Epson EL 3S/33 Changing the Jumper Settings

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	Jumper
number	setting	Function
J8	1-2*	Enables	COM1	serial	port
	2-3	Disables	COM1	serial	port
J10	1-2*	Assigns COM1 serial port as COM1
	2-3	Assigns COM1 serial port as COM3**
J2	1-2*	Enables	COM2	serial	port
	2-3	Disables	COM2	serial	port
J3	1-2*	Assigns COM2 serial port as COM2
	2-3	Assigns COM2 serial port as COM4**
J7	1-2*	Enables parallel port
	2-3	Disables parallel port
J9	1-2*	Assigns parallel port as LPT1
	2-3	Assigns parallel port as LPT2**
J4	1-2*	Enables game port
	2-3	Disables	game	port

* Factory setting

•* DOS automatically reassigns parallel and serial ports. Check your DOS manual for more information.

Drive	assignment jumper	settings
Drive	assignment		J17	J18	J19	J20
Upper drive is A			2-3	2-3	2-3	2-3
Lower drive is A			1-2*	1-2*	1-2*	1-2*
* Factory setting

3-6Installing and Removing Options