wired 8250 rssi -56 no network. - GSM-Forum

baraka42 · 02-29-2004, 15:31

hi,

8250 with no network at all. rssi is -56. try to upgrade-downgrade, full flash,

same result. it,s from cpu problem ? where ?

thanks n w.b.r.

willy · 03-01-2004, 17:57

it IP to QP not same level from Hager to COBBA
try to check any line cut in RF IC side

ZetMen · 03-01-2004, 18:46

if net moniter showing NSPS ( no signal power save) !
then it mean Hager to COBBA then IP/QP signal is not given !
or COBBA can not do good demod that wave !

so first you have to see that IP/QP wave is ok or not !
then if not, go to check VRX from CCONT supply to Hager !

also you can try to measuer that TX power out going level and frq is ok or not !
if TX frq and level is ok, then it mean COBBA is ok, and PLL loop from ahger to VCO is OK!

then continue, that you have to check that antenna switch , saw fileter to Hager !

if all is ok, then you go to check MAD to Hager via SDATA, SENA, SCLK !

you might need have oscilliscope to "see" !

baraka42 · 03-01-2004, 19:04

thank you very much Mr. willy,

i hope that only you solve this problem for me. and i think now i can solve this phone
by your $$$ help.

@ZetMen,

thanks for detail.

thanks again you2.

W.B.R.

02-29-2004, 15:31	#1 (permalink)
baraka42 No Life Poster Join Date: Aug 2002 Location: india Age: 63 Posts: 1,476 Member: 14578 Status: Offline Thanks Meter: 831	wired 8250 rssi -56 no network. hi, 8250 with no network at all. rssi is -56. try to upgrade-downgrade, full flash, same result. it,s from cpu problem ? where ? thanks n w.b.r.

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03-01-2004, 17:57	#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	it IP to QP not same level from Hager to COBBA try to check any line cut in RF IC side

03-01-2004, 18:46	#3 (permalink)
ZetMen Freak Poster Join Date: Sep 2002 Location: Cyprus Age: 42 Posts: 429 Member: 15149 Status: Offline Thanks Meter: 61	if net moniter showing NSPS ( no signal power save) ! then it mean Hager to COBBA then IP/QP signal is not given ! or COBBA can not do good demod that wave ! so first you have to see that IP/QP wave is ok or not ! then if not, go to check VRX from CCONT supply to Hager ! also you can try to measuer that TX power out going level and frq is ok or not ! if TX frq and level is ok, then it mean COBBA is ok, and PLL loop from ahger to VCO is OK! then continue, that you have to check that antenna switch , saw fileter to Hager ! if all is ok, then you go to check MAD to Hager via SDATA, SENA, SCLK ! you might need have oscilliscope to "see" !

03-01-2004, 19:04	#4 (permalink)
baraka42 No Life Poster Join Date: Aug 2002 Location: india Age: 63 Posts: 1,476 Member: 14578 Status: Offline Thanks Meter: 831	thank you very much Mr. willy, i hope that only you solve this problem for me. and i think now i can solve this phone by your $$$ help. @ZetMen, thanks for detail. thanks again you2. W.B.R.