16. Image quality problem
Field Service Ver. 1.0 May 2006
226
magicolor 7450
T
roubleshooting
16.3.11
Monocolor: blank print, black print
A. Typical Faulty Images
B. Troubleshooting Procedure
Blank print
Black print
4036fs4038c0
4036fs4039c0
Step
Section
Check Item
Result
Action
1
Image Check
A blank print occurs.
YES
Check PH Unit connector for
proper connection.
2
Imaging Unit
Coupling of IU drive mechanism
is installed properly.
NO
Check and correct drive transmit-
ting coupling.
Change IU.
3
The PC Drum Charge Corona
voltage contact or PC Drum
ground contact of the Imaging
Unit is connected properly.
NO
Check, clean, or correct the con-
tact.
4
High Voltage Unit
(Image Transfer,
Neutralizing)
Connector is connected properly.
NO
Reconnect.
5
The problem has been eliminated
through the check of step 4.
NO
Change High Voltage Unit
(Image Transfer, Neutralizing).
→
Change Controller Board
→
Change PH Unit.
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 ...