Muratec MFX-2550 Field Engineering Manual page 264

No. Symptom
Paper skew.
9 1. If you re-load the document and make
2. Has the paper cassette been installed
3. Does the cassette have any malfunc-
10 When using the 1. If you print "Checkered Pattern", the
auto feeder, the
reception image
expanded.
2. If you replace the main control board,
11 When using the 1. If you print "Checkered Pattern", the
auto feeder, the
reception image
compressed.
2. If you pull out a paper from resist roller
3. The electromagnetic clutch is normal.
4. If you replace the main control board,
12 The printouts are 1. Are copied and test print images too
too light.
2. If you replace the toner or the drum
13 Clock malfunc- 1. Are there any errors in the clock set-
tion
2. If you replace the main control board,
What to confirm
more than 10 copies, paper skew still
occurs.
properly?
tions?
image will expands more vertically
than horizontally.
Note: The following causes are also
possible. The sender sent the
document data using unsuitable
documents like excessively thick
paper, no carbon paper, rear
carbon paper, and so on.
the symptom will be fixed.
image is more compressed vertically
than horizontally.
and the fuser, the friction is normal.
the symptom will be fixed.
light, or uneven density?
Note: The following causes are also
possible. The contrast set-
ting might be not appropriate.
Contrast irregularities are likely
on printouts of documents con-
taining thin lines or small blue
lettering.
cartridge, the symptom will be fixed.
ting process?
the symptom will be fixed.
Yes Check No. 2.
Solved.
No
Yes Check No. 3.
No Re-install it properly.
Yes Replace the cassette.
No Replace the machine.
Yes Check No. 2.
No The sender's problem.
(It might be caused by using unsuit-
able documents, or sender transmis-
sion problems.)
Yes Replace the main control board.
No Replace the machine.
Yes Check No. 2.
No The sender's problem.
(It might be caused by sender trans-
mission problems.)
Yes Check No. 3.
No Clean resist roller. Replace resist
roller or the fuser.
Yes Check No. 4.
No Replace the electromagnetic clutch.
Yes Replace the main control board.
No Replace the machine.
Yes Check No. 2.
No The sender's problem.
(Possible causes are inappropriate
contrast setting, using colored docu-
ments, poor line connection, using
unsuitable documents, or sender
transmission problems.)
Yes Replace the toner or the drum car-
tridge.
No Refer to the "Image Quality Prob-
lems".
Follow the instruction manual.
Yes
No Check No. 2.
Yes Replace the main control board.
No Replace the machine.
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Countermeasure