Alignment & Troubleshooting
Service Manual
4-68
Samsung Electronics
Error Status
Check
Solution
Partial blank image
(periodic)
1. Develop roller scar or particle.
2. Scar or particle. (94.3 mm)
3. Transfer roller scar or particle.
(56.6 mm)
1. Replace toner cartridge.
2. Replace drum cartridge.
3. Replace transfer roller.
Different image
density
(left and right)
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1. Charge roller’s pressure force
unbalance
2. Dev. roller and OPC or Dev. roller and
blade’s pressure force unbalance
3. Transfer roller’s pressure force
unbalance of each side
1. Replace drum cartridge.
2. Replace toner cartridge and drum
cartridge.
3. Check left and right spring of transfer
roller and the spring pressing the
toner cartridge inside the machine
Horizonral band
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1. Unstable high voltage contact
2. Charge roller’s contamination
3. Contamination of heat roller
4. Malfunction of LSU
1. Clean each contact and check good
contact
2. Clean charge roller
3. Replace fuser unit
4. Check Main PBA.