Hitachi CDH-LE32FD14, Service Manual

Page: 76 / 98

Y
Y
Y Y
Y
OK
OK
OK
OK
OK
OK
N
N
N
N
N
N
N
N
N
N
N
Has audio but no video
Check if the backlight is on
Done
Check the connector of
backlight cable connected
Check the LVDS line
if it is connected
Safely connect the
backlight cable
Check the voltage of
backlight circuit is
24V
Done
Y Y
Y
N N
N
Check the
“ON/OFF” voltage
on “R15”, should be
greater than 2.7V
Check “Q1” &
“U100” Pin A3(R19)
if it works well.
Change
the panel.
Done
Upgrade the
software
Change the “Q1”
or “U100”
Change the
“U100”
Done
Done
Done
Upgrade the
software
Done
Safely connect the
LVDS line
Make sure the LVDS power is correct
(12V for 29”,32”&39”)
Done
Change the EEPROM
U101 “24C04”
Done
Correct the
power
Change the main
IC U100
Done
Change the
mainboard
Done
Done