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SX-LX70SW
40
1
2
3
4
1
2
3
4
C
D
F
A
B
E
For the following diagnosis, a digital
oscilloscope m
u
st be
u
sed.
For the following diagnosis, a digital
oscilloscope m
u
st be
u
sed.
For the following diagnosis, a digital
oscilloscope m
u
st be
u
sed.
K
Is the
voltage of D2RST
maintained in 3.3
V
?
(Does it fall to become
0
V
periodically?)
Step 9: 2nd DSP
IC201 (Pin 47)
DSP2RST (19D) (DSP UCOM)
Check the parts and patterns
in the path.
The 2nd DSP or the comm
u
nication
path is in fail
u
re.
Yes
Yes
Is the voltage
3.3
V
?
N
o
N
o
DSP CDI
N
(9
8
D) (DSP UCOM)
DSP2SSI (1D) (DSP UCOM)
DSP2SCK (100D) (DSP UCOM)
DSP2MOSI (99D) (DSP UCOM)
DSP2MISO (9
8
D) (DSP UCOM)
The 1st DSP or the comm
u
nication
path is in fail
u
re.
IC101 A10 (R134)
N
o
Is the clock
signal o
u
tp
u
t while the
voltage is 0
V
?
Yes
Yes
Check the parts and patterns
in the path.
IC201 (Pin 36)
N
o
Is the clock
signal o
u
tp
u
t while the
voltage is 0
V
?
Yes
Check the parts and patterns
in the path.
IC201 (Pin 34)
N
o
Is the clock
signal o
u
tp
u
t while the
voltage is 0
V
?
The 2nd DSP or the comm
u
nication
path is in fail
u
re.
IC201 (Pin 35)
N
o
Is the clock
signal o
u
tp
u
t while the
voltage is 0
V
?
Yes
It is very diffic
u
lt to diagnose
which part is in fail
u
re.
IC201 (Pin 37)
Check the parts and patterns
in the path.
N
o
Yes
Does the logic
of D2CS periodically
become 3.3
V
or
0
V
?
It is very diffic
u
lt to diagnose
which part is in fail
u
re.
Summary of Contents for AS-LX70
Page 3: ...SX LX70SW 3 5 6 7 8 5 6 7 8 C D F A B E ...
Page 15: ...SX LX70SW 15 5 6 7 8 5 6 7 8 C D F A B E ...
Page 68: ...SX LX70SW 68 1 2 3 4 1 2 3 4 C D F A B E 9 2 PACKING AS LX70 x 2 Refer to 9 6 REMOTE CONTROL ...
Page 74: ...SX LX70SW 74 1 2 3 4 1 2 3 4 C D F A B E 9 5 DISPLAY UNIT H G I NON CONTACT SIDE CONTACT SIDE ...
Page 76: ...SX LX70SW 76 1 2 3 4 1 2 3 4 C D F A B E 9 6 REMOTE CONTROL ...
Page 97: ...SX LX70SW 97 5 6 7 8 5 6 7 8 C D F A B E ...
Page 106: ...SX LX70SW 106 1 2 3 4 1 2 3 4 C D F A B E 10 15 POWER SUPPLY UNIT J ...
Page 108: ...SX LX70SW 108 1 2 3 4 1 2 3 4 C D F A B E ...
Page 130: ...SX LX70SW 130 1 2 3 4 1 2 3 4 C D F A B E CN3 CN2 J J POWER SUPPLY ASSY SIDE B SIDE B J ...