Sony XR-55X90K Service Manual page 54

TROUBLESHOOTING
2.5 LED Blinking : 5x Blinking (Panel ID Read Error)
5x blinking
Check
NG
"12.5V_TCON"
on T-con board
OK
Symptom
Replace the Harness
recovers
from Power board
to Main board
NG
Symptom
recovers
Replace
the V-By-One FFC
NG
OK
Replace
Power Board NG
Power Board
NG
Harness NG
V-By-One
FFC NG
NG
Replace Replace
Panel (T-con)
Main Board
Symptom
recovers
Main Panel
(T-Con) NG
Board NG
Symptom
recovers
54
SYS SET