Pioneer 1014TX-K - THX Select A/V Receiver Service Manual page 131

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