Self Diagnostic Function - Sony XR-50X9 J Series Service Manual

2021/02/25 22:52:59 (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
2x
3x
4x
5x
6x
7x
8x
SAFETY NOTES
S E L F D I A G N O S T I C F U N C T I O N
Error Item
MAIN_POWER <B/G> Main 12V over voltage
DC_ALERT <B/G> Main 5.0V failure
AUD_ERR <B/S> Audio amp. protection
<LD/P/B/G> LED driver failure/LED voltage
LD_ERR
<LD/B> LD IC initialize failed.
BCM_ERR I2C communication between the Main device and the
<B/T/P/G> Panel ID EEPROM I2C No ACK (Also
P_ID_ERR
panel power failure is a suspect)
BACKLIGHT_ERR <B/G/P/LD> Backlight failure
TEMP_ERR <B/H/P> Over temperature protection
4KBE_ERR <B> 4KBE WDT

SELF DIAGNOSTIC FUNCTION

TROUBLESHOOTING
AR
protection
Error detection of the
LD IC.
Blue italic: detect at startup sequence only.
<G>: Power Supply board, <B>: Main board, <T>: T-con board,
<LD>: LD board, <Tu>: Tuner board, <A>: Power Adapter,
<P>: Panel module, <S>: Speaker, <H>: H-board
SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
11 11
SYS SET