4. TROBULE SHOOTING
- 42 -
4.2.5 Checking SAW Filter
FL401 FL402
Figure 4-7
For the test,
RX Stand alone Mode is needed.
Refer to chapter11
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, C420for GSM
L403, C425for DCS
Changing FL401
for GSM, FL402
for DCS
G1 O1
G2 O2
IN
FL401
G1 O1
G2 O2
IN
FL401
GPO 11
C422
27P
2 3
5 4
2 3
5 4
EFCH942MTCA7
EFCH1842MTCA7
L402
27nH
L403
7.5nH
C420
1p
C425
1p
C423
1p
C426
1p
Summary of Contents for G1610
Page 1: ...Service Manual Model G1610 Service Manual G1610 P N MMBD0045701 Date February 2005 Issue 1 0 ...
Page 52: ...4 TROUBLE SHOOTING 51 Graph 4 14DCS TX Graph 4 15EGSM TX VC1 VC2 VC1 VC2 VC1 VC2 VC1 VC2 ...
Page 70: ...5 DISASSEMBLY INSTRUCTION 69 5 DISASSEMBLY INSTRUCTION Figure 5 1 Figure 5 2 ...
Page 71: ...5 DISASSEMBLY INSTRUCTION 70 Figure 5 3 Figure 5 4 ...
Page 72: ...5 DISASSEMBLY INSTRUCTION 71 Figure 5 5 ...
Page 73: ...5 DISASSEMBLY INSTRUCTION 72 Figure 5 6 1 3 2 4 Figure 5 7 1 2 3 ...
Page 74: ...5 DISASSEMBLY INSTRUCTION 73 Figure 5 8 4 2 3 1 2 1 Figure 5 9 ...
Page 75: ...5 DISASSEMBLY INSTRUCTION 74 Figure 5 10 ...
Page 86: ...7 BLOCK DIAGRAM 85 7 BLOCK DIAGRAM Power supply ...
Page 87: ... 86 ...
Page 108: ...12 AUTO CALIBRATION 107 12 3 Equipment Setup Figure 12 1 Equipment Setup ...
Page 111: ...12 AUTO CALIBRATION 110 ...