B
NO
Mute relay open
After 5-8S?
YES
NO
Play 1Khz sinew ave track
Line Output correct?
YES
F i n i sh
TROUBLE SHOOTING B
5VR correct?
YES
Check Q1007
Apply signal to coax or optical
Output correct?
YES
Check U1006, U1008, U1012
Check J1003
Check Y1004, Y1005, U1000
Check driver on computer
8
NO
Check 9VD
NO
Check U1021