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7. CIRCUIT DIAGRAM
1
2
MIDI/SPK
U201
YMU762C-QZ
MCLK
LCD_RESET
1
CLK1
4
_RST
A
30
A(1)
A0
C203
31
_RD
_RD
1000p
29
MIDI_CS
_CS
5
NC
28
_WR
_WR
3
MELODY_INT
_IRQ
D(0:7)
D(0)
27
D0
26
D(1)
D1
D(2)
25
D2
24
D(3)
D3
D(4)
23
D4
22
D(5)
D5
D(6)
21
D6
20
D(7)
D7
3.3K
V_IO
6
PLLC
R208
9
VREF
32
IOVDD
B
7
VDD
8
VSS
C213
C214
C215
0.1u
1000p
0.1u
RECEIVER
C
VA204
C228
EVL5M02200
NA
CN201
L203
270nH
1
RCV_P_SW
C229
2
3.3p
RCV_N
L204
270nH
C230
VA205
NA
EVL5M02200
VBAT
IND LED
D
R219
NA
C243
NA
LD200
NA
LEDC
R221
3
NA
2
Q200
INDLED_R
2SC5585
1
E
R222
NA
NA
1
2
LGIC(42)-A-5505-10:01
3
4
C200
0.1u
11
V_IO
U200 DG3000DB
HPOUT_R
10
B1
A1
HPOUT_L
IN
NO
C202
C201
R200
R201
12
B2
A2
EQ1
V+
COM
22n
39K
1u
33K
B3
A3
13
EQ2
GND
NC
C204
47p
R204
14
EQ3
2
LED
120K
19
MTR
VIBRATOR
CN200
17
1
SPOUT1
C207
2
27p
18
SPOUT2
VBAT
C209
C210
47p
47p
15
SPVDD
C211
C212
0.1u
4.7u
16
SPVSS
3
4
5
6
7
VOICEMAIL_EN
RCV_P
RCV_P_SW
(1608)
HSMICBIAS
HOOK_DETECT
NA
10p
C216
C217
C221
0.1u
HSMICP
L200
100nH
C222
10u
HSO
L202
100nH
C226
C227
NA
8p
Close to ABB
MIC
R215
MICBIAS
1K
C231
47p
(1608)
15p
C233
R217
C234
MICP
220n
1K
C236
47p
R218
C240
MICN
220n
C241
1K
15p
Section
Designer
Checked
Approved
Iss.
Notice No.
Date
Name
5
- 94 -
8
9
EAR-MIC
R202
R203
10K
1K
C206
(1608)
4.7u
C205
R206
4.7u
R205
47K
5.6K
R207
1K
C208
47p
EVL5M02200
EVL5M02200
VA200
VA206
C218
C219
J200
47p
27p
2
4
R209
4.7
3
1
L201
5
C223
C224
100nH
47p
120p
JACK_DETECT
R211
R212
20K
VA201
VA207
EVL5M02200
EVL5M02200
20K
Close to DBB
Close to Ear-jack
R216
2.4K
C232
4.7u
C235
NA
VA202
OB4-15L42-C33L
C237
C238
C239
2
10p
47p
27p
1
MIC200
C242
R220
NA
1K
VA203
Date
Sign & Name
MODEL
MG180c
06/02/06
JASON
G.C.LIM
DRAWING
AUDIO
NAME
H.KANG
DRAWING
Ver_1.0
LG Electronics Inc.
NO.
LG Electronics Inc.
10
A
B
C
D
Sheet/
Sheets
2/5
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Troubleshooting
