6-11
END
Failure point
1) Check +5V ok?
2) Check IC08 ok?
3) Check the value of R198, R199.
NO
YES
Is C79 “+” approximately 3.5V?
CONTNUE
Failure point
1) Check +5V ok?
2) Check IC31 ok?
3) Check the value of R80, R218.
NO
YES
Is C65 “+” approximately 3.5V?
Is C172 “+” approximately 3.5V?
(Digital signal input and change to digital
source when input analog at the same time)
Failure point
Check the following parts:
D115 (1N4004),D116(11DQ06),Q10,R145,R146
NO
YES
Check the power of IC18 pin5 and pin6 is
under 1V. (When system is into powe
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