TB8100 Service Manual Power Management Unit Fault Finding 247
© Tait Electronics Limited September 2006
13.11 Final Tasks
Once you have completed the testing and repair (if required) of the PMU,
carry out the following tasks.
Task 1 —
Final Tests
Test the PMU to confirm that it is fully functional again. The recommended
tests are listed below:
1. Set up the test equipment as shown in Figure 13.2 on page 222, and
apply power. Check that no alarms are generated.
2. Reload the customer’s configuration (if required).
3. Check that the output voltages are correct.
4. Run the Service Kit and carry out the control and supply tests
(Diagnose > Power Management).
It is good practice to record the test results on a separate test sheet. You can
then supply a copy of the test sheet to the customer as confirmation of the
repair.
Task 2 —
Final
Administration
The final administration tasks are the standard workshop procedures for
updating the fault database and returning the repaired PMU to the customer
with confirmation of the repair.
If the PMU could not be repaired for one of the following reasons:
â– fault not located
â– repair of fault failed
Level-1 service centres should return the faulty PMU to the nearest
Accredited Service Centre, and level-2 service centres should return the
PMU to the International Service Centre. Supply details of the customer,
the fault and, if applicable, the attempted repair.
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