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Topic: Linear Encoder 3360

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Linear Encoder 3360
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Hi,

Has anyone tried to replace linear encoder on the Vutek 3360...
Is it possible to do it alone without the help of Vutek service ?



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ellsmako2
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Are you talking about the reader or the actual strip. It can be done but there are several steps. it is only stuck on with 3m double tape. There is a kit available. You need to make sure you are straight and stay in line. Remove read head makes it easier. It is a pain.. How much for Vutek.

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In fact, a problem that made us to think about replacing the encoder strip is that we have a vertical lines on the test of the heads. 
Few days ago we replaced lot of heads ( old was in very bad condition ), and there are still vertical lines in the test. 
So we thought that the problem might be in the encoder (reader), we replaced and put new , but there are still lines. 
Option 2 is to check the strip , right ?

 



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gregwallace
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I assume you've cleaned the stip. I get vertical lines whenever I try to run at max speed setting. What speed are you running at? If the lines go away when you change speed then the encoder strip is fine. Try running on quality if you havent already.

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Yes , we cleaned strip .

Vertical lines are visible only when we print in standard and max mode ( especially is visible when we print test of heads ).....if we print in quality , then it is ok and test is perfect ..

 

 

 

 



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ellsmako2
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What are you cleaning with ?

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gregwallace
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Are the lines in the same place every time or do they vary?

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We cleaned the strip and reader...strip with clean cloth , then with isopropyl alcohol ( recomended from Vutek service....) , reader with cloth ....

 



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there is a difference in the test print , and depending of direction in which the head moves, the left to right and rihgt to left ...

you can see pictures....



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ellsmako2
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ok dumb question , but how does it print solids like grey, orange blue ( light and dark ).

Verify head temp and voltage. clean encoder with windex ( yes windex ) and then Isopropanol


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It depends of speed, in standard and quality looks great , but in max you can see vertical lines ...

I didnt sent pictures of other heads , but they all look like this 4 , so it is same in all colors, whether light or dark

Head temperature and voltage according to information from Vutek are ok ...

I saw on Wikipedia that the composition Windex has some kind of solvent, it might in some way maybe damage the encoder ?

 



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gregwallace
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So the lines only show up on max speed? Is that on ultra or enhanced? Just curious.
What do the actual prints look like? Test prints will always look better at slower speed.
If the stip has dust or other contaminates on it I do not think speed would matter.
Are the lines in the same place every time? If you swapped the two magenta heads would the lines remain on the right one only?

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ellsmako2
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primary ingredient in windex is ammonia, it will not harm strip ( using it for 10 years on same strip ), use a soft lint free cloth. first windex until clean then iso propanol to remove any windex water traces. What condition is you carriage belt. if encoder and reader are good then you may be getting a vibration .



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Chaitanya
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Hi, I feel the problem is not with the encoder strip. You need to check the carriage bearings for that. See if there is any play comes in bearing. You need to remove entire carriage to check the bearing. I think by changing carriage bearing and carriage belt tension you can get reed of the problem.



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Chaitanya
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my email id is cmthorve78@rediffmail.com . if you want further help mail me few images of print and i will provide you solution.

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ellsmako2
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Ie vibration is bearing and or Belt for the carriage.

Start with the easiest to verify. Like belt tension and cleaning.

 

 



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gregwallace
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I agree with Chaitanya as well. The problems I have had on high speed usually result in a scrambled file. It makes sense that if the carriage is vibrating then the dots are jumping and missing their proper placement causing a void or white line where the dots should have landed. Do you oil the rail frequently?

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