Pioneer VSX-52TX Service Manual page 131

5
Step 7: ROM
QQ
3 7 63 1515 0
IC851
Slave Select (pin 1)
DATA Out (pin 2)
DATA In (pin 5)
Clock In (pin 6)
There is movement
when turned MCACC
to ON and does
movement stop
within 3 seconds?
Yes
IC801
BUSY (pin 70)
Is
about 3.3V
outputting it
during above
operation?
Yes
Is
about 0V
outputting it
after above
TE
L 13942296513
operation?
Yes
End
www
.
5
http://www.xiaoyu163.com
6
No
Replace IC851
No
Replace IC801
No
Replace IC801
x ao u163
y
i
6
http://www.xiaoyu163.com
7
Step 8: DSP output (digital)
• Digital output when indicating each channel 2 9
8
IC801
SurroundBack L/R data (pin 4)
Is pin 4
outputting it?
Center/LFE data (pin 5)
Is pin 5
outputting it?
Surround L/R data (pin 6)
Is pin 6
outputting it?
Front L/R data (pin 7)
Is pin 7
outputting it?
Q Q
3 6 7 1 3 1 5
End
co
.
VSX-52TX
7
9 4 2 8
No
Replace IC801
Yes
No
Replace IC801
Yes
No
Replace IC801
Yes
No
Replace IC801
0 5 8 2 9 9 4 2 8
Yes
m
8
9 9
A
B
C
9 9
D
E
F
131
8