4. Alignment and Troubleshooting
3) Contamination on back of page
•
Description : The back of the page is contaminated.
Cause and Check Point
Solution
Dirty registration roller, pressure roller, feed roller, etc.
Any dirty rollers through the path of the paper.
Identify the roller which may cause the problem by
comparing the period of the contamination on images with
the size of rollers. Clean any dirt from the roller or replace
the dirty roller.
Check if the transfer roller is damaged or contaminated.
Replace the transfer roller and test again.
Check if paper transfer belt is damaged or contaminated.
Replace the ITB unit and test again.
4) Dark or Black image
•
Description : The black page is printed out.
Cause and Check Point
Solution
No charging voltage in the HVPS.
Check the connecting state between the Main PBA and
HVPS. Reconnect the harness.
Poor contact between toner cartridge and set contacts.
Clean the contacts as necessary. Replace any deformed
or damaged contacts.
HVPS is defective.
Replace the HVPS.
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