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TM 1-4920458-13&P
Section IV. Troubleshooting
SECTION CONTENTS
PARA
PAGE
GENERAL
3-12
3-8
PITOT AND STATIC SYSTEMS TESTER INSPECTION
3-13
3-9
ACCESSORY STORAGE INSPECTION
3-14
3-10
3-12.
GENERAL
Troubleshooting at the Aviation Unit Maintenance (AVUM) level is limited to checking the system for indications of
normal operation and inspecting and replacing AC or DC cables and AC or DC fuses.
NOTE
Electrical components (except fuses and power cables) are factory
calibrated and will not be replaced or interchanged in the field or
erroneous readings may result.
If the unit is inoperative, switch to alternate power source (AC to DC, DC to AC). Check the initial power source for
availability of power. If the source is func- tioning, inspect the appropriate power cable for signs of damaged, shorted or
open wiring, or a faulty connector. If the cable checks are reliable, proceed with next task.
3-8
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