Read Sony KD-55X9000A Service Manual online
HUS button
malfunction
malfunction
Check Harness on HUS and
B* Board properly connected
Check Harness pin Assignment
According to circuit.
According to circuit.
OK
OK
Change B* Board
NG
NG
Probe at Key_AD line and
check the signal
check the signal
Loose harness Æ
connect properly
connect properly
Change Harness
Change
HUS
HUS
NG?
OK
3-5. BUTTONS MALFUNCTION
1) Side button malfunction
KD-55/65X9000A(CH)
121
TROUBLE SHOOTING
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