maintenance/
troubleshooting
49
Synrad Firestar f-Series operator’s manual
Troubleshooting
Status LEDs
Firestar f-Series LED indicators, also mirrored as output signals on the User I/O connector, provide status
information to the user. Table 4-2 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 4-2 Status signals
LED Indicator LED Status Output Signal Name User I/O Signal Status
Normal Fault Normal Fault
Remote Interlock Green – – Interlock Open Open – –
– – Red – – Closed
Temp Green – – Over Temperature Open – –
– – Red – – Closed
Ready Yellow – – Laser Ready Closed – –
– – O – – Open
Shutter Blue – – Shutter Open Closed – –
– – O – – Open
Lase Red – – Laser Active Closed – –
– – O – – Open
On f-Series keyswitch lasers, the Ready indicator illuminates yellow only when Remote Interlock and Temp
indicators are green, and the Keyswitch is cycled from OFF/RESET to the ON position. After the Ready
indicator illuminates, a ve-second delay occurs before Firestar is permitted to lase. The Shutter LED
illuminates blue when a Shutter Open Request signal is applied and the manual Shutter Switch (f100/
f200 only) is set to Open. If the Ready indicator is lit and the shutter is switched from Closed to Open, or
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.
On OEM lasers, the Ready lamp illuminates on DC power-up when Remote Interlock and Temp indica-
tors illuminate green. After the Ready indicator illuminates, a ve-second delay occurs before Firestar is
permitted to lase. The Shutter LED illuminates blue when a Shutter Open Request signal is applied and
the manual Shutter Switch (f100/f200 only) is set to Open. If the Ready indicator is lit and the shutter is
switched from Closed to Open, or a Shutter Open Request signal is applied, there is a ve-second delay
until PWM inputs are recognized. When PWM Command signal pulses are applied (and are long enough
to produce laser output) the Lase LED illuminates red.
Note: Firestar Ready and Shutter indicators (as well as Laser Ready and Shutter Open outputs) denote
separate control functions. Although the Ready lamp may light while the Shutter LED is O
(Shutter Switch Closed or Shutter Open Request signal missing), no power is applied to the RF
boards until both Ready and Shutter indicators are illuminated.
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