Sony XBR-55X850D Service Manual page 34

FLOW
2-4. LED BLINKING 5X (PANEL COMMUNICATION ERROR)
Case: BM1 + DPS structure
5-times blinking
Check
"+12.5V_TCON" at
CN401 #4 (or C493)
on the DPS-Board
OK
Replace the Harness
Between G-Board
and DPS
NG
Replace
the V-By-One FFC
NG
XBR-55X850D/855D/857D, 65X850D/855D/857D, 75X850D/855D/857D
NG
OK
Replace G-Board
NG
Symptom
improve
Harness is
suspicious
Symptom
improve
V-By-One FFC
is suspicious
G-Board is Change
suspicious DPS
DPS is
suspicious
NG
Change
Panel (or T-con)
Symptom Symptom
improvement improvement
Panel (or T-Con) is
suspicious
TROUBLE SHOOTING
34