW331
JW327
JW324
JW323
JW328
JW329
JW343
JW346
JW341
JW345
JW347
JW354
JW353
JW344
JW333
JW334
JW335
JW336
JW326
JW325
C923
+
C304
+
C449
+
C408
+
JW303
JW346
JW355
1
2
13
14
CNP303
CNP302
JW301
1
2
17
18
CNP301
1
1
2
2
17
18
X401
JW342
JW337
JW338
JW339
JW349
JW350
JW340
+
C902
W901
CNP901
1
1
2
2
JW352
JW351
W604
BH301
JW358
JW363
JW359
JW364
JW365
JW360
JW361
JW362
JW372
JW373
JW374
JW356
JW357
JW369
JW370
JW371
1
6
1
11
CNP601
C311
+
C315
+
C327
+
S403
D102
D202
JW375
JW376
C219
C117
+
+
C119
+
JW377
JW368
JW367
JW366
J301
CNP304
1
1
6
12
7
4
C217
+
C325
+
C323
+
C322
+
C110
+
C210
+
A
KEY-B BOARD
W602
J
2
3
1
C
E
B
BRIGHTNESS
LOW
MID
HI
SIDE BOARD
W603
F
A
A/K
K
K
A
LCD BOARD
CNP607
G
LCD BOARD
CNP606
H
1
80
40
21
20
60
61
41
(CHASSIS GND)
(AC IN)
POWER
UNIT
K
KA
A
1
12
24
13
SP101
(L-CH)
(L-CH)
SP201
(R-CH)
1
4
CLOCK
KEY-A BOARD
W601
D
TUNER BOARD
CNP2
B
SWITCH
BOARD
W604
E
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
11
6-10. PRINTED WIRING BOARD – MAIN Section –
•
See page 19 for Circuit Boards Location.
:Uses unleaded solder.
(Page 24)
(Page 22)
(Page 24)
(Page 24)
(Page 24)
(Page 20)
(Page 24)
(Page 24)
D101
F-4
D102
F-2
D103
F-4
D201
G-5
D202
F-2
D203
F-4
D903
G-10
D904
G-10
D905
G-9
D906
G-8
D907
D-8
D908
D-7
IC301
E-3
IC302
G-4
IC401
C-6
IC402
D-4
Q101
F-4
Q102
G-4
Q201
F-4
Q202
G-5
Q301
F-7
Q302
F-5
Q401
D-4
Q402
D-4
Q903
G-7
Q904
G-10
Q905
G-10
Q906
G-9
Q907
E-7
Q908
E-9
Q909
E-8
• Semiconductor
Location
Ref. No.
Location
ICF-CD855V
26
26
LCD601
W607
W606
C401
R401
R405
C454
C435
C434
C433
C432
C431
C430
C429
C428
R486
R485
R484
R483
R482
R481
R480
R479
C436
C437
R488
R407
C408
C
406
C409
R444
L401 100
µH
R451
R
454
R457
R
460
R453
R
456
R459
R
462
CNP601
CNP602
W603
W604
C453
C
411
C412
C
410
R
466
R469
R
468
Q401
R502
C413
C417
C415
C457
C427
C426
C425
C424
C423
C422
C421
C
419
C420
R497
C402
C403
W601
R636
R638
R640
C602
C603
C604
S607
S608
R631
R648
R649
R650
R651
R667
R652
R653
R654
W602
C445
C444
R494
R493
R492
R491
C442
C458
C443
R464
R465
Q402
R503
R490
C607
C618
R
655
R661
R
662
C
619
R664
R660
R467
R478
R463
C416
CNP301
CNP606
