(5) Checking TX IQ
4. TROUBLE SHOOTING
- 50 -
U501
C523
C526
39p
C523
8
XOUT
BQN
5
BQP
6
BIN
7
BIP
39p
C526
R514
NA
26M_DBB
IN
IP
QN
QP
Redownload the Software
And calibrate
Check if there is
Any Major Difference
Refer to Graph7
Similar?
Yes
No
Replace U101
TEST POINT
CIRCUIT
Checking Flow
Waveform
Graph 7
Figure 10
Summary of Contents for KG225
Page 1: ...Date April 2006 Issue 1 0 Service Manual Model KG225 Service Manual KG225 M O B ILE CAM E R A ...
Page 3: ... 4 ...
Page 19: ...3 TECHNICAL BRIEF 20 Figure 3 4 SYSTEM INTERCONECTION OF AD6720 EXTERNAL INTERFACE ...
Page 66: ...4 TROUBLE SHOOTING 67 4 12 KEY backlight Trouble Q300 R359 TEST POINT Figure 21 ...
Page 79: ... 80 5 DOWNLOAD B Multi Download Procedure 1 Run GSM Multi Download program and select Setting ...
Page 84: ... 85 6 BLOCK DIAGRAM 6 BLOCK DIAGRAM ...
Page 85: ... 86 ...
Page 92: ... 93 KG225 8 PCB LAYOUT ...
Page 93: ... 94 KG225 8 PCB LAYOUT ...
Page 101: ... 102 10 STAND ALONE TEST Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Page 109: ... 110 ...
Page 125: ...Note ...
Page 126: ...Note ...