4. Troubleshooting
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PA module (U600)
Test point part
Function
Typical value
Description
U600, pin1
DPCS_IN
DCS PCS RF input
U600, pin2
BS
2.8V
Band select logic input
U600, pin3
TXEN
2.8V
TX enable logic input
U600, pin4
VBAT
3.8V(3.4~4.2V)
Battery supply connection
U600, pin5
CEXT
by pass
U600, pin6
VRAMP
Analog signal used to control the output power
U600, pin7
EGSM_IN
EGSM RF input
U600, pin10
EGSM_OUT
EGSM RF output
U600, pin16
DPCS_OUT
DCS, PCS RF output
Содержание KG300
Страница 3: ... 4 ...
Страница 11: ...2 Software Download Procedure 12 Select default folder Press Install ...
Страница 12: ...2 Software Download Procedure 13 Press Finish Enable Leo Download tool ...
Страница 19: ...3 Assembly and Disassembly 20 v Take off the Main Board from B Cover Receiver Keypad ...
Страница 53: ...4 Troubleshooting 54 7312 RF Placement PX Path TX Path ...
Страница 57: ...4 Troubleshooting 58 RF transceiver U602 ...
Страница 61: ...4 Troubleshooting 62 U602 U601 J601 ...
Страница 62: ...5 Circuit Diagrams 63 SYSTEM BLOCK DIAGRAM 5 CIRCUIT DIAGRAMS ...
Страница 67: ... 68 ...
Страница 76: ... 77 6 PCB LAYOUT ...
Страница 77: ... 78 6 PCB LAYOUT ...
Страница 79: ... 80 ...
Страница 84: ...Note ...
Страница 85: ...Note ...