Schematic Diagram - Power Amp Section - Aiwa CX-JPK33 Service Manual

6-20. SCHEMATIC DIAGRAM – POWER AMP Section –
R411
2.2k
R441
C441
1k
10 JW441
50V
C445
R413 100p
4.7k
R445 R491 R467
1k 22k 33k
C447
22
35V
Q489
2SC1841
STANDBY
C443 R443 SWITCH
1000p 33k
C444 R444 R495
1000p 33k 1
C448
22
35V
R446
1k
R414 C446
4.7k 100p
IC441(2/2)
STK403-090
C442
JW442
10 R442
50V 1k
R412
2.2k
R496
100
JW403
POWER AMP
IC441(1/2)
STK403-090
R451
0.22
R465
2W
47k
R455
1k
R447
33k
Q441
2SC1841 C451
D483 R492 0.1
OVER LOAD
1SS133T-72 1k
DETECT
R493 R457 C453
33k 22k 0.1
C488 R453
R494 D441 R459
22 10
2.2k 1SS133 47k
35V 1/2W
D481
C489
1SS133
100
100V
D442 R460
1SS133 47k
R448
33k
R458
22k
Q442
2SC1841
OVER LOAD
DETECT
R454
R456
10
1k
1/2W
C454
R452
0.1
0.22
2W
C452
0.1
JW404
TH441
Q481,482
DC DETECT
R466
56k
Q482 Q481
2SC2785 2SC2785
R483 R484 R485
22 56k 100k
Q483
2SC2785
C481
100 Q484
Q483,484
10V 2SC2785
THERMAL
R486
DETECT 100k
C486
R482
2.2
10k
50V
Q485
2SA1175 Q485,487
R481
PROTECT
4.7k
DETECT
R487
33k
Q487 Q488
2SC2785 2SC2785
R490
4.7k
Q486,488
PROTECTOR
Q486
2SC2785
D482
1SS133
C487
R488 R489
4.7
22k 4.7k
50V
41 41
L441
1.7µH
R461
RY441 10 1/2W
R462
10 1/2W
L442
1.7µH
R407
D443
100
1SS133
1/2W
D401
D10XB20
C405
R401 C403
2200
0.1
100k
50V
100V
EP401
C407
0.01
C408
0.01
C406
R402
2200
100k
50V
C402
0.01
C404
0.1
100V
C411
0.01
JW407
EP402
EP491
C492
0.01
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
CX-JPK33
JK441
4P
L
SPEAKER
IMPEDANCE
USE 6−16Ω
R
(CHASSIS)
CN442
3P
AC-1
NC
GND
AC-1
(Page 43)
CN441
13P
L-OUT
SP-GND
R-OUT
RELAY B+
PROTECT
IN-R
AMP-A-GND
IN-L
UNREG.16V
(Page 34)
PWR GND
STK MUTE
AC-3
GND(AC-3,RELAY)
(CHASSIS)