Question about Xerox Phaser 8400 Laser Printer

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My phaser 8400 printer is not turning on.

Till last night it was working fine, but to day mornig i try to power up the printer but it is not taking any power, i tried the printer by connecting to another socket and also by replacing power cord its of no use, pls help ,

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You have a bad power supply.

Posted on Dec 14, 2007

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Have your tried to check the cable? if done then its your printer powersupply fault or fuse blow! Plz checked it by some authorised person!

Posted on Dec 08, 2007

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1 Answer

Xerox Phaser 8400 When I turn on the printer I get a "service Code" 37,004.40:62674. Can you advise me what the code means?


37,004.4x - PEST_FAULT_RESERVOIR0_HEATER_DISCONNECT
PEST - Reservoir 0 Disconnect Reservoir 0 is not drawing the expected power from the supply.
1. Run the printhead Reservoir Heater test.
2. Verify printhead wiring.

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Aug 24, 2011 | Xerox Phaser 8400 Laser Printer

1 Answer

I have a xerox phaser 8400 printer that will not do anything, just reads "fault 37,004.40:32046" what can I do? Thank-you


The 37,004.40 error means that the ink reservoir is not heating up correctly. Make sure the printer is plugged in directly into the wall and not on a power strip and cycle the power to the machine (turn it off and back on). If the problem continues, you probably have a bad printhead which you have to replace. For the 8400 the part number is 650-4303-00. Iteminc.com has that part in stock and ships same day. Here is a video that shows you how to replace the printhead. Hope this helps and thanks for using FixYa.

Aug 16, 2011 | Xerox Phaser 8400 Laser Printer

1 Answer

Xerox Phaser 8400 error


When you power on the unit it goes through a series of tests to determine that the correct voltage is going to each system within the phaser. The error code you've provided implies a Preheater error 37,008.44
AC power supplied by power sources such as uninterruptible power supplies (UPSs) or DC-to-AC inverter systems may not supply correct voltage to properly power up the printer. Likewise, other devices sharing the same AC circuit can cause AC voltage sags that cause the printer to fail its AC heater PEST tests (Print Engine Self Test).
My first suggestion is to remove any other devices from the electrical outlet the printer is on, and then power it on.
If the error persists, you've got a hardware failure internally and would need to replace the preheater and deskkew assembley, Xerox PN 119641980
By the way, the last 4 digits in your error code are the current page count of your printer. This number is relatively low and thus it begs the question is the printer still under warranty? The part in question is about $110, however installing it will not be an easy task if you've never taken a Phaser 8400 apart or you do not have a service manual.
My suggestion, if the machine is out of warranty, is that you bring it to a qualified repair technician for service, unless you feel comfortable doing the repair yourself.
best of luck in any regard




Sep 01, 2009 | Xerox Phaser 8400 Laser Printer

1 Answer

Phaser 8400 error code 37,016,43:7052


From the service manual:

37,016.4x - PEST_FAULT_HM_CLUTCH_DISCONNECT
PEST - Head maintenance clutch disconnect. The head maintenance clutch is not
drawing the expected power from the supply.
1. Run the Head Maintenance Clutch test.
2. Check the Head Maintenance Clutch wiring.
3. Disconnect the Wave Amp signal cable from the left
side of the Electronics Module. If the error code
changes, replace the Wave Amp.
4. Replace the head maintenance clutch.

I have the full service manual available should you need it. Thanks and please take a moment to rate this solution as fixya.

Feb 22, 2009 | Xerox Phaser 8400 Laser Printer

1 Answer

Xerox Phaser 8400 gets no power


I have been hesitating on answering this because people hang me out to dry on phaser printers when I give them good info. But here goes.
What you can try is go to the back of the machine, whre eh on off switch is located. there are 2 larger thumb screws you twist to align with the back frame. That holds the main board in place, Losten them, remove the main board, reseat the RAM memory into its slots, re insert the main board and try turning it on. If that doesn't work the most likely problem, ( 90 % likely) is the electronics module. And I am sure you did not pay as much for the machine as an electronics module would cost, Generally they are over $1000. Best price.

Jan 21, 2009 | Xerox Phaser 8400 Laser Printer

1 Answer

Phaser 8400/8500/8560 maintenance kit


No, it will not work because the chip (CRUM) is not compatable.

Jan 13, 2009 | Xerox Phaser 8400 Laser Printer

1 Answer

Error code 37,002.47:45116


37,002.47: PEST Error - Left jetstack disconnect. The left jetstack is not drawing the expected power from the supply.

Try turning the printer off for 10 minutes or so, then turn back on. If the error happens again you will need to have the printhead replaced.

Make sure the printer is plugged directly into a wall outlet, not a surge protector or multi-outlet strip. These devices will not let enough power reach the machine, causing most of the 37 series of errors.

Sep 08, 2008 | Xerox Phaser 8400 Laser Printer

2 Answers

Xerox phaser 8400 fault


I have the same problem. Xerox says they need to send someone out and can not tell me what this code means.

Prior to the error I have having light streaking on the page. Took everything apart and cleaned and it worked OK for 2 days then returned to streaks.

If anyone knows what to look for please offer assistance.

Jul 24, 2008 | Xerox Phaser 8400 Laser Printer

1 Answer

8400 Phaser Says "Out of Ink" when I can see ink in there


Look at the posts on fixyourownprinter.com. I read through some a few days ago and there was a lot of information about your problem. Most were cautioning about using generic ink in that printer was a problem because of melting temperatures. Good luck

Aug 30, 2007 | Xerox Phaser 8400 Laser Printer

3 Answers

Xerox phaser 8400


The first obvious question is, "Does it have blue ink/wax?" Is it displaying any errors? Have you tried the Xerox support site? They have a fantastic utility that can connect to your printer and diagnose many problems. Here's the URL for the utility: http://www.phasersmart.com/ They also have a wealth of information in their knowledge base. Here's the URL for the support page for the Phaser 8400: http://www.office.xerox.com/printers/color-printers/phaser-8400/sprt-enus.html Did anything happen before the blue quit printing? Have you tried running a cleaning cycle?

Aug 21, 2007 | Xerox Phaser 8400 Laser Printer

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