Circuit Diagram - LG B2050 Service Manual

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7. CIRCUIT DIAGRAM

1
2
JTAG1
1V8_VCORE
VBAT
_F_WE
_WR
TDO_0
TDO_0
C100
C101
TCK
TCK
47n
1u
TMS
TMS
TDO_1
TDO_1
RPWON
RPWRON
VBAT
TDI
TDI
A
JTAGEN
JTAGEN
C1
GND
ADD00
ADD0
E5
ADD01
ADD1
D3
ADD02
ADD2
F6
ADD03
ADD3
D1
ADD04
ADD4
F5
ADD05
ADD5
G6
ADD06
ADD6
E1
ADD07
ADD7
G5
ADD08
ADD8
F3
ADD09
ADD9
H8
ADD10
ADD10
F1
ADD11
ADD11
G3
ADD12
ADD12
G1
ADD13
ADD13
H3
ADD14
ADD14
J6
ADD15
ADD15
J8
ADD16
ADD16
J3
ADD17
ADD17
J5
ADD18
ADD18
J1
ADD19
ADD19
K6
ADD20
ADD20
K3
ADD21
ADD21
K1
ADD22
ADD22
B
K9
ADD23
ADD23
TP103
V5
_RAM_CS
NRAMCS1
TP105
P8
NRAMCS2
TP107
N8
_ROM_CS1
NROMCS1
TP108
P9
_ROM_CS2
GPIO_44_NROMCS2
TP110
R4
_WR
NWE
TP112
V1
_LBS
NLWR
TP114
U1
_UBS
NHWR
TP116
P5
_RD
NRD
T4
_ADV
NADV
V2
_WAIT
NWAIT
V4
BURSTCLK
BURSTCLK
T5
13MHZ
NGPCS1
V6
C128
_MIDI_CS
NAUXCS1
N9
NA
_LCD_CS
GPIO_42_NMAIN_LCD_CS
V7
GPIO_43_NSUB_LCD_CS
C129
1000p
N10
X100
CLKIN
MC-146_12.5pF
TP122
P13
CLKON
CLKON
3
4
C9
OSCOUT
E9
C
OSCIN
2
1
F9
PWRON
PWRON
V3
_RESET
NRESET
32.768KHz
C130
L18
NA
RADIO_STO
GPIO_0_IRDA_TX
L14
RADIO_DETECT
GPIO_1_IRDA_RX
K16
SPK_RADIO_SEL
GPIO_2_NIRDA_EN
K18
GPIO_3
K14
RADIO_SEL
GPIO_4
J16
LCD_DIM_CTRL
GPIO_5
KDS121E
J18
RADIO_SDA
GPIO_6
H16
ONNOFF
RADIO_SCL
GPIO_7
2
J14
RPWRON
GPIO_8
3
H18
PWRON
GPIO_9
1
G16
_F_WP
GPIO_10
D101
J13
DSR
GPIO_11
G18
_MIDI_RESET
GPIO_12
H14
HOOK_DETECT
GPIO_13
G14
RADIO_VOL_CLK
GPIO_14
F16
_LCD_RESET
GPIO_15
F18
LCD_ID
GPIO_16
E18
SPK_SEL
GPIO_17
D
E16
DEBUG_RX
GPIO_33_DEBUG_RX
VCHARGE
C18
DEBUG_TX
GPIO_34_DEBUG_TX
B18
GPIO_35
A18
RADIO_AMP_SHDN
GPIO_36
VA333
C16
R130
_MIDI_IRQ
GPIO_37
AVLC14S02050
A17
100K
BATT_EPROM
GPIO_38
C15
RINGTONE
GPIO_39
K5
GPIO_40
T7
JACK_DETECT
GPIO_45
2V8_VMEM
T8
R131
RADIO_VOL_CTRL
GPIO_46
E11
100K
GPIO_55
R117
4.7K
A12
VA332
GPIO_56
AVLC14S02050
G13
R118
AMP_EN
