Sony XBR-65Z9D Service Manual page 30

FLOW
2-3. LED BLINKING 4X (LED VOLTAGE ERROR AND BCM ERROR)
LED VOLTAGE ERROR
4-time blinking
"L"
Check "LD_ERR"
at R4441
on the DPA Board
"H"
4KBE SW or BM2 Board
XBR-65Z9D
Replace the
LD Board
DPA Board
OK
DPA Board
BCM ERROR
4-time blinking
NG
Ground Impedance of
Replace
BE_SCL1/SDA1_LD
R5053/R5054
on the DPA Board
OK
OK
Resistor broken
4KBE SW or BM2 Board
TROUBLE SHOOTING
OK
NG
Replace
LD board
LD board
NG
4KBE SW or BM2 Board
30