4. TROUBLE SHOOTING
- 62 -
(5) Checking TX IQ
U505
C519
C526
39p
C519
28
5
TXIN
4
TXIP
7
TXQN
6
TXQP
VDD2
32
26
XEN
27
XOUT
GND4
3
RXIN
RXIP
2
RXQN
1
RXQP
U505
SI4205
DIAG2
25
29
GND2
GND3
30
31
1000p
C516
39p
C526
IP
QP
QN
26MHz
IN
Redownload the Software
And calibrate
Check if there is
Any Major Difference
Refer to Graph 4 - 8
Similar?
Yes
No
Replace U102
Test Points
Waveform
Circuit Diagram
Checking Flow
Figure 4-12
Graph 4-7
Содержание C2100
Страница 1: ...Service Manual Model C2100 Service Manual C2100 P N MMBD0048201 Date April 2005 Issue 1 0 ...
Страница 54: ...4 TROUBLE SHOOTING 55 4 2 TX Trouble SW500 U503 X500 FL500 U501 U505 5 4 1 3 2 Test Points Figure 4 7 ...
Страница 70: ...4 TROUBLE SHOOTING 71 4 7 MIC Trouble Soldering Check U203 C225 C224 C230 Test Points Figure 4 18 ...
Страница 76: ...4 TROUBLE SHOOTING 77 4 10 KEY backlight Trouble Test Points Figure 4 21 ...
Страница 104: ... 105 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: ......
Страница 135: ......