A
Yes
5Vd power
supply is correct?
No
Check U608 input supply
Check Q616,Q617
Check D604,F606
10vv,-5vv power
supply is correct?
No
Check U603 input supply
Check Q686,Q684,Q682
Check D683,F681,F682
8vd power supply
is correct?
No
Check U604 input supply
Check Q609,Q607
Check D681,F605
End
Yes
Yes
Yes
3-3