Dell 2355DN Service Manual page 80

4.3.2.1(b) PC-Scan
PROBLEM
Scanning Error • Check the printer cable installed.
• Check how TWAIN driver is
installed.
• Check the USB signal level.
Defective image • Check shading profile.
Quality • Check the gap between original and
scanner glass.
• 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
• Check correct installation, and use standard
USB cable.
• Remove any other scanner driver.
• Reboot after reinstallation of the TWAIN driver.
• If USB signal level is defective, replace Main
PBA.
• 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.
4-40