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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 11-04-2010, 16:16   #1 (permalink)
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1800 only 6, 9 buttons not working


1800 only 6.9 buttons not work
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Old 11-04-2010, 17:47   #2 (permalink)
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keypad ic problem change it .
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Old 12-12-2010, 03:03   #3 (permalink)
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Quote:
Originally Posted by RAVI_SINGH View Post
keypad ic problem change it .
please take a look 1800 schematic,no keypad ic in this set..
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Old 12-12-2010, 06:11   #4 (permalink)
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[IMG]http://3.bp.********.com/_haRAPmO1Seg/TGfXhVb5DBI/AAAAAAAAAZ8/uOre-mQGc-k/s320/nokia+1616+keypad+ways.jpg[/IMG]
You may start to check each particular keys which stop to responds or unable to function.
Each keys are connected to a particular group or set of rows and columns.
If all the keys in a particular row or column the problem may possibly lies on the application processor IC, The application processor is the one that controls and the keypad circuit.
If only one or two keys does not work, you may consider it that the problem lies on the key connection lines. If this happen you can mend it by applying a tiny jumper wire to the particular group of rows and columns of where that particular key is being connected. In keypads troubleshooting if one or two keys stop responding, you can consider it that the said keys is being cut to its particular groups of key column and rows.
Outer core connected keys
row a = Right, 7, Send, Left
row b = 9, Up, Down, Soft left
row c = 3, 6, Soft right, #
row d = 2, 5, 8, 0
row e = 1, 4, *

Inner core connected keys
column a = Right, 9, 3, 2, 1
column b = 7, Up, 6, 5, 4
column c = Send, Down, Soft right, 8
column d = Left, Soft Left, #, 0, *
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Old 12-12-2010, 06:13   #5 (permalink)
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[IMG]http://3.bp.********.com/_haRAPmO1Seg/TGfXhVb5DBI/AAAAAAAAAZ8/uOre-mQGc-k/s320/nokia+1616+keypad+ways.jpg[/IMG]
You may start to check each particular keys which stop to responds or unable to function.
Each keys are connected to a particular group or set of rows and columns.
If all the keys in a particular row or column the problem may possibly lies on the application processor IC, The application processor is the one that controls and the keypad circuit.
If only one or two keys does not work, you may consider it that the problem lies on the key connection lines. If this happen you can mend it by applying a tiny jumper wire to the particular group of rows and columns of where that particular key is being connected. In keypads troubleshooting if one or two keys stop responding, you can consider it that the said keys is being cut to its particular groups of key column and rows.
Outer core connected keys
row a = Right, 7, Send, Left
row b = 9, Up, Down, Soft left
row c = 3, 6, Soft right, #
row d = 2, 5, 8, 0
row e = 1, 4, *

Inner core connected keys
column a = Right, 9, 3, 2, 1
column b = 7, Up, 6, 5, 4
column c = Send, Down, Soft right, 8
column d = Left, Soft Left, #, 0, *
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Old 06-23-2011, 08:50   #6 (permalink)
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http://www.u2ugsm.com/blog/wp-conten...Pad-Ways-1.jpg
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Old 06-23-2011, 08:50   #7 (permalink)
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http://4.bp.********.com/-j78Ji92jOt...eypad+ways.jpg
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Old 08-12-2011, 15:29   #8 (permalink)
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spice 4580 charging conector point
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