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TM 11-5820-890-20-2
2-84
2.2.
TROUBLESHOOTING FLOWCHARTS. Continued
Chart 26
RT-A WILL NOT KEY FROM COMMANDER'S C 2298.
MONITOR SWITCH AT ALL POSITION.
(Sheet 3 of 3)
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
CX 13313 P2
CX 13417 P1
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
CX 13313 P1
CX 13417 J1, J2
1. CONNECT CX 13313 OR CX 13417 TO MB J3.
2. CONNECT CX 13300 TO MB J4.
3. INSTALL VAA.
4. INSTALL RTs.
5. SET VAA CB1 TO ON.
6. SET RT-A TO SQ ON.
7. MEASURE VOLTAGE AT CX 13313 P1 OR
CX 13417 J1/J2, PIN S TO PIN A (GND).
NO
YES
1.0 TO 2.5
V dc
?
REPLACE CX 13300.
NO
YES
OPEN
?
1. REMOVE CX 13313 OR CX 13417 FROM
CX 13300.
2. CHECK CONTINUITY AT CX 13313
P1, PIN S TO P2, PIN S OR CX 13417
P1, PIN S TO J1/J2, PIN S.
REPLACE CX 13313 OR
CX 13417.
NOTE:
If CX 13417 present, check
continuity at connector where
CX 13300 was connected.
REPLACE VAA.
2
SH 3
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