LG KG300 Service Manual page 73

5. CIRCUIT DIAGRAM
1 2
A
E600 E600
Antenna Antenna
P55-02B1-01 P55-02B1-01
B
C611 C611
N.C N.C
C0402 C0402
P1 BANDSW_DCS
L616 L616
L617 L617
0R 0R
1 2
n.c. n.c. C612 C612
L604 L604 N.C N.C
C614 C614
2.7N 2.7N C0402 C0402
L0402 L0402
1 2
1PF 1PF
C
U601 U601
J601 J601
MM8430-2600B MM8430-2600B
6 14
GND
13
GND
5
9
ANT
MM8430-2600B MM8430-2600B C620 C620
22P 22P
6
GND
C622 C622 C0402 C0402
8
GND
N.C N.C 12
GND
C0402 C0402 SHS-C090TK SHS-C090TK
D
E
F
RFT1 RFT1 RFT2 RFT2 RFT7 RFT7 RFT8 RFT8 RFT13 RFT13 RFT14 RFT14
G
L1_18MIL L1_18MIL L1_18MIL L1_18MIL L3_4MIL L3_4MIL L3_4MIL L3_4MIL L4_4MIL L4_4MIL L4_4MIL L4_4MIL
RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP
RFT3 RFT3
RFT4 RFT4 RFT9 RFT9 RFT10 RFT10 RFT15 RFT15 RFT16 RFT16
L1_20MIL L1_20MIL L1_20MIL L1_20MIL L3_6MIL L3_6MIL L3_6MIL L3_6MIL L4_6MIL L4_6MIL L4_6MIL L4_6MIL
RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP
RFT5 RFT5 RFT6 RFT6 RFT11 RFT11 RFT12 RFT12 RFT17 RFT17 RFT18 RFT18
L1_22MIL L1_22MIL L1_22MIL L1_22MIL L3_8MIL L3_8MIL L3_8MIL L3_8MIL L4_8MIL L4_8MIL L4_8MIL L4_8MIL
RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP RFTP
H
RF test strip line
1 2
3 4
C658 C658
VBAT
1N 1N
C601 C601 C602 C602 C603 C603 C604 C604 C0402 C0402
100N 100N 27P 27P 6P 6P 22N 22N
C0402 C0402 C0402 C0402 C0402 C0402 C0402 C0402
C606 C606
1N 1N U600 U600
C0402 C0402
RA605 RA605
2 6
BS VRAMP
3
1 2 16 1 4
DPCS_OUT DPCS_IN
AWT6166 AWT6166
L603 L603 C613 C613 ATT_3DB ATT_3DB
1P 1P
1.8NH 1.8NH AWT6166 AWT6166 235070311032L-A 235070311032L-A
L0402 L0402 C0402 C0402 RA608 RA608
10 7 3
EGSM_OUT EGSM_IN
L605 L605 C615 C615 C616 C616
4
12NH 12NH 6P 6P N.C N.C
L0402 L0402 C0402 C0402 C0402 C0402 ATT_5DB ATT_5DB
235070311052L-A 235070311052L-A
B606 B606
BLM15BB750SN1 BLM15BB750SN1
C657 C657
10 1 2
LB_TX P1
VC1
C619 C619 L0402 L0402 1N 1N
22P 22P B607 B607 C0402 C0402
C0402 C0402 BLM15BB750SN1 BLM15BB750SN1
4 1 2
VC2 HB_TX P1
C621 C621 L0402 L0402
22P 22P B608 B608
C0402 C0402 BLM15BB750SN1 BLM15BB750SN1
VCCRF
2 1 2
VC3 PCS_RX P1
C624 C624 L0402 L0402 C625 C625
22P 22P 2U2 2U2
C0402 C0402 C0603 C0603
VBAT_RF
C646 C646
33P 33P
C0402 C0402
C630 C630
Z602 Z602 2P7 2P7 C627 C627
1.8NH 1.8NH C0402 C0402 33P 33P
4
OUT
L611 L611 C0402 C0402
1 2 1 L609 L609 C632 C632
