Philips FM-2, Service Manual

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Chapter 3 - Tests and Error Codes
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3
Tests and Error Codes
Service Philosophy
If the monitor detects a problem, it displays an error screen that shows an error
reference number, and monitoring is discontinued. In addition, the errors are
written to the error log (see Table 3, “FM-2 Error Codes,” on page 23).
Read the system error log to determine whether the fault lies in the hardware or
firmware. These problems can be repaired by board replacement or unit
exchange. Do not attempt component-level board repair.
Overview of the Service Tests
A brief overview of the service tests that are used to verify performance following
repairs or during routine maintenance follows. All tests can be performed
without removing the covers of the monitor.
• Visual Test (see page 20)
• Power-On Self Test (see page 20)
• Performance tests for transducers, to check the processing of the signal from
the transducers (see “Testing Transducers” on page 90)
• Safety Tests
These test the electrical safety of the monitoring system and must be carried
out after upgrades and repairs. You must use a safety testing analyzer.
– System Safety Test (see page 89)
– Safety Test Blocks (see Table 21, “Test and Inspection Matrix,” on
page 81)