help, C100 Keypad problem - GSM-Forum

due · 08-07-2004, 18:31

the left keys aren't working: menu call 1 4 7 * left, and the (down menu at the left side) - a vertical line -
i checkd the voltage at the #pad it gives 2.7v
but the voltage at any of the (menu call 1 4 7 * left down ) gives me 0.49v
c100 service manual doesnt help there is no scheme for the pad keys and where it goes.
it says check U300, how the hell could I check it if its soldered sourface.
any idea guys!

CPUKILLER · 08-07-2004, 18:58

Remove Key Tone + And - Side Switches An Then Try

due · 08-09-2004, 17:55

are you kidding?
does anybody have a clear scheme where the keys lines are connected to?
and which ICs are belong to the keypad?
thanx in advance

gibso · 08-10-2004, 21:29

there must be a missing line somewhere someone pls help due with the scheme
gibso

eeprom_flash · 08-10-2004, 21:34

@ due I will send u line soon, i gat it!

gibso · 08-10-2004, 21:52

Quote:

Originally Posted by eeprom_flash

@ due I will send u line soon, i gat it!

can you also send me the lines when you get them
ogologibson@yahoo.com

lots of love

gibso

akshay · 08-11-2004, 18:13

@all

yes this is very curies prob.... but open keypad layer or heat proper to all keypad area
100% it works perfect but after one day its on same position. so whats this stupid prob.... cause same in e715 too.

b.r.
akki

due · 08-11-2004, 19:17

yeah service manual says check the U300 (CX80501) The Proccessor I Guess!
glued, i guess any work around it will kill the phone!
actualy a phone without menu and call bottons is already dead!
I catch the number that i wanna call but! i cant press call

ssatcom · 08-12-2004, 06:58

Quote:

Originally Posted by due

the left keys aren't working: menu call 1 4 7 * left, and the (down menu at the left side) - a vertical line -
i checkd the voltage at the #pad it gives 2.7v
but the voltage at any of the (menu call 1 4 7 * left down ) gives me 0.49v
c100 service manual doesnt help there is no scheme for the pad keys and where it goes.
it says check U300, how the hell could I check it if its soldered sourface.
any idea guys!

c100 keybad not work after water

due · 08-12-2004, 11:53

i cant test it :s
the phone is dead now

bestman · 08-15-2004, 04:03

you can solve this problem with cleaning your phone key- pad laying position and heating your phone CPU unit for function activation.

bestman.

SATISH · 08-15-2004, 10:34

Remove Small Capacitors @ Pf From The Bottom Of The Key Board Connected With The Keys. It Will Be Solved.

qwerthj · 08-17-2004, 02:34

GOOD SOLUTION!
I now repaired a c100 with remove the capacitors

The ultrasonic cleaner wasn't help.

WBR

i_seeque · 08-17-2004, 08:07

Quote:

Originally Posted by due

the left keys aren't working: menu call 1 4 7 * left, and the (down menu at the left side) - a vertical line -
i checkd the voltage at the #pad it gives 2.7v
but the voltage at any of the (menu call 1 4 7 * left down ) gives me 0.49v
c100 service manual doesnt help there is no scheme for the pad keys and where it goes.
it says check U300, how the hell could I check it if its soldered sourface.
any idea guys!

I ve removed this fault by simply changing flash file versions in a no. of c100 using ust56.
Though this capcitor removal technique is quite novel way to make alive the keys. Good solution BUDDY -keep it up!

Beyond Matrix · 08-17-2004, 17:33

Anyone have solution for E715 & E430?

After power on,all keys not functioning.

Remove vol. pads or camera pads still no help?

Thanks in advance.

08-07-2004, 18:31	#1 (permalink)
due Freak Poster Join Date: Feb 2004 Location: noWhere Age: 34 Posts: 240 Member: 52810 Status: Offline Thanks: 14 Thanked 13 Times in 11 Posts	help, C100 Keypad problem the left keys aren't working: menu call 1 4 7 * left, and the (down menu at the left side) - a vertical line - i checkd the voltage at the #pad it gives 2.7v but the voltage at any of the (menu call 1 4 7 * left down ) gives me 0.49v c100 service manual doesnt help there is no scheme for the pad keys and where it goes. it says check U300, how the hell could I check it if its soldered sourface. any idea guys!

