LG HB620 Service Manual page 93

4. TROUBLE SHOOTING
CN701
21
19
1
2
3
4 C841 33u
LGE Internal Use Only
MICBIAS
FB503
R703 68
- 94 -
VREG_MSMP_2.7V
PCB Rev. Check
R202
R203
1% 1%
680K 150K
EAR_MIC_P
TV_OUT
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Only for training and service purposes
C201
10p