VSX-LX50
55
5
6
7
8
5
6
7
8
C
D
F
A
B
E
D
C
JA301 (Pin 16)
SDA (HDMI OUT)
E-13
Does
a signal output in
constant period
(0 to 5 V)
?
Check the patterns and JA301 in
the path.
If JA301 is failure, replace JA301.
JA102 (Pin 15)
SCL (HDMI IN2)
DSDA1
DSCL1
E-8
Does
a clock output in
constant period
(0 to 5 V)
?
Check the patterns and JA102 in
the path.
If JA102 is failure, replace JA102.
Yes
IC172 (Pin 7)
E-9
Is there
a same signal as E-7
(0 to 4.4 V)?
Yes
Check the patterns, IC172 or
IC173 in the path.
If IC172 or IC173 is failure,
replace IC172 or IC173.
IC172 (Pin 4)
E-10
Is there
a same signal as E-8
(0 to 4.4 V)?
Yes
Check the patterns, IC172 or
IC173 in the path.
If IC172 or IC173 is failure,
replace IC172 or IC173.
R169
E-11
Is there
a same signal as E-7
(0 to 3.3 V)?
Yes
Check the patterns and R169 in
the path.
If R169 is failure, replace R169.
Check the patterns and R170 in
the path.
If R170 is failure, replace R170.
R170
E-12
Is there
a same signal as E-8
(0 to 3.3 V)?
Yes
No
No
No
DSDA
DSCL
R358
E-15
Is there a
same signal as E-13
(0 to 3.3 V)?
Yes
Yes
Check the patterns and R358 in
the path.
If R358 is failure, replace R358.
Check the patterns and R357 in
the path.
If R357 is failure, replace R357.
R357
E-1
6
Is there a
same signal as E-14
(0 to 3.3 V)?
Yes
Yes
No
DCK
Check the parts and patterns in
the path (IC101 to IC301).
If IC101 is failure, replace IC101.
DCK
F
Is there a clock?
No
Yes
D4 to D11 *Skip at analog to HDMI
*Skip at analog to HDMI
480i/576i
Check the parts and patterns in
the path (IC101 to IC301).
If IC101 is failure, replace IC101.
D4 to D11
G-1
Is there a data?
No
Yes
D16 to D23
Check the parts and patterns in
the path (IC101 to IC301).
If IC101 is failure, replace IC101.
D16 to D23
G-2
Is there a data?
No
Yes
D28 to D35
Check the parts and patterns in
the path (IC101 to IC301).
If IC101 is failure, replace IC101.
D28 to D35
G-3
Is there a data?
No
No
No
No
No
Yes
Step 2-
6
: VIDE
O
CLK, DA
T
A
JA102 (Pin 16)
SDA (HDMI IN2)
E-7
Does
a signal output in
constant period
(0 to 5 V)
?
Check the patterns and JA102 in
the path.
If JA102 is failure, replace JA102.
No
Yes
* When connected the sink
e
q
uipment to OUT.
JA301 (Pin 15)
SCL (HDMI OUT)
E-14
Does
a clock output in
constant period
(0 to 5 V)
?
Check the patterns and JA301 in
the path.
If JA301 is failure, replace JA301.
No