From the forums ’ X1 Carbon Heated Bed Replacement’ there appears to be design and assembly issues with the heated bed thermistor/load cell ribbon cable breaking
a) the passing of the bed cable through rear Z axis mount is very difficult
b) the holes in the Z axis mount are too small
c) there is no bevel on the holes, or strain relief to protect the cables
d) the cable must be bent to go through Z axis mount
e) it is necessary to remove 14 side panel screws to access the ground/earth terminal
Recommendations:
a) enlarge the Z axis mount holes and/or put a ‘cut out’ into Z axis mount
b) provide a better bed cable path with strain relief
c) move the ground/earth connector to the back of the machine, to avoid the necessity of removing the side cover
d) provide the bed ribbon cable as a spare part
Can Bambu Lab provide the part number and ability to order spare thermistor/load cell ribbon cables