Lexmark Optra E Service Manual - Page 64

Excessive Background, White Spots, Light Print

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4026-0XX Excessive Background Note: Poor development or poorly charged toner particles causes excessive background. This is more noticeable as the toner cartridge nears end of life. FRU Action 1 Toner Car- Be sure the toner cartridge and photoconductor tridge, Photo- unit are installed correctly. If installed correctly, conductor try a new toner cartridge and then a new photo- Unit conductor unit. If a new toner cartridge or photo- conductor unit does not correct the problem, replace the following FRUs one at a time in the order shown: HVPS Engine board White Spots FRU 1 Transfer Assembly Light Print Action Check the transfer assembly for any signs of broken parts, pitting, contamination or foreign objects attached to or in the area of the transfer roll. If no problem is found, replace the following FRUs one at a time in the order shown: Transfer Assembly HVPS FRU Action 1 Photoconduc- Be sure the photoconductor unit is correctly tor Unit installed. Check the cartridge for damage and pitted or contaminated contacts. If no problem is found, replace the photoconductor unit. 2-42

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4026-0XX
2-42
Excessive Background
Note:
Poor development or poorly charged toner particles causes
excessive background. This is more noticeable as the toner car-
tridge nears end of life.
White Spots
Light Print
FRU
Action
1
Toner Car-
tridge, Photo-
conductor
Unit
Be sure the toner cartridge and photoconductor
unit are installed correctly. If installed correctly,
try a new toner cartridge and then a new photo-
conductor unit. If a new toner cartridge or photo-
conductor unit does not correct the problem,
replace the following FRUs one at a time in the
order shown:
HVPS
Engine board
FRU
Action
1
Transfer
Assembly
Check the transfer assembly for any signs of
broken parts, pitting, contamination or foreign
objects attached to or in the area of the transfer
roll.
If no problem is found, replace the following
FRUs one at a time in the order shown:
Transfer Assembly
HVPS
FRU
Action
1
Photoconduc-
tor Unit
Be sure the photoconductor unit is correctly
installed. Check the cartridge for damage and
pitted or contaminated contacts. If no problem is
found, replace the photoconductor unit.