Question about Xerox Phaser 8400 Laser Printer

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Fault 37,002.47:338665 Service Needed Fault 37,002.47:338665 Fan runs. I tried restarting after turning off for 5 mins, without network cable attached. Fault code still appears. I telephoned Xerox engineer and they diagnosed a faulty print head. I am not an expert, but print quality was 100% fine just before the fault. Help!

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From the service manual:

37,002.4x - PEST_FAULT_JSL_HEATER_DISCONNECT
PEST - Left jetstack disconnect.The left jetstack is not drawing the expected power from
the supply.
1. Run the printhead Left Jetstack Heater test.
2. Verify printhead wiring.

Yes, could be faulty printhead, but could be faulty power supply as well.

I have the full service manual available if you need it. Please take a moment to give this solution a rating of fixya. Thanks!


Posted on Mar 10, 2009

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Posted on Jan 02, 2017

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I share a informative links please visit for more info.
http://h20566.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay/?spf_p.tpst=kbDocDisplay&spf_p.prp_kbDocDisplay=wsrp-navigationalState%3DdocId%253Demr_na-bpl07020-1%257CdocLocale%253D%257CcalledBy%253D&javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken

http://www.advancedlaser-hp-error-codes.com/error_49.htm

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Have you first of all just turned the printer off and restarted it?
I assume you have, but just asking as a starting point.
Not sure how you are running it, so I will assume your running it via a ethernet connection.
Now where to start LOL.
1. Do you know the machine IP address? If so log into your browser, Internet Explorer, firefox,etc and enter the IP address into the address window and see if the printer information comes up. Also try and ping the printer. If that is not successful,
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3. On the printer, check the connectivity or network settings. Look under the IP settings, make sure it is not set to Auto. If it is, then the machine has most likely assigned itself a new IP address. If thats the case, if you have a configuration report from when the printer was set up, change the DCHP setting to manual or static, then re enter the IP address. You can also find the IP address assigned by looking into the printer properties, ports and see the IP address in the port assigned to the printer.
4. You can try running it on a USB cable, if you or a laptop is close enough to the printer. That way you can confirm a network or addressing problem. I will say, if there is a problem with in the printer, most of the time it will give you a fault code, and those printers are very stable when it comes to the NIC and other circiut boards, if it says ready, I very seriously doubt the printer itself is at issue.
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I suspect in order, an addressing issue, IP address related, or a bad cable.
let me know ok. Or ask if your not sure what to do.

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