Error 10.50 HP LaserJet M4345 MultiFunction Printer has error 10.50.09 in the event log

SOURCE: HP Color LaserJet 4500 Printer

Here is your problem. Hope that this helps you.

54.1 PRINTER ERROR
Description:
Indicates that an internal power failure has
occurred.
Action:
1. Turn the printer off, and then turn the printer
back on.
2. Replace the high-voltage power supply.
3. Check the fuser to ensure jams have not
occurred.
Caution When clearing jams, the
thermistor can be damaged
causing this error.
4. Make sure there is not a fluctuation in the
power supply to the printer. Check that the
electrical specifications (see Chapter 1) are
met.
5. Replace the low-voltage power supply.

SOURCE: Incorrect Pin Error message coming

The pin for this specific machine should be 11434506.
If that doesn't work you must cold reset the machine.

Turn it off the machine.
Turn machine on hold 6 down until the memory count is done and all 3 lights are on release 6 and use 3 to arrow up to cold reset and press 6 "acts as the enter button"

FYI
3 works as arrow up
9 works as arrow down
6 works as the Enter button

Seeker5211

• 1089 Answers
• Posted on Jan 12, 2011

SOURCE: Model HP LaserJet M4345 MFP The printer displays

You've done everything but replace the formatter.
Can you look at the Event Log? Look for a 79.xxxx error. That is definately a formatter.
Is this a solid error, meaning does it appear when printer inits?
Remove the DIMMs and flash memory and network cable. And reinstall one by one until error reappears.
Do you have another 4345 that you can "borrow" a formatter from?

Seeker5211

• 1089 Answers
• Posted on Apr 30, 2012

SOURCE: HP Laserjet M4345 MFP is

Upgrade the firmware.Go to http://www8.hp.com/us/en/support-drivers.htmlEnter your printer.Select your operating systemSelect the firmware and download it. Follow the instructions to the letter