4.2.5 Checking SAW Filter Circuit
- 63 -
For these 2 test case,
RX Stand alone Mode is needed
Check RF Level of
Saw Filter Input
For GSM : FL402.1
For DCS : FL402.3
Pin1: ~ -61dBm
Pin3: ~ -61dBm
Yes
Pin7: ~ -64dBm
Pin5: ~ -65dBm
Check RF Level of
Saw Filter Output
For GSM : FL402.7
For DCS : FL402.5
Saw Filter is OK
See next Page to check
Rx IQ Signal
Yes
No
Check the parts are
well Soldered
For GSM : L409
For DCS : L410
Changing
L409 for GSM
L410 for DCS
No
Check the parts are
well Soldered
For GSM : L408,C444
For DCS : L411, C450
Yes
Soldering is
OK?
No
Changing
L408, C444 for GSM
L411, C450 for DCS
Changing FL402
FL402.3
FL402.5
FL402.1
FL402.7
4. TROUBLE SHOOTING
Содержание G3100
Страница 32: ... 34 3 TECHNICAL BRIEF Figure 3 20 TX IQ Signal Figure 3 21 RX IQ Signal ...
Страница 40: ... 42 Figure 3 26 1 Voice band circuit diagram Headset Hands free kit part 1 3 TECHNICAL BRIEF ...
Страница 42: ... 44 Figure 3 27 AD6521 circuit diagram 3 TECHNICAL BRIEF ...
Страница 73: ... 75 4 3 8 Receiver RF Level Figure 4 1 Test Points of Rx Level 4 TROUBLE SHOOTING ...
Страница 74: ... 76 4 3 9 Transmitter RF Level Figure 4 2 Test Points of Tx Level 4 TROUBLE SHOOTING ...
Страница 81: ... 83 The Receiver part Circuit Diagram C203 C207 C206 4 TROUBLE SHOOTING ...
Страница 87: ... 89 R202 MIC201 R204 C204 C201 R208 R206 C208 Q203 4 TROUBLE SHOOTING ...
Страница 93: ... 95 Test SIM Connector Check J301 4 TROUBLE SHOOTING ...
Страница 97: ... 99 J201 R240 C234 L201 R241 4 TROUBLE SHOOTING U205 U203 U204 ...
Страница 101: ... 103 CN302 U203 U204 4 TROUBLE SHOOTING ...
Страница 102: ... 104 U205 4 TROUBLE SHOOTING ...
Страница 104: ...5 DISASSEMBLY INSTRUCTION 106 3 Detach the rest components as shown below Figure 5 3 Detaching the rest components ...
Страница 108: ...3 Press Start and Wait until Erase is completed 110 1 Press Start 2 Confirm completion 6 SOFTWARE DOWNLOAD ...
Страница 117: ... 119 9 PCB LAYOUT 9 1 Rear Part ...
Страница 118: ...9 2 Front Part 120 ...
Страница 124: ... 126 11 2 Standalone Test Equipment Setup GSM Test Equipment Power Supply PC JIG RS 232 Cable Phone 11 STAN ALONE TEST ...
Страница 134: ... 137 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 Exploded View ...