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5. Troubleshooting
<Symptom>
Abnormal Picture (All over the screen)
<Trouble Picture Example>
N
o
P
c i
u t
e r
V
r e
c i t
a
L l
n i
e
H
r o
z i
o
n
a t
L l
n i
e
(
O
r
g i
n i
l a
P
t c i
r u
) e
N
o
s i
e
P
c i
u t
e r
N
o
s i
e
N
o
s i
e
P
c i
u t
e r
r I
e r
g
l u
(
O
S
D
a
s l
o
N
G
)
(
O
S
D
r I
e r
g
l u
H
r o
z i
o
n
a t
L l
n i
e
(
O
S
D
Picture Problem (1-1)
<Caused Possibility>
A, D Board
P
c i
u t
e r
<Diagnosis Procedure>
1. Disconnect A5 connector
2. Enter to the Test pattern
r a
C
l o
or
a
s l
o
N
G
)
<Counter Measure>
Can you see the
OSD on the screen?
r a
C
l o
r o
a
s l
o
N
G
)
Enter to the test pattern.
Can you see the
pattern (*1) normally?
A Board
After disconnect A5 connector
No
then Power ON.
Can you see the white pattern (*1)?
Yes
A Board
No
D Board
Yes
(*1)
White Pattern and Test Pattern are generated by IC9300/IC9400 of D Board.
When these patterns are normally displayed on the screen, It can be seem
good processing circuit between the D board and panel drive circuit.
Notice:
Regarding information for test pattern in detail,
Please refer to Page 26, 27.
(except PX80 series)
No
D Board
Yes
20
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Table of Contents
Troubleshooting
