4. TROUBLE SHOOTING
- 48 -
RX Trouble
(1) Checking VCTCXO Circuit
U400
SW400
U102
FL400
X101
FL401
Is the waveform
of Pin3 similar to
DCXO(X101)
Waveform?
Replace
X101
Yes
No
DCXO Circuit is OK.
See next page to check
PLL Circuit.
( NX3225SA(W-188-34-7)
2
GND1
GND2
4
1
HOT1
HOT2
3
NX3225SA
X101
26MHz
2V8_VIO
NA
R107
TEST POINT
CIRCUIT
Waveform
Pin 2
Pin 1
Waveform
CHECKING FLOW
Содержание KG270
Страница 1: ...Date April 2007 Issue 1 0 Service Manual Model KG270 MG160 Service Manual KG270 MG160 ...
Страница 3: ... 4 ...
Страница 81: ...5 DOWNLOAD 82 5 DOWNLOAD 5 1 Download Setup Configure system like figure 5 1 Figure 9 1 Download Setup ...
Страница 87: ... 88 6 BLOCK DIAGRAM 6 BLOCK DIAGRAM ...
Страница 92: ... 93 8 PCB LAYOUT ...
Страница 93: ... 94 8 PCB LAYOUT ...
Страница 104: ... 105 10 CALIBRATION 10 2 3 Click SETTING Memu 10 2 4 Setup Ezlooks menu such as the following fugure KG278 ...
Страница 106: ...10 CALIBRATION 107 10 2 7 Select MODEL 10 2 8 Click START for RF calibration 10 2 9 RF Calibration finish KG278 ...
Страница 107: ...10 CALIBRATION 108 10 2 10 Calibration data will be saved to the following folder ...
Страница 113: ... 114 ...
Страница 124: ...Note ...
Страница 125: ...Note ...