Control panel message Description Recommended action
49.XXXXX ERROR To continue turn off
then on
A critical firmware error has occurred. Turn the device off, and then turn the device
on.
If this message persists, contact an HP-
authorized service or support provider. (See
the HP support flyer, or go to
www.hp.com/
support/LJM3027mfp or www.hp.com/
support/LJM3035mfp.)
50.X FUSER ERROR To continue turn off
then on
A fuser error has occurred. Turn the device off, and then turn the device
on.
If this message persists, contact an HP-
authorized service or support provider. (See
the HP support flyer, or go to
www.hp.com/
support/LJM3027mfp or www.hp.com/
support/LJM3035mfp.)
51.XY ERROR To continue turn off then on A temporary printing error has occurred. Turn the device off, and then turn the device
on.
If this message persists, contact an HP-
authorized service or support provider. (See
the HP support flyer, or go to
www.hp.com/
support/LJM3027mfp or www.hp.com/
support/LJM3035mfp.)
52.XY ERROR To continue turn off then on A temporary printing error has occurred. Turn the device off, and then turn the device
on.
If this message persists, contact an HP-
authorized service or support provider. (See
the HP support flyer, or go to
www.hp.com/
support/LJM3027mfp or www.hp.com/
support/LJM3035mfp.)
53.XY.ZZ CHECK RAM DIMM SLOT <X> To
continue turn off then on
A problem exists with the device memory.
The DIMM that caused the error will not be
used. The following are the values of X:
X = Device location
0 = Onboard memory
1 = Slot 1
You might need to reinstall or replace the
specified DIMM.
Turn the device off, and then replace the
DIMM that caused the error. See
Install
memory.
If this message persists, contact an HP-
authorized service or support provider. (See
the HP support flyer, or go to
www.hp.com/
support/LJM3027mfp or www.hp.com/
support/LJM3035mfp.)
54.XX ERROR To continue turn off then on A temporary printing error has occurred. Turn the device off, and then turn the device
on.
If this message persists, contact an HP-
authorized service or support provider. (See
the HP support flyer, or go to www.hp.com/
support/LJM3027mfp or www.hp.com/
support/LJM3035mfp.)
55.XX.YY DC CONTROLLER ERROR To
continue turn off then on
The print engine is not communicating with
the formatter.
Turn the device off, and then turn the device
on.
If this message persists, contact an HP-
authorized service or support provider. (See
the HP support flyer, or go to
www.hp.com/
Table 11-1 Control-panel messages (continued)
156 Chapter 11 Problem solving ENWW
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