4. TROUBLE SHOOTING
- 78 -
Checking Switch Block power source
MODE ANT_SEL0
ANT_SEL1 ANT_SEL2
GSM900 TX
HIGH
HIGH
LOW
GSM1800/1900 TX
HIGH
LOW
LOW
GSM900 RX
LOW
LOW
HIGH
GSM1800 RX
LOW
HIGH
HIGH
GSM1900 RX
LOW
HIGH
LOW
UMTS 800
HIGH
LOW
HIGH
UMTS 2100
HIGH
HIGH
HIGH
Logic Table of the Antenna Switch
Check Soldering of
ANT_SEL0, 1, 2 High Level
2.5V < Voltgae < 3.0V
Check VCC
TP1 VREG_RFRX_0_2.85V
Check the Logic
in each mode
YES
NO
Z3X-BOX.COM
Summary of Contents for L602i
Page 3: ... 4 Z 3 X B O X C O M ...
Page 46: ...3 TECHNICAL BRIEF 47 Figure PM6650 2 Functional Block Diagram Z 3 X B O X C O M ...
Page 71: ...4 TROUBLE SHOOTING 72 4 2 SIGNAL PATH WCDMA Tx PATH WCDMA Rx PATH Z 3 X B O X C O M ...
Page 83: ...4 TROUBLE SHOOTING 84 4 5 5 Check RF Rx Level TP1 TP3 TP4 Bias1 TP2 Z 3 X B O X C O M ...
Page 101: ...4 TROUBLE SHOOTING 102 LCD Control data flow Z 3 X B O X C O M ...
Page 113: ...4 TROUBLE SHOOTING 114 Z 3 X B O X C O M ...
Page 130: ...5 DOWNLOAD 131 Click on X button to use another function Z 3 X B O X C O M ...
Page 134: ...6 BLOCK DIAGRAM 135 Table 2 1 1 RF Block Component Z 3 X B O X C O M ...
Page 137: ...6 BLOCK DIAGRAM 138 Top Side Z 3 X B O X C O M ...
Page 138: ...6 BLOCK DIAGRAM 139 Bottom Side Z 3 X B O X C O M ...
Page 139: ... 140 Z 3 X B O X C O M ...
Page 149: ... 150 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 150: ... 151 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 151: ... 152 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 152: ... 153 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 153: ... 154 LGMC 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 154: ... 155 LGMC 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 155: ... 156 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 161: ... 162 Z 3 X B O X C O M ...
Page 163: ... 164 Z 3 X B O X C O M ...
Page 191: ...Note Z 3 X B O X C O M ...
Page 192: ...Note Z 3 X B O X C O M ...