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5. Trouble Shooting
5-1 Logic Section
5-1-1 No Power
Press PWR button
"H" level outputted
from U406
Pin 2 ?
U408 Pin 5=2.8V?
U409 Pin 2=2.8V?
U406 Pin 3=2.8V?
END
Trouble shooting
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
NO
YES
YES
YES
YES
Check Battery Q407 and its neighboring circuits
Check U408 and its neighboring circuits
Check U409 and its neighboring circuits.
Check U411, U412, U413, U414
and its neighboring circuits.
5-1
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