GE M
EDICAL
S
YSTEMS
D
IRECTION
2392751-100, R
EVISION
3
V
IVID
™ 4 S
ERVICE
M
ANUAL
Chapter 7 - Diagnostics/Troubleshooting
7-41
7-3-8-6
Pencil Probe Test
If a solid black line is observed during scanning, it may indicate a bad transmitting channel. The pencil
probe test checks the transmitting channels associated relays to the pencil probe port. This test is not
for sensitive receiving channels.The test has two phases, namely the
open
pencil probe test and the
close
pencil probe test.
1) Connect a 2D pencil probe.
2) Access the
F.B.
tab of the
FE Diagnostics
dialog box, as described in the
3) Trackball to
Pulser 1
(High Voltage Power Supply [HVPS] ±80V) or
Pulser 2
(Low Voltage Power
Supply [LVPS] ±40V) and press
Select
.
4) Trackball to the
Pencil Probe Test
button and press
Select
. The pencil probe test is performed,
and the test results are displayed in the
Report
dialog box, as shown below:
Figure 7-22 Report Dialog Box - Pencil Probe Test (Open)
