Toshiba e-STUDIO500P manual Chickens for slope Noisy thermistor signal

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

Error	Sub	Display text	Description		Action
code	codes
920	.42	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
		400,000 and 499,999.	• Poor supply line voltage.
			•	Low voltage or incorrect lamp.
			•	Incorrect hot roll.
920	.43	Hot roll too cool while	•	Bad thermistor, circuit, or cabling.	Go to “920.xx—Cold fuser
		chickens for slope	•	Noisy thermistor signal.	service check” on page 2-87.
		change. Fuser page
			•	Fuser not receiving AC power.
		count between 400,000
		and 499,999.	• Poor supply line voltage.
			•	Low voltage or incorrect lamp.
			•	Incorrect hot roll.
920	.44	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 slop
			•	Fuser not receiving AC power.
		change. Fuser page
		count between 400,000	• Poor supply line voltage.
		and 499,999
			•	Low voltage or incorrect lamp.
			•	Incorrect hot roll.
920	.46	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
		between 400,000 and
		499,999.
920	.47	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 400,000	• Poor supply line voltage.
		and 499,999.
			•	Excessive load on the fuser.
			•	Low voltage or incorrect lamp.
			•	Incorrect hot roll.
			•	Abrupt change in temperatures that
				has disrupted control.
920	.51	Hot roll took too long to	•	Bad thermistor, circuit, or cabling.	Go to “920.xx—Cold fuser
		heat up after	•	Fuser not receiving AC power.	service check” on page 2-87.
		transitioning to new
			•	Poor supply line voltage.
		enhanced mode. Fuser
		page count more than	•	Low voltage or incorrect lamp.
		500,000.
			•	Incorrect hot roll.

Diagnostic information 2-13