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TM 11-5820-890-30-5
2-27. TEST PRECAUTIONS AND NOTES.
Set the test power supply to OFF before connecting or disconnecting a test setup. Current
capacities are large enough to cause personal injury. Equipment can also be damaged if care is
not taken.
High voltage is present in the test adapter (200 V dc) and in the RT (60 V dc). Use caution when
troubleshooting to avoid personal injury. Set reference fixture CB1 to OFF before connecting or
disconnecting a test setup.
CAUTION
Static electricity and stray voltages can damage the RT modules. Use an antistatic pad on the
work surface and wear a grounded wrist strap when troubleshooting or handling the modules.
NOTE:
The Principles of Operation section, functional block diagrams, and figures FO-1
through FO-12 can be used to fault isolate any unusual problems that may not be
covered in the troubleshooting procedures.
2-28. EXPLANATION OF SYMBOLS AND NOTES.
SYMBOL
EXPLANATION
Test Procedure Start: (Rectangle with rounded sides)
Indicates start of the test procedure and contains a brief
description of the symptom of trouble.
Test Procedure Flow Line: (Heavy line) Indicates direction
of the procedure flow.
Test Procedure Instruction: (Rectangle) Provides test
setup or instructions for doing a specific test.
Decision: (Diamond) Indicates that a decision must be
made (YES or NO) in answer to question about the
previous test. Path taken depends on the answer
(YES or NO).
Connector: (Circle) Directs user to an entry point of
another chart. Contains an entry number that is the same
as entry number of other chart and a sheet number
(Sh. No. ) that indicates the number of follow-on pages.
Notes Column: Presents additional information, such
as: more specific instructions about how to do a test,
cautions and warnings that must be observed when doing
a test, and additional information about what to do after
doing a test. Also provides reference to appropriate
circuit diagrams.
2-29
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