MINOLTA-QMS magicolor 6100 Series Service Manual page 394

8.5.9 Black Line
8.5.9.1
8.5.9.2
8.5.9.3
Page 1-80
Phenomenon
A fine black line appears in the printed image as shown in the print sam-
ple at the upper-right corner.
Main Causes
1. The corona wire in the charger unit is contaminated.
2. The OPC belt surface is damaged.
3. Foreign particles (paper dust, etc.) are stuck in between the cleaning
blade and OPC belt.
4. Debris adhering to the base of toner cartridge's developer roller con-
tacts the OPC belt.
OPC Belt Cartridge
Cleaning Belt
Fig. 8-78
Countermeasures
1. Remove the belt cartridge and clean the charger unit on the OPC.
2. Remove any particles adhering to the surface of developer roller.
3. Replace the belt cartridge with a new cartridge if steps 1 and 2 do not
resolve the problem.
Fig. 8-77
Charger Unit
magicolor 6100 Series Service Manual
April 2001