Clr Cmos Jumper - Sony PCV-RX640 System Reference Manual

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VAIO Digital Studio System Reference Manual

CLR CMOS 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.
CMOS Clear Jumper settings
Jumper Plug Position
1-2
2-3
✍
The configuration jumpers should never need changing unless otherwise directed by a
technical support or service technician.
Function
Normal
Clear
CMOS Clear
1 2 3