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HP Evo n1000v Compaq Notebook Series, Evo N1000 and Presario 1500 Maintenance - Page 109

Disk Cell RTC Battery

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Removal and Replacement Procedures 5.7 Disk Cell RTC Battery Disk Cell RTC Battery Spare Part Number Information Disk cell RTC battery 279769-001 1. Prepare the computer for disassembly (Section 5.3). 2. Remove the mini PCI compartment cover (Section 5.6). 3. Remove the RTC battery from its socket on the system board (Figure 5-14). Figure 5-14. Removing the Disk Cell RTC Battery ✎ The computer uses a CR1220 lithium disk cell battery. When replacing the RTC battery, insert the battery with the "+" sign facing up. Maintenance and Service Guide 5-17

Section	Page
Product Description	6
1.1 Models	7
1.2 Features	19
1.3 Clearing a Password	21
1.4 Power Management	22
1.5 Computer External Components	23
1.6 Design Overview	33
Troubleshooting	34
2.1 Computer Setup and Diagnostics Utilities	34
Selecting Computer Setup or Compaq Diagnostics	34
Using Computer Setup	35
Selecting from the File Menu	36
Selecting from the Security Menu	37
Selecting from the Advanced Menu	38
2.2 Using Compaq Diagnostics	40
Obtaining, Saving, or Printing Configuration Information	40
Obtaining, Saving, or Printing Diagnostic Test Information	41
2.3 Troubleshooting Flowcharts	43
Flowchart 2.1 - Initial Troubleshooting	44
Flowchart 2.2 - No Power, Part 1	45
Flowchart 2.3 - No Power, Part 2	46
Flowchart 2.4 - No Power, Part 3	47
Flowchart 2.5 - No Power, Part 4	48
Flowchart 2.6 - No Video, Part 1	49
Flowchart 2.7 - No Video, Part 2	50
Flowchart 2.8 - Nonfunctioning Docking Station (if applicable)	51
Flowchart 2.9 - No Operating System (OS) Loading	52
Flowchart 2.10 - No OS Loading from Hard Drive, Part 1	53
Flowchart 2.11 - No OS Loading from Hard Drive, Part 2	54
Flowchart 2.12 - No OS Loading from Hard Drive, Part 3	55
Flowchart 2.13 - No OS Loading from Diskette Drive	56
Flowchart 2.14 - No OS Loading from CD- or DVD-ROM Drive	57
Flowchart 2.15 - No Audio, Part 1	58
Flowchart 2.16 - No Audio, Part 2	59
Flowchart 2.17 - Nonfunctioning Device	60
Flowchart 2.18 - Nonfunctioning Keyboard	61
Flowchart 2.19 - Nonfunctioning Pointing Device	62
Flowchart 2.20 - No Network or Modem Connection	63
Illustrated Parts Catalog	64
3.1 Serial Number Location	64
3.2 Computer System Major Components	65
3.3 Miscellaneous Plastics/Hardware Kit	79
3.4 Miscellaneous Cable Kit	81
3.5 Mass Storage Devices	83
3.6 Miscellaneous	85
Removal and Replacement Preliminaries	86
4.1 Tools Required	86
4.2 Service Considerations	87
Plastic Parts	87
Cables and Connectors	87
4.3 Preventing Damage to Removable Drives	88
4.4 Preventing Electrostatic Damage	89
4.5 Packaging and Transporting Precautions	89
4.6 Workstation Precautions	90
4.7 Grounding Equipment and Methods	91
Removal and Replacement Procedures	93
5.1 Serial Number	94
5.2 Disassembly Sequence Chart	95
5.3 Preparing the Computer for Disassembly	96
5.4 Computer Feet	104
5.5 Memory Expansion Board	104
5.6 Mini PCI Communications Board	106
5.7 Disk Cell RTC Battery	109
5.8 Connector Cover	110
5.9 LED Cover	111
5.10 Keyboard	113
5.11 Heat Spreader	116
5.12 Processor	119
5.13 Display	121
5.14 Palm Rest	126
5.15 Diskette Drive	130
5.16 TouchPad Components	132
5.17 Display Release Assembly	137
5.18 Charger Board	138
5.19 Speaker Assembly	139
5.20 Top Cover	141
5.21 Fan	145
5.22 System Board	147
5.23 Modem Cable	151
Specifications	153
Connector Pin Assignments	173
Power Cord Set Requirements	179
3-Conductor Power Cord Set	179
General Requirements	179
Country-Specific Requirements	180
Screw Listing	182