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