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Teledyne API Model 401 O
3
Photometric Calibrator Instruction Manual, 01124, Rev. J2
9-17
WARNING
Hazardous voltage present - use caution.
1. Unplug the cable connector at J1 on the Lamp Power Supply and confirm that +24VDC is
present between Pins 1 and 2 on the cable connector. If this voltage is incorrect, check the
Power Supply Module as described in Section 9.6.4.
2. Remove the cover of the Lamp Power Supply and check for the presence of the following
voltages:
+15VDC between TP14 and TP2
+20VDC +/-2VDC between TP14 and TP7
If these voltages are incorrect, the Lamp Power Supply is faulty and should be replaced.
If the above checks are successful, it is more likely that a problem is due to the UV Lamp than
due to the Lamp Power Supply. Replace the Lamp and if the problem persists, replace the Lamp
Power Supply.