Sony KDF-55WF655K, Service Manual

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KDF-55WF655K/60WF655K
RM-KD001 RM-KD001
SECTION 1
SELF DIAGNOSIS FUNCTION
Diagnostic Item Number of times
Description /STANDBY or LED Probable Cause Detected Symptoms
lamp flashes
Lamp cover error 3 times - Lamp cover is not fastened securely - No picture/No sound
- Fan1-4 Power is not supplied.(G2 board)
Fan error 4 times - Fan connector is not seated securely - No picture/No sound
- Fan caught wires or harnesses
- Internal temperature is too high
Temp error 4 times - IIC-E line connector is not seated properly - No picture/No sound
(WE:H3 board, WF/XS:H4 board)
Lamp driver error 5 times - Lamp driver defect - No picture/No sound
Low B error 6 times -No “DD 6V “ output (G1 board) - No picture/No sound
- Short-circuit of Audio power supply line
(KD board, G1 board)
Audio error 7 times
- Blowout of a fuse
- No picture/No sound
(PS4702,PS4703,PS4704 on KD board)
- IC failure
(IC4703,IC4708,IC4710 on KD board)
D-OVP error 8 times
- Overvoltage of +3.3V or +2.5V
- No picture/No sound
(A board, B board)
ATSC-OVP error 10 times
-No “DTL MODULE 5V “ output
- No picture/No sound
(G1 board, G2 board)
Lamp error -LED is ON. - Lamp is dead - No picture/No sound
The units in this manual contain a self-diagnostic function. If an error occurs, the /STANDBY or LED will automatically begin
to flash.
The number of times the LED fl ashes translates to a probable source of the problem. A defi nition of the /STANDBY or LED
flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom is diffi cult to reproduced
use the Remote
Commander to display the record that is stored at the internal NVM to specify the cause of the failure.
Diagnostic Test Indicators
When an error occurs, the /STANDBY or 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. If the errors occur simultaneously, the one that
corresponds to the fewest flashes is identifi ed fi rst.
Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.