LG KG290 Service Manual page 101

7. CIRCUIT DIAGRAM
1 2
A
C200 NA
R201 39K
U201 TPA6205A1DRBR
R202 0 1 6
AMP_SHDN _SHUTDOWN VDD
2 8
C207 BYPASS VO-
0.47u
R209 10K
3 5
ABB_P IN+ VO+
4 7
ABB_N IN- GND
9
C208
R211 10K PGND
B
0.47u
C209
R213
100K 220n
C211 NA
R215 39K
AUXOP_L_OUT
C
AUXOP_L
HEADSET_PATH_SEL
20 R217
JACK_DETECT
2V8_VMEM
C212 C213
100p 100p
R225
3K
R228 0.1u R229 1.5K
AUXIP
C220 0.1u
AUXIN
C224 C225 C226
27p 27p 10u
D
2V85_VSIM
SIM CONNECTOR
R235
J202
15K
4
C5
5
C6
R236 0
6
SIM_DATA C7
10
GND4 GND1
9
GND3 GND2
E
C237
NA
1 2
LGIC(42)-A-5505-10:01
LGE Internal Use Only
3 4 5
ACOUSTIC & MIDI
VBAT VBAT
C201 C202
C203 C204 0.1u 39p
2.2u 0.1u
U202
NLAS5223BMNR2G
1 10
VCC NO2
2 9
SPK_N NO1 COM2
R208 0
3 8
SPK_P SPK_RCV_N COM1 IN2
4 7
SPK_N SPK_SEL IN1 NC2
R210 0
5 6
REC_N NC1 GND
R214
200K
SPK_SEL
L RECEIVER
H SPEAKER
2V8_VMEM
2V8_VMEM
U210
NLAS5223BMNR2G
1 10
VCC NO2 AUXOP_R_OUT
2 9
R216
NO1 COM2 AUXOP_R
10u C221 1M
C218 10u U203
3 8
HEADSET_PATH_SEL
COM1 IN2
VIN- 4 5 NCS2200SQ2T2G
VCC
4 7 1
IN1 NC2
VIN+ 3 OUT
GND
2
5 6
NC1 GND
R270
100K R220
220K
R224
NA
R226 33 L200
AUXOP_L_OUT
L201 1800
L202 1800
R230 33 L203 1800
AUXOP_R_OUT
FM_ANT
C232
C231
39p 27p
C229 VA202 C230 R233
27p 1M
18p NA
JACK_DETECT
H INSERT
L REMOVE
2V85_VSIM
1
C1
2
C2 SIM_RST
3
C3 SIM_CLK
7
8
C236 C238 C239
220n NA 1000p
3 4 5
6 7
u-SD CARD
SPK_P
R203 R205
SPK_RCV_P
R206
10K 10K
10K
SPK_SEL
J200
1 8
REC_P TF_DATA2 DAT2 DAT1
2 7
TF_DATA3 DAT3 DAT0
3 6
TF_CMD CMD VSS
4 5
VDD CLK
9 11
GND1 GND3
10 12
GND2 GND4
R212
470K
MIC
HOOK_DET
C214
1u
L
H
J201
1800
MIC_P
C227 VA201
18p
VA200 NA
L204
NA
C233
4.7uH
NA MIC_N
CLOSE TO EARJACK
- 102 -
8 9 10
2V85_TF
VBAT 2V85_TF
U200
R207
BH28FB1WHFV
10K
1 5
TFLASH_EN STBY NC
2 6
GND BGND
3 4
TF_DATA1 VIN VOUT
TF_DATA0
(2.8V 150mA)
C205
TF_CLK 1u
C210
NA
2V8_VMEM
U204
NLAS5223BMNR2G
1 10
VCC NO2
2V5_VMIC
2 9
MULTI_MIC_P NO1 COM2
3 8
R221 MIC_P COM1 IN2
MIC_PATH_SEL
4 7
1K MIC_PATH_SEL IN1 NC2
AD6721
5 6
AIT813G VINNORP NC1 GND
C216
R227
C219 C215 1u
10u
39p
2.2K
R231 100ohm
C222
C223
39p 39p
C228 0.1u
R232 100ohm
R234
2.2K
LGMC
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
A
A
C206
4.7u B
B
C
MULTI_MIC_N
MIC_N
MIC_PATH_SEL
VINNORN
C217
100K
OB4-15L42-C33L
2
1
MIC200
D
LG Electronics Inc.