Vertical Black Band - Samsung MULTIXPRESS CLX-9251 Series Service Manual

4. Troubleshooting

4.6.1. Vertical Black Band

A. Typical faulty images
B. Troubleshooting procedure
Step Cause
1 Charge Roller(CR) is contaminated.
2 ITB belt is contaminated.
• ITB cleaning is poor.
• ITB Cleaning-Blade is partially broken.
3 Scanner unit is contaminated.
• Scan glass contamination.
• Mirror contamination.
• CCD sensor contamination.
4-207
Action
Check if CR is contaminated or not.
If there are some problems, replace Drum unit.
(Refer to 3.3.2.1.)
Check if ITB belt is contaminated or not.
If there are some problems, replace the ITB Cleaner.
(Refer to 3.2.2.3.)
Wipe the contaminated part surface with a soft cloth.
(Refer to 3.3.29.4.)
CAUTION
Fragile parts!
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