Compaq 279362-002 1.3 Clearing a Password

1–28 Maintenance and Service Guide

Product Description

1.3 Clearing a Password

If the notebook you are servicing has an unknown password,

follow these steps to clear the password. These steps also

clear CMOS.

1. Prepare the notebook for disassembly (refer to Section 5.3,

“Preparing the Notebook for Disassembly,” for more

information).

2. Remove the RTC battery (refer to Section 5.6, “Disk Cell

RTC Battery”).

3. Wait approximately five minutes.

4. Replace the RTC battery and reassemble the notebook.

5. Connect AC power to the notebook. Do not reinsert any

battery packs at this time.

6. Turn on the notebook.

All passwords and all CMOS settings have been cleared.

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 Page 12 Maintenance and Service Guide 1.1 Models Computer models are shown in Tables 1-1 through 1-4. Table 1-1 Compaq Evo Notebook N620c, N610c, and N600c Model Naming Conventions Maintenance and Service Guide 13 Table 1-1 Compaq Evo Notebook N620c, N610c, and N600c Model Naming Conventions 14 Maintenance and Service Guide Maintenance and Service Guide 15 16 Maintenance and Service Guide Maintenance and Service Guide 17 18 Maintenance and Service Guide Maintenance and Service Guide 19 110 Maintenance and Service Guide Maintenance and Service Guide 111 112 Maintenance and Service Guide Maintenance and Service Guide 113 114 Maintenance and Service Guide Maintenance and Service Guide 115 116 Maintenance and Service Guide Maintenance and Service Guide 117 118 Maintenance and Service Guide Maintenance and Service Guide 119 120 Maintenance and Service Guide Maintenance and Service Guide 121 122 Maintenance and Service Guide Maintenance and Service Guide 123 124 Maintenance and Service Guide Maintenance and Service Guide 125 1.2 Features Page 1.3 Clearing a Password 1.4 Power Management 130 Maintenance and Service Guide 1.5 Notebook External Components Figure 1-2. Front and Right Side Components Table 1-5 Front and Right Side Panel Components Maintenance and Service Guide 131 Table 1-5 Front and Right Side Panel Components 132 Maintenance and Service Guide Figure 1-3. Right Side and Rear Panel Components Evo Notebook N610c Table 1-6 Maintenance and Service Guide 133 Table 1-6 Right Side and Rear Panel Components 134 Maintenance and Service Guide Figure 1-4. Right Side and Rear Panel Components Evo Notebook N600c Table 1-7 Maintenance and Service Guide 135 Table 1-7 Right Side and Rear Panel Components Figure 1-5. Keyboard Components Page 138 Maintenance and Service Guide Hardware Guide Table 1-9 Top Components Page 140 Maintenance and Service Guide Table 1-10 Bottom Components Page 142 Maintenance and Service Guide Table 1-11 Bottom Components 1.6 Design Overview Troubleshooting 2.1 Computer Setup and Diagnostics Utilities Selecting Computer Setup or Compaq Diagnostics Using Computer Setup Maintenance and Service Guide 23 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 Tabl e 2-4 Troubleshooting Flowcharts Overview Flowchart 2.1 - Initial Troubleshooting 212 Maintenance and Service Guide Flowchart 2.2 - No Power, Part 1 Flowchart 2.3 - No Power, Part 2 Flowchart 2.4 - No Power, Part 3 Maintenance and Service Guide 215 Flowchart 2.5 - No Power, Part 4 216 Maintenance and Service Guide Flowchart 2.6 - No Video, Part 1 A YY Maintenance and Service Guide 217 Flowchart 2.7 - No Video, Part 2 218 Maintenance and Service Guide Flowchart 2.8 - Nonfunctioning Docking Station (if applicable) Maintenance and Service Guide 219 Flowchart 2.9 - No Operating System (OS) Loading Flowchart 2.10 - No OS Loading from Hard Drive, Part 1 Flowchart 2.11 - No OS Loading from Hard Drive, Part 2 Flowchart 2.12 - No OS Loading from Hard Drive, Part 3 Maintenance and Service Guide 223 Flowchart 2.13 - No OS Loading from Diskette Drive NN Flowchart 2.14 - No OS Loading from CD- or DVD-ROM Drive Flowchart 2.15 - No Audio, Part 1 226 Maintenance and Service Guide Flowchart 2.16 - No Audio, Part 2 Maintenance and Service Guide 227 Flowchart 2.17 - Nonfunctioning Device