Compaq 2800 - page 149

A–2 Maintenance and Service Guide

Connector Pin Assignments

Table A-2

RJ-11 Modem

Pin Signal Pin Signal

1Unused 4Unused

2 Tip 5 Unused

3Ring 6Unused

Table A-3

Universal Serial Bus

Pin Signal Pin Signal

1 +5 VDC 3 Data +

2 Data - 4 Ground

268135-002.book Page 2 Thursday, October 24, 2002 4:10 PM

Contents

Main b Maintenance and Service Guide Page Contents 1 Product Description 2 Troubleshooting 3 Illustrated Parts Catalog 4 Removal and Replacement Preliminaries 5 Removal and Replacement Procedures Page Product Description 1.1 Features Page 1.2 Clearing a Password 1.3 Power Management 16 Maintenance and Service Guide 1.4 Computer External Components Figure 1-2. Front and Right Side Components Table 1-6 Front and Right Side Components Maintenance and Service Guide 17 Table 1-6 Front and Right Side Components Figure 1-3. Rear Panel and Left Side Components Table 1-7 Rear Panel and Left Side Components Maintenance and Service Guide 19 Table 1-7 Rear Panel and Left Side Components The computer keyboard components are shown in Figure 1-4 and described in Table 1-8. Figure 1-4. Keyboard Components Maintenance and Service Guide 111 Table 1-8 Keyboard Components 112 Maintenance and Service Guide The computer top components are shown in Figure 1-5 and described in Table 1-9. Hardware Guide Figure 1-5. Top Components Table 1-9 Top Components Maintenance and Service Guide 113 Table 1-9 Top Components 114 Maintenance and Service Guide Figure 1-6. Bottom Components Table 1-10 Bottom Components Maintenance and Service Guide 115 Table 1-10 Bottom Components 1.5 Design Overview Troubleshooting 2.1 Computer Setup and Diagnostics Utilities Selecting Computer Setup or Compaq Diagnostics Selecting from the File Menu Table 2-1 File Menu 24 Maintenance and Service Guide Selecting from the Security Menu Table 2-2 Security Menu Selecting from the Advanced Menu Table 2-3 Advanced Menu 26 Maintenance and Service Guide (continued) Table 2-3 Advanced Menu 2.2 Using Compaq Diagnostics Obtaining, Saving, or Printing Configuration Information Obtaining, Saving, or Printing Diagnostic Test Information Page 210 Maintenance and Service Guide 2.3 Troubleshooting Flowcharts Table 2-4 Troubleshooting Flowcharts Overview Flowchart 2.1Initial Troubleshooting 212 Maintenance and Service Guide Flowchart 2.2No Power, Part 1 Maintenance and Service Guide 213 Flowchart 2.3No Power, Part 2 Flowchart 2.4No Power, Part 3 Maintenance and Service Guide 215 Flowchart 2.5No Power, Part 4 216 Maintenance and Service Guide Flowchart 2.6No Video, Part 1 A YY Maintenance and Service Guide 217 Flowchart 2.7No Video, Part 2 218 Maintenance and Service Guide Flowchart 2.8Nonfunctioning Docking Station (if applicable) Maintenance and Service Guide 219 Flowchart 2.9No Operating System (OS) Loading Flowchart 2.10No OS Loading from Hard Drive, Part 1 Flowchart 2.11No OS Loading from Hard Drive, Part 2 Flowchart 2.12No OS Loading from Hard Drive, Part 3 Maintenance and Service Guide 223 Flowchart 2.13No OS Loading from Diskette Drive NN Flowchart 2.14No OS Loading from CD- or DVD-ROM Drive Flowchart 2.15No Audio, Part 1 226 Maintenance and Service Guide Flowchart 2.16No Audio, Part 2 Maintenance and Service Guide 227 Flowchart 2.17Nonfunctioning Device 228 Maintenance and Service Guide Flowchart 2.18Nonfunctioning Keyboard Maintenance and Service Guide 229 Flowchart 2.19Nonfunctioning Pointing Device Flowchart 2.20No Network or Modem Connection Illustrated Parts Catalog 3.1 Serial Number Location Page Maintenance and Service Guide 33 Page Maintenance and Service Guide 35 Page