LG -E450 Service Manual page 138

HPH_L
HPH_R
SPK_P
SPK_N
I2C_SENSOR_SDA
I2C_SENSOR_SCL
SPK_OUT_P
SPK_OUT_N
LGE Internal Use Only
+1V8_VIO_MTK
C402 2.2u
C4
IN3-
RCV CALL
C3
IN3+
C407 2.2u
A3
IN1+
C408 2.2u
B3
IN1-
A4
C410 39n
IN2+
C412 39n B4
IN2-
B2
SDA
C2
SCL
C416
2.2u
MAIN GNDMAIN GND
Speaker
R908
0
R909
0
- 138 -
VBATT
C400 C401
2.2u 100n
MAIN GND
FB400
E3
OUT+
E4
OUT-
FB401
B1
HPL
U401
A1
HPR
D1
CP
C413
2.2u
E1
CN
C417 C418
2.2u 2.2u
0
R403
0ohm SHORT PAD : SAFP0000401 (0603)
0ohm OPEN PAD : SAFO0000401 (0603)
CN900
1
2
Copyright © 2013 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
120
SPK_OUT_P
SPK_OUT_N
120
EAR_L
EAR_R
HS_GND
Only for training and service purposes