LG GT540 - Page 121

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LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. Trouble Shooting
VREG_HPVDD_1.8V
C521 47n
47nC520
+VPWR
2.2u
C512
2.2u
C513
C514
1u
C515
39p
10u
C516
2.2u
C517
1uC518
C519 1u
IC500
3B
A4
C3
C2
2B
D1
D3
4D
C1
A1D2
1B
D5
A2
A5
A3
B5
4B
C5
4C
DNG
OUT+
D
DVPH
CPVDD
CPVSS
CN
HPL
OUT-
SAIB
IN2- HPR
IN1+
DDVS
IN3-
IN2+
ADS
IN1-
IN3+
CP
LCS
2.2u
C522
2.2u
C523
K7.4115R
K
7.42
15R
VREG_MSMP_2.6V
10
R513
R514 10
1uC551
1uC552
02815R
02
915
R
u1.0355C u1.0455C
47pC555
47pC556
1R520
1R521
EAR_GND|GND
LINE_ON
A
UDIO_I2C_SCL
A
UDIO_I2C_SDA
RCV_P
LINE_OP
RCV_N
HPH_R
HPH_L
MIC_1P
SPK_RCV+
SPK_RCV-
MIC_1N
EAR_R
EAR_L
Audio SUB SYSTEM
TP1(R519)
TP2(R518)
10
5D
30
5D
405D
J501
2
3
6
5
4
1M5_MIC
M4_L
M3_DETECT
ASSIST
M1_R
M6_GND
VREG_MSMP_2.6V
33p
C503
K2.2 605R
V
REG_HS_MIC_1.8V
47p
C560
2
0
5D
C562
33p
6
3
5R
K002
C563
15p
C561
47p
505D
270n
L503
DNI
C564
FB504
FB502
FB503
10K
R538
10K
R537
C529
10u
EAR_GND
HS_MIC
FM_ANT
EAR_R
EAR_L
EAR_SENSE
3.5 EAR_JACK
HIGH
LOW(DEFAULT)
STATE
UNMATING
EAR_SENSE
MATING
TP3(FB503)
TP4(FB502)