4. TROUBLE SHOOTING
- 49 -
(4) Checking PAM Control Signal
U500
R502 (PAM_EN)
R503
(TX_RAMP)
27p
C505
VBAT
R500
100
C519
0.01u
0.01u
C520
27p
C506
R501
100
39p
C522
2
VCC1A
6
VCC1B
R513
1K
ENABLE
18
GND1
5
GND2
7
8
4
GSM_IN
17
VBATT
SKY77328
U500
BS
1
DCS_PCS_IN
3
PA_EN
PA_BAND
TX_RAMP
Go to Next Step
Similar?
Yes
No
Check TX_RAMP and PA_EN
Check if there is
Any Major Difference or not
Go to Next Step
Similar?
Yes
No
Go to Next Step
Similar?
Yes
No
Redownload S/W
Check TX_RAMP and PA_EN
Check if there is
Any Major Difference or not
Refer to Graph 6
TEST POINT
Waveform
Checking Flow
CIRCUIT
Graph 6
Figure 9
Содержание KG225
Страница 1: ...Date April 2006 Issue 1 0 Service Manual Model KG225 Service Manual KG225 M O B ILE CAM E R A ...
Страница 3: ... 4 ...
Страница 19: ...3 TECHNICAL BRIEF 20 Figure 3 4 SYSTEM INTERCONECTION OF AD6720 EXTERNAL INTERFACE ...
Страница 66: ...4 TROUBLE SHOOTING 67 4 12 KEY backlight Trouble Q300 R359 TEST POINT Figure 21 ...
Страница 79: ... 80 5 DOWNLOAD B Multi Download Procedure 1 Run GSM Multi Download program and select Setting ...
Страница 82: ... 83 5 DOWNLOAD 7 Check if the ADI option is set to Hermes 8 Press OK to end Configuration Select Rate ...
Страница 84: ... 85 6 BLOCK DIAGRAM 6 BLOCK DIAGRAM ...
Страница 85: ... 86 ...
Страница 92: ... 93 KG225 8 PCB LAYOUT ...
Страница 93: ... 94 KG225 8 PCB LAYOUT ...
Страница 101: ... 102 10 STAND ALONE TEST Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 109: ... 110 ...
Страница 125: ...Note ...
Страница 126: ...Note ...