Panasonic CT-30WX54J Service Manual page 13

7. Auto diagnosis feature
This receiver incorporates a new self diagnosis feature. With this new feature will be easier for
the technician to detect the failures. There is a LED located by the keyboard on the front panel,
this LED will start flashing when a failure is detectedby the circuits located in specific areas,
depending on how many times the LED is flashing, this will tell you what circuit should be
checked. Make a count of flashing and see the table shown below. Please use this feature
effectively especially forintermittent problems.
SOS of front LED
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