After a power outtage my Xerox Phaser 8500n will not complete startup because of a 13,266.44 error. The service manual says that "the printhead reservoir heater took too long to reach its setpoint".
In service mode when I turn on the heaters and watch the temps, the first 3 sensors measure the head heating up to 140C then maintains 120C or 130C I think. The fourth sensor has a malfunction I think. It reads the correct temperature but sometimes jumps to 200C or drops to 20C for a second or two then goes back to normal.
I'm trying to figure out if there is a software problem because of a power surge or if there really is a problem with the print head since I hadn't restarted it in 5 months. I pulled out the print head and realized that there isn't an easy way to fix anything on the board since it is soldered to the metal head.
Any help would be greatly appreciated!
Print-head is shot... You'll need a new one, I see power spikes wiping them out quite often, Leaving your Xerox Phaser Solid-Ink printer on all the time usually isnt a problem.. but be smart about it... if a storm is comming or the forcast says lightning, shut it down :)
Unfortunately the Temprature probes in the print-head are non repairable, the only ones who can are the xerox repair depot in ohio, which requires what i understand to be a rather involved process with many specalized tools and technique's And the "under current" of the heater tells me that its not as much the probes as the heating element itself, which, same deal, Xerox Rebuild-shop repair only. Now... one thing i've seen agrivate this kind of problem is if the printer is under-volt'd at the AC mains, Many people dont understand the importance of good power to their electronics, and the average PC will handle rather horrible incomming power in stride, however thease printers can draw a peak of almost 1800 watts at Cold Startup, with that kind of peak demand you dont EVER want to connect a solid ink printer to ANYTHING but DIRECTLY to the wall.. No plug strips, no 2x6 Power-splitters, no extension cords (unless theyre short and 10ga wire or larger) and ABSOLOUTELY NEVER to a UPS unless your UPS is designed and built for heavy spike loads (only the largest Rack-Mount UPS's can handle the load) ... and in all seriousness you need to ascertain what else is on the circuit with the printer. A Server?, a High Wattage Computer? Coffee Pot?
I work on dozens of thease printers a month, and honestly i see 60% of the time problems can be tracked back to power.
The way to test, Turn everything off on the circuit (including the printer) measure the voltage accross the AC jack with your meter, then turn the printer on, if you see more then a 5% (usually about 3-5vac) drop in the first 10-15 min of printer life (startup proceadure, all the way to ready) you need to have your power evaluated by a professional electrician.
Long Story Short, If you dont have a power problem, you have about a 80% chance your print-head has failed, and a 20% chance your electronics module has failed. If you have warranty on the printer... USE IT!.. those 2 repairs out of warranty arent trivial or cheap, and i would HIGHLY recomend no-one try it themselves... Things can go Very Badly Very Quickly with tiny "Gotchas" in the print-head replacement process..
Hope this helps!
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I forgot to post an update. I did a little more diagnostic work and found that durring warmup, the reservoir heaters come on twice. The first time, both sides come on and heat to 145C-150C. The second time, only the black side comes on heating to about 150C while the yellow side stays at 115C-120C. This is what causes the 13,266 error.
Mechanically everything seems fine. Do you think there's a problem with the power supply dropping one of the heaters? Sometimes on a reboot after the 13,266 error durring post/self-test I get a 37,002 error saying the left something did not draw the expected power. Could it be a tripped fuse or something?
The data suggests it could be the head or something else, but I'm a novice printer tech and an expert at fixing computers. So it bugs me that I can't find a resolution.
It's not power since it is plugged into the wall with a 6' 10ga cord. I know the heater works because it turns on at the first turn on but not the second. I also only hear one click instead of two meaning only one is turning on. Do you know how much it costs to take it to a Xerox shop? I live in Seattle so there should be one close.
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