Touch Trouble - LG GM360i Service Manual

4. TROUBLE SHOOTING

4.11 Touch trouble

Check Points
- Touch driver IC soldering`
- Touch connector Crack
Touch Connector
VBAT
TOUCH_2V7
U4
1 4
VOUT VDD
2 3
GND CE
CN401
X+
1
2
X-
3
4
LG Electronics
LGE Internal Use Only
TOUCH_2V7
TOUCH_LDO_EN
C12
1u
Y+
TOUCH_INT
Y-
88/147
Touch IC
VFM_2V9
FB1
220
C417
C416
1uF 0.1u
U401
A1
AUX
A2
VDD_REF
A3
X+
TP408
B1
PENIRQ-
B2
A0
B3
Y+
X+
Y+
X-
Y-
VA411 VA410 VA406
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Copyright © 2010 LG Electronics. Inc. All right reserved.
C1 I2C_SDA
SDA
C2
A1
C3
X-
D1
I2C_SCL
SCL
D2
GND
D3
Y-
VA409
LGE Property
Only for training and service purposes