PDA

View Full Version : Siemens c25 can't detect sim card and another is no speaker



gsmsalers
04-01-2003, 03:24 AM
Hi.
I have 2 siemens c25 that one is don't detect sim card. Changed sim connector, case, dialog,cpu. Still same. Software is ver 61.
Also another is perfect except no voice on speaker. Changed speaker, it seems some line cut. Need solution like in x35 no speaker.people still like those reliable old good siemens. But I can't repair most cases. Is there anyone can give me complete service manual or full diagramm, recomendation for that.

Thanks for attnetion.

mkwatis
13-01-2003, 07:52 AM
I.c25 speaker,use low pressured smd rework station to remove audio ic pmb 2709.
II. for insert sim card replace the power regulator ZU4 (5legs item)just near PMB 2905 on its top right hand side from your circuit view.
III.x35 speaker, loop with INSULATED thin wire direct to the speaker from C11 &C13 on its left hand side form your view.this C11C13 are besides RF interface in power suplly part
IV.overall speker solution,from keypad upright go to the charger conector on phones bottom.instead of using hands free use pin 13+14 to speaker direct loop insulated wire.12+11 loop to mic direct with insulated wire while no ;10 must connected to any phones ground in order to switch hands free. on using this you must test your phone if works to hands free!:D and enjoy

mkwatis
13-01-2003, 07:58 AM
I.c25 speaker,use low pressured smd rework station to remove audio ic pmb 2709.
II. for insert sim card replace the power regulator ZU4 (5legs item)just near PMB 2905 on its top right hand side from your circuit view.
III.x35 speaker, loop with INSULATED thin wire direct to the speaker from C11 &C13 on its left hand side form your view.this C11C13 are besides RF interface in power suplly part
IV.overall speker solution,from keypad upright go to the charger conector on phones bottom.instead of using hands free use pin 13+14 to speaker direct loop insulated wire.12+11 loop to mic direct with insulated wire while no ;10 must connected to any phones ground in order to switch hands free. on using this you must test your phone if works to hands free!:D and enjoy

Scataface
19-01-2003, 02:55 AM
for c35 no speaker use this solusion,the phone work 100%

gsmsalers
19-01-2003, 11:41 AM
Hi.
Thanks for helping. But I was unable to access to pciture file which you attached. So please relink this file.
Thanks

mkwatis
19-01-2003, 12:47 PM
Originally posted by gsmsalers
Hi.
Thanks for helping. But I was unable to access to pciture file which you attached. So please relink this file.
Thanks

Thx im going to prepare good narable attachment for you

:D dont worry my call +255 741 358 358 also sms is better :p

Scataface
19-01-2003, 06:01 PM
Tis file is on
http://eh.student.utwente.nl/gsm-files/Siemens%20x35%20-%20repair%20connection%20speaker%20-%20by%20EH.jpg
Good work
Soory for my English