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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > Nokia > Nokia Hardware & Hardware Repair

Nokia Hardware & Hardware Repair all what you need for Hardware Repairing for Nokia Phones. Before writing any thread here try to check the Frequently Asked Questions Section.

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Old 02-03-2004, 13:01   #1 (permalink)
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Nokia 7250/6610/7210 Keybort foulty


Hello ,
dose somone know about this foulty, see title, in my case one line of
buttons is not working, like 1.4.7.*. or 2.5.8.0.
Any suggestion will be appreshiated.
Thenks.
Gennady
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Old 02-03-2004, 21:55   #2 (permalink)
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Well ..

That means that there is a brocken linke across the pathway of the mensioned columns ( 1,4,7,and *)/ ( 2,5,8,and 0 ) from the swithes pads on the keyboard's PCB through the connector X301 , and the Combo-Resistor Z300 to the UEM.
Of corse U need a schematic , downloade one then follow the pathways.
Check to resolder with the tip of fine solder iron the connector of the required column ,try to reflow Z300 and tell the results
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Old 02-03-2004, 23:58   #3 (permalink)
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most likely the filter has gone, change i think Z300
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Old 02-10-2004, 20:10   #4 (permalink)
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Someone can post link for good Schematic/Service Manual, what i have hier is Level 1-2, no components discription, unfotunatly.
Thenks in advance,
Gennady
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