IN
4.7NH 4.7NH 2P7 2P7
3
OUT
C631 C631 L0402 L0402 C0402 C0402
N.C N.C 1960MHZ 1960MHZ
C0402 C0402
C635 C635
Z601 Z601 2P7 2P7
1.5NH 1.5NH C0402 C0402
4
OUT
L613 L613
L612 L612 C636 C636
1 2 1
IN
3 4.7NH 4.7NH 2P7 2P7
OUT
C629 C629 L0402 L0402 C0402 C0402
N.C N.C 1842MHZ 1842MHZ
C0402 C0402
C638 C638
L615 L615 Z600 Z600 15P 15P
0R 0R 4 C0402 C0402
OUT
L0402 L0402
L614 L614 C641 C641
1
IN
3 18NH 18NH 15P 15P
OUT
C652 C652 L0402 L0402 C0402 C0402
N.C N.C 942MHZ 942MHZ
C0402 C0402
P1,4 VCXOEN
B610 B610
VBAT_RF
VBAT
1 2
C650 C650 C660 C660 BLM15BB750SN1 BLM15BB750SN1
+ + + +
47U/6.3V 47U/6.3V 47U/6.3V 47U/6.3V
CAP-ACASE CAP-ACASE CAP-ACASE CAP-ACASE
L0402 L0402
3 4
5 6 7
PA_EN P1
VAPC P1
R603 R603
C605 C605 R604 R604 10K 10K
220P 220P 15K 15K R0402 R0402
C0402 C0402 R0402 R0402
L602 L602
0R 0R
L0402 L0402
1
2 C607 C607
n.c. n.c.
C0402 C0402
L600 L600
0R 0R
L0402 L0402
1
C617 C617
2
N.C N.C
C0402 C0402
C618 C618
100N 100N
VCCRF C0402 C0402
C623 C623
2U2 2U2
C0603 C0603 U602 U602
57
GNDB
C626 C626
100N 100N
1 42
VCCTXVCO AUXOUT
C0402 C0402
2 41
CREG1 SDATA
3 40
VBAT1 CLK
4 39
VCCRF EN
5 38
PCSRF ENRFVCO
6 37
PCSRFB VCCD
7 36
DCSRFB GNDD
MT6129 MT6129
8 35
DCSRF VCCMOD
QFN56P QFN56P
9 34
GSMRFB GNDMOD
10 33
GSMRF VCXOFRQ
11 32
AMPSRF GNDVCXO
12 31
AMPSRFB REFOUT
13 30
CREG2 VCCVCXO
C600 C600
100N 100N
14 29
ENREG XTAL
C0402 C0402
VBAT_RF
C639 C639 VCCSYN
33P 33P C651 C651 + + C643 C643
C0402 C0402
1N5 1N5 2U2 2U2
C0402 C0402 C0603 C0603 C644 C644
VCCSYN 33P 33P
C647 C647 + + C648 C648 C0402 C0402
2U2 2U2 33P 33P
C0603 C0603 C0402 C0402
PMIC_VTCXO
5 6 7
- 74 -
8 9
I P1
IB P1
Q P1
QB P1
SDATA P1
SCLK P1
LE P1
RFVCOEN P1
VDD
C634 C634
2U2 2U2 C633 C633
C0603 C0603 100N 100N
C0402 C0402
VCCSYN
26Mz P1
C637 C637
C640 C640 220P 220P
2U2 2U2 C0402 C0402
C0603 C0603
C655 C655
5P6 5P6
C0402 C0402
R615 R615
1K 1K
R0402 R0402
C642 C642
220P 220P
C0402 C0402
3 2
OSCOUT GND
R610 R610
1K 1K
R0402 R0402
4 1
VAFC P1
VCC VCONTROL
C645 C645
10N 10N
C0402 C0402 U603 U603 C649 C649
TCVCXO_26MHZ TCVCXO_26MHZ 10N 10N
R611 R611 VT-R32250FH VT-R32250FH C0402 C0402
10R 10R
R0402 R0402
KG300
7310 P1AMT6129 + AWT6166 7310 P1AMT6129 + AWT6166
A3 A3 7312 7312
Thursday, August 10, 2006 Thursday, August 10, 2006
8 9
10
A
B
C
D
E
F
G
H
P1D P1D
6 6 8 8
10