4. TROUBLE SHOOTING
- 60 -
Check SW500.ANT, RF with RF
Cable connected.
Open
Yes
Changing SW501
Check SW500.ANT,RF
with RF Cable disconnected
Short
Yes
Changing SW501
No
No
Check C531,C537
Check whether Ant SW
Set as TX mode
Refer to Graph4-6
Refer to Table 6-11
Yes
Check VC1, VC2
Check RF Level of
FL500 Pin 5 (for GSM) & Pin 3 (for
DCS)
Pin5 : ~29.5dBm
Pin 3 : ~26.5dBm
No
Yes
No
Changing board
Go to 4.3.5 Checking PAM
control signal
END
For the test,
TX Stand alone Mode is needed. Refer to
chapter 11 (PL=7 for GSM, PL=2 for DCS)
VC1
VC2
0
0
ANT SW
DCS TX
EGSM TX
EGSM, DCS RX
0
1
0
1
Checking Flow
Table 4-3
Summary of Contents for C2100
Page 1: ...Service Manual Model C2100 Service Manual C2100 P N MMBD0048201 Date April 2005 Issue 1 0 ...
Page 76: ...4 TROUBLE SHOOTING 77 4 10 KEY backlight Trouble Test Points Figure 4 21 ...
Page 104: ... 105 8 PCB LAYOUT ...
Page 105: ... 106 8 PCB LAYOUT ...
Page 113: ...10 STAND ALONE TEST 114 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Page 117: ...Note 118 ...
Page 119: ......
Page 135: ......