Pioneer SX-LX70SW Service Manual page 23

5
QQ
3 7 63 1515 0
B
IC101 (Pin 34)
Is there
a same signal as G5
(0 - 3.3 V)?
Yes
JA1151 (Pin 16)
Does
a signal output in
constant period
(0 - 5 V)
?
Yes
JA1151 (Pin 15)
Does
a clock output in
constant period
(0 - 5 V)
?
Yes
TE
L 13942296513
IC1252 (Pin 7)
Is there
a same signal as G7
(0 - 4.4 V)?
Yes
IC1252 (Pin 4)
Is there
a same signal as G8
(0 - 4.4 V)?
Yes
IC101 (Pin 28)
Is there
a same signal as G7
(0 - 3.3 V)?
Yes
IC101 (Pin 29)
www
Is there
a same signal as G8
(0 - 3.3 V)?
.
Yes
5
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6
DSCL0
D2
No
Check the patterns in the path.
Check IC1206.
No
Replace IC1206.
* When connected the source
equipment to IN2.
SDA(HDMI IN2)
G7
No
Check the patterns in the path.
Check JA1151.
No
Replace JA1151.
SCL(HDMI IN2)
G8
No
Check the patterns in the path.
Check JA1151
No
Replace JA1151.
G9
No
Check the patterns in the path.
Check IC1251,IC1252.
No
Replace IC1251,IC1252.
G2
No
Check the patterns in the path.
Check IC1251,IC1252.
No
Replace IC1251,IC1252.
DSDA1
D3
No
Check the patterns in the path.
Check IC1255.
No
Replace IC1256.
DSCL1
D4
x ao u163
No
Check the patterns in the path.
y
Check IC1257.
i
No
Replace IC1257.
6
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7
2 9
8
JA1152 (Pin 16)
Does
a signal output in
constant period
(0 - 5 V)
?
Yes
JA1152 (Pin 15)
Does
a clock output in
constant period
(0 - 5 V)
?
Yes
IC1254 (Pin 7)
Is there
a same signal as G10
(0 - 4.4 V)?
Yes
IC1254 (Pin 4)
Q Q
3 6 7 1 3 1 5
Is there
a same signal as G11
(0 - 4.4 V)?
Yes
IC101 (Pin 28)
Is there
a same signal as G10
(0 - 3.3 V)?
Yes
IC101 (Pin 29)
Is there
a same signal as G11
(0 - 3.3 V)?
Yes
JA301 (Pin 16)
Does
a signal output in
constant period
co
(0 - 5 V)
?
Yes
.
C
SX-LX70SW
7
8
9 4 2 8
* When connected the source
equipment to IN3.
SDA(HDMI IN3)
G10
No
Check the patterns in the path.
Check JA1152.
No
Replace JA1152.
SCL(HDMI IN3)
G11
No
Check the patterns in the path.
Check JA1152.
No
Replace JA1152.
G12
No
Check the patterns in the path.
Check IC1253,IC1254.
No
Replace IC1253,IC1254.
0 5 8 2 9 9 4 2 8
G3
No
Check the patterns in the path.
Check IC1253,IC1254.
No
Replace IC1253,IC1254.
DSDA1
D3
No
Check the patterns in the path.
Check IC1255.
No
Replace IC1256.
DSCL1
D4
No
Check the patterns in the path.
Check IC1257.
No
Replace IC1257.
SDA(HDMI OUT)
G13
m
No
Check the patterns in the path.
Check JA301.
No
Replace JA901.
9 9
A
B
C
9 9
D
E
F
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