Pioneer VSX-03TXH Service Manual page 33

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Step 7-4: Switch
Check that the data is output. (Sch and Cch Signal having)
IC205 (Pin 6)
Is there
a data
output?
Yes
IC205 (Pin 8)
Is there
a data
output?
Yes
To Step 8
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L 13942296513
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SDTI (Data)
No
(0 V ⇔ 3.3 V)
CDTI (Data)
No
(0 V ⇔ 3.3 V)
Is the
voltage Pin 4 /
Pin 10 of IC205
at 3.3V?
Yes
Replace IC205.
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8
Step 7-5: Switch (SACD only)
Check that the data and clock signals are output.
IC203 (Pin 4)
Is there
a data
output?
IC203 (Pin 7)
Is there
a clock
output?
Check that the data signal is output.
IC205 (Pin 3)
Q Q
3 6 7 1 3
Is there
a data
output?
IC205 (Pin 11)
Is there
a data
output?
To Step 8
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VSX-03TXH
6
7
2 9 9 4 2 8
DSDFL (DSD data)
No
(0 V ⇔ 3.3 V)
Yes
BCKI (DSD clock)
No
(0 V ⇔ 3.3 V)
Yes
Is the
voltage Pin 1
of IC203 at
5 V?
Check the path
Yes
between pin 1 of IC203
and microcomputer.
Replace IC203.
DSDFR (DSD data)
1 5 0 5 8 2 9 9 4
No
(0 V ⇔ 3.3 V)
Yes
DSDSL (DSD data)
No
(0 V ⇔ 3.3 V)
Yes
Is the
voltage of pin 1/
pin 13 of IC205
at 0 V?
Yes
Replace IC205.
m
co
7
8
9 9
A
B
No
C
2 8 9 9
D
No
Check the path
between Pin 1 /
Pin 13 of IC205
and microcomputer.
E
F
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