Service Considerations; Tools And Software Requirements; Electrostatic Discharge (Esd) Information - HP Z1 Maintenance And Service Manual

Service considerations

Tools and software requirements

The tools necessary for computer component removal and installation are:
Torx T-15 driver
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Flat blade and cross-tip screwdrivers
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Diagnostics software
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Electrostatic discharge (ESD) information

Generating static
Preventing ESD
equipment
damage
42 Chapter 3 Component replacement information and guidelines
Different activities generate different amounts of static electricity through electrostatic discharge
(ESD). Static electricity increases as humidity decreases.
CAUTION:
Static electricity in the amount of 700 volts might degrade a product.
Event
Walking across carpet
Walking across vinyl floor
Motions of bench worker
Removing bubble pack from PCB
Packing PCBs in foam-lined box
Many electronic components are sensitive to ESD. Circuitry design and structure determine the
degree of sensitivity. The following packaging and grounding precautions are necessary to prevent
damage to electric components and accessories:
Transport products in static-safe containers such as tubes, bags, or boxes, to avoid hand
●
contact.
Protect electrostatic parts and assemblies with nonconductive or approved containers or
●
packaging.
Keep electrostatic-sensitive parts in their containers until they arrive at static-free stations.
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Place items on a grounded surface before removing them from containers.
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When handling or touching a sensitive component or assembly, ground yourself by touching
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the chassis.
Avoid contact with pins, leads, or circuitry.
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Place reusable electrostatic-sensitive parts from assemblies in protective packaging or
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nonconductive foam.
Relative humidity
55% 40%
7,500V 15,000V
3,000V 5,000V
400V 800V
7,000V 20,000V
5,000V 11,000V
10%
35,000V
12,000V
6,000V
26,500V
21,000V