Pioneer VSX-1017AV-K Service Manual page 42

1
A
IC952 (Pin 14)
A
Do
No
convert 3 V into
5 V for pin 6
input?
Yes
IC952 (Pin 13)
Do
No
convert 3 V into
5 V for pin 7
B
input?
Yes
To Step 5
Step 5: X'tal
IC802 (Pin 2)
Is there
No
a 24.576 MHz
C
output?
Yes
IC802 (Pin 7)
Is there
No
a 24.576 MHz
output?
Yes
IC802 (Pin 5)
D
Is there
No
a 24.576 MHz
output?
Yes
To Step 6
E
F
42
1
2
Replace IC952.
Replace IC952.
Replace IC802 or X801.
Check the path to pin 45 of IC801.
Replace IC802.
Check the path to pin 30 of IC601.
Replace IC802.
VSX-1017AV-K
2
3
Step 6: ROM
CS#
IC851 (Pin 1)
IC851 (Pin 2) SO (DATA out)
IC851 (Pin 5) SI (DATA in)
SCK (Clock in)
IC851 (Pin 6)
Is there
movement (0 V ⇔
No
3.3 V) when turned the
MCACC on, and does
movement stop within
3 sec.?
Yes
IC801 (Pin 70) BUSY
Is the
voltage output about
No
3.3 V during the operation
mentioned
above?
Yes
Is the
voltage output about
No
0 V after the operation is
completed mentioned
above?
Yes
To Step 7
Step 7: DSP output (digital)
Digital output when indicated each CH.
SurroundBack L/R data
IC801 (Pin 4)
No
Is there
Replace IC801.
a data output?
(0 V ⇔ 3.3 V)
Yes
IC801 (Pin 5) Center/LFE data
No
Is there
Replace IC801.
a data output?
(0 V ⇔ 3.3 V)
Yes
Surround L/R data
IC801 (Pin 6)
No
Is there
Replace IC801.
a data output?
(0 V ⇔ 3.3 V)
Yes
IC801 (Pin 7) Front L/R data
No
Is there
Replace IC801.
a data output?
(0 V ⇔ 3.3 V)
Yes
To Step 8
3
4
Replace IC851.
Replace IC801.
Replace IC801.
4