Epson Epson - Manual (Page 4)

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
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