AOC 55C2U-DVB, Service Manual

Page: 47 / 57

Circuit Diagrams
EQ26 capicity 3500uH±7%,leakage 15uH,turn ratio 30Ts:7Ts
Plug-in mounting magnetic bead/RH3.5*4.7*0.8-T52 Pitch 15mm
5
5
4
4
3
3
2
2
1
D D
C C
B B
A A
HV
AC+
AC-
AGND
AGND
VB-
VB+
V_BUS
VB+ VB-
VB-
V_BUS
PGND
VCC_PFC
V_BUS
12VSB
VCC_SB
12VS
AGND
PGND
AGND
12VS
VCC_SB
VCC_PFC
PGND
PGND
HV
AGND
12V
AGND
12VSB 12VS
5Vsb
AGND
5V2
V-
AGND
V_BUS
VLED+
PGND
VFB
AGND
5V2
VOCP
VLED2
AGND
VLED3
VLED1
PW
M1
12V
V-
VLED+
VCC2
AGND
PGND
VOCP
VLED+
5V2
VCC1
VLED3
VLED1
VLED+.
VLED2
VFB
+5V_Normal
AGND
HV1
VCC3
VCC2
+5V_Standby
+12V
+12V
+12V_NORMAL
+5V_Standby
+5V_Standby +5V_Normal
VCC1
+5V_Normal
AGND
PS-ON
PWM
+5V_Standby
+12V_NORMAL
+12V_NORMAL
AGND
BL_ON
PS-ON
BL_ON
PS-ON
BL_ON
HV1
VCC3
A
A
PWM1
+5V_Normal
PWM
AGND
PWM
BL-ON
DC-DC
Vout=0.6V*(1+R1/R2)
12V TO 5V Power
R1
R2
DC-DC
SOT23
TO MASTER CHIP
12V
SOT23
TO MASTER CHIP
5V
C
103
1000
F
/400
VAC
C
103
1000
F
/400
VAC
C302
100PF/50V NPO 0402
C0402
C302
100PF/50V NPO 0402
C0402
R542
0R 1% 0402
R542
0R 1% 0402
R401 51K 2WS R401 51K 2WS
U303B
LM358
U303B
LM358
IN+
5
IN-
6
OUT1
7
R
365
15R
R
365
15R
R421 10R 1206 R421 10R 1206
R359
10k 0402
R359
10k 0402
R555
51K 1% 0402
R555
51K 1% 0402
R310 10R R310 10R
Q406
2222
SOT-23
Q406
2222
SOT-23
Q307 2222 Q307 2222
R429
5.1K
R0402
R429
5.1K
R0402
U402B
PC817C
GUANGOU
U402B
PC817C
GUANGOU
2
1
R104
2M
Ω
R104
2M
Ω
R342 NC R342 NC
C592
0.1UF/25V X5R 0402
C592
0.1UF/25V X5R 0402
R
372
15R
R
372
15R
R528
10K 0402
R528
10K 0402
+
C
412
1000u
F
/16V
+
C
412
1000u
F
/16V
C409 1uF/50V X7R
C0805
C409 1uF/50V X7R
C0805
C317
0.01uF/50V X7R 0402
C317
0.01uF/50V X7R 0402
U403B
PC817C
GUANGOU
U403B
PC817C
GUANGOU
2
1
R527
100K 0402
R527
100K 0402
R541
6.8K
1% 0402
R541
6.8K
1% 0402
R101
PVR10D561 R101
PVR10D561
L201
15uHD14*12
P7.5
L201
15uHD14*12
P7.5
1
2
D406
NC
DO-214
D406
NC
DO-214
R432
NC
R0402
R432
NC
R0402
R348 470R 0402 R348 470R 0402
Q309
2907
Q309 2907
1
3
2
L508
4.7uH/3A 6*6 2.5mm
L508
4.7uH/3A 6*6 2.
