The Image Quality Problems; Blank; Black - Muratec MFX-1600 Field Engineering Manual

4.12. The Image Quality Problems

The following provides guidelines for troubleshooting the printer engine and actions to be taken. Before
removing any portions of the machine or making any internal adjustments, be sure power to the unit is
OFF. Suggested corrective actions should be performed in order as listed. Most conditions can be
corrected by performing routine preventative maintenance steps. If printer or print quality problems occur,
check the following.
The unit:
1. Should have the power cord correctly connected.
2. Should be connected to a power source which is rated to machine specifications.
3. Should be installed on a flat, level surface.
4. Should receive good ventilation.
5. Should not be connected to an electrical circuit with other equipment or where voltages may vary.
6. Should not be installed near a direct heating or cooling source or vent.
7. Should not be exposed to high dust concentration.
8. Should not be exposed to direct sunlight
9. Should not be exposed to high temperatures, high humidity, steam or chemical fumes.
4.12.1 Blank pages
Symptom: Page is solid white.
Poor development
Remove the toner cartridge and shake it a few times to redistribute the toner
The drum cartridge or toner cartridge may be not installed correctly. Install
each cartridge correctly.
Improper LED exposure
Replace the LED Print Head Unit.
Replace the Main Control PCB.
Improper charging
Replace the High Voltage Unit.
Replace the Main Control PCB.
4.12.2 Black pages
Symptom: Page is solid black.
Improper LED exposure
Improper charging
Replace the High Voltage Unit.
Replace the Main Control PCB.
inside. If the problem persists, replace the toner cartridge.
Replace the LED Print Head Unit.
Replace the Main Control PCB.
4-9