Dead W900 , - GSM-Forum

rjsoo7 · 04-23-2006, 00:05

Hi freinds,

I have one DEAD W900 , and uts 100% Hardware since I checked the
Batterey connectors with Ohmeter and the reading was 0 OHM ( Short CCt )

The customer said that they were trying to donload some pictures and songs from a PC and they connected teh USB cable and the phone stopped
so maybe the reason is from the Wrong USB connecton in the PC side specially with locally assembled Cases where the front USB connector is plugged manually.

If anyone can help me with W900 schematics to see the sonnection diagram
and which Filter is responsible for power.
I also checked the system connector PIN 1 (DCIO) and PIN4 ( GND )
and I had large resistance " Strange "

any help will be highly appriciated.

THanks

elay · 04-25-2006, 18:03

I have same problem

I hoop any one can help us

Ganja47 · 04-25-2006, 18:23

I have same problem

I hoop any one can help us

***Gsm Lab*** · 04-25-2006, 18:50

check this link here is the diagram schematics

good luck

mobilesmith · 04-25-2006, 18:54

hi. all
when DCIO (charging power input) is at low resistance, it may cause your USB datacable or charger to ****! so don't connect to it since u know it is shorting, it is also not possilble to do flashing or charging.
Action to be taken : find the ESD protect IC where nearest to the charging part. remove it & do take resistance measurement again, if ok, just replace it then will solve your problem.

rjsoo7 · 04-25-2006, 23:49

Quote:

Originally Posted by Gsm Lab

check this link here is the diagram schematics

good luck

Hi there ,,

Where is the Link ??!!!

***Gsm Lab*** · 04-27-2006, 20:12

here is that

http://www.lumeamobila.ro/manuale.php
http://www.lumeamobila.ro/placi.php

br

opo · 09-05-2006, 17:20

Man i have search and is nothing in you're links (maybe publicity). SE service manuals are worst in the world, or maybe no good ppl to take out.

04-23-2006, 00:05	#1 (permalink)
rjsoo7 No Life Poster Join Date: Sep 2003 Location: Belgium - SYRIA Posts: 538 Member: 39014 Status: Offline Thanks Meter: 7	Dead W900 , Hi freinds, I have one DEAD W900 , and uts 100% Hardware since I checked the Batterey connectors with Ohmeter and the reading was 0 OHM ( Short CCt ) The customer said that they were trying to donload some pictures and songs from a PC and they connected teh USB cable and the phone stopped so maybe the reason is from the Wrong USB connecton in the PC side specially with locally assembled Cases where the front USB connector is plugged manually. If anyone can help me with W900 schematics to see the sonnection diagram and which Filter is responsible for power. I also checked the system connector PIN 1 (DCIO) and PIN4 ( GND ) and I had large resistance " Strange " any help will be highly appriciated. THanks

04-25-2006, 18:54	#5 (permalink)
mobilesmith Freak Poster Join Date: Feb 2005 Location: mal Age: 46 Posts: 348 Member: 117968 Status: Offline Thanks Meter: 27	possible problem cause.. hi. all when DCIO (charging power input) is at low resistance, it may cause your USB datacable or charger to ****! so don't connect to it since u know it is shorting, it is also not possilble to do flashing or charging. Action to be taken : find the ESD protect IC where nearest to the charging part. remove it & do take resistance measurement again, if ok, just replace it then will solve your problem.

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04-25-2006, 18:03	#2 (permalink)
elay Freak Poster Join Date: Jun 2005 Location: Bulgaria Age: 39 Posts: 166 Member: 154129 Status: Offline Thanks Meter: 4	I have same problem I hoop any one can help us

04-25-2006, 18:23	#3 (permalink)
Ganja47 Freak Poster Join Date: Mar 2003 Location: Scotland uk Posts: 222 Member: 24740 Status: Offline Thanks Meter: 2	I have same problem I hoop any one can help us

04-25-2006, 18:50	#4 (permalink)
*Gsm Lab* Super Moderator Join Date: Feb 2005 Location: United Arab Emirates , Dubai Age: 38 Posts: 4,249 Member: 113928 Status: Offline Sonork: 100.111866 Thanks Meter: 1,838	check this link here is the diagram schematics good luck

04-27-2006, 20:12	#7 (permalink)
*Gsm Lab* Super Moderator Join Date: Feb 2005 Location: United Arab Emirates , Dubai Age: 38 Posts: 4,249 Member: 113928 Status: Offline Sonork: 100.111866 Thanks Meter: 1,838	here is that http://www.lumeamobila.ro/manuale.php http://www.lumeamobila.ro/placi.php br

09-05-2006, 17:20	#8 (permalink)
opo No Life Poster Join Date: Oct 2002 Location: Shenzhen China Age: 68 Posts: 1,074 Member: 16350 Status: Offline Sonork: 110823 Thanks Meter: 42	Man i have search and is nothing in you're links (maybe publicity). SE service manuals are worst in the world, or maybe no good ppl to take out.