GE LOGIQ 5 PRO, Service Manual

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GE M
EDICAL
S
YSTEMS
D
IRECTION
2380207, R
EVISION
7 LOGIQ™5 PRO S
ERVICE
M
ANUAL
Chapter 5 Components and Functions (Theory) 5-7
5-4-1-1 Interface to Probe
• Probe Status detection
- Detects whether or not a probe is connected.(POPEN)
- Detects ID code of a connected probe.(PCODE)
• Mux Interface
- Transfers control data of Mux to a probe.(CONSYS,CONSTA)
- Enables/Disables control of data.
- Detects whether Mux data setting is finished or not.
• Power Supply for Mux
- Supply/Cut control:
+5V and +15V on a connector are supplied while a probe is connected to the connector.
+/-SHV are supplied only while a probe is selected.
• Surface temperature
- Detects resistance of a thermistor in a probe head as voltage when the probe is
selected.(PTEMP) This signal is connected to FEC.
• LED Blinking
- The LED in a probe blinks when the probe is selected.
5-4-1-2 IIC bus
- Connects signals of IIC bus with a relay when IIC bus access is required.
- Selects one of three probes that IIC access with 3-to-1 switch.
5-4-2 LMT
The main function of LMT ASSY is as follows.
- 64ch transmit/receiving switches protect a Pre-amp from a high voltage transmit pulse
- All control signal and DC power for RLY pass through this LMT Assy
Figure 5-6 LMT Block Diagram
USB from BEP
USB#1, #2 From
Rear Panel
A/N Key Assy
USB
Track Ball
USB I/F
USB I/F
RS232
USB I/F
USB I/F
Down #2
Down #1
Down #4
Down #4
A/N Matrix
Interface
USB HUB
Function Key Arrys
Encoders
TGC SLide POT
LEDs for Key
backlight
Foot Switch I/F
USB
MICOM
With HUB
USB
MICOM
RAM
VGA Display from BEP
LCD Assy
AD
Board
Inverter
6.4"
TFT LCD
Touch
Sensor
Keyboard
Control
MICOM
Touch Screen
Interface