Essilor Instruments APH 550

33
【B. In case that both LEDs do not light up】
OK
The LED for lighting the
eyeball does not light up.
YES
YES
Replace the motor
control board assy.
Is the harness of the LED for
lighting the eyeball normal?
NO
Replace the harness of the
LED for lighting the eyeball.
Does the LED for lighting
the eyeball light up?
NO
Does the LED for lighting
the eyeball light up?
NO
YES
Replace the LED board assy
for lighting the eyeball.
Is "PD LED Error" displayed?
Replace the control board assy.
YES
NO
Does the LED for lighting
the eyeball light up?
NO
YES
Does the LED for lighting
the eyeball light up?
Replace the motor drive board assy.
YES
NO