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ERROR MESSAGE 40 MIO - HP LaserJet 4 plus Printer

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Seems like you need an Error Code Chart.
So here's a complete chart of all error codes.
Hope it helps.

Posted on Nov 15, 2009


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Computer and printer may be set to different baud rates.

2. Computer is powered off.

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HP's support document on error 13 paper jam:

According to my "HP LaserJet Family Quick Reference Service Guide, Vol. 1", on page 38 and 39:

40 Error (data transfer error)

(among other possibilities, these two seem most applicable:)

- The MIO card is unseated or defective - remove, reseat, or replace the MIO card

- An abnormal connection break occurred while transferring data from the computer.

The manual further indicates that a 40.1 means the MIO in slot 1 has the problem; a 40.2 means the MIO in slot 2 has the problem.

I'd try turning the printer off and reseating the card, and if that doesn't work, try swapping it out if you can.

let me know if you need further assistance, Joe

If it helps.please rate this solution.

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Mio P550

why not go and read crash.txt?
Or, just install MioMap once again?

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If you keep getting 80 service, first recycle the power to the printer (try a few times if the error doesn't go). If that doesn't work replace the MIO card (the bit the network cable goes in)

Jun 16, 2008 | HP LaserJet 4 plus Printer

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