Image Quality Troubleshooting - Minolta MAGICOLOR 2300 Service Manual

4.

Image Quality Troubleshooting

• If an image quality problem occurs, replace the toner cartridge and drum cartridge with
new ones, and then determine whether the cause of the problem is due to one of the car-
tridges or another part of the main unit.
Symptom
Blank print
Faulty PC drum
Improper laser exposure
Poor developing bias
0951o211
Black print
Improper laser exposure
Improper charging
0951o213
White spots
Damp paper
Poor image transfer
0951o220
Cause
Replace the drum cartridge.
Replace the print head unit.
Replace the master board
(PWB-A).
Replace the controller control
board.
Replace the master board
(PWB-A).
Replace the controller control
board.
Replace the print head.
Replace the controller control
board.
Replace the master board
(PWB-A).
Replace the controller
control board
Change the paper.
Replace the Second image
transfer roller.
Replace the master board
(PWB-A).
Replace the transport image
transfer belt unit.
Replace the controller control
board.
168
Remedy