1. Remove the rear cover and left cover.
2. Remove 4 main driving motor supporting screws [A]
3. Remove the cable [B] on main driving motor.
4. Remove the main driving motor.
1. Remove system card and internal shield and front cover link.
2. Remove the rear cover and left cover.
3. Remove the main board.
4. Remove the main driving motor.
5. Unlock the hook [A] on MPT driving gear spindle and remove gears
When removing the gear fix hook, be careful not to damage or alternate it.