Schematic Diagram -Power Board - Sony MHC-RG270 Service Manual

6-16. SCHEMATIC DIAGRAM – POWER Board –
C441
10 R441
50V 2.2k
JR441
0
C443 R443
0.001 47k
C448
22
35V
R444
47k
R446
1k
C444
0.001
C446
100p
JR442
0
R442
2.2k
AEP,UK,
EE,RU C442
10
50V
C493 C494
2200p 2200p
CN443
(GX555/RG475/RG575)
6P
+Vcc
NC
GND
-Vcc
OVERLOAD/DC DETECT
(Page 39) RELAY+
RELAY-
HCD-GX355/GX555/RG270/RG475/RG575
4
IC441(1/2)
STK403-130
C445
100p
10
POWER AMP
R491
47k
D483
1SS355 R492
R445 TE-17 1k
1k Q489
2SC5625
STANDBY
C447
SWITCH R493 R457
22
C489 47k 22k
35V C488
C491 47
22
1000p 63V
35V
(AEP,UK,EE,RU) C490
100
D441
63V
MC2836
R495 R458
1 22k
R448 47k
Q441,442
OVER LOAD
9
DETECT
14
IC441(2/2) 7
STK403-130 6
2
15 3
1
8
JW402
R496
R449
100
47 1/2W
R447 47k
JW422
JW401
R497 R466 R465
Q481,482
R451 100k 100k 47k
0.22 DC DETECT
5W
C451
Q481
0.1
Q482 2SC3052
2SC3052 EF
R455
EF
1k C453
0.1
R483
Q441
2SC5625 R425 R453 C481
10 10 100
D481 10V TH441
R459 1SS355 R424 R420
47k TE-17 10 10
R460
47k Q442
2SC5625 R423 R421
10 10
Q485
R422 R454
2SA1235EF
10 10 R482 C486
PROTECTOR 10k 2.2
50V
R456
1k C454 R481
0.1 4.7k
C452 R487
Q487
0.1 47k
2SC3052EF
PROTECT
DETECT
R498
1k
R440 22k
R499 R490
R452 1k 4.7k
0.22
5W
R488
Q486 Q488
22k
∗
2SC3052EF
RELAY DRIVE RELAY SWITCH
37 37
HCD-GX355/GX555/RG270/RG475/RG575
L441
R461 10 R411
R413 10 R412
L442
R462 10 R414
Q483,484
R416 10 R415
TEMPERATURE DETECT
Q483 RY441
2SC3052
R485
EF
100k
R480 R484
100k 100k D443
1SS355TE-17
22
Q484
2SC3052
R417 R418
EF
100 220
R486 R407 R419
100k 100 100
∗C411
1000p (AEP,UK,EE.RU) C411
∗
0.01 (EXCEPT AEP,UK,EE,RU)
JW441
C403
0.1
100V
C405
R401 D401
2200
100k D10XB20
63V
C404
0.1
C406
R402 100V
2200
100k
63V
∗Q488
2SC2411 (GX555/RG475/RG575)
2SC3052EF (GX355/RG270)
10
10
10
10
SP GND
(L) JK441
SP(L)
SPEAKER
C459
IMPEDANCE
1000p 100V
SP GND
USE 6-16Ω
C460 (AEP,UK,EE,RU)
(R)
1000p 100V
SP(R)
(CHASSIS)
EP401
CN441
13P
SP L-OUT
SP-GND
SP R-OUT
RELAY B+
PROTECT
R-OUT
AMP-A-GND
(Page 35)
L-OUT
R437
UNREG +16V
10k
PWR GND
STK MUTE
NC
GND
CN442
3P
AC1
NC
GND
AC1
(Page 49)