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5-13
Is each power supplied to Audio board?
CN001 24pin -12V
CN001 22pin +12V
CN001 20pin +6V
CN001 18pin +3V
Yes
Yes
Yes
No
No
Check the power circuits on Audio board
IC003 INPUT pin 12V
IC002 INPUT pin 12V
IC001 INPUT pin -12V
Check the outputs of each Reg IC
IC003 OUTPUT pin 5V
IC002 OUTPUT pin 10V
IC001 OUTPUT pin -10V
Check the output of IC006, 007, 008
Check the output and peripheral circuits of IC009,
010, 011
Check the circuits on input side of IC001, 002, 003
Check the circuits on output side of IC001, 002, 003
Audio Section
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299