- 59 -
4 . TROUBLE SHOOTING
(6) Checking TX IQt
TEST POINT
CIRCUIT
Checking Flow
Waveform
Graph 4-8
Check if there is
Any Major Difference
Refer to Graph 4-8
Similar?
Yes
No
Redownload the Software
And calibrate
Replace U500
27
XOUT
3
N
I
X
R
P
I
X
R
2
N
Q
X
R
1
RXQP
28
5
N
I
X
T
4
P
I
X
T
7
N
Q
X
T
6
P
Q
X
T
VDD2
32
XEN
DIAG2
29
GND2
GND3
30
31
GND4
0
0
5
U
5
0
2
4
I
S
p
2
2
9
1
5
C
5
8
V
2
F
R
2
3
5
C
p
0
0
0
1
8
1
5
C
u
2
2
0
.
0
6
1
5
C
p
9
3
4
1
5
C
p
9
3
N
I
P
I
N
Q
P
Q
Z
H
M
3
1
Содержание B2050
Страница 7: ... 6 2 PERFORMANCE 2 PERFORMANCE 2 1 H W Features ...
Страница 8: ... 7 2 PERFORMANCE ...
Страница 9: ... 8 2 PERFORMANCE 2 2 Technical Specification ...
Страница 10: ... 9 2 PERFORMANCE ...
Страница 11: ... 10 2 PERFORMANCE ...
Страница 12: ... 11 2 PERFORMANCE ...
Страница 13: ... 12 2 PERFORMANCE ...
Страница 53: ... 52 4 2 TX Trouble TEST POINT 13Mhz OSCILLATOR Mobile SW FEM TRANCEIVER LDO PAM 4 TROUBLE SHOOTING ...
Страница 57: ... 56 3 Checking Ant SW Mobile SW 4 TROUBLE SHOOTING ...
Страница 67: ... 66 TEST POINT 4 6 LCD Trouble 4 TROUBLE SHOOTING ...
Страница 70: ... 69 4 TROUBLE SHOOTING TEST POINT 4 7 Speaker Trouble ...
Страница 77: ... 76 4 TROUBLE SHOOTING 4 10 KEY backlight Trouble TEST POINT ...
Страница 91: ... 90 5 DOWNLOAD AND CALIBRATION 6 Press Start and Pover on the phone using JIG remote Power on Switch 1 ...
Страница 92: ...5 DOWNLOAD AND CALIBRATION 91 5 2 Calibration ...
Страница 93: ... 92 5 DOWNLOAD AND CALIBRATION ...
Страница 97: ......
Страница 103: ... 102 Figure 8 1 B2050 BOTTOM SIDE PCB LAYOUT 8 PCB LAYOUT ...
Страница 104: ... 103 8 PCB LAYOUT Figure 8 1 B2050 TOP SIDE PCB LAYOUT ...
Страница 105: ......
Страница 113: ...10 STAND ALONE TEST 112 ...
Страница 117: ......
Страница 119: ......
Страница 132: ... 131 ...
Страница 133: ... 132 ...