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Home > Ordnance Documents and other related manuals > > Performing the STE Self-Test - Od16090117
Figure 21. The Diagnostic Panel
VTM Confidence Tests.

M2/M3 Bradley Fighting Vehicle: Turret
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M2/M3 BRADLEY FIGHTING VEHICLE: TURRET - OD1609 LESSON 3/TASK 1
Step 4.
Remove the SETCOM from VTM jack J2 (refer to figure 19 on page 107).
Step 5.
Remove the test equipment from the vehicle and stow the various STE
components in their transit cases.
5.
Performing the STE Self-Test
a.
General.
The STE-M1/FVS has a built-in self-testing capability, used to
determine that the test set is ready for use.
The self-test is also used to
identify  fault  symptoms  within  the  test  set,  and  to  confirm  that  maintenance
actions have corrected any previous problem in the test set.  The self-test should
always be performed before using the test set on the vehicle.
The STE self-test consists of making various entries into the VTM or SETCOM unit
and receiving appropriate responses on the displays of those two units.  If at any
time  during  the  self-test  the  proper  response  is  NOT  displayed  by  the  test
equipment, the test set, or a component of the test set, is faulty.
b.
Powering Up the Test Set.  Once the STE has been properly hooked up to the
vehicle, the power must be turned on, as follows:
Step 1.
Set the power (PWR) switch on the CIB to the ON position.
Step 2.
Push the circuit breaker on the VTM to ON.
Step 3.
The display on the VTM should show .8.8.8.8 for about two seconds and
then change to four dashes (----).  If this sequence is NOT displayed, the STE test
set is faulty, and the following actions should be taken:
(1)
If  nothing  appears  on  the  display,  check  all  cable  connectors  for
tightness; then, if nothing appears on the display, troubleshoot the STE test set
for the symptom NO VTM DISPLAY ON POWER UP, in accordance with TM 9-4910-751-14-1,
chapter 5.
(2)
If any one dot, number eight, or dash does not appear on the display,
replace the faulty display module in accordance with TM 9-4910-751-14-1, chapter 5.
110






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