Pioneer VSX-2016AV-S Service Manual page 212

1
A
L Check the following points when the source is
compression or DVD-A.
IC401 (Pins 20,19) CO, SWO
Is there a
No
analog audio output
(with Cch source)?
Yes
IC401 (Pins 18,17) SBLO, SBRO
B
Is there a
No
analog audio output
(with SBch source)?
Yes
Is
No
there a analog
audio output in
CN402?
Yes
C
Is not
No
there poor contact
in CN402 ?
Yes
Check the analog signal path
in the main unit.
Step 8: 1st DSP
D
D1RST3
CN951 (Pin 23)
No
Is the voltage
3.3 V?
Yes
IC101 (Pin 121)
No
Is the voltage
E
3.3 V?
Yes
Is the
voltage of D1RST3
No
maintained in 3.3V?
(Does it fall to become
0V periodically?)
F
212
1
2
Check the parts and patterns
(short-circuit) in the path including
the DSP assy and others.
No
Replace IC401.
Check the parts and patterns
(short-circuit) in the path including
the DSP assy and others.
No
Replace IC401.
Check the parts and patterns
in the path on the DSP assy.
Replace CN402.
Check the path to the microcomputer.
Check the parts and patterns
in the path.
It is likely a Boot Error.
(It is very difficult to diagnose which
peripheral part of the DSP is in failure.)
2
3
IC101 (Pin 15)
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)
Does the
voltage become
0 V for a moment
when the input stream
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)
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
is 0 V?
Yes
M
VSX-2016AV-S
3
4
DIREQ3
No
The 1st DSP or the communication
path is in failure.
No
Check the parts and patterns
in the path.
D1CS3
No
Check the path to the
microcomputer.
No
Check the parts and patterns
in the path.
For the following diagnosis, a digital
oscilloscope must be used.
DSCLK3
No
Check the path to the
microcomputer.
No
Check the parts and patterns
in the path.
4