LG KE820 Service Manual page 119

7. CIRCUIT DIAGRAM
1 2 3
PMIC & Li-ion CHARGER
A
VCHG
R202 R203
RTC_OUT PWRON VBACKUP
220K 22K
R208
470K
SPOWER_INT
VCH_CTL
_PMRST
VBAT
B
1V8_MEM 3V1_USB 1V5_RF VBAT
FB201
1
VCHS VCHS
2
VBATS
3
VRFC
4
PWRON ON
5 U203
VDDPW
L201
6
SW
10uH
7
PMB6812
VSSPW
8
VSSFB
9
FB
10
USB_PU VUPU
11
VUSB
12
VBUS_USB VBUS
C219 C220 C221 C222 C223
22u 22u 2.2u 2.2u 2.2u
C
2V72_IO 2V85_CARD 2V85_IO2 2V85_SIM VBAT
C226 C227 C228 C229 C230
D
2.2u 2.2u 2.2u 2.2u 1u
E
AUDIO AMP SUB SYSTEM & SIGNAL DISTRIBUTOR
3V3_AUDIO
F
U208 NLAS5223BMNR2G
1 10
VCC NO2 SPK_P
2 9
SPK_N NO1 COM2 SPK_RCV_P
3 8
SPK_RCV_N COM1 IN2
4 7
SPK_RCV_SEL IN1 NC2 RCV_P
5 6
RCV_N
NC1 GND
C242 C240 C244 C243 C241
100p 100p 0.1u 100p 100p
G
AMP_IN_R
3V3_AUDIO
AMP_IN_L
U211 NLAS5223BMNR2G
1 10
FM_SND_L
VCC NO2
2 9
FM_SND_R NO1 COM2 AMP_IN_L
3 8
AMP_IN_R
COM1 IN2
4 7
FM_BBP_SEL IN1 NC2 BBP_SND_L
5 6
BBP_SND_R
NC1 GND
C251
H 0.1u
1 2 3
4 5 6
LCD BACKLIGHT & CAMERA FLASH LED DRIVER
2V11_RTC 1V5_CORE 1V5_DSP 2V85_RF VBAT 2V7_VCXO 2V65_BT
C207 C208 C209 C210 C211 C212 C213
2.2u 2.2u 2.2u 2.2u 2.2u 2.2u 2.2u
FLASH_EN
2V65_ANA VBAT
LCD_BACKLIGHT
36
VCXOEN VCXO_EN
35
VDDA
34
VANA
33
VSSR
32 R213 82K C217 C218
IREF
31 C216 0.1u
BYP
30 2.2u 2.2u
VDDAU
29
AUOP
28
AUON
27
VSSAU
26
AUIP
25 VCHG
AUIN
Q201
SI3457BDV
S C224 R217
G
VCH_CTL
4.7u
100K
AUDIO POWER EXTERNAL LDO
D1 D2 D3 D4
D201
CRS08
VCHS
R220 VBAT
0.15
C235 R218
AF_PWR_EN
33u R447
AU_PWR_EN
2V72_IO 3V3_AUDIO
C238
C236 C237
0.1u 1u
4.7u
B4 D1
PHONE_IN MONO+ SPK_P
C239 220n R436 0 D4 B1
RIN MONO- SPK_N
C245 220n R437 0 E4 D5
LIN U210 ROUT HS_OUT_R
LM4845
B5
NC1
A2 D2
I2CSPIVDD NC2
A1 E5
SDA SDA LOUT HS_OUT_L
B2
SCL SCL
R229 100K B3
ID_ENB
E1 E2
I2CSPI_SEL CBYPASS
C247
C248 C447
0.1u
470n 220n
4 5 6
7 8
C201 C202 C203
VBAT
1u 1u 1u R201 120
U202 R205 120
R206 120
4 3 R209 120
VIN VOUT_FL FLASH_LEDA
C206
13
VOUT_BL MLED_A
1u 9
GND
17
PGND
5
ISINK1 MLED_C1
R434 0 16 6
EN_FLSH ISINK2 MLED_C2
7
ISINK3 MLED_C3
10 8
EN_SET ISINK4 MLED_C4
AAT2805IXN-4.5-T1
C214 C215
R211 R212
100K 100K 2.2u 1u
EXTERNAL RESET
2V72_IO VBAT 2V8_AF 3V3_AUDIO 2V72_IO 2V11_RTC
U205 ISL9014IRJNZ R216
R214 11
PGND
100K
1
VIN
1K
10
VO1
0 2
EN1
9
U206 NC7WZ08L8X
VO2
NA 3
EN2
8
NC3 _EXTRST
4 TP206
CBYP SPOWER_INT
7 TP207
NC2 _RESET
5
NC1
6
GND
C231 C448 C451 C232
1u 1000p 1u 1u
MULTI-PORT SWITCH 1
2V72_IO
R224
10K
Pin6
TXD_0
Pin7
RXD_0
1
NC1
R451
2
JACK_DETECT IN1_2
3
0
NO2
4
COM2 Pin7
Pin6
REMOTE_INT
Pin7
REMOTE_ADC
C456
100p
R234 1.5K
USB_PU
R235 12
Pin6
USB_DP
R238 12 Pin7
USB_DM
mentor
7 8
- 120 -
9 10 11
BATTERY CURRENT MONITOR
VSUPPLY VBAT
R204 U201
5 1
LOAD NC
CN201 47mohm 2
GND
1 4 3
VIN IOUT I_MONITOR
G1
R207 ZXCT1010E5TA C204 R210
2
BATT_TEMP
G2
1K
2.2K
3 1u
C205
27p
REMOTE POWER ON
VBAT
R215 0
U204 NLAST4599DFT2G
6 NO
COM 5
PWRON
4 NC
END_KEY
TP208
PM_INT
TP205 C233
_PMRST
1u
C234
RPWRON
0.1u C438 R219
1000p 100K
VSUPPLY
U403 R1114D281D-TR-F
R454
1 3
VDD VOUT RPWRON
1K
4 2
NC GND1
6 5
RPWRON_EN CE GND2
R453
C461 C460
100p 100K 1000p
VBAT VBAT
R228
10K
U209
DG2018DN
12
Pin7 COM4 MULTI_PORT_1
11
NO4
10
IN3_4
9
NC3
C
Q202
R231
B
MULTI_PORT_0 VBUS_USB
10K
C246 R233
C458 C459 E
RN1307
NA NA
0.1u 10K
Engineer:
LG Electronics
Drawn by:
T.K.CHOI
R&D CHK: W.J.KIM TITLE:
KE820
DOC CTRL CHK:
Issue 1.0
MFG ENGR CHK:
Changed by: Date Changed: Time Changed: QA CHK: REV: Drawing Number:
2005-06-01 3:07:35 pm
9 10 11
12
A
B
C
D
E
F
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Size:
A3
12 1 8 A
Page:
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