Marantz SR5012 Service Manual page 31

SCH22_AMP1
51V
Point A
R427 C408
1K2 47/50(KR3)
R436
C412
470K
470P-100V
C520
OPEN
CP401
FL
AGND
SL
AGND
Voltage A
C
AGND
SR
AGND
FR
AGND
SBL
AGND
SBR
CP401
R471 C424
1K2 47/50(KR3)
TO CN5600
R480
C428
470K
470P-100V
C521
OPEN
R514 C440
1K2 47/50(KR3)
R523
C444
470K
470P-100V
C522
OPEN
G4
PAGE 2
AMP B'D 2/2_A1
TO 4G
GND LINE POWER+ LINE POWER- LINE ANALOG AUDIO
AMP B'D 1/2
51.6V
R703
R401 1K2
ZD401 R402 R403
1K2
ZJ5.1A 100K 270(1) R405
270(1)
Q401
D401
KTA1024Y 0.6V
1N4148
Q402 1.1V
R409 R410
C527 KTA1024Y
150K JUMPER
OPEN
C405 C406
R418
220P-J 220P-100V
12K(2)
R420
220K
R428 2
JUMPER
1 3 R429 C409
33K 470P-500V
5 4
Q407
C410 100/50(KOSHIN) C411
HN4A06J R433
470P-500V 220K
R434
3K3(1)
-1.1V
-52V
R437 R717 R438
33K 220 220
C413 R440 R710
2N2-K 470 JUMPER
Q411 Q412
KTC3206Y KTC3206Y
C435
OPEN
-52.8V
R441 R442
1K(1) 1K(1) R443 Point B
D405 D406
270(1)
1N4148 1N4148
-52V
-53V
R704
R444
1K2
ZD404 R446 1K2 R447
ZJ5.1A 100K 270(1) R448
270(1)
Q413
D407
KTA1024Y
1N4148
Q414
R452 R453
C528 KTA1024Y
150K JUMPER
OPEN
C421 C422
220P-J 220P-100V R461
12K(2) R463
220K
R472 2
JUMPER
1 3 R473 C425
33K 470P-500V
5 4
C427
Q408
HN4A06J C426 100/50(KOSHIN) 470P-500V R477
220K
R478
3K3(1)
R481 R718 R482
33K 220 220
C429 R484 R711
2N2-K 470 JUMPER
Q423 Q424
KTC3206Y KTC3206Y
C499
OPEN
R485 R486
1K(1) 1K(1) R487
D411 D412
270(1)
1N4148 1N4148
R705
R491
R488 1K2
ZD407 R490
1K2 270(1)
ZJ5.1A 100K R492
270(1)
Q425
D413
KTA1024Y
1N4148
Q426
R496 R497
C529 KTA1024Y
150K JUMPER
OPEN
C437 C438
220P-J 220P-100V R505
12K(2) R507
220K
R515 2
JUMPER
1 3 R516 C441
33K 470P-500V
5 4
C443
Q419
HN4A06J C442 100/50(KOSHIN) 470P-500V R520
220K
R521
3K3(1)
R524 R719 R525
33K 220 220
C445 R527 R712
2N2-K 470 JUMPER
Q435 Q436
KTC3206Y KTC3206Y
C467
OPEN
R528 R529
1K(1) 1K(1) R530
D417 D418
270(1)
1N4148 1N4148
Point A Point B
DC mode
Voltage A
DIGITAL AUDIO TMDS SIGNAL VIDEO SIGNAL COMPONENT (Y)
56V
0V
OPEN R406
R404 C401
DHPTF1608-115T
C402 100N-K
OPEN CP501
C404
Q403
OPEN
KST5401MTF
R408
R411 680K
OPEN Q404
R415 2SD2560
22(1) D402
R417
1N4148
160K
R413 R414
Q409
10K 10K
R432
KTC3964 ZD402
R423
OPEN
2K7 10K
Q406
D403 KST5551MTF
R424 R425
OPEN Point C1 R426 R724
0R47(2) 0R47(2)
5K6 56K
Point C2
R430 R431
R422
ZD403
0R47(2) 0R47(2)
470 OPEN
R435
D404
560
OPEN
0V
R439 FL
22(1) Q410
2SB1647
C414
OPEN
C415 C416
10/100 10/100
JP416
JUMPER
JP518
OPEN
R445
OPEN
R450
DHPTF1608-115T
C417 C418
OPEN CP502 100N-K
C420
OPEN Q415
KST5401MTF
R451
R454 680K
OPEN Q416
R458 2SD2560
22(1) D408
R460
1N4148
160K
R456 R457
Q421
10K 10K
R476
KTC3964 ZD405
R466
OPEN
10K
2K7
Q418
D409 KST5551MTF
R467 R468
OPEN R469 R725
0R47(2) 0R47(2)
5K6 56K
R474 R475
R465 ZD406
0R47(2) 0R47(2)
OPEN
470
R479
D410
560
OPEN
R483
22(1) Q422 FR
2SB1647
C430
OPEN
C431 C432
10/100 10/100
JP520
JMPER
JP544
OPEN
R489
OPEN
R494
C433 DHPTF1608-115T C434
OPEN CP503 100N-K
C436
Q427
OPEN
KST5401MTF
R495
R498 680K
OPEN Q428
R502 2SD2560
22(1) D414
R504
1N4148
160K
R500 R501
Q433
10K 10K
R519
KTC3964 ZD408
R510
OPEN
10K
2K7
Q430
D415 KST5551MTF
R511 R512
OPEN R513 R726
0R47(2) 0R47(2)
5K6 56K
R517 R518
R509 ZD409 0R47(2) 0R47(2)
OPEN
470
R522
560 D416
OPEN
R526
22(1) Q434 C
2SB1647
C446
OPEN
C447 C448
10/100 10/100
JP468
JUMPER
JP537
OPEN
Measurement condition
Point C
・ Voltage measurement
AC mode
Point C1
No signal
・ Waveform measurement
INPUT: 200mVrms / 1KHz (ANALOG)
Surround mode: MCh Stereo
Point C2
VOL: 70
Speaker load: 8ohms
31
C403 R407
10N-K 10K
R412 15K
R416 22K
R419 22K
R421
22K
Q417
R493
OPEN
OPEN
R551
OPEN
R455 15K
C419
R459 22K OPEN
R462 22K
R449 OPEN
R464
PRF18BF471QB5RB
R508
CHASSIS
OPEN
R536
1K2
R499 15K
R503 22K
R506 22K
G5
PAGE 2
AMP B'D 2/2_M1
TO 5G
PAGE 1
CP402
FL
FR
C
SL
SR
CP402
TO CN4213
CP403
+HIGHB
+HIGHB
+HIGHB
-HIGHB
-HIGHB
-HIGHB
HIGHGND
HIGHGND
HIGHGND
PREGND
R734
R733
CP403
OPEN TO CN4212
OPEN
BKT400
CN404
D458
CN404
D457
0
WIRE_6P
OPEN
THERMALDTETE
DC_DET3
DC_DET4
ASO_DET
RADI_THERMAL
TR_THERMAL
TO N1019