HP 3390 Service Manual - Page 256
Control-panel display problems, Convenience-stapler problems (HP LaserJet 3392 only
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Control-panel display problems CAUTION Static electricity can cause unexpected black lines or dots to appear on the all-inone control-panel display. Do not touch the all-in-one control-panel display if there is a chance that you have collected a static electric charge (for example, by walking on carpet in a lowhumidity environment). Unexpected lines or dots might appear on the all-in-one control-panel display, or the display might become blank if the all-in-one is exposed to an electric or magnetic field. To resolve this problem, perform the following procedure: 1. Turn the all-in-one off. 2. Remove the all-in-one from the electric or magnetic field. 3. Turn the all-in-one on again. Convenience-stapler problems (HP LaserJet 3392 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/m2 or 20 lb) at a time. The convenience stapler does not staple pages. Cause The convenience-stapler door is not completely closed. The convenience stapler has a staple jam. Solution Make sure that the convenience-stapler door is completely closed. Clear the staple jam. See Jams in the convenience stapler (HP LaserJet 3392 only) on page 200. 234 Chapter 6 Troubleshooting ENWW