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16 LS 785 High Throughput Lens Spectrograph User Manual
Shutter Replacement
The following instructions apply if the LS 785 was shipped from the factory with an
installed external shutter. Because a shutter has a finite lifetime, it may become
necessary to replace a shutter.
Tools:
9/64” hex wrench
Procedure:
1. Remove any accessories attached to the entrance slit.
Using a 9/64” hex wrench, remove the four screws holding the X-Y Stage.
Using a 9/64” hex wrench, remove the four screws holding the manual slit. (see Figure 2-11)
Note: In addition to the four mounting screws, the manual slit assembly is located by two pins on the
shutter adapter that mate with holes on the back of the slit adapter.
2. Using small flat blade screwdriver, loosen the two screws on the side for the shutter adapter (see Figure 2-12)
until the collar slides on the shutter cable.
3. Slide the plate off.
4. Using a 9/64 hex wrench, remove the four shutter assembly mounting screws (Figure 2-12)
5. Remove the shutter and cable assembly.
6. Mount the new shutter assembly in the adapter. Slide in the plate and secure the collar to the plate.
Note: If it is necessary to operate without the shutter in place, the shutter may be removed as described
above, however, the housing in which the shutter was mounted must remain in place and the area where
the cable entered the housing must be covered and sealed with an opaque material. Removing and
replacing this housing will affect calibration.
7. Remount the manual slit and/or X-Y stage.
Figure 2-11. Manual Slit
Figure 2-12. Shutter Assembly