KDL-40HX701, KDL-46HX701, KDL-55HX701 - Sony TV Service Manual (repair manual). Page 12

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KDL-40HX701/46HX701/55HX701
 
 
7
SELF DIAGNOSIS FUNCTIONS
SELF DIAGNOSIS FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY LED will automatically begin to 
fl
 ash. The number 
of times the LED 
fl
 ashes translates to a probable source of the problem. A de
fi
 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.
DIAGNOSTIC TEST INDICATORS
When an error occurs, the STANDBY LED will 
fl
 ash 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 
fi
 rst 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 .
Diagnostic Item
Diagnostic Item
Description
Number of times Standby 
LED blinks
Possible Location
MAIN_POWER
Main Power Over Voltage Protection
2
BAL Board
G2HEW (Power) Board (KDL-40HX701 Only)
GD2W (Power) Board (KDL-46HX701 Only)
G5EW (Power) Board (KDL-55HX701 Only) 
DC_ALERT
DC Alert
DTT-WDT
DTT Error
AUD_PROT
Audio Error Detection
BALANCER
Panel Balancer Error
4
BAL Board
D1 Board (KDL-55HX701 Only)
TCON ERR
TCON Error
HFR ERR
HFR Error
P_ID_ERR
Panel ID NVM Error
BACKLITE
Backlight Error
6
BAL Board
LCD Panel
TEMP_ERR
Temperature Error
7
BAL Board
FAN_ERR
Fan Error (Not Used in these models)
NA
NA
RGB_SEN
RGB Sensor ACK Error
NA
NA
3
5
BAL Board
G2HEW (Power) Board (KDL-40HX701 Only)
GD2W (Power) Board (KDL-46HX701 Only)
G5EW (Power) Board (KDL-55HX701 Only) 
D1 Board (KDL-55HX701 Only)
BAL Board
LCD Panel
TCON Control MT Board
Self Diagnosis
Supported model
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