Dell T105 Systems owner manual Safety First-For You and Your System, Start-Up Routine, 103

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 code displayed on the system	See "Diagnostic Lights" on page 18.
diagnostic indicators.

An error message displayed on the monitor.

See "System Messages" on page 20.

The monitor's power indicator.	See "Troubleshooting the Video Subsystem"
	on page 104.
The keyboard indicators.	See "Troubleshooting the Keyboard" on
	page 105.

The USB diskette drive activity indicator.

The USB CD drive activity indicator.

See "Troubleshooting a Diskette Drive" on page 116.

See "Troubleshooting an Optical Drive" on page 118.

Troubleshooting Your System

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