Uneven Density In Sub Scan Direction; Uneven Density In Main Scan Direction - Epson AcuLaser C9200N Service Manual

EPSON AcuLaser C9200N
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UNEVEN DENSITY IN SUB SCAN DIRECTION

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
1 Transfer Belt Fingerprints, oil, or other
Unit foreign matter is evident on
the Transfer Belt.
2 Transfer Belt is dirty or
scratched.
3 Terminal is dirty.
4 2nd Transfer 2nd Transfer Roller is
Roller installed properly.
5 2nd Transfer Roller is dirty or
scratched.
6 The problem has been
eliminated through the checks
of steps up to 5.
Troubleshooting
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4036fs4043c0 4036fs4044c0
Check Item Result
YES Clean with specified solvent.
(Refer to Chapter 6
MAINTENANCE (p.
YES Clean dirty belt with a soft
cloth.
Change Transfer Belt Unit that
has damages.
YES Clean.
NO Reinstall.
YES Change 2nd Transfer Roller
Unit. (p.169)
NO Change Transfer Belt Unit.
(p.162)
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UNEVEN DENSITY IN MAIN SCAN DIRECTION

A. Typical Faulty Images
B. Troubleshooting Procedure
Action Step Section
1 Transfer Belt
" Unit
331)")
2
3
4 2nd Transfer
Roller
5
6
Image quality problem
4036fs4046c0
4036fs4047c0
Check Item Result
Fingerprints, oil, or other YES Clean with specified solvent.
foreign matter is evident on (Refer to Chapter 6
the Transfer Belt. MAINTENANCE (p.
Transfer Belt is dirty or YES Clean dirty belt with a soft
scratched. cloth.
Change Transfer Belt Unit that
has damages.
Terminal is dirty. YES Clean.
2nd Transfer Roller is NO Reinstall.
installed properly.
2nd Transfer Roller is dirty or YES Change 2nd Transfer Roller.
scratched. (p.169)
→
The problem has been NO
eliminated through the checks (p.162)
→
of steps up to 5.
(Image Transfer,
Neutralizing).
Revision D
Action
"
331)")
Change Transfer Belt Unit.
Change High Voltage Unit
(p.230)
148
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