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Chapter 7 Fault Diagnosis
127
7.2 Troubleshooting Procedures
START
Seek for technical help
Fault reset
NO
YES
NO
Please shut down the power
supply immediately to avoid
further expansion of the fault
NO
YES
Seek for technical help
Seek for technical help
END
Identify the fault code per 4.4.4" Common
Characters Displayed by LED" AND whether
the fault code can be Identified
Find out the possible reasons and
countermeasures for the failure as per the
above table, and whether this failure is
removed
Serious fault occurs, such as abnormal sound
upon power up and no display