Setting The Jumpers - Epson ActionDesk 4000 User Manual

External cache jumper settings*
Cache size
64KB
128KB
256KB
If you have no external cache installed, the position of these jumpers does
l
not matter.
Processor
Processor type
486DX/DX2
486SX

Setting the Jumpers

If you need to change any jumper settings, follow these steps:
1. Refer to the illustration on page 4-6 to locate the jumpers.
2. If there are any option cards installed in your computer, you
need to remove them to access the jumpers. See page 4-18.
3. A jumper's setting is determined by where the jumper is
placed on the pins. Use the following table to identify the
pin settings for 2-pin, 3-pin, and 4-pin jumpers. To identify
pin 1, look at the system board under the jumper. You will
see a triangle traced on the board at pin 1.
4-8 Installing and Removing Options
type jumper settings
J25 J26
1-2
1-2
2-3 I 1-2
2-3 2-3
J17
1-2.3-4
2-3
J27 J28
2-3
Off
1-2 1 1-2
2-3 2-3
J19
1-2
Off
I
I
I