OKIDATA DOC-IT3000, Service Manual

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Page: 158
Service Guide DOC-IT3000/4000
Chapter 3 Maintenance & Disassembly
Scanner Shading Adjustment
This procedure is performed when a new scanner unit is installed as a replacement for an old
scanner unit. This adjustment occurs in two steps: the white shading adjustment and the black
shading adjustment.
Refer to Section 3.2 of this Service Handbook for installation instructions for the scanner unit ().
· Verify that the top cover is closed.
· Verify that the paper tray contains paper.
· Verify that no error messages are displayed on the LCD control panel.
· Raise the scanner cover.
· Power ON the Doc-It while pressing the
START button on the scanner unit.
· The LCD will display:
Replace Unit?
1:PRN 2:SCN,STOP
Note:
If an error message appears, please refer to Section 4 of this Service Handbook ().
· Press the 2 key on the numeric keypad.
· The LCD will display:
Shading Adjust START or STOP
· Remove the scanner from the ADF.
· Place the scanner on a white surface.
· Press the
START key to select the white scanner shading adjustment. Press the STOP
key to cancel the white scanner shading adjustment.
· If the
START key is pressed, the LCD will display:
Set White Level Start or Stop?
· Press the START key to start the white scanner shading adjustment. Press the STOP
key to cancel the white scanner shading adjustment.
· If the
START key is pressed, the LED next to the Scanner key will begin to flash.
· The LCD will display:
White Level Shading Adjust
· When the LED next to the Scanner key stops flashing, you will perform the black
scanner adjustment. Place the scanner on a black surface.
· The LCD will display:
Set Black Level Start or stop?
· Press the START key to start the black scanner shading adjustment. Press the STOP
key to cancel the black scanner shading adjustment.
· If the
START key is pressed, the LED next to the Scanner key will begin to flash.
· The LCD will display:
Black Level Shading Adjust