9-10. TEST PRECAUTIONS AND NOTES.
High voltage (200 V dc) is present at PA mount connector J4. Use caution when connecting the
test setup and taking measurements to avoid personal injury.
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
The Principles of Operation section and schematic diagram can be used to help fault isolate any
unusual problems that might not be covered in the troubleshooting procedures.
9-11. EXPLANATION OF SYMBOLS AND NOTES.
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
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