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Old 11-25-2009, 16:55   #174 (permalink)
dipendra_22
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Thumbs up n70 shorting check

check shorting in nokia n-70...


1..remove this z7500 mark in (1) if u want to check the shoting of pf of gsm and wcdma ....if remove the coil and ur shoting is gone then tere is shoting in ur pf of gsm or wcdma ........

2..remove this coil mark in l7503 (2)...if u want to check the shoting of rf ic for gsm hinku and rf ic for wcdma vinku.... by removing this coil if ur shoting is gone then there is shoting in ur rf ic whether it is hinku or vinku....

3..remove this coil mark in (3)..if u want to check the shoring cause flash light driver ic n1471 ....because this ic got +b from batery....

4..remove this coil mark in (4)..if u want to check smps ic n4200.. ..this ic make v corea for omap ic and rap remove cil to check shoting is gone or not.....

5..remove this ic n4201 ape regulator mark in (5)..if u want to check the shoting is cause by this remove it to check shoting is gone or not....

6..remove light ic mark in (6) ... to check the shoting cause by light ic or not....

7..remove n1472 ic mark in (7) ...it is vcamdig maker ic which make v.cam when front camera is activated ......remove this to check shoting because this ic got +b from batery......

8..remove ic n1470 and n7505 ic mark in (8,9)... it is c camdig maker ic which make v.cam or front camera ....remove these ic to check shoting .....because it got +b from batery.....

9..remove bluetooth module mark in (10)... tocheck shoting ...because it got +b from batery.....

10..at end remove retu and tahvo ic to check shoting.......

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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