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Service Manual for OF5800
Chapter 4 Troubleshooting Procedures
The following provides guidelines for troubleshooting the print engine. Before removing any portion 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. If printer or print quality problems occur, check the following.
The unit should:
have the power cord connected.
be connected to a power source which is rated to machine specifications.
be installed on a flat, level surface.
receive good ventilation.
not be connected to an electrical circuit with other equipment or where voltages may vary.
not be installed near a direct heating or cooling source or vent.
not be exposed to high dust concentration.
not be exposed to direct sunlight
not be exposed to high temperatures, high humidity, steam or chemical fumes.
If the pages printed by the printer have an image problem shown below, follow the appropriate steps to
solve the problem.
Blank pages
Insure that the drum and toner cartridge are installed
correctly
Remove the Toner Cartridge and shake it a few times
to redistribute the toner inside. If the problem persists,
replace the Toner Cartridge.
Verify that an image is being placed on the drum by
printing a document and opening the printer cover
before the document completes printing. At this point
remove the drum and check for an image on the drum.
If there is not an image on the drum, the problem could
be caused by improper laser exposure. Replace the
print head unit, printer mechanical controller and/or the
main control pcb.
If an image is on the drum, but is not being transferred
to the recording paper, check the operation of the high
voltage power supply and the transfer roller.