Sony PCV-J150 - Manual (Page 74)

VAIO® Reference Manual 62
Configuration Jumper
There is one user-configurable jumper for CMOS Clear.
The computer ships with CMOS Clear in the Normal position. Do not
change the position of this jumper unless directed by a technical support
person.
OM04588.VSD
CMOS Clear Clear
2-3
Normal
1-2
= default jumper
1 3
CMOS CLR
2