LG -T300 Service Manual page 126

7. CIRCUIT DIAGRAM
16 15 14
L 3.5phi HEADSET
1V8_VDD
K
JACK_DETECT
L301
HP_ROUT
0.1uH
L302
HP_LOUT
0.1uH
J
C301 C327
270pF
270pF
0
EAR_GND
R326
1V8_VDD
I
R334
100K
R305
HOOK_DETECT
47ohms
C326
120pF
H
HS_MIC_N
HS_MIC_P
G
F
E
X+ 1
2
X-
3
4
CN301
D
C340 C341 C342 C343
X+
Y+
X-
Y-
C
B
A
16 15 14
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
13 12 11 10
1V8_VDD
R336
1M
S
G
Q201
L304 ZD302
C325
D EDTY0009401
0.1uH 24p
R337
100K
R338
10
FB304
EAR_GND
DNI
M6
2
FB302 1800 M1
3
FB301
1800 4 M4F
FB305 1800 5 M3
6 M4
M5
1 J301
R304
DNI DNI
VA304 VA303 VA302 VA305
VAUX
OUT IN-
4 3 R307
GND 100
2
C344
VCC IN+
5 1 DNI
U303
VHSMIC
C304
560pF
R301
C312 0.022uF
2.2Kohms
C306
10pF
C302 0.022uF
C305 C303
2.2uF
560pF
Touch & Haptic Driver Ckts
VBAT 1V8_VDD 1V8_VDD
Y+
Y-
R311
DNI
C313
C315
2.2u
2.2u
R312
U301 1V8_VDD
4.7K
4 9
VDD VDDP
7
I2C_SDA
SDA
18 8
I2C_SCL
XP SCL
1 6
YP SADD
2 17
TOUCH_EN
XN LEN
3 5 TP306
YN INTB TOUCH_INT
10 TP307
PWM/CLK VIB_PWM
16 VB301
HEN VIB_EN
19 14 1 R335
PGND VDP
12 100K
VDN
C314 13 2
GAIN C339
1u
R310 DNI
0.1u
C310 10n
R332 R333
100K 100K
13 12 11 10
9 8 7 6
FM_ANT_1
CAMERA INTERFACE for 1.3M
22
CAM_DATA0
D0 PCLK
23
CAM_DATA1 D1 VSYNC
24
CAM_DATA2 D2 HSYNC
CN302
1
CAM_DATA3 D3 STANDBY
2
CAM_DATA4 D4 SCK
3
CAM_DATA5 D5 SDA
4
CAM_DATA6 D6 RESETB
5
CAM_DATA7
D7 MCLK
B TO B INTERFACE 1V8_VDD VMMC
LED_PWM TP305
37
LCD_IF
15pF 36
35
34
LCD_VSYNC INOUT_A4 INOUT_B4 33
4 6 TP304
LCD_nWR INOUT_A3 INOUT_B3 32
3 7
LCD_CD TP303
INOUT_A2 INOUT_B2 31
2 8
LCD_nCS TP302
INOUT_A1 INOUT_B1 30
1 9
29
FL303
28
27
26
15pF
25
24
23
LCD_DATA07 INOUT_A4 INOUT_B4
22
4 6
LCD_DATA06 INOUT_A3 INOUT_B3
21
3 7
LCD_DATA05 INOUT_A2 INOUT_B2
20
2 8
LCD_DATA04
INOUT_A1 INOUT_B1 19
1 9
FL302 18
17
16
15
LCD_IF 14
15pF
13
12
LCD_DATA03 INOUT_A4 INOUT_B4 11
4 6
LCD_DATA02 INOUT_A3 INOUT_B3 10
3 7
LCD_DATA01 9
INOUT_A2 INOUT_B2
2 8 MLED5
LCD_DATA00 TP301 8
INOUT_A1 INOUT_B1
1 9 MLED4
VBAT 7
FL301 MLED3
6
MLED2
5
MLED1
4
3
LCD_ID
2
1
R323
LCD_nRESET
CN303
100
C308 C307
1u
VA306
C309
C338 1u
2.2u
0.1u
ZD301
9 8 7 6
- 127 -
5 4 3 2
C329 C336
DNI 15p
20 R321 22
CAM_PCLK
19
CAM_VSYNC
18
CAM_HSYNC
12
CAM_STANDBY
11
I2C_SCL
10
I2C_SDA
9
CAM_RESET
7
R322 51 CAM_MCLK
R320 C335 C328
100K 15p DNI CAM_A_2V8
CAM_IO_1V8 CAM_D_1V5
C337 C334
C331 C333 C330 C332
0.1u 56p
0.1u 56p 0.1u 56p
CHARGE PUMP
CAM_IO_1V8
C323 1u
CAM_D_1V5
C324
1u
CAM_A_2V8
FM_LNA_EN
VBAT
6 24
AGND VOUT
7 23
MLED1
VIN LED1
8 U302 22
MLED2
LDOIN LED2
9 21
MLED3
LDO4 LED3
10 20
MLED4
LDO3 LED4
11 19
LDO2 LED5 MLED5
12 18
LDO1 LED6
C317
1u
C318 C321 C322
C320 C319
1u 2.2u 2.2u
2.2u 2.2u
I2C_SCL
I2C_SDA
LCD_BL_CTRL
LED_PWM
C316
R313
0.1u
100K
5 4 3 2
1
L
K
J
I
H
G
F
E
D
C
B
A
1
LGE Internal Use Only