NEC POWERMATE VE - SERVICE MANUAL 05-1996 Service Manual page 100

4-8 Maintenance and Troubleshooting
Problem
Monitor malfunction
(cont'd)
CD-ROM
Malfunction
Table Section 4-2 Problems and Solutions
Symptom
Wavy display.
Blank display.
Disc tray does not open.
Cannot access CD-ROM
reader.
Solution
1. Check that the computer and monitor
are not near motors or electric fields.
1. Press any key or move mouse to
ensure power management has not
blanked the display.
2. Check that the monitor cable is
attached to the video connector at the rear
of the system.
3. Check that the monitor power ON/OFF
switch is ON.
4. Check cable connections between the
AC power supply and monitor.
5. Adjust brightness and contrast controls
on the monitor.
6. Check cable connections between the
monitor connector and the system board
(or optional video board).
7. Replace monitor.
8. Replace system board.
1. Check that the system power is on.
2. System power failed. Insert a small
object such as a paper clip into the
emergency eject hole to open the tray,
clockwise to close the tray.
1. Check signal/power connections
between reader, PCB, power supply.
2. Check master/slave settings.
3. Check power supply.
4. Check IDE cable. Replace as
necessary.
5. Replace system board.