IBM N51 Series User Manual

Symptom/Error FRU/Action
24XX 1. ThinkPad MultiPort
2. LCD/External Display
3. System Board
80XX 1. System Board
86XX 1. Keyboard
2. System Board
Beep Symptoms
Symptom/Error FRU/Action
No beep or continuous
beeps
(See “Power Systems
Checkout” on page 262
before replacing any FRUs.)
1. System Board
2. DRAM Card
One long and one short
beep
1. DRAM Card
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
One long beep, 3 long
beeps, 3 long 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. DRAM Card
4. System Board
ThinkPad 510 (2604) 265

IBM N51 Series Specifications

General

Brand	IBM
Model	N51 Series
Category	Laptop
Language	English