Sony KD-43X85K - Slide Number 53

53
SAFETY NOTES SELF DIAGNOSIS FUNCTION TROUBLESHOOTING SERVICE ADJUSTMENT DIAGRAM HANDLING GUIDE
2.2 LED Blinking: 3x (AU ERR)
TROUBLESHOOTING
Replace
Power-Board orLD-Board or
AC Adapter
3x blinking
(AUD_ERR)
Replace
Main Board
Yes
Main Board
Speaker Harness
Speaker
Power-Board or
LD-Board or
AC Adapter
Replace
Speaker
Measure the Speaker Unit
impedance by multi-meter
More than 10Ω or
Less than 3.6Ω ?
Main Board
Audio Amp PVDD-GND short?
Main-Board
Audio Amp DVDD-GND short?
Main-Board
Audio Amp Fuse broken?
Main-Board
Audio Amp PVDD OK?
Before enter 3x blinking,
Check voltage supplied to Main-Board
Audio Amp PVDD
for that moment.
Yes
Yes
Yes
No
No
No
TV
Power OFF
check
TV
Power ON
check
OK
Measure the Speaker Harness
connectivity by multi-meter
No connectivity? or
Shorted to GND/Chassis?
Replace
Speaker Harness
No
OK
OK
OK
NG
NG
NG
Yes
Yes
No
SYSSET
2022/04/1901:21:05(GMT+09:00)