12
Replacing Procedure of Each Unit
All maintenance operation most be done by technicians approve by Essilor instrument service center.
12-1 Replacement of the main unit cover unit, the 3 axes control board ASSY
12-2
Replacement of the optical control board ASSY
12-3
Replacement of the optical unit ASSY, CMOS harness
12-4 Replacement of the LCD harness, the main control board ASSY、the LCD, the
operation switch board ASSY, the operation switch harness, the LCD cover unit
12-5 Replacement of the printer control board ASSY、the printer、the printer cover unit
12-6 Replacement of the chin rest ASSY, the head rest cover, the chin rest sensor
harness, the chin rest motor ASSY
12-7
Replacement of the joystick ASSY
12-8 Replacement of the roller, the measurement start switch board ASSY, the
joystick handle unit
12-9
Replacement of the switching power supply, PC I/F board ASSY, the power
supply board ASSY
12-1
0
12-1
1
12-1
2
12-1
3
Replacement of the power supply switch
Replacement of the chin holder vertical movement switch board ASSY
Replacement of the measuring window filter, the face cover unit
Replacement of the base cover unit
Please pay attention to the items below when replacing the each unit.
（1）Insert the connector all the way seated when inserting the harness in the board at the time of
replacement of the board/harness. Also be careful about the harness being intervened.
（2）When driving screws in at where they originally had screw lock at the time of reassembling,
put it as they were.
（3）Make sure to check the performance and measurement accuracy after replacing each unit.
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