HP LaserJet Pro MFP M28-M31 - User Guide

Table 8-2 Control-panel light patterns (continued)
Light status Error code State of the printer Action
Attention and Ready
lights are on.
NOTE: The Supplies
LED might or might
not be on in this state
depending on the
supply status.
Er/30 There is an issue with the atbed
scanner.
Turn o the device and then turn it on. If the problem
persists, contact HP support.
Er/50
Er/51
Er/52
Er/54
Er/55
Er/58
Er/59
There is an issue with the print
engine.
Turn o the device and then turn it on. If the problem
persists, contact HP support.
Er/66 There is a problem with the wireless
hardware.
Turn o the device and then turn it on. If the problem
persists, contact HP support.
Attention light is o
and Ready light is on.
NOTE: The Supplies
LED might or might
not be on in this state
depending on the
supply status.
The printer is in Ready mode. The
LCD display will show the current
value for the number of copies.
Attention light is o
and Ready light is on
but dim.
NOTE: The Supplies
LED might or might
not be on in this state
depending on the
supply status.
The printer is in Sleep mode.
58 Chapter 8 Solve problems ENWW