Schematic Diagram - Front Rear Amp Board - Sony HD-FLX9W Service Manual

8-31. SCHEMATIC DIAGRAM – FRONT REAR AMP Board –
Q Q
3 7 6 3 1 5 1 5 0
NO801
7P
FRONT R
FRONT GND
FRONT L
FRONT GND
REAR R
REAR GND
(Page 56)
REAR L
T E
L 1 3 9 4 2 2 9 6 5 1 3
w w w
HCD-FLX9W
R454
C451 47k
10 R451
50V 1k
C453 R411
100p 100
R419 R428
C452 R452 R453 10k 15k
470p 47k 470
R412 D421
100 1SS133T
R420 C407 C408
C454 1 22 22
47 50V 50V
C420
10V
1000p
C404
47
10V
R418 R417
C402 R402 R403 82k 100k
470p 47k 470
C401 Q419
10 R401 C403 R404 2SC2785
50V 1k 100p 47k
Q420
2SC2785
TH401
C481
10 R481
50V 1k
C483
100p
R470
R484 1
47k
C482 R482 R483
470p 47k 680
C484
47
C470 R469
10V
1000p 10k
R461
100
C434
47
10V
C432 R432 R433 R462
470p 47k 680 100
C431
C457 C458
10 R431 C433
22 22
50V 1k 100p
50V 50V
x a o
y
. i
R434
47k
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POWER AMP
IC401
STK402-070S
R455
0.22
C455 C456 R460
2W
0.1 0.1 10
R457
R456
1k
0.22
2W
R458
15k R421
2.2k
Q423
Q421,422
2SC2785
Q421 STANDBY
STANDBY R422
2SA1175
22k SWITCH
SWITCH Q451
R427
2SC2785
33k
C422 OVER LOAD R423
47 50V 68k
DETECT
Q422
2SC2785
C421
R424 R426 R425
47
5.6k 2.2k 2.2k
50V
R416 D402
100k 1SS133T
Q419,420
THERMAL R410
Q Q 10
DETECT
3 7 6
Q401
2SC2785
OVER LOAD C406
0.1
DETECT
R406
R407 C405
0.22
1k 0.1
2W
R405
0.22
2W
POWER AMP
IC431
STK402-070S
R437
1k
R485
0.22
2W
R486
0.22
2W
R471 R475
2.2k 2.2k
R487
1k
Q471
2SA1175
R472
22k
Q481
2SC2785
R473 Q472
OVER LOAD 68k 2SC2785
DETECT
R488
C471 Q471,472
22k R474
C485 47
5.6k STANDBY
0.1 50V
SWITCH
C486
0.1
R476
R490 2.2k
10
u 1 6 3
R436
0.22
2W
R435
0.22
2W
67 67
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2 4
8 9 9
AC1(VL)
AC1(VL)
AC-GND
AC-GND
D491
D15XB20 3
AC1(VL)
1 4 AC1(VL)
2
C493
C491
2200
0.1
50V
C494
C492
2200
0.1
50V
STK MUTE
3 1 5 1 5 0 8 9 2
OVER LOAD
POWER GND
POWER GND
FRONT R
FRONT R
FRONT R GND
FRONT R GND
FRONT L
FRONT L
FRONT L GND
FRONT L GND
REAR R
REAR R
REAR GND
D432
1SS133T
REAR GND
D431
1SS133T
Q431
2SC2785
R438 OVER LOAD
22k
DETECT
m
R440 C436 C435
10 0.1 0.1
c o
.
HCD-FLX9W
2
8 9 9
NO701
6P
(Page 87)
CN402
18P
4 9 8 2 9 9
(Page 73)
REAR L
REAR L
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.