Low Image Density - Konica Minolta magicolor 2490MF Service Manual

Field Service Ver. 1.0 Jul. 2006
17.2.12

Low image density

A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Drum cartridge
2 PH unit
3
Transfer belt unit
4
5 2nd transfer roller Is the terminal dirty?
6 Paper
7 IDC sensor
8 -
ABCDE
ABCDE
ABCDE
ABCDE
ABCDE
Check Item
Is the outside dirty?
Is the window surface dirty?
Is the contact on the rail of the
transfer belt unit in good contact
with the mating part?
Is the contact dirty?
Is the paper damp?
Is the sensor dirty?
The problem has been eliminated
after performing step 7.
17. Miscellaneous errors
4036fs4036c0
Result
YES Clean.
YES Clean.
NO Check or correct contact.
YES Clean.
YES Clean.
Replace the paper with new
YES paper that has just been
unwrapped.
YES Clean.
Replace the toner cartridge.
→ Replace the transfer belt unit.
→ Replace the 2nd transfer roller.
→ Replace the PH unit.
NO
→ Replace the IDC sensor.
→ Replace the printer control
board
→ Replace the hight voltage unit.
Action
261