Read Sony KDL-32R400A / KDL-32R420A / KDL-40R450A / KDL-40R470A / KDL-46R450A / KDL-46R470A Service Manual online
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3-5. TV COMMANDER BUTTONS MALFUNCTION
TROUBLE SHOOTING
1) TV button malfunction
KDL-32R400A/420A, 40R450A/470A, 46R450A/470A(PA)
Button malfunction
on the TV
Replace the harness
between Main board
and Key module
Key module issue
Harness issue
Change
Key module
Change
Main board
NG
NG
Symptom
improvement
Symptom
improvement
OK
OK
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