Preface

This service and reference manual contains technical information necessary for servicing and repairing Direction™ SP B-Series systems. The manual includes system setup information, procedures for installing options, and troubleshooting. The manual is written for NEC CSD-trained customer engineers, system analysts, service center personnel, and dealers.

The manual is organized as follows:

Section 1 — Technical Information , provides an overview of the computer features, hardware design, interface ports, and internal devices.

Section 2 — Utilities , includes procedures for configuring the system through the Setup utility program and information on the Intel® Processor Serial Number Control utility.

Section 3 — Option Installation, provides installation procedures for adding optional expansion boards, diskette and hard drive storage devices, and system memory.

Section 4 — Maintenance and Troubleshooting , includes recommended maintenance information, lists possible computer problems and their solutions, and has battery replacement procedures.

Section 5 — Disassembly and Reassembly , includes computer disassembly and reassembly procedures.

Appendix A — System Specifications , provides a list of the system specifications including dimensions, weight, environment, safety compliance, power consumption, and memory.

Appendix B — Connector Pin Assignments , provides a list of the internal and external system board connector pin assignments.

Appendix C — System Resources , includes information on IRQ settings and system board jumpers.

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NEC SP B-Series manual Preface