maintenance/
troubleshooting
73
SYNRAD OEM v30 Operator’s Manual Version 2
Troubleshooting
Under Voltage fault
An under voltage fault occurs when DC input voltage is at or below 20 VDC. This fault is indicated by
the PWR indicator ashing 1 blink at 1/2 second intervals. To reset an under voltage fault, ensure that 30
VDC is applied to the laser under full-load conditions and then cycle DC power. When PWR and RDY
indicators illuminate, lasing is enabled.
Under voltage faults are typically caused by the DC power supply being unable to properly regulate output
voltage under full-load or high inrush current conditions. Improper regulation may be caused by an under-
sized DC supply or insucient AC line voltage to the supply.
Over Voltage fault
An over voltage fault occurs when DC input voltage is at or above 33 VDC. This fault is indicated by the
PWR indicator ashing 2 blinks at 1/2 second intervals. To reset an over voltage fault, ensure that 30 VDC
is applied to the laser under full-load conditions and then cycle DC power. When PWR and RDY indica-
tors illuminate, lasing is enabled.
DC Sense fault
An DC Sense fault is indicated by the PWR indicator ashing 3 blinks at 1/2 second intervals. If this fault
occurs, the laser requires service—contact SYNRAD or a SYNRAD Authorized Distributor.
PWM Sense/Control Board fault
A PWM Sense or control board fault is indicated by both RDY and PWR indicators ashing continuously.
If this fault occurs, the laser requires service—contact SYNRAD or a SYNRAD Authorized Distributor.
Laser troubleshooting
During normal operation or when laser faults occur, OEM v30 status LEDs and output signals annunciate
laser status as previously described in Tables 5-2–5-13. This section provides more detailed information
for troubleshooting and resolving a variety of laser faults. Each Symptom listed in this section describes
a particular fault. For each Symptom, specic causes and solutions are described under Possible Causes.
Symptom:
■ The following status LED and I/O states exist:
LASE LED – O Lase Indicator – Low (0V)
RDY LED – O Laser Ready – Low (0V) Laser OK – Low (0V)
PWR LED – Green
Overtemp Fault – Low (0V) Temperature OK – High (+5V)
DC Voltage Fault – Low (0V) Voltage OK – High (+5V)
Possible Causes:
■ The Laser Enable input is not active.
A +5 VDC Laser Enable signal must be applied between Pin 9, Laser Enable, and Pin 8, GND, on the
DB-9 connector (or Pin 7, Laser Enable, and Pin 8, GND, on the RJ45 connector) to enable lasing.
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