LG GU280 Service Manual page 112

7. CIRCUIT DIAGRAM
16 15
L
K
J
KEY BACKLIGHT LED(2EA)
I
KYBD_BACKLIGHT
H
G
F
E
Audio Sub System
D
C532
C531
C519 HPH_R
C530
DNI HPH_L
C509 18n
LINE_N
LINE_P
C505 18n
C520
DNI
C
I2C2_SDA
I2C2_SCL
B
A
16 15
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
14 13 12 11 10
HALL IC
LD502
R502
+VPWR
27
99-216UFC_2229017_TR8
LD501
VREG_MSMP_2.6V
R505
+VPWR
27
99-216UFC_2229017_TR8 SLIDE_DETECT
C503 C507
100n 10p
VA503
EVLC14S02050
+VPWR
C534
C536 C504
1uF
1uF 0.1uF
C533 1uF
MIC
A4
C1N
1uF A5 A1
C1P HPR HPH_OUT_R
A2
HPL HPH_OUT_L
1uF D1
MIC1P
INA2
1uF D2
INA1
IC500
600 CN501
C1 MAX9877AEWP_TG45
INB2 HH-1M1005-601JT
FB502 1
C2 D5 MICBIAS
INB1 OUT+
B2 B5 FB501 2
BIAS OUT-
C510
HH-1M1005-601JT 10u
B3 C513 C514 600
SDA
16-8T-04WP
C3
SCL
120pF 120pF VA510 VA511
D4
RXIN+
B4
RXIN-
EVLC18S02015 EVLC18S02015
C527
1uF
14 13 12 11 10
9 8 7 6
KEY MAP
VREG_MSME_1.8V
R507
KEY_ROW[4]
27
R508
KEY_ROW[0]
27
R509
U503
BU52031NVX KEY_ROW[1]
27
4 1
VDD OUT
3 2
NC GND
R510
KEY_ROW[2]
27
R511
KEY_ROW[3]
27
R512
27
KEY_COL[0] R513
27
KEY_COL[1] R514
27
KEY_COL[2]
VA501
EVLC14S02050
FM CIRCUIT
MIC501
1
OUT
2
G1
3
G2
4
G3 FM_ANT
5
PWR
6
G4
C508 C512 C506 SPM0410LR5H-QB
47p 33p 12p
9 8 7 6
- 113 -
5 4 3 2 1
HOT1
KB501 HOT2 HOT3
KB502 KB503
KEYPAD_BUTTON KEYPAD_BUTTON KEYPAD_BUTTON
KB515 1 KB513 2 KB512 3
KEYPAD_BUTTON KEYPAD_BUTTON KEYPAD_BUTTON
KB508 4 KB504 5 KB506 6
KEYPAD_BUTTON KEYPAD_BUTTON KEYPAD_BUTTON
KB511 7 KB509 8 KB505 9
KEYPAD_BUTTON KEYPAD_BUTTON KEYPAD_BUTTON
KB514 * KB510 0 KB507 #
KEYPAD_BUTTON KEYPAD_BUTTON KEYPAD_BUTTON
VA509 VA506 VA504
EVLC14S02050 EVLC14S02050 EVLC14S02050
A1 B6
BUSSEL2 VDD VREG_MSMP_2.6V
B1 C6
SEN DGND
U501
C1 D6
BUSSEL1 AUDOR LINEIN_R_M
TEA5991_UK
D1 E6
RFGND AUDOL LINEIN_L_P
E1 F6
RFI VCC
C502
C501
DNI
DNI
5 4 3 2 1
L
K
J
I
H
G
F
E
D
C
B
A
LGE Internal Use Only