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Old 08-10-2012, 18:49   #45
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answer: Solution of identify nokia phone shorting

check shorting in nokia 1616 rh125 x gold chip-set..........


1..remove the pf n7100 mark in (1)...if u want to check is pf is short remove it and check shoting...if it is shot then replace it...

2..remove coil l2503 mark in (2)...light driver transistor v2500 got +b through this coil ...if this transistor is short then remove this coil to check shorting cause by this transistor....

3..at end remove d1000 xgold ic to check shoting is gone or not ....

some usefull info about nokia 1616 rh125 & xgold d1000.......

this is new handset launched by nokia with xgold chip-set ...

d1000 is the main ic in the handset which control all the things in the handset like charging,sim,ringer,speaker,light,keypad,dispaly.. .etc...

this ic got +b from battery and generates volt for display (vaux) and sim (vsim)...it also control the display and work as cpu...

in simple words this ic is the combine form of power ic ,audio ic,charging ic,ui ic,and cpu..

there are some useful repair tricks about this handset which are on pic attached below...



all the component which are mark in pink colur these all are coils these are place in series and +b of batery is gone throw them so if u remove the coil u not have to remove ic to check the shorting in pcb it save time and ur ic ....



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