4. TROUBLE SHOOTING
- 65 -
Check SW500. ANT, RF
with RF Cable connected.
Open
Yes
Check SW500. ANT,RF
with RF Cable disconnected
Short
Yes
No
No
Check C532,C534
Check whether Ant SW
Set as TX mode
Refer to Graph4-6
Refer to Table 4-3
Yes
Check VC1, VC2
Check RF Level of
FL500 Pin 5 (for GSM)
& Pin 3 (for DCS)
Pin5 : ~29.5dBm
Pin3 : ~26.5dBm
No
Yes
No
Change board
END
For the test,
TX Stand alone Mode is needed.
Refer to chapter 11 (PL=7 for GSM, PL=2 for DCS)
Check PAM control signal
Change SW501
Change SW501
Checking Flow
Table 4-3
ANT_SW1
ANT_SW2
GSM_TX
H
L
DCS_TX
L
H
RX
L
L
Содержание C3380
Страница 1: ...Service Manual Model C3380 Date November 2005 Issue 1 0 Service Manual C3380 ...
Страница 3: ... 4 ...
Страница 83: ...4 TROUBLE SHOOTING 84 4 11 KEY backlight Trouble Test Points Figure 4 22 ...
Страница 98: ...4 TROUBLE SHOOTING 99 Yes No Yes No Replace M201 Establish a call Replace U101 Software Re_download ...
Страница 109: ...Note 110 ...
Страница 116: ... 117 8 PCB LAYOUT ...
Страница 117: ... 118 8 PCB LAYOUT ...
Страница 125: ...10 STAND ALONE TEST 126 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 129: ... 130 ...
Страница 131: ... 132 ...