HP Pro 4300 C9H70UT C9H70UT#ABA manual Air temperature sensor, DC controller, Power supply

Table 42. Numerical printer messages (continued)

Message	Description		Action
58.X	A memory error has been		1.	Turn the printer off and then
PRINTER ERROR	detected.			on.
For help press			58.2 Air temperature sensor
	X	Description	1.	Turn the printer off and then
alternates with	2	air-temperature sensor		on.
	3	DC controller	2.	Reconnect the connector
58.X	4	power supply		between the air temperature
PRINTER ERROR				sensor (the bar mounted
To continue turn off then on				across the main cooling fan
				on the left side of the printer)
				and the power supply
				(location J63).
			3.	Replace the air-temperature
				sensor. See “Main cooling
				fan (left side)” on page 168.
			4.	Replace the power supply.
				See “Power supply” on
				page 188.
			58.3 DC controller
			1.	Replace the
				DC controller PCA. See
				“DC controller PCA” on
				page 181.
			58.4 Power supply
			1.	Replace the power supply.
				See“Power supply” on
				page 188.

288 Troubleshooting Q2431-90912