Maintenance and Service Guide 37 Page Maintenance and Service Guide 39 Page Maintenance and Service Guide 311 Page Maintenance and Service Guide 313 Page Page Page Maintenance and Service Guide 317 Table 3-3 Mass Storage Devices 318 Maintenance and Service Guide 3.5 Miscellaneous Table 3-4 Spare Parts: Miscellaneous (not illustrated) Maintenance and Service Guide 319 Table 3-4 Spare Parts: Miscellaneous (not illustrated) Removal and Replacement Preliminaries 4.1 Tools Required 4.2 Service Considerations Plastic Parts Cables and Connectors 4.3 Preventing Damage to Removable Drives 4.4 Preventing Electrostatic Damage 4.5 Packaging and Transporting Precautions 4.6 Workstation Precautions 4.7 Grounding Equipment and Methods Page Page Page 5.1 Serial Number 5.2 Disassembly Sequence Chart Maintenance and Service Guide 53 (continued) Table 5-1 Disassembly Sequence Chart 5.3 Preparing the Computer for Disassembly Page Page Page Page 5.4 Computer Feet 5.5 Memory Expansion Board Page Page 5.6 Mini PCI Communications Board Page Page 5.7 Connector Cover 5.8 LED Cover Page 518 Maintenance and Service Guide 5.9 Keyboard Keyboards Page Page Page 522 Maintenance and Service Guide 5.10 Display Displays Page Page Page 5.11 Top Cover Page Page Page Page 5.12 Speaker Assembly Page 5.13 Display Release Assembly Page 5.14 TouchPad Page Page 5.15 Fan Page 540 Maintenance and Service Guide 5.16 Processor Processors Page 5.17 Disk Cell RTC Battery Page 5.18 System Board Page Page Page Page 5.19 Modem Cable Page Maintenance and Service Guide 61 Specifications This chapter provides physical and performance specifications. Table 6-1 Computer 62 Maintenance and Service Guide plastic surfaces. The computer operates well within this range of temperatures. Table 6-2 15.0-inch UXGA, TFT Display 64 Maintenance and Service Guide Table 6-3 15.0-inch SXGA+, TFT Display Maintenance and Service Guide 65 Table 6-4 15.0-inch XGA, TFT Display 66 Maintenance and Service Guide Table 6-5 14.1-inch XGA, TFT Display Maintenance and Service Guide 67 Table 6-6 Hard Drives 68 Maintenance and Service Guide Table 6-6 Hard Drives Maintenance and Service Guide 69 Table 6-7 Diskette Drive 610 Maintenance and Service Guide Table 6-8 CD-ROM Drive Maintenance and Service Guide 611 Table 6-9 DVD-ROM D rive 612 Maintenance and Service Guide Table 6-10 CD-RW Drive Maintenance and Service Guide 613 Table 6-11 External AC Adapter Table 6-12 8-cell, Li ion Battery Pack 614 Maintenance and Service Guide Table 6-13 System DMA Maintenance and Service Guide 615 616 Maintenance and Service Guide Maintenance and Service Guide 617 618 Maintenance and Service Guide Maintenance and Service Guide 619 Table 6-16 System Memory Map A Connector Pin Assignments Page Page A4 Maintenance and Service Guide Connector Pin Assignments Table A-5 Parallel Page Page B Power Cord Set Requirements 3-Conductor Power Cord Set General Requirements B2 Maintenance and Service Guide Country-Specific Requirements 3-Conductor Power Cord Set Requirements Notes Page Figure C-1. Phillips M3.0 4.0 Screw Location Page Figure C-3. Phillips M2.0 5.5 Screw Locations Page Figure C-5. Phillips M2.0 10.0 Screw Locations Page Figure C-7. Phillips M2.0 4.0 Screw Locations Page C10 Maintenance and Service Guide Screw Listing Figure C-9. Phillips M2.0 4.0 Screw Locations Table C-4 Phillips M2.0 4.0 Screw (Continued) Screw Listing Maintenance and Service Guide C11 Figure C-10. Phillips M2.0 4.0 Screw Locations Table C-4 Phillips M2.0 4.0 Screw Page Page Figure C-13. Phillips M2.5 9.0 Screw Locations Figure C-14. Phillips M2.0 8.0 Screw Locations Page Page Page Index