Solution - Dell 2355DN Service Manual

4.2.3 Solution

4.3.2.1 Scanner
4.3.2.1(a)COPY
PROBLEM
White copy • Check the Scan-Cover open.
• Check shading profile.
Black copy • Check the CCD problem in Main
PBA.
• Check shading profile.
Defective image • Check shading profile.
quality • Check the gap between original and
scanner.
• Check printing quality.
Abnormal noise • Check the Scanner Motor and any
mechanical disturbance.
• Check the Motor Driver in Driver
PBA.
Service Manual
Alignment and Troubleshooting
ITEMS TO BE CHECKED HOW TO SOLVE
• Room light can transit a thin original.
• Execute the shading test in the diagnostic
mode.
• Check the CCD harness contact.
• Execute the shading test in the diagnostic
mode.
• Execute the shading test in the diagnostic
mode.
• The gap above 0.5mm can cause a blurred
image.
• See "Print" troubleshooting.
• Check the right position of the Scanner Motor,
and check the any mechanical disturbance in
the CCD carriaging part.
• If any driver is defective, replace it.
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