Print Quality Problems - Konica Minolta BIZHUB 190F User Manual

Maintenance and Troubleshooting

16.2.11 Print quality problems

Problem
Pages are blank
Pages are black
Printouts are too light
ABCDE
ABCDE
ABCDE
ABCDE
ABCDE
Printouts are too dark
ABCDE ABCDE
ABCDE ABCDE
ABCDE ABCDE
ABCDE ABCDE
ABCDE ABCDE
Printouts have a blurred
background
ABCDE
ABCDE
ABCDE
ABCDE
ABCDE
bizhub 131f/190f
Possible cause
• The document is loaded incorrectly. Set the document face up
on the ADF or face down on the document glass.
• The toner cartridge may be defective. Remove the toner car-
tridge and check it for damage. If the problem persists, replace
the toner cartridge.
• The toner cartridge may be defective. Remove the toner car-
tridge and check it for damage. If the problem persists, contact
your local technical representative.
• The drum charge wire may be dirty. Open the front cover. To
clean the drum charge wire, pull the blue rod toward you, mak-
ing sure it fully extends. Then return the rod to its original posi-
tion. See page 16-5.
• A scanning contrast setting that is too light is selected. Select a
darker contrast setting.
• The toner cartridge may be out of toner, or the toner may be
very low. Remove the toner cartridge and shake it a few times
to redistribute the toner inside. If the problem persists, replace
the toner cartridge.
• The paper is damp. Replace the paper.
A scanning contrast setting that is too dark is selected. Select a
lighter contrast setting.
• The document glass or ADF glass is dirty. Wipe the glass with a
dry soft cloth.
• The toner cartridge may be defective. Remove the toner car-
tridge and check it for damage. If the problem persists, replace
the toner cartridge.
• The drum charge wire may be dirty. Open the front cover. To
clean the drum charge wire, pull the blue rod toward you, mak-
ing sure it fully extends. Then return the rod to its original posi-
tion. See page 16-5.
16
16-31