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10. Don't operate the external speaker out
Check the input
source?
Yes
IC100 operate
normally?
Yes
IC2001 operate
normally?
Yes
Check the external
speaker
No
Check the speaker wire.
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Only for training and service purposes
No
Check the input source.
No
Re-solder or replace the IC100.
No
Re-solder or replace the IC2001.
No
Replace the external speaker
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LGE Internal Use Only
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