Pioneer VSX-2016AV-S Service Manual page 202

1
QQ
3 7 63 1515 0
A
B
IC101 (Pin 1, etc.) 1st DSP 1.2 V
No
Check the parts and patterns
Is the voltage
in the path.
1.2 V?
Yes
2nd Block 3.3 V
IC903 (Pin 1)
B
No
Check the parts and patterns
Is the voltage
in the path.
5.2 V?
Yes
IC903 (Pin 3)
No
Is the voltage
3.3 V?
C
Yes
TE
L 13942296513
2nd DSP 3.3 V
IC201 (Pin 3,etc.)
No
Check the parts and patterns
Is the voltage
in the path.
3.3 V?
D
Yes
OSC Inverter
IC551 (Pin 8)
No
Check the parts and patterns
Is the voltage
in the path.
3.3 V?
Yes
IC291 (Pin 14) Audio MCK Buffer
E
No
Check the parts and patterns
Is the voltage
in the path.
3.3 V?
Yes
IC301 (Pins 21,38) DIR
www
No
Check the parts and patterns
Is the voltage
in the path.
3.3 V?
Yes
F
202
1
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2
• : KUXJ and KUXJCA types only
Is IC903 No
abnormally hot?
Replace IC903.
Yes
The output and GND may be short-
circuited. Check the path between
them.
x ao
y
. i
VSX-2016AV-S
2
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3
8
IC481 (Pin 7) A/D Converter
No
Is the voltage
3.3 V?
Yes
Logic IC
IC651 (Pin 16)
No
Is the voltage
3.3 V?
Yes
IC601 (Pin 16) Logic IC
No
Is the voltage
3.3 V?
Yes
XM/DT IC
IC501 (Pin 4, etc.)
Q Q
3 6 7 1 3
No
Is the voltage
3.3 V?
Yes
IC904 (Pins 1,2) 2nd Block 1.25 V
No
Is the voltage
3.3 V?
Yes
IC904 (Pin 4)
No
Is the voltage
1.25 V?
Yes
IC201 (Pin 8, etc.) 2nd DSP 1.25 V
No
u163 Is the voltage
1.25 V?
.
C
3
4
2 9 9 4 2 8
Check the parts and patterns
in the path.
Check the parts and patterns
in the path.
Check the parts and patterns
in the path.
1 5 0 5 8 2 9 9 4
Check the parts and patterns
in the path.
Check the parts and patterns
in the path.
Is IC904 No
abnormally hot?
Replace IC904.
Yes
The output and GND may be short-
circuited. Check the path between
them.
m
Check the parts and patterns
co
in the path.
4
9 9
2 8 9 9