Sony KD-49X9 F Series Service Manual page 29

2.3 LED BLINKING 4x (LED Voltage Error)
BM2A
4-time blinking
(LED Voltage)
Check "LD_ERR_DET" Voltage
at CL4458 on BM2A Board
Low
BM2A Board
Detail of 4x LED Blinking
Error Number of STBY
Item LED flashing
Trinity LD_ERR
3
BCM_ERR
Trinity3 Board: BM2A
High
Replace LD board
OK
LD Board
Segment Description
4 CU LED voltage error detection with LD IC
4 CU Only LD IC initialize or I2C communication error detection.
NG
Panel
(Supplementary
29
information)