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Home > Ordnance Documents and other related manuals > > Testing for a Faulty VTM. - Od160870082
Running Self-test 666.
Testing for a Faulty SETCOM

The M2/m3 Bradley Fighting Vehicle: Fire Control System
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M2/M3 BFV: FIRE CONTROL SYSTEM - OD1608 - LESSON 2/TASK 1
(a) Press the CLEAR key on the SETCOM.
The display should
read: ENTER TEST NUMBER.  If the display cannot be cleared (does not
read ENTER TEST NUMBER), replace the VTM, in accordance with the
procedures  outlined  in  TM  9-4910-751-14-1.
The  faulty  VTM  must
undergo intermediate direct support maintenance level troubleshooting
procedures for symptom 25 as outlined in TM 9-4910-751-14-2, chapter
6.
(b) Press the 6 key three times.
The display should read:
ENTER TEST NUMBER: 666.  Note that the CLEAR key can also be used to
clear the display if a wrong number is entered.
(c) Press the GO key.
The display should read: TEST 666
SELF-TEST.  If the display does not read this, troubleshoot the test
set for the symptom SET COMMUNICATOR DOES NOT DISPLAY TEST 666 SELF-
TEST, outlined in TM 9-4910-751-14-1, chapter 5.
(d) Press the GO key again.
The display should show the
words: REVISION DATE, followed by a number indicating the date when
the program was updated.
(2) Testing for a Faulty VTM.
The
self-test
continues
by
checking for a faulty VTM.
(a) Press the GO key.  The SETCOM display should say: REMOVE
CABLES FROM CIB J1, J2, AND J3.
Check to make sure that no cables
are connected to the CIB connectors J1, J2, and J3.
(b) Press the GO key again.  The display should read: TEST IN
PROGRESS PLEASE WAIT.
Wait for the display to change.
If the
message on the display reads: BUTTON TEST: PRESS RETEST, the VTM is
operational.
When this is the case, proceed to test for a faulty
SETCOM unit, as described in paragraph 5c(3) on the following page.
If the message on the display shows the words FAULTY VTM, followed by
a set of numbers, perform these steps:
1 Record the message and number.
2 Press  the  GO
key.
The
display
will
read:
TEST
FINISHED PUSH STOP AND CLEAR.
74






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