Toshiba e-STUDIO500P manual During steady state Fuser not receiving AC power

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

Error	Sub	Display text	Description		Action
code	codes
920	.22	Hot roll fell too far below	•	Bad thermistor, circuit, or cabling.	Go to “920.xx—Cold fuser
		the desired temperature	•	Noisy thermistor signal.	service check” on page 2-87.
		while printing. Fuser
			•	Fuser not receiving AC power.
		page count between
		200,000 and 299,999.	• Poor supply line voltage.
			•	Low voltage or incorrect lamp.
			•	Incorrect hot roll.
920	.23	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 between 200,000
		and 299,999.	• Poor supply line voltage.
			•	Low voltage or incorrect lamp.
			•	Incorrect hot roll.
920	.24	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 between 200,000	• Poor supply line voltage.
		and 299,999.
			•	Low voltage or incorrect lamp.
			•	Incorrect hot roll.
920	.26	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
		tim. Fuser page count
		between 200,000 and
		299,999.
920	.27	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 between 200,000	• Poor supply line voltage.
		and 299,999.
			•	Excessive load on the fuser.
			•	Low voltage or incorrect lamp.
			•	Incorrect hot roll.
			•	Abrupt change in temperature that
				has disrupted control.
920	.31	Under temperature	•	Bad thermistor, circuit, or cabling.	Go to “920.xx—Cold fuser
		during steady state	•	Fuser not receiving AC power.	service check” on page 2-87.
		control. Fuser page
			•	Poor supply line voltage.
		count between 300,000
		and 399,999.	•	Low voltage or incorrect lamp.
			•	Incorrect hot roll.

Diagnostic information 2-11