Lexmark X548 Series, Service Manual

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Diagnostic information
2-45
7525-63 x
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Print quality service checks
Note:
This symptom may require replacement of one or more CRUs (Customer Replaceable Units) designated
as supplies or maintenance items, which are the responsibility of the customer. With the customer's permission,
you may need to install a developer (toner) cartridge or photo conductor unit.
Service tip
Before troubleshooting any print quality problems, do the following:
1. Print a menu settings page, and check the life status of all supplies. Any supplies that are low should be
replaced.
To print a Menu Settings page from the home screen, navigate to:
> Reports > Menu Settings Page
Note:
Be sure and keep the original menu page to restore the customer's custom settings if needed.
2. On the menu page, make sure the following is set to the default level:
• Color Correction: Set to Auto.
• Print Resolution: Set to 1200 dpi (print quality problems should be checked at different resolution
settings).
•
Toner Darkness: Set to 4 (default).
•
Color Saver: Set to OFF.
•
RGB Brightness, RGB Contrast, RGB Saturation: Set to 0.
•
Color Balance: Select Reset Defaults to zero out all colors.
•
Check the paper type, texture and weight settings against what is loaded in the printer.
Once the printer has been restored to its default levels, do the following:
1.
Inspect the imaging unit for damage, including the developers and toner cartridges. Replace if damaged.
2.
If paper other than 20lb plain letter/A4 paper is being used, load 20lb plain letter/A4.
3.
Print the Print Quality pages to see if the problem remains. Look for variations in the print from what is
expected.
To print the quality pages:
a. Enter the Diagnostics Menu (Turn off the printer, press and hold
3
and
6,
turn
on the printer, and release the buttons when the progress bar appears.)
b. Navigate to
PRINT TESTS
>
Print Quality Pages
.
c.
Printing Quality Test Pages
appears and the pages print.
11
Using the subnet address supplied by the
network admin, assign a unique IP address to
the printer.
Note:
The printer IP address should match
the IP address on the printer driver.
Did this fix the problem?
Problem resolved. Go to step 12.
12 Is the device physically connected
(ethernet cable) to the network?
Go to step 13. Go to step15.
13
Try using a different ethernet cable.
Did this remedy the situation?
Problem resolved Go to step 14.
14
Have the network administrator check the
network drop for activity.
Is the drop functioning properly?
Replace the RIP board. See
“RIP board removal” on
page 4-19
.
Contact the network
administrator.
Step Questions / actions Yes No