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Troubleshooting
Maintenance and Service Guide 2–7
2.5 No Power, Part 4
Y
N
Continued from
Section 2.4,
No Power, Part 3.
Reseat loose
components and
boards and
replace
damaged items.
Open
computer.
Loose or
damaged
parts?
Y
Close
computer and
retest.
Power on?
Done
N
Replace the following items, if applicable.
Check computer operation after each
replacement:
1. Internal DC-DC converter*
2. Internal AC adapter
3. Processor board*
4. System board*
*Replace these items as a set to prevent
shorting out among components.
- 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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