Dell 2355DN Service Manual - Page 80

B Pc-scan, Problem, Items To Be Checked, How To Solve

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Alignment and Troubleshooting 4.3.2.1(b) PC-Scan PROBLEM Scanning Error Defective image Quality Abnormal noise ITEMS TO BE CHECKED HOW TO SOLVE • Check the printer cable installed. • Check correct installation, and use standard USB cable. • Check how TWAIN driver is installed. • Remove any other scanner driver. • Reboot after reinstallation of the TWAIN driver. • Check the USB signal level. • If USB signal level is defective, replace Main PBA. • Check shading profile. • Execute the shading test in the diagnostic • Check the gap between original and mode. scanner glass. • The gap above 0.5mm can cause a blurred image. • Check printing quality. • See "Print" troubleshooting. • Check the Scanner Motor and any mechanical disturbance. • Check the right position of the Scanner Motor, and check the any mechanical disturbance in the CCD carriaging part. • Check the Motor Driver in Driver PBA. • If any driver is defective, replace it. 4-40 Service Manual

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Alignment and Troubleshooting
4-40
Service Manual
4.3.2.1(b) PC-Scan
PROBLEM
ITEMS TO BE CHECKED
HOW TO SOLVE
Scanning Error
• Check the printer cable installed.
•
Check correct installation, and use standard
USB cable.
•
Check how TWAIN driver is
installed.
• Remove any other scanner driver.
•
Reboot after reinstallation of the TWAIN driver.
• Check the USB signal level.
•
If USB signal level is defective, replace Main
PBA.
Defective image
Quality
• Check shading profile.
•
Check the gap between original and
scanner glass.
•
Execute the shading test in the diagnostic
mode.
•
The gap above 0.5mm can cause a blurred
image.
• Check printing quality.
• See “Print” troubleshooting.
Abnormal noise
•
Check the Scanner Motor and any
mechanical disturbance.
•
Check the right position of the Scanner Motor,
and check the any mechanical disturbance in
the CCD carriaging part.
•
Check the Motor Driver in Driver
PBA.
• If any driver is defective, replace it.