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 toner cartridge assembly for contamination, 
damage, or a short to ground. Correct as necessary. 
Check continuity between the cable (DEV, TAR, and doctor blade) connection PCN3 and 
on the contact tips below the toner cartridge assembly.
• If continuity fails, then call the next level of service.
LVPS/HVPS board Controller board Miscellaneous cables
With the printer off, disconnect the LVPS/HVPS cable from J22 on the controller board. 
Turn the printer on, and verify +24 V dc on pins 17 and 19 of the cable. 
Verify +5 V dc on pins 1, 3, 5, 13, and 15.
Verify ground on pins 10, 12, 14, 16, and 18. 
• If any of the values are incorrect, then replace LVPS/HVPS board.
• If the grounds are incorrect, then check ground paths.
• Check continuity in the cable. If the cable is bad, then call the next level of support.
• If the values are correct and the toner electrodes are good, then replace the controller 
board. 
• See the “LVPS/HVPS service check” on page 2-29 and the “Controller board service check” on page 2-26, if necessary.
FRU Action
Toner cartridge (not a 
FRU) 
PC Kit (not a FRU)Check the toner darkness setting in the driver. Try a lower setting.
Make sure the toner cartridge and PC Kit are correctly installed and the high voltage 
contacts are clean. 
If the toner cartridge and PC Kit are installed correctly, then try a new PC Kit first and then 
toner cartridge.
LVPS/HVPS  
Controller boardCheck the contacts for correct installation and contamination where contact is made 
between the print cartridge assembly and spring contacts which connect to the LVPS/HVPS 
board at CN203. Clean as necessary. 
If this does not correct the problem, then replace the following FRUs one at a time in the 
order shown:
• LVPS/HVPS board (See “Black page” on page 2-37 for pin values.)
• Controller board  
						

							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 driver. A heavier media may require higher heat to 
properly fuse.
FRUAction
PC Kit (not a FRU)The charge roll may have an unbalanced force against the PC (photoconductor) drum. 
Try a new PC Kit.
Transfer roll Note: Do not touch the transfer roll except at its ends. Place a sheet of paper over the roll to 
prevent damage from finger oils or hand lotion.
Check the springs in the left and right transfer roll bearings. The bearing assemblies should 
support the transfer roll, applying evenly distributed forces to the PC drum. 
Replace the transfer roll assembly if the springs or bearings show signs of damage, or 
fatigue. 
Inspect the transfer roll for signs of wear, damage or contamination. 
Replace as necessary.
FRUAction
Fuser The fuser may not be operating at the proper temperature to fuse the toner to the paper. 
See“LVPS/HVPS service check” on page 2-29 for more information. Try changing the setting to heavier paper or even card stock.
Media (not a FRU)Make sure recommended media is being used.
Check the media settings in the printer driver. 
						

							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 (transfer roll) for contamination. 
Verify the high voltage cable is plugged into the LVPS/HVPS.
If all components appear free of contamination, then replace the following FRUs one at a 
time in the order show n: 
• Transfer roll
• LVPS/HVPS card
FRUAction
Print cartridge 
assembly (not a FRU) Developer drive 
coupling assembly Main motor gear drive
Banding appears as light or dark horizontal lines on a uniformly gray page or on a page with 
a large area of graphics. Banding is primarily due to a variation in the speed of the media as 
it feeds through the printer, especially in the developer and transfer process. It may also be 
a result of overly dry or moist environments.
With the printer off, check to make sure that the laser beam is not blocked.
Inspect the toner cartridge and paper feed components, especially the drive coupler and 
drive gears for debris, binds, or damage.
FRUAction
Photoconductor kit (not 
a FRU)Print a menu page found under Utilities, and check settings for media type.
Inspect the overall paper path for signs of spilled toner. 
Gently clean the contaminated areas with a soft cloth.
FuserInspect the fuser for signs of contamination. 
Replace the fuser as necessary.
Transfer rollA transfer roll contaminated with toner can cause toner to transfer to the back of pages. 
Inspect the transfer roll for contamination and its cable for continuity.
HVPS or controller 
boardLoss of the proper high voltages can cause excessive toner to contaminate the transfer 
roller. None of these voltages can be measured, but the contacts and continuities can be 
checked. To check the lower voltage, see J502 on the wiring diagram. Replace the LVPS/
HVPS or controller board as necessary. 
						

