Sony KD-43X85K Service Manual page 44

TROUBLESHOOTING
2.1 LED Blinking: 3x (DC ALERT)
3-time blinking
(DC Alert)
Check "12.7V_MAIN"
at pin 5,6,7,8 of CN1700 on
BM5A
BM5A board,
Voltage = 12.2~13.2V?
NG
Power Board
Error Item Number of STBY LED flashing
DC_ALERT
AUD_ERR
OK
Check "5V_MAIN"
at JL601 on BM5A board,
4.75V < Voltage < 5.25V?
NG
IC600, etc
(BM5A Board)
Description
3 Main board 5V power rail monitoring
3 Audio amp error detection
OK
Check "5V_DET"
at CL1247 on BM5A board,
0.77V < Voltage < 1.11V?
NG
R1284, R1285, etc
(BM5A Board)
OK
Check Audio
Error
44
SYS SET