Keyboard - Nokia N900 Service Schematics

ROW(7:0)
GAIA
0
1
2
3
4
5
6
7
EMI/ESD protector
COL(7:0)
Z4302
GAIA
0 D5 D2
Output1 Input1
1 E5 E2
Output2 Input2
2 C4 C1
Output3 Input3
A5 A2
3
Output4 Input4
4 B4 B1
Output5 Input5
B5 B2
5 Output6 Input6
6 D4 D1
Output7 Input7
C5 Input8 C2
7 Output8
E1
E4 Output9 Input9
A4 Input10 A1
Output10
SCREEN_LCK
CPU > A3 C3
GND GND
E3 D3
GND GND
OMAP3430
GND GND
Customer Care / GTM / Competence Management
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QROW(7:0)
7
0
VOL+
1
2
S4311 1 S4312
3
4
5
6
2
7
GND GND
1
2
QCOL(7:0)
0
1
2
3
4
5
6
7
Lock switch
1 2
S4313
GND
S4533
4 2
1
CTRL
4
S4534
6
5 2
1
Fn
0
1
2
5
S4535
6 2
1
SHIFT
2
3
4
VOL-
1
Volume keys
2
0
S4504
S4501 S4502 S4503
2 2 2 2
Q W E R
1 1 1 1
0 1 2 3
7 1 2 3
S4512 S4513 S4514 S4515
2 2 2 2
A S D F
1 1 1 1
6 7 1 2
S4523 S4524 S4525 S4526
2 2 2 2
Z X C V
1 1 1 1
Version: 2.0 | 07.10.2009 | N900/RX-51 | Board version: 2JH_21a | Keyboard | Page 7 (18)
SLIDE_SW
CPU >
OMAP3430
R4300
POWERON
560R
GAIA
CAM_CAP(1:0)
CPU >
OMAP3430
QWERTY keyboard
1
S4505 S4506 S4507 S4508
2 2 2 2 2
T Y U I
1 1 1 1
4 5 6 7
4 5 6 7
S4516 S4517 S4518 S4519
2 2 2 2 2
G H J K
1 1 1 1
3 4 5 5
S4527 S4528 S4529 S4530
2 2 2 2 2
B N M
1 1 1 1
SPACE
2.8V
V28
N4501
3 2
Out2 Vcc
4 1
Out1 Gnd
C4501
100n
Slide open
sensor GND GND
EMI/ESD
protector
Z4300
E1 I1
S4301 1
E2 GND
Power key
GND GND 2
GND GND
0
1
Capture key
S4314 4,5= GND
1 2 3
GND
3 4
2
S4509 S4510 S4511 S4537
2 2 2
O P ,
1 1 1 1
0 0 0 0
1 2 3
S4520 S4521 S4522 S4538
2 2 2
L . 1 1
1 1
7 1 2
S4531 S4532 S4536 S4539
2 2 2
1 1 1 1
SPACE