Bio-Rad Gel Doc™ EZ System - Manual (Page 28)

Criterion Stain Free TM System | Criterion Stain Free Imager
14
4. On the left side of the instrument there is a single screw holding the
lamp assembly in place. Remove and save this screw.
5. Carefully slide out the lamp assembly. Although only one lamp bulb may
be out, it is recommended that all lamps be replaced to ensure even
illumination and reduce the need to access the lamps again.
6. Replace all lamps with UV-B fluorescent lamps (Bio-Rad PN 900-0217).
Make sure each lamp is properly seated in its holder.
7. After replacing all the lamps, carefully slide the lamp assembly back into
the instrument. Press on the side of the lamp assembly to the right of
the screw hold down tab, to make sure it is fully seated into the
instrument. If the lamp assembly is not fully seated, you may get the
following error message: “Light tray not detected”
Other error messages you may see are explained below:
“Sample tray not detected”
The sample tray has a magnet that senses when the sample tray is inserted. If
you attempt to image and receive this message, the sample tray may not be
pushed in all the way. Press the tray in until you feel the magnet pull the
sample tray.
“Light tray not detected”
This error message will appear if the lamp assembly is not fully seated into the
imager. You will need to replace the lamp assembly as described above.
“Door was opened during imaging”
To prevent UV radiation exposure, the UV-B lamps will not turn on unless the
front sample tray door is fully closed. This message will also appear if the
instrument cover has been removed.