PC-D320/PC-D340/FAX-L400 Chapter 4: Maintenance and Service
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3.2 Gain Auto Adjustment
Performing Gain Auto Adjustment
In case of having replaced the SCNT board, the contact sensor, or the platen glass, check to
make sure that the platen glass cover is closed properly before implementing Gain Auto
Adjustment.
Procedure
(1) Select “TEST MODE” in Service Mode.
(2) Press the numeric key “2”, and select “CCD TEST”.
(3) Press the numeric key “0”,“8”, and Gain Auto Adjustment is performed. Be sure that
“OK” is indicated on the display.
(4) Press STOP/RESET key, and the display goes back to TEST MODE.
In case that the test result is NG, check the following and try the adjustment again.
(1) Be sure that the platen glass cover is closed properly.
(2) Be sure that the platen glass is attached properly.
(3) Check if dirt is stuck to the white sheet.
(4) Be sure that the cable is connected between the contact sensor and the SCNT board.
(5) Replace the contact sensor.
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