LG KF700Q Service Manual page 80

CN401 CN401
L401 270nH
CN401
21
19
1
2 FB401
3
FB402 1800
4
5 FB403 1800
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
FL40
FB402, FB403
FL401 NUF2116MN
R411
1 8
IN1 OUT1
2 7
2200 NC1 NC4
3 6
NC2 NC3
4 5
IN2 OUT2
OUT2 IN2
5 4
NC3 NC2
6 3
NC4 NC1
7 2
OUT1 IN1
8 1
NUF2114MN FL402
[Fig. 4.4] Schematic of voice path
- 81 -
4. TROUBLE SHOOTING
2
R414, R415
R405
DNI
R412
0
C403 10u
R414 51
C405 10u
R415 51
VREG_MSMP_2.7V
C403, C405
HSET_BIAS
MICBIAS
EAR_MIC_P
HPH_L
HPH_R
FM_ANT
LGE Internal Use Only