Overview
DSX™ System Service Manual 14-1
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Chapter 14 The Ambient Drawer
14.1 Overview
The ambient drawer is designed to hold plates and is used to allow plates to incubate for the
appropriate period of time at room temperature (i.e. for reactions that can be readily
performed at room temperature. The drawer is located directly below the modules; when the
drawer is extended, it extends over the workspace.
From time to time, the system will extend the plate (under control of the assay) so that plates
can be placed in the drawer or removed from the drawer. As an alternative, the service
engineer can move the drawer independently of an assay using the manual mode as described
in the section entitled Manual Control Operations on page 5-2.
The Drawer module is a simple DSX module, as it has only one main sub-system: the drawer
motor assembly. This drawer can accommodate up to four plates on its moving plate. This
plate slides in and out of the DSX front face and has four pre-defined positions, as follows:
Home – The plate is fully inside the DSX structure.
Mid – The plate is half out, exposing only the front left and right plate-positions.
Out – The plate is fully out, exposing all four plates. All plate holders are locked.
Eject – The plate is in its fully extended position. This is the position necessary to
unlock all of the plate-holding mechanisms to allow for one or more of the plates to be
loaded onto or unloaded from the plate.
In most instances, the service engineer is expected to replace the ambient drawer as a discrete
module and replace it with a new module. The defective module is to be returned to the
nearest DYNEX Technologies service center. A detailed discussion on troubleshooting and
service of the ambient drawer is presented in Chapter 15.
14.2 General Electronics Design
The ambient drawer electronics control the drawer motor assembly, with feedback from the
optical sensors for position control and the thermal sensor that monitors the temperature of the
chamber.
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