CNP302
CNP607
D610
D609
JC605
Q611
Q612
Q610
Q609
R666
R403
R410
R408
C455
S401
X401
X402
R
470
R
471
R
472
R473
R
474
R
475
R
476
R477
R445
S403
W604
W605
R633
R632
R634
R635
R619
R620
R621
R622
R623
R624
R625
R626
R627
R628
R629
R630
S612
S611
S610
S609
S614
S613
S618
W603
S616
S617
W605
S615
R646
R647
R658
R
656
S606
S605
S604
S603
S602
S601
R603
C612
C611
R601
R605
C613
R607
R608
R610
R609
R616
R615
R614
R613
R612
R611
R617
R618
Q602
Q601
Q603
Q606
Q605
Q604
C438
BP401
BP403
BP402
D601
D602
D603
D605
D604
D606
C601
S619
IC401
C610
R447
R449
1
100k
100k
0.01
2200p
2200p
2200p
1000p
1000p
2200p
2200p
2200p
10k
10k
10k
1k
1k
10k
10k
10k
22p
22p
220k
4.7k
100
10V
2.2
0.01
10k
10k
10k
10k
10k
100k
100k
100k
100k
6P
7P
0.01
0.01
0.01
100p
1k
1k
1k
MUN5113T1
10k
0.01
1000p
100p
1000p
0.01
100p
1000p
100p
220p
100p
220p
100p
100p
100
1
1
6P
1k
1k
1k
1
1
1
100
100k
22k
47k
22k
100
22k
47k
100
0.01
0.01
1k
1k
1k
10k
0.01
0.01
0.01
47k
22k
MSD1819A
-RT1
100k
0
1
1
470
470
1k
1
1k
100
1k
1k
1M
1000p
18P
18P
18P
18P
SLP-WH118A-51
SLP-WH118A-51
0
DTA114EUA
DTA124EUA
DTA124EUA
DTA114EUA
100
100k
10k
22k
470p
32.768KHz
4.19MHz
L402
220
µH
1k
47
100
1k
1k
1k
1k
1k
220k
47k
470k
47k
47k
220k
470k
220k
100k
470k
47k
47k
47k
100k
22k
22k
47k
100k
220k
1k
1k
1k
1
1
1k
1k
1
220k
470k
100k
220k
22k
100k
47k
47k
470k
47k
22k
47k
DTC144EUA
DTC144EUA
DTC144EUA
DTC144EUA
DTC144EUA
DTC144EUA
2.2
TOL-31CSGAKAA
-KSO1
TOL-31CSGAKAA
-KSO1
TOL-31CSGAKAA
-KSO1
TOL-31CSGAKAA
-KSO1
TOL-31CSGAKAA
-KSO1
TOL-31CSGAKAA
-KSO1
1
-A39-8BT
µPD789477GC
1
0
0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
COM0
COM1
COM2
COM3
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
COM0
COM1
COM2
COM3
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
BCD
BRA
BRA
BCD
BBU
BBU
ACD
ACD
ARA
ARA
ABU
ABU
KEY0
KEY1
KEY2
KEY3
OPEN
KEY0
KEY1
KEY2
KEY3
OPEN
DI
CE
CL
WRQ
DO
RES
MUTE
CLK
D
ATA
PLL
DRF
A1
A1
SEQ
OPEN
LIQUID CRYSTAL DISPLAY
S
EG
27
S
EG
26
S
EG
25
S
EG
24
S
EG23
SEG
22
S
EG21
S
EG
20
SEG
19
S
EG
18
SEG
17
S
EG
16
SEG
15
S
EG
14
S
EG
13
S
EG
12
S
EG
11
S
EG
10
S
EG
9
S
EG
8
S
EG
7
S
EG
6
S
EG
