Pioneer VSX-2016AV-S Service Manual page 212

1
QQ
3 7 63 1515 0
A
Check the following points when the source is
L
compression or DVD-A.
IC401 (Pins 20,19) CO, SWO
Is there a
Check the parts and patterns
No
analog audio output
(short-circuit) in the path including
(with Cch source)?
the DSP assy and others.
Yes
IC401 (Pins 18,17) SBLO, SBRO
B
Is there a
Check the parts and patterns
No
analog audio output
(short-circuit) in the path including
(with SBch source)?
the DSP assy and others.
Yes
Is
No
there a analog Check the parts and patterns
audio output in
in the path on the DSP assy.
CN402?
Yes
C
Is not
No
Replace CN402.
there poor contact
in CN402 ?
Yes
TE
L 13942296513
Check the analog signal path
in the main unit.
Step 8: 1st DSP
D
D1RST3
CN951 (Pin 23)
No
Is the voltage
Check the path to the microcomputer.
3.3 V?
Yes
IC101 (Pin 121)
No
Check the parts and patterns
Is the voltage
E
in the path.
3.3 V?
Yes
Is the
voltage of D1RST3
No
maintained in 3.3V?
(Does it fall to become
0V periodically?)
www
F
212
1
http://www.xiaoyu163.com
2
No
Replace IC401.
No
Replace IC401.
It is likely a Boot Error.
(It is very difficult to diagnose which
peripheral part of the DSP is in failure.)
x ao
y
. i
VSX-2016AV-S
2
http://www.xiaoyu163.com
3
8
IC101 (Pin 15) DIREQ3
Does the
voltage become
3.3 V for a moment
when the input stream
is changed?
Yes
CN951 (Pin 21)
Does the
voltage become
3.3 V for a moment
when the input stream
is changed?
Yes
CN951 (Pin 22) D1CS3
Does the
voltage become
0 V for a moment
Q Q
when the input stream
3 6 7 1 3
is changed?
Yes
IC101(Pin 122)
Does the
voltage become
0 V for a moment
when the input stream
is changed?
Yes
CN951 (Pin 12) DSCLK3
Is the clock
signal output while the
voltage at DICS3
is 0 V?
Yes
IC101 (Pin 125)
Is the clock
signal output while the
voltage at DICS3
u163
is 0 V?
.
Yes
M
3
4
2 9 9 4 2 8
No
The 1st DSP or the communication
path is in failure.
No
Check the parts and patterns
in the path.
No
Check the path to the
microcomputer.
1 5 0 5 8 2 9 9 4
No
Check the parts and patterns
in the path.
For the following diagnosis, a digital
oscilloscope must be used.
No
Check the path to the
microcomputer.
m
No
Check the parts and patterns
in the path.
co
4
9 9
2 8 9 9