Pioneer VSX-1017AV-K Service Manual page 49

5
C
SY IN
CN1002 (Pin 5)
a
Diagnose between the
No
Is there a
BRIDGE 1-L Assy and
Y signal?
S. VIDEO Assy.
Yes
SC IN
CN1002 (Pin 7)
a
Diagnose between the
No
Is there a
BRIDGE 1-L Assy and
C signal?
S. VIDEO Assy.
Yes
Note:
Check is unnecessary because component
input does not convert it.
Step 3-3: Reset
CN1001 (Pin 8) XVCRST
A
No
Diagnose between the
Is the voltage
BRIDGE 1-L Assy and MAIN Assy.
"H" (5 V)?
Yes
Step 3-4: I2C
VCSDA
CN1001 (Pin 6)
A
Does
No
a signal output in
Diagnose between the
constant period
BRIDGE 1-L Assy and MAIN Assy.
(0 to 5 V)
?
Yes
VCSCL
CN1001 (Pin 7)
A
Does
No
a clock output in
Diagnose between the
constant period
BRIDGE 1-L Assy and MAIN Assy.
(0 to 5 V)
?
Yes
Q451
VCSDA
d-1
Is there
No
Check the Q451.
a same signal as
VCSDA (0 to
If Q451 is failure, replace Q451.
3.3 V)?
Yes
5
6
Is there
a same signal as
VCSCL (0 to
Step 3-5: VIDEO CLK, DATA
IC701 (Pin 48)
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?
IC701 (Pin 33)
Is there a
Y signal?
VSX-1017AV-K
6
7
Q451 VCSCL
d-2
No
Check the Q451.
If Q451 is failure, replace Q451.
3.3 V)?
Yes
LLC1
e
Check the parts and patterns in
No
the path (IC401).
If IC401 is failure, replace IC401.
Yes
P8 to P15
f
Check the parts and patterns in
No
the path.
If IC401 is failure, replace IC401.
Yes
DACA
g-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
g-2
Check the parts and patterns in
No
the path.
If IC701 or R741 or R742 or Q741
is failure, replace it.
Yes
D
7
8
A
B
C
D
E
F
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