System Overview 1-5
System Chassis

The system chassis is an easy-to-expand, fabricated metal structure. The following

subsections describe the system chassis external view, internal view (BSU only), and

the system board set.

External View

Figure 1-3 shows the front chassis features and controls. Figure 1-4 shows the rear

chassis features and controls.

HI
U
G
J
R S T
Q
A B C D E F
K
L
M
N
O
P
A – Power switch Press to turn system DC power on or off.
B – Power LED When green, power is present in system. When off, power is
turned off or power source is disrupted. See Table 1-1 for a
list and description of the system LED indicators.
C – Status LED When green the system is OK. See Table 1-1 for a list and
description of the system LED indicators.
D – Disk LED When green, internal disk drives are being accessed. See
Table 1-1 for a list and description of the system LED
indicators.
E – Sleep LED When lit, system is in the sleep (power saving) mode.
F – Sleep switch Places the system into the sleep (power saving) mode.
(An operating system supporting sleep mode is required.)
G – Removable media bays (2) Each bay contains one 5.25-inch peripheral device: optional
tape drives, CD-ROM drive, etc.
H – Activity light, diskette drive When lit, drive is in use.
I – Ejector button, diskette drive Press to eject diskette.