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TM 11-5820-890-30-5
6-16. 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).
6-17. TROUBLESHOOTING FLOWCHARTS.
The following charts are included:
Chart
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
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.
Symptom
No display.
All display segments stay lit.
Self-test “F2” display.
Incorrect radio XMT output.
CONTROL M lit, all others blank.
Incorrect display in RF.
Incorrect display in FCTN: MODE or VAR.
Incorrect display in CONTROL.
“Er” is not displayed.
“Fr” is not displayed and/or CONTROL M is not lit.
CM OUT is incorrect.
Incorrect display after test cycle.
“Ud” is not displayed or incorrect indicators.
Power supply output is low.
Incorrect display in FCTN: CHAN or COMSEC.
6-18
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