Sony CX-JN77 / JAX-N77 / JAX-PK77 Service Manual ▷ View online
CX-JN77
41
41
C403
R441
C441
R467
R491
D483
R492
R493
R494
C488
Q489
C447
C448
C444
R446
R495
R442
C489
R445
C443
C451
C453
R459
R453
R460
R458
R457
C442
R496
Q484
Q483
R485
Q481
Q482
C481
R466
R482
C486
R481
R489
Q487
R487
Q485
R488
C487
Q486
C407
C408
C402
C404
EP401
CN442
R407
R461
R462
RY441
R486
R402
CN441
EP402
R454
C454
R456
C452
R465
R455
JW407
JW
401
JW
4
02
D401
D443
R484
R483
D482
Q488
TH441
JW403
JW404
D481
D442
D441
R411
JW441
C445
R412
C446
JW442
Q442
Q441
R490
JK441
R401
R413
R447
IC441(1/2)
IC441(2/2)
R448
R452
R451
R443
R444
R414
C405
C406
C491
C459
C460
R463
R464
C455
C456
C457
C458
0.1
100V
1k
10
50V
33k
22k
1SS133T-72
1k
33k
2.2k
22
35V
2SC1841
22
35V
22
35V
1000p
1k
1
1k
100
100V
1k
1000p
0.1
0.1
47k
10
1/2W
47k
22k
22k
10
50V
100
2SC2785
2SC2785
100k
2SC2785
2SC2785
100
10V
10V
56k
10k
2.2
50V
50V
4.7k
4.7k
2SC2785
33k
2SA1175
22k
4.7
50V
50V
2SC2785
0.01
0.01
0.01
0.1
100V
3P
100
1/2W
10 1/2W
L441
1.7
µH
L442
1.7
µH
10 1/2W
100k
100k
13P
10
1/2W
0.1
1k
0.1
47k
1k
D10XB20
1SS133
56k
22
1SS133
2SC2785
1SS133
1SS133
1SS133
2.2k
100p
2.2k
100p
2SC1841
2SC1841
4.7k
4P
100k
10k
47k
STK403-130
STK403-130
47k
0.22
5W
0.22
5W
47k
47k
10k
3300
63V
3300
63V
0.001
1000p
1000p
10
1/2W
10
1/2W
0.1
0.1
0.1
0.1
AC-1
AC-1
GND
NC
L-OUT
SP-GND
R-OUT
AMP-A-GND
RELAY B+
PWR GND
STK MUTE
PROTECT
AC-3
GND(AC-3,RELAY)
UNREG.16V
IN-R
IN-L
(CHASSIS)
(CHASSIS)
POWER AMP
SWITCH
STANDBY
OVER LOAD
DETECT
OVER LOAD
DETECT
DC DETECT
Q481,482
Q483,484
THERMAL
DETECT
DETECT
PROTECT
PROTECTOR
Q485,487
Q486,488
L
R
IMPEDANCE
SPEAKER
USE 6–16
Ω
6-20. SCHEMATIC DIAGRAM – POWER AMP Section – (AEP, UK, CIS only)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
(Page 45)
(Page 34)
CX-JN77
42
42
JW445
JW446
JW447
JW448
JW449
JW
450
JW
451
JW
452
JW
453
JW455
JW457
JW458
JW459
JW460
JW
461
JW
462
JW
463
JW
464
JW465
JW466
JW467
JW468
JW469
JW474
JW475
JW
476
JW
477
JW
478
JW
479
JW
481
JW482
JW483
JW
484
JW410
JW412
JW
413
JW
414
JW417
JW418
JW
419
JW
420
JW
421
JW422
JW423
JW
424
JW
425
JW
426
JW
427
JW
428
JW
429
JW
430
JW
431
JW432
JW
485
JW
486
JW
487
JW
488
JW489
JW473
JW472
JW470
JW471
R409
EP402
C462
R414
C413
C414
Q482
Q481
C403
R484
R483
Q484
Q483
R485
R482
C402
R490
D482
Q486
R487
R481
Q487
R407
C404
R488
R462
R461
L442
L441
RY441
TH441
Q485
C486
EP401
C454
CN441
R442
R
455
R478
C461
R454
C442
Q490
R445
R472
R475
R450
D444
C453
C443
R402
C444
C447
R468
D442
D481
D446
C463
R458
R453
R474
Q491
R496
IC441
R456
R460
R410
R404
R412
CN442
R447
Q489
EP491
C452
C441
R413
D441
C446
Q441
R469
C448
R477
Q488
D401
JW403
R473
D445
R470
R401
JW
411
R403
R471
R448
JW
442
Q442
R476
R446
JW
401
R467
C492
C406
C481
R466
C409
R459
C410
R449
JW441
C405
C445
R457
R444
R443
R441
R486
D443
R489
R465
JW
404
R495
C451
JW409
D402
R411
C487
E
E
E
E
E
E
E
E
E
E
1
18
E
E
E
E
POWER BOARD
1-861-486-
13
(CHASSIS)
(13)
(CHASSIS)
JK441
–
+
–
+
R
L
SPEAKER
IMPEDANCE
USE 6 – 16
Ω
TRANS BOARD
CN905
H2
(CHASSIS)
MAIN
BOARD
CN307
E2
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
6-21. PRINTED WIRING BOARD – POWER AMP Section – (E51, MX only)
•
See page 25 for Circuit Boards Location.
