Sanyo DP32640 Service Manual page 4

Repair Flow Chart:Trouble Condition
Green Power LED and LCD backlights are ON,but no video or OSD.
Is the 12V supplied from "K17 Pin 8/9"?
Is power 12V supllied from "K5A Pin2"?
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".
(TABLE*1.0)Main board:"LVDS Clock"Test Points
32" Models
DP32640-11
DP32642-00
Note:The bandwidth of the oscilloscope and probe must be at least 100MHZ or higher to check if the clock pluse exists.
LCD backlights are ON,
but TV has NO VIDEO or OSD.
On analog board:
Yes
On digital board:
Yes:12V
On digital board:
Is power 12V to TCON supplied
from"K5LV Pin29/33/37" ?
Yes:12V
Is LVDS clock outputed?
(see TABLE*1.0)
Yes
Confirm LVDS cable connection
and check for video OSD again.
LVDS Clock on digital board
N8LA K5LV Pin#26 clock+
Z6TE K5LV Pin#28 clock-
No:0V
Replace"Power board" and
"Wire harness".
No:0V
Analog board is not working.
Replace "analog board".
No:0V
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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