Muratec F-315 - Printout too Light; Printout too Dark; Blurred Background

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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