16. Image quality problem
Field Service Ver. 1.0 May 2006
214
magicolor 7450
T
roubleshooting
16.2 How to identify problematic part
• This chapter is divided into two parts: “Initial Check Items” and “Troubleshooting Proce-
dure by a Particular Image Quality Problem.”
• When an image quality problem occurs, first go through the “Initial Check Items” and, if
the cause is yet to be identified, go to “Troubleshooting Procedure by a Particular Image
Quality Problem.”
16.2.1
Initial Check Items
• If the printer is responsible for the image problem, let the machine produce a test print
and determine whether the image problem occurs in a specific single color or four colors
• Evaluation Procedure
4039F4C505DA
4 Colors
Mono Color
Image
Problem
Action
Result
Cause
Next Step
Lines, bands From [Service Menu], select [DIAGNOSIS
MENU]
→
[PRINT MENU]
→
[GRADATION],
and produce a test print. Is image problem
evident in each of all four colors?
YES
Printer,
4 colors
NO
Printer,
single color
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 ...