Lexmark X264 Service Manual

Diagnostics information 2-37
7013-XXX
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.
Heavy background
Poor development or poorly charged toner particles cause excessive background. This is more noticeable as 
the toner cartridge nears end-of-life.
FRUAction
Toner electrodes (not 
a FRU)Check the three rearward electrodes below the...

2-38  Service Manual 7013-XXX
Partial blank image/white spots (no repeating pattern) 
Variation in image density horizontally across page 
Poor fusing of image 
FRUAction
Toner cartridge (not a 
FRU) Remove the toner cartridge assembly, and gently shake the assembly to evenly distribute 
the toner. 
Check to make sure that the laser light path is not blocked.
If toner cartridge is low, then try a new one.
Paper (not a FRU)Make sure recommended media is being used.
Check the media settings in the printer...

Diagnostics information 2-39
7013-XXX
Light print 
White or black lines or bands 
Toner on back of page 
FRUAction
Toner cartridge (not a 
FRU)Make sure the toner cartridge and PC Kit are installed correctly and that the toner cartridge 
is not low on toner. 
If the problem continues, then install a new toner cartridge.
Recheck condition before replacing PC Kit, if necessary. 
Transfer roll  LVPS/HVPS card 
Check the transfer roll for signs of toner buildup and contamination.
Inspect the HVPS contact...

2-40  Service Manual 7013-XXX
Solving print quality problems
Note:  Refer to the print defects guide at the end of the manual for repeating defects.
Print quality problems 
ProblemCause/action
Light or blurred 
characters. Light print
See “Light print” on page 2-39.
The toner cartridge may be getting low on toner: 
• Remove the toner cartridge and print cartridge assembly. 
• Shake it from side to side to redistribute the toner. 
• Reinstall it, and recheck for condition.
• Make sure to use the...

Diagnostics information 2-41
7013-XXX
Toner smears or rubs 
off the page. • Toner is not being fused to the paper. Replace the fuser.
• Change the media texture setting in the driver. If special media is being used, such as 
card stock or labels, then be sure to select the correct media type.
• Try a different kind of paper. Paper designed for copiers gives the best quality fusing. 
The print is getting 
light, but the printer 
has not indicated it is 
low on toner. • Toner is becoming low in the...

2-42  Service Manual 7013-XXX
The printer is on and 
indicates ready, but 
nothing prints. • Make sure the USB cable is not damaged and is firmly plugged into the connector on 
the back of the printer.
• Make sure the toner cartridge assembly is installed properly.
• Print the menu page found under Utilities.
- If a menu settings page cannot be printed, then contact the next level of support.
- If a menu settings page can be printed, then the problem is one of the following:
•Computer 
•Software program...

Diagnostics information 2-43
7013-XXX
Printhead service check
Transfer roll service check 
Unexpected 
characters print, or 
characters are 
missing.• Ensure correct printer driver is being used.
• Select hex trace mode to determine what the problem is.
• Restore factory defaults. 
• Make sure the USB cable or USB cable is firmly plugged in at the back of the printer.
Jobs are not printing, 
and an error message 
is displayed. • The printer is waiting for an appropriate command.
• Make sure the print...

2-44  Service Manual 7013-XXX
Tray 2 service check
840.xx service check
FRUAction
Tray 2Turn the printer off.
Separate the printer from Tray 2.
Turn the printer on and check the voltages on connector J28 on the controller board. See 
the wiring diagram at the end of the service manual, or “Controller board connector pin values” on page 5-3 for the J31 connector.
Pins 1, 4: 3.3 V
Pin 2: 24 V
Pin 6: Ground
If the voltages are incorrent, then replace the controller board. If the voltages are correct, 
then...

Diagnostics information 2-45
7013-XXX
6
Replace the ADF cable. POR the machine 
into configuration mode. Go to the disable 
scanner menu item. See 
“Disable 
Scanner” on page 3-31. Select “Enable 
ADF/FB -Enabled and pressto save the 
change. POR the MFP to operating mode. 
Try running a copy from the ADF and 
flatbed.
Did the 840.xx error recur?
Go to step 7.Stop. Problem solved.
7Replace the ADF unit. See “ADF removal” 
on page 4-4. POR the machine into 
configuration mode. Go to the disable 
scanner...

2-46  Service Manual 7013-XXX
Black or blank page copy service check
CCD service check
Flatbed motor service check
StepQuestions / actionsYe sNo
1Print a menu page, or a page from the host. 
Is the page black?See “Networking service 
check” on page 2-34
Go to step 2.
2Is the copy an ADF scan?Go to step 3.Go to step 4.
3Run a flatbed copy.
Is it blank or black?
Go to step 5Go to step 4
4Did the sheet feed into the ADF?Go to step 5.
5Is the CCD ribbon cable properly connected 
to J2 on the controller...