Teledyne 514 Instruction Manual page 50

5.0 Maintenance & Troubleshooting
connections should now be installed from the control unit TS2: -7 (plus), 6
(common) (see dwg. C-15245).
Power Check
1. Plug in the +15 volt power supply PC card (see dwg. B-14708)
but leave all other PC boards out.
2. Turn power ON.
3. With a digital multimeter (DMM), check for +15 volts on the +15
volt power supply.
4. Check for proper starting of the chopper motor and source lamp.
WARNING: The light intensity from the quartz iodine lamp is intense and
should not be looked at directly without special protective
eyewear. Protective goggles with shaded lenses (Fed. Spec. #5)
should be worn if it is necessary to look directly at the source.
Optical Alignment
This procedure is identical to the "Optical Alignment" section in Chap-
ter 2. The object of optical alignment is to bring the optimum source energy
to the detector. Generally the optimum energy will be the maximum amount
of energy which can be focused on to the detector. This can be done by
adjusting the various elements in the source module (see dwg. C-14628). See
warning above.
Use a Variac on the input AC line to reduce the voltage and the lamp
intensity to a tolerable level.
1. Vertical lamp position is achieved by loosening the screws of the
base lamp bracket and moving the assembly up or down.
2. Horizontal position is achieved by loosening the Allen screw at
the base of the lamp holder which allows side to side movement
of the lamp.
3. Beam focusing is then achieved by loosening the lens holding
bracket and moving the lens back and forth until the best
focusing is obtained.
4. First visually optimize the lamp energy using a white piece of
paper at various locations in the light path. Make adjustments as
in Steps 1, 2, and 3 above.
5. Electronically optimize the energy as follows (the pre-amp must
be installed in the detector compartment):
5–12
Teledyne Analytical Instruments
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