Advertisement
3.
If the message appears, go to PROCEDURE 3.
4.
If the message does not appear, first do the following:
(a)
Confirm that the contrast knob is adjusted correctly.
(b)
Confirm that the display is not on an external CRT.
(The CRT indicator lamp will be lit if the display
is on an external CRT.)
After confirming (a) and (b) above, perform steps 1 and 2 again. If
the message still fails to appear, go to PROCEDURE 2.
Page 2-38
PROCEDURE 2
LCD Contrast Check
1.
Turn the contrast knob, then confirm that the screen becomes
changed darker or brighter.
2.
If the screen is changed darker or brighter, power supply inputs
voltage to the LCD module. Go to PROCEDURE 7.
3.
If the screen is not changed, go to PROCEDURE 4.
FIGURE 2-12 LCD Contrast Check
Page 2-39
PROCEDURE 3
Display Test Execution
1.
Insert the diagnostics disk into the FDD and run the test and
diagnostics programs.
2.
If an error is generated during the display test from the
diagnostics test menu, the system PCB is probably defective.
Refer to part 2.4.
3.
If no error is generated, the LCD is normal.
Page 2-40
PROCEDURE 4
System PCB Connector Check
1.
Turn the POWER switch off and disconnect the ac adapter from the DC
IN 12V jack.
2.
Remove the top cover assembly. (Refer to part 4.2.)
3.
Confirm that the LCD cable is connected securely to the system PCB
connector (PJ 11).
4.
If the cable is connected securely, go to PROCEDURE 5.
Advertisement
