LG LF300CP(LP-C303R20) - Manual (Page 37)

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4) Remote control does not operate.
YES
NO
YES
NO
YES
NO
YES
NO
Is the battery of remote
controller normal?
Check the connector.
CN-Disp1
Is the CN-Disp1
connector normal?
Does the operation
of remote controller
properly?
Is the Pre-amp of
display normal?
Replacement MICOM
Replacement preamp assy
Replacement remote-controller
Replacement battery