fault finding easy way
nokia 7210 sim ic checking----
In this method we select multimeter in buzzer range after that red pin of meter put on gnd(-ve) and black on sim tray pin if following value (near about)come then ic is ok if one pin or all pin dont have the value
that means ic is faulted
that means ic is faulted
buzzer ic & line checking
red pin gnd & black on buzzer tip
following value should come(about)
if value dont come then any coil open
or ic is faulted
if earpiece no voice then likewise value checking
charging cheking--
if any value dont come
then fuse or coil is open
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