Sony ICF-CD873L (serv.man2) Service Manual ▷ View online
SERVICE MANUAL
Ver 1.2 2002.11
SUPPLEMENT-1
Subject: Printed Wiring Boards and Mechanism Parts Modification
Accompanying Power Transformer (T901) Modification
Accompanying Power Transformer (T901) Modification
(ECN-TRA00668)
AEP Model
UK Model
ICF-CD873L
•
NEW/FORMER TYPE DISCRIMINATION
Note:
When replacing the cabinet (upper) assy, the cabinet (lower) assy, the cabinet, the power transformer (T901), the bracket, and the POWER board
need to be replaced at the same time. In this case, use New type parts.
need to be replaced at the same time. In this case, use New type parts.
Note:
When replacing the power transformer (T901), use the one according to each type.
Part No.
New type
1-435-597-11
Former type
1-449-200-11
Former type: 1-673-799-11, -12, -13
New type
New type
: 1-673-799-14
– POWER BOARD (Component Side) –
9-927-129-81
2
ICF-CD873L
1.
DIAGRAMS
1-1.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µF unless otherwise noted. pF: µµF
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.
• C : panel designation.
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
W
: indicates side identified with part number.
•
z
: Through hole.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Signal path.
F
: FM
f
: AM
J
: CD
• A : B+ Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : AM
[
] : CD PLAY
• 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.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
Replace only with part number specified.
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
ICF-CD873L
3
3
S424
RV302
MEGA BASS
1
2
6
7
CN302
-1
-2
RV301
VOLUME
R486
R483
R487
R484
R488
R485
D422
D419
D423
D420
D424
D421
D419 - 424
(LCD BACK LIGHT)
M
M571
(SPINDLE)
M
M570
(SLED)
S570
(LIMIT)
1
7
BH570
C468
C471
C465
C470
C470
R18
L5
C31
C27
C25
C30
R17
C29
R20
C472
W8
L403
C512
C513
C513
R542
C537
C537
R507
C507
C508
R508
R508
C509
R511
R513
R510
R512
R498
R469
R476
C541
R546
R547
R547
C542
C511
C506
R506
C504
C503
C502
C501
C501
R505
C534
C530
C528
C532
R533
C531
C528
C532
R533
C531
C526
C525
C527
R531
R532
C529
R530
R529
R503
R501
R504
C65
C23
IC1
C32
R19
C20
R15
R14
R12
C464
C3
R3
D3
K
A
KA
R13
E C B
Q2
R10
C4
R2
C16
C1
D2
R1
C22
R16
R7
C50
IC50
C53
R50
C54
C55
R52
R51
R8
C13
R11
C14
C15
C10
C36
C12
R6
D4
C66
R4
R9
C6
R5
Q1
B C E
R55
R54
R53
R57
C58
C57
C56
C64
C62
E C B
Q50
C59
R59
R60
K
A/K
A
D1
C7
C521
C520
R516
R518
R518
C518
C519
C519
R517
R534
C516
C517
IC501
C533
R536
R538
C522
R523
R520
R502
R525
R521
R519
R524
C523
R535
R537
R539
R541
C564
C536
C562
C561
R540
C563
C568
R554
C565
C566
C567
R553
E C B
Q501
R555
R556
C555
R559
R558
C554
R557
R551
R550
C552
R549
C553
R552
IC502
IC503
R548
C548
C547
C547
C550
C549
C412
R436
R435
R434
R433
R432
E C B
Q401
KA
D413
KA
D412
R454
R455
R453
R458
R459
R460
R461
R462
R463
R464
R465
R466
R467
R468
R401
R402
R403
R404
R405
R406
R407
R408
R409
R410
R416
R417
R418
R450
R456
R451
R457
C427
IC401
C421
C420
R444
R443
R441
C437
