KDL-55V5100 - 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.

* Lights up in green when the TV set is turned on.

* If LED blinks continuously, this may indicate that the TV needs 
  servicing.

STANDBY LED

PIC OFF/
TIMER
LED

* Lights up in red when function PC Power Management
   is activated and there is no signal received while in the PC input.

* Lights up in amber when the Timer  or Sleep functions are set. 
  When timer is set, this LED remains lit even when the TV is 
  turned off.
* Lights up in green when the Backlight is turned off.

POWER LED

Green or Amber

LED

Green LED

Red LED