							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 recommended print media (see media types and sizes in the 
User’s Guide).
• Use MarkVision™ Professional to define the custom type setting for media type, media 
texture, or media weight.
• The toner cartridge or PC Kit may be defective. Replace the PC Kit first, and recheck.
Blurred characters 
Blurred images, including characters, are usually caused by a defective printhead.
Vertical white lines
See “Vertical streaks” on page 2-40.
Vertical white lines may be caused by the laser beam, which may be partially blocked. With 
the printer off, clear the path or clean the lens. The toner cartridge or fuser may be 
defective. Try a different toner cartridge. Inspect the fuser at its entry for debris. 
Toner smudges 
appear on the front or 
back of the page.• Make sure the media is straight and unwrinkled.
• Replace the PC Kit, and recheck before replacing the toner cartridge. See “Toner on back of page” on page 2-39 for more information. 
Vertical or horizontal 
streaks appear on the 
pageVertical streaks
Something could be caught between the PC kit and the fuser. Check the paper path around 
the fuser entry. Try a different toner cartridge.
Vertical white lines may be caused by the laser beam, which may be partially blocked. With 
the printer off, clear the path or clean the lens. The toner cartridge or fuser may be 
defective. Try a different toner cartridge. Inspect the fuser at its entry for debris. 
Horizontal streaks
The toner cartridge or the fuser may be the cause due to excessive page count or defect. 
Replace as needed.
If the lines are parallel and match the two intended ghost images, then the Form Type may 
be incorrectly set. Check those settings.
The PC cleaner sump may be full. Replace the PC kit. 
						

							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 cartridge.
• The Toner Low message does not display if the 1,500-page toner cartridge is installed.
• Remove the toner cartridge, and gently shake it from side to side to redistribute the 
toner.
• Replace the toner cartridge.
The Toner Low 
message displays.• Remove the toner cartridge, and gently shake it from side to side to redistribute the 
toner. 
• Replace the toner cartridge.
Solid black areas on 
transparencies• There is a mismatch in the transparency and what the software is expecting.
• Choose a different fill pattern in the software program.
• Remove the toner cartridge, and gently shake it from side to side to redistribute the 
toner.
• Try a different type of transparency.
• Replace the toner cartridge.
Faint images or 
repetitive spots appear 
on the page.• Select a different media type or form type setting from the printer driver.
• Try a different type of paper. Media designed for copiers gives the best quality.
• Replace the toner cartridge.
Pages are blank. • The print cartridge may be out of toner or defective. Replace the cartridge.
• There may be a software error. Re-initialize the printer by turning it off and back on.
• With the printer off, check the printhead beam path. If clear, then check for a printhead 
error on POR. See “Printhead service check” on page 2-43.
• Also, see “Blank page” on page 2-36.
Print quality problems (continued)
Problem Cause/action 
						

							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 
•Cable
•(USB only) A failed controller board. Replace card.
Note: Test by unplugging USB and plugging it with the printer on. If the computer indicates 
“unknown device,” then replace the controller board.
Toner Low light is on 
and printing stops. If a 3.5K or more page toner cartridge is being used and the Toner Low alarm is set to on, 
then the printer stops printing until the toner cartridge is replaced.
The Error light alone is 
on.Make sure the front printer cover is closed. 
The Toner Low light is 
blinking, and the Error 
light is on.• Make sure the toner cartridge is installed correctly. 
• Install a new toner cartridge.
The media skews or 
buckles.• Tray is overfilled or media is too loose.
• Don’t overfill Tray 1 or the optional Tray 2 (see media capacities in the media types and 
sizes table in the User’s Guide).
• Make sure the paper guides are flush against the edges of the media.
The media sticks 
together, resulting in 
the printer feeding 
multiple sheets. • The friction between sheets is too high.
• Remove the media from Tray 1 or Tray 2, and fan it.
• Don’t overfill Tray 1 or the optional Tray 2 (see media capacities in the media types and 
sizes chart in the User’s Reference).
The media fails to feed 
from Tray 1.• Frictional force between tires and media is less than resisting force.
• Remove the media from Tray 1, and fan it.
• Make sure Tray 1 is selected from the printer driver. Do not overfill the tray.
• Check the condition of the rubber on the paper feed rolls. Replace if worn or 
contaminated.
• Verify that the ACM clutch is functioning correctly. 
The media fails to feed 
from the optional 
Tray
 2. 
• Incorrect tray selection or inadequate picking force by tires.
• Make sure the correct tray and media type are selected from the driver.
• Make sure the tray is pushed all the way in.
• Remove the media from the optional Tray 2, fan it, and reload.
• Check the rubber on the paper feed tires for dirt or any other debris. Replace as 
necessary.
• Check the paper path in the tray for burrs or debris that may hinder media movement. 
• Make sure the media does not exceed the stack height indicator.
Load Paper displays 
even though there is 
media loaded in the 
optional Tray 2. • The input sensor does not sense media after picking.
• Make sure the tray is pushed all the way in. 
•Press.
• Check the feed tires. (See two preceding actions.)
The printer does not 
print after a paper jam 
has been cleared. • The printer is waiting on the next command.
• Clear all jams.
• Press and release, or open and close the printer cover to restart the printer.
• Make sure the print cartridge assembly is installed properly.
Print quality problems (continued)
Problem Cause/action 
						

