HP 2420dn HP LaserJet 2400 Series - User Guide - Page 139

Control panel message, Description, Recommended action, XXXX ERROR, To continue, turn off then

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Interpreting control-panel messages (continued) Control panel message Description Recommended action 79.XXXX ERROR alternates with To continue turn off then on The printer detected a critical hardware error. 1. Press STOP to clear the print job from the printer memory. Turn the printer power off and then on. 2. Try printing a job from a different program. If the job prints, go back to the first program and try printing a different file. If the message appears only with a certain program or print job, contact the software vendor for assistance. If the message persists with different programs and print jobs, try these steps. 1. Turn the printer power off. 2. Disconnect all cables to the printer that connect it to the network or computer. 3. Remove all the memory DIMMs or third-party DIMMs from the printer. Then reinstall at least one memory DIMM . (See Printer memory.) 4. Remove all EIO devices and CompactFlash cards from the printer. 5. Turn the printer power on. If the error no longer exists, follow these steps. 1. Install each DIMM and EIO device one at a time, making sure to turn the printer power off and back on as you install each device. 2. Replace a DIMM or EIO device if you determine that it causes the error. 3. Reconnect all cables that connect the printer to the network or computer. 8X.YYYY EIO ERROR The EIO accessory card has encountered a critical error. 1. Turn the printer power off and then on. 2. Turn the printer power off, reseat the EIO accessory, and then turn the printer power on. 3. Replace the EIO accessory. 8X.YYYY EMBEDDED JETDIRECT ERROR The embedded HP Jetdirect print server has encountered a critical error. 1. Turn the printer power off and then on. 2. If the message persists, contact an HP-authorized service or support provider (see HP customer care). ENWW Understanding printer messages 127

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Control panel message
Description
Recommended action
79.XXXX ERROR
alternates with
To continue
turn off then on
The printer detected a critical hardware
error.
1.
Press
S
TOP
to clear the print job
from the printer memory. Turn the
printer power off and then on.
2.
Try printing a job from a different
program. If the job prints, go back to
the first program and try printing a
different file. If the message
appears only with a certain program
or print job, contact the software
vendor for assistance.
If the message persists with different
programs and print jobs, try these steps.
1.
Turn the printer power off.
2.
Disconnect all cables to the printer
that connect it to the network or
computer.
3.
Remove all the memory DIMMs or
third-party DIMMs from the printer.
Then reinstall at least one memory
DIMM . (See
Printer
memory
.)
4.
Remove all EIO devices and
CompactFlash cards from the printer.
5.
Turn the printer power on.
If the error no longer exists, follow these
steps.
1.
Install each DIMM and EIO device
one at a time, making sure to turn
the printer power off and back on as
you install each device.
2.
Replace a DIMM or EIO device if
you determine that it causes the
error.
3.
Reconnect all cables that connect
the printer to the network or
computer.
8X.YYYY
EIO ERROR
The EIO accessory card has
encountered a critical error.
1.
Turn the printer power off and then
on.
2.
Turn the printer power off, reseat
the EIO accessory, and then turn
the printer power on.
3.
Replace the EIO accessory.
8X.YYYY EMBEDDED
JETDIRECT ERROR
The embedded HP Jetdirect print server
has encountered a critical error.
1.
Turn the printer power off and then
on.
2.
If the message persists, contact an
HP-authorized service or support
provider (see
HP
customer
care
).
Interpreting control-panel messages (continued)
ENWW
Understanding printer messages
127