Dell 1135N Service Manual page 104

3) Horizontal Black Band
Description : Dark or blurry horizontal stripes occur in the printing periodically.
(They may not occur periodically.)
1. Bad contacts of the voltage
Service Manual
Alignment and Troubleshooting
terminals to developer.
2. The rollers of
developer may be stained.
OPC Drum : 75.5mm
Developing Roller : 35.2mm
Charging Roller : 26.7mm
Supply Roller : 47.5mm
Transfer Roller : 47mm
Pressure Roller : 75.4mm
Heat Roller : 77.5mm
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 developer.
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