Terumo BCT Trima Accel, Service Manual

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Display System
The touch-screen display system shows system information relayed from the control computer and
serves as the user interface for the system.
1 Alarm lights
2 Display matrix
3 Touch-screen overlay
4 Stop button
5 Pause button
6 Trim tape
7 Display console arm
Figure 2-42: The display console
Table 2-11: Display system components
Component Function
1 Alarm lights
The four red alarm lights, located on the top corners of the display
console, indicate alarm status.
See Table 2-12.
2 Display matrix
The display matrix shows the current system information and status.
The screen is a 10.4-inch diagonal, active thin-film transistor (TFT)
liquid crystal display (LCD). The display is backlit by a single, field
replaceable, cold-cathode fluorescent tube (CCFT) assembly.
3 Touch-screen overlay
The touch-screen overlay is a thin film that covers the display screen.
Pressing the screen causes a change in resistance between two film
layers. The change in resistance is converted to X-Y coordinates
representing the touch location by a micro-controller on the display
CCA. These coordinates are conveyed to the control CCA, as if from a
mouse.
4 Stop button
The stop button stops the centrifuge and the pumps.
5 Pause button
The pause button pauses the pumps during normal operation.
System Description
2-58 Trima Accel
®
Automated Blood Collection System • Service Manual