Pioneer VSX-1016V-K Service Manual page 213

5
C
Step 3-3: Reset
CN1001 (Pin 8) XVCRST
b
No
Diagnose the MAIN CONTROL
Is the voltage
Assy.
"H" (5 V)?
Yes
X'tal
IC401 (Pin 37) XTAL1
c
Is
No
Check the X401 or IC402.
there the CLK
(28.63636MHz)
If X401 or IC402 is failure,
?
replace X401 or IC402.
Yes
Step 3-4: I2C
VCSDA
CN1001 (Pin 6)
a
Does
Diagnose the MAIN CONTROL
No
a signal output in
Assy.
constant period
(0 to 5 V) If IC501 or IC401 or IC701 is
?
failure, replace it.
Yes
VCSCL
CN1001 (Pin 7)
a
Does
Diagnose the MAIN CONTROL
No
a clock output in
Assy.
constant period
(0 to 5 V)
If IC501 or IC401 or IC701 is
?
failure, replace it.
Yes
VCSDA
VCSDA
c-1
Is there
No
Check the Q451.
a same signal as
VCSDA(0 to 3.3 V)
If Q451 is failure, replace Q451.
?
Yes
VCSCL VCSCL
c-2
Is there
No
Check the Q451.
a same signal as
VCSCL(0 to 3.3 V) If Q451 is failure, replace Q451.
?
Yes
5
6
Step 3-5: VIDEO CLK, DATA
Point d
Is there a clock
(27 MHz)?
IC701 (Pins 2 to 9)
Is there a data?
Step 3-6: Video Output
IC701 (Pin 35)
Is there a
composite
signal?
CN1002 (Pin 3)
Is there a
composite
signal?
Diagnose the MAIN CONTROL
Assy or COMPOSITE Assy.
IC701 (Pin 33)
Is there a
Y signal?
CN1002 (Pin 9)
Is there a
Y signal?
Diagnose the MAIN CONTROL
Assy or S-VIDEO Assy.
VSX-1016V-K
6
7
LLC1
d
Check the parts and patterns in
No
the path (IC401).
If IC401 is failure, replace IC401.
Yes
P8 to P15
e
Check the parts and patterns in
No
the path.
If IC401 is failure, replace IC401.
Yes
DACA
i-1
Check the parts and patterns in
No
the path.
If IC701 or R731 or R732 or Q731
is failure, replace it.
Yes
CVBS OUT
a
Check the parts and patterns in
No
the path.
If Q731 or R733 is failure,
replace Q731 or R733.
Yes
DACB
i-2
Check the parts and patterns in
No
the path.
If IC701 or R741 or R742 or Q741
is failure, replace it.
Yes
SY OUT
a
Check the parts and patterns in
No
the path.
If Q741 or R743 is failure,
replace Q741 or R743.
Yes
7
8
A
B
C
D
E
F
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