C410
C407
C408
R431
R430
R427
C409
R429
R428
R426
R489
R425
R424
C444
R490
C445
R423
Q405
B C E
Q403
R440
R471
C438
R411
R412
R413
R414
C401
C402
C403
R421
C402
C403
R421
R474
E C B
Q602
E C B
Q601
R323
E C B
Q320
R120
C322
R122
C323
IC320
C556
R102
R101
R101
C101
R104
R103
R103
C102
R106
R105
R105
R302
R202
R201
R201
C551
C201
R204
R203
C202
R206
R205
R207
C203
R303
C301
C301
C204
R208
R208
A
K
D321
K
R320
R321
C321
R322
E C B
Q321
R472
R482
R439
R220
C220
E C B
Q220
C423
R449
R448
R452
R447
C425
R445
E C B
Q402
R446
C426
C433
R56
C61
C9
C2
C5
L50
R514
C515
R544
C543
R543
C560
IC301
R420
R419
R108
C104
C104
C105
R480
R470
R481
R209
R109
R110
R210
L302
C205
C557
D414
KA
C539
R545
C538
C436
C467
B C E
Q406
K A
D417
Q404
B C E
B C E
C544
C545
C67
C411
R473
R477
R478
R478
R479
C413
R442
K A
D320
E C B
Q120
C120
C324
R221
R324
R325
R222
C559
D416
AK B C E
0407
1
15
16
30
1
8
9
16
8
5
1
4
1
12
13
24
25
36
37
48
1
24
25
40
41
64
65
80
1
7
8
14
15
22
21
28
1
20
21
40
41
60
61
80
1
4
8
5
1
7
8
14
CN401
C26
+
+
C28
+
C24
CF1
T1
D403
D404
D401
D402
+
+
C19
C21
+
C18
CF3
RV1
L4
AM OSC
S423
CT2
CT3
C60
C63
+
CT4
CT1
+
C51
C17
+
+
+
C52
L2
FM
OSC
L1
FM RF
CF2
C505
+
+
C510
+
C514
+
C535
+
C540
L501
+
C524
Q502
E C B
1
CN501
15
2
15
16
RV502
RV501
L503
X501
BPF1
IC402
C434
L504
C432
+
L401
D415
C429
+
+
C435
CT401
X402
X401
L502
D501
FB501
+
+
C546
C302
+
C558
CN502
1
6
+
C121
C320
+
+
C221
CN301
1
2
6
7
10
1
W707
10
1
W706
L301
+
C303
1
24
LCD401 LIQUID CRYSTAL DISPLAY
1
2
9
10
D407
L3-1
(MW)
L3-2
(LW)
L3
MW/LW
FERRITE-ROD ANTENNA
X50
L505
(COMPONENT SIDE)
VOLUME BOARD
(COMPONENT SIDE)
MAIN BOARD
(CONDUCTOR SIDE)
MAIN BOARD
(CONDUCTOR SIDE)
VOLUME BOARD
(COMPONENT SIDE)
MOTOR BOARD
(CONDUCTOR SIDE)
MOTOR BOARD
POWER
BOARD
CN303
A
POWER
BOARD
CN304
B
(14)
14
1-673-800-
(14)
14
1-673-804-
(14)
14
1-673-800-
(14)
14
1-673-804-
OPTICAL
PICK-UP
PICK-UP
(KSS-213B)
TP401
(X2)
TP
GND
TP (+15)
TP503
(RF)
TP504
(VREF)
TP13
(FM IN GND)
TP12
(FM IN)
TP50
(VT GND)
TP53
(VT)
TP8
TP7
POWER BOARD
W8
C
LOW
HIGH
BRIGHTNESS
S423
(1/3)
(3/3)
(2/3)
6
5
1
4
D4
BP
(FEO)
BP
(CD TEST MANUAL)
1
2
1
2
PUSH SWITCH
BOARD
S424
CD LID
OPEN/CLOSE
DET
(14)
14
1-673-802-
(14)
14
1-673-803-
3
2
1
1
2
3
LED BOARD
ANT1
FM WIRE
ANTENNA
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J
K
L
R107
C103
R121
R438 C439
C424
JW571
JW570
JW573
JW572
(14)
14
1-673-798-
(14)
14
1-673-798-
TO KEY BOARD
R58 E C B
Q51
L51
1
3
C428
BP
(CD TEST AUTO)
R475
(AEP)
(UK)
C473
D1
L-12
D2
J-12
D3
J-12
D4
K-13
D320
J-6
D321
J-6
D401
H-11
D402
H-11
D403
H-12
D404
H-12
D412
G-9
D413
G-9
D414
I-8
D415
I-9
D416
H-6
D417
H-6
D419
H-15
D420
H-14
D421
H-14
D422
H-16
D423
H-15
D424
H-14
D501
I-8
IC1
J-12
IC50
K-12
IC301
J-7
IC320
K-6
IC401
H-7
IC402
H-9
IC501
J-10
IC502
I-9
IC503
K-8
Q1
L-13
Q2
K-13
Q50
L-12
Q51
L-12
Q120
J-6
Q220
J-6
Q320
J-6
Q321
J-6
Q401
H-9
Q402
H-8
Q403
I-6
Q404
I-6
Q405
I-6
Q406
H-6
Q407
I-6
Q501
K-9
Q502
K-2
1-2.
PRINTED WIRING BOARDS – MAIN Section –
• Semiconductor
Location
Ref. No.
