Epson AcuLaser M2000D, Service Manual

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EPSON AcuLaser M2000D/M2000DN/M2010D/M2010DN Revision B
TROUBLESHOOTING Troubleshooting 60
Confidential
DIRT ON THE BACKGROUND
The background is dark or dirty, or toner smudges appear partially on the printout.
TONER SMUDGES
Toner smudges appear on the top edge or non-printed side of the page.
WAVY IMAGE
The printed image on the upper right side (scanning start position) of the page is wavy.
Sample Possible cause Checkpoint & Remedy
Electric potential on the
drum surface is not
normal. Replace the photoconductor unit. (See P. 82)
The main charger grid is
faulty. Clean the main charger grid. (See P. 152)
The developing roller in
the developing unit is
faulty. Replace the developing unit. (See P. 82)
Sample Possible cause Checkpoint & Remedy
Paper feed and
conveying paths are
contaminated with toner. Check the following points for toner smudges, and
clean the points if necessary.
„
Paper shoot guide
„
Paper conveying path
„
Photoconductor unit
„
Bottom part of the developing unit
„
Inlet of the fuser unit
The transfer roller is
faulty. Clean the transfer roller if it is contaminated with
toner. Or print low coverage pages continuously
until the smudges disappear.
ABC
123
ABC
123
Sample Possible cause Checkpoint & Remedy
The polygon motor in
the developing unit is
faulty. Replace the laser scanner unit. (See P. 119)
The Main Board Assy. is
faulty. Replace the Main Board Assy. (See P. 92)
Line is wavy