download/files/LCQ Deca_Duo Hardware Troubleshooting_8601.pdf

Front Panel LEDs
Front Panel LEDs
Definition of Classic/Deca
�Power: Indication of the digital power
– Should be green unless the power to the LCQ is off or there has been a failure.
�Vacuum: Indicates that the vacuum is OK.
– (Convectron gauge, ion gauge, and external switch are all in the correct state.)
– Should be green. If any one of the inter-locks is not logically correct, the LED will be off.
�Communication: Indicates communication between the on-board AT CPU and the NT
computer.
– Will be green if the two computers are communicating.
– Will be yellow if the on-board AT is active but not communicating with the NT computer.
– Will be off if the LCQ is off or if a failure has occurred.
�System: Indicates the status of the LCQ.
– Will be green if the LCQ is in the On mode. High voltage is applied.
– Will be yellow if the LCQ is in the standby mode. High voltages are off.
– Will be off if the LCQ is in the Off mode. Most of the power supplies are off.
�Scan: Indicates that the LCQ is in the On mode and Scanning.
– Will be blue and flashing when the LCQ is collecting data.
– Will be off if the LCQ is either in the On or Standby mode. Also will be off if the LCQ is
off.