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4.9 Speaker Trouble
TEST POINT
U204
CIRCUIT
1V8_VCAM
2V8_VCAM
C202
C203
0.1u
4.7u
_MIDI_RST
C235
26M_MIDI
R202
_MIDI_CS
6.8K
C211
C212
C210
A_DATA08
2200p
100p
1000p
A_DATA09
A_DATA10
A_DATA11
A_DATA12
A_DATA13
A_DATA14
A_DATA15
_MIDI_IRQ
_MIDI_IRQ
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
ACOUSTIC & MIDI
FB200
C200
C201
4.7u
1u
C204
C205
4.7u
0.1u
C206
0.1u
D3
_RST
1000p
E2
CLKI
D2
C2
PLLC
TXOUT
H4
_CS__SS
F1
A2
MADD01
A0
EXC
E3
MADD02
A1
J5
M_WR
_WR_SCK
G4
C6
M_RD
_RD_SI
EXTOUT
G3
D0
J2
D1
H2
B5
D2
BBL
G2
D3
H1
D4
J1
B6
D4_H1
HPOUTL
F3
D5
G1
D6
F2
C5
D7
BBR
J6
SO
H5
A6
SMODE
HPOUTR
U204
G5
IFSEL
YMU792P
G7
B3
MTR
HPC
J8
EUSY0306401
MTR_G7
H8
B4
LED0
EQ1
H7
LED1
J7
A3
LED2
EQ2
E7
A4
_IRQ
EQ3
H6
GPIO
A7
SPOUT2
G8
BCLK
F7
B7
LRCK
SPOUT1
F8
A8
SDIN
SPOUT1_B7
E6
C3
MCLK
RXIN
A1
RXIN_C3
D6
TESTI0
F6
C4
TESTI1
EXTIN
G6
TESTI2
C7
D4
TESTI3
INDEX
4. TROUBLE SHOOTING
64 POLY MIDI IC(MP3 Ringtone)
VBAT
VBAT
SPK_N
SPK_P
C234
C208
0.1u
27p
SPK_SEL
R230
NA
REC_P
NLAS5223BMNR2G
R231
NA
REC_N
R203
100K
C209
C213
10u
1u
MIDI_HP
FM_AUDIO
MIDI_HPR
C233
R224
0.1u
20K
C217
R207
SPKP_P
24K
0.01u
ADD01
ADD02
C218
R209
A_WR
A_RD
390p
82K
SPK_N
SPK_P
C219
0.068u
FM_AUDIO_R
REC_P
R225
NA
C221
C222
47p
47p
- 65 -
SPK_RCV_P
U200
1
10
VCC
NO2
2
9
SPK_RCV_N
NO1
COM2
3
8
COM1
IN2
4
7
IN1
NC2
5
6
NC1
GND
VA200
VA201
C236
EVL5M02200
EVL5M02200
27p
SPK_SEL
L
RECEIVER
H
SPEAKER
R226
100ohm
MADD01
R227
100ohm
MADD02
R228
0
M_WR
R229
0
M_RD
C237
C238
C239
C240
7.5p
7.5p
7.5p
7.5p
LGE Internal Use Only
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