Troubleshooting is done on a faulty power supply adapter. The steps to determine if a power supply adapter is
faulty and how to troubleshoot it are as follows:
When a power supply adapter iS received from unit maintenance, inspect it for damage. Repair any
damage before proceeding with testing.
See section IV if repairs are necessary.
Verify the symptom. Perform the operational check found in paragraph 13-9. This will direct you to
the correct troubleshooting flowchart or identify the fault.
Troubleshoot the power supply adapter using the flowchart. It will identify the defective module or
Replace the defective module or component.
Follow the procedures in section IV.
Verify the repair. Repeat the operational check in paragraph 13-9 that failed. If it passes, then con-
tinue with the rest of the operational check. When the operational check is passed, the power supply
adapter can be returned for use.
13-11. 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
The Principles of Operation section, functional block diagrams
help fault isolate any unusual problems that might not be
and figure FO-28 can be used to
covered in the troubleshooting