Sony PCV-L400 - Manual (Page 67)

System Board 59
Configuration Jumpers
The configuration jumpers include CMOS Clear, VGA Enable, and
INTEN.
CMOS Clear (CMOS)
A jumper cap is installed on pins 2 and 3 (Normal) of the CMOS header
when the computer is shipped. Do not move the jumper cap to the CMOS
Clear position unless otherwise directed by a technical support person.
KY0059.VSD
CMOS Clear
1 2 3
Normal