User Guide
Table Of Contents
- Contents
- Product Description
- Troubleshooting
- Illustrated Parts Catalog
- Removal and Replacement Preliminaries
- Removal and Replacement Procedures
- 5.1 Serial Number
- 5.2 Disassembly Sequence Chart
- 5.3 Preparing the Computer for Disassembly
- 5.4 Computer Feet
- 5.5 Memory Expansion Board
- 5.6 Mini PCI Communications Board
- 5.7 Disk Cell RTC Battery
- 5.8 Connector Cover
- 5.9 LED Cover
- 5.10 Keyboard
- 5.11 Heat Spreader
- 5.12 Processor
- 5.13 Display
- 5.14 Palm Rest
- 5.15 Diskette Drive
- 5.16 TouchPad Components
- 5.17 Display Release Assembly
- 5.18 Charger Board
- 5.19 Speaker Assembly
- 5.20 Top Cover
- 5.21 Fan
- 5.22 System Board
- 5.23 Modem Cable
- Specifications
- Connector Pin Assignments
- Power Cord Set Requirements
- Screw Listing
- Index
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Removal and Replacement Preliminaries
Maintenance and Service Guide 4–7
■
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.
Table 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
272638-001.book Page 7 Thursday, July 25, 2002 4:21 PM