Onkyo HT-S3900 Service Manual page 19

1
No Sound 3/6
1 2
D
C
B
A
1 2
1
2 3
3
No
Check MAIN ASSY
CN8 pin 4 (+12V),
pin 1 (-12V)
Yes
Check CP15 pin 8
(VOL_CLK), pin
9(VOL_DATA)
Yes
Replace MAIN ASSY or
repair IC1009 and its
peripheral circuit
2 3
4
No Problem /
No
Check MAIN ASSY
CP110 - BRIDGE
ASSY CN110
[A]
Check the data signals at the following locations
No
VOL_CLK pin 7, VOL_DATA pin 8
CN208(CPU ASSY) - CP15(MAIN ASSY)
4
5
Trouble Shoot
Replace MAIN ASSY
No Damage
MAIN ASSY CN2
5
6
D
C
B
A
HT-R397
6