Sanyo DP32640 - 31.5" Diagonal LCD HDTV 720p, Руководство по обслуживанию

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Repair Flow Chart:Trouble Condition
Green Power LED does not turn on. The TV is dead.
Green Power LED:
Does not turn ON.
The TV is dead.
On analog signal board:
Is the “5VSTB” voltage supplied?
(see TABLE*1.0)
On digital signal board:
Is the “5V_STBY” voltage on
“K5A Pin 3 or Pin 4”?
Analog board is not working.
Replace “analog board”.
Unplug(CN2) connector on
power board. On Power board:
Is the “5VSTB” voltage supplied?
(see TABLE*2.0)
Power board is not working.
Replace “Power board”.
Unplug(K16A) and(K16B) connector
between digital unit and analog unit
Is the “5V_STBY” voltage supplied?
(see TABLE*3.0)
Analog board is not working.
Replace “analog board”.
Replace “digital board”.
While pushing the “power key sw”
is the 2.9V from “key sw2”
supplied to “K16A Pin17”?
Analog board was broken.
Replace “analog board”.
Digital board is not working.
Replace “digital board”.
No:0v
No:0v
Yes:5v
Yes:5v
No:0v
Yes:5v
Yes:5v
No:0v
Yes
No voltage(0v)at K16A Pin17 or 2.9v always present.
Repair Flow Chart:Trouble Condition
Green Power is on,but LCD backlights are not on.
Backlights do not turn on, or only turn on and back off.
Power LED turns ON,
but LCD backlight is not ON
or only turned ON and then
back OFF.
On analog signal board:
Is the “BL_SW” voltage (5V)
Supplied from “K17 Pin13”?
On Power board:
Is the 0V supplied from “CN3 Pin10”
during LED on time?
Panel is broken.
Replace “Panel”.
On digital board:
Is 3.3V supplied to”K5A Pin19” ?
Digit board is not working.
Replace “digital board”.
On Power board:
Is the +20 sine wave supplied from“CN3 Pin 1/2/3”
and -20 sine wave supplied from“CN3
Pin 4/5/6”?
Power board is not working.
Replace “Power board”.
Confirm wire harness connection
between analog board &Power board
and between Power board and panel .
Panel is not working
Replace panel.
Replace “analog board and
wire harness”.
No:0V
No:0V
Yes:5V
Yes:3.3V
Yes:0V
No:over 0.1V
No:0V
Yes:+/-20 sine wave(RMS)
Page 1
(TABLE *1.0)Analog board:5VSTB Test Points
32" Models 5VSTB on analog board Confirmation Voltage
DP32640-11 N8LA
DP32642-00 Z6TE
Analog K17 Pin4 or Pin 5 5V
(TABLE *2.0) Power board:5VSTB Test Points
32" Models 5VSTB on power board Confirmation Voltage
DP32640-11 N8LA
DP32642-00 Z6TE
Power CN2 Pin4 or Pin 5 5V
(TABLE *3.0)Digital board:5V_STBY
32" Models 5V_STBY on analog board Confirmation Voltage
DP32640-11 N8LA
DP32642-00 Z6TE
Analog board K16A Pin3 or Pin 4 5V