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
5-6 Section 5-4 - Front End
5-4-1 RLY
RLY ASSY contains of 3 phased array probe connectors and provides switchable connection between
probes and 64ch transmitters/receivers.
NOTE: There is no numeric order in the probe port, system recognizes the first probe slotted on the
port as the probe #1, regardless of the probe port location.
This board also has interface for a single CWD probe connector.
The main function of RLY ASSY is as follows.
- 3-to-1 selectors for three probes.
- Interface with JUSC bus (control bus)
- Interface with FEC ASSY for IIC bus.
- Interface with DCWD Connector.
- Supply/Cut control and failure detection of supply voltage for Mux circuit in a Probe.
- Device: Mechanical Relay
- Switch: 128ch 3:1 selector
- Temperature sensor in this assy detects temperature of RLY assy.
Figure 5-5 RLY Block Diagram
Probe A
Probe C
DCWD
Probe I/F
RELAY
128
128
Probe B
128
128
RELAY
128
Probe ID
I/F
Control
Circuit
Control
FPGA
MUX
64
SHV
To LMT
Temperature
Sensor
JUSC I/F