CHAPTER 5: MAINTENANCE
LW500A/LW600A PULSED Nd:YAG LASER
5-20 990-539
Power Detector Adjustment
The power detector is used to measure the output power/energy of the laser. The measured power/energy
is displayed on the Laser Controller each time the laser is fired. This laser is equipped with a real-time
power feedback system. The power detector is used as the primary feedback device for output control.
The procedure below describes how to adjust the power detector. This procedure should be performed
every six months for application critical processes, or once a year for normal use.
WARNING: Only authorized personnel should perform the following procedure. Nd:YAG safety
goggles with a minimum optical density of 7+ at 1064nm wavelength must be worn at all times during
this procedure. Do not attempt this procedure without knowledge of Laser alignment.
Required Items:
Phillips screwdriver
Potentiometer adjustment tool
DMM (digital multi-meter)
Beam Expander
External IR Power Detector + Meter
Nd:YAG safety glasses.
1. Remove the Head and Branch
Unit covers and disable all
Interlock Switches.
2. Locate the ME-1906 Power
Detector PCB and remove the
plastic cover (4 screws) that
protects the ME-1906 PCB.
3. Connect a DMM on the ME-
1906 PCB; (+) to TP6 (SIG) and
(-) to TP1 (GND).
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