Control-panel display problems
| CAUTION:
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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).
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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.
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| 2.
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| Remove the product from the electric or magnetic field.
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| 3.
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| Turn the product on again.
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HP Laserjet M2727 Control-panel display problems