HP CM1015 HP Color LaserJet CM1015/CM1017 MFP Series - User Guide - Page 208
The device control panel display has black lines or dots, or becomes blank
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The device control panel display has black lines or dots, or becomes blank CAUTION Static electricity can cause unexpected black lines or dots to appear on the device control panel display. Do not touch the device 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). Was the device exposed to an electric or magnetic field? Unexpected lines or dots might appear on the device control panel display, or the display might become blank if the device is exposed to an electric or magnetic field. To resolve this problem, perform the following procedure: 1. Turn the device off. 2. Remove the device from the electric or magnetic field. 3. Turn the device on again. 194 Chapter 14 Problem solving ENWW
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