5
SEG
4
S
EG
3
S
EG
2
S
EG
1
SEG
0
C
O
M
3
C
OM
2
C
O
M
1
C
O
M
0
1
2
1
2
DRF
V
ER
S
IO
N
KEY
3
K
EY
2
KEY
1
K
EY
0
A
VS
S
R
CLK
A
C IN
W
R
Q
M
U
TE
B
U
ZZE
R
X
R
ST
R
CE
R
D
ATA
CD
C
E
C
D
C
LK
C
D
D
AT
A
C
D
D
A
T
A-IN
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
AVDD
FSEQ
OPEN
CD
NC
AMUTE
RESET
X2
X1
VSS0
VDD0
XT2
XT1
IC
CD ON
RADIO ON
ALARM B CD
ALARM B RADIO
ALARM B BUZ
VOL DAT
VOL CLK
ALARM A CD
ALARM A RADIO
ALARM A BUZ
N
C
N
C
VLC2
VL
C1
VLC0
CO
M
0
C
O
M
1
CO
M
2
C
O
M
3
SEG
0
SEG
1
SEG
2
SEG
3
SEG
4
SEG
5
SEG
6
SEG
7
SEG
8
SEG
9
SEG10
1
4
1
2
1
4
1
7
(1/2)
2
1
(LCD BACK LIGHT)
(LCD BACK LIGHT)
LED DRIVE
Q609-612
BRIGHTNESS
MID
HI
LOW
SYSTEM CONTROLLER
Q401,402
AC CHECK
CLOCK
(CD LID OPEN/CLOSE DETECT)
LED DRIVE
Q604-606
1
2
2
1
CD
RADIO
BUZZER
ALARM B
ALARM RESET
OFF
-
TIME SET
TUNE
TIME SET
TUNE
+
SLEEP
NAP
ALARM B
CD
RADIO ON
BAND
VOL +
VOL -
MODE
SNOOZE
SLEEP OFF
LED DRIVE
Q601-603
CD
RADIO
BUZZER
ALARM A
ALARM A
PRESET
5
1
2
3
4
/
SELECT
PRESET TUNING
PO
W
ER
O
N
6-11. SCHEMATIC DIAGRAM – MAIN Section (1/2) –
•
See page 28 for Waveforms.
•
See page 32 for IC Pin Function Description.
(Page 27)
ICF-CD855V
27
27
6-12. SCHEMATIC DIAGRAM – MAIN Section (2/2) –
•
See page 28 for IC Block Diagrams.
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
IC402
C448
C449
C922
C921
C923
R917
D908
C915
C914
C917
D906
C913
C912
R906
R918
C905
C903
C902
CNP901
W901
C911
D905
C910
R919
C908
D904
Q906
R911
Q905
D903
R910
Q904
C909
R914
R913
R912
R496
C918
C447
D907
R916
R301
R302
R303
R446
R443
C418
R909
C108
C208
C209
C109
C317
C316
IC301
C201
C101
C102
C202
C203
C103
R101
R102
C121
R202
C221
R201
R203
R103
C309
C310
C311
R204
R308
R309
C314
C315
C313
C312
R207
R208
R108
R107
C206
C207
C106
C107
R120
C110
R220
C210
D103
D203
R223
R123
Q302
R312
R311
R313
C320
Q101
Q201
D101
D201
R111
R211
C112
C212
Q102
Q202
C211
R109
R110
R210
R209
R115
R215
R114
C114
C214
C115
C215
C325
C217
R113
R213
C318
C119
C219
C218
R314
C117
CNP304
D102
D202
C304
C302
BH301
CNP303
R104
R121
R221
J301
SP201
SP101
C327
Q903
C450
Q907
Q909
Q908
R915
R205
JC301
JC302
R105
C323
C322
