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Removal and Replacement Procedures

Maintenance and Service Guide 5–11

5.6 Switch Cover

✎

The switch cover is included in the Plastics and Hardware Kit

(spare part number 251365-001).

1. Prepare the computer for disassembly (Section 5.3).

2. Turn the computer bottom side up with the rear panel

facing you.

3. Remove the two black M2 × 9 screws (Figure 5-9).

Figure 5-9. Removing the Switch Cover Screws

4. Turn the computer top side up with the front facing you.

5. Open the computer as far as it will open.

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 156 157

Maintenance and Service Guide 1
First Edition October 2001 2
Contents 3
3 Illustrated Parts Catalog 4
6 Specifications 5
A Connector Pin Assignments 5
B Power Cord Set Requirements 5
Table 1-1 10
Compaq Notebook Evo N160 10
1.1 Features 13
Product Description 14
1.2 Clearing a Password 15
1.3 Power Management 16
Table 1-2 19
Table 1-3 22
Keyboard Components 22
F1 through F12 22
Figure 1-5. Top Components 23
Table 1-4 23
Top Components 23
Caps lock is on 24
Scroll is on 24
Top Components (Continued) 24
Figure 1-6. Bottom Components 25
Table 1-5 25
Bottom Components 25
Bottom Components (Continued) 26
1.5 Design Overview 27
Troubleshooting 28
Troubleshooting Flowcharts 29
Initial Troubleshooting 30
2.2 No Power, Part 1 31
2.3 No Power, Part 2 32
2.4 No Power, Part 3 33
2.5 No Power, Part 4 34
2.6 No Video, Part 1 35
2.7 No Video, Part 2 36
(if applicable) 37
2.15 No Audio, Part 1 44
2.16 No Audio, Part 2 45
2.17 Nonfunctioning Device 46
2.18 Nonfunctioning Keyboard 47
Illustrated Parts Catalog 50
System Major Components 51
Table 3-1 52
Table 3-2 57
Spare Part Number 251365-001 57
3.4 Mass Storage Devices 58
3.5 Miscellaneous 59
Table 3-4 60
Removal and Replacement 61
Preliminaries 61
4.2 Service Considerations 62
4.3 Preventing Damage to 63
Removable Drives 63
Precautions 64
4.6 Workstation Precautions 65
Procedures 68
5.1 Serial Number 69
Table 5-1 70
Disassembly Sequence Chart 70
Disassembly 71
Drive Sleeve 73
5.4 Memory Expansion Board 75
5.5 Computer Feet 77
5.6 Switch Cover 78
Esc key 1 (Figure 5-10) 79
5.7 Keyboard 80
5.8 Fan Assembly 83
5.9 Processor 85
5.10 Display 87
5.11 Top Cover 91
Removing the Top Cover Screws 93
5.12 Speaker Assembly 95
5.13 Disk Cell RTC Battery 97
Spare Part Number Information 98
5.15 Sub I/O Board 100
5.16 System Board 103
Board Screw 105
Specifications 107
Table 6-1 108
Computer (Continued) 108
Table 6-2 109
14.1-inch XGA, TFT Display 109
Table 6-3 110
13.3-inch XGA, TFT Display 110
Hard Drives 111
Hard Drives (Continued) 112
Table 6-4 113
Diskette Drive 113
Table 6-5 114
CD-ROM Drive 114
Table 6-6 115
DVD-ROM Drive 115
Table 6-7 116
CD-RW Drive 116
Table 6-8 117
AC Adapter 117
Table 6-9 117
8-cell, Li ion Battery Pack 117
Table 6-10 118
System DMA 118
Table 6-11 119
System Interrupts 119
Table 6-12 120
System I/O Addresses 120
Table 6-13 123
System Memory Map 123
Connector Pin Assignments 124
Table A-2 125
RJ-11 Modem 125
Table A-3 125
Universal Serial Bus 125
Table A-4 126
Table A-5 127
Parallel 127
Table A-6 128
External Monitor 128
Table A-7 129
Stereo Speaker/Headphone 129
Table A-8 129
Microphone 129
Power Cord Set Requirements 130
Country-Specific Requirements 131
Screw Listing 133
Table C-2 134
Phillips M3.0 × 4.0 Screw 134
Table C-3 135
Phillips M2.0 × 5.0 Screw 135
Table C-4 138
Phillips M2.0 × 9.0 Screw 138
Table C-5 143
Phillips M2.0 × 10.5 Screw 143
Table C-6 145
Phillips M2.0 × 12.0 Screw 145
Table C-7 146
Phillips M2.0 × 6.5 Screw 146
Table C-8 150

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