My dear Bambu friends, hi everyone!
I greet you from The Netherlands!
I hope someone can help me with the following AMS problem (I already made a support ticket to).
I send a print from Bambu Studio to the X1C.
The bed is heated and the nozzle gets heated.
The bed levelling gets executed and the filament gets loaded from the AMS.
The LED lights in the AMS with occupied slots are white and the white LED from the loaded filament is breathing white.
After the bed levelling the line calibration is executed.
The LED lights in the AMS with occupied slots are still white and the white LED from the loaded filament is still breathing white.
Then the purge line gets executed. When that is finished, normally the printhead goes to the middle of the bed and starts the actual print.
But in my case after the purge line is printed, the print head goes to the filament cutter and after that’s gets parked above the poop shute. All four AMS LED’s start blinking red, indicating there’s a problem with communicating with the X1C. At that point I also get the error message: AMS1 communication is abnormal. Please check the communication cable (0700 5000 0002 0001 1845 10)
This is what I tried to resolve the issue:
I cleaned the hot end nozzle with a cold pull.
I cleaned the extruder and filament cutter.
I’m only using Bambu lab filament and spools in the four slots.
I’m not using an external spool.
I removed the spools and filament out of the AMS and placed them back again.
I swapped the filament spools randomly in the AMS.
Powering off the X1C and powering on again.
I unplugged all AMS cables on the AMS and at the back of the X1C and plugged them in again.
I tried different filaments but it gives the error with all filaments.
The AMS LEDs are restored to normal again and are white.
Then I start the print again and all goes well, up until the actual prints has to start after the purge line. At that point all four AMS lights start blinking red again, the printing stops, the print head gets parked again and the error message appears.
I am not educated in measuring the electrical connections as in the article: AMS is not detected by the printer | Bambu Lab Wiki
Hi 3DTech, thanks for your help. I opened up the AMS, removed the bottom part, checked all the connections, placed everything back and connected the AMS again. The problem persists. Now when I turn on the AMS, eight out of 10 times, all the four LED lights turn to red in about 4 seconds.
im going through the sam problem. I even have 2 ams where the issue is in my first unit while theres no issue with the 2nd one. my first unit has been nothing but junk since i added 2 ams boxes. i do not recommend wasting your money on 4 cause 2 alone has been a nightmare. did you ever find a fix for this?
I completely de-assembled the AMS, disconnected all the wires and connected them again. I also removed the backplate of my X1C, took the opportunity to clean the internals, disconnected all the wires indide the X1C and connected them again. After that I had no more error warnings and flashing red AMS LED lights. Let’s hope it stays that way.
I’ll have to do the same… I have to units and they’ve been nothing but headaches. These new updates are damaging, wouldn’t doubt is Bambu Lab is copying the Apple formula and purposely does it so you have to buy more from them.
I have the same problem. Resistance on the B Dataline at the AMS main PCB is about 600 ohms above spec. They no longer sale the AMS Main board, so, I have to buy a whole new AMS to solve the problem.
If the board was just out of stock, it should show as out of stock and allow me to order it on backlog, but this is not the case, they just do not sell that board. SOB. “What a way to run an airline” an old friend would have said.
Depending how you are making that measurement, does that mean the issue is with the main board? If so, bigger connectors are sometimes hand soldered and could have cold joints. Anything look suspect? And if it’s the cable, they use standard connectors. You could make your own using the one you have as a guide.
It’s frustrating, right on the AMS main board to ground, the A Dataline is fine at ~4.5K. The B Data line to ground is ~5.6K. Even out of spec, that may not really be an issue, but I won’t know because they do not sell that main AMS board. They sell all the other boards. I should double-check that the female cable ends aren’t splayed out.
The resistance at the cable that plugs in the AMS is at spec as in the help guide.
I did order all new cables, a new XC1 Main board and about to order another AMS, but will not have it until the end of July.
I have a ton of stock, but never the part I need - lol.
Okay, here’s a weird thing making me think the board in the AMS could be the problem. If I turn on the X1 and after it boots, plug in the AMS, it works.
If I leave the two plugged together and turn off the X1, and then turn it back on, all four lights blinks after about 4 seconds or so.
Mine was kinda of the same symptoms. But after a few minutes it would flash red and start checking each spool. Send a little filament up the ptfe tube just to check it out i guess. And it would do that till i turned it off. That’s when i swapped connectors and everything worked right.
I faced a similar issue, but still not quite sure what exactly has fixed it. I ensured that all connectors were attached properly and seems to solve the issue.
I have a brand new X1C, just got it yesterday and the problems I am having with the AMS are as above. I would have thought that these issues would have been solved ages ago, seems I am wrong.
I spent over $2000 dollars on this system and i am very disapointed!