Retrotec DM32 User Manual download pdf (Page 60)

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©Retrotec Inc. 2014

8.2 Gauge may get stuck running “Re-calibrate touchscreen” if the

battery gets into a low state

If your gauge runs the “Re-calibrate touchscreen” procedure when you turn it on, it may have discharged to

a too low battery state. To recover from this error, plug the gauge into mains AC power and leave for at

least a half an hour. The charging should bring the gauge up to a minimum power level needed to maintain

the touchscreen calibration. This anomaly has been averted in gauge firmware 2.1.7 or later (1.1.7 for first

generation gauges in the red case).

8.3 Reset if you need to clear the gauge to base settings

If you want to return the gauge to its base settings, as if it just came off the assembly line, you can reset it

using a paper clip. First, turn the gauge OFF using the power key on the front (if possible). Next poke the

end of the paperclip into the small hole marked “Reset” next to the USB connector on the bottom of the

gauge. The splash screen will show as the device restarts.

Firmware versions prior to 1.1.7 ran the [Re-calibrate touchscreen] procedure when the “Reset” was

pressed, but that was discontinued as it contributed to the problem discussed in Section 8.2.

8.4 Flashing screen may appear as gauge recovers from deep

discharge

When the gauge is first plugged into power after the battery has been fully discharged, it may take a few

minutes to charge sufficiently to be able to show the splash screen. If you press the power button and the

screen flashes without showing the splash screen, it means the gauge is busy charging and will start and

show the splash screen shortly.

8.5 Pressing power button may not turn gauge On if battery is fully

discharged

When the gauge is fully discharged, pressing the power button will not start the gauge. It is necessary to

plug the gauge in to mains power using the USB cable and AC power adapter. When the gauge is being

charged, a red light on the front of the gauge (bottom right corner) will be on solidly (not flashing). Once

the light goes off, the gauge is fully charged. From the fully discharged state, plugging USB into a computer

will not provide enough current to charge, the gauge must be plugged into mains power to re-charge.

8.6 Gauge will not reset (run splash screen) while gauge is plugged

into power

When the gauge is plugged in to power (either mains or computer USB), turning the gauge Off is actually

just putting it into a sleep mode. Turning the gauge back On brings it out of sleep mode, back to the Home

screen. In order to perform a hard reset and have the gauge run the splash screen requires the user to

remove the USB cable from the gauge before pressing the power On/Off key.

Situations where the user may need the hard restart include a) recovering from an App failure where the

gauge touchscreen has been Locked by the App, or b) changing between the “Network” types.

8.7 Flashing yellow LED on front means gauge had an internal

malfunction

When the gauge is first powered on, it will go through a self-diagnostic check and check for any problems

with any of the internal hardware modules of the gauge. If an error is discovered in any module, a flashing

yellow LED will display instead of the red for charging, or nothing for charged. Details about the

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Retrotec DM32 User Manual Page 60