C319
R310
C111
R214
IC302
C919
R219
R119
C118
R217
R117
C324
C907
C120
C220
Q301
XC61CN2002MR
0.1
470
6.3V
0.01
100
10V
10V
10
50V
1k
M1MA142WAT1
0.01
0.01
0.01
1SS119
470
10V
0.01
100
10k
470
10V
0.01
1000
16V
2P
470
10V
1SS119
0.01
10k
470
10V
MM3Z6V8ST1
2SD2396K
47
MSB1218A-RT1
DA204U
10k
MSD1819A-RT1
0.01
2.2k
4.7k
100
470k
0.01
0.01
MM3Z4V7ST1
1k
1k
1k
1k
10k
1k
1000p
10k
1000p
1000p
470p
470p
0.22
0.1
BD3870FS-E2
1
1
1
1
0.1
0.1
22k
22k
2200p
22k
2200p
22k
22k
22k
2.2
2.2
47
10V
1k
1k
1k
0.01
47
10V
1000p
1000p
4.7k
470k
470k
4.7k
0.1
0.1
0.1
0.1
100k
47
10V
100k
47
10V
MMDL914T1
MMDL914T1
4.7k
4.7k
DTA124EUA
2.2k
2.2k
47k
4.7
50V
50V
MSD1819A-RT1
MSD1819A-RT1
MMDL914T1
MMDL914T1
1k
1k
1000p
1000p
2SD1757
2SD1757
1
47k
22k
22k
47k
2.2k
2.2k
10k
1
1
470p
470p
4.7
50V
50V
1000
6.3V
6.3V
220k
220k
2200p
22
25V
22
25V
0.47
2.2k
1000
6.3V
6.3V
4P
1SS119
1SS119
100
10V
10V
0.01
11P
14P
1k
47k
47k
47
10V
2SD2396K
0.1
MSD1819A-RT1
MUN5113T1
KTC3203Y
100
220k
0
0
220k
4.7
50V
50V
100
10V
10V
0.022
10k
1
10k
LA4627
0.01
1k
1k
0.47
220
220
0.01
0.01
4.7
50V
50V
4.7
50V
50V
DTA123JUA-T106
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
DI
CE
CL
WRQ
DO
RES
MUTE
CLK
DATA
PLL
DRF
SEQ
1
2
3.3V
GND
LCH
RCH
RES
DI
CE
CL
WRQ
DO
DRF
FSEQ
6V
PGND
MUTE
COUNT
LCH
RCH
GND
VT
S-GND
PLL CLK
PLL DATA
PLL CE
R +B
NC
NC
VREF
GND
V LIN
V RIN
SEL R
SEL L
CD LIN
CD RIN
R LIN
R RIN
CAP
LOUT
ROUT
VCC
SI
SC
TNF L
TNF R
BNF R
BOUT R
BNF L
BOUT L
SPL+
SPL-
SPR-
SPR+
(2/2)
LIN
N
C
PRE
G
N
D
POWER
GND
POWER
GND
NC
L
O
UT
STBY
R
IN
DC
P
.P
N
C
R
OU
T
V
C
C
(L-CH)
(R-CH)
POWER AMP
Q102,202
MUTING
POWER
UNIT
(CHASSIS GND)
REGULATOR
+5.6V
REGULATOR
+4V
REGULATOR
CONTROL
REGULATOR
+3.3V
RESET SIGNAL
GENERATOR
RESET
G
V
Q904-906
+6.2V REGULATOR
CONTROL
MUTING
Q101,201
AGC
SURROUND/TONE CONTROL
INPUT SELECT,ELECTRICAL VOLUME,
RADIO
B+ SWITCH
(Page 26)
(Page 21)
(Page 23)
ICF-CD855V
28
28
• Waveforms
– CD Board –
– CD Board –
1
IC701
4
(RF) (CD play mode)
2
IC701
qd
(FE) (CD play mode)
3
IC701
qg
(TE) (CD play mode)
4
IC701
rk
(XOUT) (CD play mode)
1.3 Vp-p
Approx.
300 mVp-p
300 mVp-p
Approx.
