LG KG800 - Navigation KEY Problem

4. TROUBLESHOOTING
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4.15 Navigation KEY Problem
U1000
R1003
R1002
R1001
TEST POINT
P1002
C1002
2.2u
P1001
3V3_VTOUCH
6
VDD
28
VSS1
32
VSS2
12
XREX
17
10 15
P1_4
9
P1_5 P1_6
16
P1_7
8
20
P2_0
5
P2_1
21
P2_2P2_3
4
22
P2_4
3
P2_5
P2_6
23
P2_7
2
18
P3_0
7
P3_1
P3_2
19
P3_3
CY8C21434
U1000
GND
33
24
P0_0
1
P0_1
25
P0_2
31
P0_3
26
P0_4 P0_5
30 27
P0_6
29
P0_7
13
P1_0
11
P1_1 P1_2
14
P1_3
P1003
P1000
SENSE0
SENSE6
SENSE2
SENSE7
TOUCH_DAT
TOUCH_INT
TOUCH_CLK
SENSE8
SENSE4
SENSE1 SENSE5 SENSE3
AXK8L10125G
R1002
1K
G2
3V3_VTOUCH
110
2
3
4
56
7
8
9
G1
CN1000
1KR1001
VBAT
1KR1003
TOUCH_CLK TOUCH_DAT
TOUCH_INT
CIRCUIT DIAGRAM