Changing The Jumper Settings - Epson EL 3S/33 User Manual

Changing the Jumper Settings

The main system board in your computer has a number of
jumpers which control certain functions. These jumpers are
preset at the factory to default positions; however, you can use
the information in the following tables to change their function,
if necessary:
Port jumper settings
Jumper
number
J8
J10
J2
J3
J7
J9
J4
* Factory setting
* DOS automatically reassigns parallel and serial ports. Check your DOS
l
manual for more information.
Drive assignment
Drive assignment
Upper drive is A
Lower drive is A
* Factory setting
3-6
Installing and Removing Options
Jumper
Function
setting
Enables COM1 serial port
1-2*
Disables COM1 serial port
2-3
Assigns COM1 serial port as COM1
1-2*
Assigns COM1 serial port as COM3**
2-3
Enables COM2 serial port
1-2*
Disables COM2 serial port
2-3
1-2* Assigns COM2 serial port as COM2
2-3 Assigns COM2 serial port as COM4**
Enables parallel port
1-2*
Disables parallel port
2-3
1-2* Assigns parallel port as LPT1
2-3 Assigns parallel port as LPT2**
Enables game port
1-2*
Disables game port
2-3
settings
jumper
J18
J17
2-3 2-3
1-2* 1-2*
J19 J20
2-3 2-3
1-2*
1-2*