maintenance/
troubleshooting
96
SYNRAD OEM v40 Operator’s Manual Version 4
Troubleshooting
Laser faults
Firestar v40 lasers version D and above (KFD, SAD, etc.) have the ability to indicate four specic fault
conditions. In the event of a certain faults, the RDY LED on the laser will blink an error code, pause four
seconds, and then repeat the error code. This sequence continues until the fault is corrected and the laser
is reset by cycling DC power to the laser.
Table below lists error codes, the corresponding fault condition, and describes any corrective action
possible in the eld.
Table 5-6 Laser faults
Number of Blinks Fault Condition Corrective Action in Field
Ready (RDY) Indicator
1 blink Under Voltage Fault Verify 30 VDC is measured at the laser
under load
2 blinks Over Voltage Fault Verify 30 VDC is measured at the laser
under load
3 blinks RF Drive DC Fault Remove DC power to the laser, wait 30
seconds, and then reapply DC power
4 blinks PWM Drive Fault Remove DC power to the laser, wait 30
seconds, and then reapply DC power
Resetting faults
Keyswitch lasers
Remote interlock fault
A remote interlock fault occurs when the Remote Interlock input opens (the INT indicator
changes from green to red). To reset a remote interlock fault, close the interlock input (INT
indicator changes from red to green) and cycle the Keyswitch from OFF to ON (or apply a
±5–24 VDC Remote Reset/Start Request pulse with the Keyswitch set to ON). When the
RDY indicator illuminates, lasing is enabled after a ve-second delay.
Over temperature fault
Over temperature faults occur when thermal limits in the laser are exceeded (the TMP indica-
tor changes from green to red). To reset an over temperature fault, lower coolant temperature
below 22 °C (water-cooled) or below 40 °C (air-cooled), cycle DC power to the laser, and then
cycle the Keyswitch from OFF to ON (or apply a ±5–24 VDC Remote Reset/Start Request
pulse with the Keyswitch set to ON). When the RDY indicator illuminates, lasing is enabled
after a ve-second delay.
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