Control panel message Description Recommended action
52.XY ERROR To continue turn off then
on
A temporary printing error has occurred.
■ 52.0 = Scanner error
■ 52.1 = Scanner startup error
■ 52.2 = Scanner rotation error
1 Turn the MFP off, and then turn the
MFP on.
2 Reseat the connectors between the
laser/scanner and dc controller PCA
(J83 and J84).
3 Replace the laser/scanner assembly.
See
Laser/scanner.
4 Replace the dc controller PCA. See
DC
controller.
53.XY.ZZ CHECK RAM DIMM SLOT <X>
To continue touch OK
A problem exists with the MFP memory.
The DIMM that caused the error will not be
used. The following list explains the
meaning of X:
0 = Onboard memory
1 = Slot 1
2 = Slot 2
You might need to reseat or replace the
specified DIMM.
Turn the MFP off, and then replace the
DIMM that caused the error. Make sure that
you are using the correct DIMM for this
MFP. See chapter 8 for a list of supported
DIMMs.
55.XX.YY DC CONTROLLER ERROR To
continue turn off then on
The print engine is not communicating with
the formatter. The problem could be caused
by a timing error or an intermittent
connection.
1 Turn the MFP off, and then turn the
MFP on.
2 Reseat the connectors between the dc
controller PCA and the formatter.
3 If the problem persists, replace the dc
controller PCA. See
DC controller.
4 Replace the formatter. See
Formatter
cover and formatter.
56.X ERROR To continue turn off then on The input device or output device is
unknown.
■ 56.1 = Unknown input device
■ 56.2 = Unknown output device
1 Turn the MFP off, and then turn the
MFP on.
2 For 56.1 errors, reinstall all of the input
devices (optional 500-sheet feeders or
the envelope feeder.) For 56.2 errors,
reinstall the output bin, the stapler/
stacker, or the 3-bin mailbox.
3 Remove all non-HP paper-handling
devices.
57.01 ERROR The dc controller fan (FN104) is not
functioning. See
Figure 7-13 Rear-side fans.
1 Verify that the connector J66 on the dc
controller is firmly seated.
2 Listen for the fan to operate while the
MFP is initializing.
3 If the fan does not operate during the
initialization sequence, replace it. See
DC controller fan (FN104).
Table 7-2 Control-panel messages (continued)
Control-panel messages 327
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