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2–12 Maintenance and Service Guide

Troubleshooting

2.9 No Operating System (OS) Loading

No OS loading

from Hard drive,

go to

Section 2.10.

Reseat power

cord in docking

station and

power outlet.

No OS loading

form Diskette

drive, go to

Section 2.13.

No OS loading

from CD- or

DVD-ROM drive,

go to

Section 2.14.

No OS loading

from Network,

go to

Section 2.20.

Note: Before beginning, always check

cable connections, cable ends, and drives

for bent or damaged pins.

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 156 157

Maintenance and Service Guide 1
First Edition (June 2001) 2
Contents 3
3 Illustrated Parts Catalog 4
6 Specifications 5
A Connector Pin Assignments 5
B Power Cord Set Requirements 5
C Screw Listing 5
Table 1-1 7
Compaq Notebook Evo N150 7
Features 10
1.2 Clearing a Password 11
1.3 Power Management 12
Table 1-2 13
Table 1-3 15
Product Description 17
Table 1-4 18
Keyboard Components 18
F1 through F12 18
Figure 1-5. Top Components 19
Figure 1-6. Bottom Components 21
1.4 Design Overview 23
Troubleshooting 24
Troubleshooting Flowcharts 26
2.1 Initial Troubleshooting 27
2.2 No Power, Part 1 28
2.3 No Power, Part 2 29
2.4 No Power, Part 3 30
2.5 No Power, Part 4 31
2.6 No Video, Part 1 32
2.7 No Video, Part 2 33
(if applicable) 34
2.15 No Audio, Part 1 41
2.16 No Audio, Part 2 42
2.17 Non Functioning Device 43
2.18 Non Functioning Keyboard 44
Illustrated Parts Catalog 47
Table 3-1 49
Components 54
3.5 Cable Kit Components 56
3.6 Mass Storage Devices 57
3.7 Miscellaneous 58
Removal and Replacement 60
Preliminaries 60
4.3 Preventing Damage to 61
Removable Drives 61
Precautions 63
4.6 Workstation Precautions 64
Table 4-1 66
Table 4-2 66
Static-Shielding Materials 66
Procedures 67
5.1 Serial Number 68
Table 5-1 69
Disassembly Sequence Chart 69
Disassembly 70
5.4 Computer Feet 70
5.5 Hinge Covers 71
5.6 Keyboard 72
5.7 Display 74
5.8 EMI Shield 76
5.9 Top Cover 77
5.10 TouchPad 81
5.11 Speakers 84
5.12 Microphone 87
5.13 Display Lid Switch Board 89
5.14 Heat Sink 90
5.15 Infrared Board 92
5.16 System Board 94
(Figure 5-21) 97
(Figure 5-22) 98
5.17 PC Card Assembly 99
5.18 Mini PCI Board 101
5.19 Disk Cell RTC Battery 103
Specifications 105
(Continued) 106
Table 6-2 107
14.1-inch XGA, TFT Display 107
Hard Drives 108
Table 6-3 108
Table 6-4 110
Diskette Drive 110
Table 6-5 111
CD-ROM Drive 111
Table 6-6 112
DVD-ROM Drive 112
Table 6-7 113
AC Adapter 113
Table 6-8 114
Battery Packs 114
Table 6-9 115
System DMA 115
Table 6-10 116
System Interrupts 116
Table 6-11 117
System I/O Addresses 117
Table 6-12 120
System Memory Map 120
Connector Pin Assignments 121
Table A-3 122
External Keyboard/Mouse 122
Table A-4 122
RJ-11 Modem 122
Table A-5 123
RJ-45 Network Interface 123
Table A-6 123
Universal Serial Bus 123
Table A-7 124
Table A-8 125
External Monitor 125
Table A-9 126
Parallel 126
Power Cord Set Requirements 127
Country-Specific Requirements 128
Screw Listing 130
Table C-1 131
M2.5 × 7.0 Screw 131
Table C-2 135
M2.5 × 8.0 Screw 135
Table C-3 136
M2 × 5.5 Screw 136
Table C-4 137
M2.5 × 4.5 Screw 137
Table C-5 141
M2 × 12.5 141
Table C-6 142
M2.5 × 4.0 Screw 142
Table C-7 144
M2.5 × 3.0 Screw 144
Table C-8 145
M2 × 6.0 Screw 145
Table C-9 146
M1 × 4.0 Screw 146
Table C-10 147
M2 × 4.0 Screw 147
Table C-11 149
M2 × 14.5 Screw 149
Table C-12 150
M2 × 5.0 Screw 150
Table C-13 151
5.0 mm Screwlock 151

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