Lexmark X543 Service Manual

Diagnostic information2-57
Lexmark confidential until announce7525xxx
Print quality—residual image
Ser vice tip: Install a new print car tridge, if available, before doing this ser vice check. 
Residual image can be caused by the photoconductor, cleaning blade, and other parts 
inside the print cartridge. 
Step Questions / actions Yes No
1Check the condition of the imaging unit using 
the customer menus (administrative menus):
1. At the Ready prompt, press Menu ().
2. Select Supplies Menu, and press...

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Print quality—solid color page
Service tip: A solid color page is generally caused by a problem in the high-voltage 
controller or an incorrect high voltage in the printing process resulting in toner 
development on the entire photoconductor drum.
Print quality—vertical banding
Replace the developer cartridge. Step Questions / actions Yes No
1Replace the photoconductor unit (part of the 
imaging unit). Remove the imaging unit and 
remove the...

Diagnostic information2-59
Lexmark confidential until announce7525xxx
Printhead service check
This service check includes the following errors:
Error codes Color
106.xx Yellow
107.xx Cyan 
108.xx Magenta
109.xx Black
Step Questions / actions Yes No
1Turn the printer off, and remove the rear shield. 
See “Rear shield removal” on page 4-7. 
Check the cable at JMIRR1 for proper 
connection to the controller board, the 
printhead cable for pinch points, and the cable 
or connector for any other damage.
Is...

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Toner meter cycle (TMC) card
Toner sensors (Y, C, M, K) on TMC card
Step Questions / actions Yes No
1Perform the Base Sensor Test:
1. Enter Diagnostics menu (turn off the 
printer, press and hold   and Select (), 
turn on the printer, and release the buttons 
when the installed memory and processor 
speed displays).
2. Select Base Sensor Test, and press 
Select ().
3. Select the sensor you want to test, open 
the toner door, remove the...

Diagnostic information2-61
Lexmark confidential until announce7525xxx
Transfer roll service check
Step Questions / actions Yes No
1Remove the ITU. See “Image transfer unit 
(ITU)” on page 4-25. Check the contacts 
between the HVPS and the ITU. Clean the 
contacts and recheck.
Does the error reoccur?. Replace the ITU. See 
“Image transfer unit (ITU)” 
on page 4-25.
Go to step 2.Problem resolved.
2Does the new ITU fix the problem Problem resolved. Go to step 3.
3Turn the printer off, and remove the rear...

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Tray 1 sensor service check
Step Questions / actions Yes No
1When the printer is in Ready state, pull the 
standard tray out. The display should indicate 
Tray 1 Missing. Insert the tray.
Does the message remain on the display?Go to step 2. Go to step 4.
2Check the vertical well at the right rear of the 
tray for damage.
Is the tray damaged?Replace the tray. Go to step 3.
3Check for a dislodged sensor. 
Is the sensor dislodged?Replace the tray...

Diagnostic information2-63
Lexmark confidential until announce7525xxx
Scanner / Copy / Fax service checks
840.xx service check
Step Questions / actions Yes No
1 POR the machine into configuration mode. 
Go to the disable scanner menu item. See 
“Disable Scanner” on page 3-36. 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.
2 Re-enter...

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7 Replace the ADF unit. See “Duplex ADF 
removal” on page 4-63or “Simplex ADF 
removal” on page 4-64. POR the machine 
into configuration mode. Go to the disable 
scanner menu item. See “Disable 
Scanner” on page 3-36. Select “Enable 
ADF/FB -Enabled and press   to 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.
8 Inspect JFBM1, JHS1 and JCCD1 on the...

Diagnostic information2-65
Lexmark confidential until announce7525xxx
Black or blank page copy service check
CCD service check
Flatbed motor service check
Step Questions / actions Yes No
1 Print a menu page, or a page from the host. 
Is the page black?See “Print quality—solid 
color page” on page 2-58Go to step 2.
2 Is the copy an ADF scan? Go to step 3. Go to step 4.
3 Run a flat bed copy.
Is it blank or black?Go to step 5 Go to step 4
4 Did the sheet feed into the ADF? Go to step 5.
5 Is the CCD ribbon...

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Flatbed home position service check
Step Questions / actions Yes No
1 POR the MFP. Does the CCD move and 
return to the home position?Problem solved. Go to step 2.
2 Perform the home position sensor test. Go 
to “Scanner Tests” on page 3-25.
Is the sensor working properly?Go to step 3. Go to step 5.
3 Check JFBM1 on the controller for proper 
connection.
Is it connected properly?Go to step 4. Properly connect the cable.
4 Check pin 1 in JFBM1...