The Blinking Led Procedure - Philips PTV910 Service Manual

The Blinking LED Procedure

The contents of the error buffer can also be made visible through the "blinking LED" procedure. This is
especially useful when there is no picture.
NOTE: If errors 1, 2, 3, or 4 occur the LED ALWAYS blinks indicating the last error which occurred,
even if the set is NOT in service mode.
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When the SDM is entered, the LED will blink the number of times equal to the value of the error code.
Upon entry into the SDM, the LED will blink the contents of the error-buffer.
Error-codes greater than/equal to 10 are shown in the following manner:
A long blink of 750 milliseconds indicating the decimal digit, followed by a pause of 1500 milliseconds.
The LED will then blink the number equal to the error code. When all error-codes are displayed, the
sequence is finished with an LED display of 3 seconds. At this point the sequence will begin again.
Example:
Error code position 1
Error buffer: 12 9 6 0 0
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After entering SDM:
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The sequence will begin with 1 long blink of 750 milliseconds, then pause 1500 milliseconds, then
blink twice (indicating error code 12), then the LED will pause for 3 seconds, then blink 9 times
(indicating error code 9), then the LED will pause for 3 seconds, then blink 6 times (indicating error
code 6), then pause 3 seconds and blink for 3 seconds again, ending the blinking sequence.
Exiting Service Default Mode
To exit the Service Default Mode, press the Power button.
Service Alignment Mode (SAM)
Introduction
The Service Alignment Mode (SAM) is used to align the set and/or adjust the option settings and to
display/clear the error code buffer values.
Entering Service Alignment Mode
To enter the Service Alignment Mode (SAM), press the following key sequence on the remote control
transmitter:
0-6-2-5-9-6-INDEX or STATUS
Do not allow the display to time out between entries while keying the sequence
It is also possible to enter the Service Alignment Mode by pressing the "VOLUME +" and "VOLUME -" key
on the local keyboard simultaneously for at least 4 seconds when the set is in SDM.
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7615 Adjustments page 3