Sony STR-K785 - Video Board IC Block Diagrams; Video Board ICs

34
STR-K785
– VIDEO Board –
IC251 NJM2586AL
6dB
AMP
75Ω
DRIVER
CONT1
CONT2
6dB
AMP
75Ω
DRIVER
CONT1
6dB
AMP
75Ω
DRIVER
CONT1
CONT2
CONT2
1
2
3
4
5
6
7
8
9
10
11
22
21
20
19
18
17
16
15
14
13
12
BIAS
BIAS
BIAS
BIAS
BIAS
BIAS
BIAS
BIAS
BIAS
CH1_IN1
SW1
CH1_IN2
SW2
CH1_IN3
V+1
CH2_IN1
GND
CH2_IN2
GND
CH2_IN3
CH1_OUT
P.SAVE
CH2_OUT
V+2
CH3_OUT
V-2
CH3_IN1
V-1
CH3_IN2
GND
CH3_IN3
IC203 NJM2279D
1
3
V1
2
S1
13
S1
8
+5V
911
M
10
MON
5
VOUT
6
GND
4
S2
7
GND
14
-5V
V2
V3
12
75Ω
4.45kΩ
4.14kΩ
75Ω Driver
6.3dB
6dB Amp
20kΩ
20kΩ
75Ω
4.45kΩ
4.14kΩ
75Ω Driver
6.3dB
6dB Amp
20kΩ
20kΩ
20kΩ
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
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