3310 contact service even change cobba? - GSM-Forum

gsmsalers · 04-22-2003, 18:24

Hi.
Today customer brought to me 3310 show CS. I tested with wintesla then it says cobba serial failed. I tried to change more than 10 new cobba still same. Also I changed around component near cobba,and ccont. But stll same. Now only faulty unit suspect is MAD or not?
Bye.

willy · 04-22-2003, 19:20

COBBAIF

Willy

kulibin · 04-22-2003, 20:34

After change Cobba need re-flash phone

gsmsalers · 04-23-2003, 00:54

Willy.
COBBAIF & PCM
What is this? I need service manual name?
Thanks

Springer · 04-23-2003, 10:23

Cobbaif is communication&clocksynchron line to Mad. (cobba A7-B7-D8 pins to Mad2 A6-A7-C6). If cobbaif line is faulty, Mad2 not see cobba.
Remove cobba, and check:
Cobba A7 to J316 (CPU A7)
Cobba D8 to J317 (CpU c6)
and B7 to j315 (CPU A6)

hooi76 · 07-20-2004, 10:20

where is A7 from the cobba and where is J316 from the CPU

keany · 07-20-2004, 10:48

@gsm salers contact service in cobba is 2 kind cobba serial and cobba paralel and you must change 10000x cobba and contact service is still alive.you must see better down cobba on the pinsthey are disconected and your job is to solder them one by one with atention and your problem will resolved
best regards keany

keany · 07-20-2004, 10:50

@gsm salers contact service in cobba is 2 kind cobba serial and cobba paralel and you must change 10000x cobba and contact service is still alive.you must see better down cobba on the pinsthey are disconected and your job is to solder them one by one with atention and your problem will resolved
best regards keany
this post is in 2003 what hapened with you??'

hooi76 · 07-20-2004, 17:03

How to solve the cobba serial problem? i really don't understand the A7 J316 locations of the BGA IC. Please send pictures.

fone · 07-20-2004, 18:26

Springer:
you are good explanation ,you said right

MAJESTIC PIRATE · 07-21-2004, 12:22

refull flash your phone , make sure that your cobba ic is good one , if still the same change cpu .....

hooi76 · 07-22-2004, 16:57

I solve it.CPU prob
i already chage it

SRNOURI · 07-22-2004, 21:57

@gsmsalers
I suggest you to change flash IC and if needed write good flash.Usually when I change cobba and don't solve problem I change flash and give good result.
post result please.

04-22-2003, 18:24	#1 (permalink)
gsmsalers No Life Poster Join Date: Apr 2002 Location: Flash Age: 44 Posts: 1,943 Member: 11208 Status: Offline Thanks Meter: 11	3310 contact service even change cobba? Hi. Today customer brought to me 3310 show CS. I tested with wintesla then it says cobba serial failed. I tried to change more than 10 new cobba still same. Also I changed around component near cobba,and ccont. But stll same. Now only faulty unit suspect is MAD or not? Bye.

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04-22-2003, 19:20	#2 (permalink)
willy No Life Poster Join Date: Mar 2000 Location: inside NOKIA phone Age: 58 Posts: 1,677 Member: 1060 Status: Offline Thanks Meter: 10	COBBAIF Willy

04-22-2003, 20:34	#3 (permalink)
kulibin Freak Poster Join Date: Oct 2002 Age: 41 Posts: 423 Member: 16452 Status: Offline Thanks Meter: 4	After change Cobba need re-flash phone

04-23-2003, 00:54	#4 (permalink)
gsmsalers No Life Poster Join Date: Apr 2002 Location: Flash Age: 44 Posts: 1,943 Member: 11208 Status: Offline Thanks Meter: 11	Willy. COBBAIF & PCM What is this? I need service manual name? Thanks

04-23-2003, 10:23	#5 (permalink)
Springer Freak Poster Join Date: Sep 2002 Location: Nokialand Age: 42 Posts: 147 Member: 15909 Status: Offline Thanks Meter: 0	Cobbaif is communication&clocksynchron line to Mad. (cobba A7-B7-D8 pins to Mad2 A6-A7-C6). If cobbaif line is faulty, Mad2 not see cobba. Remove cobba, and check: Cobba A7 to J316 (CPU A7) Cobba D8 to J317 (CpU c6) and B7 to j315 (CPU A6)

07-20-2004, 10:20	#6 (permalink)
hooi76 No Life Poster Join Date: Dec 2001 Location: In front of my computer Posts: 1,594 Member: 7741 Status: Offline Thanks Meter: 111	where is A7 from the cobba and where is J316 from the CPU

07-20-2004, 10:48	#7 (permalink)
keany No Life Poster Join Date: May 2004 Location: gsm-land Age: 45 Posts: 755 Member: 67419 Status: Offline Thanks Meter: 237	@gsm salers contact service in cobba is 2 kind cobba serial and cobba paralel and you must change 10000x cobba and contact service is still alive.you must see better down cobba on the pinsthey are disconected and your job is to solder them one by one with atention and your problem will resolved best regards keany

07-20-2004, 10:50	#8 (permalink)
keany No Life Poster Join Date: May 2004 Location: gsm-land Age: 45 Posts: 755 Member: 67419 Status: Offline Thanks Meter: 237	@gsm salers contact service in cobba is 2 kind cobba serial and cobba paralel and you must change 10000x cobba and contact service is still alive.you must see better down cobba on the pinsthey are disconected and your job is to solder them one by one with atention and your problem will resolved best regards keany this post is in 2003 what hapened with you??'

07-20-2004, 17:03	#9 (permalink)
hooi76 No Life Poster Join Date: Dec 2001 Location: In front of my computer Posts: 1,594 Member: 7741 Status: Offline Thanks Meter: 111	How to solve the cobba serial problem? i really don't understand the A7 J316 locations of the BGA IC. Please send pictures.

07-20-2004, 18:26	#10 (permalink)
fone Freak Poster Join Date: Nov 2002 Location: MX-KEY is the BEST NOKIA TOOL Age: 49 Posts: 366 Member: 17367 Status: Offline Thanks Meter: 16	Springer: you are good explanation ,you said right

07-21-2004, 12:22	#11 (permalink)
MAJESTIC PIRATE Freak Poster Join Date: Dec 2003 Location: E G Y P T Age: 47 Posts: 336 Member: 45635 Status: Offline Thanks Meter: 20	refull flash your phone , make sure that your cobba ic is good one , if still the same change cpu .....

07-22-2004, 16:57	#12 (permalink)
hooi76 No Life Poster Join Date: Dec 2001 Location: In front of my computer Posts: 1,594 Member: 7741 Status: Offline Thanks Meter: 111	I solve it.CPU prob i already chage it

07-22-2004, 21:57	#13 (permalink)
SRNOURI Freak Poster Join Date: May 2003 Age: 48 Posts: 338 Member: 29870 Status: Offline Thanks Meter: 24	@gsmsalers I suggest you to change flash IC and if needed write good flash.Usually when I change cobba and don't solve problem I change flash and give good result. post result please.