中国·厦门蒙发利科技集团有限公司
Xiamen Comfort Science &Technology GROUP Co., Ltd
C
：
Disconnect the connecter.
D
：
Take off the three nuts which fixing the limit sensor to the frame.
E
：
Get a new limit sensor and fix it to the frame then connect the connecter. Test whether the
up limit sensor works fine, And also we have to adjust limit sensor’s position make sure
the mechanism can not hit it.
8
：
Disassembly of the Main PCB .
A
：
Refer to Maintenance of backrest to take off the backrest.
B
：
Take off the 6pcs screws of the main PCB cover, then pull the PCB cover, then take it off.
The connecter of the up stroke limit
sensor has been taken off
Turn the rolling motor at here
The nuts have been taken off
Make sure this part can not hit the up
stroke limit sensor
