4. TROUBLE SHOOTING
- 58 -
Check C439,C440
Check whether FEM
Set as RX mode
Refer to Table 4-2
Yes
VC_EGSM :Low
VC_DCSPCS :Low
Check SW400 Pin ANT,RF
with RF Cable connected.
Open
Yes
Changing SW400
Check SW400 Pin ANT,RF
with No RF Cable Connected
Short
Yes
Changing SW400
For these 2 test case,
No Call connection is needed
No
No
Changing the Board.
Check RF Level of
FL400
FEM & Mobile SW is OK
See next Page to check
Rx IQ Signal
Pin10,11 : ~ -62dBm
Pin 12,13 : ~ -63dBm
No
Changing FL400
Yes
No
For this RF Level test case,
RX Stand alone Mode is needed
Pin 14,15 : ~ -63dBm
Checking Flow
Table 4-2
Select Mode
Vc(EGSM)
Vc(DCS/PCS)
EGSM-Rx
Low
Low
EGSM-Tx
High
Low
DCS-Rx
Low
Low
PCS-Rx
Low
Low
DCS/PCS-Tx
Low
High
Содержание KG320
Страница 1: ...Date May 2006 Issue 1 0 Service Manual Model KG320 Service Manual KG320 ...
Страница 3: ... 4 ...
Страница 20: ...3 TECHNICAL BRIEF 21 Figure 3 5 SKY77328 FUNCTIONAL BLOCK DIAGRAM ...
Страница 39: ...3 TECHNICAL BRIEF 40 3 7 CAMERA IC AIT811T U103 Figure 3 18 AIT811T APPLICATION BLOCKDIAGRAM ...
Страница 41: ...3 TECHNICAL BRIEF 42 3 8 MIDI IC YMU787 U202 Figure 3 20 YMU787 BLOCKDIAGRAM ...
Страница 59: ...4 2 TX Trouble 4 TROUBLE SHOOTING 60 SKY7477328 FEM 26Mhz OSCILLATOR SI4210 TEST POINT Figure 4 2 ...
Страница 72: ...4 TROUBLE SHOOTING 73 4 6 LCD Trouble AIT811T EMI FILTER CN102 TEST POINT Figure 4 6 ...
Страница 77: ...4 TROUBLE SHOOTING 78 Graph 4 10 a BLUE RST Graph 4 10 b DEBUG_TX RX Graph 4 10 c PCM_SYNCS TX RX USC0 ...
Страница 90: ...4 TROUBLE SHOOTING 91 4 14 Camera and Flash Trouble Camera Module U201 CN202 Figure 4 17 ...
Страница 99: ... 100 ...
Страница 107: ... 108 8 PCB LAYOUT ...
Страница 108: ... 109 8 PCB LAYOUT ...
Страница 109: ... 110 8 PCB LAYOUT ...
Страница 110: ... 111 8 PCB LAYOUT ...
Страница 111: ... 112 8 PCB LAYOUT ...
Страница 112: ... 113 8 PCB LAYOUT ...
Страница 113: ... 114 ...
Страница 121: ...10 STAND ALONE TEST 122 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
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Страница 147: ...Note ...
Страница 148: ...Note ...