GE M
EDICAL
S
YSTEMS
D
IRECTION
2392751-100, R
EVISION
3
V
IVID
™ 4 S
ERVICE
M
ANUAL
Chapter 7 - Diagnostics/Troubleshooting
7-39
7-3-8-5
TR Switch Test
If a solid line is observed during scanning, it may indicate a bad TR switch. This test checks the transmit
switches.
1) Connect a 3S probe and lock it in place.
Note:
To avoid irrelevant failure results, it is imperative that the probe be in good condition.
2) Access the
F.B.
tab of the
FE Diagnostics
dialog box, as described in the
3) In the
Select Socket
area of the
F.B.
tab, trackball to the socket to which the 3S probe is connected:
•
Trackball to
Left
,
Right
or
Center
and press
Select
.
4) Trackball to
Pulser 1
(High Voltage Power Supply [HVPS] +/-80V) or
Pulser 2
(Low Voltage Power
Supply [LVPS] +/-40V) and press
Select
.
5) Trackball to the
TR Switch Test
button and press
Select
. The TR switch test is performed, and the
test results are displayed in the
Report
dialog box, as shown below:
Figure 7-21 Report Dialog Box - TR Switch Test
