Pioneer SX-LX70SW Service Manual page 33

5
QQ
3 7 63 1515 0
Step 4-3-2: When a sound is not out with the HDMI
(When the source is SACD)
IC651 (Pin 1)
Is the voltage
3.3 V?
Yes
IC651 (Pin 13)
Is there
a audio data
input?
Yes
IC651 (Pin 3)
Is there
a audio data
input?
Yes
IC651 (Pin 6)
TE
L 13942296513
Is there
a bit clock
input?
Yes
To Step 5-2
www
.
5
http://www.xiaoyu163.com
6
HDSW
No
Check the path to the microcomputer.
DSDR0 (HLR)
Is there
No
No
abnormality at the
parts and patterns
in the input path?
Replace IC651.
DSDL0 (HFDT)
Is there
No
No
abnormality at the
parts and patterns
in the input path?
Replace IC651.
HBCK
Is there
No
No
abnormality at the
parts and patterns
in the input path?
Replace IC651.
x ao u163
y
i
6
http://www.xiaoyu163.com
7
2 9
8
Step 5-1: Audio Clock (from Switch to 1st DSP)
IC651 (Pin 9)
Is there
a master clock
(24.576 MHz)?
Yes
IC291 (Pin 1)
Is there
a master clock
(24.576 MHz)?
Yes
IC291 (Pin 3)
Is there
a master clock
(24.576 MHz)?
Yes
IC101 F14 (R112)
Is there
a master clock
Q Q
3 6 7 (24.576 MHz)? 1 3 1 5
Yes
IC651 (Pin 12)
Is there
a LR clock
?
Yes
IC101 H13 (R114)
Is there
a LR clock
?
Yes
E
co
.
SX-LX70SW
7
8
9 4 2 8
MCLK
Is there
No
No
abnormality at the
parts and patterns
in the path?
Replace IC651 or,
when IC101 is defective,
Replace the Assy.
Is there
No
No
abnormality at the
parts and patterns
in the path?
Replace IC651 or,
when IC101 is defective,
MCK1
Replace the Assy.
Is there
No
No
abnormality at the
parts and patterns
in the path?
Replace IC651 or,
when IC101 is defective,
Replace the Assy.
Is there
No
No
abnormality at the
parts and patterns
0 5 8 2 9 9 4 2 8
in the path?
Replace IC651 or,
when IC101 is defective,
LCK1
Replace the Assy.
Is there
No
No
abnormality at the
parts and patterns
in the path?
Replace IC651 or,
when IC101 is defective,
Replace the Assy.
Is there
No
No
abnormality at the
parts and patterns
in the path?
Replace IC651 or,
when IC101 is defective,
Replace the Assy.
m
9 9
A
B
C
9 9
D
E
F
33
8