Pioneer VSX-94TXH Service Manual page 33

5
QQ Step 4: Audio Clock
3 7 63 1515 0
N
CN401 (Pin 12)
Is there
a master-clock
signal(24.576
MHz)?
Yes
O
IC401 (Pins 9, 13)
Is there
a master-clock
signal(24.576
MHz)?
Yes
q
R111
Is there
a master-clock
signal(24.576
MHz)?
Yes
r
IC201 (Pin 73)
Is there
a master-clock
signal(24.576
MHz)?
TE
L 13942296513
Yes
P
CN401 (Pin 4)
Is there
a bit clock?
Yes
Q
IC401 (Pin 1)
Is there
a bit clock?
Yes
R
R408
Is there
a bit clock?
Yes
www
.
5
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6
MCK
No
Check the output from the
DIGITAL MOTHER Assy.
No
Check the resistors and patterns
in the path.
No
Replace IC401 or check the signal
path.
No
Replace IC401 or check the signal
path.
SCK
No
Check the output from the
DIGITAL MOTHER Assy.
No
Check the resistors and patterns
in the path.
No
Replace IC401.
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6
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7
2 9
8
S
CN401 (Pin 2)
Is there
an L/R clock?
Yes
T
IC401 (Pin 4)
Is there
an L/R clock?
Yes
U
R407
Is there
an L/R clock?
Yes
V
CN401 (Pin 6)
Are there
data coming
in?
Q Q
3 6 7 1 3 1 5
Yes
s
R114
Are there
data coming
in?
Yes
To Step 5
co
.
VSX-94TXH
7
8
9 4 2 8
LCK
No
Check the output from the
DIGITAL MOTHER Assy.
No
Check the resistors and patterns
in the path.
No
Replace IC401.
DATA
No
Check the output from the
DIGITAL MOTHER Assy.
0 5 8 2 9 9 4 2 8
No
Check the resistors and patterns
in the path.
m
9 9
A
B
C
9 9
D
E
F
33
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