Philips PET700 Service Manual page 12

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