Print Quality Service Checks; Using Print Quality Test Pages; Blank Page; Black Page - Lexmark X203N Service Manual

Print quality service checks

Note: Ensure cover is closed tightly. A gap in the opening may allow light to expose the photoconductor
resulting in a 'dirty' print.

Using print quality test pages

Blank page

FRU
Toner cartridge (not a FRU)
Printhead
LVPS/HVPS
Controller card
Toner electrodes (cable
assembly)

Black page

Note: Incorrect laser exposure or incorrect charging of the photoconductor causes an all-black page. Always
verify the same results from a different print cartridge assembly and developer before proceeding.
FRU
Toner electrodes (not a FRU)
LVPS/HVPS board
Controller card
CIS
Action
Remove the toner cartridge, and gently shake it to evenly distribute
the toner.
Check for cartridge damage.
Blank pages can be caused by a defective printhead assembly,
LVPS/HVPS, or controller card.
• Printhead errors typically result in MFP service errors.
• Blank pages typically are caused by the PC roll not being
properly discharged. Try a different PC kit.
Unplug the MFP and check continuity between the LVPS/HVPS
connection pads marked OPC and the corresponding pin inside the
MFP.
If there is not continuity, call the next level of service.
Try a different toner cartridge and PC kit.
If those fail, replace the LVPS/HVPS.
Action
Check the electrodes below the print cartridge assembly for
contamination or damage. Correct as necessary.
Check continuity between the cable connections on the contact tips
below the print cartridge assembly.
If continuity fails, call the next level of service.
With the MFP off, disconnect the LVPS/HVPS cable from J22 on the
controller card.
Turn the MFP on and verify +24 V dc on pins 8 and 9 of the cable.
Verify ground on pins 7, 12, and 14.
• If the voltage is incorrect, replace LVPS/HVPS board.
• If voltage is correct and the toner electrodes are good, replace
the controller card.
If the MFP prints a black page when copying a page but prints a job
from the host PC properly, see
page 2-24.
"Flatbed service check" on
Diagnostic information
7011-2xx
2-35