Read Sony ICF-CD873L (serv.man2) Service Manual online
ICF-CD873L
7
7
1-6.
SCHEMATIC DIAGRAM – POWER SUPPLY Section –
(Page 5)
Q250
R256
R156
CN305
R381
C380
L280
L180
L380
R380
W708
J301
R255
R155
Q150
C255
Q151
CN306
R157
R257
Q251
CN307
SP301
SP201
SP101
W8
R362
C364
C363
C365
C366
R363
C3
74
R
360
C360
R359
C357
C358
R3
61
C361
C359
C362
IC351
R375
R357
R358
C356
C355
R356
R152
R252
C152
C252
C352
C353
C253
R25
3
C254
C251
C151
C150
R150
R250
C250
R367
IC350
Q354
C154
C153
R153
C354
R154
R254
C155
C909
C910
C908
D902
R903
R902
D901
R901
C351
R354
C901
D904
D903
C902
D905
D906
C903
C904
D907
D908
C906
C905
C912
D909
C913
R907
C916
C915
C914
D910
C917
Q902
R908
R906
Q350
R351
R352
Q351
R251
R151
Q353
R371
R372
Q355
C369
C368
R364
C367
R365
R366
R370
R373
Q352
R369
C370
D351
D350
Q904
R909
Q901
R910
R904
R905
Q903
D911
C918
C919
C920
T901
LF901
F901
C907
C911
CN303
CN304
R355
R353
2SC2412K
1k
1k
6P
47
22
25V
470
47
47
2SC2412K
1000
10V
2SD2396K
4P
220
220
2SD2396K
2P
2.2
0.33
0.33
0.33
0.33
2.2
1
220
220
10V
220
100
10V
1000
p
33k
100
10V
10
0
10V
100
10V
10V
BA5417
1k
10k
15k
4.7
50V
50V
0.047
47k
2.2k
2.2k
1000p
1000p
4.7
50V
100
16V
0.33
2.2
0.33
4.7
50V
50V
4.7
50V
50V
6800p
10k
10k
6800p
0
LA4601N
2SC2412K
0.33
0.33
2.2
0.47
1k
1k
1000
10V
47
35V
0.01
0.47
50V
1SS120-RX
100k
100k
1SS120-RX
100
4.7
16V
16V
100k
10 50V
1SS120-RX
1SS120-RX
0.01
RL202-M11
RL202-M11
0.01
0.01
RL202-M11
RL202-M11
0.01
0.01
0.01
MTZJ-77-5.6A
220
10V
10V
1k
0.01
0.01
470
6.3V
MTZJ-T-77
-6.8A
220
10V
10V
2SD2396K
470
470
2SC2412K
10k
10k
2SC2412K
10k
10k
2SC2412K
1k
10k
DTA124EKA
0.47
0.47
4.7k
0.47
680
1.5k
1k
1k
DTA124EKA
10k
1
50V
DAN202K
DAN202K
DTA124EKA
1
2SD2396K
1
47k
470
2SB1424-T100-R
1SS355-TE-17
470
6.3V
0.01
0.01
0.01
6800
16V
10P
10P
10k
47k
VOL IN
VOL OUT
R CH
GND
L CH
5V
VT
GND
BASS ON
POWER ON
V MUTE
CD ON
BUZZER
AC IN
CD 5V
CD GND
CD 6V
CD GND
AC IN
B OUT
B IN
R
L
G
SW
BASS +
BASS -
SPEAKER
L-CH FRONT
SPEAKER
SPEAKER
MEGA BASS
R-CH FRONT
(HEADPHONE)
SPEAKER ON
SWITCH
SPEAKER ON
SWITCH
Q150,250
POWER AMP
HEADPHONE
Q354,355
SPEAKER
SWITCH DRIVE
IN1
G
N
D
IN
2
STAN
D
B
Y
P.P
.
FILTE
R
V
CC
O
U
T2
G
N
D
O
U
T1
POWER AMP
FOR MEGA BASS
SPEAKER
GND
GND
PRE
PRE
L.F
SW
GND
POWER
VCC
NC
Q352
HEADPHONE MUTE DRIVE
SPEAKER
SWITCH MUTE
MUTE DRIVE
POWER ON
Q350,351
VOICE MUTE
+5V
REGULATOR
REGULATOR
+6V
Q903
CD B+ SWITCH
POWER
TRANSFORMER
D901,902
RECT
RECT
D903,904
RECT
D905-908
T3.15A/250V
FOR FRONT SPEAKER/
MUTE
HEADPHONE
µ
GND
µ
5V
10
µ
H
10
µ
H
4.7
µ
H
(Page 5)
(Page 5)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
Click on the first or last page to see other ICF-CD873L (serv.man2) service manuals if exist.