Compaq AP250 - Deskpro Workstation - 128 MB RAM, Руководство по техническому обслуживанию и ремонту

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2-2 Compaq Deskpro Workstation AP250 Maintenance and Service Guide
Compaq Confidential – Need to Know Required
Writer: Bruce Sullivan Project: Compaq Deskpro Workstation AP250 Maintenance and Service Guide Comments:
Part Number: 118133-001 File Name: c-ch2 Service Preliminaries.doc Last Saved On: 10/4/99 4:16 PM
WARNING: To reduce the risk of personal injury from hazardous energy levels,
only authorized service technicians should attempt to repair this equipment.
Because of the complexity of the individual boards and subassemblies, no one
should attempt to make repairs at the component level or to make modifications
to any printed wiring board. Improper repairs can create a safety hazard.
CAUTION: The power supply in the Compaq Deskpro Workstation AP250 has an
auxiliary power section. This section is always active as long as the unit is
plugged into a live AC outlet. Be sure to turn off the switch and unplug the
power cord before performing any service work.
CAUTION: To properly ventilate the system, you must provide at least 6 inches
(15 cm) of clearance at the front of the workstation and 3 inches (7.6 cm) at
the back.
IMPORTANT: Any indications of component replacement or printed wiring board
modifications may void any warranty.
Electrostatic Discharge Information
A discharge of static electricity can damage static-sensitive devices or
microcircuitry. Proper packaging and grounding techniques are necessary
precautions to prevent damage. To prevent electrostatic damage:
■ Transport products in static-safe containers such as conductive tubes,
bags, or boxes.
■ Keep electrostatic-sensitive parts in their containers until they arrive at
static-free stations.
■
Cover workstations with approved static-dissipating material. Provide a
wrist strap connected to the work surface and properly grounded tools
and equipment.
■ Keep the work area free of non-conductive materials such as ordinary
plastic assembly aids and foam packing.
■
Always be sure you are properly grounded when touching a
static-sensitive component or assembly.
■ Avoid touching pins, leads, or circuitry.
■
Always place drives PCB assembly-side down.
■ Use conductive field service tools.