Oki PT340 Guide De L'utilisateur page 48

3. Then Press the FEED button once (to select 1. Setting) enters setting
mode and prints the following setting groups.
Setting
1.Memory Switch 1
2.Memory Switch 2
3.Print
4.Hardware
5.Interface
<Set>
Press FEED button for the number of times
as the same as your selecting item, and
wait more than 1 second.
<Return>
Continue to press FEED button more than
1 second.
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