Field Service Ver. 1.0 May 2006
16. Image quality problem
239
magicolor 7450
T
roubleshooting
16.3.24
4-Color: back marking
A. Typical Faulty Images
B. Troubleshooting Procedure
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AA
AA
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Step
Section
Check Item
Result
Action
1
Transfer Roller
Image Transfer Roller is scratched
or dirty.
YES
Change Transfer Roller.
2
Paper path
There is foreign matter on paper
path.
YES
Remove foreign matter.
3
Fusing Unit
Fusing Entrance Guide Plate is
scratched or dirty.
YES
Clean or change.
4
Lower Fusing Roller is scratched or
dirty.
YES
Change Fusing Unit.
5
Transfer Belt
Fingerprints, oil, or other foreign
matter is evident on the Transfer
Belt.
YES
Clean with specified solvent.
(See Maintenance.)
6
The problem has been eliminated
through the checks of steps up to 5.
NO
Change Transfer Belt.
→
Change High Voltage Unit
(Image Transfer, Neutralizing).
Содержание magicolor 7450
Страница 1: ...SERVICE MANUAL 2006 05 2006 05 Ver 1 0 Ver 1 0 FIELD SERVICE magicolor 7450 magicolor 7450 ...
Страница 3: ...ii Blank Page ...
Страница 26: ...SERVICE MANUAL 2006 05 Ver 1 0 FIELD SERVICE Main Unit magicolor 7450 magicolor 7450 ...
Страница 43: ...2 Product specifications Field Service Ver 1 0 May 2006 6 magicolor 7450 General Blank Page ...
Страница 288: ...SERVICE MANUAL 2006 05 Ver 1 0 FIELD SERVICE Lower Feeder Unit ...
Страница 293: ...1 Product specifications Field Service Ver 1 0 May 2006 2 Lower Feeder Unit General Blank Page ...
Страница 317: ...3 Other Field Service Ver 1 0 May 2006 26 Lower Feeder Unit Maintenance Blank Page ...
Страница 321: ...5 Sensor check Field Service Ver 1 0 May 2006 30 Lower Feeder Unit Adjustment Setting Blank Page ...
Страница 328: ...SERVICE MANUAL 2006 05 Ver 1 0 FIELD SERVICE Duplex Option ...
Страница 331: ...Duplex Option General Maintenance Adjustment Setting Troubleshooting Field Service Ver 1 0 May 2006 ii Blank Page ...
Страница 333: ...1 Product specifications Field Service Ver 1 0 May 2006 2 Duplex Option General Blank Page ...
Страница 345: ...6 Jam Display Field Service Ver 1 0 May 2006 14 Duplex Option Troubleshooting Blank Page ...