GPO_22_KEY_BACKLIGHT
D18
10K
LCD_BL_EN
GPO_23_LCD_BACKLIGHT
D15
KEY_ROW0
KEYPADROW0
E14
KEY_ROW1
KEYPADROW1
A16
KEY_ROW2
KEYPADROW2
E13
GPIO_55
GPIO_56
BOOT MODE
KEY_ROW3
KEYPADROW3
A15
KEY_ROW4
KEYPADROW4
L
L
BYPASS
E
F13
L
H
UART BOOT
KEY_COL0
KEYPADCOL0
A14
KEY_COL1
KEYPADCOL1
C14
H
L
USB BOOT INT CLOCK
KEY_COL2
KEYPADCOL2
C13
H
H
USB BOOT EXT CLOCK
KEY_COL3
KEYPADCOL3
A13
KEY_COL4
KEYPADCOL4
1
2
LGIC(42)-A-5505-10:01
3
4
5
2V8_VMEM
2V8_VEXT
2V8_VMEM
2V85_VSIM
2V8_VEXT
1V8_VRTC
C102
C103
C104
C105
C106
C107
C108
1u
1u
47n
1u
1u
47n
47n
L3
TP100
DATA0
DATA00
L6
DATA1
DATA01
L1
DATA2
DATA02
L8
DATA3
DATA03
M1
DATA4
DATA04
L5
DATA5
DATA05
N3
DATA6
DATA06
TX_RAMP
N1
DATA7
DATA07
P3
DATA8
DATA08
N6
DATA9
DATA09
P1
DATA10
DATA10
R3
DATA11
DATA11
R1
_RESET
DATA12
DATA12
N7
DATA13
DATA13
P6
DATA14
DATA14
T1
DATA15
DATA15
C123
100p
A4
TP101
GPIO_48_ABB_IRQ
H9
TP102
CLKOUT
E7
TP104
CLKOUT_GATE
A6
TP106
GPO_29_ABBRESET
T11
JTAGEN
L11
GPIO_18_TCK
V12
GPIO_19_TMS
P12
GPIO_20_TDI
TDI
V13
GPIO_21_TDO
TDO_1
C8
TP119
GPO_0_RXON
E8
TP120
GPO_1_TXON
TP121
A7
GPO_5_ARSM
C7
GPO_6_ATSM
C6
CSDI
E6
CSDO
J9
CSFS
C5
U100
BSDO
A3
BSOFS
A2
AD6527ABC
BSDI
C4
BSIFS
B1
ASDI
A1
ASDO
C3
ASFS
V14
GPO_2
PRECHARGE
T13
GPO_3
ONNOFF
T14
GPO_4
RF_PWR_DWN
T15
GPO_7
V16
GPO_8
BATT_TEMP
V17
GPO_9
ANT_SW1
V18
GPO_10
ANT_SW3
R16
GPO_11
ANT_SW2
T16
PA_EN
GPO_16
T18
GPO_17
PA_BAND
P16
GPO_18
U18
GPO_19
S_EN
R18
GPO_20
S_DATA
RADIO_RSSI
P18
GPO_21
S_CLK
T9
DPLUS
L10
DMINUS
A11
GPIO_22
J10
GPIO_49
E10
GPIO_50
H10
GPIO_51
C10
GPIO_52
F10
GPIO_53
A10
GPIO_54
V9
GPIO_23_SIM_RESET
SIM_RST
V11
GPIO_24_SIM_EN
P11
GPIO_47_SIM_VSEL
T10
SIMCLK
SIM_CLK
V10
SIMDATAIO
SIM_DATA
N18
USC0
USC0
N14
USC1
USC1
M16
USC2
USC2
N13
USC3
USC3
M18
USC4
USC4
L16
USC5
USC5
M13
USC6
USC6
3
4
5
6
7
NC_R6
CHRDACREF
VBAT
AD6537B
NC
NC
AD6535
0
510
22u
C110
C111
C109
22p
47n
2012
A12
IP
IP
A13
IN
IN
A15
QP
QP
