- 101 -
GPO_11
RX
6
(GPO_21)
(GPO_20)
22uF
C
Notice No.
8
RF_LDO
NO.
GPO_9
GPO_16
B
4
(1608)
DRAWING
D
(GPO_4)
(GPO_19)
NAME
1
3
(1608)
(1608)
4
L
2
5
L
L
LG Electronics Inc.
D
GSM_TX
Checked
Date
E
H
3
Sheet/Sheets
LGIC(42)-A-5505-10:01
Iss.
7
H
DCS_TX
ANT_SW2
ANT_SW1
B
A
Section
A
1
C
GPO_17
Sign & Name
F2400
5/6
Ver.1.0
RF
5
L
Name
Approved
DRAWING
9
2
MODEL
10
Designer
LG Electronics Inc.
Date
(AD6535_AFCDAC)
3
8
VCC1B
19
VSENSE
33p
C510
9
10
GND3
GND4
11
13
GND5
GND6
14
GND7
16
GND8
18
21
GND9
6
GSM_IN
GSM_OUT
12
NC
1
2
PAC_ENABLE
23
PGND
15
RSVD
VAPC
22
VBATT
20
VCC1A
U501
SKY77325
4
BS
DCS_PCS_IN
5
17
DCS_PCS_OUT
GND1
7
GND2
51
R1111
ANT
G1
G2
RF
C649
0.5p
KMS-505
SW500
L503
0
100
R502
1p
C527
1p
C533
RF2.85V
C525
0.01u
ANT502
RF2.85V
R503
47
NA
NA
C650
RF2.85V
C905
C526
NA
1p
C529
GND
3
OUT
VCC
4
1
VCONT
36
R506
26MHz
X502
2
NA
C648
L504
0
27p
C652
C501
27p
6.8nH
L505
R504
130
ANT501
7
TXQP
6
9
VDD1
32
VDD2
XEN
26
XIN
8
XOUT
27
10
_PDN
12
_SEN
18
RFIGN
21
RFIGP
20
RFIPN
17
RFIPP
16
22
RFOD
23
RFOG
RXIN
3
2
RXIP
1
RXQN
28
RXQP
SCLK
13
SDI
14
SDO
11
TXIN
5
TXIP
4
TXQN
SI4205
U505
DIAG1
24
25
DIAG2
GND1
15
GND2
29
30
GND3
GND4
31
33
GND5
GND6
34
35
GND7
GND8
36
RFIDN
19
RFIDP
130
R505
22p
C515
51
R1108
VBAT
C653
27p
C534
2.2u
2V75_VVCXO
VBAT
27nH
L509
0.1u
C998
10u
C536
C508
33p
3
DCS_TX
EGSM_RX
10
5
EGSM_TX
4
GND1
6
GND2
7
GND3
9
GND4
12
GND5
13
GND6
GND7
14
11
VC1
2
VC2
U504
SHS-C090DR
ANT
8
DCS_RX
1
C640
NA
1p
R509 1K
C523
O2
4
ANT504
FL502
EFCH942MTCA7
G1
2
G2
5
IN
1
O1
3
27p
C654
4
BYP
EN
3
GND
2
1
IN
5
OUT
C535
U503
MIC5255-2.85BM5
G1
2
G2
5
IN
1
3
O1
O2
4
0.022u
FL503
EFCH1842TCA7
27p
C509
C537
C502
4.7u
0.01u
10p
C506
C635
27p
R501
100
C638
39p
C507
27p
0.01u
C599
C503
7p
C540
22p
C530
C500
1.5p
1u
RF2.85V
C531
C590
C591
39p
39p
3.3nH
L507
C636
ANT500
33p
R508
150
51
R1110
51
R1109
C514
C651
27p
100p
1000p
C516
ANT503
C642
27p
C505
18p
C637
22p
10K
R512
150
R507
0.01u
C504
27p
C639
CLKON
26MHz_C
S_EN
IN
IP
QN
QP
AFC
26MHz_A
S_DATA
ANT_SW1
RF_PWR_DWN
S_CLK
PA_EN
ANT_SW2
TX_RAMP
PA_BAND
7. CIRCUIT DIAGRAM
Summary of Contents for F2400
Page 3: ......
