7-2 Solving Problems
■
Additional memory is installed correctly (see “SIMM
Upgrade Kits” in Chapter 5).
■
Any option you have installed is designed for your
system and is set up correctly.
Troubleshooting
PROBLEM
CORRECTIVE ACTION
System Errors
No power. Power lamp is
not lit.
Check that the power cable is plugged into
the system power socket. Check that the
other end of the cable is plugged into a live,
properly grounded AC power outlet.
System does not boot and
an error message is
displayed on the screen.
Run Setup (see Chapter 2). Check that the
parameters are set correctly, particularly if
you just installed an option.
The system makes a continuous
sound pattern.
Turn system power off, wait 5 seconds, and
turn the power on again. If the sound
continues, call the NEC Technical Support
Center. See “If You Need Assistance” later
in this chapter for the telephone number.
The system no longer
maintains the date, time, or
your system configuration.
Replace the system configuration backup
battery. See “Battery Replacement” later in
this chapter for information about replacing
the battery.
The system does not boot from
the hard disk.
The system always tries to start from the
diskette drive before it starts from the hard
disk. Remove any diskette in the drives.
Run Setup and check Boot parameter
settings.
Summary of Contents for POWERMATE V486 - SERVICE
Page 31: ...1 18 Using Your Computer Minitower fax modem jacks ...
Page 35: ...1 22 Using Your Computer Keyboard supports Keyboard features U S model ...
Page 47: ...1 34 Using Your Computer Loading a CD into the desktop Loading a CD into the minitower ...
Page 131: ...Adding Options 5 15 Removing the screw in the minitower ...
Page 148: ...5 32 Adding Options Locating the cache sockets in the minitower ...
Page 166: ...5 50 Adding Options System board cable connectors in the desktop ...
Page 167: ...Adding Options 5 51 System board cable connectors in the minitower ...
Page 179: ...Adding Options 5 63 Securing the device ...
Page 192: ...5 76 Adding Options Connecting an RS 232C cable to the minitower ...
Page 195: ...Adding Options 5 79 Connecting speaker components ...
Page 200: ...5 84 Adding Options Connecting a telephone line to the desktop ...
Page 205: ...6 4 Setting System Board Jumpers JP3 through JP9 J9 JP11 and JP21 through JP23 jumpers ...
Page 251: ...Sound Board Jumper Settings D 3 Sound board jumper locations and functions ...
Page 255: ...Sound Board Jumper Settings D 7 High DMA channel settings ...