LG MG230 Service Manual page 71

6. CIRCUIT DIAGRAM
1 2
A
SPEAKER-RECEIVER SELECTION
VBAT
C217 C218
2.2u 0.1u
R211
47K
C223
220p
U202 MAX9716ETA+T
1
_SHDN
6
VCC
8
OUT-
2
BIAS
C224 5
R214
OUT+
0.068u
10K 3
SPK_P IN+
7
GND
C228
R216 4
SPK_N IN-
0.068u
D 10K 9
PGND
EUSY0304901
C229
1u
R219
47K
C232
220p
E
1 2
LGIC(42)-A-5505-10:01
LGE Internal Use Only
3 4 5
HEADSET JACK
C200
0.1u
HEADSET_MIC_N
C201
2V8_VEXT
C207
39p
5
4
1 VCC
JACK_DETECT
OUT 3
GND
2
U201
NCS2200SQ2T2G
EUSY0250501
JACK_DETECT
L REMOVE
H INSERT
VBAT
10u C222
U203
C220 1u
NLAS5223BMNR2G
(N)
1 10
VCC NO2
AMP_SHDN
(P)
2 9
SPK_RCV_N
NO1 COM2
3 8
SPK_RCV_P
COM1 IN2
4 7
IN1 NC2 REC_N
R217
100K 5 6
REC_P
NC1 GND
EUSY0300101
SPK_SEL
R220
100K
Iss.
3 4 5
- 70 -
6 7 8
HOOK_DETECT
2V5_JACK
H NORMAL
L KEY_PUSH
R200
1K
R202
R203 R204
20K
1K 0
HOOK_DETECT
NA
C204
C202
39p
33u
ECTH0005201
2V8_VEXT
R205
C206 39p
1M C208 10u R206
AUXOP_FML
C209 0.1u (1608) 4.7
HEADSET_MIC_P
VIN-
VIN+ C210 10u R207
AUXON_FMR
R209 C212 (1608) 4.7
39p C211 15p
1M
R208
330K
EVLC18S02003 EVLC18S02003 EVLC18S02003
BOT PLACE(NA)
2V5_VMIC
R210
1K
R212 C221
2.2K
120p
R213
100ohm
VINNORP
C225
39p
R215
100ohm
VINNORN
C227
0.1u
R218
2.2K
C230 C231
39p 39p
CLOSE TO MIC
Section Date
11/20
Designer
2006
Checked
Approved
Notice No. Date Name LG Electronics Inc.
9 10
A
2V8_VEXT 2V5_JACK
U200 BH25FB1WHFV
R201 4.7K
1 5
STBY NC
2 6
GND BGND
3 4
VIN VOUT
EUSY0223007
C205 C203
1u 1u
ELCH0010401
J200
L200 2.2uH
L201 2.2uH
L202 2.2uH
B
FM_ANT
ENJE0003102
KJA-PH-3-0059
L203
270nH
ELCH0001556
1608
CLOSE TO HEADSET JACK
(NA) (270nH)
C
C219
10u
MIC200
C226 1
2
39p
OB4-15L42-C33L
SUMY0003802
D
VA203 VA204
ICVS0505481FR ICVS0505481FR
SEVY0007901 SEVY0007901
Sign & Name Sheet/
MG230/MG235 MG230d
Sheets
MODEL
HTEL
(SPFY0145101)
2/7
DRAWING
AUDIO
NAME
DRAWING
REV.1.1
NO.
LG Electronics Inc.
LGMC
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Only for training and service purposes