9-18 User’s Manual
Troubleshooting
Memory expansion
Refer also to Chapter 8, Optional Devices, for information on installing 
memory modules.
When a memory error occurs, a sequence of beeps is heard.
Long beep One-second beep
Short beep 0.5-second beep, followed by 0.5-second silence
No sound No sound for one second
Problem Procedure
You hear a pattern of 
beeps.
(Two beeps: a long 
beep followed by a 
short beep, indicates 
there is a defective 
memory module in slot 
A.
Three beeps: a long 
beep followed by two 
short beeps indicates 
there is a defective 
memory module in slot 
B.
When both patterns 
are heard, both 
memories in slot A 
and B are defective)
Make sure the memory module installed in the 
expansion slot is compatible with the computer.
If an incompatible module has been installed,  
follow the steps below.
1. Disconnect the AC adaptor and all peripheral 
devices.
2. Remove the battery.
3. Remove the memory module.
4. Replace the battery and/or connect the AC 
adaptor.
5. Turn on the power.
If problems persist, contact your dealer.
The computer will not 
start and the following 
sequence of beeps 
sounds:Long, short, 
short, short, ...
There is a total of 2GB of memory in the 
memory slots.
The computer will not 
start and the following 
sequence of beeps 
sounds:Long, short, ...
Unsupported memory (with SPD) is installed in 
Slot A.
The computer will not 
start and the following 
sequence of beeps 
sounds:Long, short, 
short, ...
Unsupported memory (with SPD) is installed in 
Slot B.