2-30. MAINTENANCE ACTION PRECISE SYMPTOM (MAPS) CHART.
The MAPS chart is used to find the troubleshooting chart to use when a symptom has been provided by Unit
Maintenance. It is a flowchart similar to the troubleshooting flowcharts. Do not start the MAPS chart until after the
pre-troubleshooting check has been passed.
The purpose of the MAPS chart is to locate the correct troubleshooting flowchart without performing the entire
operational check. Many times, multiple symptoms will be present. The MAPS chart identifies which symptom
should be checked first.
A description of the flowchart symbols is in paragraph 2-28.
To use the MAPS chart, proceed through the flowchart until a circle is reached that directs you to a step (or
steps) in the operational check. Perform that step (or steps) in the operational check. If more than one step is
indicated, perform them in the order listed. If all of the checks (or steps) are passed, return to the MAPS chart. If
the circle has a PASSED CHECK arrow, then return to the MAPS chart where indicated. If the circle does not have
a PASSED CHECK arrow, then the symptom was not verified. Perform the operational check.
After a bad module has been replaced, repeat the operational check step that was not passed. The entire
operational check should be passed before an RT is returned to Unit Maintenance. It is not necessary to repeat
steps that were passed as part of the troubleshooting process.