Epson Aculaser C9200N - 4-Color; Uneven Density in Sub Scan Direction; Uneven Density in Main Scan Direction

EPSON AcuLaser C9200N Revision D
Troubleshooting Image quality problem 148
Confidential
<4-COLOR>
UNEVEN DENSITY IN SUB SCAN DIRECTION
A. Typical Faulty Images
B. Troubleshooting Procedure
<4-COLOR>
UNEVEN DENSITY IN MAIN SCAN DIRECTION
A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section Check Item Result Action
1 Transfer Belt
Unit
Fingerprints, oil, or other
foreign matter is evident on
the Transfer Belt.
YES Clean with specified solvent.
(Refer to Chapter 6 "
MAINTENANCE (p. 331)")
2 Transfer Belt is dirty or
scratched.
YES Clean dirty belt with a soft
cloth.
Change Transfer Belt Unit that
has damages.
3 Terminal is dirty. YES Clean.
4 2nd Transfer
Roller
2nd Transfer Roller is
installed properly.
NO Reinstall.
5 2nd Transfer Roller is dirty or
scratched.
YES Change 2nd Transfer Roller
Unit. (p.169)
6 The problem has been
eliminated through the checks
of steps up to 5.
NO Change Transfer Belt Unit.
(p.162)
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Step Section Check Item Result Action
1 Transfer Belt
Unit
Fingerprints, oil, or other
foreign matter is evident on
the Transfer Belt.
YES Clean with specified solvent.
(Refer to Chapter 6 "
MAINTENANCE (p. 331)")
2 Transfer Belt is dirty or
scratched.
YES Clean dirty belt with a soft
cloth.
Change Transfer Belt Unit that
has damages.
3 Terminal is dirty. YES Clean.
4 2nd Transfer
Roller
2nd Transfer Roller is
installed properly.
NO Reinstall.
5 2nd Transfer Roller is dirty or
scratched.
YES Change 2nd Transfer Roller.
(p.169)
6 The problem has been
eliminated through the checks
of steps up to 5.
NO → Change Transfer Belt Unit.
(p.162)
→ Change High Voltage Unit
(Image Transfer,
Neutralizing).
(p.230)
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