5. Trouble shooting
- 113 -
Checking Flow
Check Pin 1, 2 of SW40
with RF Cable
1
Signal is OK ?
Replace Mobile SW
(SW401)
Yes
No
Yes
Mobile SW & FEM is OK.
Check Antenna.
Check PMB8876 (U101)
Control Signal is
No
Yes
Check Pin 20, 21, 22 of
U401?
OK?
Replace FEM (U401)
Pin 16, 17 or 14, 15
No
Yes
EGSM TX
ANT SW
ANT SW2
ANT SW
Figure 32 Mobile SW
Figure 33 FEM Control Signals
Summary of Contents for Prada KE850
Page 1: ...Date March 2007 Issue 1 0 Service Manual Model KE850 Service Manual KE850 ...
Page 3: ... 4 ...
Page 5: ... 6 ...
Page 71: ...4 PCB layout 72 Main PCB bottom Main PCB bottom placement ...
Page 115: ... 116 6 Download S W upgrade 6 Press the START button ...
Page 117: ...6 Download S W upgrade 118 KE850 KE850P40 7 V09a KE850 KE850P40 7 V09a ...
Page 127: ... 128 LGMC 8 pcb layout ...
Page 128: ... 129 LGMC 8 pcb layout ...
Page 129: ... 130 LGMC 8 pcb layout ...
Page 130: ... 131 LGMC 8 pcb layout ...
Page 131: ... 132 8 pcb layout ...
Page 132: ... 133 8 pcb layout ...
Page 133: ... 134 8 pcb layout ...
Page 134: ... 135 8 pcb layout ...
Page 135: ... 136 8 pcb layout ...
Page 136: ... 137 8 pcb layout ...
Page 137: ... 138 ...
Page 149: ... 150 ...
Page 151: ... 152 ...
Page 172: ...Note ...
Page 173: ...Note ...