HP 9020 User Manual

1-4 General Information
Repair Philosophy
The computer repair philosophy consists of early warning of probable failures, three overlapping
levels of diagnostics, service utilities,
and most assembly replacement within 15 minutes.
The computer
is repaired at an assembly replacement level. Parts that are most commonly replaced
are exchange parts
and are on the Computer Support Division (CSD) exchange program. When an
exchange part fails, it should be returned to CSD for repair, and a rebuilt part should be obtained. If
a new part is purchased instead, it is unnecessary to return the failed part. Chapter 5 contains lists of
all replaceable parts. Tables in Chapter 5 also list exchange parts with new and rebuilt part
numbers.
In addition to the standard three levels of Field Service Inventory (FSI) sets, several other sets are
available depending
on the selected options. These are as follows:
• GP-IO liD Card FSI
• HP-IB I/O Card FSI
• ASI I/O Card FSI
• PSI I/O Card FSI
• MUX liD Card FSI
• LAN liD Card FSI
• 98760A Standard Color Graphics Display FSI
• 98770A High Performance Color Graphics Display FSI
• 98780A Monochromatic Display FSI
• 9130K Flexible Disc Drive FSI
Ac ComponentsNoltage Conversion
WARNING
IF IT IS NECESSARY TO REPlACE THE POWER CORD, THE RE-
PlACEMENT CORD MUST HAVE THE SAME POlARITY AS THE
ORIGINAL CORD. OTHERWISE, A SHOCK HAZARD MIGHT EXIST
WHICH COULD RESULT IN INJURY OR DEATH. ALSO, THE
EQUIPMENT COULD BE SEVERELY DAMAGED IF EVEN A RE-
lATIVELY MINOR INTERNAL FAILURE OCCURRED.
The ac module has an attached 6-foot power cord that plugs into an ac outlet to provide primary
power to the computer. Besides the power cord, the ac module contains a line
filter, ac module
cable,
and the on/off power switch/circuit breaker.
The computer
is wired for either 110V or 220V and can be converted from one to the other in the
field. Conversion requires changing the power cord, ac module cable, and power switch. Chapter 4
provides procedures for replacing
all ac components.

HP 9020 Specifications

General

Brand	HP
Model	9020
Category	Desktop
Language	English