compaq evo notebook n1000 series User Manual

							4–6Maintenance and Service Guide
Removal and Replacement Preliminaries
4.7 Grounding Equipment and Methods
Grounding equipment must include either a wrist strap or a foot 
strap at a grounded workstation.
■When seated, wear a wrist strap connected to a grounded 
system. Wrist straps are flexible straps with a minimum of 
one megohm ±10% resistance in the ground cords. To 
provide proper ground, wear a strap snugly against the skin 
at all times. On grounded mats with banana-plug connectors, 
connect a wrist strap with alligator clips.
■When standing, use foot straps and a grounded floor mat. 
Foot straps (heel, toe, or boot straps) can be used at standing 
workstations and are compatible with most types of shoes 
or boots. On conductive floors or dissipative floor mats, use 
foot straps on both feet with a minimum of one-megohm 
resistance between the operator and ground. To be effective, 
the conductive strips must be worn in contact with the skin.
Other grounding equipment recommended for use in preventing 
electrostatic damage includes:
■Antistatic tape
■Antistatic smocks, aprons, and sleeve protectors
■Conductive bins and other assembly or soldering aids
■Nonconductive foam
■Conductive tabletop workstations with ground cords of 
one-megohm resistance
■Static-dissipative tables or floor mats with hard ties to 
the ground
■Field service kits
■Static awareness labels
■Material-handling packages
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							Removal and Replacement Preliminaries
Maintenance and Service Guide4–7
■Nonconductive plastic bags, tubes, or boxes
■Metal tote boxes
■Electrostatic voltage levels and protective materials
Table 4-1 shows how humidity affects the electrostatic voltage 
levels generated by different activities.
Table 4-2 lists the shielding protection provided by antistatic bags 
and floor mats.
Ta b l e  4 - 1
Typical Electrostatic Voltage Levels
Relative Humidity
Event 10% 40% 55%
Walking across carpet 35,000 V 15,000 V 7,500 V
Walking across vinyl floor 12,000 V  5,000 V 3,000 V
Motions of bench worker 6,000 V 800 V 400 V
Removing DIPS from plastic tube 2,000 V 700 V 400 V
Removing DIPS from vinyl tray 11,500 V 4,000 V 2,000 V
Removing DIPS from Styrofoam 14,500 V 5,000 V 3,500 V
Removing bubble pack from PCB 26,500 V 20,000 V 7,000 V
Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 V
✎A product can be degraded by as little as 700 V.
Table 4-2
Static-Shielding Materials
Material Use Voltage Protection Level
Antistatic plastic Bags 1,500 V
Carbon-loaded plastic Floor mats 7,500 V
Metallized laminate Floor mats 5,000 V
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							Maintenance and Service Guide5–1
5
Removal and Replacement
Procedures
This chapter provides removal and replacement procedures.
There are 57 screws, in seven different sizes, that must be 
removed and replaced when servicing the computer. Make 
special note of each screw size and location during removal and 
replacement. 
Refer to Appendix C, “Screw Listing,” for detailed information 
on screw sizes, locations, and usage.
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							5–2Maintenance and Service Guide
Removal and Replacement Procedures
5.1 Serial Number
Report the computer serial number to Compaq when requesting 
information or ordering spare parts. The serial number is located 
on the bottom of the computer as indicated in Figure 5-1.
Figure 5-1. Serial Number Location
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							Removal and Replacement Procedures
Maintenance and Service Guide5–3
5.2 Disassembly Sequence Chart
Use the following chart to determine the section number to be 
referenced when removing computer components.
Disassembly Sequence Chart
Section Description # of Screws Removed
5.3 Preparing the computer for 
disassembly
Battery pack 0
Optical drive 2
Hard drive 1 to remove the hard 
drive
4 to remove the hard 
drive from hard drive 
bracket
5.4 Computer feet 0
5.5 Memory expansion board 1
5.6 Mini PCI communications board 1
5.7 Disk cell RTC battery 0
5.8 Connector cover 2
5.9 LED cover 2
5.10 Keyboard 0
5.11 Heat spreader 7
5.12 Processor 0
5.13 Display 6
5.14 Palm rest 6
5.15 Diskette drive 3
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							5–4Maintenance and Service Guide
Removal and Replacement Procedures
5.3 Preparing the Computer for 
Disassembly
Perform the following steps before disassembling the computer:
1. Turn off the computer.
2. Disconnect the AC adapter and all external devices.
Section Description # of Screws Removed
5.16 TouchPad and TouchButton 4 on TouchPad models
5 on Dual Stick models
5.17 Display release assembly 2
5.18 Charger board 3
5.19 Speaker assembly 0
5.20 Top cover 5
5.21 Fan 0
5.22 System board 7
5.23 Modem cable 1
Disassembly Sequence Chart (Continued)
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							Removal and Replacement Procedures
Maintenance and Service Guide5–5
3. Remove the battery pack by following these steps:
a. Turn the computer bottom side up with the left side 
facing forward.
b. Slide and hold the battery release latch 
1 toward the back 
of the computer (Figure 5-2).
c. Use the notch in the battery bay to slide the battery pack 
out of the battery bay 
2.
d. Remove the battery pack.
Figure 5-2. Releasing the Battery Pack
Reverse the preceding procedures to install the battery pack.
Battery Packs
Spare Part Number Information
8 cell, 62 W hour, 4.0 Ah, Li ion
8 cell, 58 W hour, 3.6 Ah, Li ion289053-001
281766-001
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							5–6Maintenance and Service Guide
Removal and Replacement Procedures
4. To remove the battery bezel, slide the bezel straight down 
(Figure 5-3).
Figure 5-3. Removing the Battery Bezel
✎Battery bezels are available with carbon finish for Evo Notebook 
N1000 models and silver finish for Presario 1500 models, and are 
included in the Miscellaneous Plastics/Hardware Kit, spare part 
number 285541-001.
Reverse the preceding procedures to install the battery bezel.
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							Removal and Replacement Procedures
Maintenance and Service Guide5–7
5. Remove the optical drive by following these steps:
a. Turn the computer bottom side up with the left side 
facing forward.
b. Remove the two TM2.5 × 5.0 screws that secure the 
optical drive to the base enclosure (Figure 5-4).
Figure 5-4. Removing the Optical Drive Screws
Optical Drives
Spare Part Number Information
24X Max CD-ROM drive
8X Max DVD-ROM drive
24X Max DVD-ROM/CD-RW combination drive
8X Max DVD-ROM/CD-RW combination drive285526-001
285527-001
304691-001
285529-001
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							5–8Maintenance and Service Guide
Removal and Replacement Procedures
c. Turn the computer top side up with the right side facing 
forward.
d. Insert a paper clip or similar thin metal rod into the 
manual release hole on the front bezel of the optical 
drive
1 (Figure 5-5). Press firmly.
e. Grasp the drive bezel and slide the drive out of the optical 
drive bay 
2.
Figure 5-5. Removing an Optical Drive
Reverse the preceding procedures to install a optical drive.
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