Problem Description:The speed button & incline are reversed
Reason Analysis:
1) The button board cable is inserted reversely
2) The button board cable is loose
Solution:
1) Disassemble the back cover of the display, find the terminal where the key board is plugged into the display screen, unplug the terminal, reverse the sequence and reinsert it tightly.
2) Check whether the cable is loose, and insert the cable tightly.