network problem solved in 24 hrs

[shoaib_mustajab]

n73 no network change antena switch and pa

[as_ji]

well chk this....
http://www.9916web.net/viewthread.ph...age%3D1&page=1

[shabooksa]

Originally Posted by as_ji

u need to categorize problems notchange all parts...

1st write latest mcu ,PPM; then write good Pm file.
If OK, otherwise go to 2nd step{Search networks manually ,if it shows all networks, then fault and cannot register then its fault of gsm,dcs,pcs amp...IF it does not search any network then ist you reflow PA and also make ant.sw jumper..
Now cheque the network. If it is O.K. Otherwise Filters, c&L&R..

Learn Here How To Service Network Problems
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there are two sections in network: 1, Rx section. 2, Tx section. all bros plz use manual searching in mobile phone, testing for Rx section and Tx section.
HOW TO FIND WHICH SECTION IS FAULT Tx (or) Rx?
Testing Rx section
use manual search for Testing Rx section, after searching Rx section good condition means it shows network list like Airtel, hutch, (or) any other network list in your area,
If Rx section bad condition after searching it shows NO NETWORK FOUND
1, after searching it shows network list means Rx section is ok.
2, after searching it shows NO NETWORK FOUND or some networks missing means Rx section is faulty.
Testing Tx section
Use manual search for testing Tx section, after searching it shows network list, then you can choose your simcard network, if Tx section is good condition it shows HOME NETWORK SELECTED, if Tx section is fault it shows NO ACCESS.
1, after selecting network it shows HOME NETWORK SELECTED means Tx section is ok.
2, after selected network it shows NO ACCESS means Tx section is fault.

Information of Rx section components and ics nokia dct-3 tech
1, antenna switch
2, RF IC ( Hagar ic )
3, AUDIO IC ( cobba ic)
4, crystal oscillator
5, filters
6, VCO (voltage control oscillator)

Information of Tx section components and ics nokia dct-3 tech
1, PF IC (PA IC)

Information of Rx section components and ics nokia dct-4 tech
1, antenna switch
2, filters
3, RF IC
4, crystal oscillator
5, VCO (voltage control oscillator)
6, UEM IC

Information of Tx section components and ics nokia dct-4 tech

1, PF IC (PA IC)

HOW TO SERVICE Rx SECTION FAULT ?
Solution for Rx section no network found fault nokia dct-3 technolagy
1,clean the pcb well and Rehot (if not ok follow one by one solutions)
1, give antenna switch jumper
2, Rehot the RF IC
3, Rehot the AUDIO IC
4, Reball the RF IC
5, change the RF IC
6, change the AUDIO IC
7, change the crystal oscillator

Solution for Rx section NO NETWORK FOUND fault nokia dct-4 technology
1, clean the pcb well and Rehot (if not ok follow one by one solutions)
2, give antenna switch jumper
3, Reheat the RF IC
4, change the crystal oscillator
5, Reball the RF IC
6, change the RF IC
7, Change filters

HOW TO SERVICE Tx SECTION FAULT ?

Solution for Tx section NO ACCESS fault nokia dct-3 technolagy
1, Change the PF IC

Solution for Tx section NO ACCESS fault nokia dct-4 technolagy

1, Change the PF IC

SOLUTION FOR OTHER NETWORK FUALT

Solution for low network coverage, all models

1, give jumper from antenna contact to cabinet antenna
2, change the antenna switch

Solution for dct-3 technology
When switch on the mobile it shows full network after few seconds its goas down

1, flash - Rebuild ime - UI settings (if not ok follow 2nd solution)
2, check the track from battery +ve point to PA IC, if track is ok then change the good PF IC.

Solution for dct-4 technology
When switch on the mobile it shows full network after few seconds its goas down

1, write good pm file (if not ok follow 2nd solution)
2, change the PF IC, if still the problem same check the PF power track to battery +ve point

BROTHER MIND****INGWORKI AM TOO LATE BUT THANX......

[tarun aggarwal]

i have 5200 when i search network it show instantly no network found suggest me what should i do?

[LUCKYFARHAN]

sir i have n73 signal not show only show 3G i alrady change p.a & pihi ic plz give me any soliution thanks in adv....

[eiasin]

sonierisson k750 no net work

[gopalhot]

i have 6680 network problem plz help me

[newvision123]

do not show imei no and other particulars with *#92702689# but show with *#06# accept sim show the network provider name in menu but do not pick signals.

plz help

[taimoorkhan]

i have nokia n73 no network
what will i have to do?

[nathaniel-1]

sir,
please help me with nokia 3250 for no network.i had jumper PA but same problem.Please help with pictures.thanks

[rampauljammu]

hiiii sir plz help me

[meo786pk]

dear check it ...............

Originally Posted by nathaniel-1

sir,
please help me with nokia 3250 for no network.i had jumper PA but same problem.Please help with pictures.thanks

[Sapandeep]

I have a 6630 phone damaged with water and problem is no network,I have given treatment to PF after a treatment my problem could not solve.please give me jumper settings and actual result for this.

[Sapandeep]

I need solution for 6630 water damage and no network.i have give treatment to PF.

[Rajlio]

I have Nokia N72 .when i started it signal droped ...plz help mi ....