19. Image quality problem Field Service Ver. 1.0 Jun. 2008
346
Troubleshooting
19.3.23 Printer monocolor: colored spots
A. Typical faulty images
B. Troubleshooting procedure
A02EF4C524DA
AA
Step Section Check item Result Action
1
Imaging unit Developing bias contact terminal
makes good connection.
NO Clean contact terminal and
check terminal position.
2
The surface of the PC drum is
scratched.
YES Change imaging unit.
3 Dirty on the outside. YES Clean.
d-Color MF201
Service Manual Y109660-1
d-Color MF201