Self Diagnostic Function; Diagnostic Test Indicators; Self Diag. Quick Reference (Led Blinking) - Sony KD-55A9F Service Manual

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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
2x
<B/G> Main 12V over voltage [MAIN_POWER]
<B/G> Main 5.0V failure [DC_ALERT]
3x
<B/S/G/D/K> Audio amp. protection [AUD_ERR]
<T/B/D>TCON internal error/TCON I2C communication
error[LD_ERR]
4x
<T/D> EVDD Error [BCM_ERR]
<P/T/G/B/D>
5x
(Also panel power failure is a suspect) [P_ID_ERR]
<T/B/D>Data corruption in EEPROM[P_ID_ERR]
6x
<G/B/D> G board error[BACKLIGHT]
7x
<B/H/P> Over temperature protection [TEMP_ERR]
8x
<B/D> 4KBE Error (4KBE WDT)
SECTION 2

SELF DIAGNOSTIC FUNCTION

CS
Panel ID EEPROM I2C No ACK
Blue italic: detect at startup sequence only.
<G>: Power supply board,
<B>: Main board,
<T>: T-con board,
<LD>: LD board,
<K>: Audio board (CS only)
<P>: Panel module,
<S>: Speaker,
<Tu>: Tuner board (CS only),
<H>:USB board (CS only),
<D>: 4KBE board (CS only)
11
SYS SET

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