LG KE800 Service Manual page 87

7. CIRCUIT DIAGRAM
1 2 3
KP_OUT(1)
A
1
R440
2SC5585
END_KEY
2 Q402
10K
3
R441
KP_IN(5)
100K
B
C
D
E
FM RADIO
2V72_IO 2V85_IO2
R431
0
F 1 18
GND1 VA
Line width 0.5mm C430 100p 2 17
FM_ANT FMIP GND5
Clearance 1mm 3 16
RF_GND U406 LOUT
C431 4 15
FMIN SI4700 ROUT
5 14
GND2 GND4
NA 6 13
GND3 VD
R438
C432 C433
10K
0.1u 1u
G
C435 0.1u
C437 TC7SH04FS
27p
H
1 2 3
4 5 6
MULTI MICROPHONE SWITCH
2V65_ANA
U402
FSA2267L10X
1 9
MAIN_MIC1_P 1B0 1A MIC1_P
2 8
MULTI_MIC1_P 1B1 1S
3 7
MAIN_MIC1_N 2B0 2S MIC_PATH_SEL
4 6
MULTI_MIC1_N 2B1 2A MIC1_N
C405 C406 C407 C408 C409
100p 100p 100p 100p 0.1u
MIC_PATH_SEL
H
L
Pin6 TXD_0
Pin7 RXD_0
JACK_DETECT
Pin6 REMOTE_INT
Pin7 REMOTE_ADC
R433
USB_PU
R434
Pin6 USB_DP
R435 0
FM_SND_L
R436 0
FM_SND_R
R437
Pin7 USB_DM
C434
1u
2V72_IO
R439 47K
U407
VCC 5
C436 0.1u
4 1
CLK32K
GND 2
4 5
7 8
2V65_ANA
HOOK_DETECT
R407
1.5K
R409 2.2K
MIC2_N
MIC2_P C403 0.1u
C404 0.1u
JACK_TYPE
MULTI_PORT_2
C412
C410 C411 MULTI_PORT_3
27p 27p MULTI_PORT_0
10u
Application MULTI_PORT_1
JACK_DETECT
Multi-Mic
Main Mic RPWRON
TX_DEBUG
RX_DEBUG
FM_ANT
MULTI-PORT SWITCH 1
2V72_IO
VBAT
R425
10K
VBAT
U405
ISL8499IRZ-T
R429
1 12
NC1 Pin7 COM4 MULTI_PORT_1
2 11 10K
IN1-2 NO4
3 10
NO2 IN3-4
4 9
COM2 Pin7 NC3
MULTI_PORT_0
C
OUT
R430
Q401 B
C429
VBUS_USB
RN1307 IN
10K
0.1u
GND E
R432
10K
1.5K
22
22
IN3-4(USB : L) IN1-2(JACK : L) Pin6 Pin7 Application
L Donít Care USB_DP USB_DM USB
H TXD_0 RXD_0 UART
H
L REMOTE_INT REMOTE_ADC HEADSET
6 7 8
- 88 -
9 10 11
18PIN MUILTIPORT RECEPTACEL
2V85_IO2
2V65_ANA
VBUS_USB 2V72_IO 2V72_IO VCHG VBAT
R401
U401
LMV7291MGX-NOPB
1M
5
4 VIN-
R402
1 VCC
OUT 3 VIN+
GND
0
C401 2
R408
100p
220K
C402 27p
FB408
L401 100nH
R411 33
FB403
R412 33
FB404
FB409
FB410
FB411
R414 1K
R446 NA
DSR
FB405
R416 47
R417 47
C415 C416 C413 C414
VA401 VA402
39p 39p 100p 4.7u
C420
27p
As close as possible to the connector
MULTI-PORT SWITCH 2
2V72_IO
2V85_IO2
U404
SMD: FSA2267A
FSA2267L10X
R424
C424 27p
10K
C425 100u
1 9
HS_OUT_R 1B0 1A
R426 47 2 8 L404 100nH
RTS_0 1B1 1S
R427 0
C426 100u
3 7
HS_OUT_L 2B0 2S
L405 100nH
R428 47 4 6
CTS_0 2B1 2A
C427 27p
C428
0.1u
DIF_VSYNC MULTI_PORT_3 MULTI_PORT_2
H RTS_0 CTS_0
L HS_OUT_R HS_OUT_L
Engineer:
LG Electronics
Drawn by:
R&D CHK:
TITLE:
KE800
DOC CTRL CHK:
REV-1.2
MFG ENGR CHK:
Changed by: Date Changed: Time Changed: QA CHK: REV: Drawing Number:
B
mentor 2006-04-07 5:31:08 pm
9 10 11
12
A
CN401
21
19
1
2
3
4
5
6
B
7
8
9
10
11
12
13
14
15
16
17
18
20
22
C
R442
R443
L402
0
100nH 0
D
MULTI_PORT_3
DIF_VSYNC
E
MULTI_PORT_2
Application
Debug
F
HEADSET
G
H
Size:
A3
12 1 8 A
Page:
4/5
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