t28 "Insert SIM Card" - GSM-Forum

KKK · 10-07-2002, 18:48

Has t28 that say's "insert SIM Card" with sim card inside can someone tell me where are the resistors from data and Reset which leads to Chip who read Sim card

jero · 10-09-2002, 19:08

be sure that sim card connector is not cold soldered..if it is o.k.
reball the power supply i.c..that is below the pa.if solder balls of this i.c. are broken or cold soldered the i.c.prevents to supply voltage...before reballing process check the components like capacitors and resistors..look up service manual..__jero__

KKK · 10-09-2002, 19:18

I know this but can someone tell me where are these resistors cause i have one service manual but it is written ona hand and I can't understand nothing

jero · 10-09-2002, 23:02

i dont know that if you know this or not...but the components are these ...C730,C731,C732,C733,C734,R730,R731,R732,R733... .AND SOME OF THE VERSIONS HAVE V609...__jero__

iliescu_l · 10-10-2002, 09:37

Can you measure the connection for sim card pins?

10-07-2002, 18:48	#1 (permalink)
KKK Freak Poster Join Date: Dec 1999 Location: Bulgaria Posts: 111 Member: 838 Status: Offline Thanks Meter: 0	t28 "Insert SIM Card" Has t28 that say's "insert SIM Card" with sim card inside can someone tell me where are the resistors from data and Reset which leads to Chip who read Sim card

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10-09-2002, 19:08	#2 (permalink)
jero Freak Poster Join Date: Aug 2002 Location: __inside__ Age: 41 Posts: 102 Member: 14792 Status: Offline Thanks Meter: 1	be sure that sim card connector is not cold soldered..if it is o.k. reball the power supply i.c..that is below the pa.if solder balls of this i.c. are broken or cold soldered the i.c.prevents to supply voltage...before reballing process check the components like capacitors and resistors..look up service manual..__jero__

10-09-2002, 19:18	#3 (permalink)
KKK Freak Poster Join Date: Dec 1999 Location: Bulgaria Posts: 111 Member: 838 Status: Offline Thanks Meter: 0	I know this but can someone tell me where are these resistors cause i have one service manual but it is written ona hand and I can't understand nothing

10-09-2002, 23:02	#4 (permalink)
jero Freak Poster Join Date: Aug 2002 Location: __inside__ Age: 41 Posts: 102 Member: 14792 Status: Offline Thanks Meter: 1	i dont know that if you know this or not...but the components are these ...C730,C731,C732,C733,C734,R730,R731,R732,R733... .AND SOME OF THE VERSIONS HAVE V609...__jero__

10-10-2002, 09:37	#5 (permalink)
iliescu_l Insane Poster Join Date: Jul 2002 Location: romania Age: 43 Posts: 91 Member: 14017 Status: Offline Thanks Meter: 0	Can you measure the connection for sim card pins?