08-15-2004, 10:34	#12 (permalink)
SATISH Freak Poster Join Date: Feb 2002 Location: MOBILE Posts: 329 Member: 9491 Status: Offline Thanks: 4 Thanked 14 Times in 12 Posts	key prob Remove Small Capacitors @ Pf From The Bottom Of The Key Board Connected With The Keys. It Will Be Solved.

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08-07-2004, 18:58	#2 (permalink)
CPUKILLER No Life Poster Join Date: Aug 2004 Age: 37 Posts: 952 Member: 76257 Status: Offline Thanks: 36 Thanked 55 Times in 38 Posts	Remove Key Tone + And - Side Switches An Then Try

08-09-2004, 17:55	#3 (permalink)
due Freak Poster Join Date: Feb 2004 Location: noWhere Age: 34 Posts: 240 Member: 52810 Status: Offline Thanks: 14 Thanked 13 Times in 11 Posts	are you kidding? does anybody have a clear scheme where the keys lines are connected to? and which ICs are belong to the keypad? thanx in advance

08-10-2004, 21:29	#4 (permalink)
gibso No Life Poster Join Date: Mar 2003 Location: Port Harcourt, River State, Nigeria Age: 34 Posts: 549 Member: 25150 Status: Offline Thanks: 0 Thanked 8 Times in 7 Posts	there must be a missing line somewhere someone pls help due with the scheme gibso

08-10-2004, 21:34	#5 (permalink)
eeprom_flash Freak Poster Join Date: Mar 2004 Location: Neptune Age: 11 Posts: 486 Member: 58599 Status: Offline Thanks: 0 Thanked 2 Times in 1 Post	@ due I will send u line soon, i gat it!

08-11-2004, 18:13	#7 (permalink)
akshay No Life Poster Join Date: Nov 2002 Location: Everywere Age: 35 Posts: 666 Member: 18057 Status: Offline Thanks: 21 Thanked 57 Times in 38 Posts	@all yes this is very curies prob.... but open keypad layer or heat proper to all keypad area 100% it works perfect but after one day its on same position. so whats this stupid prob.... cause same in e715 too. b.r. akki

08-11-2004, 19:17	#8 (permalink)
due Freak Poster Join Date: Feb 2004 Location: noWhere Age: 34 Posts: 240 Member: 52810 Status: Offline Thanks: 14 Thanked 13 Times in 11 Posts	yeah service manual says check the U300 (CX80501) The Proccessor I Guess! glued, i guess any work around it will kill the phone! actualy a phone without menu and call bottons is already dead! I catch the number that i wanna call but! i cant press call

08-12-2004, 11:53	#10 (permalink)
due Freak Poster Join Date: Feb 2004 Location: noWhere Age: 34 Posts: 240 Member: 52810 Status: Offline Thanks: 14 Thanked 13 Times in 11 Posts	i cant test it :s the phone is dead now

08-15-2004, 04:03	#11 (permalink)
bestman No Life Poster Join Date: Apr 2004 Age: 38 Posts: 1,271 Member: 61294 Status: Offline Thanks: 0 Thanked 49 Times in 42 Posts	you can solve this problem with cleaning your phone key- pad laying position and heating your phone CPU unit for function activation. bestman.

08-17-2004, 02:34	#13 (permalink)
qwerthj No Life Poster Join Date: Feb 2003 Location: Hungary Age: 31 Posts: 700 Member: 22902 Status: Offline Thanks: 50 Thanked 36 Times in 27 Posts	GOOD SOLUTION! I now repaired a c100 with remove the capacitors The ultrasonic cleaner wasn't help. WBR

08-17-2004, 17:33	#15 (permalink)
Beyond Matrix Freak Poster Join Date: Oct 2002 Age: 44 Posts: 326 Member: 16430 Status: Offline Thanks: 0 Thanked 2 Times in 2 Posts	Anyone have solution for E715 & E430? After power on,all keys not functioning. Remove vol. pads or camera pads still no help? Thanks in advance.