3-2 Maintaining Your Computer
■
Disconnect your system from power lines when an
electrical storm threatens. Lightning can travel in on
power lines and damage your monitor and the system
unit.
■
Be sure that system power is off before you connect or
disconnect a cable. Never make cable changes when the
system power is on. To do so could damage your system
and its peripherals.
■
Use Setup options to protect against viruses (see
Chapter 2). Use appropriate virus detection software
regularly to protect your system from computer viruses.
If you plan to use software programs other than NEC
supplied software, NEC strongly recommends that you
take the necessary steps, such as virus checks, to protect
your system.
■
Place your computer away from direct sunlight and
extreme hot and cold temperatures.
The recommended operating environment is from 50
°
F
to 95
°
F (10
°
C to 35
°
C).
The recommended non-operating environment (shipping
or storage) is from 14
°
F to 158
°
F (–10
°
C to 70
°
C).
■
Back up all hard disk information on a regular basis.
■
After turning off power, wait about five seconds for the
hard disk to spin down before you power on again.
■
Be sure that nothing is placed on top of your system
power cables.
■
Prevent dust from entering your system by covering it
when it is not in use.
Содержание POWERMATE V486 - SERVICE
Страница 31: ...1 18 Using Your Computer Minitower fax modem jacks ...
Страница 35: ...1 22 Using Your Computer Keyboard supports Keyboard features U S model ...
Страница 47: ...1 34 Using Your Computer Loading a CD into the desktop Loading a CD into the minitower ...
Страница 108: ...Removing the System Unit Cover 4 3 Releasing the cover 6 Lift the cover up and away from the unit Removing the cover ...
Страница 125: ...Adding Options 5 9 Removing a slot cover in the desktop Removing a slot cover in the minitower ...
Страница 127: ...Adding Options 5 11 6 Insert the screw to attach the board to the support bracket Securing the board in the desktop ...
Страница 128: ...5 12 Adding Options Securing the board in the minitower 7 Replace the system unit cover see Chapter 4 ...
Страница 130: ...5 14 Adding Options 2 Remove the screw that secures the board to the support bracket Removing the screw in the desktop ...
Страница 131: ...Adding Options 5 15 Removing the screw in the minitower ...
Страница 148: ...5 32 Adding Options Locating the cache sockets in the minitower ...
Страница 166: ...5 50 Adding Options System board cable connectors in the desktop ...
Страница 167: ...Adding Options 5 51 System board cable connectors in the minitower ...
Страница 179: ...Adding Options 5 63 Securing the device ...
Страница 192: ...5 76 Adding Options Connecting an RS 232C cable to the minitower ...
Страница 195: ...Adding Options 5 79 Connecting speaker components ...
Страница 200: ...5 84 Adding Options Connecting a telephone line to the desktop ...
Страница 203: ...6 2 Setting System Board Jumpers System board jumper locations and factory settings JP2 jumper settings ...
Страница 204: ...Setting System Board Jumpers 6 3 JP16 and JP17 jumper settings JP1 and JP19 jumper settings VR1 VR2 VR3 and VR4 jumpers ...
Страница 205: ...6 4 Setting System Board Jumpers JP3 through JP9 J9 JP11 and JP21 through JP23 jumpers ...
Страница 251: ...Sound Board Jumper Settings D 3 Sound board jumper locations and functions ...
Страница 255: ...Sound Board Jumper Settings D 7 High DMA channel settings ...