5.0 TROUBLESHOOTING & SERVICE TIPS
no
SYMPTOM: THE INITIAL SCREEN IS NOT DISPLAYED ON THE LCD
Check if the
LED on the
front lights up?
start
Check if the
backlight is
OK?
Check if the
lighting of the
LCD is OK?
Open the top and
bottom assembly
to check the
connector harness
Open the top and
bottom assembly
to check the
connector to the
main board
yes
yes
no
no
yes
Refer to the
symptom NO
POWER, NO
GREEN LED
Is the
connector
harness
broken?
Replace broken
harness
yes
Remove the LCD
cover and plate of
the LCD unit to
check the
connector of the
FL harness
Is the
connector OK?
no
Repair connector
Replace FL
inverter or LCD
no
yes
Is the
connector
broken?
Replace LCD
harness or main
board
yes
Remove the LCD
cover and plate of
the LCD unit to
check the
connection of the
harness to the
LCD unit
no
Is the
connection
OK?
Connect the LCD
harness to the
LCD unit
no
Replace LCD unit
or main board
yes
Replace LCD unit
or main board
SYMPTOM: NO IMAGE OR SOUND COMES OUT FROM THE EXTERNAL INPUT
start
Replace the main
board or the
connector
