Question about Xerox Phaser 8400 Laser Printer

2 Answers

Fault message 37,004.40

We replaced the printhead and have reassembled it. Now, after turning it back on, we get the following message: Service Needed. 37,004.40:112923. The message from the service manual says: 37,004.40: PEST - Printhead Reservoir 0 disconnect. Reservoir 0 is not drawing the
expected power from the supply.
WHAT DOES THIS MEAN AND WHAT DO I DO NOW?? Please help.

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Sir, you are having the problem after I provided the first solution to you. I'm nandini789. Sir, do you think that it is my fault.

Posted on Sep 04, 2009

  • Nandini Dhar
    Nandini Dhar Sep 04, 2009

    You can take the following tests to make sure for errors:-
    1. Run the printhead Reservoir Heater test.
    2. Verify printhead wiring.

  • Nandini Dhar
    Nandini Dhar Sep 04, 2009

    112,923 is the page count. As far as the error goes. Sometimes this can be cuased by a voltage sag on the circuit due to the extreme amount of power used to warm up this machine. Always plug straight into a wall outlet. Make sure no other large appliances are on the same circuit such as personal floor heater, another laser printer, copier, coffe makers, etc. Xerox recommends trying another circuit. The reservoir is in the printhead. the ink loader melts the sticks and they drip the ink into the reservior where it is heated until it fires out the printhead nozzles. Another thing that can cuase this error is being moved while the ink is hot. The reservoirs are not sealed on top so it can spill out and damages the printhead board or wiring. Usually though it comes down to the printhead which arent cheap. Thank you.



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That error code means that you need to replace the Printhead, maybe the printhead power supply failed, and not receiving enough power to function. Call your manufacturer and they will send you a printhead.

Thanks

Posted on Sep 04, 2009

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1. Run the printhead Reservoir Heater test.
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1 Answer

Error in xerox phaser 8400


37,004.40: PEST - Printhead Reservoir 0 disconnect. Reservoir 0 is not drawing
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One of the printhead cables may have come partially unplugged. Also, an ink spill on the circuit board could lead to this problem.

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