(3) Check IC804 and Surroundings
9V is supplied to IC702(8)?
YES
Analog audio signal is output from
IC702(1, 7)?
(4) Check Output Jack and Surroundings
Check Q702, Q703, Q704, Q705,
JA600 and their surroundings
NO
Check Power Supply Part
NO
Check IC702 and surroundings
3-10