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Troubleshooting Your System 137
Troubleshooting Your System
Safety First—For You and Your System
To perform certain procedures in this document, you must remove the system
cover and work inside the system. While working inside the system, do not
attempt to service the system except as explained in this guide and elsewhere
in your system documentation.
CAUTION: Only trained service technicians are authorized to remove the system
cover and access any of the components inside the system. Before performing any
procedure, see your Product Information Guide for complete information about
safety precautions, working inside the computer and protecting against
electrostatic discharge.
Start-Up Routine
Look and listen during the system's start-up routine for the indications
described in Table 4-1.
Table 4-1. Start-Up Routine Indications
Look/listen for: Action
A status or error message displayed on
the front-panel LCD.
See "LCD Status Messages" on page 22.
An error message displayed on the
monitor.
See "System Messages" on page 35.
Alert messages from the systems
management software.
See the systems management software
documentation.
The monitor's power indicator. See "Troubleshooting the Video Subsystem"
on page 139.
The keyboard indicators. See "Troubleshooting the Keyboard" on
page 140.
The USB diskette drive activity
indicator.
See "Troubleshooting a USB Device" on
page 143.