Video Board - Sony STR-K680 Service Manual

STR-K680/K780
– MAIN Board –
IC400 M61542FP
1
GND
INL5
2
INR5 3
INL4 4
INR4 5
INL3 6
INR3 7
INL2 8
INR2
9
INL1 10
INR1
11
AVEE 12
ADIFL
13
ADIFR
14
15
– VIDEO Board –
34
56 55 54 53
Input ATT
(for ADC)
Input ATT
(for ADC)
16 17
IC251 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
CH2_IN3
11
BIAS
Volume
Volume
Volume
Volume
MCU I/F
18
19 20 21 22 23 24 25 26 27 28
75Ω
6dB
22
DRIVER
AMP
CONT1
21
75Ω
6dB
20
DRIVER
AMP
CONT1
19
75Ω
6dB
18
DRIVER
AMP
CONT1
17
16
BIAS
15
14
BIAS
13
12
BIAS
CONT2
42 SRC
41 SLOUT
SLOUT
40
SLC
39
SLVIN
38
37 SLIGO
36 CIGO
35 CVIN
34 CVC
COUT
33
32 SWOUT
31 SWC
30
SWVIN
29 SWIGO
CH1_OUT
P.SAVE
CH2_OUT
V+2
CH3_OUT
V-2
CH3_IN1
V-1
CH3_IN2
GND
CH3_IN3