maintenance/
troubleshooting
101
SYNRAD OEM v40 Operator’s Manual Version 4
Troubleshooting
Symptom:
■ Your OEM laser has quit lasing or lasing halted and then restarted. The LASE LED may be O or On
depending on whether PWM Command signals are being applied, but no fault is indicated.
INT LED – Green Interlock Open – Open
TMP LED – Green Over Temperature – Open
RDY LED – Yellow Laser Ready – Closed
SHT LED – Blue Shutter Open – Closed
LASE LED – O or On Laser Active – Open or Closed
Possible Causes:
■ An over temperature condition has occurred.
On earlier OEM lasers (v40 versions B and C ), over temperature faults are not latched. This means if an
over temperature condition occurs, the TMP indicator will turn red, the Over Temperature output will
Close, the RDY light goes out, and lasing is disabled. However if the laser cools down enough to clear the
over temp fault, the TMP indicator will change from red to green, the RDY light illuminates, and ve
seconds later lasing is enabled.
■ The remote interlock circuit momentarily opened.
Remote interlock faults are not latched on OEM lasers. This means if an interlock open fault occurs, the
INT indicator will turn red, the Interlock Open output will Close, the RDY light goes out, and lasing is
disabled. However, if the interlock circuit closes again, the INT indicator will change from red to green,
the Interlock Open output will Open, the RDY light illuminates, and ve seconds later lasing is enabled.
Symptom:
■ There is no output laser beam; all LED status indicators are O.
Possible Causes:
■ No DC voltage is applied or the laser’s in-line fuse has blown.
Ensure that DC power cable connections are tight and verify that +30 VDC is available on the power sup-
ply terminals under full-load.
Check the in-line fuse on the laser’s red DC power cable. Install a Bussman KLK25 or equivalent 25-am-
pere fast-acting replacement fuse.
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