Self Diagnostic Function; Self Diagnosic - Sony KD-49X7 D Series Service Manual

The units in this manual contain a self-diagnostic function. If an error occurs, the Smart Core Red LED will automatically begin to flash.
The number of times the LED flashes translates to a probable source of the problem.
A definition of the Smart Core Red LED flash indicators is listed in the instruction manual for the user's knowledge and reference.
If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how
often these problems occur.
DIAGNOSTIC TEST INDICATORS
When an error occurs, the Smart Core Red LED will flash a set number of times to indicate the possible cause of the problem.
If there is more than one error, the LED will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen.
If the screen displays a "0", no error has occurred .
Smart Core RED
LED blinking count
2x <B/G/A> Main 12V over voltage [MAIN_POWER]
<B> Main 5.0V failure [DC_ALERT]
3x
<B/S> Audio amp. protection [AUD_ERR]
4x None
<P/T/G/B>
5x
failure is a suspect)
6x <G/P/B/LD> Backlight failure [BACKLIGHT]
Over temperature protection [TEMP_ERR]
7x
<B> Temp. sensor I2C No ACK [TEMP_ERR]
8x None
SECTION 2

SELF DIAGNOSTIC FUNCTION

QM-L/QH-L/QH2/QE-L/QE
Panel ID EEPROM I2C No ACK (Also panel power
[P_ID_ERR]
blue italic: detect at startup sequence only.
<G>: Power supply board,
<B>: Main board,
<T>: T-con board
<LD> LD board (if AC adapter model, it would
power supply for Set)
<P>: Panel module
<S>: Speaker
<A>: Power Adapter,
<D>: 4KBE + audio board (w/ 4KBE only),
<Tu>: Tuner board (w/o 4KBE only)
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