Troubleshooting; Diagnosing And Solving Problems - NEC VERSA P Service Manual

4-6 Troubleshooting and Repair

TROUBLESHOOTING

The system has a built-in checking program called POST that automatically tests compo-
nents at power-on. If the system locates a problem during POST the system displays an er-
ror message. See Table 2-4, "POST Error Messages" in Section 2 for a complete list of
power-on self-test errors.
This subsection provides information that helps isolate and repair system malfunctions at the
field level. Step-by-step instructions on diagnosing and solving system hardware problems
are provided first. For detailed fault analysis, use the QAPlus/fe Diagnostics Kit, which in-
cludes disk-based programs for testing machine devices and documentation describing how
to run the tests and interpret the results.

Diagnosing and Solving Problems

Table Section 4-2 summarizes problems that may develop during system operation and lists
(in sequential order) suggested corrective actions.
Problem
No power
Data on the LCD is unreadable.
LCD screen does not show data.
Battery power does not last.
Table Section 4-2 Problems and Solutions
Corrective Action
1. Check that the AC adapter is plugged into the power
connector on the system. Also, that the AC adapter is
plugged into a properly grounded AC power outlet. If using
the battery as the main power source, see the following step.
2. Check that the primary battery pack is charged and
inserted correctly.
3. Replace the system board.
1. Adjust the brightness control.
2. Check that the LCD is connected to the system correctly.
1. Power saving mode has shut off the backlight. Press any
key,
Fn F5
2. The built-in LCD may not be selected. Press
3. The Brightness control needs adjustment.
4. Plug in the AC adapter or replace the primary battery pack.
Press the suspend button to resume operation.
1. Make sure the power management features are set.
Recharge the primary battery pack (Discharge utilty).
2. Replace the primary battery pack with a new one.
or the suspend button.
.
Fn F3