1 2
C557
22uF/6.3V X5R 0805
C557
22uF/6.3V X5R 0805
Q306
2SC2383
T
O126
Q306
2SC2383
T
O126
D302
1N4148
D302
1N4148
R314 20R 1206 R314 20R 1206
D
311
R
S
2M
D
311
R
S
2M
D308 SF59 D308 SF59
U403A
PC817C
GUANGOU
U403A
PC817C
GUANGOU
4
3
D402 1N4148 D402 1N4148
C
311
0
.1u
F
/250
V
X
7
R
1206
C
311
0
.1u
F
/250
V
X
7
R
1206
Q401
70R600 7A 700V
Q401
70R600 7A 700V
1
2
3
R424 47R R1206 R424 47R R1206
R353
1K 0402
R353
1K 0402
R362 20R 1206 R362 20R 1206
R103
2M
Ω
R103
2M
Ω
T5AL250Vac T5AL250Vac
R102
2M
Ω
R102
2M
Ω
+
C591
470uF/16V
+
C591
470uF/16V
C402
100F/50V 0402 NPO
C402
100F/50V 0402 NPO
+
C510
470uF/16V
+
C510
470uF/16V
C506
10uF/16V X5R 0805
C506
10uF/16V X5R 0805
R
333
15R
R
333
15R
C
102
0
.47u
F
275
VAC
C
102
0
.47u
F
275
VAC
Q201
FMV13N60S1
TO220BH
Q201
FMV13N60S1
TO220BH
1
2
3
R306
470R 0805
R306
470R 0805
R
367
15R
R
367
15R
D
305
1
N
4148
D
305
1
N
4148
C
104
1000
F
/400
VAC
C
104
1000
F
/400
VAC
R215
820K
R1206
R215
820K
R1206
R304
10K 0805
R304
10K 0805
R315 20R 1206 R315 20R 1206
L402
L10
L402
L10
1 2
+
C
307
33u
F
/200V
+
C
307
33u
F
/200V
+
C407
47uF/50V
+
C407
47uF/50V
R404
10K 0805
R404
10K 0805
C566
0.22uF/16V X5R 0402
C566
0.22uF/16V X5R 0402
R407 100R 0805 R407 100R 0805
C109
1000F/400VAC
CY10
C109
1000F/400VAC
CY10
R
324
15R
R
324
15R
C215
10uF/25V 1206 X5R
C215
10uF/25V 1206 X5R
R319
4.7K R319
4.7K
R105
2M
Ω
R105
2M
Ω
R205 47R R0805 R205 47R R0805
C
318
0
.1u
F
/25
V
X
7
R
0402
C
318
0
.1u
F
/25
V
X
7
R
0402
R
305
560
Ω
R
305
560
Ω
R
337
2
.2R
R
337
2
.2R
R
329
15R
R
329
15R
L102
T14*8*9 22mH
L102
T14*8*9 22mH
4
3
2
1
R347
5.1K 0402
R347
5.1K 0402
R206
10K
R0805
R206
10K
R0805
C
303
0
.01u
F
/50
V
X
7
R
0402
C
303
0
.01u
F
/50
V
X
7
R
0402
L403
L10
L403
L10
1 2
R
301
560
Ω
R
301
560
Ω
D
312
1
N
4148
D
312
1
N
4148
R436 4.7K
R0402
R436 4.7K
R0402
T301A T301A
3
1 8
10
11
9
L101 L101
4
3
2
1
C208
330F/50V X7R
C208
330F/50V X7R
R208 NC
R1206
R208 NC
R1206
R
309
560
Ω
R
309
560
Ω
R214
470R 0805
R214
470R 0805
R344
3.3K 0402
R344
3.3K 0402
R349
27K 0805
R349
27K 0805
R402 47R 1206 R402 47R 1206
L204
L15
L204
L15
1 2
R
327
15R
R
327
15R
Q305
2SC2383
T
O126
Q305
2SC2383
T
O126
D
307
1
N
4148
D
307
1
N
4148
R106
PVR10D561
R106
PVR10D561
C210
1000F/50V X7R
C0402
C210
1000F/50V X7R
C0402
C398
RS2M
DO-214
C398
RS2M
DO-214
C316
0.01uF/50V X7R 0402
C316
0.01uF/50V X7R 0402
R
336
2
.2R
R
336
2
.2R
R
328
15R
R
328
15R
R
345
470
R
0402
R
345
470
R
0402
R439
10R 1206
R439
10R 1206
C403
0.01uF/50V X7R 0402
C403
0.01uF/50V X7R 0402
R437
1K R0402
R437
1K R0402
R
303
560
Ω
R
303
560
Ω
R588
