HP Pro 4300 C9H70UT C9H70UT#ABA manual Cartridge fan error F2, Main fan error F1

Table 42. Numerical printer messages (continued)

Message	Description		Action
57.X	A printer fan is not functioning.		Turn the printer off and then on.
PRINTER ERROR			57.3 Cartridge fan error (F2)
To continue turn off then on	X	Description	1.	Reconnect the connector
	3	EP cartridge fan, right side		between the fan and the
or	(LJ 4300 only)			DC controller PCA
	4	Main cooling fan, left side		(location J78).
57.3			2. Replace the fan. See “Cooling
EP FAN FAILURE				fan (right side;
or				HP LaserJet 4300 series
				printer only)” on page 170.
			3.	Replace the
57.4				DC controller PCA. See
MAIN FAN FAILURE				“DC controller PCA” on
				page 181.
			57.4 Main fan error (F1)
			1.	Reconnect the connector
				between the fan and the
				power supply.
			2. Verify that the ribbon cables
				are fully seated in the
				connectors on the
				DC controller PCA.
			3. Replace the fan. See “Main
				cooling fan (left side)” on
				page 168.
			4. Replace the power supply.
				See “Power supply” on
				page 188.
			5.	Replace the
				DC controller PCA. See
				“DC controller PCA” on
				page 181.
57.7	The cooling fan in the optional		1.	Turn the printer off and then
DUPLEX FAN FAILURE	duplexer is not functioning.			on.
			2.	Replace the duplexer.

Q2431-90912 Chapter 7 Troubleshooting 287