IBM N51 Series User Manual

Symptom/Error FRU/Action
Power-good light does not
light - fan does not run (see
“Undetermined Problem” on
page 156).
1. Power Supply
2. System Board
3. Any device or adapter
No beep and the computer
is otherwise functional.
1. Speaker Assembly
2. System Board
No beep and nonfunctional
computer.
(See “Undetermined
Problem” on page 156
before replacing any FRUs.)
1. System Board
2. Power Supply
Continuous beep 1. Power Supply
2. System Board
Repeating short beeps 1. Power Supply
2. System Board
3. Keyboard (stuck key)
One long and one short
beep
1. Display Option
Adapter (if installed)
2. System Board
3. Power Supply
One long and two short
beeps
1. Plasma Display Card
2. System Board
3. Power Supply
4. Display Option Adapter
One short beep and a blank
or unreadable display with
no external display
1. Plasma Display
Assembly
2. Plasma Display Cables
3. Plasma Display Card
4. System Board
One short beep and diskette
prompt or a program loads
from the fixed disk drive
1. Diskette Drive
2. System Board
3. Power Supply
LED for fixed disk drive
stays on.
1. Fixed Disk Drive
2. System Board
3. Power Supply
LED for fixed disk drive not
working, but computer is
completely functional.
1. LED Assembly
2. System Board
SCSI ID of the internal fixed
disk drive cannot be set
correctly
1. Set Configuration
2. Internal SCSI Fixed
Disk Drive
3. SCSI ID Switch
000110XX
(See “Memory Checkout” on
page 149 before replacing
any FRUs.)
1. System Board
Memory Module
2. System Board
000111XX
(See “Memory Checkout” on
page 149 before replacing
any FRUs.)
1. Memory Expansion
Kit
2. Memory Expansion
Adapter
000112XX, 000113XX 1. Any Adapter
2. System Board
152 IBM Mobile Systems HMM - Volume 1

IBM N51 Series Specifications

General

Brand	IBM
Model	N51 Series
Category	Laptop
Language	English