Pioneer VSX-2016AV-S Service Manual page 203

5
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3 7 63 1515 0
C
CN901 (Pin 10)
Is the
voltage of analog
power 5 V?
Yes
IC481 (Pin 6)
Is the voltage
5 V?
Yes
IC401 (Pins 14,28) D/A Converter
Is the voltage
5 V?
Yes
TE
L 13942296513
To Step 3
Step 3: Operating Master Clock
IC101 (Pin 142)
Is there
an operating master
clock signal
(20 MHz)?
Yes
IC201 (Pin 45)
Is there
an operating master
clock signal
(20 MHz)?
Yes
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To Step 4
.
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• : KUXJ and KUXJCA types only
Analog 5 V input
Is there
No
No
any loose connection
at pin 10 of
CN901?
Replace CN901.
Yes
Check the power output
of the main unit.
A/D Converter
No
Check the parts and patterns
in the path.
No
Check the parts and patterns
in the path.
OSC1
Is there
No
an operating master No
clock signal(20 MHz)
at IC551-pin 5?
Replace IC551
or X551.
Yes
Check the parts and patterns
in the path.
OSC2
Is there
No
an operating master No
clock signal(20 MHz)
at IC551-pin 7?
Replace IC551
or X551.
Yes
Check the parts and patterns
in the path.
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Step 4: Audio Clock (Until Switch)
• When a sound is not out with the digital (COAX, OPT IN)
signal input.
• When a sound is not out with the analog signal input.
• When a sound is not out with the HDMI. (It is assumption
that failure diagnosis of HDMI assy completed)
When the source is DVD-A or PCM96k
When the source is compression or less than PCM48k
• When a sound is not out with the XM Radio.
Step 4-1: When a sound is not out with the digital
(COAX, OPT IN) signal input
Check that changes by pulling out and inserting the
digital input lines. (Function is able to change the
assignment. Therefore it is not specified.)
IC301 (Pin 42)
Can
observe digital
signal?
(1.65 V center, amplitude more than 0.2 Vp-p)
Yes
Q Q
3 6 7 1 3 1 5
IC301 (Pin 44)
Can
observe digital
signal?
(1.65 V center, amplitude more than 0.2 Vp-p)
Yes
IC301 (Pins 1,3,5)
Can
observe digital
signal?
(0 V ⇔ 4 V)
Yes
IC301 (Pin 7)
Can
observe digital
signal?
(0 V ⇔ 4 V)
Yes
co
D
.
VSX-2016AV-S
7
8
9 4 2 8
→ Go to Step 4-1
→ Go to Step 4-2
→ Go to Step 4-3-1
→ Go to Step 4-3-2
→ Go to Step 4-4
COAX (Under side)
No
Check the parts and patterns
in the path from the COAX terminal.
0 5 8 2 9 9 4 2 8
COAX (Upper side)
No
Check the parts and patterns
in the path from the COAX terminal.
REAR OPT IN (3 inputs)
No
Check the parts, patterns and FFC
in the path from the OPT IN terminal.
FRONT OPT IN
No
Check the parts and patterns
in the path from the FRONT IN Assy.
m
9 9
A
B
C
9 9
D
E
F
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