If you can hear the sound of the motor but Xhorse dolphin xp007 key cutting machine not working properly after turning on the power, you may need to disassemble the plastic case to check if the belt is broken and replace it if necessary.
Check the original box the machine came in. There is a spare replacement.
How to disassemble the dolphin xp007 plastic case?
How to disassemble the dolphin xp-007 motor bracket?
There are 2 ways to disassemble Xhorse Dolphin XP007 shell,
How to Replace the xhorse dolphin xp-007 belt?