HMS 0700-2000-0002-0014: AMS Odometer No Signal
LayerWalker is a participant in the Amazon Services LLC Associates Program. We may earn a commission when you buy through links on our site, at no extra cost to you.
HMS 0700-2000-0002-0014 means the AMS A Slot 1 odometer is giving no signal, with poor odometer connector contact or odometer failure named as the causes. The odometer is what counts filament movement, so without it the AMS cannot tell a slow feed from a stopped one.
It is an optical and magnetic part sitting in a dusty filament path, which tells you what to try first.
Where to buy
Clean the contacts before condemning the part
Contact cleaner sprayed into the connector and allowed to flash off restores a joint that has oxidised, and it is a one-minute job. On a part that reports intermittently, it is also the likeliest fix.
Clean the sensing area without leaving fibres
Foam cleaning swabs reach into the recess and lift dust without shedding, which cotton buds do. A fibre left on an optical face is a new fault you have just installed.
Get the filament dust out of the housing
Every metre of filament sheds a little, and it collects exactly where the odometer wheel runs. An anti-static brush clears it and grounds the area while it works, so the dust leaves instead of moving twenty millimetres.
Then check the plug as you would any other
Same small connector, same failure mode as the sensors around it. Reseat, confirm the latch clicks, and route the lead so it is not under tension.
How HMS 0700-2000-0002-0014 sits beside the motor code
A silent motor in the same slot is HMS 0700-2000-0002-0013, and the identical wording about connector contact is not an accident: they share a path. If both appear, look at the loom.
The third member of the group
The feed-out sensor reports in the same style in HMS 0700-2000-0002-0007. Why the AMS tracks movement this closely is explained in multi-colour 3D printing, and the layout in the AMS hub guide.
HMS 0700-2000-0002-0014 FAQ
What does the odometer actually measure?
How far the filament has travelled, so the AMS can detect stalls.
Can I print without it?
That slot becomes unreliable for automatic loading. Use another.
Is dust really enough to stop it?
Dust on the sensing face is one of the two commonest causes.
Does it affect filament usage estimates?
It can. The count comes from this part.
A slot can also report that it has nothing to measure. HMS 0700-2000-0002-0002 means the slot is empty, which is correct if you emptied it and worth investigating if you did not.
LayerWalker
Print defect diagnosis, calibration procedures and parts that actually fit. Corrections welcome through the contact page.
