4. TROUBLE SHOOTING
- 57 -
Check C532,C534
Check whether Ant SW
Set as RX mode
RRefer to Table 4-2
Yes
VC1 :Low
VC2 :Low
Check SW500 Pin ANT,RF
with RF Cable connected.
Open
Yes
Change SW500
Check SW500 Pin ANT,RF
with No RF Cable Connected
Short
Yes
For these 2 test case,
No Call connection is needed
No
No
Check RF Level of
FL500.10 (for GSM) &
FL500.1(for DCS)
Ant SW & Mobile SW is OK
See next Page to check
Rx IQ Signal
Pin10 : ~ -62dBm
Pin 1 : ~ -63dBm
No
Yes
No
For this RF Level test case,
RX Stand alone Mode is needed
refer to chapter 11
Change SW500
Change the Main Board
Change FL500
Checking Flow
Table 4-2
ANT_SW1
ANT_SW2
GSM_TX
H
L
DCS_TX
L
H
RX
L
L
Summary of Contents for C3380
Page 1: ...Service Manual Model C3380 Date November 2005 Issue 1 0 Service Manual C3380 ...
Page 3: ... 4 ...
Page 83: ...4 TROUBLE SHOOTING 84 4 11 KEY backlight Trouble Test Points Figure 4 22 ...
Page 109: ...Note 110 ...
Page 116: ... 117 8 PCB LAYOUT ...
Page 117: ... 118 8 PCB LAYOUT ...
Page 125: ...10 STAND ALONE TEST 126 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Page 129: ... 130 ...
Page 131: ... 132 ...