2-99
Confidential
■ One color band
<User Check>
- Clean the inside of the machine and the corona wire of each drum unit for all four colors.
- Return the cleaning tab of the corona wire to the position.
- The paper tray ground terminal provided in the main body may be dirty. Clean the contact
with a dry cloth.
- Refer to the User’s guide and remove the dirt on the exposure drum using a cotton swab.
- Replace the drum unit or toner cartridge with a new one.
- Clean the LED ASSY.
■ Downward fogging of solid color
■ Horizontal lines
Step Cause Remedy
1 LED flat cable connection
failure
Reconnect the LED flat cable correctly.
2 LED flat cable failure Replace the LED flat cable.
3 Bend of tray ground spring Replace the paper tray.
4 LED ASSY failure Replace the LED ASSY.
<User Check>
- Replace the toner cartridge with a new one.
Step Cause Remedy
1 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
2 Main PCB failure Replace the main PCB ASSY.
<User Check>
- This symptom might stop occurring after making
several prints.
- Refer to the User’s guide and remove the dirt on the
exposure drum using a cotton swab.
- Replace the drum unit or toner cartridge with a new
one.
Step Cause Remedy
1 Dirt on charged electrode Wipe dirt off.
2 Scratch and dirt on fuser unit Replace the fuser unit.
3 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
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Printing Specifications
