TM 1-1520-238-T-6
9–198
Change 10
9–39.
RECT 2 INDICATOR ON PILOT CAUTION/WARNING PANEL – IS LIGHTED
9–39
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
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Access provisions –
R200 panel removed
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. Check for 28 VDC at T/R 2 positive (+) output
terminal.
Is voltage present?
YES
Go to step 4.
NO
Go to step 2.
2. Check for open between:
T/R 2 negative (-) terminal and ground,
P12 and ground.
Does open exist?
YES
Repair open wire.
Go to paragraph 9–23.
NO
Go to step 3.
3. Check for 115 VAC at:
P12-B,
P12-I,
P12-F.
Is voltage present?
YES
Replace T/R 2
(TM 1-1520-238-23).
NO
Go to step 4.
4. Check for 115 VAC at:
P4-F,
P4-E,
P4-D.
Is voltage present?
YES
Repair open wire between:
(A402)J4-F and P12-B,
(A402)J4-E and P12-I,
(A402)J4-D and P12-F.
Go to paragraph 9–23.
NO
Go to paragraph 9–150 to
troubleshoot circuit protection
system (ac essential bus 1 –
pilot station).
5. Check for open between T/R 2 POS (+) output
terminal and dc contactors POS (+) input
terminal.
Does open exist?
YES
Repair open wire.
Go to paragraph 9–23.
NO
Go to step 6.
6. Detach P440.
Is RECT 2 indicator lighted?
YES
Go to step 7.
NO
Go to step 8.
7. Check for short to ground between P440-B5 and
P18-16.
Does short exist?
YES
Repair shorted wire.
Go to paragraph 9–23.
NO
Go to paragraph 9–333 to
troubleshoot pilot
caution/warning system.
