Sanyo FVM3982 Service Manual page 7

Repair Flow Chart:Trouble Condition
Green Power LED and LCD backlights are ON,but no video or OSD.
LCD backlights are ON,
but TV has NO VIDEO or OSD.
On analog board:
Is the 12V supplied from "K17 Pin 8/9"?
On digital board:
Is power 12V supllied from "K5A Pin2"?
On digital board:
Is power 12V to TCON supplied
from"K5LV Pin29/33/37" ?
Confirm LVDS cable connection
and check for video OSD again.
T.Cnt.Board or LCD panel is not working.
1st:Replace"T.Cnt.Board&LVDS Cable".
If T.Cnt.board&LVDS cable do not correct
problem,then 2nd:Replace"LCD Panel".
See TABLE *1.0
Ｙｅｓ
See TABLE *2.0
Ｙｅｓ：１２Ｖ
Ｎｏ：０Ｖ
See TABLE *3.0
Ｙｅｓ：１２Ｖ
Is LVDS clock outputed?
See TABLE *4.0
Ｙｅｓ
Ｎｏ：０Ｖ
Replace"Power board" and
"Wire harness".
Ｎｏ：０Ｖ
Analog board is not working.
Replace "analog board".
Digital board is not working.
Replace "digital board".
Ｎｏ：０Ｖ ｏｒ １．１Ｖｃｏｎｓｔａｎｔ
Digit board is not working.
Replace "digital board".
If the clock output is OK,the digital board is
normally OK,but can not be 100% sure.If
the T Cont Board &LVDS do not the correct
problem,please try the digital before ordering
a panel.
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