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Compaq Evo n160 Maintenance and Service Guide Compaq Evo N160 Series - Page 70

Disassembly Sequence Chart

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Removal and Replacement Procedures 5.2 Disassembly Sequence Chart Use the chart below to determine the section number to be referenced when removing computer components. Table 5-1 Disassembly Sequence Chart Section 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 5.12 5.13 5.14 5.15 5.16 Description Preparing the computer for disassembly Battery pack Hard drive Modular media bay device Memory expansion board Computer feet Switch cover Keyboard Fan assembly Processor Display Top cover Speaker assembly Disk cell RTC battery Mini PCI communications board Sub I/O board System board # of Screws Removed 0 0 1 hard drive retention screw 4 securing hard drive to hard drive sleeve 0 1 0 2 2 4 (spring-loaded and captured by fan assembly) 0 6 12 2 0 0 2 5 Maintenance and Service Guide 5-3

Section	Page
Contents	3
Product Description	6
Models	7
1.1 Features	13
1.2 Clearing a Password	15
1.3 Power Management	16
1.4 Computer External Components	17
1.5 Design Overview	27
Troubleshooting	28
Using the PhoenixBIOS Setup Utility	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
2.8 Nonfunctioning Docking Station (if applicable)	37
2.9 No Operating System (OS) Loading	38
2.10 No OS Loading from Hard Drive, Part 1	39
2.11 No OS Loading from Hard Drive, Part 2	40
2.12 No OS Loading from Hard Drive, Part 3	41
2.13 No OS Loading from Diskette Drive	42
2.14 No OS Loading from CD- or DVD-ROM Drive	43
2.15 No Audio, Part 1	44
2.16 No Audio, Part 2	45
2.17 Nonfunctioning Device	46
2.18 Nonfunctioning Keyboard	47
2.19 Nonfunctioning Pointing Device	48
2.20 Network or Modem Connection Problems	49
Illustrated Parts Catalog	50
3.1 Serial Number Location	50
3.2 Computer System Major Components	51
3.3 Plastics and Hardware Kit Components	57
3.4 Mass Storage Devices	58
3.5 Miscellaneous	59
Removal and Replacement Preliminaries	61
4.1 Tools Required	61
4.2 Service Considerations	62
Plastic Parts	62
Cables and Connectors	62
4.3 Preventing Damage to RemovableDrives	63
4.4 Preventing Electrostatic Damage	64
4.5 Packaging and Transporting Precautions	64
4.6 Workstation Precautions	65
4.7 Grounding Equipment and Methods	66
Removal and Replacement Procedures	68
5.1 Serial Number	69
5.2 Disassembly Sequence Chart	70
5.3 Preparing the Computer for Disassembly	71
5.4 Memory Expansion Board	75
5.5 Computer Feet	77
5.6 Switch Cover	78
5.7 Keyboard	80
5.8 Fan Assembly	83
5.9 Processor	85
5.10 Display	87
5.11 Top Cover	91
5.12 Speaker Assembly	95
5.13 Disk Cell RTC Battery	97
5.14 Mini PCI Communications Board	98
5.15 Sub I/O Board	100
5.16 System Board	103
Specifications	107
Connector Pin Assignments	124
Power Cord Set Requirements	130
3-Conductor Power Cord Set	130
General Requirements	130
Country-Specific Requirements	131
Notes	131
Screw Listing	133