Toshiba e-STUDIO500P manual Go to 922.xx-Cold fuser, Check on

Service error codes (9xx.xx) (continued)

Error	Sub	Display text	Description		Action
code	codes
920	.92	Hot roll fell too far below	•	Bad thermistor, circuit, or cabling.	Go to “920.xx—Cold fuser
		desired temperature	•	Noisy thermistor signal.	service check” on page 2-87.
		while printing. Fuser
			•	Fuser not receiving AC power.
		page count not
		available.	• Poor supply line voltage.
			•	Excessive load on the fuser.
			•	Low voltage or incorrect lamp.
			•	Incorrect hot roll.
920	.93	Hot roll too cool while	•	Bad thermistor, circuit, or cabling.	Go to “920.xx—Cold fuser
		checking for slope	•	Noisy thermistor signal.	service check” on page 2-87.
		change. Fuser page
			•	Fuser not receiving AC power.
		count not available.
			• Poor supply line voltage.
			•	Excessive load on the fuser.
			•	Low voltage or incorrect lamp.
			•	Incorrect hot roll.
920	.94	Hot roll too cool when	•	Bad thermistor, circuit, or cabling.	Go to “920.xx—Cold fuser
		heating to desired	•	Noisy thermistor signal.	service check” on page 2-87.
		temperature after slope
			•	Fuser not receiving AC power.
		change. Fuser page
		count not available.	• Poor supply line voltage.
			•	Excessive load on the fuser.
			•	Low voltage or incorrect lamp.
			•	Incorrect hot roll.
920	.96	Fuser is not increasing	•	Fuser is not receiving AC power.	Go to “920.xx—Cold fuser
		in temperature even	• Poor supply line voltage.		service check” on page 2-87.
		though the lamp has
		been on for an extended
		time. Fuser page count
		not available.
920	.97	Fuser has been below	•	Bad thermistor, circuit, or cabling.	Go to “920.xx—Cold fuser
		the desired temperature	•	Very noisy thermistor signal.	service check” on page 2-87.
		for too long while media
			•	Fuser not receiving AC power.
		is in the nip. Fuser page
		count not available.	• Poor supply line voltage.
			•	Excessive load on the fuser.
			•	Low voltage or incorrect lamp.
			•	Abrupt change in temperatures that
				has disrupted control.
922	.02	Hot roll took too long to	•	Low wattage or incorrect lamp.	Go to “922.xx—Cold fuser
		reach the beginning	• Bad thermistor, circuit, or cabling.		check” on page 2-89.
		lamp detection
			•	Fuser not receiving sufficient AC
		temperature. Fuser
		page count between 0		power.
		and 99,999.	• Poor supply line voltage.

Diagnostic information 2-15