maintenance/
troubleshooting
94
SYNRAD OEM v40 Operator’s Manual Version 4
Troubleshooting
Status LEDs
Firestar v40 LED indicators, also mirrored as output signals on the User I/O connector, provide status in-
formation to the user. Table below shows Firestar output signal and LED indicator states during normal
and fault conditions. User I/O outputs are Closed when the state indicated by the signal name is True.
Table 5-2 Status signals
LED Indicator LED Status Signal Name User I/O Output Status
Normal Fault Normal Fault
INT Green Red Interlock Open Open Closed
TMP Green Red Over Temperature Open Closed
RDY Yellow O Laser Ready Closed Open
SHT Blue O Shutter Open Closed Open
LASE Red O Laser Active Closed Open
On v40 Keyswitch lasers, the RDY indicator illuminates yellow only when INT and TMP indicators are
green and the Keyswitch is cycled from OFF to the ON position. After the RDY indicator illuminates, a
ve-second delay occurs before Firestar is permitted to lase. The SHT LED illuminates blue when a Shut-
ter Open Request signal is applied and the manual Shutter Switch is set to ON. If the RDY indicator is
lit and the shutter is switched from Closed to Open, there is a ve-second delay until PWM inputs are
recognized. When PWM Command pulses are applied (and are long enough to produce laser output) the
LASE LED illuminates red.
On OEM lasers, the RDY lamp illuminates on DC power-up when INT and TMP indicators illuminate
green. After the RDY indicator illuminates, a ve-second delay occurs before Firestar is permitted to lase.
The SHT LED illuminates blue when a Shutter Open Request signal is applied. If the RDY indicator is
lit and then a Shutter Open Request signal is applied, there is a ve-second delay until PWM inputs are
recognized. When PWM Command pulses are applied (and are long enough to produce laser output) the
LASE LED illuminates red.
Note: Firestar RDY and SHT indicators (as well as Laser Ready and Shutter Open outputs) denote
separate control functions. Although the RDY lamp may light while the SHT LED is O (Shutter
Switch Closed or Shutter Open Request signal missing), no power is applied to the RF boards
until both RDY and SHT indicators are illuminated.
Following tables show how Firestar’s signal status changes when remote interlock, over temperature, or
shutter closed conditions occur.
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