The Blinking Led Procedure - Philips 29PT6441/85 Service Manual

The Blinking LED Procedure

Using this procedure, you can make the contents of the error buffer visible via the front
LED. This is especially useful when there is no picture.
When the SDM is entered, the front LED will blink the contents of the error-buffer:
When all the error-codes are displayed, the sequence finishes with a LED blink of
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1.5 seconds,
The sequence starts again.
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Example of error buffer: 12 9 6 0 0
After entering SDM, the following occurs:
1 long blink of 5 seconds to start the sequence,
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12 short blinks followed by a pause of 1.5 seconds,
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9 short blinks followed by a pause of 1.5 seconds,
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6 short blinks followed by a pause of 1.5 seconds,
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1 long blink of 1.5 seconds to finish the sequence,
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The sequence starts again at 12 short blinks.
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Protections
If a fault situation is detected, an error code will be generated; and, if necessary, the
television set will go into protection mode. Blinking of the red LED at a frequency of 3
Hz indicates the protection mode. In some error cases, the microprocessor does not put
the set in protection mode. The error codes of the error buffer and the blinking LED
procedure can be read via the Service Default Menu (SDM), or via ComPair.