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