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Page Title:
Table 8-4. Monitor Reply Evaluator (A3), Troubleshooting |
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 T.O. 12P4-2APX-192
NAVAIR 16-35TS1843-1
TM 11-6625-1646-25
Table 8-4. Monitor Reply Evaluator (A3), Troubleshooting (See figure FO-4)
Test
Test
Control Settings
Normal
If Indication
Step
Point
Equipment
and Instructions
Indication
Is Normal
If Indication Is Abnormal
1
P13 of
Test set-up
Set-up oscillo-
Refer to
Proceed to
Replace A4 module. Depot
A3
scope for external
step 2.
level maintenance re-
(D)
and A3
triggering; place
quired.
extender
RAD TEST-MON
board.
switch on C-6280
in MON position.
Set-up AN/UPM-
98A controls per
step 5.
2
B1 of
Same as
Same as step 1.
Same as
Proceed to
Check Q3, Q4, Q8 and as-
Q4
step 1
step 1.
step 3.
sociated components.
(E)
Replace defective com-
ponent(s).
3
Collector Same as
Same as step 1.
Proceed to
Check Q3 thru Q8 and as-
of Q6
step 1
step 4.
sociated components.
Replace defective com-
2 SEC
ponent(s).
MIN
4
Base of
Same as
Same as step 1.
Same as
Proceed to
Check CR12, Q9 thru Q11
Q12
step 1
step 1.
step 5.
and associated components.
(F)
Replace defective com-
ponent(s).
5
Visual
None
None
Indicator
Proceed with
Check Q12, Q13, Q14 and
remains
routine
associated components.
on for a
troubleshoot-
Replace defective com-
minimum
ing pro-
ponent(s).
of two
cedures on
seconds.
A3 module.
Table 8-5. Mode Generator (A2), Troubleshooting (See figure FO-2)
Test
Test
Control Settings
Normal
If Indication
Step
Point
Equipment
and Instructions
Indication
Is Normal
If Indication Is Abnormal
1
Collector
Test set-up
Place RAD TEST-
Refer to
Proceed to
Check Q3, Y1 and associ-
of Q3
MON switch on
step 2.
ated components. Replace
(A)
and A2
C-6280 in OUT
defective component(s). If
extender
position. Place
Q3, Y1 and associated com-
board
one of the MODE
ponents are okay, replace
selector switches
A2 module. Depot level
in TEST position.
maintenance required.
2
Collector
Same as
Same as step 1.
Same as
Proceed to
Check Q1, Q2 and associ-
of Q2
step 1
step 1.
step 3.
ated components. Replace
(B)
defective component(s).
3
TP1
Same as
Same as step 1.
Same as
Proceed to
Replace A2 module. Depot
(2)
step 1
step 1.
step 4.
level maintenance required.
4
TP2
Same as
Same as step 1.
Same as
Proceed with
Check Q4, Q5, Q6 and as-
(3)
step 1
step 1.
routine
sociated components. Re-
troubleshoot-
place defective com-
ing pro-
ponent(s).
cedures on
A2 module.
8-12
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