Essilor Instruments APH 550

28
Replace the harness.
Replace the LCD panel assy.
Replace the control board assy.
Are the printer harness and the
control-printer harness normal?
YES
NO
Is the screen display normal?
NO
Does the head move or it beep
when operating the device
with the operation switches
or the dial switch etc.?
NO
YES
Is the screen display normal?
YES
NO
YES
OK
A