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HP Evo n410c Compaq Evo N400c and N410c Notebook PCs - Maintenance and Service - Page 111

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Removal and Replacement Procedures 5.11 Switch Cover Switch Cover Spare Part Number Information Switch cover 231453-001 1. Prepare the notebook for disassembly (Section 5.3). 2. Remove the palm rest (Section 5.5). 3. Remove the keyboard (Section 5.9). 4. Close the notebook. 5. Turn the notebook bottom side up with the rear panel facing forward. 6. Remove the four TM2.0 × 6.0 screws that secure the switch cover to the base enclosure (Figure 5-21). Figure 5-21. Removing the Switch Cover Screws 5-26 Maintenance and Service Guide

Section	Page
Product Description	6
1.1 Models	7
1.2 Features	17
1.3 Clearing a Password	18
1.4 Power Management	19
1.5 Computer External Components	20
1.6 Design Overview	32
Troubleshooting	33
2.1 Computer Setup and Diagnostics Utilities	33
Selecting Computer Setup or Compaq Diagnostics	33
Using Computer Setup	34
Selecting from the File Menu	35
Selecting from the Security Menu	36
Selecting from the Advanced Menu	37
2.2 Using Compaq Diagnostics	39
Obtaining, Saving, or Printing Configuration Information	39
Obtaining, Saving, or Printing Diagnostic Test Information	40
2.3 Troubleshooting Flowcharts	42
Flowchart 2.1 - Initial Troubleshooting	43
Flowchart 2.2 - No Power, Part 1	44
Flowchart 2.3 - No Power, Part 2	45
Flowchart 2.4 - No Power, Part 3	46
Flowchart 2.5 - No Power, Part 4	47
Flowchart 2.6 - No Video, Part 1	48
Flowchart 2.7 - No Video, Part 2	49
Flowchart 2.8 - Nonfunctioning Docking Station (if applicable)	50
Flowchart 2.9 - No Operating System (OS) Loading	51
Flowchart 2.10 - No OS Loading from Hard Drive, Part 1	52
Flowchart 2.11 - No OS Loading from Hard Drive, Part 2	53
Flowchart 2.12 - No OS Loading from Hard Drive, Part 3	54
Flowchart 2.13 - No OS Loading from Diskette Drive	55
Flowchart 2.14 - No OS Loading from CD- or DVD-ROM Drive	56
Flowchart 2.15 - No Audio, Part 1	57
Flowchart 2.16 - No Audio, Part 2	58
Flowchart 2.17 - Nonfunctioning Device	59
Flowchart 2.18 - Nonfunctioning Keyboard	60
Flowchart 2.19 - Nonfunctioning Pointing Device	61
Flowchart 2.20 - No Network or Modem Connection	62
Illustrated Parts Catalog	63
3.1 Serial Number Location	63
3.2 Computer System Major Components	64
3.3 Miscellaneous Plastics Kit Components	72
3.4 Mass Storage Devices	74
3.5 Miscellaneous Spare Parts	76
Removal and Replacement Preliminaries	79
4.1 Tools Required	79
4.2 Service Considerations	80
Plastic Parts	80
Cables and Connectors	80
4.3 Preventing Damage to Removable Drives	81
4.4 Preventing Electrostatic Damage	82
4.5 Packaging and Transporting Precautions	82
4.6 Workstation Precautions	83
4.7 Grounding Equipment and Methods	84
Removal and Replacement Procedures	86
5.1 Serial Number	86
5.2 Disassembly Sequence Chart	87
5.3 Preparing the Notebook for Disassembly	88
5.4 Computer Feet	90
5.5 Palm Rest	91
5.6 Memory Expansion Board	98
5.7 Hard Drive	102
5.8 Mini PCI Communications Board	104
5.9 Keyboard	106
5.10 Real Time Clock (RTC) Battery	110
5.11 Switch Cover	111
5.12 Display	113
5.13 Modem Cable	116
5.14 System Board	121
Specifications	131
Connector Pin Assignments	147
Power Cord Set Requirements	152
3-Conductor Power Cord Set	152
General Requirements	152
Country-Specific Requirements	153
Screw Listing	155