Jumper Block - Epson ExpressStation User Manual

When you change a jumper setting, remove the jumper from
one set of pins and place it onto another set. You can use your
fingers or fine, needle-nosed pliers. Be careful not to drop the
jumper onto the main system board.
The tables below list the jumper settings available in each

jumper block.

Settings
J3
J5 Settings
Jumper pins
2 - 4 "
4 - 6
J 19 Settings
Factory setting
l
3-4 Installing and Removing Options
Write-protects the diskette drive to prevent
Enables all writes to the diskette drive
Function
Enables the update of the FLASH BIOS memory area
(Note: Because the SETUP program and System
Configuration utility write to the FLASH memory, this
jumper must be set to position 2-4 before you can run
the programs.)
Write-protects the FLASH BIOS memory to prevent
alteration of its data
Function
Indicates that you are using the standard 512KB size
video RAM
Indicates that you have installed additional video RAM
chips to increase your video RAM size to 1 MB
Enables the built-in VGA display adapter
Disables the built-in VGA display adapter