Hitachi Alpha L42A404, Service Manual

Page: 9 / 72

L42A404
9
Main Board
No
Power Board
LCD Panel.
The voltage of
pin No.3,No.4 of CN701
on Main Board is 12V?
The voltage of
pin No.11 or 12 of CN701
in Main Board is
5
V?
Yes
No
Main Board
LCD Panel.
Yes
The voltage of
pin No.1 to 4 of CN405
in Main Board is
12
V?
No Yes
Main Board
Yes
(2) Stand-by / On lamp (LED)
is lighting in red or blue
LED Indicates
blue or red?
red
blue
Turn R/C power on, then
LED change to blue? No
Backlight of LCD Panel
is lighting?
Yes
No