Essilor Instruments APH 550 User Manual

Name: Essilor Instruments APH 550
Brand: Essilor Instruments
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5-8 Error massage “WD Error” appears

Main causes when error message "WD Error" appears:

・ Failure of PD assy

Note: If the error is not displayed frequently, the device can be used without replacing the PD

assy.

In such case, however, use the device after confirming that the error does not appear

anymore by pressing the clear key and performing the initial operation.

“WD Error” appears.

YES

Replace the PD assy.

Does “WD Error” still appear even after pressing

the clear key and performing the initial operation?

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