LG LST-5600A Service Manual page 19

Hd integrator box system
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(F) Interrupt check
YES
Logic high is input to IC101(D18) or R418?
YES
Logic high is input to IC101(W20) or
CN201(7)?
Fig.08 IC101(D18) :
No Interrupt signal
NO
NO
3-10
Check IC100, IC400
Check IC100, CN201(7)

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