Technics SX-KN930 - Rhythm Control and Patterns (KN920 KN1500); Tempo, Intro, Fill-in, and Ending Patterns

a
BLOCK (B) Diagram
AMPL
AMPR
FAJ
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s BASE(POWER ON/OFF CONTROL)
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HEADPHONE
m.sp AMPLIFIER EQUALIZING
1C6B,Q9,11 IC3A, IC5A
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C1
PHOTO
COUPLER
IC2
POWER
AMPLIFIER
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JK6 ;
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SP1
120m4 Q
v CN4
SP2
12cm4 Q
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JKS
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JK2
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MIDI OUT
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JK3
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MIDI. IN