TM 11-7440-232-12/NAVELEX 0967-LP-275-5010
TROUBLESHOOTING CHART NO. 5 (cont'd)
STEP
INSTRUCTION
INDICATION
YES
NO
REMARKS
14
-30 dbm
X
Go to step 16.
(cont)
-30 dbm
X
Go to step 15.
15
Check limiter
discriminator preamp in-
put level using test
hookup in step 14. Move
electronic voltmeter
lead to PREAMP IN
(TP1).
-16 dbm nominal
X
Go to step 18.
-16 dbm nominal
X
Go to step 16.
16
Recheck limiter dis-
Same INDICATIONS
Limiter discrim-
criminator output using
as in step 5.
X
inator is func-
test hookup and proce-
tioning correct-
dures as outlined in
ly. Go to step
step 5 of this trouble-
17.
shooting chart.
Same INDICATIONS
Replace limiter
as in step 5.
X
discriminator
and continue
trouble-
shooting.
17
Check operation of
ERRORS lamp lights
bandpass filter section
intermittently
X
Go to step 18.
of receiver line filter.
Set transmitter TRANS
MODE switch to PATT.
ERRORS lamp lights
Replace re-
Set limiter discriminator
intermittently
X
ceiver line
REC MODE switch to
filter and
BACK-TO-BACK.
repeat this
step.
5-46
