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HP LaserJet Pro and HP Color LaserJet Pro Printers - Printer does not wake after entering Sleep / Auto Off mode

Issue:

The printer may not awake from Sleep/Auto Off mode, even when all wake events are performed. This includes:
  • Sending a print job
  • Touching the control panel
  • Receiving a fax
  • Opening a door
Additional symptoms might include:
  • Unable to access the the HP Embedded Web Server (EWS)
  • Unable to ping the device over the network
  • The printer drops off the network
  • When waking from sleep, the printer hangs on the Initializing... screen
These issues are typically associated to network connected printers.
The printer’s power light may be blinking, but in order to wake up the printer it must be turned off and then on again.
This document applies to the following products only:
  • HP Color LaserJet Pro MFP M476
  • HP LaserJet Pro 200 color Printer M251
  • HP LaserJet Pro 200 color MFP M276
  • HP LaserJet Pro 300 color Printer M351
  • HP LaserJet Pro 300 color MFP M375
  • HP LaserJet Pro 400 Printer M401
  • HP LaserJet Pro 400 MFP M425
  • HP LaserJet Pro 400 color Printer M451
  • HP LaserJet Pro 400 color MFP M475
  • HP LaserJet Pro 500 color MFP M570
  • HP LaserJet Pro M201
  • HP LaserJet Pro M202
  • HP LaserJet Pro M435 Multifunction
  • HP LaserJet Pro M701
  • HP LaserJet Pro M706
  • HP LaserJet Pro MFP M225
  • HP LaserJet Pro MFP M226
  • HP LaserJet Pro MFP M521
  • HP TopShot LaserJet Pro M275 MFP

Solution:

Download and install the latest firmware available from HP.com: HP Drivers & Downloads .
The printer must have the firmware datecode or later, as listed below:
  • Datecode 20150112
    • HP Color LaserJet Pro MFP M476
    • HP LaserJet Pro M521 Multifunction Printer
    • HP LaserJet Pro 500 color MFP M570
  • Datecode 20150126
    • HP TopShot LaserJet Pro M275 MFP
    • HP LaserJet Pro 300 color Printer M351
    • HP LaserJet Pro 300 color MFP M375
    • HP LaserJet Pro 400 color Printer M451
    • HP LaserJet Pro 400 color MFP M475
  • Datecode 20150129
    • HP LaserJet Pro M201
    • HP LaserJet Pro M202
    • HP LaserJet Pro MFP M225
    • HP LaserJet Pro MFP M226
  • Datecode 20150212
    • HP LaserJet Pro 200 color Printer M251
    • HP LaserJet Pro 200 color MFP M276
    • HP LaserJet Pro 400 Printer M401
    • HP LaserJet Pro 400 MFP M425
  • Datecode 20150316
    • HP LaserJet Pro M435 Multifunction
    • HP LaserJet Pro M701
    • HP LaserJet Pro M706
To determine the printer's firmware datecode, print a Configuration Report from the printer's control panel, and look for the Firmware Datecode under the Product Information heading.



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