Sony STR-K890 Service Manual page 40

STR-K890
QQ
3 7 63 1515 0
– VIDEO Board –
IC203 NJM2595D
V3 9
SW2
10
75Ω
11
NC
Driver
GND 12
V1 13
14
SW1
75Ω
15
VI.OUT
Driver
TE
L 13942296513
VCC 16
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40
http://www.xiaoyu163.com
6dB
Amp
6dB
Amp
IC304 NJM2586AL
CH1_IN1 1
BIAS
SW1
2
CH1_IN2
3
BIAS
SW2
4
CONT2
CH1_IN3
5
BIAS
V+1
6
CH2_IN1
7
BIAS
GND
8
CH2_IN2
9
BIAS
GND
10
CONT2
x ao
CH2_IN3
11
y
BIAS
i
http://www.xiaoyu163.com
8
Q Q
3 6 7 1 3
75Ω
6dB
DRIVER
AMP
CONT1
75Ω
6dB
DRIVER
AMP
CONT1
75Ω
6dB
DRIVER
AMP
CONT1
BIAS
BIAS
u163
BIAS
CONT2
.
2 9 9 4 2 8
8 VEE
7 NC
SW4
6
5 V2
4 SW3
DVD
3
SW5
2
1 5 0 5 8 2 9 9 4
6dB 75Ω
M.OUT
1
Amp Driver
22 CH1_OUT
P.SAVE
21
CH2_OUT
20
V+2
19
CH3_OUT
18
V-2
17
CH3_IN1
16
V-1
15
CH3_IN2
14
m
GND
13
co
CH3_IN3
12
9 9
2 8 9 9