NEC VERSA S Service Manual page 71

The following subsections provide corrective actions when the computer has an error con-
dition. Refer to the appropriate section and Table Section 5-2 to help isolate the problem.
Also see Table Section 5-2 if an error occurs and the system does not display an error mes-
sage or transmit a beep code. Table Section 5-2 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.
System halts during loading
sequence.
I/O processing malfunctions.
Diskette drive does not work.
Hard disk malfunctions.
Suspend button does not work.
Table Section 5-2 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 and contrast controls.
2. Check that the LCD is connected to the system
correctly.
1. Power saving mode has shut off the backlight. Press
any key, Fn Esc or the suspend button.
2. The built-in LCD may not be selected. Press Fn F2
3. Brightness and contrast controls need 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.
2. Replace the primary battery pack with a new one.
1. Check condition of selected bootload device (diskette
or hard disk) for bad boot track or incorrect OS files.
2. Try booting from diskette or recopy operating system
files onto the hard disk.
1. Check the connections of all internal devices.
1. Replace diskette drive.
2. Replace the system board.
1. Check that the built-in IDE controller is enabled.
2. Check drive cables and connections.
3. Replace the drive if necessary.
1. The hard disk may be accessing data. Wait until the
reading/writing process stops and try again.
Troubleshooting and Repair 5-5