Toshiba e-STUDIO500P manual Printhead service check, Signature button assembly service check

Printhead service check

CAUTION: The printhead is not a serviceable FRU. Do not disassemble the printhead.

The printhead assembly does not contain any service replaceable parts or components. If service error code 930.xx displays, the wrong printhead is installed in the printer. See “Printhead” on page 7-10.

Note: A 201.xx paper jam may also indicate a failing printhead. The paper may have jammed prior to or at the input sensor. Print the event log and see if 201 or 931 errors are logged.

	Service error code	Explanation
1	Error code 931.xx	These errors usually indicate a failure in the HYSNC signal to the
	No first HYSNC Signal	printhead. Check the continuity of the cables connected to J2 and J4
	Error Code 932	on the system board. If incorrect, replace the defective cable. The
	Lost HYSNC	voltage at J4-1 measures approximately +5 V dc. If incorrect, replace
		the system board. The voltage at J2-7 measures approximately
		+24 V dc. If incorrect, replace the system board. If correct, replace
		the printhead assembly.
2	Error Code 934.xx	These error codes indicate a problem with the mirror motor circuit in
	Mirror motor lost lock Error	the printhead assembly or the mirror motor cable to the system board
	Code 935	cable or system board assembly. The voltage at J5-2 measures
	Mirror motor unable to	approximately +24 V dc. If incorrect, replace the system board. If
	reach operating speed	correct, replace the FRUs in the following order:
		•	System board
		•	Printhead assembly

Signature button assembly service check

Note: If you are unable to clear a 32.xx-Unsupported Cartridge User Error message, be sure a Lexmark T64x print cartridge is correctly installed in the printer. The cartridge is easily identified by the contact board on the right side rear of the cartridge. Install another print cartridge before attempting to troubleshoot the printer. Make sure the signature button cable is properly connected to J14 on the system board. Check the print cartridge for damage or improper installation of the chip. Also, be sure there is proper contact between the chip on the cartridge and the signature button contact assembly.

Service tip: An intermittent 32.xx-Unsupported Cartridge User Error message can be caused by poor contact between the signature button cartridge contacts in the upper front cover and the chip. Also check for proper seating of the signature button cartridge cable to the system board.

	FRU	Action
1	Signature button contact	Check the voltage on the signature button cartridge contact. The
	assembly	voltage measures approximately +3.8 V dc when not writing data to
	System board	the system board. If data is being written, the voltage measures
		approximately 0 V dc. If incorrect, disconnect the cable from J19 on
		the system board, and check the voltage on J19-1. The voltage
		measures approximately +5 V dc.
		• If incorrect, replace the system board.
		• If correct, replace the signature button cartridge contact
		assembly.

2-122Service Manual