HP Nc6400 - Compaq Business Notebook Maintenance And Service Guide

4–8 Maintenance and Service Guide
Removal and Replacement Preliminaries
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

HP Nc6400 - Compaq Business Notebook Specifications

General

Operating System	Windows XP Professional
Networking	10/100/1000 Gigabit Ethernet
Processor	Intel Core 2 Duo
RAM	Up to 4GB DDR2
Storage	80 GB HDD
Display	14.1-inch WXGA (1280 x 800)
Graphics	Intel GMA 950
Battery	6-cell Lithium Ion
Chipset	Intel 945GM Express
Optical Drive	DVD+/-RW
Wireless	Intel PRO/Wireless 3945ABG
Ports	3 USB 2.0, VGA, headphone, microphone, RJ-11, RJ-45
Slots	ExpressCard/54
Dimensions	13.1 x 9.3 x 1.2 in