250 mVp-p
250 mVp-p
– TUNER Board –
qa
IC2
w;
(XOUT)
1.7 Vp-p
13.3
µ
s
– MAIN Board –
wa
IC401
ua
(XT2)
2.8 Vp-p
30.5
µ
s
2.7 Vp-p
59.1 ns
ws
IC401
ug
(X2) (CD play mode)
3.1 Vp-p
239 ns
• IC Block Diagrams
– CD Board –
– CD Board –
IC701
LC78646E-E
60
59
58
57
56
55
54
53
52
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
SLCO
SLCIST
EFMIN
RF
FDO
SPDO
SLDO
GPDAC
FDO
SPDO
SLDO
GPDAC
CONT4
CONT5
SBCK/CONT6
SBCK/FG
DEFECT
CONT4
CONT5
SBCK/CONT6
SBCK/FG
DEFECT
V/P
V/P
FSEQ
MONI1
MONI2
MONI3
MONI4
MONI5
V/P
FSEQ
MONI1
MONI2
MONI3
MONI4
MONI5
VSS
VDD(3.3V)
69 68 67 66
65 64 63 62 61
VSS
VDD5
DRF
RES
WRQ
DO
DI
CL
CE
79
78 77 76 75 74 73 72 71
LDS
80
LDD
FR
VVDD
PCKIST
VVSS
PDO2
PDO1
CONT1
CONT2
70
CONT3
WRQ
DO
DI
CL
CE
CE
FR
VVDD
PCKIST
VVSS
SBCK/FG
PDO2
PDO1
CONT1-3
SBCK/CONT6
CONT4,5
CONT4,5
DRF
WRQ
DO
DI
CL
CE
LDS
LDD
LDS
LDD
FR
VVDD
PCKIST
VVSS
PDO2
PDO1
CONT1
CONT2
CONT3
RFVDD
RFVSS
FIN1
FIN2
TIN1
TIN2
VREF
FIN1
FIN2
TIN1
TIN2
REFI
REFI
DEFECT
FE
TEC
TE
RFMON
JITTC
ADAVDD
ADAVSS
TDO
SLCO
SLCIST
EFMIN
RF
FIN1
FIN2
TIN1
TIN2
VREF
REFI
FE
TEC
TE
RFMON
JITTC
JITTC
ADAVDD
ADAVSS
ADAVDD
ADAVSS
TDO
DATA
DATACK
LRSY
ASDFIN
ASDACK
ASLRCK
DATA
DATACK
LRSY
RVDD
RVSS
RCHO
LCHO
LVSS
LVDD
ASDFIN
ASDACK
ASLRCK
16MOUT
EFLG
C2F
FSX/16MIN
EFLG
C2F
FSX/16MIN
XVSS
XIN
XOUT
XVDD
16MOUT
XVSS
XIN
XOUT
XVDD
XVSS
XIN
XOUT
XVDD
RVDD
RCHO
RVSS
LVSS
LCHO
LVDD
DATA
DATACK
LRSY
ASDFIN
ASDACK
ASLRCK
16MOUT
EFLG
C2F
FSX/16MIN
XVSS
XIN
XOUT
XVDD
RVDD
RCHO
RVSS
LVSS
LCHO
LVDD
39 40
DOUT
TEST
51
50
49
48
47
46
45
44
43
42
41
+
–
MIX
PH
BH
MONI
CONT
CONT
AGC
+
–
+
–
+
–
+
–
+
–
+
–
LPF
TBAL
TBAL
RAM
TDO
TRACK JUMP
SW
D/A
APC
SUBCODE DECODE CRC
GENERAL PURPOSE
PORTS
8FS
DIGITAL FILTER
1BIT DAC
LPF
ERROR
CORRECTION
AUDIO CD
MONITOR SIGNAL SELECTOR
EXTERNAL
AUDIO IN
AUTO ADJUST
FRAME SYNC
DETECT,PROTECT,INSERT,
EFM DECODE
A/D
CLOCK
GENERATOR
COMMAND
INTERFACE
INTERFACE
SERVO PROCESSOR
LEVEL SET
+
–
S/H
SW
DRF
DRF
ATTENUATION
DEEMPHASIS
INTERPOLATION
MUTE
RUPTURE DEFECT
SLICE LEVEL
CONTROL
CLV,CAV
CONTROL
SERIAL
OUT
AUDIO OUT
RAM
JITTER
DETECT
PLL
VCEC
FE
TE
TEC
RF
RFMON
VREF
SPDO
SLDO
GPDAC
FSEQ
MONI1-5
FDO
LPF
LPF
EQ
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