HP CP4525DN Laser CC494A#ABA manual See Fuser on

Table 3-14Control-panel messages (continued)

Description	Recommended action
50.3 FUSER ERROR	High fuser temperature	Reinstall the fuser. Check connector J50
		between the fuser and the product. If either is
		damaged, replace the connector or fuser.
		See Fuser on page 85.
		If the error persists, replace the low-voltage
		power supply. See Low-voltage power supply
		(LVPS) on page 157.
50.4 FUSER ERROR	Drive circuit fault	1.	Check the power source. Make sure the
			power source meets product
			requirements.
		2.	Reconnect the connector J150 on the
			DC controller PCA.
		3.	If the message persists, replace the low-
			voltage power supply. See Low-voltage
			power supply (LVPS) on page 157.
50.5 FUSER ERROR	The incorrect fuser was installed.	CAUTION: The fuser can be hot while the
		product is in use. Wait for the fuser to cool
		before handling it.
		1.	Open the right door.
		2.	Remove the incompatible fuser.
		3.	Install the correct fuser.
		4.	Close the right door.
50.7 FUSER ERROR	Fuser pressure-release mechanism failure	1.	Reconnect the fuser-pressure release
			sensor intermediate connector J60, and
			connector J128 on the DC controller
			PCA.
		2.	Run the sensor test in the sensor
			monitor mode to verify that the fuser
			pressure-release sensor is functioning
			properly. If it is not, replace the fuser
			pressure-release sensor.
		3.	Check the fuser pressure-release
			sensor flag. If it is damaged, replace the
			fuser.
		4.	Run the fuser pressure-release drive
			test in actuator drive mode to verify that
			the fuser motor is functioning properly.
			If it is not, replace the fuser motor. See
			Fuser motor on page 200.
		5.	If the message persists, replace the
			fuser. See Fuser on page 85.
50.8 FUSER ERROR	Low fuser temperature.	Remove the fuser and any residual paper.
		Check connector J50 between the fuser and
		the product. If either is damaged, replace the
		connector or fuser. See Fuser on page 85.

ENWW Tools for troubleshooting 349