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4. TROUBLE SHOOTING
4.2.5 Checking SAW Filter
For the test,
RX Stand alone Mode is needed.
Refer to chapter 11
Check RF Level of
Saw Filter Input
For GSM : FL401.1
FL401.1 : ~ -61dBm
Yes
FL401.3: ~ -64dBm
FL402.3: ~ -64dBm
Check RF Level of
Saw Filter Input
For GSM : FL401.3
For DCS : FL402.3
Saw Filter is OK.
See next Page to check
Rx IQ Signal.
Yes
No
Check the parts are well
Soldered
For GSM : C422
Changing
C422 for GSM
No
Check the parts are
well Soldered.
For GSM : L402,C420
For DCS : L403, C425
Yes
Soldering is
OK?
No
Changing
L402, C420 for GSM
L403, C425 for DCS
Changing FL401
for GSM, FL402
for DCS
Figure 4-7.
FL401 FL402
C428
1p
1p
C425
C423
1p
C420
1p
3
O2
4
O2
4
FL401
EFCH942MTCA7
G1
2
G2
5
IN
1
O1
FL402
EFCH1842TCA7
G1
2
G2
5
IN
1
3
O1
27p
C422
7.5nH
L403
27nH
L402
Содержание C3100
Страница 1: ...Service Manual Model C3100 Service Manual C3100 P N MMBD0033001 Date June 2004 Issue 1 0 ...
Страница 51: ...Graph 4 15 EGSM TX 50 VCX VC2 VCX VC2 4 TROUBLE SHOOTING Graph 4 14 DCS TX ...
Страница 67: ...5 DISASSEMBLY INSTRUCTION Figure 5 1 Figure 5 2 66 5 DISASSEMBLY INSTRUCTION ...
Страница 68: ... 67 5 DISASSEMBLY INSTRUCTION Figure 5 3 Figure 5 4 ...
Страница 69: ... 68 Figure 5 5 5 DISASSEMBLY INSTRUCTION ...
Страница 70: ... 69 5 DISASSEMBLY INSTRUCTION Figure 5 6 Figure 5 7 1 3 2 4 1 2 3 ...
Страница 71: ... 70 Figure 5 8 Figure 5 9 5 DISASSEMBLY INSTRUCTION 4 2 3 1 2 1 ...
Страница 72: ... 71 5 DISASSEMBLY INSTRUCTION Figure 5 10 ...
Страница 83: ... 82 7 BLOCK DIAGRAM 7 BLOCK DIAGRAM Power supply ...
Страница 90: ... 89 9 PCB LAYOUT 9 PCB LAYOUT ...
Страница 91: ... 90 9 PCB LAYOUT ...
Страница 98: ... 97 11 3 HW Test Software for Standalone Test Setup 11 STAND ALONE TEST ...
Страница 100: ... 99 Tx Stand alone Test Setting 11 STAND ALONE TEST ...
Страница 102: ... 101 Rx Stand alone Test Setting 11 STAND ALONE TEST ...
Страница 104: ... 103 12 3 Equipment Setup Figure 12 1 Equipment Setup 12 AUTO CALIBRATION ...
Страница 107: ... 106 12 AUTO CALIBRATION ...
Страница 108: ... 107 13 EXPLODED VIEW REPLACEMENT PART LIST 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 Exploded View ...
Страница 109: ... 108 13 EXPLODED VIEW REPLACEMENT PART LIST ...