Section 1 Technical Information; Desktop System Unit - NEC POWERMATE 4100M Service Manual

Section 1
Technical Information
The PowerMate Series includes the PowerMate 433D, PowerMate 466D, Power-
Mate 466M, and PowerMate 4100M. The information in this manual applies to all models
except where indicated. Models differ primarily in the chassis, and microprocessor.
This section provides an overview of the PowerMate Series hardware. The basic hardware
for the system includes a system unit, keyboard, and mouse. The "D" in the model name
refers to a desktop style chassis and the "M" refers to the minitower style chassis.
External interface connectors are located in the rear of the system unit and are identified in
Section 2, Setup and Operation. Jumper settings for all of the internal boards are also pro-
vided in Section 2. Appendix A provides the system unit connector pin assignments and
Appendix B provides specifications.
An overview of each of the two system unit styles are described in the following subsec-
tions.

DESKTOP SYSTEM UNIT

The desktop chassis provides an enclosure for the system board, power supply, four storage
device slots, and a five-expansion-slot ISA/VESA Local Bus (VL-Bus™) backboard. The
storage device slots accommodate a 3 1/2-inch diskette drive, a 3 1/2-inch hard disk (1-inch
height), and two 5 1/4-inch storage devices (1.6-inch height). The system ships with a
3 1/2-inch diskette drive and a hard disk drive leaving two 5 1/4-inch storage device slots
available for optional devices. All desktop models share the system unit features shown in
Figure Section 1-1.
Power Lamp
Hard Disk Drive
Busy Lamp
Reset Button
Figure Section 1-1 PowerMate Desktop System Unit Features
5 1/4-Inch Accessible
Slots (available)
3 1/2-Inch Accessible
Slot (contains 1.44-MB
diskette drive)
Power Button
3 1/2-Inch Internal
Hard Disk Drive Slot