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6-8
Problem Solving
Preparing the System for Diagnostic Testing
To prepare the system for diagnostic testing, perform
the following:
Notice: Before disconnecting any peripheral cables
from the system, turn off the system and any external
peripheral devices. Failure to do so can cause
permanent damage to the system and/or the peripheral
devices.
1.
Turn off the system and all external peripheral
devices. Disconnect all devices from the system
except the keyboard and video monitor.
2.
Make sure the system power cord is plugged into
a properly grounded AC outlet.
3.
Make sure your video display monitor and
keyboard are correctly connected to the system.
Turn on the video monitor. Set its brightness and
contrast controls to at least two-thirds of their
maximum ranges (refer to the documentation
supplied with your video display monitor).
4.
If the operating system normally loads from the
hard disk drive, make sure there is no diskette in
drive A. Otherwise, place a diskette containing
the operating system files in drive A.
5.
Turn on the system. If the power indicator LED
does not light, refer to Power Light Does Not
Light found later in this chapter.