Bio-Rad Model 680 Microplate Reader Accessories - Manual (Page 46)

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Section 5. Instrument service by the user
Caution: Electrical shock hazardous! Always disconnect the instrument from the AC
power source before opening the service compartment.
Caution: The lamp and the lamp cover may be very HOT ! Use caution and allow the lamp
to cool before attempting service.
5.1 Installing Interference Filters
1. With the power off, open the rear cover of the instrument by pressing
the release latch located on the top left portion of the cover.
2. The filter wheel is located on the left side of the instrument. Note that
the filter wheel has eight filter positions.
3. Rotate the filter wheel to the desired filter. Grasp the top of filter
frame and pull up to remove the filter.
4. Insert the new filter into the desired filter position.
5. Ensure that the new filter is added to the filter list as follows: Main
menu->Edit->Filters.
5.2 Changing the Lamp
1. With the power off, open the rear cover of the instrument by pressing
the release latch located on the top left portion of the cover.
2. Remove the two screws on the black plastic cover and carefully
remove the plastic cover.
3. Remove the screw on the metal cover. Lift the cover up and away
from the instrument. This will allow the lamp to be pulled free from the
lamp housing.
4. Holding the ceramic base in one hand and the lamp housing in the
other, carefully pull the lamp free of the base.
5. Carefully insert the new lamp firmly in the ceramic base. Apply even
pressure when inserting the lamp so that the bulb dose not become
misaligned in the reflector housing. Be extremely careful not to touch
the front glass of the lamp during installation.
6. Position the new lamp into the housing so that the plastic guides hold
the flange of the lamp.
7. Carefully place the metal cover over the lamp. Tighten the screw.
8. Replace the plastic cover and tighten the screws.
9. Close the rear cover.