Vertex K8400 - Auto home problem

[RakeMake]

Another problem with my Vertex K8400 (Can you IMAGINE!?)

My printer has been on and off “broken” for months now, but I thought that I finally fixed it, but of course another problem arose.

Whenever I start the printer, and select auto home, it travels slightly to the left (x-axis) for each time I select auto home.
Then this position is the new “start position”. If I manually select to move the x-axis, it interprets this as the start position.
All this also applies to when I begin a print. So the starting position is shifted to the left every time.

Anyone ever encounter something like this?

Thanks

[Netwizz]

Sounds like one of the belts or more likely the pulley is slipping. There’s upgraded pulley with 2 grub screws available, much less likely to come loose!

[3DVisio]

Check, if Repetier got the default K8400 printer settings for dimensions, directions, etc…
In Printer settings, look for parking position. My setting is: X:200, Y:200, Z:0
Inverse Direction is set only for Z axis.
For Printer Shape, i got these settings (see attachment)
‘Bed left’ could be different - i got printed my own dual extruder holder for using 2 e3D’s.
Hope, this helps…

[Impact_HUB]

Clean your optical sensors.