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Frustrating: Check X Axis Length Error  

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MikeL
(@mikel)
Active Member
Frustrating: Check X Axis Length Error

Hi All!

I know this topic has been hashed and rehashed many times and believe me I have read all of the posts and followed some of the advice that worked for others including breaking down the extruder assembly and reassembling, carefully rerunning the wires and placement of the zip ties. I even replaced the X axis rods and bearings. The extruder glides like it is on ice,sans belt. Unfortunately, none of that has fixed my problem and I am tending to think it may be hardware related; this is where I could really use some insight from the experts here on what pieces of HW could also throw off the "check x axis length" message or other things to try.

During a self test the x axis does move back and forth but not the full length without stopping on the error message.

Additionally, this all began when the filament that was fed from the dryer box became tangled and pulled the box off of the shelf, which is slightly higher and to the left side of the printer. When I walked into the room where I do my printing, I found the dryer box on the ground and the printer stopped on the error mentioned. Visually I could see no damage or scuffing on the printer or the box, so I am not sure that the printer was hit, but at some point there had to be significant tension on the x access bars and gears as the extruder attempted to continue pulling filament until it crashed.

Additionally, I have tried a belt test which moves back and forth but fails on the same error. I have also tried to test the filament sensor and it too fails.

I am really feeling out of options and could use the help of the experts here in trying to fix my printer. Other tests? Parts? Steps?

Many thanks in advance for your time in reading this.

Best Regards,

Mike

 

Posted : 04/01/2021 4:44 pm
Diem
 Diem
(@diem)
Noble Member
RE: Frustrating: Check X Axis Length Error

Does it move the full width, freely, under finger pressure when switched off?

Cheerio,

Posted : 04/01/2021 5:38 pm
MikeL
(@mikel)
Active Member
Topic starter answered:
RE: Frustrating: Check X Axis Length Error

@diem

Yes it does. Smooth and steady all the way from side to side. I also ensured that the cable bundling and ties are not touching either side as I read where that caused issues for some.

Thanks!

This post was modified 10 months ago by MikeL
Posted : 04/01/2021 6:03 pm
MikeL
(@mikel)
Active Member
Topic starter answered:
RE: Frustrating: Check X Axis Length Error

@diem

I forgot to mention that when I select 'auto home' the extruder finds its way to line up slightly off the center mark, with the nozzle right above the 'R' in oRiginal PRUSA. 

Posted : 04/01/2021 6:27 pm
MikeL
(@mikel)
Active Member
Topic starter answered:
RE: Frustrating: Check X Axis Length Error

Sorry, it is correctly auto homing now. Just can't get past the check x axis length.

Posted : 04/01/2021 8:11 pm
Diem
 Diem
(@diem)
Noble Member
RE: Frustrating: Check X Axis Length Error

OK, and is the x axis level, ie, the two Z leads are at (close to) the same height?  The printer will calibrate and adjust them but they need to be in the ballpark first.

Cheerio,

Posted : 05/01/2021 12:10 am
Peter M
(@peter-m)
Noble Member
RE: Frustrating: Check X Axis Length Error

If you move x-axis to the left, the 2 screw of the fan need to almost touch the z-axis, look on the prusa website for the picture that points out how it should look like, the left position of the x-axis, there is a manual on the prusa website

The 2 screw need to be turn in all the way on the fan.

Posted : 05/01/2021 11:49 am
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