Service manual

GE MEDICAL SYSTEMS
D
IRECTION 2300749-100, REVISION 2LOGIQ
TM
3 SERVICE MANUAL
Chapter 5 5-9
5-2-6 Patient I/O (Option)
The optional Patient I/O is mounted at the front of the scanner with its connector panel.
Available inputs:
•PCG
•ECG
•AUX1
•AUX2
• Top Console
The Top Console includes a Stand By/On switch, a keyboard, different controls for manipulating the
picture quality, controls for use in Measure & Analyze (M&A), and loudspeakers for stereo sound output
(used during Doppler scanning, inside the Keyboard assy).
5-2-7 Keyboard
Keyboard assy provide all of operator interface for scan.Keyboard assy consist of several pieces of
main function assembly.
• USB HUB Assy: The USB HUB assy has USB interface for upstream USB port which comes from
BEP. USB HUB assy also has alpha numeric key interface, control functions and USB hub. So the
USB trackball, the USB of main assy and additional 2 USB ports of the rear panel are connected to
the USB HUB.
• MAIN Assy: The Main assy has a USB micom to interface between the main assy and USB hub
assy. All function keys’ and encoders’ interface and controls are done by an additional control on
the micom chip.
Figure 5-7 Keyboard Block Diagram