HP 620 Compaq 320, 321, 420, 421, 620 and 621 Notebook PCs HP 420 and 620 Not - Page 59

Component replacement procedures, Service tag - driver

Page 59 highlights

Component replacement procedures This section provides removal and replacement procedures. There are many screws, in many different sizes, that must be removed, replaced, or loosened when servicing the computer. Make special note of each screw size and location during removal and replacement. Service tag When ordering parts or requesting information, provide the computer serial number and model description provided on the service tag: (1) Product name: This is the product name affixed to the front of the computer. (2) Serial number (s/n): This is an alphanumeric identifier that is unique to each product. (3) Part number/Product number (p/n): This number provides specific information about the product's hardware components. The part number helps a service technician to determine what components and parts are needed. (4) Model description: This is the alphanumeric identifier used to locate documents, drivers, and support for the computer. (5) Warranty period: This number describes the duration of the warranty period for this computer. Component replacement procedures 51

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Component replacement procedures
This section provides removal and replacement procedures.
There are many screws, in many different sizes, that must be removed, replaced, or loosened when
servicing the computer. Make special note of each screw size and location during removal and
replacement.
Service tag
When ordering parts or requesting information, provide the computer serial number and model
description provided on the service tag:
(1)
Product name: This is the product name affixed to the front of the computer.
(2)
Serial number (s/n): This is an alphanumeric identifier that is unique to each product.
(3)
Part number/Product number (p/n): This number provides specific information about the product's
hardware components. The part number helps a service technician to determine what components and
parts are needed.
(4)
Model description: This is the alphanumeric identifier used to locate documents, drivers, and
support for the computer.
(5)
Warranty period: This number describes the duration of the warranty period for this computer.
Component replacement procedures
51