- 52 -
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
Содержание B2070
Страница 54: ... 53 4 TROUBLE SHOOTING 4 2 TX Trouble TEST POINT 13Mhz OSCILLATOR Mobile SW FEM TRANCEIVER LDO PAM ...
Страница 68: ... 67 4 TROUBLE SHOOTING TEST POINT 4 6 LCD Trouble ...
Страница 72: ... 71 4 TROUBLE SHOOTING TEST POINT 4 8 Speaker Trouble ...
Страница 79: ... 78 4 TROUBLE SHOOTING 4 11 KEY backlight Trouble TEST POINT ...
Страница 96: ...6 Press Start and Pover on the phone using JIG remote Power on Switch 1 5 DOWNLOAD AND CALIBRATION 95 ...
Страница 107: ... 106 8 PCB LAYOUT Figure 8 1 B2070 BOTTOM SIDE PCB LAYOUT ...
Страница 108: ... 107 8 PCB LAYOUT Figure 8 1 B2070 TOP SIDE PCB LAYOUT ...
Страница 109: ... 108 ...
Страница 117: ...10 STAND ALONE TEST 116 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 121: ... 120 ...
Страница 123: ... 122 ...