Intermec 6651 Quick Setup Guide

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4.Slide the lock switched the locked position.  If the lock switches cannot
be moved, pull out the battery pack, then reinsert it. 
NOTE:
Both lock switches must be locked or the 6651 won’t
power on.
5.Close the display.
6.Remove the screws from the backup battery cover.
7.Lift up to remove the backup battery cover.
8.Install two CR2032 backup batteries with the plus (+) side up.
Slide the battery to the left and press down.  Avoid touching the other
parts. 
9.Replace the backup battery cover, and attach the screws. 
10. Plug the DC power plug from AC adapter/charger into the DC input
jack on the edge of the 6651.  Connect the AC power cord adapter end
into the AC adapter/charger first, then insert the AC plug into a wall outlet.
After a few seconds, charging starts and the orange LED on the 6651
starts blinking.
Charging time is approximately 2.5 hours.  When charging is completed,
the LED stops blinking, but stays lit. 
11. When charging is completed, disconnect the AC adapter and the
power cord.
NOTE:
Charging can be performed while the device is in
use.
NOTE:
Be sure to disconnect the DC power plug from the
6651 before opening the display fully, or you could
damage the DC power plug or the DC input jack.
Setting up the Device
Open the display.
Place your fingers on the tabs to the left and right of the 6651 center
cover latch, and open the display.