Onkyo HT-R420 Service Manual

TX-SR402/8240/HT-R420
S2
(Pin 2)
H
L
H
L
S3
(Pin 3)
H
H
L
L
Vin1
(Pin 4)
ON
OFF
OFF
OFF
Vin2
(Pin 6)
OFF
ON
OFF
OFF
Vin3
(Pin 8)
OFF
OFF
ON
OFF
Vin4
(Pin 9)
OFF
OFF
OFF
ON
driver control
6dB
amp
video switch
(4input 1output)
123 4
VIDEO
OUT
A B VINI
5
GND
6
VIN2
7
VCC
8
VIN3
9
VIN4
IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-1
Q213:LA7956(Video switch)
BLOCK DIAGRAM
TRUTH TABLE
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
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Onkyo HT-R420 Specifications

General

Brand	Onkyo
Model	HT-R420
Category	Receiver
Language	English