KDL-55X4500 - Sony TV Service Manual (repair manual). Page 6

KDL-55X4500 (CH)     6

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY 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 STANDBY 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.

When an error occurs, the STANDBY 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 .

2 times

POW_ERR1

AAS Board IC2104
79pin:  i_lb_err (AD port) < PW_ERR_LEV (Threshold Value)
and
138pin: i_ac_off_det: HIGH

5 times

T_CON

1

128Pin: TCON_RDY: Low

or

2

Detected Error of Cayenne Register

6 times

BACKLITE

78Pin: INV_FAIL: LOW

7 times

PANLTEMP

IIC_ch2 setting value (BEM data)

8 times

AUD_PROT

AAS Board IC2104
19pin: i_au_prot: Low

9 times

FAN_ERR

pin154: FAN_ERR: High

13 times

BALANCER

1

163pin: BALANCER_ERR: LOW

or

2

SPI_ERR_CNT (SetSREG) >= SPI_ERR_LIM (FactSREG)

Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY LED for flashing.

STANDBY 

LED

2 sec