(3) Checking Mobile SW & FEM
4. TROUBLE SHOOTING
- 41 -
SW500.ANT
SW500.RF
VC_DCSPCS(VC1)
VC_EGSM(VC2)
FL500
SW500
C540
C541
FL500.12
(C533)
FL500.10
(C533)
FL301. 10
VC1
VC2
Low
Low
VC_DCSPCS
Low
Low
Low
Low
VC_EGSM
C515
22p
22
GND11
GND12
23
24
GND13
4
GND2
6
GND3
GND4
7
16
GND5
GND6
17
18
GND7
GND8
19
20
GND9
14
PCS_RX1
PCS_RX2
15
VC_DCSPCS
3
VC_EGSM
9
HWXQ511
ANT
1
DCSPCS_TX
5
12
DCS_RX1
DCS_RX2
13
10
EGSM_RX1
EGSM_RX2
11
8
EGSM_TX
2
GND1
GND10
21
FL500
TP501
0
R516
TP500
TP502
R503
0
R502
5.6nH
R518
270p
C541
0
R588
2.2nH
270p
C540
KMS-506
SW500
ANT
G1
G2
RF
1.5p
C588
ANT_SW2
ANT_SW1
ANT SW Control GSM& DCS RX Mode
Graph 2
Table 1
TEST POINT
CIRCUIT
Waveform
Select Mode
Vc(EGSM)
Vc(DCS/PCS)
EGSM-Rx
LOW
LOW
EGSM-Tx
HIGH
LOW
DCS-Rx
LOW
LOW
PCS-Rx
LOW
LOW
DCS/PCS-Tx
LOW
HIGH
Summary of Contents for KG225
Page 1: ...Date April 2006 Issue 1 0 Service Manual Model KG225 Service Manual KG225 M O B ILE CAM E R A ...
Page 3: ... 4 ...
Page 19: ...3 TECHNICAL BRIEF 20 Figure 3 4 SYSTEM INTERCONECTION OF AD6720 EXTERNAL INTERFACE ...
Page 66: ...4 TROUBLE SHOOTING 67 4 12 KEY backlight Trouble Q300 R359 TEST POINT Figure 21 ...
Page 79: ... 80 5 DOWNLOAD B Multi Download Procedure 1 Run GSM Multi Download program and select Setting ...
Page 84: ... 85 6 BLOCK DIAGRAM 6 BLOCK DIAGRAM ...
Page 85: ... 86 ...
Page 92: ... 93 KG225 8 PCB LAYOUT ...
Page 93: ... 94 KG225 8 PCB LAYOUT ...
Page 101: ... 102 10 STAND ALONE TEST Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Page 109: ... 110 ...
Page 125: ...Note ...
Page 126: ...Note ...