Service Manual

2. Engage the notches in the cover into mating fingers on the inside of the chassis.
3. Slide the cover forward until the hole in the cover aligns with a matching hole in the front of the chassis.
4. Secure the cover with the screw you removed when you opened the cover (see Figure 1).
In Figure 2, the cover is removed to provide an interior view. Figure 2 also identifies the drive bays. Refer to
this illustration to locate interior features and components discussed later in this manual.
Figure 2. Inside the System
1 Cooling fans (5)
2 IDE-PRI interface cable
3 memory modules (up to 4)
4 IDE-SEC interface cable
5 Control panel cable
6 Riser board
7 PCI retention panel
8 Microprocessor and heat-sink
9 Power supply
10 Hard-disk drives (2)
11 Control panel
12 Diskette drive
13 CD-ROM drive
The system board holds the system's control circuitry, microprocessors, and other electronic components.
Several hardware options such as the microprocessors and memory are installed directly on the system
board. The expansion card riser board accommodates one full-length PCI expansion card and one low-
profile PCI card. The peripheral bays provide space for an integrated 3.5-inch diskette drive and CD-ROM
drive assembly, and two 1-inch high hard-disk drives.
The hard-disk drive bays provide space for two 1-inch IDE hard-disk drives. These hard-disk drives are
connected to an IDE controller on the system board.
The power cables leading from the power supply distribute power to the system board and all installed drives.
For drives such as the diskette drive and the CD-ROM drive, an interface connector connects each drive to
the system board.
During a service procedure, you may be required to change a jumper or switch setting. For information on the
system board jumpers, see "Jumpers
."