# Head Unit- Before replacement

Caution / 注意

The sequence ends with error if the consumables run out during the sequence. Make sure to start over if the sequence stopped in the process.

1. Start service support mode.
   
2. Select [05 Adjustment for Replacement Parts].
   
3. Select [Main Unit] tab.
4. Select [5010101 Head Unit].
5. Select [Before Parts Replacement].
   
6. Press [Execution].
   
7. Turn Off the main unit when the following screen is displayed.
   
   After replacement menu will start automatically at next startup.