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Troubleshooting
● Code : B-5 ● Vertical Thick/Dark Band 2/2
● Troubleshooting method :
(2) Check if there is any contaminant on exposure path in set.
(3) Check if the LSU window is contaminated.
- Clean the LSU window or replace the LSU.
(4) If the problem persists, replace the imaging unit.
Check if the charging roller and cleaning roller are contaminated. If it is contaminated, replace the imaging
unit.
Check if there is a contaminant on OPC surface or ITB surface. Replace the imaging unit or ITB.
[Step 3] Charging defect by the charging roller contamination.
Y
M
C
K
OPC
Charging Roller
Cleaning Roller
[step4] OPC, ITB Cleaning Blade defect.
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