HP CP4525DN Laser CC494A#ABA 59.A0 Error, BO Cleaning Motor Error, Replace Toner Collection Unit

Table 3-14Control-panel messages (continued)

Description	Recommended action
59.63 ERROR	Yellow image drum motor rotation error	Perform the drum-motors component test in
		the DIAGNOSTICS menu. If the message
		persists, replace the yellow drum motor. See
		Yellow, magenta, cyan, and black drum
		motors on page 199.
59.90 ERROR	ITB motor startup error	Reconnect the connector J14 of the ITB
		motor and the connector J140 on the DC
		controller PCA. Perform the ITB motor drive
		component test to verify that the ITB motor is
		functioning properly. If the message persists,
		replace the ITB motor. See ITB motor
		on page 202.
59.A0 ERROR	ITB motor rotation error.	Use the component test to activate the ITB
		motor. If the motor does not function, replace
		the motor. See ITB motor on page 202.
59.BO CLEANING MOTOR ERROR	The residual-toner feed motor has failed.	1.	Check the toner collection unit. If the unit
REPLACE TONER COLLECTION UNIT			is full, replace it.
			NOTE: Toner can clog the feed motor
			if the toner collection unit is full.
		2.	Reconnect the residual-toner feed
			motor connector J63 and connector
			J155 on the DC controller PCA.
		3.	Replace the residual-toner feed motor.
			See Residual-toner-feed motor
			on page 133.
59.C0 ERROR	Developer alienation motor rotation error	1.	Reconnect intermediate connector J87
			of the developing disengagement
			sensor, connector J112 on the DC
			controller PCA, connector J38 of the
			developing disengagement motor, and
			the connector J261 on the high-voltage
			power supply D PCA.
		2.	Run the sensor test in the sensor
			monitor mode to verify that the
			developing disengagement sensor is
			functioning properly. If it is not, replace
			the main-drive assembly. See Main-
			drive assembly on page 203.
		3.	Run the developing unit disengagement
			drive test to verify that the
			disengagement mechanism is
			functioning properly. If it is not, replace

the developing disengagement motor. See Developing-disengagement motor on page 168.

ENWW Tools for troubleshooting 353