Location
(Page 6)
(Page
6)
(Page
6)
ICF-CD873L
4
4
BP
D
413
D
412
S424
CN401
R401
R
4
0
2
R
4
0
3
R
4
0
4
R
4
0
5
R
4
0
6
R
4
0
7
R
4
0
8
R
4
0
9
R
4
1
0
R
4
1
1
R
4
1
2
R
4
1
3
R
4
1
4
C444
C
4
1
0
C
4
0
9
C
4
0
8
C
4
0
7
C445
D414
C424
R
4
3
3
R
4
3
4
R
4
3
5
D416
L401
R443
R441
R
4
4
6
X402
Q401
C423
C
4
2
0
C
4
2
1
X
4
0
1
C436
C437
C413
R442
R436
C439
C435
C467
C
4
2
6
C
4
2
5
D415
R
4
3
2
R444
R469
TP401
Q402
C434
R440
R438
R439
D401
D402
D403
D404
C
4
7
0
C
4
6
5
C
4
7
3
C468
R456
R455
R454
R453
R452
C427
R
4
4
7
R
4
4
8
R
4
4
9
R
4
5
0
R
4
5
1
R
4
8
2
R
4
4
5
D417
R416
R417
R418
R419
R420
R421
C402
C403
C401
C429
R424
R425
R423
R477
R478
R479
R489
R490
R426
R427
R428
R429
R431
C432
R480
C433
R430
BP
C
4
1
1
Q407
R486
R487
R488
Q406
R472
C438
D419
D420
D421
R485
R484
R483
D422
D423
D424
C428
R476
R474
C464
R471
R475
L403
Q404
Q405
Q403
R473
R541
CT401
R549
C553
R557
R559
C557
IC503
C511
C514
C513
C512
C510
R511
C509
R513
R512
C515
R514
R510
C507
R507
R506
C505
C
5
0
3
C
5
0
4
C
5
0
2
R
5
0
5
BP
RV502
R502
R504
R503
C535
C534
C517
C525
R519
R520
R521
R516
C521
R517
R518
C522
C519
C518
R525
R530
R532
C527
R531
C530
C528
C529
R533
C531
R501
R535
R536
R537
R538
R539
C524
Q502
R523
R552
C555
C558
C568
IC401
LCD401
R498
CN501
IC501
R457
C471
C
5
2
0
C516
R550
TP503
C506
C501
R529
C526
TP504
Q501
R534
S423
R551
C552
C554
R558
R481
IC402
R467
R466
R465
R464
R463
R462
R461
R460
R459
R458
R468
C533
R470
RV501
C523
C532
R524
L501
C556
R556
R555
R508
C508
1SS355-TE-17
1SS355-TE-17
10P
1k
1
k
1
k
1
k
1
k
1
k
1
k
1
k
1
k
1
k
1
0
k
1
0
k
1
0
k
1
0
k
1000p
1
0
0
p
0
.0
1
1
0
0
p
0
.0
1
1000p
1SS355-TE-17
18p
1
k
1
k
1
k
1SS355-TE-17
1k
100k
1
0
k
4.194MHz
2SD596
18p
2
2
p
2
7
p
3
2
.7
6
8
K
H
z
0.01
0.01
100p
10k
1k
0.022
100
10V
10V
10p
0
.0
1
0
.0
1
1SS120RX
1
k
1k
470k
2SD596
0.47
22k
47k
47k
1SS120RX
1SS120RX
1SS120RX
1SS120RX
1
0
0
p
1
0
0
p
1
0
0
p
100p
1k
1k
1k
1k
1k
0.01
4
7
0
k
4
7
0
k
4
7
0
k
4
7
0
k
4
7
0
k
2
2
0
k
1
0
k
1SS355-TE-17
1k
1k
1k
15k
15k
15k
0.1
0.1
0.1
330 6.3V
1k
1k
1k
10k
10k
10k
1k
1k
470
1k
1k
100
1k
470
6.3V
10k
0.1
1k
1
0
0
p
DTA124EKA
100
100
100
DTA124EKA
1k
0.01
TLYE262A
TLYE262A
TLYE262A
470
470
470
SLR-342-MCT31
SLR-342-MCT31
SLR-342-MCT31
0.01
10k
10k
0.01
1k
10k
2SC2412K
2SC2412K
2SC2412K
100
10k
10p
100k
0.1
22k
47k
0.1
BA6196FP
0.01
100
10V
10V
0.1
0.01
4.7
50V
50V
47k
0.1
22k
100k
47p
150k
100k
0.01
470k
100k
4.7
50V
50V
0
.1
0
.1
