Dell 6100, Инструкция по установке и устранению неисправностей

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7-4 Dell PowerEdge 6100/200 System Installation and Troubleshooting Guide
R
emoving 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.
Figure 7-3. Removing the Front Bezel
I
nside 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.”
tabs (4)
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.