- 70 -
4 . TROUBLE SHOOTING
CIRCUIT DIAGRAM
0
0
2
N
C
1
2
6
4
1
N
I
8
2
N
I
1
C
N
5
7
2
C
N
2
1
O
N
0
1
2
O
N
1
+
V
2
R
M
4
8
6
4
S
A
L
N
2
0
2
U
1
M
O
C
3
2
M
O
C
9
D
N
G
T
A
B
V
8
9
2
C
A
N
A
N
9
9
2
C
0
2
2
C
u
0
1
P
_
K
P
S
N
_
K
P
S
N
_
C
E
R
L
E
S
_
K
P
S
P
_
C
E
R
A
N
0
3
2
R
K
0
1
7
2
2
R
u
0
1
5
3
2
C
p
7
4
4
3
2
C
u
2
2
0
.
0
5
2
2
C
0
7
3
2
R
A
N
T
X
E
V
_
8
V
2
0
3
2
C
u
2
2
0
.
0
6
2
2
C
R242
56K
u
1
2
2
2
C
u
5
1
0
.
0
1
3
2
C
u
2
2
0
.
0
4
2
2
C
2
T
F
D
9
9
5
4
T
S
A
L
N
M
O
C
5
GND
3
1
IN
2
VCC
4
0
2
U
u
5
1
0
.
0
9
2
2
C
u
1
8
2
2
C
6
3
2
C
u
1
K
6
5
8
3
2
R
K
1
.
5
9
3
2
R
K
9
3
9
2
2
R
T
U
O
X
I
M
4
B
1
E
A
M
W
P
_
0
P
B
I
V
_
5
P
6
C
D
R
2
E
1
D
T
E
S
E
R
T
U
O
R
2
C
5
B
1
D
N
G
P
S
3
C
2
D
N
G
P
S
3
D
N
G
P
S
4
C
5
C
4
D
N
G
P
S
+
T
U
O
P
S
6
A
-
T
U
O
P
S
6
B
4
A
D
D
V
P
S
F
E
R
V
1
A
1
C
C
G
E
R
V
R
W
4
F
0
D
4
E
5
F
1
D
2
D
6
F
3
D
5
E
6
E
4
D
6
D
5
D
5
D
6
D
4
D
7
D
D
N
G
D
2
B
1
B
D
D
V
D
3
D
L
E
S
F
I
3
E
E
L
I
D
D
V
O
I
2
F
Q
R
I
2
D
2
A
T
U
O
L
N
I
X
I
M
3
A
B
H
1
7
8
2
L
M
3
0
2
U
3
B
T
U
O
A
1
F
K
C
O
L
C
3
F
S
C
K
0
2
4
2
2
R
2
3
2
C
u
0
1
9
N
W
O
D
T
U
H
S
1
D
D
V
8
1
O
V
6
2
O
V
0
1
2
S
S
A
P
Y
B
3
1
D
N
G
2
D
N
G
1
1
+
N
I
4
5
-
N
I
7
1
C
N
2
C
N
D
L
0
9
8
4
M
L
6
0
2
U
T
A
B
V
3
3
2
C
p
7
4
1
2
2
C
u
1
A
N
3
3
2
R
K
1
.
5
T
X
E
V
_
8
V
2
5
3
2
R
T
A
B
V
N
_
K
P
S
P
_
K
P
S
P
_
C
E
R
T
X
E
V
_
8
V
2
N
E
_
P
M
A
Z
H
M
3
1
T
E
S
E
R
_
I
D
I
M
_
5
1
A
T
A
D
3
1
A
T
A
D
1
1
A
T
A
D
8
0
A
T
A
D
9
0
A
T
A
D
0
1
A
T
A
D
2
1
A
T
A
D
4
1
A
T
A
D
0
0
D
D
A
S
C
_
I
D
I
M
_
Q
R
I
_
I
D
I
M
_
D
R
_
R
W
_
R
O
T
A
R
B
I
V
_
I
D
I
M
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 ...