IBM N51 Series User Manual

Symptom/Error FRU/Action
86XX 1. Keyboard
2. System Board
Beep Symptoms
Symptom/Error FRU/Action
One long and one short
beep
1. Memory Option
Two long beeps, 3 short
beeps, and a blank screen
1. External Display, if
installed
2. External Display Power
Cord
3. LCD Assembly
4. System Board
Multiple short beeps 1. Keyboard (stuck key)
One short beep with a
display problem.
(For external displays, see
“External Display Self-Test”
on page 464 before
replacing FRUs.)
1. External Display
2. Display Power Cord
3. LCD Assembly
One long and multiple short
beeps
1. External Display, if
installed
2. External Display Power
Cord
3. LCD Assembly
Miscellaneous Symptoms
Symptom/Error FRU/Action
Blank screen 1. Battery
2. AC Adapter
3. Memory Option
4. System Board
Display problems 1. External Display, if
installed
2. External Display Power
Cord
3. LCD Assembly
LCD contrast not adjustable 1. LCD Assembly
2. System Board
Keyboard problems 1. Reseat cables
2. Keyboard
3. System Board
Mouse problems 1. Reseat cable
2. Mouse
3. System Board
Diagnostic tests hang 1. Battery
2. AC Adapter
3. Memory Option
4. System Board
Blinking cursor only 1. Diskette Drive
2. System Board
238 IBM Mobile Systems HMM - Volume 1

IBM N51 Series Specifications

General

Brand	IBM
Model	N51 Series
Category	Laptop
Language	English