TM 1-1520-238-T-6
9–730
9–385. PILOT TADS INDICATOR – IS NOT LIGHTED WITH TADS SWITCH IN TADS POSITION
9–385
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer
One person to assist
References:
TM 1-1520-238-23
TM 9-1230-476-20-2
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Access provisions –
R90 door opened
WARNING
Turn off power before detaching or
attaching wires and connectors. High
current 28 VDC or 115 VAC is present.
Failure to do so could result in death or
serious injury.
1. On pilot forward circuit breaker panel, check that
MISSION ARMS CONTR circuit breaker (CB46)
is open. Check for 28 VDC between P672-121
and P672-114.
Is voltage present?
YES
Go to step 2.
NO
Go to step 4.
2. Check for 28 VDC between P18-34 and ground.
Is voltage present?
YES
Go to paragraph 9–331 to
troubleshoot pilot caution/
warning indicators.
NO
Go to step 3.
3. Check for open between P672-71 and P18-34.
Does open exist?
YES
Repair open wire between:
P672-71 and P524-A2,
J524-A2 and P18-34.
Go to paragraph 9–364.
NO
Refer to TM 9-1230-476-20-2 to
troubleshoot MRTU.
4. On CPG circuit breaker panel 1, open MUX FAB
R circuit breaker (CB9). On pilot ELEC PWR
panel, set BATT/EXT PWR switch to OFF.
Check for open between P672-114 and ground.
Does open exist?
YES
Repair open wire. Go to
paragraph 9–364.
NO
Go to step 6.
5. Check for 28 VDC (A77)J2-13.
Is voltage present?
YES
Go to step 5.
NO
Go to paragraph 9–249 to
troubleshoot circuit protection
system (dc essential bus 3 –
CPG station).
6. Check for open between P419-B13 and
P672-121.
Does open exist?
YES
Repair open wire between
P672-121 and P921-A9,
J921-A9 and P419-B13.
Go to paragraph 9–364.
NO
Go to step 7.
7. Check for open between (A402)J13-B13 and
(A402)XK2-7/8-A3.
Does open exist?
YES
Repair open wire. Go to
paragraph 9–364.
NO
Go to step 8.
