MINOLTA-QMS magicolor 6100 Series Service Manual page 399

8.5.14 Toner Drop
Cleaning
Brush
Transfer Drum
magicolor 6100 Series Service Manual
8.5.14.1 Phenomenon
Toner stain on the image is caused by loose toner in the printer as shown
in the print sample at the upper-right corner.
8.5.14.2 Main Causes
1. Toner stain on the transfer drum is due to the breakdown of the waste
toner feeder from the drum cleaner.
a. Mylar in the waste toner feeder is deformed.
b. Waste toner is not being collected by the waste toner feeder.
2. Toner adhering to the developer roller drops onto the OPC belt.
Cleaning
Roller
Waste Toner
Feeder
8.5.14.3 Countermeasures
1. Examine the cleaning brush and waste toner feeder.
a. Clean the area of the cleaning brush.
b. Check if the seal is deformed or damaged. If any deformation or
damage, replace the waste toner feeder with a new feeder.
c. Check for blockage in the waste toner auger. Vacuum and remove
the excess waste tone.
2. Remove and clean the toner cartridge.
3. Replace the belt cartridge with a new cartridge if steps 1 and 2 do not
resolve the problem.
Developer
Roller
Toner Drop
Fig. 8-88
Fig. 8-87
Toner Cartridge
Page 8-85