Vertical dark lines or streaks
ABCDE
ABCDE
ABCDE
Leading edge
Trailing edge
Note:
Before solving the problem, print the print quality test pages. From the home screen, touch
Settings
>
Troubleshooting
>
Print Quality Test Pages
.
Action
Yes
No
Step 1
a
Depending on your operating system, specify the paper type,
texture, and weight from the Printing Preferences or Print
dialog.
Notes:
•
Make sure that the settings match the paper loaded in
the tray.
•
You can also change the settings on the printer control
panel.
b
Print the document.
Do vertical dark lines or streaks still appear on prints?
Go to step 2.
The problem is
solved.
Step 2
a
Load paper from a fresh package.
Note:
Paper absorbs moisture due to high humidity. Store
paper in its original wrapper until you use it.
b
Print the document.
Do vertical dark lines or streaks still appear on prints?
Go to step 3.
The problem is
solved.
Step 3
a
Inspect the test pages to determine which color is affected.
b
Remove, and then reinstall the photoconductor unit.
Warning—Potential Damage:
Do not expose the
photoconductor unit to direct light for more than one minute.
Extended exposure to light can cause print quality problems.
Warning—Potential Damage:
Do not touch the
photoconductor drum. Doing so may affect the quality of
future print jobs.
c
Print the document.
Do vertical dark lines or streaks still appear on prints?
Go to step 4.
The problem is
solved.
Troubleshooting
116
Summary of Contents for CS921
Page 1: ...CS921 CS923 CS927 User s Guide August 2017 www lexmark com Machine type s 5059 Model s 130 530...
Page 43: ...5 Insert the new toner cartridge 6 Remove the waste toner bottle Maintaining the printer 43...
Page 48: ...8 Insert the waste toner bottle and then close the door Maintaining the printer 48...
Page 71: ...Below the fuser area Duplex area Clearing jams 71...
Page 76: ...2 Open door J 3 Open door H Clearing jams 76...
Page 126: ...5 Remove the controller board shield Upgrading and migrating 126...
Page 134: ...7 Connect the tray connector to the printer 8 Open trays 2 and 3 Upgrading and migrating 134...
Page 139: ...9 Remove the stabilizing feet from the tray Upgrading and migrating 139...
Page 143: ...17 Secure the tray cable with the clamp Upgrading and migrating 143...
Page 155: ...8 Attach the nisher to the printer Upgrading and migrating 155...
Page 164: ...Laser advisory label The following laser notice label is affixed to the printer Notices 164...
