Sony HCD-EC50DC / MHC-EC50DC Service Manual ▷ View online
33
33
HCD-EC50DC
HCD-EC50DC
7-10. PRINTED WIRING BOARD — P-AMP BOARD —
•
See page 23 for Circuit Boards Location.
:Uses unleaded solder.
IC202
R245
D241
R231
R234
R233
Q201
R232
Q241
C209
R211
R213
R207
R201
R215
R203
R205
C201
R217
Q242
R242
C244
R249
R246
R248
C211
R225
C254
R223
R247
R244
R227
C253
R224
R226
C212
Q202
R208
R204
R212
R202
C252
R252
C251
R251
Q244
R253
C205
R228
Q243
R241
R219
C206
TH241
R206
C202
C210
R214
R216
R218
R220
R243
R222
R221
WH101
R237
EP203
JW204
R236
JW207
JW208
JW205
C204
JW203
C203
R238
R235
JW212
JW213
JW210
JW211
JW209
WH102
JW206
P-AMP BOARD
1
5
1
5
K
A
A
E
E
E
E
E
E
C
MAIN
BOARD
CNP202
(Page 29)
D
MAIN
BOARD
CNP201
(Page 29)
(CHASSIS)
1
2
A
B
C
3
4
5
• Semiconductor
Location
Ref. No.
Location
D241
B-4
IC202
C-3
Q201
B-3
Q202
B-4
Q241
B-2
Q242
B-2
Q243
B-2
Q244
C-3
34
34
HCD-EC50DC
HCD-EC50DC
7-11. SCHEMATIC DIAGRAM — P-AMP BOARD —
•
See page 41 for IC Block Diagram.
30
30
R247
D241
Q201
Q202
C205
C206
C201
C202
R238
R237
R235
C203
C204
C253
C254
R201
R207
R208
R211
R212
R213
R214
R215
R216
R217
R218
R219
R220
R222
R223
R224
R225
R226
R227
R228
R231
R232
R233
R234
R241
R242
R244
R245
R246
R248
R249
R251
R252
R253
R236
R204
R206
C251
C252
R203
R205
R221
R202
C209
C210
WH102
WH101
IC202
C212
C211
Q241
Q244
Q242
Q243
C244
470k
MC2838
2SA2026
2SA2026
220p
220p
680p
680p
0.22
2W
0.22
2W
0.22
2W
4.7
50V
4.7
50V
2200p
2200p
10k
100
100
47k
47k
10k
10k
1k
1k
1k
1k
1k
1k
22k
10k
10k
22k
22k
2.2k
2.2k
220
220
10k
10k
10k
10k
100k
2.2k
10k
10k
2.2k
100
100
10k
0.22
2W
47k
10k
0.1
0.1
47k
10k
22k
10k
10p
10p
5P
5P
STK432-070
0.0022
0.0022
2SC3052F-T1-LF
2SA1235TP-1EF
2SA1235TP-1EF
2SC3052F-T1-LF
0.01
35
35
HCD-EC50DC
HCD-EC50DC
7-12. PRINTED WIRING BOARDS — P-AMP-L BOARD, GUARD (B) BOARD, DC JACK BOARD —
•
See page 23 for Circuit Boards Location.
:Uses unleaded solder.
IC201
DC IN 12V
Q903
Q902
Q901
R911
R910
R909
R908
R907
R906
R905
C921
R904
R921
R922
R923
CN902
CNP901
C903
C901
C902
JR201
C237
C238
C228
R319
R324
R320
Q253
R303
R301
R300
R299
R297
R250
R307
R305
R302
Q251
R290
R304
C236
C229
C235
C220
R308
R306
R293
R298
Q252
C230
C221
C222
C232
W204
W205
JW214
W206
C215
C231
C233
C234
C217
T004
T003
J001
D001
F001
CN001
1
10
P-AMP-L BOARD
GUARD(B) BOARD
DC JACK BOARD
F
MAIN
BOARD
CNP205
(Page 29)
E
MAIN
BOARD
CNP204
(Page 29)
1
1
4
E
E
E
5
G
MAIN
BOARD
CN901
(Page 29)
I
MAIN
BOARD
CN002
(Page 29)
1
2
1
1
2
E
E
E
4
FAN
1
2
A
B
C
D
E
3
4
5
6
7
• Semiconductor
Location
Ref. No.
Location
D001
D-4
IC201
C-3
Q251
B-3
Q252
B-4
Q253
B-3
Q901
B-6
Q902
B-6
36
36
HCD-EC50DC
HCD-EC50DC
7-13. SCHEMATIC DIAGRAM — P-AMP-L BOARD, GUARD (B) BOARD, DC JACK BOARD —
30
30
30
30
AMP
C229
R290
C220
R308
R307
R301
R302
R297
R298
R299
R300
R911
R910
R908
R909
R906
R907
R905
R904
R921
R923
C902
R303
R304
R293
R305
R306
R324
R319
R320
IC201
W205
W204
C231
C215
C217
C232
Q253
C238
C233
C234
C235
C236
Q252
Q251
R250
C903
C921
R922
C901
CNP901
Q902
Q901
Q903
M901
CN902
D001
T004
T003
F001
CN001
J001
C228
C222
C221
C230
JR201
0.001
470k
0.001
22k
22k
4.7k
4.7k
2.2k
2.2k
1k
1k
47
47
4.7k
10k
470
4.7k
47k
4.7k
47
220k
47
35V
10k
10k
100k
100k
100k
10
10k
10k
LA4600
5P
4P
47
35V
100
16V
16V
4.7
50V
0.001
2SA1235TP-1EF
0.1
1000
16V
1000
16V
0.001
0.001
2SC3052F
-T1-LF
2SC3052F
-T1-LF
4.7k
47
35V
1
10
4.7
50V
4P
2SA1235TP-1EF
2SC3052F
-T1-LF
2SC3052F
-T1-LF
2P
RK46LF-T2
F-CLAMP
F-CLAMP
T5AL/250V
2P
0.1
1
1
0.001
0
•
See page 40 for IC Block Diagram.
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