31
VSX-LX52
5
6
7
8
5
6
7
8
A
B
C
D
E
F
Step 6: DSP output (digital)
DAC Buffer
Digital output of each CH when inputting the digital
signal with audio.
Yes
Center/LFE data
No
Is there
a data output?
Yes
Surround L/R data
No
Is there
a data output?
Yes
Front L/R data
No
Is there
a data output?
(0 V
⇔
3.3 V)
(0 V
⇔
3.3 V)
(0 V
⇔
3.3 V)
Yes
Surround Back L/R data
No
Is there
a data output?
(0 V
⇔
3.3 V)
IC301 (Pin 123) (or R348)
IC301 (Pin 124) (or R348)
IC301 (Pin 125) (or R348)
IC301 (Pin 122) (or R348)
IC301 (Pin 123) (or R348)
IC301 (Pin 124) (or R348)
IC301 (Pin 125) (or R348)
IC301 (Pin 122) (or R348)
IC452 (Pin 16) (or R459)
IC452 (Pin 13) (or R458)
IC452 (Pin 11) (or R458)
Digital output of each CH when inputting the digital signal
(-
∞
dB (no audio)).
Replace IC301.
There is a possibility
of the Boot error.
(Identification of the
defective part near
DSP is extremely
difficult.)
No
Yes
Is the
voltage of
XDSP1RST at 3.3 V?
(Does it drop to 0V
periodically?)
Yes
Replace IC301.
Surround L/R data
No
Is the output
0 V fixing?
Replace IC301.
Yes
Center/LFE data
No
Is the output
0 V fixing?
Surround Back L/R data
Yes
Replace IC301.
Front L/R data
No
Is the output
0 V fixing?
Yes
Replace IC301.
No
Is the output
0 V fixing?
DA2MCLK (Master clock)
Yes
Replace IC452.
No
Is there
a master clock
output?
Check that the clock signal is output.
(0 V
⇔
3.3 V)
DA2BCK (Bit clock)
Yes
Replace IC452.
No
Is there
a bit clock
output?
(0 V
⇔
3.3 V)
(0 V
⇔
3.3 V)
DA2LRCK (LR clock)
Yes
Replace IC452.
No
Is there
a LR clock
output?
To Step 7
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