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Trouble Shooting Chart
Oscillation from Microphone
Solution: replace U601
Solution: Replace C609
Solution: repair the faulty part
GO
NO
YES
NO
YES
NO
Feedback-Oscillation when switch
the Microphone output
Check point: the pin 2 of U601
on echo board
Observe: check the voltage is
Check point: Capacitors C605
to C610 at U601
Observe: check if there is any
poor soldering or short circuit
Check
point: capacitors
C602 to C604 at U601
Observe: check if there is
any poor soldering or short
circuit
4-10
Содержание DVD590M
Страница 30: ...FRONT BOARD Top Side 7 3 7 3 FRONT BOARD Bottom Side ...
Страница 35: ...KARAOKE ECHO BOARD 8 4 KARAOKE AMPLIFIER BOARD 8 4 ...
Страница 39: ...POWER AV BOARD 9 3 9 3 ...
Страница 41: ...MAIN ENCASING EXPLODED VIEW 10 1 ...
Страница 43: ...Version 1 0 Initial release REVISION LIST 11 1 ...