Rabbit Laser Bed Won't Raise back up

[Michele Welch]

I just turned my laser on to work on a job and I can lower the bed but it won't raise back up. I try to do the auto focus and it lowers just a little bit instead of coming up and doing the auto focus. It's just very strange that it goes down but does nothing when I try to raise it back up. Any suggestions? Of course, I have orders that need to get finished!! Thanks in advance!

[Jerome Stanek]

can you reload your parameters from a good one. I have mine saved on my desktop and also on a USB drive

[Michele Welch]

I'm sorry, I'm not sure what you're referring to. Left, right and down all work to move the bed, but it won't come up. Is that in the parameters?

[Bill George]

Is it belt or chain drive, look and see if it came off or is jammed. If Ray can’t help you can maybe unplug the motor and turn the shaft by hand.

[Kev Williams]

If worse comes to worse, with the machine off you can raise the table manually-- either by hand-rotating one of the table screws (hard way) or locating the long chain or belt below the cabinet that moves all the screws, and yank on it to raise the table (from the front of the machine, yanking from right to left should RAISE the table)

as for why it won't go up, my guess is the up-limit switch -OR- the auto-focus switch is stuck-- the machine won't raise the table if it thinks it's already all the way up...

[Jeff Body]

If worse comes to worse, with the machine off you can raise the table manually-- either by hand-rotating one of the table screws (hard way) or locating the long chain or belt below the cabinet that moves all the screws, and yank on it to raise the table (from the front of the machine, yanking from right to left should RAISE the table)

as for why it won't go up, my guess is the up-limit switch -OR- the auto-focus switch is stuck-- the machine won't raise the table if it thinks it's already all the way up...

I've seen too many people post this problem. 99% find out their auto-focus plunger is stuck.

[Scott Marquez]

I've seen too many people post this problem. 99% find out their auto-focus plunger is stuck.

I was thinking that or the upper limit switch is engaged.
Scott

[Jerome Stanek]

on my old laser the parameters got messed up and the table only would go down that is why I had to reload my saved parameters.

[Matt McCoy]

Jeff has the answer — autofocus plunger is stuck.

[John Lifer]

Ok, the auto focus pen is not stuck it most probably has a loose magnet. There is a tiny magnet in the top that is epoxied onto the rod that moves.
Mine came loose and after playing with it and the new one, i decided to to the proper thing. REMOVE AND Put in the toolbox. It isn't worth the risk of using this POS.
I crashed my head into my bed twice when it failed. Do the proper thing......

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[Michele Welch]

Well, auto focus it was! And it was my stupid mistake because I had just cleaned it when I turned the machine on and didn't realize it had stuck. Thanks y'all! I always know where to come to get great answer to my stupid blonde mistakes!!!