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Critical error messages
Critical error messages can indicate some kind of failure. Turning off and then turning on the power
might fix the problem. If a critical error persists, the product might require service.
Critical error message-tables
Table 12-2 Critical error messages
Control panel message Description Recommended action
49 Error, Turn off then on The product has experienced an internal
embedded software error.
Turn off the power by using the power switch,
wait at least 30 seconds, and then turn on the
power and wait for the product to initialize.
If the error persists, contact HP. See
www.hp.com/support/LJM2727 or the
support flyer that came in the product box.
50.x Fuser Error The product has experienced an internal
hardware error.
1. Turn off the power by using the power
switch, and then wait at least 30
seconds.
2. If a surge protector is being used,
remove it. Plug the product directly into
the wall socket.
3. Turn on the power and wait for the
product to initialize.
If the error persists, contact HP. See
www.hp.com/support/LJM2727 or the
support flyer that came in the product box.
52 Scanner Error The product has experienced an internal
hardware error.
Turn off the power by using the power switch,
wait at least 30 seconds, and then turn on the
power and wait for the product to initialize.
If a surge protector is being used, remove it.
Plug the product directly into the wall socket.
Use the power switch to turn the product on.
If the error persists, contact HP. See
www.hp.com/support/LJM2727 or the
support flyer that came in the product box.
55.4 Error, Turn off then on The product has experienced an engine
communication timeout error.
Turn off the power by using the power switch,
wait at least 30 seconds, and then turn on the
power and wait for the product to initialize.
If a surge protector is being used, remove it.
Plug the product directly into the wall socket.
Use the power switch to turn the product on.
If the error persists, contact HP. See
www.hp.com/support/LJM2727 or the
support flyer that came in the product box.
57 Fan Error, Turn off then on The product has experienced a problem with
its internal fan.
Turn off the power by using the power switch,
wait at least 30 seconds, and then turn on the
power and wait for the product to initialize.
If the error persists, contact HP. See
www.hp.com/support/LJM2727 or the
support flyer that came in the product box.
172 Chapter 12 Problem solve ENWW