HX4700 does a hard reset when car turns off power to 12V outlet
I have a HX4700 and use it for navigation (Navigon 4.0) in my car which is a new Volvo S40. When I turn of the cars ignition it takes approximatly 5 seconds until the power to the 12V outlet is turned of by the car. If the PDA is connected when this happens, it does a hard reset and everything is gone. If I disconnect it before the power is turned off, this does not happen...
Has anyone experienced a similar problem or has any advice on this?
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If you can't remember your passcode, you may have to do a hard reset(factory settings) if you have a sync folder on your computer, there is your backup. To do a hard reset: 1. Remove your iPAQ from the cradle, making sure that it's running on the internal battery power.
2. Use the stylus to press down the recessed reset button on the back or side of the iPAQ.
3. While the reset button is held down, press the On/Off button.
4. Release the reset button.
When you press the On/Off button again, your iPAQ turns on and all your files are gone. To avoid repeating this major disaster in the future, you should back up your iPAQ files on your desktop PC. Activesync will generate another folder,and you will have to rename your pocket pc. But once your past that point, open both folders and drad and drop into the new folder. Hope this helps.
Wiring diagram pinout for Navigon GPS charge and concurrent use
5 Volts Direct Current
Conneted to Pin 4 (GND) as pure short, no resistor
Ground, shorted to pin "X"
Use of standard mini-b will place unit in
Data Exchange/Synchronization mode. Use of mini-b with a 4-x pure short
will allow use of Navigation software and concurrent charging. USB power
source must be 1000 ma or above.
The problem lies with the fact that a standard mini usb pin-out has + voltage on pin 1 and ground on pin 5. The navigon is programmed to recognize this as a computer. The navigon charger however has + voltage on pin 4 and ground on pin 5. The reason for navigon doing this as opposed to following the standard pin-out is due to the unit requiring a stronger power supply to charge the battery. USB current output on a computer does not have the capacity to do this. As a consequence, you will have to find a charger that has the right pin-out for this device ( + on pin 4 and - on pin 5 ). The tough thing is, there is no way to tell one from the other, they look identical. However, I have found that chargers with a capacity of 1000 ma or greater are pinned-out like above ( + on pin 4 and - on pin 5 ). Other than using a multimeter to verify the pins, the only thing to do, would be to plug it in and see if it works. Hope this helps.