DuraMax™ Tablet 8.4 - Grayhill, Inc.

Indicators
DuraMax Tablet 8.4 Product Guide v2.01
The tri-color red/amber/green indicator on the right side of the DuraMax Tablet 8.4’s external
keypad indicates power status:
Table 2. Power Indicator States
Power Indicator Color Condition
Green Fully charged – running on external power
(no light) Running on battery with adequate power
Amber Charging battery
Blinking Red Battery power running low, or dead battery
Solid Red Battery damaged, or improperly installed
When the Tablet’s power indicator starts blinking red, approximately 15 minutes remain until
the battery cuts out and the Tablet shuts down. In this case, even if the Tablet shuts down, just
plug the Tablet into a power source to start recharging the battery.
Note: A dead battery pack can be indicated by a blinking red indicator, as the battery often is still supplying
a little current, even if the Tablet cannot run on the power it supplies. When a battery pack’s capacity has
faded to the point of non-usability, replace it with a fresh battery pack following the steps in the next section.
A power indicator displaying a constant red light indicates the Tablet cannot communicate with
the battery, either because the battery pack was improperly installed or because the battery is
damaged. In this case, try reinstalling the battery pack. If the indicator still shows a solid red
after reinstallation, the battery may be damaged and should be replaced with a fresh battery
pack. To reinstall or replace a battery, use the instructions in the next section as a guide.
Note: The indicator on the left side of the keypad is another tri-color indicator that is available for use by
custom application level software.
Field Swapping Battery Packs
Note: As batteries are charged and discharged, they naturally lose capacity. After about 300 full charges
and discharges at room temperature, batteries will have about 75% of their initial capacity available. When
a battery's capacity drops below your needs, the battery will need to be replaced. Charging and discharging
at temperature extremes will shorten the capacity of batteries. If batteries are not fully discharged before
recharging, they will retain a much higher capacity than if they are fully discharged before recharging.
When you need to replace the battery:
1. Close all open applications, saving application data to flash memory (My Computer |
Storage) or to a storage card in the PC Card slot (My Computer | Storage Card).
Note: Save your data, since any data in RAM will most likely be lost during this procedure.
2. Press the Power button to place the Tablet in Suspend mode (see Table 3 on page 10).
3. Using a dime or a penny, remove the two slotted screws securing the battery pack to the
bottom rear of the Tablet.
4. Lift the battery pack up and out of the battery bay.
5. Insert a fresh Tablet battery pack into the battery bay, ensuring that the alignment tabs on
the battery fit into the alignment slots and that the battery is seated in the bay.
6. With a dime or a penny, reinstall the two slotted screws in the screw holes at the bottom of
the battery pack.
7. Press the Power button briefly to reactivate the Tablet.
© 2004 Grayhill, Inc., Confidential and Proprietary Page 9