TM 11-5820-890-10-1
PMCS Continued
3
RECEIVER-TRANSMlTTER SELF-TEST
Item
no.
When
PROCEDURE
B
A
4
a. Vehicular: Turn CB1 of mounting adapter
to ON.
b. Vehicular: Turn lamp lens full left
(counterclockwise).
c. Set FCTN TO SQ ON, CHAN to MAN,
DATA to OFF.
d. Set COMSEC to CT. If alarm is heard,
refer to page 2-38 and 2-39.
e. Set VOL to midrange.
f. If KEK is to be used, load it.
g. Set FCTN to TST.
h. Watch as displays cycle in the following
sequence:
l ECCM (E) and
COMSEC module
(C) check: if either
module is not in RT,
dash is shown in
place of letter. Short
bursts of rushing noise
are heard. If E
is seen, a beep is
heard after rushing noise.
l Signal strength display
check: lights at all
positions from LO to HI.
l Display checks. All dots
light as shown.
l Self-test should result in
"GOOD ". If FALL 5, merely
change from
to CT and
test will show "GOOD". If any
other fail message results, do
the following in order:
(1) Rerun self-test.
(2) If fail message continues, set FCTN to
and run self-test again.
(3) If fail message still continues, disconnect
all cables from RT panel, go to
and rerun self-test.
(4)
if display shows ‘GOOD”, perform PMCS
on cables, reconnect cables, and repeat
self-test.
(5)
If fail message now appears, contact unit
maintenance.
NOTE
If test
is done with COMSEC set to
, display shows " FAIL 5”.
Equipment not
ready/available
if: (See Maint)
Mounting adapter
Dower light is
not on, or con-
tinues to blink.
Display does not
light.
Display is
incorrect; rush-
ing noise not
heard: beep not
heard (if appli-
cable).
Any position
does not light.
Any part of
display is not lit
GOOD is not
shown.
5-4
