VSX-LX50
59
5
6
7
8
5
6
7
8
C
D
F
A
B
E
F
Yes
LLC1
Check the parts and patterns in
the path (IC401 to IC455, IC701).
If IC401 or IC455, IC701 is failure,
replace IC401, IC455, IC701.
R401
e
Is there a clock?
No
Yes
P22 to P29
Check the parts and patterns in
the path (IC401 to IC452).
If IC401 or IC452 is failure,
replace IC401 or IC452.
IC452 (Pins 2 to 9)
f-2
Is there a data?
No
Yes
Check the parts and patterns in
the path (IC401 to IC453).
If IC401 or IC453 is failure,
replace IC401 or IC453.
IC453 (Pins 2-9)
f-3
Is there a data?
No
Yes
VS
Check the parts and patterns in
the path (IC401 to IC451).
If IC401 or IC451 is failure,
replace IC401 or IC451.
IC451 (Pin 2)
g-1
Does
a VSYNC output in
constant period
?
No
Yes
F/DE
Check the parts and patterns in
the path (IC401 to IC451).
If IC401 or IC451 is failure,
replace IC401 or IC451.
IC451 (Pin 3)
g-2
Does
a DE output in
constant period
?
No
Yes
IP
Check the parts and patterns in
the path (IC501 to IC454).
If IC501 or IC454 is failure,
replace IC501 or IC454.
IC454 (Pin 1)
I
No
Yes
HS
Check the parts and patterns in
the path (IC401 to IC451).
If IC401 or IC451 is failure,
replace IC401 or IC451.
IC451 (Pin 4)
g-3
Does
a HSYNC output in
constant period
?
No
Yes
P2-P9
Check the parts and patterns in
the path (IC401 to IC454, IC701).
If IC401 or IC454 or IC701 is
failure, replace IC401 or IC454 or
IC701.
IC701 (Pins 2 to 9)
IC454 (Pins 2 to 9)
f-1
Is there a data?
No
Yes
XVCRST
Check the parts and patterns in
the path (IC501 to IC401, IC701).
If IC501 is failure, replace IC501.
Check the parts and patterns in
the path (IC501 to IC401, IC701).
If IC501 is failure, replace IC501.
IC501 (Pin 3)
b
Is the voltage
"H" (3.3 V)?
No
Yes
Yes
XTAL1
Check the X401 or IC401.
If X401 or IC401 is failure,
replace X401 or IC401.
IC401 (Pin 81)
c
Is
there the CLK
(28.63636MHz)
?
No
Step 3-3:
R
eset
X'tal
Step 3-4: I2C
Step 3-5: VIDE
O
CLK, DA
T
A
No
R556
VCSDA
d-1
Does
a signal output in
constant period
(0 to 3.3 V)
?
Check the parts and patterns in
the path (IC501 to IC401, IC701).
If IC501 is failure, replace IC501.
Yes
No
R557
VCSCL
d-2
Does
a clock output in
constant period
(0 to 3.3 V)
?
* 480i/576i input only
XVCOE
Check the parts and patterns in
the path (IC501 to IC451, IC452,
IC453 and IC455).
If IC501 or IC451 or IC452 or
IC453 or IC455 is failure, replace
IC501 or IC451 orIC452 or IC453
or IC455.
IC451, IC452 (Pin 1)
IC453, IC455 (Pin 1)
h
Is there voltage
"L" (0 V)?
Is there voltage
"L" (0 V)?
No
P12-P29
* I/P ON (480i/576i) or 480p/
576p/720p/1080i input only
* I/P ON (480i/576i) or 480p/
576p/720p/1080i input only
* I/P ON (480i/576i) or 480p/
576p/720p/1080i input only
* I/P ON (480i/576i) or 480p/
576p/720p/1080i input only
* 480i/576i input and I/P OFF only
G
Yes