Control-panel display problems
CAUTION: Static electricity can cause unexpected black lines or dots to appear on the product control-
panel display. Do not touch the product control-panel display if there is a chance that you have collected
a static electric charge (for example, by walking on carpet in a low-humidity environment).
Unexpected lines or dots might appear on the product control-panel display, or the display might become
blank if the product is exposed to an electric or magnetic field. To resolve this problem, perform the
following procedure:
1. Turn the product off.
2. Remove the product from the electric or magnetic field.
3. Turn the product on again.
NOTE: If the product uses the Asian character display PCA and the formatter was recently
replaced, make sure that the PCA is installed correctly and fully seated in the formatter
connector (H3).
Convenience-stapler problems (HP LaserJet M2727nfs
only)
The convenience stapler is designed to be free of staple jams. To reduce the risk of staple jams, make
sure that you staple 20 or fewer pages of media (80 g/m
2
or 20 lb) at a time.
The convenience stapler does not staple pages.
Cause
Solution
The convenience-stapler door is not completely closed. Make sure that the convenience-stapler door is completely
closed.
The convenience stapler has a staple jam. Clear the staple jam. See Clear jams from the convenience
stapler (HP LaserJet M2727nfs MFP only) on page 189.
ENWW Control-panel display problems 227
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