Sony STR-KM7 - Schematic Diagram; SURR BACK AMP Board (KM7)

STR-KM5/KM7
STR-KM5/KM7
4545
5-34. SCHEMATIC DIAGRAM – SURR BACK AMP Board (KM7) –
240m Vp-p
24.59 MHz
2 IC2123 2 (MCK)
100 mV/DIV, 10 ns/DIV
1.54 Vp-p
24.57 MHz
5 IC2806 ea (XOUT)
500 mV/DIV, 10 ns/DIV
3.0 Vp-p
4.0 MHz
1 IC2105 os (X1(X_OUT))
500 mV/DIV, 100 ns/DIV
3.0 Vp-p
3.1 MHz
3 IC2123 3 (BCK)
500 mV/DIV, 100 ns/DIV
3.4 Vp-p
47.81 kHz
4 IC2123 4 (LRCK)
500 mV/DIV, 5 Ps/DIV
• Waveforms
– DIGITAL AUDIO Board – – DISPLAY Board –
6 IC100 5 (OSC)
200 mV/DIV, 2.5 Ps/DIV
154.8 kHz
1.29 Vp-p
1
A
B
C
D
E
F
G
H
I
J
K
2 3 4 5 6 78
SURR BACK AMP BOARD
-671 -1 -66 0.1 0.1 0.10.1 -66 -1 1 67 67
0
-20
0
-65-2
0
-2.30
0
-65-2.3
-1
-0.6
0.4
-1
0.4
1
671 0 -67-1 0 671 0
-67-1 0
-1
0.4
1
-1
-0.6
0.4
918765432151413121110
1
3
4
5
1
12
3
4
5
6
7
8
9
10
11
1k
R401
68k
R402
2.2k
R403
C402
220
10V
68k
R452
1k
R451
68kR404
C454
100p
C401
10
50V
2.2k
R453
C452
220
10V
C404
100p
C451
10
50V
MUTE +VOUT1 -VOUT2 COMP1 NF1 IN1 GND IN2 NF2 COMP2 -VOUT2 +VOUT2 VCC VCC VEE
CN405
5P
-B
+B
SBR
SBL
CN401
12P
LEVEL_DET
SBL_IN
OVERCURRENT_DET
DC_DET
GND
GND
GND
GND
PREAMP_GND
SBR_IN
PREAMP_GND
C415
12p
C425
12p
C414 4p
68kR454
C424 4p
CL404
CL405
CL406
CL407
CL408
CL409
CL410
CL411
CL412
CL413
CL418
CL419
[SBL][SBR]
CL459
CL454
CL403
SBR +VE
47k
R418
1.5k
R414
4.7k
R411
68k
R416
R420
10
SBR -VE
C411
220p
2.2k
R406
68k
R407
15k
R415
R410
100
R409
100
R412
6.2k
100k
R419
R413
0.22
[SBR]
470
R408
2SA1514KT146S
Q405
CURRENT DETECT
2SA1514KT146S
Q406
CURRENT DETECT
D402
DA2J10100L
D401
DA2J10100L
CL402 CL421CL414
CL420
CL403
CL401CL417
KTD1028
Q402
BIAS
Q401
BIAS
2SA1162-G
JS401
5
C419
47p
C420
47p
47k
R417
C413
0.01
C408
47 35V
C422
0.022
Q404
MP1620-OPY-MK
BCE
123
Q403
MN2488-OPY-MK
BCE
1
23
SBL +VE
47k
R468
1.5k
R464
4.7k
R461
68k
R466
R470
10
SBL -VE
C461
220p
2.2k
R456
68k
R457
15k
R465
R460
100
R459
100
R462
6.2k
100k
R469
R463
0.22
[SBL]
470
R458
2SA1514KT146S
Q455
CURRENT DETECT
2SA1514KT146S
Q456
CURRENT DETECT
D452
DA2J10100L
D451
DA2J10100L
CL452
CL455
CL457
CL456
CL458
CL459
CL453
CL454
CL416CL415
KTD1028
Q452
BIAS
Q451
BIAS
2SA1162-G
JS451
5
C429
47p
C430
47p
47k
R467
C463
0.01
C458
47 35V
C472
0.022
Q454
MP1620-OPY-MK
BCE
123
Q453
MN2488-OPY-MK
BCE
1
23
L
K
M
MAIN
BOARD
(4/4)
CN351
(Page 30)
MAIN
BOARD
(4/4)
CN952
(Page 30)
MAIN
BOARD
(3/4)
CN953
(Page 29)
MAIN
BOARD
(2/4)
CN954
(Page 28)
N
KM7
STK350-630TS-E
IC401
PRE DRIVER
IC401
Ver. 1.5