4 - 1
4.
Diagnosis Procedure
4.1.
Basic Procedures
The basic procedures for diagnosis, disassembly, and test of defective parts of a set to be repaired are summarized below. For
details, refer to relevant pages in the Service Manual.
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Flow Chart
Power On Self Test
OCCURRENCE OF
TROUBLE
Automatic diagnosis takes
place when the power switch
is set to ON.
Power sw is set to ON.
POST NORMAL
FINISH
POST ERROR
OCCURRENCE
DEFECTIVE PARTS
SORTING
SELF-DIAGNOSIS TEST (IF REQUIRED)
Conduct a self diagnosis test when
it is necessary for conduct
trouble diagnosis.
TROUBLESHOOTING
Defective parts are sorted by
referring to symptoms.
SELF-DIAGNOSIS TEST
After repair, conduct a self-
diagnosis test and make sure that the
repaired set operates properly.
DISASSEMBLY PROCEDURE
Replace defective parts.
REPAIR WORK
INSPECTION
TEST FAILED
TEST OK
END OF
REPAIR WORK
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