Sangean ATS-909X - WORLD BAND RADIOS, Руководство по обслуживанию

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(4) Speaker have not voice output
NO
Check whether the speaker is normal. Change the speaker.
YES
Check whether the connect wires one
open from PCB to speaker.
NO
YES
Check whether earphone action is normal
while an earphone plug in to JK5.
Check JK5.
NO
Check the circuit of IC6 and IC7.
YES
Check the circuit of volume and tone
control VR1 and SW2.
YES
Check the preamp circuit of IC5.
YES
Check the mute circuit Q48 and Q49.
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