Epson ActionPC 7300 User Manual - Page 72

Changing the Jumper Settings

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Changing the Jumper Settings The jumpers on the system board are preset to factory default positions, indicated by an asterisk (*) in the tables below. (See the illustration under "Locating the System Board Components" to locate jumpers.) Use the information in this section to change jumper settings, if necessary. Note Any jumpers not listed in the following tables are for service purposes only. Do not change their settings. Miscellaneous jumper settings Jumper number JP2 JP25 Jumper setting 1-2 * 2-3 Off* On Function L Enables on-board I/O controller Disables on-board I/O controller + Enables PCI IDE controller Disables PCI IDE controller JP49 On JP50 Off* 1-2 * 2-3 * Default setting Clears CMOS memory (resets SETUP values to factory defaults) Normal CMOS values L Enables on-board VGA controller Disables on-board VGA controller L Parallel port ECP mode DRQ jumper-settings Function DRQ1 (DACK1)* DRQ4 (DACK3) 1JP8 1 1-2 1 2-3 1JP18 I 1 2-3 I 1 1-2 I Installing and Removing Options 4-9

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Changing the Jumper Settings
The jumpers on the system board are preset to factory default
positions, indicated by an asterisk (*) in the tables below. (See
the illustration under “Locating the System Board
Components” to locate jumpers.) Use the information in this
section to change jumper settings, if necessary.
Note
Any jumpers not listed in the following tables are for service
purposes only. Do not change their settings.
Miscellaneous jumper settings
Jumper
number
JP2
JP25
JP49
JP50
Jumper
setting
1-2 *
2-3
Off*
On
On
Off*
1-2 *
2-3
L
+
L
L
Function
Enables on-board I/O controller
Disables on-board I/O controller
Enables PCI IDE controller
Disables PCI IDE controller
Clears CMOS memory (resets SETUP values to
factory defaults)
Normal CMOS values
Enables on-board VGA controller
Disables on-board VGA controller
* Default setting
Parallel port ECP mode DRQ jumper-settings
Function
1
JP8
1
JP18
I
DRQ1 (DACK1)*
1
1-2
1
2-3
I
DRQ4 (DACK3)
1
2-3
1
1-2
I
Installing
and Removing Options
4-9