Oki ES4192dn User Manual - page 1053
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Changing the Super G3 Setting
If a fax transmission or reception fails, set the Super G3 setting to [OFF].
1.
Press [Device Settings] on the touch panel.
2.
Press [Admin Setup].
3.
Enter the administrator password, and then press [OK].
The factory default password is "aaaaaa".
4.
Press [User Install].
5.
Press [Super G3] to change the display to [ON].
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