Oki C941dn C911dn/C931dn/C941dn Troubleshooting Guide - Page 47

Print quality is poor

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Print quality is poor Memo zz If the problem is not solved using the following methods, contact your designated help desk. Symptom White stripe in perpendicular direction. Paper feeding direction Printing is blurred in perpendicular direction. Cause Troubleshooting LED head is unclean. Low toner. Deposit of foreign substances. Window film of image drum is unclean. Image drum has not been set correctly. LED head is unclean. Low toner. Paper not supported. Wipe LED head with a soft tissue paper. Replace the toner cartridge. Replace the image drum. Wipe window film with a soft tissue paper. Please set the image drum correctly. Wipe LED head with a soft tissue paper. Replace the toner cartridge. Use recommended paper. Printing Troubles 1 Troubleshooting Reference pages page 77 page 55 page 57 2 - Maintenance page 57 page 77 page 55 Basic Index Paper feeding direction Printing is light. The toner cartridge is not installed correctly. Re-install the toner cartridge. Low toner. Replace the toner cartridge. Paper is moist. Use paper stored at appropriate temperature and humidity. Paper not supported. Use recommended paper. Paper not supported. Type and thickness setting of paper is inappropriate. Correct [Media Weight] in the operation panel to the appropriate value. Or, change [Media Weight] to a thicker value than the present value. Recycled paper is used. Correct [Media Weight] in the operation panel to the appropriate value. Or, change [Media Weight] to a thicker value than the present value. Printing is blurred in some Paper contains moisture. Dry it. Use paper stored at appropriate parts. Solid printing will result temperature and humidity. in the appearance of white dots Inappropriate settings of [Paper Change the value of [Printer or lines. Black Setting] or [Paper Color Setting]>[Paper Black Adjust] Setting]. or [Paper Color Setting]. page 55 page 55 Basic Advanced Advanced Basic Advanced Stripes in perpendicular direction. There are dents on the image drum. Low toner. Replace the image drum. Replace the toner cartridge. page 57 page 55 Paper feeding direction - 47 -

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47
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Printing Troubles
Troubleshooting
1
2
Index
Maintenance
Print quality is poor
Memo
z
If the problem is not solved using the following methods, contact your designated help desk.
Symptom
Cause
Troubleshooting
Reference
pages
White stripe in perpendicular
direction.
Paper feeding direction
LED head is unclean.
Wipe LED head with a soft
tissue paper.
page 77
Low toner.
Replace the toner cartridge.
page 55
Deposit of foreign substances.
Replace the image drum.
page 57
Window film of image drum is
unclean.
Wipe window film with a soft
tissue paper.
-
Image drum has not been set
correctly.
Please set the image drum
correctly.
page 57
Printing is blurred in
perpendicular direction.
Paper feeding direction
LED head is unclean.
Wipe LED head with a soft
tissue paper.
page 77
Low toner.
Replace the toner cartridge.
page 55
Paper not supported.
Use recommended paper.
Basic
Printing is light.
The toner cartridge is not
installed correctly.
Re-install the toner cartridge.
page 55
Low toner.
Replace the toner cartridge.
page 55
Paper is moist.
Use paper stored at appropriate
temperature and humidity.
-
Paper not supported.
Use recommended paper.
Basic
Paper not supported.
Type and thickness setting of
paper is inappropriate.
Correct [Media Weight] in
the operation panel to the
appropriate value. Or, change
[Media Weight] to a thicker
value than the present value.
Advanced
Recycled paper is used.
Correct [Media Weight] in
the operation panel to the
appropriate value. Or, change
[Media Weight] to a thicker
value than the present value.
Advanced
Printing is blurred in some
parts. Solid printing will result
in the appearance of white dots
or lines.
Paper contains moisture. Dry it.
Use paper stored at appropriate
temperature and humidity.
Basic
Inappropriate settings of [Paper
Black Setting] or [Paper Color
Setting].
Change the value of [Printer
Setting]>[Paper Black Adjust]
or [Paper Color Setting].
Advanced
Stripes in perpendicular
direction.
Paper feeding direction
There are dents on the image
drum.
Replace the image drum.
page 57
Low toner.
Replace the toner cartridge.
page 55