0R/NC 0402 R588
0R/NC 0402
C417
0.1uF/25V X7R
C0402
C417
0.1uF/25V X7R
C0402
Q504
MMBT3904
Q504
MMBT3904
R
339
2
.2R
R
339
2
.2R
R
334
15R
R
334
15R
D205
10A 600V 10F60UHF
TO220BHD
D205
10A 600V 10F60UHF
TO220BHD
R341 1.5K 0402 R341 1.5K 0402
R423 47R R1206 R423 47R R1206
R431
10k
R0402
R431
10k
R0402
R427
2MR
R1206
R427
2MR
R1206
R
331
15R
R
331
15R
R
323
15R
R
323
15R
D
306
1
N
4148
D
306
1
N
4148
C
101
0
.47u
F
275
VAC
C
101
0
.47u
F
275
VAC
R422
2K
R0805
R422
2K
R0805
R
335
2
.2R
R
335
2
.2R
R
326
15R
R
326
15R
D301 QJP D301 QJP
U401
HFC0500 IC SO-8
U401
HFC0500 IC SO-8
RT
1
G
ND
4
CS
3
GATE
5
V
DD
6
HV
8
FB
2
R
302
560
Ω
R
302
560
Ω
L203
L15
L203
L15
1
2
L301 L301
1
2
C
319
1u
F
/25
V
Y
5
V
0402
C
319
1u
F
/25
V
Y
5
V
0402
R430
5.1k
R0402
R430
5.1k
R0402
R318
0R
R318
0R
R
338
2
.2R
R
338
2
.2R
R
219
16K
R
0402 R
219
16K
R
0402
L401 L401
2
R376
0R/NC 0402
R376
0R/NC 0402
R426 1K
R0402
R426 1K
R0402
R
330
15R
R
330
15R
R
322
15R
R
322
15R
U201 FA5696 SOIC8 U201 FA5696 SOIC8
FB
1
COMP
2
RT
3
OVP
4
IS
5
G
ND
6
OUT
7
VCC
8
C313
0.1uF/25V
X7R 0402
C313
0.1uF/25V
X7R 0402
R378
20R 1206
R378
20R 1206
R435
1K
R0402
R435
1K
R0402
C401
1000PF/1KV Y5P
C401
1000PF/1KV Y5P
R
325
15R
R
325
15R
CN302A 13PIN CN302A 13PIN
1A
2A
3A
4A
5A
6A
7A
8A
9A
10A
11A
12A
13A
R350 75K 0805 R350 75K 0805
Q308
2907
Q308 2907
1
3
2
D403
RS2M
D403
RS2M
R428 10K
R0402
R428 10K
R0402
R403 47R 1206 R403 47R 1206
R361 20R 1206 R361 20R 1206
R222
820K
R1206
R222
820K
R1206
R442
43K
R0402
R442
43K
R0402
R317
0R
R317
0R
+
C
212
100u
F
/450V
+
C
212
100u
F
/450V
R316 100R 0805 R316 100R 0805
C571
0.1UF/25V X5R 0402
C571
0.1UF/25V X5R 0402
R
321
15R
R
321
15R
R
320
15R
R
320
15R
R211 68K
R0402
R211 68K
R0402
R
346
NC
R
346
NC
R218
16K
R0402
R218
16K
R0402
L202
280uH
±
10%,46TS
POT33
L202
280uH
±
10%,46TS
POT33
2 1
Q404
2222
SOT-23
Q404
2222
SOT-23
C314 0.1uF/25V X7R 0402 C314 0.1uF/25V X7R 0402
D313 SF59 D313 SF59
R408
10R 0805
R408
10R 0805
R433
10K
R0402
R433
10K
R0402
R356
0R
R356
0R
R381
470pF/1kV
R381
470pF/1kV
C
211
1000
F
/50
V
X
7R
C
0402 C
211
1000
F
/50
V
X
7R
C
0402
R352
4.7K 0402 R352 4.7K 0402
C416
0.1uF/25V
X7R
C0402
C416
0.1uF/25V
X7R
C0402
R
332
15R
R
332
15R
+
C
413
470u
F
/16V
+
C
413
470u
F
/16V
+
C590
470uF/16V
+
C590
470uF/16V
R
225
0
.2
R
2W
R
225
0
.2
R
2W
Q301
80R650P
8A 800V
Q301
80R650P
8A 800V
1
2
3
Q403 2907
SOT-23
Q403 2907
SOT-23
1
3 2
C410
470pF/1kV
R1206
C410
470pF/1kV
R1206
C203
100F 1KV 1206
C1206
C203
100F 1KV 1206
C1206
R313
10k 1206
R313
10k 1206
R406 470
Ω
R0805
R406 470
Ω
R0805
C543