Flowchart 2.18 - Nonfunctioning Keyboard Flowchart 2.19 - Nonfunctioning Pointing Device Flowchart 2.20 - No 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 Maintenance and Service Guide 315 Page Maintenance and Service Guide 317 Table 3-2 Miscellaneous Plastics Kit Components Spare Part Number 241439-001 Page Maintenance and Service Guide 319 Table 3-3 Mass Storage Devices Page Maintenance and Service Guide 321 Table 3-3 Mass Storage Devices 322 Maintenance and Service Guide 3.5 Miscellaneous Tabl e 3-4 Spare Parts: Miscellaneous (not illustrated) Maintenance and Service Guide 323 Tabl e 3-4 Spare Parts: Miscellaneous (not illustrated) Removal and Replacement Preliminaries 4.1 Tools Required 4.2 Service Considerations Plastic Parts 4.4 Preventing Electrostatic Damage 4.5 Packaging and Transporting Precautions 4.6 Workstation Precautions 4.7 Grounding Equipment and Methods Page Removal and Replacement Preliminaries Maintenance and Service Guide 47 Table 4-2 lists the shielding protection provided by antistatic bags and floor mats. Tabl e 4- 1 Typical Electrostatic Voltage Levels Page 5.1 Serial Number 5.2 Disassembly Sequence Chart Disassembly Sequence Chart Maintenance and Service Guide 53 (Continued) 5.3 Preparing the Notebook for Disassembly Page 56 Maintenance and Service Guide Media Bay Devices Page 58 Maintenance and Service Guide Hard Drive Page Page Page 5.5 Mini PCI Communications Board Page Page 5.6 Disk Cell RTC Battery Page Maintenance and Service Guide 517 5.7 Keyboard Keyboard 518 Maintenance and Service Guide Keyboard Spare Part Number Information Page Page Page 522 Maintenance and Service Guide 5.8 Memory Expansion Memory Expansion Board Page Page Maintenance and Service Guide 525 5.9 TouchPad TouchPad Components Page 5.10 Switch Cover Page 5.11 Display Page Page 5.12 Top Cover Page Page 5.13 System Board Page Page Page Page Page Page 5.14 Fan Page Page Page 5.15 Heat Sink Page Page Page 5.16 Processor Page 5.17 DC-DC Converter Board Page 5.18 Modem Cable Page Page Maintenance and Service Guide 61 Specifications This chapter provides physical and performance specifications. Tabl e 6-1 Notebook 62 Maintenance and Service Guide plastic surfaces. The notebook operates well within this range of temperatures. Tabl e 6-2 14.1-inch XGA, TFT Display 64 Maintenance and Service Guide Table 6-3 Hard Drives Maintenance and Service Guide 65 Table 6-3 Hard Drives 66 Maintenance and Service Guide Tabl e 6-4 Diskette Drive Maintenance and Service Guide 67 Table 6-5 CD-ROM Drive 68 Maintenance and Service Guide Table 6-6 DVD-ROM Drive Maintenance and Service Guide 69 Table 6-7 CD-RW Drive 610 Maintenance and Service Guide Table 6-8 AC Adapt er Table 6-9 8-cell, Li ion Battery Pack Maintenance and Service Guide 611 Table 6-10 System DMA 612 Maintenance and Service Guide Maintenance and Service Guide 613 614 Maintenance and Service Guide Maintenance and Service Guide 615 616 Maintenance and Service Guide Table 6-13 System Memory Map A Connector Pin Assignments Page Page Page Maintenance and Service Guide A5 Tabl e A- 8 External Monitor A6 Maintenance and Service Guide Tabl e A- 9 Parallel Maintenance and Service Guide A7 A8 Maintenance and Service Guide Maintenance and Service Guide A9 A10 Maintenance and Service Guide 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 Power Cord Set Requirements Maintenance and Service Guide B3 Page Figure C-1. PM2.5 2.5 Screw Location Figure C-2. PM1.5 3.5 Screw Location Figure C-3. PM2.5 5.5 Screw Location Page C6 Maintenance and Service Guide Figure C-5. TM2.5 7.0 Screw Locations Maintenance and Service Guide C7 Figure C-6. TM2.5 7.0 Screw Locations C8 Maintenance and Service Guide Figure C-7. TM2.5 7.0 Screw Locations Maintenance and Service Guide C9 Figure C-8. TM2.5 5.0 Screw Locations Tabl e C-5 Torx T8 Metric 2.5 5.0 Screw C10 Maintenance and Service Guide Figure C-9. TM2.5 5.0 Screw Locations Tabl e C-5 Torx T8 M2.5 5.0 Screw Figure C-10. 7.0 20.0 Bushing Guide Location Figure C-11. TM2.0 4.0 Screw Location Figure C-12. PM2.0 4.0 Screw Location Page Page Index