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09-13-2002, 20:31
| #1 (permalink) |
| Freak Poster   Join Date: Jul 2002 Location: Europe Age: 47
Posts: 351
Member: 13827 Status: Offline Thanks Meter: 16 | Nokia 3330 and 6210 network problem Found network and drops.At this time when registering near speakers(I use it for check PA transmiting noise) I hear only : "tick tick tick " -not usual continuos gsm noise ! Wintesla RSSI level OK, TX transmiting power too. Try to replace cobba, ccont, PA,duplex,c109,c508.Rehot hagar,flash--still the same ! And I have two phones 3330 and 6210 with same problem ? After some minute shows "Sim card not accepted" cobba ? change 2 times with faid ! Please any solution ? |
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09-13-2002, 23:00
| #2 (permalink) | |
| No Life Poster  Join Date: Mar 2000 Location: inside NOKIA phone Age: 58
Posts: 1,677
Member: 1060 Status: Offline Thanks Meter: 10 | Re: Nokia 3330 and 6210 network problem TGsm Sound look like your TX output level not enough ! or TCXO out of range , Please try to check (with scope) at TXC ,see that level is ok or not ! and check at connect from PCB to ANTTENNA ! Willy Quote:
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09-14-2002, 14:54
| #3 (permalink) |
| Freak Poster Join Date: Jul 2002 Location: Europe Age: 47
Posts: 351
Member: 13827 Status: Offline Thanks Meter: 16 | Antena Ok ! If tcxo out of range i think RX would be bad TX with wintesla OK, with Sim card not ! If shows "Sim card not acepted" after some minutes - reason cobba ? |
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09-14-2002, 15:25
| #4 (permalink) | |
| No Life Poster Join Date: Mar 2000 Location: inside NOKIA phone Age: 58
Posts: 1,677
Member: 1060 Status: Offline Thanks Meter: 10 | tgsm , Good ,, way to think ! But , here, i give you some idea . Incase , TXCO is offset for 300hz , or supply level too low, then TX /RX offset is same will out of range, then phone send out data, but got wrong CH to receive data , of casue, phone it will try to jump to others CH try again , that is reason why, it become "DROP" or poor signal ! ( Drop signal has many reason ) but most time, phone do not have / not enough outgoing TX power! so phone has set AFC ( auto friquency control ) by COBBA ! and COBBA is do for A/D D/A control , with TXC ( TX power adjust) ! If RX is problem , you need to check path Hager to COBBA , IP/QP , ( let we say MCU and hager control is good) , if IP/QP is good, then from antenna switch -> saw-> hager,, you have to check it Willy Quote:
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09-14-2002, 17:01
| #6 (permalink) | |
| No Life Poster Join Date: Mar 2000 Location: inside NOKIA phone Age: 58
Posts: 1,677
Member: 1060 Status: Offline Thanks Meter: 10 | Tgsm, RAM bad CCONT bad , COBBA bad , MCU bad Willy Quote:
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10-12-2002, 01:38
| #8 (permalink) |
| No Life Poster Join Date: Nov 2001 Location: Slovakia
Posts: 1,005
Member: 7586 Status: Offline Thanks Meter: 11 | @tgsm I have same problem with 8210 and 6210 too. after minute or 2 , restarts and writes SIM CARD NOT ACCEPTED. i've changed COBBA and CCONT, not helped. did u fix your problem? b.r. Pali |
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