DEC DECstation 5000 Model 100 Series, Maintenance Manual

Page: 23 / 269

Basic System Hardware
The basic system hardware includes a system unit with
controls, indicators, and system connectors.
System Unit
The system unit, shown in Figure 1-2, includes the following:
One system module and chassis, which includes
One central processing unit (CPU)
One floating-point unit (FPU)
One small computer system interface (SCSI) controller
One serial line controller
One ThinWire Ethernet controller
Fifteen slots for memory modules
Three slots for optional graphics, SCSI, and ThickWire
Ethernet modules
One metal chassis that holds the system module
One 8-Mbyte memory module connected to the system
module
One power supply, which has three cooling fans
A removable system unit cover and front cover plate
1–4 A Look at DECstation/DECsystem 5000 Model 200 Hardware