Samsung SGH-F480i Service Manual page 52

Flow Chart of Troubleshooting
4
P A _ V R E F 1
P A _ V C T R L
W C D M A _ T X
1
C 2 3 3
R F S 1 0 0
3
R F S 1 0 1
G
2
G G
R F N I
L 1 1 3
1
R 1 5 3
C 1 0 2
L 1 1 4
C 1 0 3
L 1 0 2
D P C S _ T X 9
P C N P | C
C 1 1 8
1 1
G S M _ T X G S M 8 5 0
C 1 4 3
R 1 0 7
3
G P E N 0 C T R L 1
F
R 1 0 8
G P E N 1 4
C T R L 2
R 1 0 9 5
G P E N 2 C T R L 3
R 1 1 0 6
G P E N 3
C T R L 4
[ A S M
C 1 0 4
G S M _ T X _ H B
1
D C S P | C
7
C 1 5 3
G S M 8 5
G S M _ T X _ L B
6
G P E N 4 T X _ E N
4
V B A T T
5
V R A M P
V B A T _ 3 8 . V
A P C _ G M S K
C 1 5 6 C 1 1 2 R 1 0 1
C 1 1 1
[ P A M
V B A T _ 3 8 . V
T A 2 0 0
C 2 7 6
V E N G N D
5 6
V M O D E 1 G N D
4 7
V M O D E 2 N | C G N D
3 8
R F N I R F O U T
2 9
V B A T T V C C
1 1 0
C 2 7 8
P A M 2 0 1
[ P A M ( U M
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V R
C 1 0 9
C 1 0 8
1 6
S _ T X P C N _ R X D C S _ R X 1
1 7
P C N _ R X D C S _ R X 2
1 8
P C S _ R X P C S _ R X 1
1 9
P C S _ R X P C S _ R X 2
1 2
E | G S M _ T X
G S M 8 5 0 _ R X
1 3
G S M 8 5 0 _ R X
1 4
E G S M _ R X G S M _ R X 1
1 5
E G S M _ R X G S M _ R X 2
E M 1 0 0
2 0
U M T S _ 2 1 0 0 _
W C D M A 2 1 0 0
2 1
W C D M A 8 5 0
2 2
W C D M A 1 9 0 0
( G S M U / M T S ] )
L 1 0 9
D
C 1 0 6 C 1 0 7
P A M 1 0 0
1 2
S _ N I
D C S P | C S _ O U T
L 1 1 2
1 0
0 9 | 0 0 _ N I
G
G S M 8 5 0 9 | 0 0 _ O U T
2
L 1 1 5 C 1 5 4
M O D E _ S E L
3
B A N D _ S E L
9
B Y P A S S _ C A P
1 3
B Y P A S S _ C A P
G
G
8
C 1 1 4
C 1 1 5
( G S M ] )
C 2 2 7
2 4 5 7 8 9
C 2 7 2
C 2 2 9
F 2 0 1
T X R
3
A N T
C 2 7 3 C 2 3 2
6
T S ] )
9-22
F _ U _ 2 8 . V _ F E M
T R X
P C S _ T X
S M _ T X
P E N 5
P E N 6
C 2 5 0
L 2 1 0
X U M S
T B A N D 1 R X
1
L 2 1 1
U M T S _ 2 1 0 0 _ T R X
C 2 5 8
C 2 5 9