- 108 -
LGMC
GND
IN
OUT
F
(2V, 0.5mAh, Lithium, 1.67T)
LG Electronics
10
11
7
12
Time Changed:
(AUDIO, PMIC, CHARGE PUMP ETC)
C223
G
3
REV:
Drawing Number:
(MAIN SPEAKER & RECEIVER PATH Control)
8
(3.2x1.6x1.1T)
( REMOTE / END_KEY )
Engineer:
Pin6
9
4
RCV_P / N
QA CHK:
7
SPK_P / N
G
Pin7
Page:
TITLE:
10
MULTI-PORT SWITCH-1
MFG ENGR CHK:
(1%)
(1%)
B
H
Pin7
AUDIO AMP SUB SYSTEM & SIGNAL DISTRIBUTOR
SPK_RCV_SWITCH
BATTERY CURRENT MONITOR
3
Date Changed:
1
LCD BACKLIGHT & CAMERA FLASH LED DRIVER
Pin7
5
E
9
2
R&D CHK:
PMIC & Li-ion CHARGER
6
8
SPK_RCV_SEL
DOC CTRL CHK:
C222
L
H
C
B
6
Pin7
F
2
12
H
Pin6
EXTERNAL RESET
A
BACK UP BATTERY
Pin7
(47 milli Ohm)
1.0
END KEY
2/4
KE770
A3
12 1 8 A
GND DIV
4
Pin6
E
Changed by:
Size:
C
D
GND DIV
POWER ON
DRAWN BY :
SPK_RCV_P / N Links to
A
5
Pin6
11
D
Pin6
1
mentor
2005-06-01
3:07:35 pm
3V1_USB
R230
10K
0.1uF
C215
FB203
2V7_VCXO
C290
VSUPPLY
VBAT
NA
2V11_RTC
C244
0.1uF
C222
1u
C242
27p
KDR331V
3
1
2
FB201
D201
10K
R223
2.2K
R215
2V72_IO
0
R220
VBAT
C209
2.2u
1V8_MEM
2.2K
R209
4.7u
R207
C262
1K
2.2u
C212
C201
1u
C210
2.2u
VLBB1
47
VLBB2
VMMC
20
VRF1
40
VRF2
38
37
VRF3
VRFC
3
VRTC
42
18
VSIM1
19
VSIM2
27
VSSAU
8
VSSFB
7
VSSPW
VSSR
33
VUPU
10
VUSB
11
SW
34
VANA
VBATS
2
12
VBUS
VCHC
44
1
VCHS
36
VCXOEN
VDDA
35
VDDAU
30
VDDB
17
VDDC
46
VDDCH
43
VDDPW
5
39
VDDRF
VIB
13
VINT
21
45
26
AUON
28
29
AUOP
BYP
31
9
FB
GND
49
41
INTOUT
32
IREF
LED
16
22
LRF3EN
4
ON
RESETQ
48
23
SCL
SDA
24
15
SLED1
14
SLED2
6
VBAT
PMB6812
U203
25
AUIN
AUIP
27p
C220
2V72_IO
2V72_IO
C214
1u
C232
1u
4.7K
R202
L203
27nH
GND
2
3
IOUT
LOAD
5
1
NC
VIN
4
VBAT
U201
ZXCT1010E5TA
C218
1u
Q202
RN1307
B
C
E
2.2u
C225
R221
2.2u
100K
C231
C268
100u
EVL5M02200
C260
0.1uF
VA202
1u
C261
C272
220n
VBAT
C266
220n
2.2u
0.1uF
C235
C216
VUSB_PU
1V5_CORE
R203
120
1
2
3
2V85_SIM
2V65_BT
2V85_IO2
2V85_CARD
27p
VCHG
CN202
C246
1u
C263
R212
100K
120
R210
C211
2.2u
R262
4.7K
0.068u
0.068u
C265
LD201
C271
2V11_RTC
LEWWH25LA
100u
C205
3
1
R225
NA
Q201
2
2.2u
C227
2SC5585
R204
47mohm
VUSB_PU
R222
V+
14
100K
COM1
16
COM2
4
8
COM3
COM4
12
GND
6
2
IN1-2
10
IN3-4
NC1
1
5
NC2
NC3
9
13
NC4
15
NO1
3
NO2
NO3
7
11
NO4
17
PGND
TP203
VBAT
U207
ISL8499IRZ-T
VBAT
C224
22u
22u
C223
C208
2.2u
39p
C204
C245
1u
R260
100K
R218
0
100u
VBAT
C269
VBAT
470K
R205
0.1uF
C267
120
R206
100K
2V72_IO
R213
R233
10K
BAT201
2V65_ANA
C270
2.2u
R224
100K
C219
1u
2V85_RF
2.2u
C207
NC7WZ08L8X
7
A1
3
A2
6
B1
2
B2
GND
4
VCC
8
1
Y1
Y2
5
VBAT
MONO+
17
MONO-
23
MONO_IN-
22
