Poor Color Reproduction - Epson AcuLaser C9200N Service Manual

EPSON AcuLaser C9200N
<4-COLOR>

POOR COLOR REPRODUCTION

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
1 Paper Paper is damp.
2 Transfer Belt Terminal is dirty.
Unit
3 2nd Transfer 2nd Transfer Roller is
Roller installed properly.
4 Charge Neutralizing Cloth is
not separated and ground
terminal is connected
properly.
5 IDC Sensor Sensor is dirty.
6 Adjust Density Change the setting value for
"Max Density" in the Printer
Adjust Menu.
Troubleshooting
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Check Item Result
YES Change paper to one just
unwrapped from its package.
Install Paper Dehumidifying
Heater.
YES Clean.
NO Reinstall.
NO Correct or change.
YES Clean with blower brush.
NO Go to next step.
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Step Section
7
Action
Image quality problem
Check Item Result
The problem has been NO Change Transfer Belt Unit.
eliminated through the checks (p.162)
→
of steps up to 6.
(p.198)
→
(Image Transfer,
Neutralizing).
Revision D
Action
Change Controller Board.
Change High Voltage Unit
(p.230)
150
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