maintenance/
troubleshooting
4
13
Synrad
Firestar ti-Series
operator’s manual
Troubleshooting
Once the
RDY
lamp is illuminated, lasing is possible after the five-second delay.
Note:
Water-cooled ti-Series lasers can be operated at coolant temperatures up to 30 °C to
reduce problems associated with condensation; however, this may result in decreased
laser performance and/or reduced laser lifetime.
Shutter fault
A closed shutter is not considered a fault condition. When a
Shutter Open Request
signal is
applied, lasing is enabled after a five-second delay provided that the
RDY
indicator is illumi-
nated yellow.
Under/over voltage fault
An under voltage or over voltage fault occurs when the DC input voltage is below or above
preset limits. This fault is indicated by the
RDY
indicator flashing 1 blink (under voltage) or
2 blinks (over voltage). To reset an under voltage or over voltage fault, ensure that 48 VDC
is applied to the laser under full-load conditions and then cycle DC power. When the
RDY
indicator illuminates, lasing is enabled after a five-second delay.
RF Drive DC fault
An RF Drive DC fault is indicated by the
RDY
indicator flashing 3 blinks. Reset the laser by
removing DC power to the laser, wait 30 seconds, and then reapply DC power. If the RF Drive
DC fault reappears, contact SYNRAD or a SYNRAD Authorized Distributor.
PWM Drive fault
A PWM Drive fault is indicated by the
RDY
indicator flashing 4 blinks. Reset the laser by
removing DC power to the laser, wait 30 seconds, and then reapply DC power. If the PWM
Drive fault reappears, contact SYNRAD or a SYNRAD Authorized Distributor.
Other laser faults
When a laser fault occurs, Firestar’s status LEDs and output signals will reflect a fault condition as indi-
cated in Tables 4-3–4-5 or Table 4-6. Each Symptom listed below describes a particular fault. For each
Symptom, specific causes and solutions are described under Possible Causes.
Warning
serious
personal
injury
On Firestar ti-Series OEM lasers, remote interlock (
INT
) faults are
not latched. Clearing the fault condition re-enables the
RDY
indica-
tor and the laser will fire after the five-second delay provided that the
SHT
indicator is lit and a PWM Command signal is applied. Because
exposure to 10.6 µm CO
2
laser radiation can inflict severe corneal
injuries and seriously burn human tissue, the OEM or System Integra-
tor must ensure that appropriate safeguards are in place to prevent
unintended lasing.
