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United States January 2, 2003
Presario 1600 Series
Models: 1600T, 1600-XL140, 1600-XL141, 1600-XL142, 1600-XL143,
1600-XL144, 1600-XL145, 1600-XL146, 1600-XL147, and 1600-XL150
Before You Begin Product Description Parts Catalog
Specifications Battery Operations Pin Assignments
Removal Sequence Troubleshooting MSG Index
Removal
Sequence
Electrostatic
Discharge
Service
Considerations
Cables and
Connectors
Preparing the
Computer for
Disassembly
QuikDock
Battery Pack
Palmrest Cover
with TouchPad
Keyboard
QuikDock
Status/Internet
Zone Cover
Internet
Button Board
Heatspreader
Modem
Hard Drive
DisqPlay
Module
Processor
CD or DVD
Drive
Display Panel
Assembly
Upper CPU
Cover
Fan Assembly
RTC Battery
Diskette Drive
Battery
Charger Board
Speaker
Assembly
System Board
Memory
Module
Removal Sequence
Electrostatic Discharge
A sudden discharge of static electricity from a finger or other
conductor can destroy static-sensitive devices or
microcircuitry. Often the spark is neither felt nor heard, but
damage occurs. An electronic device exposed to electrostatic
discharge (ESD) may not seem to be affected at all and will
work perfectly throughout a normal cycle. Although, it may
function normally for a while, it may be degraded in the
internal layers, reducing its life expectancy.
Networks built into many integrated circuits provide some
protection, but in many cases, the discharge contains enough
power to alter device parameters or melt silicon junctions.
Generating Static
The table shows activities that generate static electricity and
the associated electrostatic voltage level.
Typical Electrostatic Voltages
Event
Relative Humidity
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
tubes
2,000 V 700 V 400 V
Removing DIPS from vinyl
trays
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
PCBs
26,000 V 20,000 V 7,000 V
Packing PCBs in foam-lined
box
21,000 V 11,000 V 5,000 V
NOTE:
700 volts can degrade a product.
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