8250 can't flash - F-Bus not working... - GSM-Forum

dimka · 07-23-2002, 21:52

F-Bus not working but M-Bus working ok.
Can this be fixed or CPU is faulty?

Bert · 07-25-2002, 08:42

Hello
Pls explain it more detaily , how can you sure the Fbus is not working ? ( what do you mean for Fbus is it the F-bus cable or phone F-bus interface? )

dimka · 07-26-2002, 21:57

Sorry

I've meant phone F-bus interface!
Phone itself is working ok.
I've tried to reflash it (need to change PPM), but I can't

When I connect it with LogoManager, PC-Locals or WinTesla with M-Bus cable it's working OK, but with F-Bus does not

So I decided that phone F-Bus i-face is damaged. Or maybe not?

AlQuds · 07-27-2002, 04:44

Before doing anything with your phone. Try testing your FBUS cable with another phone.

Blueman1 · 07-27-2002, 04:50

I meet this problem too
The problem is I think in cobba
I ****ed cobba with hot air gun and the fbus is working now,
But be careful with hot air guns, you can kill your phone permanently so I advise you to let your actual ppm.
Best regard
Blueman

dimka · 07-27-2002, 19:57

Quote:

Originally posted by AlQuds
Before doing anything with your phone. Try testing your FBUS cable with another phone.

I've checked my cable first of all, before writing here that F-Bus interface doesn't works.

I'll try to reball COBBA and post results here.

willy · 07-27-2002, 22:17

Dimka,
If you think, phone have problem , from NOKIA service menual, Fbus tx/rx, 3 part link. they are MCU, CCONT, IR

if your cable to flash other phone is working, then it must not cable or SW problem, most time, Fbus TX can not set High after Mbus is set low during flash init. , please try clean phone Fbus contact pad first , then to check CCONT ..

B.R.
Willy

Quote:

Originally posted by dimka
Sorry I've meant phone F-bus interface!
Phone itself is working ok.
I've tried to reflash it (need to change PPM), but I can't
When I connect it with LogoManager, PC-Locals or WinTesla with M-Bus cable it's working OK, but with F-Bus does not
So I decided that phone F-Bus i-face is damaged. Or maybe not?

dimka · 07-28-2002, 00:53

Quote:

Originally posted by willy
Fbus TX can not set High after Mbus is set low during flash init. , please try clean phone Fbus contact pad first , then to check CCONT

Cleaning the board is the first that I've made with this phone to flash it. But no use

So what to check: COBBA or CCONT??? Or both?

willy · 07-28-2002, 01:01

Dimka,

like what i said, from HW of phone FBUS ,
it is link between MCU to CCONT to IR !

so try CCONT first, and then MCU.

give me your phone type and your mail, i send you service menual, you might can learn more

B.R.
Willy

Quote:

Originally posted by dimka

Cleaning the board is the first that I've made with this phone to flash it. But no use

So what to check: COBBA or CCONT??? Or both?

dimka · 07-28-2002, 01:32

Phone is 8250 NSM-3D
my mail is [email protected]

willy · 07-28-2002, 01:38

HI Dimka

Check your mail

B.R.
Willy

Quote:

Originally posted by dimka
Phone is 8250 NSM-3D
my mail is [email protected]

willy · 07-28-2002, 01:57

Dimka,

mail sent.
then you can check BB band, see how FBUS link !
then go to MCU and CCONT to test it , and there is layout test point.....

good luck

Willy

Quote:

Originally posted by dimka
Phone is 8250 NSM-3D
my mail is [email protected]

07-23-2002, 21:52	#1 (permalink)
dimka Freak Poster Join Date: Nov 2001 Location: Omsk, Russia Age: 41 Posts: 121 Member: 7337 Status: Offline Thanks Meter: 0	8250 can't flash - F-Bus not working... F-Bus not working but M-Bus working ok. Can this be fixed or CPU is faulty?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
can't unlock w910i server not work	Haouas	Cruiser Suite	9	08-18-2008 21:12
3330 after flashing keypad (1) not working any can some one help!!!	chinex14	Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L )	4	04-25-2004 18:12
After flashing Blue-tooth not work on 6310	roniri	Nokia Digital Core Technology 4 ( DCT-4 )	19	02-01-2003 18:48
A1018S 99w48 r2a - after Flashing Display is not working , but Phone is Fully Worked	TNT	Old Ericsson Phones & Sony Phones	8	10-16-2000 12:27

07-25-2002, 08:42	#2 (permalink)
Bert No Life Poster Join Date: Oct 1999 Location: Hong Kong Posts: 1,509 Member: 596 Status: Offline Sonork: 100.33096 Thanks Meter: 514	Hello Pls explain it more detaily , how can you sure the Fbus is not working ? ( what do you mean for Fbus is it the F-bus cable or phone F-bus interface? )

07-26-2002, 21:57	#3 (permalink)
dimka Freak Poster Join Date: Nov 2001 Location: Omsk, Russia Age: 41 Posts: 121 Member: 7337 Status: Offline Thanks Meter: 0	Sorry I've meant phone F-bus interface! Phone itself is working ok. I've tried to reflash it (need to change PPM), but I can't When I connect it with LogoManager, PC-Locals or WinTesla with M-Bus cable it's working OK, but with F-Bus does not So I decided that phone F-Bus i-face is damaged. Or maybe not?

07-27-2002, 04:44	#4 (permalink)
AlQuds Insane Poster Join Date: Apr 2002 Location: Denmark Posts: 91 Member: 10692 Status: Offline Thanks Meter: 0	Before doing anything with your phone. Try testing your FBUS cable with another phone.

07-27-2002, 04:50	#5 (permalink)
Blueman1 Insane Poster Join Date: Jul 2002 Location: Hungary Age: 46 Posts: 60 Member: 14006 Status: Offline Thanks Meter: 0	I meet this problem too The problem is I think in cobba I ****ed cobba with hot air gun and the fbus is working now, But be careful with hot air guns, you can kill your phone permanently so I advise you to let your actual ppm. Best regard Blueman

07-28-2002, 01:32	#10 (permalink)
dimka Freak Poster Join Date: Nov 2001 Location: Omsk, Russia Age: 41 Posts: 121 Member: 7337 Status: Offline Thanks Meter: 0	Phone is 8250 NSM-3D my mail is [email protected]