Removing the Front Bezel

Use the following procedure to remove the front bezel:

1.Remove the computer covers.

See the previous subsection, “Removing the Com- puter Covers.”

2.Release the two tabs on each side of the bezel (see Figure 7-3).

3.Slide the front bezel straight away from the chassis.

tabs (4)

Figure 7-3. Removing the Front Bezel

Inside the Chassis

In Figures 7-4 and 7-5, the computer cover is removed to provide interior views from the left and right sides. These illustrations also identify features on the front and back

of the computer. Refer to them to locate interior features and components discussed later in this guide.

When you look inside the computer, note the direct current (DC) power cables leading from the power-supply parallel- ing board. These cables supply power to the system board, small computer system interface (SCSI) backplane board, externally accessible drives, and certain expansion cards that connect to external peripherals.

The flat ribbon cables are the interface cables for internal drives. For SCSI devices, the interface cable connects externally accessible SCSI devices and the SCSI back- plane board to a SCSI host adapter either on the system board or on an expansion card.

The system board—the large, vertical printed circuit board at the left side of the chassis near the back—holds the computer’s control circuitry and other electronic compo- nents. Some hardware options are installed directly onto the system board. The system board provides 10 expan- sion-card connectors. The external drive bays provide space for up to four half-height drives, typically diskette drives, CD-ROM drives, or tape drives. The internal drive bays provide space for up to six half-height SCSI hard-disk drives. These drives are connected to the SCSI host adapter via the SCSI backplane board, which manages the drive bays and monitors the drive environment, including voltages and temperatures.

During an installation or troubleshooting procedure, you may be required to change a jumper or switch setting on the system board, the microprocessor module, an expansion card, or a drive. For more information on the jumpers and switches, see Appendix C, “Jumpers, Switches, and Connectors.”

WARNING: Before a trained service technician accesses the inside of the computer, any and all power supplies must be disconnected from their power source, and the cables to the power supplies must also be disconnected. If this computer has more than one power supply, disconnect both power supply cords before servicing to avoid electrical shock.

7-4 Dell PowerEdge 6100/200 System Installation and Troubleshooting Guide

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Dell 200, 6100 manual Removing the Front Bezel, Inside the Chassis, Remove the computer covers