Retrotec DM-2 - Manual (Page 10)

Page 10 of 72
©Retrotec Inc. 2012
“Rechargeable” under “Battery Type” otherwise the charger will not work. If you choose to use non
rechargeable batteries such as Lithium Ion, ensure the “Battery Type” is set to “Not Rechargeable”.
1. Using a small Phillips screwdriver, open the lower back panel of the DM-2.
2. Remove the four old AA batteries and recycle them at a participating collection center.
3. Install four new AA batteries, making sure to align them correctly, and ensuring that the
contacts are secure against both the positive and negative ends of each battery.
4. Replace the battery compartment panel and securely tighten the screw.
If a different type of battery is used (i.e. change from rechargeable to non-rechargeable), make sure to
change the battery type in the Setup Menu of the DM-2.
To select proper battery type
1. Press [Setup].
2. Scroll to "Battery Type" and select "Rechargeable" or "Not Rechargeable" as needed.
3. Press [Exit].
1.2.6 View the remaining battery power
The DM-2 features a battery health indicator, displaying the current status of the battery on the main
screen. The indicator is located in the upper-left corner of the display.
1. Turn the gauge on by pressing [On/Off].
2. The splash screen is displayed.
3. Press [Exit] to view the main screen. The battery power indicator is in the top left.
Figure 2: Splash screen and the main screen with battery life indication in the top left.
Batteries will last longer if the backlight and auto-zero features are turned off, and if the gauge is
manually turned off when not in use.
1.3 Resetting the Gauge
If the DM-2 ever becomes frozen, or stops responding, it can be reset. Depending on the age of the
gauge, there are two ways to reset a gauge.
To reset a DM-2 with the Reset button
1. Press the Reset button. (The Reset button is located at the back of the gauge)
2. The gauge should turn on.
3. If pressing the Reset button on the DM-2 fails to reset the gauge, the batteries may need to
be replaced or plugged into DC supply