If the entire machine is not powered on, follow the troubleshooting procedure ‘Machine not powered on >>’.

If any other component is powered on, but the laser power LCD is not, follow the steps below for troubleshooting:

1. Open the control box cover and check that the laser power supply indicator is lit.

• If not, measure the input voltage of it (as shown).
• Voltage is normally 110V AC.

• • If the multimeter reads 0, the key switch may be faulty.
    If the multimeter reads 110, the laser power supply is faulty.

         2. If the laser power supply lights up but the LCD does not, replace the LCD with a new one.