Pioneer VSX-1015-S Service Manual page 123

5
B
IN4 (CD) (pin 42)
No
Is pin 42
Replace IC501
inputting it?
Yes
Front IN (VIDEO2) (pin 7)
No
Is pin 7
Check the FRONT-IN Assy
inputting it?
and related path.
Yes
MCKO1 (pin 23)
Is master
No
clock outputting
it?
PDN (pin 31)
Yes
Is input
signal 5V?
Yes
XTO (pin 29)
Does
oscillation
stop?
Yes
LRCK (pin 24)
Is LR
No
clock outputting Replace IC601
it?
Yes
SDTO (pin 25)
Is data
No
Replace IC601
outputting
it?
Yes
BCK (pin 26)
Is bit
No
clock outputting Replace IC601
it?
Yes
End
5
6
Check the other Assy
No
(the periphery of
microcomputer)
X601 is oscillated only
at analog input.
No
INT0 (pin 36)
No
Is output
signal 0V?
Yes
Replace IC601
VSX-1015-K
6
7
Step 6: X'tal
IC802
Is
No
pin 2 20MHz
outputting
it ?
Yes
End
Step 7: DSP output (digital)
• Digital output of each channel in the digital signal
(there is a sound) input.
IC801
SurroundBack L/R data (pin 4)
Is pin 4 No
outputting it?
Yes
Center/LFE data (pin 5)
Is pin 5 No
outputting it?
Yes
Surround L/R data (pin 6)
Is pin 6 No
outputting it?
Yes
Front L/R data (pin 7)
No
Is pin 7
outputting it?
Yes
End
7
8
Replace IC802 or X801
Replace IC801
Replace IC801
Replace IC801
Replace IC801
123
8
A
B
C
D
E
F