16. Image quality problem
Field Service Ver. 1.0 May 2006
224
magicolor 7450
T
roubleshooting
16.3.9
Monocolor: colored spots
A. Typical Faulty Images
B. Troubleshooting Procedure
AA
AA
4036fs4052c0
Colored spots
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.
Summary of Contents for magicolor 7450
Page 1: ...SERVICE MANUAL 2006 05 2006 05 Ver 1 0 Ver 1 0 FIELD SERVICE magicolor 7450 magicolor 7450 ...
Page 3: ...ii Blank Page ...
Page 26: ...SERVICE MANUAL 2006 05 Ver 1 0 FIELD SERVICE Main Unit magicolor 7450 magicolor 7450 ...
Page 43: ...2 Product specifications Field Service Ver 1 0 May 2006 6 magicolor 7450 General Blank Page ...
Page 288: ...SERVICE MANUAL 2006 05 Ver 1 0 FIELD SERVICE Lower Feeder Unit ...
Page 317: ...3 Other Field Service Ver 1 0 May 2006 26 Lower Feeder Unit Maintenance Blank Page ...
Page 328: ...SERVICE MANUAL 2006 05 Ver 1 0 FIELD SERVICE Duplex Option ...
Page 333: ...1 Product specifications Field Service Ver 1 0 May 2006 2 Duplex Option General Blank Page ...
Page 345: ...6 Jam Display Field Service Ver 1 0 May 2006 14 Duplex Option Troubleshooting Blank Page ...