HP 3390 HP LaserJet 3050/3052/3055/3390/3392 All-in-One User Guide - Page 349
Table 13-2, 1 Error, Fan Error, Error Turn off then - laserjet error 79
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Table 13-2 Critical error messages (continued) Control panel message Description 55.1 Error The all-in-one has experienced an internal hardware error. 57 Fan Error The all-in-one has experienced a problem with its internal fan. 79 Error Turn off then on The all-in-one has experienced an internal firmware error. Recommended action Turn off the power by using the power switch, wait at least 30 seconds, and then turn on the power and wait for the all-in-one to initialize. If a surge protector is being used, remove it. Plug the all-in-one directly into the wall socket. Use the power switch to turn the allin-one on. If the error persists, contact HP Customer Care. See HP Customer Care or the support flyer that came in the all-in-one box. Turn off the power by using the power switch, wait at least 30 seconds, and then turn on the power and wait for the all-in-one to initialize. If the error persists, contact HP Customer Care. See HP Customer Care or the support flyer that came in the all-in-one box. Turn off the power by using the power switch, wait at least 30 seconds, and then turn on the power and wait for the all-in-one to initialize. If you have recently installed a memory DIMM in the HP LaserJet 3390/3392 all-inone, turn off the all-in-one, remove the memory DIMM, reinstall the DIMM to verify that it is seated properly, and then turn on the all-in-one. If a surge protector is being used, remove it. Plug the all-in-one directly into the wall socket. Use the power switch to turn the allin-one on. If the error persists, contact HP Customer Care. See HP Customer Care or the support flyer that came in the all-in-one box. ENWW Control-panel messages 331
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