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No.
13
Real time Clock is not
updating
14
Memory size/data error
15
PCI failur
4.4.3. LCD DIANOSIS
Make sure that connecting cables, connectors and AC adapter are not loose or disconnected prior to testing.
No.
1
No picture appears on the
screen.
2
Display is too dark or too
bright.
3
Part of the screen does
not display properly.
Display quality poor.
(Fuzzy or slanted, etc.)
4
Backlight does not turn on.
Symptom
No.
13-1
14-1
15-1
15-2
Symptom
No.
1-1
1-2
1-3
2-1
2-2
2-3
3-1
3-2
4-1
4-2
4-3
Troubleshooting
procedures
Does resetting the date/time
in
SETUP
correct
problem?
Replace the expansion RAM
card.
Does operation return to
normal? (Go to "NO" if not
connected.)
Does the system return to
normal if the expansion card
is removed?
Replace the expansion card.
Does operation return to
normal?
Troubleshooting
procedures
Does the LCD display
properly after brightness
level is adjusted?
Replace the LCD.
Does operation return to
normal?
Replace the Main PCB.
Does operation return to
normal?
Does the LCD display
properly after brightness
level is adjusted?
Replace the LCD.
Does operation return to
normal?
Replace the Main PCB.
Does operation return to
normal?
Replace the LCD.
Does operation return to
normal.
Replace the Main PCB.
Does operation return to
normal?
Replace the Inverter PCB.
Does operation returnt o
normal?
Replace the Inverter cable.
Does operation return to
normal?
Replace the backlight.
Does operation return to
normal?
4 - 7
Source of
problem
Result
Error during
YES
the
SETUP
NO
Main PCB
Expansion RAM
YES
card
NO
Main PCB
YES
Go to No. 15-2
NO
Main PCB
YES
Expansion card
NO
Main PCB
Source of
problem
Result
Brigntness
YES
adjustment
NO
Go to No. 1-2
YES LCD
NO
Go to No. 1-3
YES
Main PCB
NO
LCD cable
Brigntness
YES
adjustment
NO
Go to No. 2-2
YES
LCD
NO
Go to No. 2-3
YES
Main PCB
NO
LCD cable
YES
LCD
NO
Go to No. 3-2
YES
Main PCB
NO
LCD cable
YES
Inverter PCB
NO
Go to No. 4-2
YES
Inverter cable
NO
Go to No. 4-3
YES
Backlight
NO
Main PCB
Component
IC3
IC2
IC10 17
IC2
IC2
Component
IC4
CN903
IC49
IC4
CN903
IC49
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