Compaq 7000 Series Maintenance And Service Manual page 28

DVD Drive, Hard Drive,
Disk Drive)
Removing DIPS
from vinyl trays
POWER SUPPLY
ASSEMBLY
Removing DIPS
FRONT I/O BOARD
from Styrofoam
SYSTEM BOARD
Removing bubble
COMPONENTS
pack from PCBs
(RTC Battery,
Microprocessor/Heatsink
Assembly)
Packing PCBs in
foam-lined box
NOTE: 700 volts can degrade a product
11,500 V
14,500 V
26,000 V
21,000 V
Preventing Electrostatic Damage to Equipment
Many electronic components are sensitive to ESD. Circuitry design and structure
determine the degree of sensitivity. The following proper packaging and grounding
precautions are necessary to prevent damage:
Protect all electrostatic parts and assemblies with conductive or approved
1.
containers or packaging.
Keep electrostatic-sensitive parts in their containers until they arrive at
2.
static-free stations.
Place items on a grounded surface before removing them from their container.
3.
Always be properly grounded when touching a sensitive component or
4.
assembly.
Place reusable electrostatic-sensitive parts from assemblies in protective
5.
packaging or conductive foam.
Use transporters and conveyors made of antistatic belts and metal roller bushings.
Mechanized equipment used for moving materials must be wired to ground the proper
materials selected to avoid static charging. When grounding is not possible, use an ionizer
to dissipate electric charges.
Preventing Damage to Drives
4,000 V 2,000 V
5,000 V 3,500 V
20,000 V 7,000 V
11,000 V 5,000 V