HP (Hewlett-Packard) nx9420 ユーザーズマニュアル
Maintenance and Service Guide
2–1
2
Troubleshooting
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WARNING: Only authorized technicians trained by HP should repair
this equipment. All troubleshooting and repair procedures are detailed
to allow only subassembly-/module-level repair. Because of the
complexity of the individual boards and subassemblies, do not attempt
to make repairs at the component level or modifications to any printed
wiring board. Improper repairs can create a safety hazard. Any
indication of component replacement or printed wiring board
modification may void any warranty or exchange allowances.
this equipment. All troubleshooting and repair procedures are detailed
to allow only subassembly-/module-level repair. Because of the
complexity of the individual boards and subassemblies, do not attempt
to make repairs at the component level or modifications to any printed
wiring board. Improper repairs can create a safety hazard. Any
indication of component replacement or printed wiring board
modification may void any warranty or exchange allowances.
2.1 Computer Setup
Computer Setup is a preinstalled, ROM-based utility that can be
used even when the operating system is not working or will not
load.
used even when the operating system is not working or will not
load.
✎
Some of the Computer Setup menu items listed in this guide
may not be supported by your computer.
may not be supported by your computer.
✎
Pointing devices are not supported in Computer Setup. You
must use the keyboard to navigate and make selections.
must use the keyboard to navigate and make selections.
✎
An external keyboard connected by USB can be used with
Computer Setup only if USB legacy support is enabled.
Computer Setup only if USB legacy support is enabled.
The information and settings in Computer Setup are accessed
from the File, Security, Diagnostics, and System Configuration
menus.
from the File, Security, Diagnostics, and System Configuration
menus.