5. Trouble shooting
- 112 -
5.13.13 Checking FEM & Mobile SW
Mobile SW & FEM Circuit Diagram
GSM850
DCS
LB RF Input
Front End Module
EGSM
PCS
HB RF Input
C415
0.1u
C405
VRF2V85
C418
C403
0.75p
C413
L403
2.2nH
C416
KMS-506
SW401
ANT
G1
G2
RF
0
R403
C414
C417
C412
C419
6
TX1G
8
TX2G
22
VCTRL1
VCTRL2
21
VCTRL3
20
VDD
3
EGSM_RX-
16
GMS_RX-
18
GND1
2
GND10
25
26
GND11
GND2
4
5
GND3
GND4
7
9
GND5
GND6
10
GND7
11
23
GND8
GND9
24
19
13
PCS_RX-
12
U401
YGHF-S006A
ANT
1
15
DCS_RX-
14
17
33p
C401
Checking Points
SW401
C401
R436 (ANT_SW2)
R437 (ANT_SW1)
R435 (ANT_SW3)
Figure 30. Mobile SW & FEM Circuit
Figure 31 Mobile SW & FEM
Table 5. FEM TX Control Logic
RX Mode
EGSM
DCS
PCS
ANT_SW1
On
On
On
ANT_SW2
Off
On
On
ANT_SW3
Off
Off
Off
Содержание Prada KE850
Страница 1: ...Date March 2007 Issue 1 0 Service Manual Model KE850 Service Manual KE850 ...
Страница 3: ... 4 ...
Страница 5: ... 6 ...
Страница 70: ...4 PCB layout 71 4 PCB layout 4 1 Main Sub PCB component placement Main PCB Top Main PCB Top placement ...
Страница 71: ...4 PCB layout 72 Main PCB bottom Main PCB bottom placement ...
Страница 115: ... 116 6 Download S W upgrade 6 Press the START button ...
Страница 116: ... 117 6 Download S W upgrade 7 Stand by condition Wait is displayed connect the Phone KE850 KE850P40 7 V09a ...
Страница 117: ...6 Download S W upgrade 118 KE850 KE850P40 7 V09a KE850 KE850P40 7 V09a ...
Страница 127: ... 128 LGMC 8 pcb layout ...
Страница 128: ... 129 LGMC 8 pcb layout ...
Страница 129: ... 130 LGMC 8 pcb layout ...
Страница 130: ... 131 LGMC 8 pcb layout ...
Страница 131: ... 132 8 pcb layout ...
Страница 132: ... 133 8 pcb layout ...
Страница 133: ... 134 8 pcb layout ...
Страница 134: ... 135 8 pcb layout ...
Страница 135: ... 136 8 pcb layout ...
Страница 136: ... 137 8 pcb layout ...
Страница 137: ... 138 ...
Страница 139: ...9 RF Calibration 140 9 2 3 Click SETTING Menu 9 2 4 Setup Ezlooks menu such as the following figure ...
Страница 141: ...9 RF Calibration 142 9 2 7 Select MODEL 9 2 8 Click START for RF calibration 9 2 9 RF Calibration finishes ...
Страница 142: ...9 RF Calibration 143 9 2 10 Calibration data will be saved to the following folder Saving format year month day PASS ...
Страница 149: ... 150 ...
Страница 151: ... 152 ...
Страница 172: ...Note ...
Страница 173: ...Note ...