Self Diagnostic Function; Diagnostic Test Indicators; Self Diag. Quick Reference (Led Blinking) - Sony KD-55A9G Service Manual

2019/04/19 01:55:00 (GMT+09:00)
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 .

Self Diag. Quick Reference (LED blinking)

Smart Core
RED LED
blinking count
<B/G> Main 12V over voltage
2x
[MAIN_POWER]
<B/G> Main 5.0V failure [DC_ALERT]
3x
<B/S/G> Audio amp. protection
[AUD_ERR]
<LD/P/B/G> LED driver failure/LED
voltage protection [LD_ERR]
4x
<LD/P/B>Error detection of the I2C
communication between the Main
device and the LD IC.[BCM_ERR]
<P/T/G/B>
ACK
5x
(Also panel power failure is a suspect)
[P_ID_ERR]
6x <G/B> Backlight failure [BACKLIGHT]
<B/H/P> Over temperature protection
7x
[TEMP_ERR]
8x <B> 4KBE Error (4KBE WDT)

SELF DIAGNOSTIC FUNCTION

SB/SBL
<B/G> Main 12V over voltage
[MAIN_POWER]
<B/G> Main 5.0V failure [DC_ALERT]
<B/S/G> Audio amp. protection
[AUD_ERR]
<T/B/G>TCON internal error/TCON I2C
communication error[LD_ERR]
<T/B/G> EVDD Error [BCM_ERR]
<P/T/G/B> Panel ID EEPROM I2C No
ACK
Panel ID EEPROM I2C No
(Also panel power failure is a suspect)
[P_ID_ERR]
<T/B>Data corruption in
EEPROM[P_ID_ERR]
<G/B> G board error[BACKLIGHT]
<B/H/P> Over temperature protection
[TEMP_ERR]
<B> 4KBE Error (4KBE WDT)
SECTION 2
SP SO
<B/G> Main 12V over voltage
[MAIN_POWER]
<B/G> Main 5.0V failure [DC_ALERT]
<B/S/G> Audio amp. protection
[AUD_ERR]
<LD/P/B/G> LED driver failure/LED
voltage protection [LD_ERR]
<LD/P/B>Error detection of the I2C
communication between the Main
device and the LD IC.[BCM_ERR]
<P/T/G/B> Panel ID EEPROM I2C No
ACK
(Also panel power failure is a suspect)
[P_ID_ERR]
<G/B> Backlight failure [BACKLIGHT]
<B/H/P> Over temperature protection
[TEMP_ERR]
<B> 4KBE Error (4KBE WDT)
13
Blue italic: detect at startup sequence only.
<G>: Power supply board,
<B>: Main board,
<T>: T-con board,
<LD>: LD board,
<P>: Panel module,
<S>: Speaker
<H>:USB board
(Supplementary
information)
13 13
SYS SET