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● The.soundboard.speaker.does.not.sound.loud.enough.
Possible.Cause.1
:
There.are.some.problems.with.the.sound.system.PWB.board..
Solution.1.:
Referring to 〔6〕 【B】, open the sound source unit and replace the sound
system PWB board.
Possible.Cause.2
:
This.is. as. designed.. (The. soundboard. speaker. is. an. intermediate. means. between.
headphone.and.acoustic.sound.)
Solution.1.:
If you connect the external amplifier and speaker to the LINE OUT of
controller, you will hear the sound that the amplifierr can perform.