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Page Title:
TSUM - 3-001 A-Frame Fold (Deploy) (13) Part 1 |
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 TM 5-5420-279-23
A-Fram e Fold
will not deploy
For the A-Fram e to Fold open (deploy) the following
conditions m ust be satisfied:-
*
Neutral gear selected
*
Parking brake applied
*
Tail Lift Pendant connected & powered
*
Chest Pack not connected
*
4 Position Switch at position 2
*
Ensure E-STOP RESET satisfactory
*
Transport Pins rem oved
*
A-Fram e fold closed lim it switch activated
Yes
*
Launcher solenoid supply enabled (KA1 energised)
*
A-Fram e Fold Deploy button depressed
Power down &
Is
replace defective
Launcher
Perform
Interface Enclosure.
No
No
Deploym ent lam p and
lam p test on
To replace Interface
solenoid SV20a caption
Operator Panel. Are all
Enclosure see
lit on Operator
lam ps lit?
m aintenance
Panel?
procedure 5-098
Yes
Yes
Is
Insert probes of
Disconnect connector from
solenoid SV20a
No
DMM into sockets
solenoid SV20a. See m aint
connector LED lit on the
1 & 2 of
procedure 5-141
Stabilizer
connector
Manifold?
Yes
Disconnect connector from
solenoid SV20a.
See m aint procedure 5-141
Connect DMM
Replace solenoid
across solenoid coil
Is 24V
harness if connector
Yes
pins.
solenoid supply
LED not lit . See
See resistance
present?
m aintenance
check in m aint
procedure 5-139
procedure 5-124
No
Replace Faulty harness,
Interface Enclosure or junction
Power down & check
box as appropriate using the following
harness continuity from
m aintenance procedures:-
solenoid SV20a to
Harness 5-139
Interface Enclosure using
Interface Enclosure 5-098
the cable routing tables in
A-Fram e Junction Box 6-008
section 3.6 of Chapter 3
Go to
Slide Fram e Junct. Box 5-089
Part 2
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