Pioneer VSX-45TX Service Manual page 122

1
Step 8
IC503
A
pin 4
Is outputtingit ?
Yes
End
Step 9
IC501
B
pin 5
Is input signal H
?
Yes
pin 14
Is a signal
outputting it
?
Yes
pin 16
C
Is a signal
outputting it
?
Yes
IC521
pin 14
Is a signal
outputting it
?
Yes
D
pin 16
Is a signal
outputting it
?
Yes
IC541
pin 14
Is a signal
outputting it
?
Yes
E
pin 16
Is a signal
outputting it
?
Yes
IC561
F
122
1
2
No
Replace IC503
Is not
No there poor contact
of lead wire of CN102-
pin 13 ?
No
Replace IC501
No
Replace IC501
No
Replace IC521
No
Replace IC521
No
Replace IC541
No
Replace IC541
VSX-45TX
2
3
No
Check DSP CONNECTION Assy or REGULATOR Assy and so on.
pin 14
Is a signal
outputting it
?
Yes
pin 16
Is a signal
outputting it
?
Yes
End
3
4
No
Replace IC561
No
Replace IC561
4