KDL-40XBR7 - Sony TV Service Manual (repair manual). Page 11

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY LED indicator will automatically begin to fl ash. The number 
of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY LED fl ash 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 indicator will fl ash a set number of times to indicate the possible cause of the problem. If there is more than 
one error, the indicator will identify the fi rst of the problem areas.

Senses room light level and adjusts the screen brightness 
accordingly. Do not put anything near the sensor or the nearby  

general area as its function may be affected.

Lights up in green when the TV is turned on.

Lights up in red when your TV is in PC standby mode. If the 
LED blinks in red continuously, this may indicate that the TV 
needs servicing.

Lights up in green when the 

 feature is activated. 

Lights up in orange when the timer is set. When the timer is 
set, this LED will remain lit even if the TV is turned off.