3. TROUBLE SHOOTING
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Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. Check the left signal(HPH_L) and detection line(EAR_SENSE_JACK) are shorted when headset inserted.
See PCB Contact terminal also.
Check they are shorted
Left Signal(TP14)
Detect(TP15)
FB204
1800
ZD205
ZD201
ZD203
0
R
21
3
ZD202
100n
L202
33p
C213
C211
33p
33p
C210
CN306
6
1
4
4D
5
M5-MIC
M4-DETECT
M4-L
M1-R
M6-GND
VA205
FB200
1000
1000
FB201
GND
FM_ANT
HPH_RE
F
HPH_L
HPH_R
EJ_MIC
EARJACK_DETECT
REV_A(04/24)
1.0_6/26
1.0-1_0722
Ear Detect_TP13
Left_TP14