IBM N51 Series User Manual

Power Systems Checkout
Note
One or all of the batteries can discharge if there is a
short circuit in the computer.
1. Replace the failing FRU if the power supply problem
is caused by a short circuit.
2. Determine if one (or all) of the batteries have become
discharged. Replace a discharged battery with a
known-good spare (or recharge the main or standby
battery.)
The test procedures for each power supply are found on
the following pages.
 “Testing the AC Adapter” on page 29.
 “Testing the Rechargeable Battery” on page 29.
 “Testing the Backup Battery” on page 30.
 “Testing the Standby Battery” on page 30.
 “Testing the Quick Charger” on page 31.
None of the above? Follow the steps below.
001
DID THE PROBLEM OCCUR ONLY WHEN USING THE
AC ADAPTER?
Yes No
002
Go to Step 004.
003
Go to “Testing the AC Adapter” on page 29. If that does
not correct the problem, replace the system board.
004
DID THE PROBLEM OCCUR ONLY WHEN USING THE
BATTERY?
Yes No
005
Go to Step 011 on page 28.
006
DOES A FULLY-CHARGED BATTERY DISCHARGE
QUICKLY?
Yes No
007
Go to Step 010 on page 28.
Model L40 SX (8543)
27

IBM N51 Series Specifications

General

Brand	IBM
Model	N51 Series
Category	Laptop
Language	English