(apologies up front if this is a bit long-winded, want to convey what I’ve done to try and resolve)
Hello! and thank you in advance for any suggestions/resolutions - I finished setting up a brand new A1 Combo a couple hours ago, connected to my wifi network and began the calibration process. Nope.
What occurs:
•The Z axis will travel upward about 20mm, then back down 20mm where it started
•Then back up 20mm, to the right about 20mm, to the left all the way to the filament cutter (that I took off; which was something mentioned in a post, and on a YouTube video).
•The bed will move all the way back, then forward half way while simultaneously the print head will travel to the middle
•Next, the print head will raise only about 10-20mm and generate the Calibration Failed message.
The pop up Error has given different codes, yet identical verbiage: “Printing stopped because homing Z axis failed”
[0300-40000 041530]
[0300-04000 041545]
[0300-04000 041608]
[0300-04000 041617]
[0300-04000 041633]
• Machine Assist shows (2) issues: 1. “The toolhead is malfunctioning, please restart” 2. “The data from extrusion force sensor is abnormal, the sensor should be broken”
Attempts to resolve:
• Visually verified to ensure no debris in either lead screws
• Also checked for any debris in the belts
• Disconnected the AMS Lite unit; just in case…
• I have removed the cutter from the rail; mentioned as a fix/resolution
• I followed each of the guides within Bambu Handy, read through related posts, searched YT etc. to no avail.
• USB-C underneath; and on top of the print head; checked, removed, refastened, checked again and repeated the process a second time.
• The guide for the extrusion force sensor… I took the back plate off the print head, checked the two posts to see if were proper and tighten; they were, and checked again to make sure not loose.
• I also removed the device from my app, then re-added it; just for giggles as sometimes that resolves issues for other things.
Incredibly frustrating to say the least, if anyone has a fix/resolution to pass along please do, as I’m really not looking forward to boxing everything back up and returning it - ugh.
I am sorry to read about your unpleasant experience.
I don’t have a solution, and as it is a new printer, I advise gathering the printer logs and opening a trouble ticket.
While waiting, record (film) the problem and all the steps you did to identify the cause following troubleshooting indications. Write or print the troubleshooting number on paper and use it when recording the video, i.e., make it visible within the printer or nearby.
Add this record to the trouble ticket.
Your printer likely has a faulty component, and the swift solution is for BL to post a new one for you.
If the problem is solved, you cancel the trouble ticket.
I have the same problem. I switched to a 2mm nozzle and that worked fine. Then this morning I switched to a 4mm hardened steel nozzle. After I did this, I always get the same message as you did.
I’m going to try reinserting the nozzle and see what happens, as that was the last change to my printer.
I just got a new A1 and it failed on the initial calibration at the same point. The Z axis.
The difference with mine is that the Z axis doesn’t move at all. Not even a little bit. Tried the usual troubleshooting steps with reinstalling cables and the extruder nozzle but nothing. Didn’t get to take the baseplate off as its a brand new machine so Im a little nervous dismantling it!
TIcked raised with support but extremly dissapointed!
My sincere apologies for not having responded/updated MUCH earlier once I was able to clear the issue. (in short, I’m not exactly sure what the problem was, yet it resolved)
I was able to get my printer working, I’m not exactly sure where/what the issue may have been though and essentially what I did was:
I waited until the next day as it was getting late into the evening.
unplugged the printer from the wall outlet.
disconnected the AMS just to ensure I wasn’t encountering any additional issues etc.
unplugged the USB-C underneath
removed the device from the app, then uninstalled the app from my phone.
checked the firmware version, i don’t recall if I had updated it or not
grabbed a nice cold adult beverage, and waited a few minutes
removed the filament, opened up the extruder front cover, removed the silicone sock
(heated the nozzle) used the needle to clean out the nozzle to make sure there wasn’t any issue or rouge piece.
reloaded and used a different roll of filament
Began the process again
Remarkably, somewhere along the way I managed to resolve the problem, or it “resolved on itself”.
Thankfully I was able to get it working, and it’s been flawless to this day.
Waiting until the next day/taking a break and trying to use some patience helped quite a bit.
I’ll say this - unless there’s a significant change in printing/hardware etc. I’ll always use a Bambu printer - “they just work!”. I compare them to Apple Mac computers (I know… I know… so please don’t digress too much lol) - “they just work”, from opening the box to printing is (normally!) only a few minutes.
Hang in there and hope it all resolves for you and you’re able to start printing ASAP and enjoy the experience!
After a Factory reset or a Firmware update, once either process is complete, power off the printer and then power it back on, never try and print right away as it can cause conflicts.
Its the famous “Have you tried turning it off and on again?” solver
Perhaps @JonRaymond should see this, as it is happening with every printer (except the X1C). I can’t even print at this point, but that is also caused by something else (see Help Me! My Printer Is Trying To Self-Destruct!). I think the next update should fix this, hopefully…
I had this same issue on my new A1 i just picked it up…
There are 2 black brackets screwed on the arm which does not get the arm move up or down at all.
The manual does not mention anything about removing these screws.
We need to remove these brackets. Once removed everything worked and calibrated fine. Now since i calibrated 4-5 times i am sure its not good on the new belt as it was making loud skipping noises before.
Just to add to this received brand new print today, would not calibrate two errors show. Heat tool error and z axis (or something along those lines). Found that the usb c underneath wasn’t full in and when I fixed that all ran fine and calibrated.
This fixed the issue! The printed manual shows black foam pieces that holds the z axis during shipping which were replaced by the plastic screwed brackets.
Thank you for pointing out this. Cheers
Also a new BL A1 user here, and so grateful for the info in this thread.
That loud clicking/clonking noise during calibration (the Z-motor trying to move the arm up/down) was very worrying indeed; the manual (quick start) doesn’t mention removing those black brackets (but having done so, it’s blindingly obvious that they will prevent the arm from moving up and down).
An errata sheet with each A1 printer would not go amiss, I feel.
I am no longer sweating buckets, and will go and have a lie down in a dark room with a beer as my A1 now calibrates to its heart’s content.
You need to remove two black blocks holding the beam affixed to the vertical arms. (sorry I don’t know the proper terminology.) I didn’t see this anywhere in the setup directions or the setup videos. This may be something new as my printer came with an updated kevlar power cable cover. It seems to be working fine after I unscrewed and removed these brackets. I’m calibrating it now, fingers crossed.
I had the same issue. Turned out the usb-c cable you’re supposed to slide in to connector underneath the printer caused my headache. Im not even sure i paid really a attention to it while assembling. This thread was a huge help!
A bit of a green tape on the connector would help to notice such an important piece of the device.