:Uses unleaded solder.
(Page 36)
(Page 46)
D401
F-4
D402
G-3
D441
C-7
D442
C-6
D443
C-1
D444
D-8
D445
B-7
D446
B-7
D481
C-7
D482
C-4
IC441
A-6
Q441
C-6
Q442
C-6
Q481
C-7
Q482
C-7
Q483
B-9
Q484
C-9
Q485
B-4
Q486
B-4
Q487
B-3
Q488
C-4
Q489
C-8
Q490
C-7
Q491
D-7
• Semiconductor
Location
Ref. No.
Location
CX-JN77
43
43
RY441
R473
R470
R459
D441
D442
R475
C463
R471
Q489
R462
L442
R461
L441
D443
R488
R481
Q487
Q486
C487
D482
R489
R490
Q488
R482
C486
Q485
Q481
C481
Q484
Q483
R486
R485
R466
R465
D481
R460
R457
Q441
R454
C454
C452
C453
R453
C451
R458
R449
R478
Q442
R456
R450
R477
R476
R495
C462
R443
R444
R442
C442
C444
C443
C441
R441
C492
R401
R403
R404
R402
C404
R410
R409
C403
C414
C413
CN442
CN441
EP401
EP402
Q491
R474
R455
R467
R496
C461
R468
JW411
JW409
TH441
R483
R484
JK441
JW401
C402
D401
D402
C405
C409
C410
C406
R487
Q482
R447
JW403
JW404
D446
R448
R469
R412
JW442
C446
C448
C447
R413
R414
R445
R446
EP491
D445
R411
JW441
C445
R472
Q490
IC441(1/2)
IC441(2/2)
R407
D444
22k
33k
100k
1SS133T-72
1SS133T-72
10k
470
6.3V
68k
2SC1841
10
1/2W
10
1/2W
1SS133T
22k
4.7k
2SC2785
2SC2785
4.7
50V
50V
1SS133T
-72
4.7k
4.7k
2SC2785
10k
2.2
50V
50V
2SA1175
2SC2785
100
10V
10V
2SC2785
2SC2785
100k
100k
56k
47k
1SS133T
100k
15k
2SC1841
10
1/2W
0.1
0.1
0.1
10
1/2W
0.1
15k
0.22
5W
10k
2SC1841
1k
0.22
5W
100
15k
1
47
100V
56k
56k
1k
10
50V
1000p
1000p
10
50V
1k
0.01
100k
100k
100k
100k
0.1
100V
100k
100k
0.1
100V
0.1
0.1
5P
13P
2SA1207
2.2k
1k
3.3k
1W
100
47
100V
3.3k
1W
22
56k
4P
0.01
D10XB20
D10XB20
3300
80V
3300
50V
3300
50V
3300
80V
33k
2SC2785
56k
MTZJ-T-72
-16B
56k
33k
2.2k
100p
47
50V
47
50V
10k
10k
1k
1k
MTZJ-T-72-16B
2.2k
100p
33k
2SC1841
STK412-240
STK412-240
100
1/2W
1SS133T
-72
GND
AC-VH
AC-VL
AC-VL
AC-VH
L-OUT
SP-GND
R-OUT
IN-R
AMP-A-GND
IN-L
RELAY B+
PWR GND
STK MUTE
PROTECT
AC-3
GND(AC-3,RELAY)
UNREG.16V
(CHASSIS)
L
R
IMPEDANCE
SPEAKER
(CHASSIS)
Q486,488
PROTECTOR
Q485,487
PROTECT
DETECT
Q481,482
DC DETECT
Q483,484
THERMAL
DETECT
DETECT
OVER LOAD
DETECT
OVER LOAD
(CHASSIS)
POWER AMP
STANDBY
SWITCH
Q490,491
LEVEL SHIFT
H2
E2
6-22. SCHEMATIC DIAGRAM – POWER AMP Section – (E51, MX only)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
(Page 47)
(Page 34)
CX-JN77
44
44
JW900
JW926
JW929
JW930
JW917
F904
CN907
F905
F906
F907
R908
C908
C909
R903
D906
R904
C910
Q902
JW908
C906
CN905
D908
C925
CN904
C911
CN906
C920
C921
C924
C923
C926
C922
JW918
JW920
JW921
JW922
JW923
JW924
JW903
D902
JW906
JW910
CN901
CN902
C903
JW902
RY901
D901
CN903
PT902
D905
D903
C904
C905
D904
PT901
NOT REPLACEABLE:
BUILT IN TRANSFORMER
BUILT IN TRANSFORMER
∗
MAIN POWER
TRANSFORMER
1
1
3
2
1-861-483-
15
(15)
POWER
BOARD
CN442
H1
MAIN
BOARD
CN303
G1
1
3
1
10
B
E
C
(CHASSIS)
TRANS BOARD
SUB POWER
TRANSFORMER
1
2
W001
(AC IN)
1-861-501-
14
(14)
1
SUB TRANS BOARD
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
1
3
2
6-23. PRINTED WIRING BOARDS – TRANS Section – (AEP, UK, CIS only)
•
See page 25 for Circuit Boards Location.
:Uses unleaded solder.
(Page 40)
(Page 36)
D901
B-9
D902
A-8
D903
A-8
D904
A-8
D905
A-8
D906
B-5
D908
B-4
Q902
C-5
• Semiconductor
Location
Ref. No.
Location
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