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Re: Color LaserJet CM4540 MFP with Error 42.4A.04

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This error is from a firmware problem. To repair go into the preboot menu and do a partial clean of the hard drive.

1. Turn the product on.
2. Press and hold the Stop button when the LED lights are illuminated solid.
3. Use the 3 button and the 9 button to highlight one of the menu items, and then press
the 6 to open the selected item

 

The partial clean is in the Administrator menu.

Then reload the firmware from a thumbdrive.


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