Samsung ML-2851ND/XAZ Service Manual page 73

3) Horizontal Black Band
Description: Dark or blurry horizontal stripes occur in the printing periodically.
(They may not occur periodically.)
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
1. Bad contacts of the voltage
terminals to toner cartridge.
Service Manual
Alignment & Troubleshooting
2. The rollers of toner
cartridge may be stained.
Charge roller = 26.7mm
Supply roller = 47.1mm
Develop roller = 35.2mm
Transfer roller = 47mm
Clean each voltage terminal of the
Charge, Supply, Develop and
Transfer roller. (remove the toner
particles and paper particles)
1. Clean the right Gear that has
relatively small gap of the teeth
in the OPC.
2. If the malfunction persists,
replace the toner cartridge.
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Samsung Electronics