Schematic Diagram - Amp Board - Sony UDA-1 Service Manual

5-12. SCHEMATIC DIAGRAM - AMP Board -

1 2 3
AMP BOARD
A
(Page 41)
CN207
4P
CL257
>08S
R 1
CL256
GND 2
SPTM CL255
GND 3
BOARD
CL254
CN700
L 4
B
C
CN201
F202
6P
(Page 46)
4A 250V
CL258
R1(Hi TAP) 1
>09S NC 2 CL210 CL211
CL259
R1(Lo Tap) 3
T001 CL260
MAIN POWER Center 4
CL261 F203
TRANSFORMER
R1(Lo Tap) 5 4A 250V
D
CL262
R1(Hi Tap) 6
CL212 CL213
E
(Page 31)
CN213
2P
>01S
DCDC GND 2
DIGITAL DCDC GND 1 F200
BOARD 1A 250V
CN103
F
CL200 CL206
G F201
1A 250V
CL201 CL207
H D200
DA2J10100L
ET200
(CHASSIS)
D201
DA2J10100L
(Page 41)
CN202
4P
I CL203
>10S HP_DETECT 1
CL204
HP_R 2
HP
BOARD HP_GND 3
CL205
CN600
HP_L 4
CN212
7P
CL268
(Page 39)
L 7
J CL223
GND 6
>11S CL239
R 5
CL238
DAC GND 4
CL237
BOARD
–7V 3
CN401
CL236
GND 2
CL235
+7V 1
CN205
K
6P
(Page 39)
CL228
R1 IN 6
CL231 CL227
>12S
GND 5
CL226
L1 IN 4
DAC CL229
GND 3
BOARD
CN403
NC 2
CL224
LINE_MUTE 1
L
M
R210
CL225 0
R215
0
UDA-1
• See page 48 for IC Block Diagrams.
4 5 6 7 8
R222
33
RY201
D221
D220 BAV99-215
DA2J10100L
C242
10
0
50V
0.7
Q201 R224 R223 R225 R226
2PD601ART 47k 2.2k 22k 22k
RELAY DRIVE
D218
1
C228 D5SBA60-F
0.1
~
CL270
4 3
– +
~
C229
0.1 CL271
2 C240
6800
50V
C241
6800
50V
C213
330
25V
CL272
D231
1SR154-400TE-25
D232
1SR154-400TE-25
D202 D207
1SR154-400TE-25 1SR154-400TE-25
C201 D204 D209
1 1SR154-400TE-25 1SR154-400TE-25
C202
1
IC203
+7V REGULATOR
IC203
KIA7807API-U/PF
CL214 CL265
13.4 6.9
I O
1 2
COM
C205 C221 3 C230 C236
1000 1 470p 10
25V 50V
CL264
C206 C222 C231 C237
1000 1 470p 10
3
25V 50V
-13.7 G -6.9
I O
1 2
CL222 CL266
IC204
-7V REGULATOR
IC204
KIA7907PI
R208
680
1/2W
R220
RY200 R212
680 0
-2
1/2W
-1
R213
R221 0
+ –
680
1/2W
D216
DA2J10100L
R209
680
1/2W
Q200
2PD601ART
13.5 RELAY DRIVE
R207
2.2k
0
R203 R204
100 47k
9 10 11 12
0 0
0 -23.9 0
Q202 Q205
2SA2154MFV(TL3S 2SA2154MFV(TL3S
0 0
DC DETECT DC DETECT
R227 C244 C245
10 10
47k
0 -23.9 0 -23.9
Q203 Q206
R230 2SA2154MFV(TL3S R235 2SA2154MFV(TL3S
100k 100k
DC DETECT DC DETECT
C243 R228 R229 R231 R233 R236 R214
10 100k 100k 100k 100k 100k 10k
50V
Q208
C355 2PD601ART
220
2.4 PROTECT SWITCH
10V
24
1 V+ -23.8
R356 R355
2 NC
1k 15k
0
1/2W
3