0
.1
4
7
0
k
22k
4.7k
10k
10k
100
10V
10V
0.1
0.047
0.01
22k
22k
22k
15k
2p
10k
4.7k
10p
0.047
0.01
820k
220k
100k
0.047
470k
0.1
47p
0.022
330k
0.01
2.2k
47k
47k
47k
47k
100k
47
16V
2SB1013
22
10k
0.022
100
10V
10V
0.01
F17-3B9
10k
16P
CXA1782BQ
1k
100p
0
.2
2
0.01
10k
0.047
1000p
150k
4700p
2SC2412K
82k
1k
0.1
1000p
47k
1k
PST600L-T
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1000p
1k
22k
1000p
1000p
47k
0.1
22k
10k
82k
10p
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A1
A1
A2
A2
A3
A3
A4
A4
A5
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
B1
B1
B2
B2
B3
B3
B4
B4
D1
D2
D3
E1
E2
E3
E4
G1
G2
G3
G4
G1
G2
G3
G4
I2
I4
H1
H2
H3
H4
J1
J2
J3
I3
F2
F3
F1
I1
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SO(NC)
RESET
KEYRET4
COLOR
X
2
X
1
CK
SHIFT
X
T
2
X
T
1
V
D
D
A
M
U
T
V
M
U
T
N
A
R
R
E
S
E
T
B
U
Z
Z
E
R
S
T
S
I
S
O
A
U
/M
A
S
C
O
R
C
IN
S
E
N
S
S
Q
S
I
N
C
COM0
COM1
COM2
COM(NC)
BIAS
VLC0
VLC1
VLC2
CD ADJ
CLOCK
XTL
DATA
VSS
X RESET
POWER ON
CD ON
R LAT
AC IN
CK
DATA
BASS ON
SEG12
S
E
G
1
3
S
E
G
1
4
S
E
G
1
5
S
E
G
16
S
E
G
1
7
S
E
G
1
8
S
E
G
1
9
S
E
G
2
0
S
E
G
2
1
S
2
3
(N
C
)
S
2
2
(N
C
)
K
S
0
K
S
1
K
S
2
V
E
R
S
IO
N
1
V
E
R
S
IO
N
2
A
L
A
R
M
K
S
3
VC
VCC
E
D
A
B
C
F
GND
LD
VR
PD
FEBIAS
F
E
EI
VEE
TEO
LPI
TET
ATSC
TZC
TDFCT
VC
FE
O
FE
I
F
D
FC
T
FG
Q
F
L
B
FE
O
F
E M
S
R
C
H
F
S
E
T
T
A
M
T
G
U
T
G
2
SENS
C,OUT
DATA
XLT
CLK
VCC
ISTE
SL O
SL N
SL P
TA O
P
H
D
2
P
H
D
1
R
F M
R
F O
R
F
I
C
P
C
B
C
C
1
C
C
2
F
O
K
P
H
D
L
O
G
N
D
T
+
T
-
T
IN
V
R
EF
V
C
C
V
C
C
F
+
F
-
S
P
IN
S
L
-
S
L
+
S
L
IN
M
U
T
E
G
N
D
G
N
D
KR0
KS3
KR1
KS2
KR2
KS1
KR3
KS0
KR4
GND
F +
T +
T -
F -
FOCUS/TRACKING
COIL DRIVE,
SPINDLE/SLED
MOTOR DRIVE
RF AMP,
FOCUS/TRACKING
SERVO,
SLED SERVO
BRIGHTNESS
HIGH
LOW
LED DRIVE
Q403-405
D422-424
(LCD BACK LIGHT)
(LCD BACK LIGHT)
D419-421
MEGA BASS
ON DRIVE
MUTING
CONTROL
SWITCH
RESET SIGNAL
GENERATOR
SYSTEM CONTROLLER
Q401,402
SHIFT
CLOCK
XRST
CONTROL
CONTROL
AUTOMATIC
POWER
E
D
A
B
C
F
DETECTOR
LASER DIODE
LD
PD
(TRACKING)
(FOCUS)
2-AXIS
DEVICE
(CD LID OPEN/CLOSE DET)
LIQUID CRYSTAL DISPLAY
TP(+5V)
TP GND
(SHIELD)
S
P
+
S
P
-
(X2)
(1/2)
BALANCE
E-F
(AEP) (UK)
DOOR IN
KEYRET0
KEYRET1
KEYRET2
KEYRET3
mPD753012AGC-
10
µH
10
µH
4.7
µH
1-3.
SCHEMATIC DIAGRAM – MAIN Section (1/2) –
(Page 5)
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
line with mark 0 are critical for safety.
Replace only with part number specified.
