LG -T300 Service Manual page 88

CIRCUIT
U102
AD24
A24
K4
nROM_CS
CS0_N
M3
nRAM_CS
CS1_N
R3
nADV
ADV_N
J6
nWAIT
WAIT_N
P9
ANAMON
T2
MEM_CLK
BFCLK0
K15
FSYS_EN
FSYS_EN
M15
EPN
M16 TP01
EPP
R14
HSL
T14
HSR
N16 TP02
TP03
TP04
AUDIO AMP SUB SYSTEM & SIGNAL DISTRIBUTOR
TP01
EPN
EPP
TP02
HSR
HSL
TP0
TP04
I2C_SCL
I2C_SDA
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C143 C140 C142 C141
DNI DNI 47p 47p
EPN
EPP
HSL
HSR
VBAT
FB208
120
U20
C240 1u
C2
IN1-
C239 1u
C1
IN1+
U203
C231 1u
D2
IN2-
C230 1u
D1
IN2+
C229 1u
D3
IN3-
C228 1u
C3
IN3+
C242
2.2u
SPK
47pF
C203
RCV_SPK_P
RCV_SPK_N
C245 C244
2.2u 0.1u
C5
OUT+
D5
OUT-
A2
HPL
A1
HPR
C236
0.1u
B5 C232 2.2u
CPVDD
A3 C233 2.2u
CPVSS R225
A4
20
CP
A5 C234 2.2u
CN
1V8_VDD
R233
220
C243
C241
0.1u
2.2u
R223
EAR_GND
0
- 89 -
4. TROUBLE SHOOTING
TP05
TP05
TP06
FB206 120
CN201
1
C215
2
100pF
TP06
FB207 120
C204
VA202 VA201
47pF
RCV_SPK_P
RCV_SPK_N
FB2041800
HP_LOUT
HP_ROUT
FB2051800
C235
0.1u
C237 C238
R224 47p 47p
20
LGE Internal Use Only