print shifting to left with each pass

[tsgstl]

Mutoh 1204
Flexi 8.5v1 and RIP
Material doesn't make a difference

I am at my wits end with this problem.
I am printing full coverage and after 4'-7' it starts shifting to the left. Then it starts printing lines off the page.
I worked on this everyday since last Saturday and finally by Thursday afternoon I had to put it aside and work on other jobs. It seems to be a problem with full coverage. Thursday and Friday it ran all day long doing everything from banners to decals to yard signs at least 100' of vinyl no problem. I thought maybe it was a file problem so I have printed everything you can possibly print. I have used every profile every setting. All test prints come out perfect. I have wasted at least 100' and of material and 30+ hours on this problem. Is it something going out? I just don't know what other direction to take. I have never had this problem since I have had it in 08.

 

[Letterbox Mike]

Clean your encoder strip.

 

[tsgstl]

Thanks man I'm driving back up to the shop to try that. I have cleaned everything else but not that.

 

[Letterbox Mike]

Just make sure you only use a lint free cloth lightly dampened with water, distilled water if you can get your hands on it. DO NOT use any sort of solvent or abrasive cleaner on it.

 

[tsgstl]

Oh man thanks I would of searched before I did it but if I couldn't find it I would of used a cracked open cleaner cartridge. I have distilled water right here. Always have lint free clothes. Thanks again!

 

[goldlight]

encoder scale

ur encoder scale is shifted to right lose all scrow which hold encoder scale movw the scale to right posoition and fix the holding screw u will see the result>>>

 

[tsgstl]

it was the encoder strip actually. I cleaned the strip with distilled water like mentioned above and it has been perfect since. Thank You