Quantel Ultra Big Sky Laser Series User Manual page 94

90 | Contents | Troubleshooting
Problem Possible Cause
Q-Switch is not enabled.
Q-Switching:
External Q-Switch
External trigger signal
Trigger input does not
does not meet the
cause Q-Switch to fire.
specified requirements.
Frequency setting You have purchased a
only adjusts within a GRM Laser Head
±10% range
Faulty laser I/O cable
No Simmer
No Interlocks
ICE450 does not Incorrect signal generator
trigger in External settings
mode
Poor signal output Incorrect termination
from Sync BNCs
(Lamp out & Q-Sw
out)
DI Cartridge installation
Coolant leak
Laser Head o-rings
ICE450 does not Incorrect side is down
operate in horizontal
position.
NOTE: Contact Quantel USA for any repair actions necessary beyond those described in this manual. Attempts to
adjust, repair or replace any portion of the laser system may damage the system and void the warranty
Version M 22-April-2012
Solution/Suggestion
Verify that both the "Q-Switch start" LED and the "flashlamp start" LED indicators on the Remote
Box are illuminated.
The signal generator may not be set up to drive the ICE450 50Ω input. Refer to the
Trigger Signal Requirements on page
For GRM Laser Heads, the frequency is set at the factory. It can only be adjusted to ± 10% of the
set value. See your system's Data Summary Sheet
• Verify laser I/O cable connectors are fully inserted and the screws securing them are
tightened.
• Visually inspect the high-current contacts on both ends of the laser I/O cable for carbon film
or pits caused by poor connector insertion and arcing.
Refer to the External Trigger Signal Requirements on page
Output signals must be 50Ω terminated for optimal pulse shape and faster edges.
Verify that the DI cartridge is correctly in place and its fittings are fully inserted.
Inspect o-rings on coolant line connectors at Laser Head for damage and replace if necessary
Verify that the ICE450 is oriented with the coolant fill port lower than the vent port.
Verify that the coolant level is OK and fill if necessary.
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