Diagnosis Procedure; Basic Procedures; Power On Self Test - Panasonic CF-48 Service Manual

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.
l l l l l Flow Chart
DEFECTIVE PARTS
SORTING
REPAIR WORK
INSPECTION
OCCURRENCE OF
TROUBLE

Power On Self Test

POST NORMAL
FINISH
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.
DISASSEMBLY PROCEDURE
Replace defective parts.
SELF-DIAGNOSIS TEST
After repair, conduct a self-
diagnosis test and make sure that the
repaired set operates properly.
END OF
REPAIR WORK
Power sw is set to ON.
POST ERROR
OCCURRENCE
TEST OK
4 - 1
Automatic diagnosis takes
place when the power switch
is set to ON.
TEST FAILED