LG KE590 Service Manual page 96

z Ear-Mic Headset Operation scheme is shown below.
HOOK_DETECT
HSO_L
HSO_R
VREXTL
R306
HSMICIP
JACK_TYPE
JACK_DETECT
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C303
120p
R303
R304
0
C305 C306
C307
120p 10u
82p
C309
82p
C312
120p VA301
EVLC14S02050
UART3_DSR
4. TROUBLE SHOOTING
VRIO VBAT VCHG
75
75
C308
47p
C310
47p
L301
100nH
R309
RPWON
VBUS_IN
- 97 -
CN301
47 21
19
FB303
FB304
FB305
10
FB301
11
12
LGE Internal Use Only
1
2
3
4
5
6
7
8
9