Welch Allyn 53000 Service Manual page 39

Service manual
Symptom
Missing LED display.
Erroneous LCD characters.
Buttons on the right side of
the monitor require noticeably
more pressure to actuate.
Possible cause
LED failure on the display board.
LCD partially connected.
Screws attaching the display
board to the front panel are loose.
Troubleshooting and repair
Suggested action
Replace the display board.
Fully connect the LCD to the main board.
Tighten the screws.
Do not exceed 4 in-lbs.
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