- 51 -
4 . TROUBLE SHOOTING
(4) Checking RX IQ
Redownload software and calibration againg
Che ck C514, C516.
Check if there is
Any Major Difference
Refer to Graph 4-4
Similar?
Yes
No
Replace U500
TEST POINT
CIRCUIT
Checking Flow
Waveform
Graph 4-4
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
Summary of Contents for B2050
Page 7: ... 6 2 PERFORMANCE 2 PERFORMANCE 2 1 H W Features ...
Page 8: ... 7 2 PERFORMANCE ...
Page 9: ... 8 2 PERFORMANCE 2 2 Technical Specification ...
Page 10: ... 9 2 PERFORMANCE ...
Page 11: ... 10 2 PERFORMANCE ...
Page 12: ... 11 2 PERFORMANCE ...
Page 13: ... 12 2 PERFORMANCE ...
Page 57: ... 56 3 Checking Ant SW Mobile SW 4 TROUBLE SHOOTING ...
Page 67: ... 66 TEST POINT 4 6 LCD Trouble 4 TROUBLE SHOOTING ...
Page 70: ... 69 4 TROUBLE SHOOTING TEST POINT 4 7 Speaker Trouble ...
Page 77: ... 76 4 TROUBLE SHOOTING 4 10 KEY backlight Trouble TEST POINT ...
Page 92: ...5 DOWNLOAD AND CALIBRATION 91 5 2 Calibration ...
Page 93: ... 92 5 DOWNLOAD AND CALIBRATION ...
Page 97: ......
Page 103: ... 102 Figure 8 1 B2050 BOTTOM SIDE PCB LAYOUT 8 PCB LAYOUT ...
Page 104: ... 103 8 PCB LAYOUT Figure 8 1 B2050 TOP SIDE PCB LAYOUT ...
Page 105: ......
Page 113: ...10 STAND ALONE TEST 112 ...
Page 117: ......
Page 119: ......
Page 132: ... 131 ...
Page 133: ... 132 ...