62Appendix B LEDsPanel LEDsFront panel LEDsTable 25 Description of front panel LEDsLED Status MeaningOff The power module is not supplying power to thesystem.PWR (green)On The power module is supplying power to the systemproperly.Off No RPS DC power input.Solid green Both AC power input and RPS DC input are normal.RPS (yellow/green)Solid yellow AC power input is abnormal, and RPS DC input isnormal.Off No interface module is in slot 1 or the interfacemodule is faulty.SLOT1 (green)On An interface module is in slot 1 and operatesproperly.Off No interface module is in slot 2 or the interfacemodule is faulty.SLOT2 (green)On An interface module is in slot 2 and operatesproperly.Off The system is powered off or the board is faulty.Slow blinking (1 Hz) The board operates properly as configured.SYS (green)Fast blinking (8 Hz) Software is being loaded or the board does not startworking yet.Off No CF card is in position or the CF card cannot beidentified.On A CF card is in position and the host has detectedthe CF card. You can remove the card in this state.CF (green)Blinking The system is accessing the CF card. Do not removethe card in this state.Off No host is connected to the USB port.On A host is connected to the USB port. You can unplugthe USB cable in this state.USB1 (green)Blinking Data is being transmitted or received. Do not unplugthe USB cable in this state.
