M2/M3 BFV: TROUBLESHOOTING - OD1610 - LESSON 2/TASK 1
Now 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.
Now press the GO key.
The display should
show the words: REVISION DATE, followed by a number indicating the date when
the program was updated.
(b) Testing for a Faulty VTM. The self-test continues by checking
for a faulty VTM. First, 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.
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
3e(2)(c), page 64.
If the message on the display shows the words FAULTY
VTM, followed by a set of numbers, perform these steps:
Step 1:
Record the message number.
Step 2:
Press the GO key.
The display will read: TEST FINISHED PUSH STOP
AND CLEAR.
Step 3:
Press the STOP key.
Step 4:
Press the CLEAR key.
Step 5:
Replace the VTM, in accordance with the procedure outlined in TM
9-4910-751-14-1.
Step 6:
Repeat the self-test.
(c) Testing for a Faulty SETCOM.
If the VTM is not faulty, the
self-test continues by testing for a faulty SETCOM unit. If any characters
are missing, or if the display is not as indicated in the following tests,
replace the set communicator (SETCOM), in accordance with the procedures
outlined in TM 9-4910-751-14-1, and repeat the self-test to this point. To
test for a faulty SETCOM, perform the steps that follow:
Step 1:
The display should read:
BUTTON TEST: PRESS RETEST.
65
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