4. TROUBLE SHOOTING
- 64 -
Check SW400.ANT, RF with RF
Cable connected.
Open
Yes
Changing SW400
Check SW400.ANT,RF
with RF Cable disconnected
Short
Yes
Changing SW400
No
No
Check C439,C440
Check whether FEM
Set as TX mode
Rrefer to Graph4-6(a), 4-6(b)
Rrefer to Table 4-3
Yes
Check VC1, VC2, VC3
Check RF Level of
FL400 PIN 8(for GSM) & Pin 5 (for
DCS)
Pin10 : ~32.5dBm
Pin 8 : ~29.5dBm
No
Yes
No
Changing board
Go to 4.3.5 Checking PAM
control signal
END
For the test,
TX Stand alone Mode is needed. (PL=5 for
GSM, PL=0 for DCS)
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 ...
Страница 127: ... 128 ...
Страница 129: ... 130 ...
Страница 147: ...Note ...
Страница 148: ...Note ...