PS Magazine - TB 43-PS-666
PS, The Preventative Maintenance Monthly
ISSUE 666
MAY 2008
1.
Remove the radio cover and check the part number of the CCA in the A10 slot. If the
part number is A3131457, a real failure has happened. Replace the CCA.
If the part number is A3137670, reinstall the cover and repeat the test.
2.
If the RT displays a FAIL4 code as well as a FAIL6, press and release the “8” key on the
keypad until the internal failure codes are displayed. If failure codes “A15-2” or “A10-5”
appear, you have a false failure. Press the GO/ENTER key as instructed for a pass condition
on the GRM display and soldier on.
3.
If other failure codes are displayed, you have an actual failure and the CCA should
be replaced.
1.
Remove the radio cover and check the part number of the CCA in the A10 slot. If the
part number is A3131457, a real failure has happened. Replace the CCA.
If the part number is A3137670, reinstall the cover and repeat the test.
2.
If a failure occurs during the test where the GRM-122 display reads “Read RT display for
FAIL6”, set the RT FCTN to TST and observe the RT display. If FAIL4 and/or FAIL2 appears
in addition to FAIL6, press and release the “8” key on the keypad until the internal failure
codes are displayed. If failure codes “A15-2”, “A10-5”, “A12-1” or “A12-2” appear, you
have a false failure. Press the GO/ENTER key as instructed for a pass condition on the GRM
display and keep on testing.
3.
If other failure codes are displayed, you have an actual failure and the CCA should
be replaced.
40
PS 666
MAY 08
A GRM Test
That Needs a Check
A GRM Test
That Needs a Check
sometimes
equipment
problems
resurface
that were
thought to
be solved.
that’s because
the equipment
has lasted
longer than
the paperwork
that covered
the solution to
the problem.
a case in point
is a problem on
the dr6 and dr
7
models of the
sincgars rt-1523a.
that problem is
a false failure
reading during
testing with the
an/grm-122.
at the heart of the
problem is remote
switch cca, nsn
5998-01-490-
7
0
7
1.
it’s the switch that
replaced remote
switch cca, nsn
if, while testing a dr
7
model
rt-1523a, there is a failure
during the function switch bit
Check immediately after the
point the grm-122 display
reads “read rt display for
fail6,” set the rt fctn to tst
and follow these steps…
if, while testing a dr6 model
rt-1523a, there is a failure
during the function switch bit
Check immediately after the
point the grm-122 display
reads “read rt display for
fail6,” set the rt fctn to tst
and follow these steps…
if you have questions
about any of this, cecom
lcmc experts are standing
by at dsn 992-2082,
(
7
32)532-2082, or dsn
992-9141, (
7
32)532-9141.
you can reach them by email:
david.yanosik@us.army.mil
and
martin.fitch@us.army.mil
.
RT-1523A
SINCGARS…
666.40-41.indd
1-2
3/23/08
7:51:17 PM
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