GPX MT851B, User Manual, Page: 6 / 16

1. Adjust the Power switch
to the ON position.
2. Press and hold the Menu button.
1. The Auto Power Off settings can
be adjusted from the System
Settings under POW OFF TIME.
2. Set to OFF, 3, 15, 30,
60, and 120 min.
1. The Auto Lock settings can
be adjusted from the System
Settings under DISPLAY.
2. Set to 0, 5, 10, 15, 30, or 60
seconds, or 5, 15, or 30 minutes.
Powering On
Auto Power Off
Auto Lock