Sony XBR-55X850C / XBR-55X855C / XBR-55X857C / XBR-65X850C / XBR-65X855C / XBR-65X857C / XBR-75X850C / XBR-75X855C Service Manual ▷ View online
XBR-55/65X850C, 855C, 857C, 75X850C, 855C
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 .
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.
<G>: Power supply board, <B>: Main board, <T>: Tcon board,
<P>: Panel module , <S>: Speaker , <A>: Power Adapter
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]
<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
None
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]
<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]
Red italic
: detect at startup sequence only.
XBR-55/65X850C, 855C, 857C, 75X850C, 855C
10
SELF DIAGNOSIS FUNCTION
[SELF DIAGNOSTIC SCREEN DISPLAY]
SELF CHECK
<<
002 MAIN_POWER 000000000000 000000000000 000000000000 000
003 DC_ALERT 000000000000 000000000000 000000000000 000
003 AUD_ERR 150101000018 150101000018 150101000018 003
003 HDMI_EQ 150101000123 150101000045 150101000045 003
003 TU_DEMOD 150101000218 150101000223 150101000105 003
004 LD_ERR 000000000000 000000000000 000000000000 000
004 BCM_ERR 000000000000 000000000000 000000000000 000
005 TCON_ERR 150101000504 000000000000 000000000000 001
005 P_ID_ERR 000000000000 000000000000 000000000000 000
006 BACKLIGHT ERR 000000000000 000000000000 000000000000 000
007 TEMP_ERR 150101000200 150101000002 000000000000 002
007 4KBE_ERR 000000000000 000000000000 000000000000 000
008 SW_ERR 000000000000 000000000000 000000000000 000
Back
00005 00414 00002
[Home]Exit
•Panel Operation Time is recorded every
30 min, but Total Operation Time is recorded every 1 hr.
Therefore, the panel op. time might become larger than
the total op. time.
Smart Core Red LED
blinking count
Error item Naming
Error count
Total Operation Time [hr] – Boot Count – Panel Operation Time [hr]
Format of error timestamps
YYMMDDhhmmss (in UTC)
Example:
120823132523 -> Aug 23 2012 13:25:23 UTC
* Only when time is set, an error timestamp
is saved.
Error timestamp
for last
recorded error
Error timestamp
for second last
recorded error
Error
timestamp for
3rd last
recorded
error
Both of HDMI_EQ/TU_DEMOD have been disabled.
(Refer the previous page for details.)
XBR-55/65X850C, 855C, 857C, 75X850C, 855C
11
SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurrences of failure for
confirmation on the screen:
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
SELF DIAGNOSIS FUNCTION
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen.
After you have completed the repairs, clear the result display to “0”.
Clearing the Self Check Diagnostic List
Panel operation time :
Press the Channel 7 => Channel 0 .
Exiting the Self-diagnostic screen
To exit the Self Diagnostic screen, Power off & on or Push the <Home> button.
XBR-55/65X850C, 855C, 857C, 75X850C, 855C
12
SEC 1. DISASSEMBLY
• There are clutch in the yellow frame[ ]. Therefore please be careful in the case of the disassembly or assembly of parts.
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