PGND
25
RHP3D1
19
RHP3D2
24
RIN
8
ROUT
5
SCL
11
SDA
10
3
VDD1
16
VDD2
2
VOC
U205
CBYPASS
21
GND1
4
12
GND2
20
GND3
14
I2CSPI_SEL
I2CSPI_VDD
7
13
ID_ENB
18
LHP3D1
LHP3D2
1
LIN
9
6
LOUT
15
COM1
3
COM2
9
GND
6
4
IN1
8
IN2
NC1
5
7
NC2
2
NO1
10
NO2
1
VCC
LM4946SQX
U206
TP202
NLAS5223BMNR2G
U208
2.2u
R208
120
C217
VBAT
C202
TP204
FB202
1u
C228
2.2u
4.7K
R261
2V72_IO
C206
2.2u
CN201
G1
G2
1
2
3
VBAT
2.2u
C226
1u
C264
1u
C203
10K
R231
C221
27p
L202
27nH
C229
8
PGND
17
4
VIN
VOUT_BL
13
VOUT_FL
3
1V5_RF
2.2u
C1+
11
12
C1-
14
C2+
C2-
15
2
C3+
C3-
1
16
EN_FLSH
EN_SET
10
9
GND
ISINK1
5
ISINK2
6
7
ISINK3
ISINK4
U202
AAT2805IXN-4.5-T1
R201
220K
R229
10K
1000p
C233
R211
82K
L201
10uH
D+
1
D+IC
6
3
D-
4
D-IC
GND
2
VBUS
5
VBACKUP
1V5_DSP
U209
STF203-22-TC
VA201
EVL5M02200
C234
0.1uF
R271
0
2.2K
R214
R219
0
C250
39p
C213
C230
2.2u
TP201
27p
BBP_SND_L
BBP_SND_R
SPK_N
SPK_P
SPK_RCV_P
SPK_RCV_N
BBP_SND_L
HS_OUT_L
BBP_SND_R
HS_OUT_R
SCL
SDA
END_KEY
RPWRON
PWRON
END_KEY
USB_DP
SPK_RCV_SEL
SPK_N
SPK_P
RCV_P
RCV_N
USB_DM
KP_IN(5)
KP_OUT(1)
END_KEY
LCD_BACKLIGHT
MLED1
MLED2
MLED3
MLED
FLASH_EN
VBACKUP
RTC_OUT
PWRON
_EXTRST
_PMRST
PM_INT
SPOWER_INT
_RESET
SPOWER_INT
BT_VCXO_EN
PWRON
_PMRST
SCL
SDA
VBUS_USB
VCXO_EN
BATT_TEMP
I_MONITOR
MULTI_PORT_0
MULTI_PORT_1
JACK_DETECT
REMOTE_INT
REMOTE_ADC
TXD_0
RXD_0
VBUS_USB
7. CIRCUIT DIAGRAM
Summary of Contents for KE 770
Page 1: ...Service Manual Model KE770 Service Manual KE770 Date April 2007 Issue 1 0 ...
Page 3: ... 4 ...
Page 5: ... 6 ...
Page 49: ...3 TECHNICAL BRIEF 50 3 15 BLUETOOTH Figure 22 BLUETOOTH Functional block diagram ...
Page 57: ...3 TECHNICAL BRIEF 58 RF Block Diagram III 2 RF circuit ...
Page 76: ...Check Points 5 Trouble shooting 77 ...
Page 78: ...5 Trouble shooting 79 ...
Page 82: ...5 Trouble shooting 83 ...
Page 87: ...5 Trouble shooting 88 ...
Page 100: ... 101 6 Download S W upgrade Click on the blue text to select the COM port ...
Page 101: ...6 Download S W upgrade 102 Will change the window as below ...
Page 103: ...6 Download S W upgrade 104 During download the screen will look something like this ...
Page 105: ... 106 ...
Page 111: ... 112 8 PCB LAYOUT ...
Page 112: ... 113 8 PCB LAYOUT ...
Page 113: ... 114 8 PCB LAYOUT ...
Page 114: ... 115 8 PCB LAYOUT ...
Page 115: ... 116 8 PCB LAYOUT ...
Page 121: ...10 Stand alone Test 122 4 Click Update Info for communicating Phone and Test Program ...
Page 125: ... 126 ...
Page 143: ...Note ...
Page 144: ...Note ...