Dell 2135CN, Service Manual

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Chapter 2 Operation of Diag.
Version 1 2008.02.01
4. The Kind of Diag. and Contents of a Test
4.1 FAX Scanner Diag.
4.1.1 Executing FAX Scanner Diag
1) Turn off the power.
2) Turn on the power while holding down “ ” and “ ” keys.
3) Release the fingers from the keys when “ Please wait...” is displayed.
4) The “Printer” and “FAX /Scanner” are displayed. (Entered the Customer Diag. mode.)
5) Press “ ” to select “FAX /Scanner”, and press “
3
” key. (Entered the FAX /Scanner Diag.
mode.)
6) Press “ ” or “ ” key to select the test item.
7) Press “
3
” key twice to execute the test.
To return to one step higher menu, press "CANCEL" key.
4.1.2 Information
- Scan Counter
The value of scan count is displayed. FB: Scanning of platen mode/ADF: Scanning of ADF mode.
4.1.3 Scanner Maintenance
- White Balance
Enables automatic calibration of the correction value for platen scanning (FB) and ADF scanning
(ADF).
- Shading Parameter
Adjusts the white balance value read from the white reference plate.
Coeff: White reference plate value after shading correction.
Target: Target value of Coeff.
Do not change this setting; the image quality may be affected.
- Registration Param.
Adjusts the side and lead registrations during document scanning.
Do not change this setting; the image quality may be affected.
- Auto Registration
Sets whether or not to auto-adjust the registration.
- Vertical Scan Mag.
Adjusts the scaling in the sub-scanning direction.
Do not change this setting; the image quality may be affected.