LG LG-D855 - Page 167

3. TROUBLE SHOOTING
- 167 -
Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. Check the left signal(HPH_L)(FB6611 TP17) and detection line(EAR_SENSE_JACK)(D11004 TP18) are shorted
when headset inserted. See PCB Contact terminal also.
Ear Detect_TP17
Left_TP18
0
R6615
C6706
10n
L6003
0
1000FB6611
1000FB6612
L6001 100n
J6610
S/W_Detect
SPK_L
SPK_R
MIC
GND
C6704
1n
C6705
1n
D11004
L6002
2.2n
C6703
33p
D11005
D11006
D11007
33pC6616 33pC6618 33pC6615
FB6610 1000
VA11004
C6702
DNI
EAR_MIC_JACK
HPH_L
HPH_R
EAR_SENSE_JACK
FM_ANT
HPH_REF
rev.B
Place Close to the EJ Conn.
MC-C00075-13 : For ESD protection / tuning point
(DGMS Guide)
GND Close to EarJack
12/20
FOR EU_CE_EMC_CS
REV10
Left_TP18
Ear Detect_TP17