HP 4 plus C2037A, C2021A, 5n C3952A Printer identified an internal service error. If this error

Table 7-1		Printer Messages (continued)
	Message		Symptoms and Recommendations
64	SERVICE		The printer identified an internal service error. If this error
64	PRINTER ERROR		appears, turn the printer OFF, and then back ON. If the
65	SERVICE		problem persists, replace the Formatter PCA.
67	SERVICE
68	ERROR		The printer detected an error in the nonvolatile memory
68	NVRAM ERROR		(NVRAM). Press [Continue]*, then check your Control Panel
			settings. If the problem persists, replace the Formatter PCA.
68	SERVICE		The printer’s nonvolatile memory is full because new
			feature sets were installed. Power the printer OFF, then
68	NVRAM FULL		back ON. If the problem persists reinitialize the NVRAM by
			pressing the [Item]** key while powering on the printer.
			Reset the page count, cold reset paper size, display
			language, and all other applicable control panel settings.
70	SERVICE		A firmware SIMM problem was identified. Remove or
HP LJ 4+/4M+ Only			replace the firmware SIMM.
71	SERVICE		A firmware SIMM problem was identified. Remove or
HP LJ 4+/4M+ Only			replace the firmware SIMM.
79	SERVICE [xxxx]		An internal controller error has occurred. Power the printer
			OFF, then back ON. If this error persists, replace the
			Formatter PCA. Remove third party memory, if installed.
			May also be caused by driver or application
			incompatibilities, or defective toner cartridge.
80	SERVICE [xxxx]		The formatter PCA has been informed of an irrecoverable
			error by the MIO card. Power cycle the printer. If the error
			persists, replace the MIO card.
81	SERVICE [xxx]		Formatter manufacturing error. Cold Reset the printer. If
			the problem persists, replace the Formatter PCA.
EE LOAD [envelope			The printer received a request for an envelope size that is
size]			not loaded currently in the optional envelope feeder, or the
			feeder is empty. Envelope size may be: COM10, MONARCH,
ENVELOPE FEEDER			or DL, C5, B5, or ENVELOPE. Load the correct envelope
[envelope size]			size into the tray, or press [Continue]* to use the size of
			media installed in the feeder.
FE CARTRIDGE			An accessory cartridge was removed or replaced while the
			printer was on line. (This message appears even if the
			cartridge was not used.) Power cycle the printer to clear
			this message. Ensure that the printer is off line when the
			cartridge is removed or installed. If a font cartridge is not
			recognized, verify that it is installed correctly.
FI INSERT CART			An accessory cartridge was removed while the printer was
			in an error state. To clear this message, insert the cartridge,
			clear any error conditions, then remove the cartridge.
*Press Go on the LJ5.		**Press Job Cancel on the LJ5.

7-8 Troubleshooting