LG D405 Service Manual page 85

EAR_SENSE_JACK
HPH_L
HPH_R
C6610 1n
FM_ANT
EAR_MIC_JACK
Place these components close
to the headset jack connector.
Rev1.0)
RevB: TDMA issue
R6923 0
HPH_REF
TP4(L6610)
R6105
EAR_SENSE_JACK
TP4(L6610)
<Main Top>
LGE Internal Use Only
(06/18)
1800
FB6611
1800
FB6612
TP3(FB6612)
Rev1.0
C6611
10n
R6425
3M
20K
0.01
Pin 18(GND) should have
a dedicated via to main GND.
TP1(R6105)
TP1(R6105)
TP2(FB6611)
(06/03)
RevB) DGMS
0603,3.3V,7.5V,6pF
C6103 1u
0.1 10V
C6106 0.1u
<Main Bot>
- 85 - Copyright © 2014 LG Electronics. Inc. All right reserved.
3. TROUBLE SHOOTING
J6610
S/W_Detect
SPK_L
SPK_R
GND
1800
FB6610 MIC
JNTC
(06/18)
EAG63550001
DGMS checklist
To improve FM Antenna performance using 3pole Ear-jack
Place these components close
to the headset jack connector.
D6610
37
MBHC_HSDET
U6100
22
CCOMP
WCD9302
34
LDO_HI_CAP
TP3(FB6612)
TP2(FB6611)
Only for training and service purposes