M2/M3 BFV: FIRE CONTROL SYSTEM - OD1608 - LESSON 2/TASK 1
(2) VTM Confidence Test 99.
To
perform
the
second
VTM
confidence test, follow these steps:
(a) Set the TEST SELECT switches on the VTM to 99.
(b) Press the TEST button on the VTM.
(c) The VTM display should flash some numbers and then show
PASS. If the display does not show PASS, troubleshoot the test set
for the symptom VTM DISPLAYS AN ERROR CODE, in accordance with TM 9-
4910-751-14-1, chapter 5.
(3) Clearing the Unit.
To clear the unit, follow these steps:
(a) Set the TEST SELECT switches on the VTM to 00.
(b) Press the TEST button on the VTM.
(c) Check the display on the SETCOM.
The SETCOM display
should show STE/M1 FVS CLEAR UNIT. If it does not, troubleshoot the
test set for the symptom SET COMMUNICATOR DOES NOT DISPLAY STE-M1/FVS
CLEAR UNIT, as outlined in TM 9-4910-751-14-1, chapter 5.
c. Running Self-test 666.
From this point on, all testing is
done using the SETCOM unit (refer to figure 47 on page 64). Continue
the self-test by doing these steps in sequence.
NOTE
The sections of the self-test outlined below have
been titled to assist in identifying the main
component
being
tested.
In
some
cases,
components
other
than
the
main
component
identified in the section title are being
simultaneously tested.
(1) Beginning Self-test 666.
To begin self-test 666, follow
these steps:
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