Read Sony KD-55X8500A (serv.man2) Service Manual online
3-5. SIDE BUTTONS MALFUNCTION
KD-55X8500A/65X8500A(CH)
115
TROUBLE SHOOTING
HUS button
malfunction
Check Harness on HUS and
B* Board properly connected
Check Harness pin Assignment
According to circuit.
OK
OK
Change B* Board
NG
NG
Probe at Key_AD line and
check the signal
Loose harness
connect properly
connect properly
Change Harness
Change HUS
NG?
OK
Click on the first or last page to see other KD-55X8500A (serv.man2) service manuals if exist.