0.1UF/25V X5R 0402
C543
0.1UF/25V X5R 0402
R507
100K
0402
R507
100K
0402
D105
1N5408/6A10
D105 1N5408/6A10
CN101
6221-02N101-27239201
CN101
6221-02N101-27239201
3
3
1
1
C310
0.01uF/50V X7R 0402
C310
0.01uF/50V X7R 0402
R212
0R
R0402
R212
0R
R0402
R438 10K
R1206
R438 10K
R1206
C415
NC
C415
NC
U303A
LM358
U303A
LM358
IN+
3
IN-
2
OUT1
1
V
CC
8
G
ND
4
C
312
22u
F
/6
.3
V
X
5
R
0805
C
312
22u
F
/6
.3
V
X
5
R
0805
D408 PS20U150FCT
TO220BH
D408 PS20U150FCT
TO220BH
R418 47R 1206 R418 47R 1206
R
366
15R
R
366
15R
D
404
R
S
2M
DO-214
D
404
R
S
2M
DO-214
C205
0.47uF/16V X5R
C0402
C205
0.47uF/16V X5R
C0402
+
C
308
33u
F
/200V
+
C
308
33u
F
/200V
C404
47nF/16V X7R 0402/47PF
C404
47nF/16V X7R 0402/47PF
U302A
PC817C U302A
PC817C
4
3
R
410
0
.33R
2W
R
410
0
.33R
2W
R351 4.3K 0402 R351 4.3K 0402
Q503
MMBT3904
Q503
MMBT3904
R599
4.7K 0402
R599
4.7K 0402
C207
0.01uF/50V X7R
C0402
C207
0.01uF/50V X7R
C0402
R419 10K
R1206
R419 10K
R1206
C
202
0
.22u
F
450
V
DC
CD15
C
202
0
.22u
F
450
V
DC
CD15
R
226
0
.2
R
2W
R
226
0
.2
R
2W
D107
1N5408/6A10
D107
1N5408/6A10
D207 1N4148
SOD123
D207 1N4148
SOD123
R598
4.7K 0402
R598
4.7K 0402
D106
1N5408/6A10
D106
1N5408/6A10
Q304
2SC2383
T
O126 Q304
2SC2383
T
O126
C315
1000F/50V X7R 0402
C315
1000F/50V X7R 0402
R
223
0
.2
R
2W
R
223
0
.2
R
2W
R415 47R 1206 R415 47R 1206
R517
NC R517
NC
C556
0.1UF/25V
X5R 0402
C556
0.1UF/25V
X5R 0402
R213
68K
R0402
R213
68K
R0402
CN203
15PIN
CN203
15PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
C305
0.1uF/25V X7R 0402
C305
0.1uF/25V X7R 0402
C
323
0
.1u
F
/250
V
X
7
R
1206
C
323
0
.1u
F
/250
V
X
7
R
1206
R373
1K 0402
R373
1K 0402
C209
0.1uF/25V X7R 0402
C209
0.1uF/25V X7R 0402
H403 H403
1
2
3
R364
20R 1206
R364
20R 1206
R434
10K
R0402
R434
10K
R0402 R
370
15R
R
370
15R
Q512
ME2325
Q512
ME2325
1
3 2
R358
100K 1206
R358
100K 1206
R221
820K
R1206
R221
820K
R1206
R375
4.7K 0402
R375
4.7K 0402
D410
RS07M
D410
RS07M
R441
10K 0805
R441
10K 0805
R377
2MR
R1206
R377
2MR
R1206
T401B
EQ25
EQ25
T401B
EQ25
EQ25
6
5
C
301
2
.2n
F
/400
V
dc
C
301
2
.2n
F
/400
V
dc
U404
TL431
U404
TL431
1
3
2
R
363
15R
R
363
15R
R
340
2
.2R
R
340
2
.2R
R224
820K
R1206
R224
820K
R1206
C558 33pF/6.3V X5R 0402 C558 33pF/6.3V X5R 0402
R
368
15R
R
368
15R
R357
5.1M 1206
R357
5.1M 1206
+
C
322
470u
F
/16V
+
C
322
470u
F
/16V
R500
10K 0402
R500
10K 0402
C509
0.1UF/25V X5R 0402
C509
0.1UF/25V X5R 0402
U302B
PC817C
U302B
PC817C
2 1
D409
RS07M D409
RS07M
D303SF59 D303SF59
C565
0.22uF/16V X5R 0402
C565
0.22uF/16V X5R 0402
R575
100K
0402
R575
100K
0402
D
309
1
N
4148
D
309
1
N
4148
