4-3
Block Diagrams
4-2-1 RF Transmit Part
a
b
c
d
e
U305
HD155128TF
Antenna
S/W
U602
U108
VP40575
TXEN
RAMPD
A
C
BAND Selection
- GSM :
Lo
w
- DCS :
High
ITXP
ITXN
QTXP
QTXN
Loop
Filter
TX VCO
U610
Dual P
A
M
U312
APC Circuit
890
~
915
MHz
1710
~
1785
MHz
Coupler
15
3
1
3
7
5
U318
U318
8
8
13
7
2
540 MHz
PCN :
1575 ~ 1650 MHz (Tx)
GSM :
1150 ~ 1185 MHz
41
4
1
1
4
5
38
35
20
19
18
17
30
47
10
6
8
1
4
2
5
2
1
Ant.
S/W
Control
Circuit
3VTX
TXEN2
VC1
VC2
VC3
VC3
VC2
VC1
GSM(Tx)
DCS(Tx)
Rx
H
H
H
L
L
L
L
LL
11
SI4133-MLP28
U302
VCTCXO
13MHz
U303
IF VCO
1080MHz
PLL1
PLL2
RF VCO
AFCD
A
C
10
23
15
3
2
1
Содержание SGH-A200
Страница 2: ...Samsung Electronics Co Ltd Printed in Korea 03 2001 Rev 1 0 GH68 01895A ELECTRONICS ...
Страница 12: ...Exploded Views and Parts List 1 9 1 10 Battery Charger BATTERY CHAGER GH44 00177A ...
Страница 13: ...PCB Diagrams 2 1 2 PCB Diagrams 2 1 Main Top ...
Страница 14: ...PCB Diagrams 2 2 2 1 1 Main RF Top ...
Страница 15: ...PCB Diagrams 2 3 2 1 2 Main Base Band Top ...
Страница 16: ...PCB Diagrams 2 4 2 2 Main Bottom ...
Страница 17: ...2 5 PCB Diagrams 2 2 1 Main RF Bottom ...
Страница 18: ...PCB Diagrams 2 6 2 2 2 Main Base Band Bottom ...
Страница 46: ...Flow chart of trouble shooting and Circuit Diagram 5 16 RI_LIGHT R706 Q101 3 CN503 KPCB A SSY ...