Pioneer VSX-03TXH Service Manual page 40

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QQ
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A
Step 8: DSP output (digital)
Digital output of each CH when inputting the digital
signal with audio.
IC401 (Pin 125) Front L/R data
Is there No
a data output?
(0 V ⇔ 3.3 V)
Yes
B
Digital output of each CH when inputting the digital
signal (-∞ dB (no audio)).
Front L/R data
IC401 (Pin 125)
No
Is the output
Replace IC401.
0 V fixing?
C
Note:
The output confirmation during
Yes
XM HD surround shall conform
to the sequence/pin number of
Step 8 on the "trouble shooting
TE
L 13942296513
(V5select-Din)" sheet.
Check that the clock signal is output.
DAMC (Master clock)
IC501 (Pin 3)
Is there
No
a master clock Replace IC501.
output?
D
(0 V ⇔ 3.3 V)
Yes
DABC (Bit clock)
IC501 (Pin 6)
Is there
No
a bit clock Replace IC501.
output?
(0 V ⇔ 3.3 V)
Yes
DALR (LR clock)
IC501 (Pin 11)
E
Is there
No
a LR clock Replace IC501.
output?
(0 V ⇔ 3.3 V)
Yes
To Step 9
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40
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Is the
voltage of
No
DS0RST at 3.3 V?
(Does it drop to 0V
periodically?)
Yes There is a possibility
of the Boot error.
(Identification of the
defective part near
DSP is extremely
difficult.)
Replace IC401.
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y
. i
2
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8
Step 9: DAC output (analog)
Analog output of each CH when inputting the digital
signal with audio.
IC601 (Fch) (Pin 8)
Is there
a data output?
Yes
IC601 (Fch) (Pin 11)
Is there
a data output?
Yes
Analog output of each CH when inputting the digital
signal (-∞ dB (no audio)).
IC601 (Fch) (Pin 8)
Is the output
2.5 V fixing?
Yes
Q Q
3 6 7
IC601 (Fch) (Pin 11)
Is the output
2.5 V fixing?
Yes
End
u163
VSX-03TXH
3
4
2 9 9 4
Front R out
No
Replace IC601.
Front L out
No
Replace IC601.
Front R out
No
Replace IC601.
1 3 1 5 0 5 8 2 9
Front L out
No
Replace IC601.
Note:
The output confirmation during
XM HD surround shall conform
to the sequence/pin number of
Step 9 on the "trouble shooting
(V5select-Din)" sheet.
m
co
.
4
2 8
9 9
9 4 2 8 9 9