NEC PowerMate 2000 Series Service And Reference Manual page 120

Problem Symptom
Network board No output.
malfunction
Keyboard or mouse LCD panel display has prompt,
but cannot input data using
malfunction
keyboard or mouse.
Blank display.
LCD panel
malfunction
PC card does not No output.
work
CD-ROM drive System power not on.
malfunction
Disc tray does not open.
7-8 Troubleshooting
Problems and Solutions
Solution
1. Check interrupts (see Section 2).
2. Check cable connections at network
board and LAN connector board.
3. Replace network board cable.
4. Replace LAN connector board (see
Section 3).
5. Replace network board (see Section 3).
1. Check keyboard/mouse plugged in.
2. Check password (see Section 2).
3. Disable password (see Section 2).
4. Replace keyboard (or mouse).
5. Replace system board.
1. Press any key or move the mouse to
ensure power management has not blanked
the display.
2. Check that system unit power is on.
3. Adjust brightness controls on LCD panel.
4. Check that LCD panel interface cable and
switch cable are connected to system board
(see Section 3).
5. Replace LCD panel.
1. Check PC card for correct insertion in slot
(label side up).
2. Remove PC card and insert in other slot.
3. Check PC card driver installation for IRQ
or I/O conflict.
4. Replace PC card.
5. Replace PC card bay (see Section 3).
1. Turn system unit power on.
1. System unit power not on. Turn system
power on.
2. System power failed. Insert the end of a
straightened paper clip into the emergency
eject hole, then gently press inward until the
tray opens.