I swapped my motherboard and now my gps does not lock. I tested the voltage and it measures 0.4 volts between the socket and ground. I have swapped the receiver still the same.
There are 2 pinouts on the board. When I removed the old wire there was a wire bridging the 2 pinouts, one wire to the gps unit connected across the 2 pinouts on the board. I was confused how this was, but assumed it was correct. The board is a kld2
I feel I have connected the wire incorrectly?
Related
Hi All,
I had reviewed the XDA connector wiring diagram, and confused about all the ground pins on sx56. I had order a standard stock serial cable from GOMATIC and it didn't work. Took it apart and rewired to the follow:
SX-56 pin 8 to db9 pin 3,
pin 10 to db9 pin 2
pin 2 to db9 pin 5. (gnd)
Still no go, should I be adding all the gnd pins to db 9 pin 5 gnd
( 5,16,17,18)
cheers,
edmond
Yep, you need all the ground pins shorted to device gnd.
I tryed shorting all the ground pins and my serial cable works fine for polling requirements.
Edmond
I converted my orginal O2 sync lead into a serial cable (seemed a cracking idea at the time).
took the connector apart, used the existing wires, cut the wires coming from the power socket and chucked a 9 pin d type on the other end. i left tx and rx straight so it could be connected easily to the cable (which is crossed) from my friends etrex gps, all works well.
I can't remember which ground i used but i just picked the easiest to re-route a wire to, if you are just doing 3 wire rs232 then you shouldn't need to short the grounds.
Help me psl my IIi can not heard phone conversation when plug sync charger.
I have exactly the same problem.
I bought a retractable sync/charge cable from ebay.
http://stores.ebay.co.uk/PDA-Sync-and-Charge-Cables-and-Crad
However, if the cable is plugged into the phone, then the phone speaker (and I think also the mic) are muted. The cable dosn't even have to be plugged into the PC USB port to cause this problem.
At first I thought this was some incorrect wiring on pin 19 of the connector at the XDA end of the cable. This signal is meant to control whether the sound is driven out of the car kit pins or not. However, this signal was not connected on the connector, which should be ok.
I noticed that if the phone is paced in the original sync cradle, then the pda appears to go into handsfree mode, which would tally with one of the functions of pin 19.
All I can guess is that the s/w in the phone detects a signal on the USB pins and attempts to route sound out via the car kit pins.
Anybody know of a fix for this?
Cheers,
Chris.
I know many people have exactly this problem. It is not a problem of our XDAIIi, it is the problem of the Sync charger. I remember someone has shown how to fix this problem of the sync charger in a Vietnamese mobile phone forum but I don't understand anything 'bout electric so I can not translate it. What a pity!
Hi MrSandman,
I dont speak Vietnamese, but I do know electronics.
If you could post a link to the forum, I may be able to make some sense of it.
Thanks,
Chris.
I have the link but I'm sure u will not understand anything 'cause everything is in Vietnamese. In that topic, one guy said that he could fix that f***ing problem and if anyone wanted to fix it, just brought the sync charger to him. He just shown how to fix it in a few words that no one could understand. But in general, he said: "open the plug head of the sync charger and remove the first "masse" string". Does anyone know what is the "masse string"?
Fixed !!!
This works for my cable - but try this at your own risk!!
After thinking about it some more and re-reading the connector signal descriptions here:
http://wiki.xda-developers.com/index.php?pagename=Connectors
I took another look at the wiring in my cable.
I noticed that pin2 (GND/Sense) was connected to the other GND pins at the XDA end of the cable. The notes in the above web page states this will cause the phone to hang up.
I disconnected this pin from GND and now I can hear phonecalls when the cable is plugged into the phone.
I noticed that pin 5 (Analog GND) was also connected to the other GND pins which is also apparently a bad thing. I disconnected it just in case.
Pins 20,21 and 22 are the 5v positive charge connections. They are not connected in my cable and I wondered about connecting them to the USB 5v signal. I decided to leave it in the end as they may draw too much current form the USB port. The phone does charge anyway - just very slowly.
Hope this helps.
Chris.
Mentioned fix works fine for me
Thanks!
I have the same problem also.. i've read the wiki but did'nt catch well what it saying. Please put in in a simple words step by step what to do..oo please..
2 GND / SENSE
5 ANALOG GND
16 GND
17 GND
18 GND
In my cable connector there were two small red wires soldered to 3 pins (from '2' to '5' and from '5' to all three GND pins which were soldered together as one pin;
The thing is that '2' shouldn't be connected to GND. In wiki there were suggestion not to connect '5' to GND as well (has nothing to do with sound problem).
I removed those red wires and everything is working fine (I'm using it for a month now);
Be careful and good luck!
I've been given a wizard to try to fix - the owner was heaving the 'sticky' headphone switch issue and was poking it with a pin when they broke the socket and now it cann't be 'unstuck' so we need a new headphone socket to solder to the board.
Any ideas? I've checked ebay but nothing so far.
Thanks.
M.S
Hi,
I have an old adpter for a car from Brodit for my old iPaq h2210. I found that the connector is physically the same for my "new" HTC Alpine (Qtek 2020i).
I found that most pinouts from http://pinouts.ru/PDA/ipaq_22p_pinout.shtml seem to match with the connector (small SMD board). The connector is only for Power and serial.
Pin 1-4 are connected together to form "+"
Pin 22,15,10 are solded together to form (obviously) GND
The Pins for RxD and TxD are hidden under the connector (damn small SMD).
Does anybody know the correct pinout of Alpine? Is it the same as http://pinouts.ru/PDA/pda_wallaby_pinout.shtml ?
Which pins do I exactly need to sold together for "+" and GND?
I think I cut the conductor path with a knife and solder together the appropriate pins and sold them together.
Do you think this is correct? First cut the paths for V_ADP and GND and then sold together 20,21,22 for V_ADP and 16,17,18 for GND?
Thank you,
dy/dx
I've seen multiple methods of dock mode being triggered on Android devices recently. Some are using multiple magnets and some are shorting out pins 4 and 5 on the USB connector.
Can anyone elaborate on how it is activated on the DS7?
It's triggered by bridging some pins on the Dell 30 pin connector.
I dont know which pins they are (as the connector is mostly undocumented, or just as much the 3rd party connector makers havnt documented it) but the pins might be for that specific purpose.
I would love to know which pins they are if anyone does know.