Contents

4.6 Workstation Precautions . . . . . . . . . . . . . . . . . . . . . . 4–5 4.7 Grounding Equipment and Methods . . . . . . . . . . . . . 4–6

5 Removal and Replacement Procedures

5.1 Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2 5.2 Disassembly Sequence Chart . . . . . . . . . . . . . . . . . . 5–3 5.3 Preparing the Computer for Disassembly . . . . . . . . . 5–4 5.4 Hard Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6 5.5 Computer Feet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–10 5.6 Memory Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–10 5.7 Mini PCI Communications Card. . . . . . . . . . . . . . . 5–13 5.8 Optical Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–16 5.9 Switch Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–18 5.10 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–24 5.11 Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5–30 5.12 Base Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–35 5.13 USB/S-Video Controller Board . . . . . . . . . . . . . . 5–40 5.14 Speaker Assembly. . . . . . . . . . . . . . . . . . . . . . . . . 5–42 5.15 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–44 5.16 Menu Control Button Board . . . . . . . . . . . . . . . . . 5–45 5.17 Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–48 5.18 Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–50 5.19 Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–52 5.20 System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–54 5.21 LED Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–62

6 Specifications

AConnector Pin Assignments

BPower Cord Set Requirements

CScrew Listing

Index

iv

Maintenance and Service Guide

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HP DV1270 manual Removal and Replacement Procedures