4. TROUBLE SHOOTING
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Only for training and service purposes
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START
Is the TP2 (JACK DETECT)
LOW?
Check the state of soldering TP1
Earphone working well
No
Check connected Properly?
Please, Reconnect The earphone
No
Can you hear
the sound?
Change the earphone and try again
No
Yes
Yes
Yes
Yes
Can you hear
Your voice?
Change the earphone and try again
No
Set the test instrument or
Play Continuous wave
Set the test instrument
to echo mode
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