Xerox/Techtronix Phaser 8200

[blackcat4866]

I don't know what to make of this. I'll welcome any opinions.

I'm getting white streaks through the cyan part of the image. I've gone to the Support Menu, Eliminate White Streaks and ran the cleaning several times. Here's the weird part: the void area moves around. You know how the boxes are numbered on the cleaner page? So at first cyan is blank from 70 to 110. I run cleaning. Now it's blank from 20 to 50. Run cleaning again. Now it's blank from 55 to 80 and 120 to 130.

I was under the impression that this is essentially inkjet technology, and that the solid ink just needs a little more heat to become liquid. So a clogged printhead should not have clogs that move around. Could there be air bubbles in there that need to be purged somehow?

I did follow the destructions, and power the machine off, then power on four hours later and try again. Other than consuming a lot of solid ink, I don't think I'm getting anywhere. Any ideas? =^..^=

[JustManuals]

What's your email? I'll send you the Parts & Service Manual.

Paul

[blackcat4866]

Too late Paul. Don't you remember? It was Monday or Tuesday.

It's the thought that counts. Thanks. =^..^=

[blackcat4866]

Anybody? =^..^=

[jsw2k]

I'd love to help you, but these print engines are completely alien to me. Maybe try prying off the "XEROX" badge?

[CT Copier Repair]

Blackcat

Here ya go

Random Light Stripes


One or more color bars are missing on the test page. This is likely caused by


a weak or clogged Printhead jet.


Initial Actions


■


Run the Eliminate Light Stripes routine from the Control Panel.


■


Check the exit path for debris or contamination.


Troubleshooting Reference


Applicable Parts Example Print


■


Printhead


■


Drum Maintenenace Kit


■


Stripper Carriage


Random Light Stripes Troubleshooting Procedure


Step Questions and Actions

Yes No


1



On the Control Panel, select the Eliminate


Light Stripes


function and follow the


procedure on the printed pages. For 8400


printers, this step does not include Jet


Substitution.


Did this correct the problem?


Complete. Go to Step 2.


2



It may be necessary to repeat Step 1


up to 3 times if the stripes still appear.


NOTE


If there are discolored jets, print the


solid fill test print in the color with the


discolored jets. In the following


example, the yellow stripe has


discolored jets, therefore you would


print the yellow solid fill. For


instructions on printing solid fill test


prints, see “Black, Red, Green, Blue,


Cyan, Magenta, and Yellow Solid


Fills” on page 5-42.


Discolored jets usually clear after two


or three prints, using the problem jets.


3



Clean the exit path and Stripper Blade with a


lint-free cloth.


Did this correct the problem?

Step Questions and Actions

Yes No


1



Clean the exit path and Stripper Blade with a


lint-free cloth.


Did this correct the problem?


Complete. Go to Step 2.


2



Remove the Drum Maintenance Kit and wipe


the clear plastic wiper blade with a lint-free


cloth.


Did this correct the problem?


Complete. If the problem


persists,


follow the


steps for


“Random


Light Stripes”


on page 5-3.

[Scarecrow]

Try increasing the voltage to the head - to max - number 256. Run 5 solid color prints - of the color(s) in question - to blow out the crap in the port(s). Set voltage back to normal and run the stripes test, not the routine, to see how it worked. May have to repeat the process again. This process could blow the piezo crystals in the head but the head isn't any good anyway. Haven't blown a head yet, but I have had some ports that were either blown or would not clean out.

[blackcat4866]

Thanks Scarecrow. I have a parts machine I can scavenge from.

If this fails, is there any special calibration setup if I swap print heads? =^..^=

[Scarecrow]

Nope, just pop it in. Just be sure to set the head voltage back to default - 128.

[blackcat4866]

OK. I'll post back once I get another chance at this machine. =^..^=