Chapter 5: Service and Repair 5-3
Symptom Probable Cause Solution
temperatures below 5° C.
Unit in direct sunlight For best display quality, keep the unit out of
direct sunlight or other bright light sources.
Lines in LCD
Display
Internal LCD harness
loose
Re-seat the LCD harness at the Touch Screen
control board and LCD ends.
External LCD
cable is loose
Ensure that the LCD cable is securely fastened
to the LCD board.
Bent pin in external
LCD cable
Check both ends of the LCD cable for bent
pins. Fix or replace cable.
LCD Flex
Board loose
Ensure that the Flex Board is properly
connected between the LCD panel and LCD
harness.
No display Internal LCD harness
loose
Re-seat the LCD harness at the Touch Screen
control board and LCD ends.
LCD Flex Board loose Ensure that the Flex Board is properly
connected between the LCD panel and LCD
harness.
Unit in “standby”
mode screen
blank)
Return unit from standby as required by
application.
Cables loose Ensure all cables are securely connected.
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