Pioneer VSX-817-K, Руководство по обслуживанию

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VSX-917V-K
115
5 6 7 8
5 6
7
8
C
D
F
A
B
E
C
D
Yes
Yes
LLC1
Check the parts and patterns in
the path (IC401).
If IC401 is failure, replace IC401.
Check the parts and patterns in
the path.
If IC401 is failure, replace IC401.
IC701 (Pin 48)
e
Is there a clock
(27 MHz)?
No
Yes
DACA
Check the parts and patterns in
the path.
If IC701 or R731 or R732 or Q731
is failure, replace it.
IC701 (Pin 35)
Is there a
composite
signal?
No
P8 to P15
IC701 (Pins 2 to 9)
f
Is there a data?
No
Yes
XVCRST
Diagnose between the BOARD
TO BOARD Assy and MAIN
Assy.
Diagnose between the BOARD
TO BOARD Assy and MAIN
Assy.
Diagnose between the BOARD
TO BOARD Assy and MAIN
Assy.
CN318 (Pin 2)
A
Is the voltage
"H" (5 V)?
No
g-1
Yes
CVBS OUT
Check the parts and patterns in
the path.
If Q731 or R733 is failure,
replace Q731 or R733.
CN316 (Pin 21)
Is there a
composite
signal?
No
a
Yes
Yes
XTAL
Check the X401 or IC402.
If X401 or IC402 is failure,
replace X401 or IC402.
IC401 (Pin 22)
c
Is
there the CLK
(28.63636MHz)
?
No
Step 3-3: Reset
X'tal
Step 3-4: I2C
Step 3-5: VIDEO CLK, DATA
Step 3-6: Video Output
Yes
DACB
Check the parts and patterns in
the path.
If IC701 or R741 or R742 or Q741
is failure, replace it.
IC701 (Pin 33)
Is there a
Y signal?
No
g-2
No
CN318 (Pin 4)
VCSDA
A
Does
a signal output in
constant period
(0 to 5 V)
?
Yes
No
CN318 (Pin 3)
VCSCL
A
Does
a clock output in
constant period
(0 to 5 V)
?
VCSDA
No
R452
d-1
Is there
a same signal as
VCSDA (0 to
3.3 V)?
Yes
Check the Q451.
If Q451 is failure, replace Q451.
Check the Q451.
If Q451 is failure, replace Q451.
VCSCL
No
R454
d-2
Is there
a same signal as
VCSCL (0 to
3.3 V)?
Yes
C414
Is there a
Y signal?
No
SY IN
Yes
b-2
Diagnose between the BOARD
TO BOARD Assy and S. VIDEO
Assy.
C420
Is there a
C signal?
No
SC IN
Yes
b-3
Diagnose between the BOARD
TO BOARD Assy and S. VIDEO
Assy.
Note:
Check is unnecessary because component
input does not convert it.