Where do I send my Xerox Phaser 8550 printhead for repair?

No, the noise is made when the printhead cannot tilt back and forth which is caused by either a bad camshaft or process drive motor, they are available in a kit, the part number is 8500-Z2. See link below:

http://www.iteminconline.com/8500-z2_8500-z2-xerox-8500-process-camshaft-kit-includes:-process-motor-drum-maintenance-camshaft-transfix-camshaft-installation-instructions.htm

Phaser 8500/8550 Support - Xerox Support and Drivers

www.support.xerox.com/support/phaser-8500-8550/.../enus.html
XeroxProduct support for Phaser 8500/8550. ... Phaser 8500/8550 Support & Drivers. Customer Technical Support. Fast Track to the Expert > 1-800-835-6100 U.S. & ...

Try printing a light stripes test page (Troubleshooting, print quality problems, troubleshooting print quality page).
If you have loads of missing jets, run a couple of head cleans, if you see improvement, it is worth running some more, if not, try switching off overnight and rebooting next day. If it still won't clear, you may have a faulty printhead.
If you do not appear to have many missing jets but the colours are all just wrong it may be that the ink has gone stale. Run a couple of head cleans and you should see the colours start to improve. If it is getting better, all you can do is keep running head cleans until you have replenished all the ink in the printhead well.
Hope this helps.

Hi there
The onlty thing I can find close to this is.
Acording to the manual its a ink loader error like your loading the wrong type of ink like the puzzles pieces arent matching and hitting the sensor flags right. Yours by the 8 is referring to the black ink. Anyway go to troubleshooting on the control panel. then to service tools. when in service tools press and hold the up arrow while still pressing the up arrow press the down arrow. the display should say hidden menus. go to diagnostic mode press enter go to funtion menu. then go to clear ISC fault and enter. ISC=ink stick count fault. I hope that helps. Just to let you know Ive had nothing but problems with third party ink and once its in the system its hard to get out so I would watch what im doing with my expensive equipment

13,327.42: The Printhead reservoir thermistor returned a bad reading, or the
reading was corrupted by ESD.

Try :

• Are all components grounded properly?
• Run the Printhead Reservoir Temperatur test. Did the test pass? If not replace the Printhead.
• if it did pass check and reseat all wiring to the Printhead.
  Did this correct the problem? if not replace the print print head.
  
• 
  
• Go to www.iteminceonline.com and order a new one they will send you the instructions on step by step how to replace the print head and you can call them for free technical support. Goodluck
  

Hi outonalimbwi:
Here is your problem.
37,006.42: PEST - Drum disconnect. The drum heater is not drawing the expected power from the supply.

Troubleshooting Procedure
Step Questions and Actions Yes No
1 1. Run the appropriate diagnostic test:
37,002.47 = Left Jetstack Heater
37,003.48 = Right Jetstack Heater
37,004.40, 37,005.41 = Reservoir Heaters
37,006.42 = Drum Heater
37,008.44 = Preheat Heater
37,009.45 = (8500/8550) All ink melters
= (8400) Ink Melt 1
37,010.46 = (8500/8550) Ink Melt 1
= (8400) Ink Melt 2
37,011.47 = (8500/8550)Ink Melt 2
= (8400) Ink Melt 3
37,012.48 = (8500/8550)Ink Melt 3
= (8400) Ink Melt 4
37,013.48 = (8500/8550)Ink Melt 4
2. Did the test pass?
Go to Step 3. Go to Step 2.
2 1. Check the wiring running from the component to the printhead.
2. Is the wiring damaged or not working properly?
Replace the wiring harness.
Replace in the following order:
■ Drum assembly
■ Preheater
■ Printhead
■ Ink loader

You need to run the eliminate light stripes. it should be in the menu, under troubleshooting, print quality issues. you can run this up to 3 times. you want the run the basic light stripes, not the advanced. If after 3 times running this, you are still missing jets, your printhead is bad. If you are using aftermarket ink, media sciences might cover the repair, if not, the printhead costs as much as a new machine. about $650+labor.

The exact explanation per xerox is " The Printhead is stuck in the tilted position, and is not able to tile forward to the print position, due to problems.

This is usually caused by broken printhead restraints, of the machine got shut off in the middle of warming up, and the printhead is stuck to the cap wipe assembly.

Regardless the machines covers will have to be taken off to go any further.

Hi Don,

Looks like you need to download the driver for 64 bit windows, I believe there have been some issues with 64 but hopefully this will help!

Try installing this driver - Windows PostScript PPD Driver Files - 32/64-bit

Use this link for any further problems with you 8500 -

http://www.support.xerox.com/SRVS/CGI-BIN/WEBCGI.EXE?New,Kb=x_8500_en,Company={683D76C8-B5C5-416E-9754-DD015FDB4F2E},ts=x_main_en,ques=ref(Country):str(USA),ques=ref(Prod_8500_8550):str(8500_8550),question=ref(ProdFamily):str(Prod_8500_8550),varset=Xcntry:USA,varset=Xlang:en_US,varset=prodID:8500_8550,varset=prodName:Phaser%208500/8550

On the machines left frame, about midway back near the bottom there is a stainless steel block that the print head shaft runs through.
Pull the spring assembly off and locate that up and to the left.
The print block is about 1 inch square,and is most likely contaminated with some ink and needs to be removed from the shaft and cleaned. Also remove any loose ink around the print block that you can.