Pioneer VSX-LX52 Service Manual page 30

1
A
Step 5: DSP input (digital)
Digital input of each CH when inputting the digital
signal with audio.
Step 5-1
IC301 (Pin 86) (or R326)
No
Is there
a data input?
(0 V ⇔ 3.3 V)
20
Yes
B
IC301 (Pin 85) (or R325)
No
Is there
a data input?
(0 V ⇔ 3.3 V)
21
Yes
Step 5-2
IC301 (Pin 98) (or R332)
No
Is there
a data input?
C
(0 V ⇔ 3.3 V)
22
Yes
IC301 (Pin 99) (or R332) Center/LFE data
(Surround L data (SACD))
No
Is there
a data input?
(0 V ⇔ 3.3 V)
22
Yes
IC301 (Pin 100) (or R332)
D
No
Is there
a data input?
(0 V ⇔ 3.3 V)
22
Yes
Step 5-3
IC301 (Pin 89) (or R327)
No
Is there
a data input?
E
(0 V ⇔ 3.3 V)
23
Yes
IC301 (Pin 134) DSP1MCLK
No
Is there
a data input?
(0 V ⇔ 3.3 V)
24
Yes
F
30
1
2
LFE data (SACD)
Center data (SACD)
Surround L/R data
(Front R data (SACD))
Surround Back L/R data
(Surround R data (SACD))
Check the HDMI block, and the parts
and patterns in the path.
DSP0MCLK
2
3
IC301 (Pin 93) (or R330)
Is there
a data input?
(0 V ⇔ 3.3 V)
25
Yes
IC301 (Pin 97) (or R332)
Is there
a data input?
(0 V ⇔ 3.3 V)
22
Yes
When the source is SACD, go to Step 6.
When the source is others, go to Step 5-4.
Step 5-4
IC301 (Pin 94) (or R331) S3LRCK
Is there
a data input?
(0 V ⇔ 3.3 V)
26
To Step 6
VSX-LX52
3
4
S3BCK
No
Front L/R data
(Front L data (SACD))
No
No
• When the USB is input, check the IC1300
and IC800, and the parts and patterns in
the path.
• When the HDMI I2S or HDMI SACD is input,
check the HDMI block, and the parts and
patterns in the path.
• When the COAX, OPT or HDMI SPDIF is
input, check the parts and patterns in the
path.
4