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Page Title:
TROUBLESHOOTING FLOW CHARTS |
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 TM 5-5420-279-23
r. Plug and Socket Break Points - Plug and Socket Break Points in the Harnesses between
the Chassis Junction Box, Lower A-Frame Junction Box and the Moving Slide Frame Junction
Box allow the DSB to be disconnected electrically when preparation for air transportation is
required.
A set of drawings showing the electrical system, in detail, are shown in Appendix G.
a. The trouble-shooting flow charts are designed to assist the Unit Maintenance personnel in
systematically diagnosing a fault and providing a solution for the rectification of that fault. The
trouble shooting flow chart indicates faults to LRU level, a qualified electrician can carry out
trouble shooting to component level with the aid of the Launcher Electrical System Drawings at
b. The title of the trouble shooting flow chart is constructed with the TSUM number, subject title
and reference number (where applicable) to a step in the build sequence of a 40m bridge in
Chapter 6 of the operator's manual TM 5-5420-279-10, for example; TSUM - 3-001 A-Frame Fold
(Deploy) (13).
c. All trouble shooting flow charts start at the top of a page. The boxes used in the flow charts
depict the following information.
(1)
A circle or rounded rectangle shows the start or end of a flow chart sequence.
(2)
A rectangle or square displays information intended as an instruction or statement.
(3)
A diamond box displays a question or requires the reader to make a decision.
(4)
TSO stands for Trouble Shooting Operator, these can be found in the operator's manual
TM 5-5420-279-10.
(5)
TSUM stands for Trouble Shooting Unit Maintenance.
d. The following abbreviations are used throughout the trouble shooting flow charts and refer to
main electrical enclosure or junction boxes in the electrical system:
(1)
IE
Interface Enclosure.
(2)
CB
Chassis Junction Box.
(3)
MF
Moving Slide Frame Junction Box.
(4)
LF
Lower A-Frame Junction Box.
(5)
ESLL
Left Side Lower E-Stop and Remote Chest Pack Junction Box.
(6)
ESRL
Right Side Lower E-Stop and Remote Chest Pack Junction Box.
(7)
ESLU
Upper Left Side E-Stop.
(8)
ESRU
Upper Right Side E-Stop.
(9)
DMM
Digital Multimeter.
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