NEC PowerMate 2000 Series, Инструкция по обслуживанию и справочник, Страница: 120 / 175

7-8 Troubleshooting
Problems and Solutions
Problem Symptom Solution
Network board
malfunction No output. 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).
Keyboard or mouse
malfunction LCD panel display has prompt,
but cannot input data using
keyboard or mouse.
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.
LCD panel
malfunction
Blank display. 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.
PC card does not
work No output.
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).
CD-ROM drive
malfunction System power not on. 1. Turn system unit power on.
Disc tray does not open.
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.