Philips Avalon FM20, Service Manual

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7 Testing and Maintenance
91
Evaluation of Test Results
The evaluation of the test results must be performed by appropriately trained personnel with sufficient
product, safety testing, and application knowledge.
If any test results are between 90% and 100% of the respective expected result, the previously
measured reference values must be taken into consideration for the assessment of the electrical safety
of the device under test. If no reference values are available, you should consider shorter intervals
between upcoming recurrent tests.
NOTE
If any single test fails, testing must be discontinued immediately and the device under test must be
repaired or labeled as defective. Be sure to inform the user about the test failure in writing.
Other Regular Tests
The care and cleaning requirements that apply to the monitor and its accessories are described in the
Instructions for Use. This section details the periodic maintenance recommended for the monitor,
transducers, and accessories.
Transducers and Patient Modules; Functional Tests
If any of the following tests fail, repeat the test using another transducer. If the second transducer
passes the tests, confirming that the first transducer is defective, contact your service personnel.
If the second transducer also fails the tests, contact your Philips Service Engineer or Response Center.
Ultrasound Transducer Electrical Check
CAUTION
Use of ultrasound gel that is not approved by Philips may reduce signal quality and may damage the
transducer. This type of damage is not covered by warranty.