5. Trouble shooting
- 90 -
5.12.2 TX Troble
U203
X401
U402
U401
FL401
Test Points
Checking Flow
8960 : Test mode
190 CH, 5 level setting
190 CH, -60dBm setting
Spectrum analyzer setting
Oscilloscope setting
STAR
2. Check
VCTCXO (X401)Circuit
1. Check
PMIC RF voltage output
3. Check
Control Signal
( VC1, VC2)
5. Check
4. Check
FEM & Mobile SW
6. Check
TX
PAM Control Signal
U203
X401
Redownload SW,
U402
U401
FL401
VC2
PCS_Rx
L
L
L
H
L
H
L
L
L
PGSM_Rx
DCS/PCS_Tx
EGSM_Rx
PGSM/EGSM_Tx
DCS_Rx
VC1
L
L
L
Содержание KE 770
Страница 1: ...Service Manual Model KE770 Service Manual KE770 Date April 2007 Issue 1 0 ...
Страница 3: ... 4 ...
Страница 5: ... 6 ...
Страница 49: ...3 TECHNICAL BRIEF 50 3 15 BLUETOOTH Figure 22 BLUETOOTH Functional block diagram ...
Страница 57: ...3 TECHNICAL BRIEF 58 RF Block Diagram III 2 RF circuit ...
Страница 76: ...Check Points 5 Trouble shooting 77 ...
Страница 78: ...5 Trouble shooting 79 ...
Страница 82: ...5 Trouble shooting 83 ...
Страница 87: ...5 Trouble shooting 88 ...
Страница 100: ... 101 6 Download S W upgrade Click on the blue text to select the COM port ...
Страница 101: ...6 Download S W upgrade 102 Will change the window as below ...
Страница 103: ...6 Download S W upgrade 104 During download the screen will look something like this ...
Страница 105: ... 106 ...
Страница 111: ... 112 8 PCB LAYOUT ...
Страница 112: ... 113 8 PCB LAYOUT ...
Страница 113: ... 114 8 PCB LAYOUT ...
Страница 114: ... 115 8 PCB LAYOUT ...
Страница 115: ... 116 8 PCB LAYOUT ...
Страница 117: ...9 RF Calibration 118 9 2 3 Click SETTING Menu 9 2 4 Setup Ezlooks menu such as the following figure ...
Страница 119: ...9 RF Calibration 120 9 2 7 Select MODEL 9 2 8 Click START for RF calibration 9 2 9 RF Calibration finishes ...
Страница 121: ...10 Stand alone Test 122 4 Click Update Info for communicating Phone and Test Program ...
Страница 125: ... 126 ...
Страница 143: ...Note ...
Страница 144: ...Note ...