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8-27
Connect
AC Adapter
to the computer
Set Power
Switch
te ON
Does
Power Indication
LED
light?
Check
power
supply
voltage
of AC Adapter
Is
voltage 5.6V,6.1V,7.15V
of plug ?
Check
power
supply
voltage
of Main
Board
Peplace AC Adaptes
Dees
Beeper
sound?
No
Voltage
+5 Present
Is anything
displayed
on
the screen
Yes
Adjust the contrast
of LCD Displey
Replace Power Boerd
Replace Main Board
fs anything
No
displayed
on
screen?
1
Check connector
a
dae
aie
cable
between
LCD
and Main Boerd
Any
reguler
vertical
line display
screen
Yes
Check supply voltage
on
for LCD
Check
connector
cable between
LCD
and Mein Board
No
Any
Signal at CNS
on
the Main
Board
No
Replace Main Boerd
Replece
LCD Display
1)
Repisce Main Boerd
Yes
45 765 A12
CS 55 843
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