Question about HP LaserJet 2550n Printer
Try the NVRAM reset procedure which resets all the counts in ROM and places the machine back to factory default. This will not work if the drum uses a chip to tell when it is done. The NVRAM reset is done by powering off the machine. Press and hold the Go button. Turn the printer on and continue to hold the Go button. After the Go, Ready, and Attention LED's tuirn on, continue holding for at least 20 seconds. During this process, the Attention, Ready and Go LED's will each turn off. Release the Go button. The device LEDs will begin cycling from front to back. The NVRAM init process runs unitl the printer is in the Ready state,
If this doesn't work it could be a damaged formatter board. Contact Hp tech support: 1800 334 5144.
Posted on Jul 16, 2010
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Posted on Jan 02, 2017
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