Lexmark T63 Series, Service Manual

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Service Manual
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Printhead service check
The printhead assembly does not contain any service replaceable parts or components. If service
error code 930 displays, the wrong printhead is installed in the printer. See
“Printhead 1 (000/010)”
on page 7-10 , “Printhead 2 (200/210)” on page 7-11 , or “Printhead 3 (400/410)” on page 7-12 .
Note: A 201 paper jam may also indicate a failing printhead. The paper may have jammed prior to or
at the input sensor. Print the error log and see if 201 or 931 errors are logged.
Print quality service check
Service tip: Before troubleshooting any print quality problems do the following:
•
Install another print cartridge if available before proceeding with the service checks.
•
Use Tray 1 to test for print quality of the base printer.
•
Replace the charge roll if it is damaged or contaminated.
•
Replace the transfer roll if it is damaged or contaminated.
•
Make sure the fuser assembly is installed correctly.
•
Verify proper paper type, texture, and weight settings for the media being used.
•
Test the printer using plain paper (20 lb).
Select the following menu settings as indicated. Be sure and note the original settings so you can
return the printer to the original customer printer setup.
•
Print Resolution: Set to 300 dpi (print quality problems should be checked at different resolution
settings).
•
Print Darkness: Set to NORMAL.
•
Toner Saver: Set to OFF.
•
PQET: Set to OFF.
•
Fuser Temperature: Set to NORMAL.
•
Test the printer using plain paper (20 lb).
An incorrect printer driver for the installed software can cause problems. Incorrect characters could
print and the copy may not fit the page correctly.
Service Error Code Explanation
1 Error code 931
No first HYSNC Signal
Error Code 932
Lost HYSNC These errors usually indicate a failure in the HYSNC signal to the
printhead. Check the continuity of the cables connected to J5 and J4
on the system board. If incorrect, replace the defective cable. The
voltage at J4-1 measures approxi5 V dc. If incorrect, replace
the system board. The voltage at J5-7 measures approximately
+24 V dc. If incorrect, replace the system board. If correct, replace
the printhead assembly.
2 Error Code 934
Mirror motor lost lock Error
Code 935
Mirror motor unable to
reach operating speed These error codes indicate a problem with the mirror motor circuit in
the printhead assembly or the mirror motor cable to the system board
cable or system board assembly. Check the continuity of the mirror
motor cable connected to J5 on the system board. If incorrect,
replace the cable. The voltage at J5-7 measures approximately
+24 V dc. If incorrect, replace the system board. If correct, replace
the FRUs in the following order:
• System board
• Printhead assembly