4. TROUBLE SHOOTING
- 52 -
(2) Checking VCTCXO Circuit
Test Points
Checking Flow
Waveform
Circuit Diagram
Figure 4-3.
X301. 4
X301. 3
Check Pin 3.
Refer to Graph 2-1
13 MHzO.K?
No
VCTCXO Circuit is OK
See next Page to check
ANT SW & Mobile SW
Yes
Check Pin 4.
Refer to Graph 2-2
2.75V OK?
No
Yes
Changing X301
Check U101, PMIC
AD6535_AFCDAC
(1608)
VVCXO
15K
R312
13MHz
X301
1
CTL
2
GND
3
OUT
VCC
4
2.2u
C337
1000p
C335
AFC
100
R311
Graph 4-1(a)
Graph 4-1(b)
Содержание C1150
Страница 1: ...Service Manual Model C1150 Service Manual C1150 Date October 2005 Issue 1 0 ...
Страница 3: ......
Страница 94: ...5 DOWNLOAD AND CALIBRATION 95 11 Wait until Sending Block is completed 1 Wait Until Sending Block is completed ...
Страница 99: ...Note 100 ...
Страница 104: ... 105 8 PCB LAYOUT 8 PCB LAYOUT ...
Страница 105: ... 106 8 PCB LAYOUT ...
Страница 113: ...10 STAND ALONE TEST 114 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 117: ...Note 118 ...
Страница 119: ... 120 Note ...
Страница 135: ...Note 136 ...