A14
QN
QN
B14
AFC
AFCDAC
B12
PA
C120
C121
47p
0.082u
R105
T1
RESET
T13
100
KEY_ROW0
KEYOUT
T14
C124
POWERKEY
KEYON
R7
100p
RPWRON
DBBON
A2
CLKON
VCXOEN
T12
NC_T12
D1
INT
L1
MCLK
J2
MCLKEN
M1
ABBRESET
JTAGEN
TCK
TMS
B2
TCK
B1
TMS
A1
TDI
C1
TDO_0
TDO
U101
K1
RXON
K2
AD6537BABC
TXON
J1
ASM
H1
CSDO
H2
CSDI
L2
CSFS
G2
BSDI
F1
BSIFS
E2
BSDO
G1
BSOFS
D2
ASDO
E1
ASDI
F2
ASFS
VREF
A16
NC_A16
C16
NC_C16
C132
1u
B15
REF
C137
1u
A10
REFBB
C138
1u
B11
REFOUT
B6
BATTYPE
R112
82K
D15
REFCHG
A8
C142
TEMP2
B9
1u
TEMP1
A9
AUXADC2
B10
AUXADC1
L16
LIGHT1
R140
M15
LIGHT2
M16
100
LIGHT3
Section
Designer
Checked
Approved
Iss.
Notice No.
Date
Name
LG Electronics Inc.
- 97 -
8
9
10
IBIAS
REFPWR
CRST
CHGOSC
NC
NC
NC
NC
1.2M
0
0.1uF
0.01uF
C113
P1
VCORE1
N1
VCORE2
C114
T3
VMEM1
T2
VMEM2
C115
T7
VRTC
C116
T6
VSIM
H16
C117
VABB
C118
N16
VMIC
C119
D16
VVCXO
E15
NC_E15
C122
A4
VEXT1
B4
VEXT2
T4
VBAT
VBAT_NET
E16
NC_E16
F16
NC_F16
T15
NC_T15
VBAT
R1
NC_R1
R3
VMEMSEL
T5
GND_NET1
G16
NC_G16
B7
R108
NC_B7
B5
NC_B5
0.2
B8
VBATSENSE
A5
VCHG
A7
R109
ISENSE
A6
GATEDRIVE
R13
AIN3L
R14
AIN3R
P15
AIN2P
MIC_P
R15
AIN2N
MIC_N
P16
AIN1P
HEADSET_MIC_P
R16
C131
AIN1N
R12
NC_R12
NA
HEADSET_MIC_N
C133
C134
C135
C136
39p
39p
39p
39p
CLOSE TO AD6537B
R111
4.7
J15
AOUT1P
K15
AOUT1N
C139
R11
AOUT2P1
39p
R114
T11
AOUT2P2
T9
AOUT2N1
4.7
R9
AOUT2N2
J16
AOUT3P
HEADSET_SPK_P
K16
AOUT3N
HEADSET_SPK_N
C2
GPI
RINGTONE
C143
C144
39p
39p
Date
Sign & Name
MODEL
B2050
2004.
KIM H.J.
12.08
2004.
LEE S.Y.
12.08
DRAWING
Hermes 6527 ,Typhoon 6537B
NAME
2004.
KIM B.Y.
12.08
DRAWING
Ver.1.0
NO.
GUIDE HOLE
OJ1
OJ2
OJ3
OJ4
OJ5
A
R104
10K
1u
C149
C112
27p
1u
1u
1u
1u
2.2u
(1608)
1u
1u
1u
B
VCHARGE
C127
D100
10u
CUS02
330
Q100
G
S
4
5
D3
D4
3
6
D2
D5
2
7
D1
D6
1
8
TPCF8102
C
REC_P
REC_N
C140
C141
39p
39p
D
Sheet/Sheets
1/5
LG Electronics Inc.

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