Hitachi L32A404 Manual page 10

2). No Picture, Picture Failed (Color Failed, Dark Picture, Beat Noise, Etc.)
First, confirm the connection of all connectors between Board's, then survey by following the flowchart as shown
below.
No Picture, Picture failed
(Color failed, Dark picture,
Occured at only
Video1 input (CVBS), or
Video2 input (CVBS, S2)?
Beat noise, etc.)
No
Voltage of all pin of
CN701 on Main Board is
correct?
Yes
Main Board
L32A404
Yes
No
Power Board
CN701 (1)
(2)
(3)~(4)
(5)~(7)
(8)~(9)
(10)~(12) 5V
10
Main Board
3.3V
0~3.3V
12V
0V
24V