LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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4.7.4 Microphone for main MIC
Main Microphone path as below:
MIC
→
C4021,C4024
→
C4017
start
MICBIAS(C401 7) is 1.8V?
Some signal appear at
C402 1, C402 4?
Change the Main board
Change Mic
YES
NO
NO
Make a call
YES
Change the
Main board
YES
MIC
0.1u
C4021
SP0204LE5-PB
MI4000
G1
2
3
G2
5
G3
1
OUT
PWR
4
C4017
10u
47p
C4023
DNI
R4025
C4024 0.1u
MICBIAS
MIC1P
MIC1N
Z3X-BOX.COM
Содержание KF310
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