Thermo Scientific GENESYS 20 Service Manual page 44

Optical Alignment
THE FILTER WHEEL ALIGNMENT PROCEDURE REQUIRES THE
OPERATOR TO HAVE POWER TURNED ON WHILE ACCESSING
THE INTERIOR OF THE CABINET. THEREFORE, IT IS VERY
IMPORTANT THAT ONLY TRAINED TECHNICIANS, AWARE OF
THE DANGERS AND PROPER SAFETY PRECAUTIONS, PERFORM
THIS ALIGNMENT PROCEDURE. ALWAYS EXERCISE EXTREME
CARE AND BE AWARE THAT LIVE POWER EXISTS AT VARIOUS
POINTS ON THE INTERNAL COMPONENTS. CERTAIN PARTS ON
THE POWER SUPPLY AND MAIN CIRCUIT BOARD SUCH AS THE
LAMP CIRCUIT BREAKER HEAT SINK ARE ALSO HOT WHEN THE
INSTRUMENT IS OPERATING.
WARNING MAY RESULT IN SERIOUS BURNS, INTERRUPTION OF
HEART RHYTHM, DISRUPTION OF THE NERVOUS SYSTEM, OR
DEATH.
7. Insert the power cord and turn on power to the assembly.
8. Turn the filter wheel so the light passes through a blank position.
9. Look straight down into the sample cuvette and observe the position of
the visible red dot relative to the vertical center line. Move the filter
and lens assembly until the red dot is centered on the line.
10. When the filter and lens assembly is properly aligned, tighten the
mounting screw.
11. Double check the alignment after the screw is tightened to make sure it
is still proper.
12. Turn off power to the instrument and remove the power cord.
13. Remove the alignment tool.
14. Reassemble the instrument (refer to "Section 9 - Disassembly and
Replacement").
7 - 4
WARNING
FAILURE TO OBSERVE THIS