Sony STR-K685, Service Manual

Page: 28 / 52

28 28
STR-K685
STR-K685
4-15. SCHEMATIC DIAGRAM – MAIN BOARD (4/4) –
J
HEADPHONE
BOARD
CNP790
(Page 32)
(Page 27)
0.1
0.7
0
3.3
4.1
4.1
-37
-37
-1.1
0
37
0.4
-0.6
0
-1.5
0
-37
0
-1.1
-37
37
0.4
-0.6
0
0
-1.7
0.7
0.1
0
-37.4
0
0
-1.1
-1.1
-1.1
0
0
1.1
1.1
0.4
-1
-1
-1
0
0
1.1
1
0.4
0
-37.6
0
3.3
4.1
4.1
0
-1.1
0
-0.6
0.4
37
0
-1.5
-37
-37
-1.1
0
-0.6
0.4
37
0
0
-1.5
-37
-37
-37
0
0
0
0.4
1.1
1.1
-1
-1
0
-1
0
0.4
1.1
1.1
-1
-1
-1
0
37
1
-1
37
-0.2 -0.2 -0.2 -0.2
37
-1
1
37 37
-37
37 1.1
-1
37
-0.2 -0.2 -0.2 -0.2
37
-1
1
37 37
-37
No mark:FM
POWER AMP
POWER AMP
AF POWER
PROTECT
Q881,Q883
PROTECT SWITCH
Q503,Q504,Q553,Q554,
Q603,Q604,Q653,Q654
BOOSTER
Q505,Q506,Q555,Q556,
Q605,Q606,Q655,Q656
CURRENT DETECT
Q501,Q502,Q551,Q552,
Q601,Q602,Q651,Q652
LIMITER
FRONT
SPEAKERS
IMPEDANCE
USE 6-16
CENTER
R793
C551
C502
C552
R501
R551
C507
C557
R504
R554
C601
C602
C607
R601
R604
C651
C652
R651
R654
C657
R507
R508
R509
R511
R513
R514
R517
R518
R519
R520
R522
C513 C514
C516
R558
R559
R570
R561
C563
R563
R564
R569
R568
C565
R567
C564
R557
R572
R571
C566
R607
R609
C613
R613
R614
R619
R618
C615
C614
R617
R622
C616
R620
R669
R668
C664
R667
C665
R672
R671
C666
R664
R670
R663
C663
R661
R658
R659
R657
R624
C882
R882
R883
R884
R885
C506
C606
R516
R566
R616
R666
RY502
C662
C661
C612
C611
C562
C561
C512
C511
RY601
R512
R562
R612
R662
R515
R565
R615
R665
R510
R610
R660
R531
R532
R791
C501
C515
R625
C554
C654
RY551
C504
R560
R574
R500
R600
D884
D529
D549
C529
C549
R653
R603
C603
C604 C653
IC601
JW600
R553
R503
JW500
C503
C553
IC501
TM602
TM602
D791
CN701
Q509
D881
R840
R844
R843
R549
R550
R529
R539
Q653
Q651
Q652
Q655
D651
D652
Q657
Q654
Q656
Q606
Q602
Q605
D601
D602
Q607
Q557
D552
D551
Q555
Q553
Q551
Q552
Q556
Q506
Q502
Q501
Q503
Q505
D501
D502
Q507
D553
Q608
Q881
C881
Q882
Q883
D882
D883
D603
D841
C842
C658
C608
C558
C508
C600
R602
C656
R652
C500
R502
R552
C556
R655
R656
R605 R606
Q601
R608
Q604
R621
Q603
R611
R555
R556
Q554
R505
R506
Q504
R521
82
4.7
50V
100p
100p
1k
1k
100
10V
100
10V
68k
68k
4.7
50V
100p
100
10V
1k
68k
4.7
50V
100p
1k
68k
100
10V
560
100
100
4.7k
1.5k
15k
15k
22k
22k
68k
47k
220p
0.01
0.022
100
100
68k
4.7k
220p
1.5k
15k
22k
22k
10
50V
15k
0.01
560
47k
10
0.022
560
100
220p
1.5k
15k
22k
22k
10
50V
0.01
15k
47k
0.022
68k
22k
22k
0.01
15k
10
50V
47k
10
0.022
15k
68k
1.5k
220p 4.7k
100
100
560
82
10
50V
10k
6.8k
39k
1k
3p 500V
3p 500V
3.3k
3.3k
3.3k
3.3k
47p
500V
47p
500V
47p
500V
47p
500V
47p
500V
47p
500V
47p
500V
47p
500V
6.2k
6.2k
6.2k
6.2k
22k
22k
22k
22k
680 1W
680 1W
0.22
0.22
0.22
RELAY
12V
RELAY
12V
2.2k
4.7
50V
10
50V
2.2k
100p
500V
100p
500V
RELAY
12V
100p
500V
0.22
82
47k
47k
1SS133T-77
100p
50V
100p
500V 100p
50V
100p
50V
100p
50V
1SS133T-72
4P
2SC1740S-QRT
1SS133T-72
MN2488
-OPY-MK
2SA1115TP-EF
2SC3623
ATP-LK
2SA1038S
-RSE-TP
1SS133T-72
1SS133T-72
2SC1815 GR-TPE2
MP1620
-OPY-MK
2SA1038S
-RSE-TP
2SA1038S
-RSE-TP
2SC3623
ATP-LK
2SA1038S
-RSE-TP
1SS133T-72
1SS133T-72
2SC1815 GR-TPE2
2SC1815 GR-TPE2
1SS133T-72
1SS133T-72
2SA1038S
-RSE-TP
MN2488-OPY-MK
2SA1115TP-EF
2SC3623
ATP-LK
2SA1038S
-RSE-TP
2SA1038S
-RSE-TP
2SC3623
ATP-LK
2SA1115TP-EF
MN2488-OPY-MK
2SA1038S
-RSE-TP
1SS133T-72
1SS133T-72
2SC1815 GR-TPE2
1SS133T-72
2SC1740S-QRT
2SA1038S
-RSE-TP
2SC1740S-QRT
2SC1841
TP-PAFAEA
1SS133T-72
1SS133T-72
1SS133T-72
47
25V
47
25V
47
25V
47
25V
2.2
100V
68k
3p 500V
68k
2.2
100V
68k
68k
3p 500V
2.2k 82k
2.2k 82k
2SA1115TP-EF
100
MP1620
-OPY-MK
10
MN2488
-OPY-MK
4.7k
2.2k
82k
MP1620
-OPY-MK
2.2k
82k
MP1620
-OPY-MK
10
1SS133T-72
1SS133T-72
0.01
0.01
2.7k
2.7k
STK350-530T-E
2.7k
2.7k
STK350-530T-E
6.8k
22k
22k
47k
100k
47k
100k
10V
MTZJ-T-72-5.6C
47
25V
AF POWER
PROTECT
AF POWER
PROTECT
AF POWER
PROTECT
RELAY DRIVE
RELAY DRIVE
VACS
CONTOROL
(Page 25)