Panasonic TH-42LF6W Service Manual page 18

TH-42LF6W_TH-42LF60W
[Diagnostic flow chart]
Is a test pattern
displayed normally?
No
It is still abnormal.
Is a part abnormal
even in a test pattern?
No
This is not an abnormality
of part
Is the whole abnormal
even in a test pattern?
or
A test pattern is not
displayed but is the state
of LED blink of red and
orange?
No
- The whole is not abnormal.
- It is not blinking.
A test pattern is not
displayed but is the state
of LED green lighting?
Yes
It displays.
Yes
It is abnormal. If "FRAME CREATION" of
"PICTURE" in On-Screen
Menu is set to "OFF", does
symptom disappear?
Vertical line/ Horizontal line/ Color
Vertical bar Horizontal bar unevenness
Failure of LCD Panel
(rarely failure of A-Board or FR-Board)
Yes
It is abnormal.
If "FRAME CREATION" of
"PICTURE" in On-Screen
Menu is set to "OFF", does
Yes
symptom disappear?
It is blinking.
Vertical line/ An image is
Vertical bar not displayed.
LED blinking
Failure of A-Board or LCD Panel
(rarely failure of FR-Board)
Yes
It is green lighting.
An image is
not displayed.
LED lighting
Failure of A-Board
Yes
It disappears.
No
It is still abnormal.
Yes
It disappears.
No
It is still abnormal.
Failure of A-Board
Please refer to the next page for "FRAME CREATION". Please refer to the next page for "FRAME CREATION".
18
Failure of FR-Board
Failure of FR-Board