Essilor Instruments APH 550

15
5-3 Error message “Right (Left) Communication Error” appears
Main causes when error message “Right (Left) Communication Error” appears:
・ Failure of harness of motor drive unit
・ Failure of motor control board assy
・ Failure of right (left) side motor drive board assy
NO
YES
“Right (Left) Communication Error” appears.
OK
NO
Replace the harness of
the motor drive unit.
Is the harness of the motor drive unit normal?
Connect the connector for connecting the LD-L assy of the motor
control board assy (CN103) and CN302 of the right motor drive
board assy, and the connector for connecting the LD-R assy of the
motor control board assy (CN102) and CN302 of the left motor
drive board assy each with the harnesses of the motor drive unit.
Does “Right (Left) Communication
Error” still appear?
YES
“Right (Left) Communication Error” does not appear
and "Left(Right) Communication Error" appears.
YES
Replace the right (left) motor drive board assy.
Replace the motor control board assy.
Does “Right (Left)
Communication Error” appear?
YES
NO
NO