R440
0R
R440
0R
D405
18V
SOD123
D405
18V
SOD123
C
201
1u
F
/450V
CD15
C
201
1u
F
/450V
CD15
L405 L405
1 2
C406
0.1uF/50V X7R 1206
C406
0.1uF/50V X7R 1206
Q513
ME2325
Q513
ME2325
1
3 2
R311
NC
R1206 R311
NC
R1206
D314
1N4148
D314
1N4148
U512
MP2225
U512
MP2225
FB
8
BST
5
SW
3
VIN
2
6
EN/SYNC
VCC
7
4
GND
AGND
1
C
324
22u
F
/6
.3
V
X
5
R
0805
C
324
22u
F
/6
.3
V
X
5
R
0805
C
321
0
.01u
F
/50
V
X
7
R
0402
C
321
0
.01u
F
/50
V
X
7
R
0402
R210 10R
R0805
R210 10R
R0805
R220
820K
R1206
R220
820K
R1206
R
360
10
K
0402
R
360
10
K
0402
Q202
NC
SOT-23 Q202
NC
SOT-23
1
3
2
L404 L404
1 2
R425
NC R425
NC
R354
2K
0402
R354
2K
0402
+
C405 47uF/50V
+
C405 47uF/50V
R307
0.33
Ω
2WS
R307
0.33
Ω
2WS
D407 PS20U150FCT
TO220BH
D407 PS20U150FCT
TO220BH
R108
0R R0805
R108
0R R0805
T401A
EQ25
T401A
EQ25
3
1 8
10
11
9
C561
10uF/16V X5R 0805
C561
10uF/16V X5R 0805
R216
820K
R1206
R216
820K
R1206
F101
T5AH250Vac
F101
T5AH250Vac
t
R107 2.5
Ω
6A
±
20% NTC
NTC7.5_NEW
t
R107 2.5
Ω
6A
±
20% NTC
NTC7.5_NEW
U301
HFC0500 IC SO-8
U301
HFC0500 IC SO-8
RT
1
G
ND
4
CS
3
GATE
5
V
DD
6
HV
8
FB
2
R
371
15R
R
371
15R
C304
0.1uF/25V
X7R 0402
C304
0.1uF/25V
X7R 0402
R355 5.1M 1206 R355 5.1M 1206
R374
1K 0402
R374
1K 0402
C108 471/400VAC CY10 C108 471/400VAC CY10
R369 2K 0402 R369 2K 0402
R
217
10
K
0402
R
217
10
K
0402
+
C
411
1000u
F
/16V
+
C
411
1000u
F
/16V
R312
10k 1206
R312
10k 1206
U402A
PC817C
U402A
PC817C
4
3
D401
RL207
D401
RL207
D104
1N5408/6A10
D104
1N5408/6A10
C507
0.1UF/25V X5R 0402
C507
0.1UF/25V X5R 0402
C214
10uF/25V 1206 X5R
C214
10uF/25V 1206 X5R
R209
NC
R1206
R209
NC
R1206
C
206
0
.47u
F
/16
V
X
5R
C0402
C
206
0
.47u
F
/16
V
X
5R
C0402
R
343
15R
R
343
15R
C309
100PF/1KV 1206
C1206
C309
100PF/1KV 1206
C1206
R30847R 0805 R30847R 0805
discharge needle
discharge needle
discharge needle
discharge needle
discharge needle
discharge needle
discharge needle
discharge needle
discharge needle
discharge needle
discharge needle
discharge needle
Plug-in mounting magnetic bead/RH3.5*10*0.8-T/II/Pitch 15mm
Plug-in mounting magnetic bead/RH3.5*10*0.8-T/II/Pitch 15mm
Plug-in mounting magnetic bead/RH3.5*4.7*0.8-T52 Pitch 15mm
Plug-in mounting magnetic bead/RH3.5*4.7*0.8-T52 Pitch 15mm
Plug-in mounting magnetic bead/RH3.5*4.7*0.8-T52 Pitch 15mm
Plug-in mounting magnetic bead/RH3.5*4.7*0.8-T52 Pitch 15mm
EQ38 capicity 470uH±7%,leakage 12uH,turn ratio 24Ts:16Ts
Horizontal square connectors (VH-3 lack 1plane-bending) pitch:7.5mm
H
close to
close to
Plug-in mounting magnetic bead/RH3.5*10*0.8-T/II/Pitch 15mm
Power board circuit diagram
46