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Maintenance and Repair
Exchanging the Optical Unit
Exchanging the Optical Unit
The optical unit (part number G1103-69002) includes spectrograph, optics
bench, shutter and lamp housing and it is exchanged as one item.
Removing the Optical Unit
1 Turn off the spectrophotometer and disconnect the power cord. Take the
plastic and sheet metal rear and front covers off, see “Removing and Replacing
Covers” on page 109.
2 Remove any accessory board or MIO board that may be plugged in from the
rear side of the instrument.
3 Remove the upper rear and upper front foam blocks.
4 Remove the Deuterium and Tungsten lamps, see “Exchanging the Deuterium
or Tungsten Lamp” on page 96.
5 Disconnect the shutter cable from the SPM board and the flat ribbon cable
from the spectrograph.
Figure 38 Removing the Optical Unit
6 Remove the three hexagonal screws that hold the optical unit on the chassis
of the instrument. Take the screws out to be able to lift up the optical unit.
7 Lift the optical unit out of the instrument and place it on the bench.
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