Pioneer SX-LX70SW Service Manual page 32

1
A
D
IC651 (Pin 14)
Is there
No
a LR clock
input?
Yes
IC301 (Pin 26)
DIRB
B
Is there
No
a bit clock
input?
Yes
Check the parts and
patterns in the input path.
IC651 (Pin 5)
C
Is there
No
a bit clock
input?
Yes
IC3013 (Pin 9)
DAUX
Is there
No
a audio data
output?
D
Yes
IC301 (Pin 25)
DIRD
Is there
No
a audio data
output?
E
Yes
IC651 (Pin 2)
Is there
No
a audio data
input?
Yes
To Step 5-1
F
32
1
2
Is there
No
abnormality at the
parts and patterns
in the input path?
Replace IC301
or IC651.
Is there
No
a DIRB output
of IC301-pin 26
?
Replace IC301 or
Yes
IC3013 or IC651.
Is there
No
abnormality at the
parts and patterns
in the input path?
Replace IC301
or IC651.
Is the
No
voltage of IC3013-
pin 13 (PDN)
3.3 V?
Yes
Check the path to the
microcomputer.
Replace IC481.
Is there
No
abnormality at the
parts and patterns
in the output path?
Replace IC301
or IC651.
Is there
No
abnormality at the
parts and patterns
in the input path?
Replace IC301
or IC651.
SX-LX70SW
2
3
Step 4-3-1: When a sound is not out with the HDMI
(When the source is "dts HD Master
Audio", "Dolby True HD", "PCM or
LPCM at or above the sampling rate of
88.2kHz" or "LPCM Multi ch")
HDSW
IC651 (Pin 1)
No
Is the voltage
Check the path to the microcomputer.
3.3 V?
Yes
IC651 (Pin 10)
HMCK
Is there
No
abnormality at the
a master clock input
parts and patterns
(24.576 MHz)?
in the input path?
Yes
IC651 (Pin 13)
HLR
Is there
No
abnormality at the
a LR clock
parts and patterns
input?
in the input path?
Yes
IC651 (Pin 3)
HFDT
Is there
No
abnormality at the
a audio data
parts and patterns
input?
in the input path?
Yes
IC651 (Pin 6)
HBCK
Is there
No
abnormality at the
a bit clock
parts and patterns
input?
in the input path?
Yes
To Step 5-1
3
4
Is there
No
Replace IC651.
Is there
No
Replace IC651.
Is there
No
Replace IC651.
Is there
No
Replace IC651.
4