Epson Epson - Manual (Page 72)

Changing the Jumper Settings
The jumpers on the system board are preset to factory default
positions, indicated by an asterisk (*) in the tables below. (See
the illustration under “Locating the System Board
Components” to locate jumpers.) Use the information in this
section to change jumper settings, if necessary.
Note
Any jumpers not listed in the following tables are for service
purposes only. Do not change their settings.
Miscellaneous jumper settings
Jumper
number
JP2
JP25
JP49
JP50
Jumper
setting
1-2 *
2-3
Off*
On
On
Off*
1-2 *
2-3
Function
Enables on-board I/O controller
Disables on-board I/O controller
Enables PCI IDE controller
Disables PCI IDE controller
Clears CMOS memory (resets SETUP values to
factory defaults)
Normal CMOS values
Enables on-board VGA controller
Disables on-board VGA controller
* Default setting
Parallel port ECP mode DRQ jumper-settings
Installing
and Removing Options 4-9