KDL-32EX650, KDL-32EX651, KDL-40EX650, KDL-40EX651, KDL-46EX650, KDL-46EX651 - Sony TV Service Manual (repair manual). Page 15

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KDL-32EX650/32EX651/40EX650/40EX651/46EX650/46EX651 6
OVERVIEW
This chapter provides information regarding the Self Diagnosis feature in 
our TVs.
UPDATING THE SOFTWARE
The Self Diagnosis function is designed to provide information regarding 
the problem with the TV, however, there are several issues that may be 
resolved by updating the TV software to the latest version. Always check 
the Sony site for any issues that are software related. Most symptoms that 
are correctable by software updates involve communications issues with 
other devices or minor glitches in the operation of a specific function. Below 
is a list of some of the symptoms that may be corrected with a software 
update:
 
Fluctuations in picture brightness
 
Intermittent picture freezing or noise
 
Problems with certain inputs (especially HDMI)
 
Intermittent or distorted audio
 
Erratic remote control operation
 
TV turns on and off by itself
 
Loss of color
 
Internet connectivity
 
Certain features not working correctly  
(photo or video file viewing)
SECTION 2 - TROUBLESHOOTING
Self Diagnosis
Supported model
SELF DIAGNOSIS FUNCTION
Critical voltages and circuit operations are monitored by the CPU on the 
Main Board. If an error is detected the Self Diagnosis function in the TV will 
force the TV to shut down by the CPU. The monitored circuit in which the 
fault occurred will automatically cause the CPU to blink the Standby LED 
in groups of repeating sequences. The number of times the Standby LED 
blinks indicates the possible cause of the problem.  
Not all of the available protect codes are used in every model. For example, 
models that don’t have the local dimming feature do not use the 4X blink 
error as this circuit is found in models that are backlit with fluorescent lamps. 
The information in this section provides guidance in locating the possible 
component causing the shutdown.
STANDBY LED BLINK COUNT
Standby LED
  
2 times
5 times
LED ON 0.3 sec.
LED OFF 0.3 sec.
LED OFF
3 sec.
LED DISPLAY & BLINK COUNT
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