Page 27: ...3 TECHNICAL BRIEF 28 Figure 4 SYSTEM INTERCONNECTION OF AD6527 6527B EXTERNAL INTERFACE ...
Page 29: ...AD6537B 3 TECHNICAL BRIEF 30 Figure 5 AD6537B FUNCTION BLOCK DIAGRAM ...
Page 39: ...3 TECHNICAL BRIEF 40 Figure 16 AUDIO LOGIC IN AD6537B ...
Page 43: ...4 TROUBLE SHOOTING 44 4 1 RX Trouble 4 TROUBLE SHOOTING Figure 4 1 Test Points Checking Flow ...
Page 47: ...4 TROUBLE SHOOTING 48 Checking Flow ...
Page 48: ...4 TROUBLE SHOOTING 49 5 Checking SAW Filter Circuit Test Points Checking Flow Circuit Diagram ...
Page 49: ...4 TROUBLE SHOOTING 50 6 Checking RX IQ Test Points Circuit Diagram Waveform Checking Flow ...
Page 50: ...4 TROUBLE SHOOTING 51 4 2 TX Trouble Test Points Checking Flow ...
Page 54: ...4 TROUBLE SHOOTING 55 3 Checking Ant SW Mobile SW ...
Page 56: ...4 TROUBLE SHOOTING 57 5 Checking TX IQ Test Points Waveform Circuit Diagram Checking Flow ...
Page 57: ...4 TROUBLE SHOOTING 58 4 3 Power On Trouble ...
Page 58: ...4 TROUBLE SHOOTING 59 C126 C124 D101 R112 C119 C101 U101 R399 ...
Page 59: ...4 TROUBLE SHOOTING 60 4 4 Charging Trouble Q101 R120 D102 CN202 4 5 PIN ...
Page 60: ...4 TROUBLE SHOOTING 61 ...
Page 61: ...4 TROUBLE SHOOTING 62 4 5 LCD Trouble CN601 9 23 PIN C401 U402 C417 ...
Page 62: ...4 TROUBLE SHOOTING 63 ...
Page 63: ...4 TROUBLE SHOOTING 64 4 6 Receiver Trouble R105 R104 ...
Page 64: ...4 TROUBLE SHOOTING 65 4 7 Speaker Trouble R213 R214 U204 C215 C216 C217 R219 R218 U203 ...
Page 65: ...4 TROUBLE SHOOTING 66 C211 C219 C217 C216 C217 C216 ...
Page 66: ...4 TROUBLE SHOOTING 67 4 8 MIC Trouble C108 C226 R232 R231 C225 C223 R235 R234 ...
Page 67: ...4 TROUBLE SHOOTING 68 ...
Page 68: ...4 TROUBLE SHOOTING 69 4 9 Vibrator Trouble R1101 R1100 Q402 D202 1 ...
Page 69: ...4 TROUBLE SHOOTING 70 ...
Page 70: ...4 TROUBLE SHOOTING 71 4 10 Key Backlight LED Trouble ...
Page 71: ...4 TROUBLE SHOOTING 72 ...
Page 72: ...4 TROUBLE SHOOTING 73 4 11 SIM Detect Trouble ...
Page 73: ...4 TROUBLE SHOOTING 74 4 12 Ear Jack Trouble U201 C201 R201 R207 R208 J201 R209 ...
Page 74: ...4 TROUBLE SHOOTING 75 ...
Page 75: ...4 TROUBLE SHOOTING 76 ...
Page 78: ...4 TROUBLE SHOOTING 79 ...
Page 79: ...4 TROUBLE SHOOTING 80 4 14 RTC Trouble X101 R113 ...
Page 82: ...4 TROUBLE SHOOTING 83 ...
Page 95: ...Note 96 ...
Page 102: ... 103 8 PCB LAYOUT ...
Page 103: ... 104 8 PCB LAYOUT ...
Page 109: ......