Sony XBR-49X835D, Service Manual

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XBR-49X835D
8
SELF DIAGNOSIS FUNCTION
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 .
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.
RED LED blinking count Detection Items
2x
<B/G/A> Main 12V over voltage [MAIN_POWER]
3x
<B> Main 5.0V failure [DC_ALERT]
<B/S> Audio amp. protection [AUD_ERR]
4x
None
5x
<P/T/G/B> Panel ID EEPROM I2C No ACK (Also panel power failure is a suspect) [P_ID_ERR]
6x
<G/P/B/LD> Backlight failure [BACKLIGHT]
7x
Over temperature protection [TEMP_ERR]
<B> Temp. sensor I2C No ACK [TEMP_ERR]
8x
None
<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)
Blue italic : detect at startup sequence only.
Record Only Item Detection Items
TU_DEMOD
<B/Tu> Tuner & Demodulator I2C communication failure
Tuner board set detect
TCON_ERR None
FRCTC_I2C
<T> FRC device is not finished Initial sequence
FRC device I2C communication failure
AUD_ERR_I2C None
Below items are not included in the “RED LED count” but will be recorded as an error and will be shown on the self diagnostic Screen display on the following page.