Sony Bravia XBR-55X900C, Service Manual

Page: 9 / 208

XBR-55/65X900C, 905C, 907C
9
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
<G/B> Main 12V over voltage [MAIN_POWER]
3x
<B> Main 5.0V failure [DC_ALERT]
<B/S> Audio amp. protection [AUD_ERR]
<B> Tuner or demodulator I2C No ACK [TU_DEMOD]
[Note.1]
<B> HDMI Switch/Equalizer I2C communication error [HDMI_EQ] [Note.2]
Note.1 / Note.2 : Both functions were disabled but remains on the Self diagnosis screen like in the next page.
Note.2 : There are some sets which still enable this HDMI error detection function.
Among these, software version updated or installed to PKG2173 or higher have this function disabled.
4x
<LD/P> LED driver failure/LED voltage protection [LD_ERR]
<LD/P> Error detection of the I2C communication between the Main device and the LD IC.[BCM_ERR]
5x
<P/T/G/B> Panel ID EEPROM I2C No ACK (Also panel power failure is a suspect) [P_ID_ERR]
<T> TCon IC I2C communication error [TCON_ERR]
6x <G/P/B> Backlight failure [BACKLIGHT]
7x
Over temperature protection [TEMP_ERR]
<B> Temp. sensor I2C No ACK [TEMP_ERR]
<B> V By One lock error between Main device and 4KBE device [4KBE_ERR]
8x <B> Software error [SW_ERR]
<G>: Power supply board, <B>: Main board, <T>: Tcon board, (LD) board ,
<P>: Panel module , <S>: Speaker , <A>: Power Adapter
Red italic : detect at startup sequence only.