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2-30 Service Manual
4044-XXX
Heavy background
Poor development or poorly charged toner particles cause excessive
background. This is more noticeable as the toner cartridge nears
end of life.
FRU Action
Models E310 & E12
Toner Cartridge
Make sure toner cartridge is
correctly installed and the high
voltage contacts are clean. If the
cartridge is installed correctly, try a
new cartridge.
Model E310
HVPS Contacts
HVPS Board
Engine/LVPS Board
Check the contacts for correct
installation and contamination where
contact is made with the toner
cartridge and HVPS Board. Clean as
necessary. If this does not correct
the problem, replace the following
FRUs one at a time in the order
shown:
HVPS Board
Engine/LVPS Board
Model E312
HVPS Contacts
HVPS Board
Engine Board
Check the contacts for correct
installation and contamination where
contact is made with the toner
cartridge and HVPS Board. Clean as
necessary. If this does not correct
the problem, replace the following
FRUs one at a time in the order
shown:
HVPS Board
Engine Board