Onkyo HT-R430 Service Manual page 76

QQ
3 7 63 1515 0
IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-18
Q1003, 1012, 1013 : LA7956 (Video switch)
BLOCK DIAGRAM
TRUTH TABLE
TE
L 13942296513
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http://www.xiaoyu163.com
6dB
amp
driver control
1 2 3 4
VIDEO A B VINI GND
OUT
S2 S3 Vin1 Vin2
(Pin 2) (Pin 3) (Pin 4) (Pin 6)
H H ON OFF
L H OFF ON
H L OFF OFF
L L OFF OFF
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http://www.xiaoyu163.com
2 9
8
video switch
(4input 1output)
5 6 7 8 9
VIN2 VCC VIN3 VIN4
Vin3 Vin4
(Pin 8) (Pin 9)
OFF OFF
OFF OFF
ON OFF
Q Q
3 6 7 1 3
OFF ON
co
.
9 4 2 8
1 5 0 5 8 2 9 9 4
m
TX-SR403/8340
9 9
2 8 9 9