- HP All-in-One Printer Manual

Q2431-90912 Chapter 7 Troubleshooting 287
57.X
PRINTER ERROR
To continue turn off then on
or
57.3
EP FAN FAILURE
or
57.4
MAIN FAN FAILURE
A printer fan is not functioning.
X Description
3 EP cartridge fan, right side
(LJ 4300 only)
4 Main cooling fan, left side
Turn the printer off and then on.
57.3 Cartridge fan error (F2)
1. Reconnect the connector
between the fan and the
DC controller PCA
(location J78).
2. Replace the fan. See “Cooling
fan (right side;
HP LaserJet 4300 series
printer only)” on page 170.
3. Replace the
DC controller PCA. See
“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
DUPLEX FAN FAILURE
The cooling fan in the optional
duplexer is not functioning.
1. Turn the printer off and then
on.
2. Replace the duplexer.
Table 42. Numerical printer messages (continued)
Message Description Action