Epson Epson - Manual (Page 75)

Setting the Jumpers
To change a jumper setting, follow these steps:
1. Refer to the illustration under “Locating System Board
Components” to locate the jumpers.
2. If any option cards are installed in your computer, you
may need to remove them to access the jumpers. See
“Removing an Option Card” for instructions.
3. A jumper’s setting is determined by where the jumper is
placed on the pins. Use the table below to identify the pin
settings for 2-, 3-, and 4-pin jumpers. (To identify the pin
numbers, look at the system board under the jumper.)
Jumper positions
Type
2-pin
3-pin
4-pin
Position
On
1-2
Off
2-3
2-3
For 6-pin jumpers, refer to the 4-pin illustrations and set
jumpers accordingly.
4-12 Installing and Removing Options