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Troubleshooting
● Code : B-5 ● Vertical Thick/Dark Band 1/2
● Symptom :
-. Vertical Band for a Particular Color
-, Vertical Dark Band
● Possible Cause:
1. Dr.Gap defect
2. LSU window contamination
3. Charging defect by the charging roller contamination.
4. OPC, ITB Cleaning Blade defect.
● Troubleshooting method :
(1) If it is possible to disassemble the imaging unit, check if the DMA on Mag. Roller is distributed equally.
If or not, replace the imaging unit.
(1) Check if there is any contaminant on exposure window of the imaging unit.
[step1] Dr.Gap defect
[step2] LSU window contamination
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