Control panel message Event
log error
message
Description Recommended action
49.XXXX
64 PRINTER ERROR
To continue
turn off then on
None A critical firmware error has
occurred that caused the
processor on the formatter to
abort operation. This type of error
can be caused by invalid print
commands, corrupt data, or invalid
operations. In some cases,
electrical noise in the cable can
corrupt data during transmission
to the printer. Other causes
include poor quality parallel
cables, poor connections, or home-
grown applications. On rare
occasions, the formatter is at fault,
which is usually indicated by a
79 Service Error.
1. Press C
ANCEL
J
OB
to clear the
print job from the printer
memory.
2. Turn the printer off and then
back on.
3. Try printing a job from a
different software application.
If the job prints, go back to
the first application and try
printing a different file. If the
message appears only with a
certain software application or
print job, contact the software
vendor for assistance.
4. If the message persists with
different software applications
and print jobs, disconnect all
cables to the printer that
connect it to the network or
PC.
5. Turn the printer off.
6. Remove all memory DIMMs
or third-party DIMMs from the
printer. (Do not remove the
firmware DIMM in slot J1.)
7. Remove all EIO devices from
the printer.
8. Turn the printer on.
9. If the error no longer exists,
install each DIMM and EIO
device one at a time, making
sure to turn the printer off and
back on as you install each
device.
10. Replace a DIMM or EIO
device if you determine that it
causes the error.
11. Remember to reconnect all
cables that connect the
printer to the network or
computer.
12. If the error persists, replace
the firmware DIMM.
13. Replace the formatter and
calibrate the printer. See
Calibrate now.
Table 7-5. Numerical printer messages (HP Color LaserJet 5550 models) (continued)
320 Chapter 7 Troubleshooting ENWW
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