HP Color LaserJet 2820/2830/2840 All-In-One - User Guide
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...message Description 52 Scanner Error The device has experienced an internal hardware error. 54.2, 55.1, 59.16, 59.192, 59.4, 59.99 Errors The device has experienced an internal hardware error. 57 Fan Error Turn off then on The device has experienced a problem with its internal fan. 79 Error Turn off the ... protector is seated properly, and then turn on the power and wait for the device to turn off then on . If the error persists, contact HP Customer Care. If you have recently installed a memory DIMM in the device box. See Service and support or the support flyer that...
...message Description 52 Scanner Error The device has experienced an internal hardware error. 54.2, 55.1, 59.16, 59.192, 59.4, 59.99 Errors The device has experienced an internal hardware error. 57 Fan Error Turn off then on The device has experienced a problem with its internal fan. 79 Error Turn off the ... protector is seated properly, and then turn on the power and wait for the device to turn off then on . If the error persists, contact HP Customer Care. If you have recently installed a memory DIMM in the device box. See Service and support or the support flyer that...