LG GT810h Service Manual page 123

4. TROUBLE SHOOTING
VREG_MSMP_2.6V
C690 2.2u
HS_MIC_BIAS_EN
HS_MIC
EAR_SENSE
R416
HSL
R417
HSR
FM_ANT
LGE Internal Use Only
[MSM7201A]
HS_Mic_Bias LDO
FB602
U602 R1114D181D
1 3
VDD VOUT
4 2
NC GND1
6 5
CE GND2
TTY_ADC
30
30
TDMA
C212
C1
WIPER
D1
YM_LR
E1
YP_UR
D2
VREG_MSMP_2.6V
7620-3_5G-DB1-A
FB402
AGND
CONNECT TO U503.E3
Copyright © 2009 LG Electronics. Inc. All right reserved.
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TOUCH_Y1YD
TOUCH_Y2YU
J401
FM_ANT
EAR_SENSE S/W
LOW Close
HIGH (detect) Open
Only for training and service purposes