OUTPUT -24
-24
4 V–
24
R350
5 NC(+)
R359 C357 C356 15k
47k 0.1 0.1
6
NC
1/2W
7
GND
-4.1
8 MUTE
0
9 Vin –
0
10
Vin +
R358
11 R353
1k NC
1k
1/2W
C208 1/2W
100p
IC351
POWER AMP
R357 R352 IC351
C354
22 100k 100k LM2876TF
Q213, 214, 216
1/2W 1/2W
100V MUTING CONTROL
SWITCH
R260 R205
C350
10k 2.2k
22
100V
R200
6.9
10k
6.9
Q214 R261
LSAR523UBFS8TL 10k
-6.9 3.1 LSAR523UBFS8TL
Q209
2SD2114KT146
R202
0 MUTING
2.2k
-6.9
0
R251 R256
R243
2.2k 100k
100k R264
6.9
1/2W 47k
0
R244
C200
100k R252 Q216
1/2W 2.2k 47 2PD601ART
-6.9
Q210
2SD2114KT146
0
MUTING
R248
C252 R211 R262
2.2k
22 10k 100k
100V
R240
2.2k
RY203
C256
22
-2
100V
-1
– +
D223
DA2J10100L
Q207
2PD601ART
13.5 RELAY DRIVE
0
R238
100
R239
47k
37 37
13 14 15 16 17
-23.9
D208
DA2J10100L
R242
TH200
100
JL202
JL201
R206 C214
2.2k 0.1
JL203
IC350
POWER AMP
C351 IC350
220 LM2876TF
10V
24
1 V+
2 NC
R241 C246
0
100k 2.2
3
OUTPUT
50V
-24
4 V–
24
5 NC(+)
R351 R354 C353 C352
1k 47k 0.1 0.1
6
NC
1/2W 1/2W
7 GND
-4.1
8 MUTE
0
9 Vin –
0
10
Vin +
11
NC
C207
100p
Q217 - 219
MUTING CONTROL
SWITCH
C212 R366 R363 C359
0.001 10k 2.2k 0.001
Q218
R360
6.9 LSAR523UBFS8TL
10k
R201 R361
100k 6.9 100k
R367
Q213
10k
-6.9 3.1
3.2 3.2
Q217
Q219
LSAR523UBFS8TL
6.9 0
2PD601ART
R247 R362
0
2.2k 1k
R369
47k
R365
100k
C251
22
100V
C358
22
R368 R364
100k 10k
C270 C261 R281 C271
4.7k
10 100 10
1/2W
50V 16V 50V
C276
4.7
50V
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
IC206
TONE CONTROL,
ELECTRICAL VOLUME
IC206
NJW1194
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
C218
0.001
C217
220p
C277
4.7
50V
C269
C257 C262
C216
22 100 10
50V R282 220p
100V 16V
4.7k
1/2W
Note: When the IC350 and IC351 on the AMP board is replaced, refer to
"NOTE OF REPLACING THE IC350 AND IC351 ON THE AMP
BOARD AND THE COMPLETE AMP BOARD" on page 3.
UDA-1
18 19
CN215
R283 15P
47k
CL240
1 XAMUTE
R284 100 CL241
2 CS
R285 100 CL242
3 COM_CLK
R286 100 CL243
4 COM_DATA (Page 33)
CL244
5 PROTECT
R287 2.2k CL245
>04S
6 SP_RY
R288 2.2k CL246
7 HP_RY
DIGITAL
R289 100 CL247
8 HP_DET
BOARD
CL248
(3/5)
9 TEMP1
CN303
CL249
10 A_SEL2
CL250
11 A_SEL1
CL251
12 D3.3V
CL252
13 DGND
CL253
14 SP_LEVEL (NOT USED)
CL269
15 XLINE_OUT_MUTE
R290
47k