4-12
4.12.3 Printout too light
Symptom: Printed image is faint or does not print solid.
Poor development
The drum cartridge or toner cartridge may be not installed correctly. Install
each cartridge correctly.
Replace the Toner cartridge
Replace the High Voltage Unit.
Clean the LED print head.
Defective Drum
Replace the Drum Cartridge.
Poor image transfer
Replace the Image Transfer Unit.
Replace the High Voltage Unit.
Replace the Main Control PCB.
4.12.4 Printout too dark
Symptom: Printed image is faint or does not print solid.
Poor development
The drum cartridge or toner cartridge may be not installed correctly. Install
each cartridge correctly.
Replace the Toner cartridge
Replace the High Voltage Unit.
Clean the LED print head.
Defective Drum
Replace the Drum Cartridge.
Poor image transfer
Replace the Image Transfer Unit.
Replace the High Voltage Unit.
Replace the Main Control PCB.
4.12.5 Blurred background
Symptom: Copies show a gray or dark background.
Poor development
Replace the High Voltage Unit.
Replace the Main Control PCB.
Replace the Toner Cartridge.
Replace the Drum Cartridge.
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