Epson Epson ユーザーズマニュアル

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Jumper Settings
The jumpers on the system board have been renumbered, as shown
in the tables below. The factory default settings are indicated by an
asterisk (*).
Miscellaneous    jumper   settings
Parallel port ECP mode DRQ jumper settings
CPU voltage jumper settings
CPU voltage
JP18
3.3V
3-4
3.45V
5-6
3.6V
7-8
4.0V
9-10
5.0V
1-2
3