Essilor Instruments APH 550

35
5-21 Cannot switch chart
Chart which can communicate with: LCD-700, CP-500
Main causes when it cannot switch the charts:
・Failure of infrared communication board assy, motor control board assy or control board assy
・Failure of infrared harness
The chart cannot be switched.
Replace the control board assy.
Are the type of the chart and the
setting of the channel correct?
NO
YES
Correct the setting.
【Refer to 7-2-4.】
Replace the infrared
communication board assy.
OK
Is the infrared harness normal?
NO
YES
Replace the infrared harness.
Can the chart be switched?
Is it operated with the remote
controller for the charts?
NO
YES
Failure of the chart.
Can the chart be switched?
YES
NO
Replace the motor
control board assy.
Can the chart be switched?
YES
NO
NO
YES