							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 cartridge assembly is installed properly.
• Make sure the printer front cover is closed.
While in PostScript 3 
emulation, the printer 
is flushing data (an 
error message is 
displayed).• Ensure the correct PostScript driver is being used.
• The printer doesn’t have enough memory to print the job. Install more memory.
FRUAction
Printhead
Note: New printhead 
must be aligned. See 
“Printhead assembly 
electronic 
adjustment” on 
page 3-23.
Turn the printer off. 
Disconnect the printhead cables from J12 and J8 on the controller board. 
Turn the printer on with the front door closed. 
On the controller board, verify +5 V dc on pin 10 at J12 and +5 V dc on pins 1, 2, and 3 at 
J8. 
Verify grounds on pins 2, 4, and 7 at J12 and on pin 4 at J8. 
• If voltages or grounds are incorrect, then check the controller board. See “Controller board service check” on page 2-26 for more information. 
• If voltages are correct, then replace the printhead (comes with cables). 
FRUAction
Transfer roll
Note: Do not touch the transfer roll except at its ends. Place a sheet of paper over the roll to 
prevent damage from finger oils or hand lotion.
Check the springs in the left and right transfer roll bearings. Do not try to move the left 
spring. The bearing assemblies should support the transfer roll, applying evenly distributed 
forces to the PC drum. 
Replace the transfer roll assembly if the springs or bearings show signs of damage or 
fatigue. 
Inspect the transfer roll for signs of wear, damage,. or contamination. 
Replace as necessary.
Print quality problems (continued)
Problem Cause/action 
						

							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 try using Tray 2 again. If the printer error persists, then replace Tray 2.
StepQuestions / actionsYe sNo
1POR 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 press  to 
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 2.Stop. Problem resolved.
2Re-enter Configuration mode, scroll to and 
select the Disable Scanner menu item.
Does the screen display ADF Disabled or 
Auto Disabled?
Go to step 3.Go to step 8.
3Check the ADF cable connections on the 
ADF relay card and connector J4 on the 
controller board. Also inspect the cable 
connections on JFBM1, J1 and J2 on the 
controller board.
Are the connections properly connected?
Go to step 5.Go to step 4.
4Properly connect the connections on the 
ADF relay card and controller board. 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 press  to 
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 5.Stop. Problem solved.
5Check the continuity on the ADF cable. 
Is there continuity?
Go to step 7.Go to step 6. 
						

							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 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. 
Run a copy from the ADF.
Did the 840.xx error recur?
Go to step 8.Stop. Problem solved.
8Inspect JFBM1, J1 and J2 on the controller 
board.
Are the connections properly connected?
Go to step 10.Go to step 9.
9Properly connect all the connections.
Did the 840.xx error recur?
Stop Problem solved.Go to step 10.
10Replace the flatbed unit. See “Flatbed 
removal” on page 4-24. 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. 
Run a copy from the flatbed.
Did the 840.xx error recur?
Go to step 11.Stop. Problem solved.
11Replace the controller board. See 
“Controller board removal” on page 4-13.
Did this fix the problem?
Problem solved.Contact second-level 
support.
Step Questions / actions Yes No 
						

							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 board?Go to step 6.Properly connect the ribbon 
cable to J2.
6Check for +14VDC on Pin 33 and 34 on 
connector J2. Pin 31 and 32 are +5VDC. 
Are the voltages present?Replace the flatbed unit. 
See 
“Flatbed removal” on 
page 4-24.
Replace the controller 
board. See 
“Controller 
board removal” on 
page 4-13.
StepQuestions / actionsYe sNo
1Restart the device, and retry the scan / copy 
job. Repeat this step with a few copy jobs.
Does the error return?
Go to step 2.No issue.
2Is the CCD ribbon cable properly connected 
to J2 on the controller board?Go to step 3.Properly connect the ribbon 
cable to J2.
3Replace the flatbed unit. See “Flatbed 
removal” on page 4-24.
Did this resolve the issue?
Problem resolved.Replace the controller 
board. See 
“Controller 
board removal” on 
page 4-13.
StepQuestions / actionsYe sNo
1Ensure that the flatbed motor cable (JFBM1) 
is connected. Is the cable connected?Go to step 2.Properly connect the cable.
2Check pin 1 in JFBM1 for voltage. The 
voltage is only present when a flatbed copy 
job is running. The voltage should measure 
+24V AC. Is voltage present?Replace the flatbed unit. 
See 
“Flatbed removal” on 
page 4-24.
Replace the controller 
board. See 
“Controller 
board removal” on 
page 4-13.