Dell R805 manual Recommended Tools, Inside the System, Front Bezel

Recommended Tools

You may need the following items to perform the procedures in this section:

•Key to the system keylock

•#1 and #2 Phillips screwdrivers

•T-10 Torx driver

•Wrist grounding strap

Inside the System

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

In Figure 3-1, the bezel and system cover are removed to provide an interior view of the system.

Figure 3-1. Inside the System

1	SAS controller daughter card	2	sideplane
3	memory modules (up to 16)	4	hot-pluggable power supply cooling fans (2)
5	cooling shrouds (3)	6	riser 2 (PCIe slots 3 and 4)
7	power supplies (1 or 2)	8	LOM daughter card
9	RAC daughter card	10	riser 1 (PCIe slots 1 and 2)
11	heatsinks/microprocessors (2)	12	hot-pluggable processor fans (4)
13	slimline optical drive (optional)	14	SAS/SATA backplane
15	RAID battery (optional battery-cached SAS RAID controller only)	16	SAS or SATA hard drives (1 or 2)
17	control panel

The system board holds the system's control circuitry and other electronic components. Several hardware options, such as the microprocessors and memory, are installed directly on the system board. Each expansion-card riser accommodates one full-length and one half-length PCIe expansion card.

The system provides space for an optional optical drive. The optical drive connects to the SATA controller on the system board. For more information, see Optical Drive.

The hard-drive bays provide space for up to two 2.5-inch SAS or two 2.5-inch SATA hard drives. The hard drives connect to a SAS controller card through the SAS/SATA backplane board. For more information, see Hard Drives and SAS Controller Daughter Card.

During an installation or troubleshooting procedure, you may be required to change a jumper setting. For more information, see System Board Jumpers.

Front Bezel

A lock on the bezel restricts access to the power button, optical drive, and hard drive(s). A control panel LCD located on the front panel and accessible through the front bezel displays the system's status. See Figure 3-2.