Schematic Diagram; Surr Back Amp Board (Km7) - Sony STR-KM5 Service Manual

5-34. SCHEMATIC DIAGRAM – SURR BACK AMP Board (KM7) –
1 2 3
SURR BACK AMP BOARD
A KM7
B
[SBR]
R418
47k
JS401
5
R419
C
CL420
100k
R420
CL403
10
C413 R416
0.01 68k
CL414 CL402 CL421
C422 R417 R415
D
0.022 47k
15k
Q405
Q406
2SA1514KT146S 2SA1514KT146S
CURRENT DETECT R414 CURRENT DETECT
1.5k
0 -2 -2 -65
CL417 CL401
0 0
C411
E
220p
R413
0.22
R411 R412
4.7k 6.2k
SBR +VE SBR -VE
Q403
Q404
F MN2488-OPY-MK
MP1620-OPY-MK
B C E B C E
1 2 3 1 2 3
1 67 0 -1 -67 0
C419 C420
47p 47p
R409 R410
G
100 R407 100
R408
68k 470
R406
-0.6
2.2k
Q402
KTD1028
0.4
BIAS
-1
0.4
Q401
2SA1162-G
1 -1
C408
BIAS
47 35V
STK350-630TS-E
H
IC401
PRE DRIVER
1 2 3 4 5 6 7
I
1 -1 -66 0.1 0.1
C415
12p
C414 4p
R404 68k
J
R403
2.2k
CL419
C402
R401
220
1k
10V
K
[SBR]
STR-KM5/KM7
4 5 6
CL459
[SBL]
R468
JS451
47k
5
R469
CL458
100k
R470
CL453
10
CL454
C463
0.01
R466
68k
CL457 CL452
R467
C472 R465 CL455
47k
0.022 15k
CL456
Q455
Q456
2SA1514KT146S 2SA1514KT146S
CURRENT DETECT R464 CURRENT DETECT
1.5k
0 -2.3 -2.3 -65
CL415 CL416
0 0
C461
220p
R463
0.22
R461 R462
4.7k 6.2k
SBL +VE SBL -VE
Q453
Q454
MN2488-OPY-MK
MP1620-OPY-MK
B C E B C E
1 2 3 1 2 3
1 67 0 -1 -67 0
C429 C430
47p 47p
R459 R460
100 R457 100
R458
68k 470
R456
-0.6
2.2k
Q452
KTD1028
0.4
BIAS
-1
0.4
Q451
2SA1162-G
1 -1
C458
BIAS
47 35V
IC401
8 9 10 11 12 13 14 15
0.1 0.1 -66 -1 1 67 67 -67
C425
12p
C424 4p
R454 68k
C404 C454
R453
100p 100p
2.2k
CL418
R402 R452
68k
68k
C452
R451
220
1k
10V
C451
C401
10
10
50V
50V
[SBL]
• Waveforms
– DIGITAL AUDIO Board –
7 8
1
IC2105 os (X1(X_OUT))
500 mV/DIV, 100 ns/DIV
2
IC2123 2 (MCK)
24.59 MHz
100 mV/DIV, 10 ns/DIV
3
IC2123 3 (BCK)
MAIN
BOARD
(4/4)
CN351
(Page 30)
CN405
5P
500 mV/DIV, 100 ns/DIV
M
CL407
5 SBL
CL406
4
SBR
CL405
4
3 +B N
IC2123 4 (LRCK)
CL404
1 -B
MAIN
BOARD
(4/4)
CN952
(Page 30)
500 mV/DIV, 5 s/DIV
5
IC2806 ea (XOUT)
CN401 MAIN
12P
CL459 BOARD
1 LEVEL_DET
CL454
(2/4)
3 OVERCURRENT_DET
K
CL408
4 DC_DET
CN954
CL409
5 GND
(Page 28)
CL403
6 GND
CL410
7 GND
8 GND
MAIN 500 mV/DIV, 10 ns/DIV
CL411
L
9 PREAMP_GND
CL412
BOARD
10 SBR_IN
11 PREAMP_GND
(3/4)
CL413
12 SBL_IN
CN953
(Page 29)
45 45
3.0 Vp-p
4.0 MHz
240m Vp-p
3.0 Vp-p
3.1 MHz
3.4 Vp-p
47.81 kHz
1.54 Vp-p
24.57 MHz
STR-KM5/KM7
Ver. 1.5
– DISPLAY Board –
6
IC100 5 (OSC)
1.29 Vp-p
154.8 kHz
200 mV/DIV, 2.5 s/DIV