Low Image Density (Decrease Of Id) - Epson AcuLaser C9200N Service Manual

EPSON AcuLaser C9200N
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LOW IMAGE DENSITY (DECREASE OF ID)

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
1 Photoconductor Dirty on the outside.
Unit
2 PH Unit The surface of the PH
Window is dirty.
3 TCR Sensor The color TCR Sensor
window window on the LED Assy is
dirty.
4 Transfer Belt Transfer Belt makes positive
Unit contact with plates on rails.
5 Cam gear operates properly
6 Hopper Unit Connectors are loose.
7 Gear is cracked.
8 Replenish Execute the "Toner Admix" in
Toner the Maintenance Menu to
charge toner.
9 Adjust Density Change the setting value for
"Max Density" in the Printer
Adjust Menu.
Troubleshooting
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Check Item Result
YES Clean.
YES Clean with cleaning jig.
YES Clean.
NO Check and correct contacts.
NO Change Transfer Belt Unit.
(p.162)
YES Reconnect.
YES Change gear.
NO Go to next step.
NO Go to next step.
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Step Section
10
Action
Image quality problem
Check Item Result
The problem has been NO Change Photoconductor Unit.
→
eliminated through the checks
of steps up to 9.
(p.198)
→
→
(Image Transfer,
Neutralizing).
Revision D
Action
Change Controller Board.
Change PH Unit. (p.175)
Change High Voltage Unit
(p.230)
141
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