The Cutter is Stuck Error #2

Bambu Lab P1 Series Troubleshooting
1

My fairly new (less than 100 hours) had filament stuck in the extruder, I removed and cleared the blockage. Ever since I cannot print and get the ‘Cutter is stuck’ error message.

I have read through previous threads, but no luck in fixing as yet.

I’m 99.9% sure I have all the cables connected & seated properly.

The fan does spin briefly when switched on, and I can manually turn the fan on via the front panel, so I’m pretty sure the filament cable is connected and seated properly.

I cannot see how to access the rear of the cutter lever arm to check the magnet is in place, how can I do that?

I have ordered a spare sensor cable just in case, but likely not here for a week.

Anything else I can try?

TIA

2

@Jokani
The printer shows that the cutter is stuck | Bambu Lab Wiki

3

Yep I read through that, it did mention the magnet, but I’m unsure where that is or how to check it.

As that was a year or so ago, I’m hoping someone has something further to add.

4

Remove the front cover and you can better see the entire cutter assembly.
I added some text to pictures. Even though the page is a year old, if you have a P1S it is 100% accurate still. That just the page revision date.

With the front cover off, push the cutter lever inward and you should see the Cutter Blade move into and out of filament path through the extruder.
The cutter lever is spring loaded and SHOULD spring back on it’s own which should pull the cutter blade out of the filament path.
Make sure the cutter blade is attached th the cutter lever and that the lever/blade assembly is free to spring back when you release from pushing it.
The magnet, if missing, has activated the switch but absent the magnet, it can not deactivate the switch.
Do you have a set of metric hex drivers in 1.5mm, 2.0mm, 2.5mm. You absolutely will need those hex drivers to work on printer.

Cutter Lever
Cutter Lever610×757 33.2 KB

Red arrow points to magnet located on backside of cutter lever

Cutter Lever backside
Cutter Lever backside596×657 84.9 KB

In last picture, the actual cutter blade has arrows pointed at it. This fault is indicating this blade is stuck pushed in. The magnet activates/deactivates switch upper arrow is pointing to.

Cutter Assembly
Cutter Assembly618×716 48.4 KB

5

I really appreciate the time you took to point me in the right direction and put that post together, many thanks.

The magnet is definitely in place, and the lever seems to operate as you would expect.

image
image566×1133 68.3 KB

Pretty sure the cables are conencted properly?

image
image894×1190 78 KB

I am waiting for a replacement sensor cable, that looks a mission to fit!

Is there anything else I can try in the meantime?

I have the hex drivers ready.

Thanks Again.

6

See if this helps.
The video shows how the lever and cutter work together.
Make sure the cutter blade is attached to the lever as shown in video. It should slide back and forth easily. Do not completely remove the screw that holds the lever. Just back it out several turns and the lever should be free to drop and blade should come completely out of the filament path.

Replace the Filament Cutter Replacement - X1 & P1 Series

7

I appreciate all your help and advice, much appreciated.

A new extruder filament sensor arrived this morning, fitted that, problem solved.

Thanks again.