Block Diagrams
4-2
4-2 Main RF
IF SA
W
Filter
(225MHz)
LC
Filter
(45MHz)
Dual Power
AMP
Module
(U608)
SI4133-MLP28
(U612)
VCTCXO
13MHz
(U613)
HD155128TF
(U605)
IF VCO
1080MHz
925~960MHz
Ant. S/W
(U602)
Dual
SA
W
Filter
(U604)
1805~1880MHz
Dual
SA
W
filter
LNA
LNA
PLL1
PLL2
PGA
90 ¡
Shift
v
2
90MHz
v
6
90 ¡
Shift
v
2
DCS : 270MHz
GSM : 540MHz
I&Q
Mod.
GSM : 270MHz
DCS : 135MHz
Phase
Detector
Loop
filter
GSM : 270MHz
DCS : 135MHz
VP40575
(U501)
880 ~ 915MHz
1710 ~ 1785 MHz
Tx Dual VCO
(U610)
Mixer 2
Serial data
interface
45MHz
270MHz
v
2
GSM : 1
150~1
185MHz
DCS : 1580~1655MHz
IRXP
IRXN
QRXP
QRXN
I&Q Demo.
SCLK
S
D
ATA
AGC_EN
bias circuit
Mixer 1
RF VCO
v
2
540MHz
GSM : 1
150~1
185MHz
DCS : 1575~1650MHz
(CH 62 : 947.4MHz)
(CH 698 : 1842.4MHz)
(CH 62 : 902.4MHz)
(CH 698 : 1747.4MHz)
CH 62 : 1
172.4MHz
CH 698 : 1617.4MHz
IRXP
IRXN
QRXP
QRXN
U634
U601
C630, L612
APC IC
(U61
1)
Coupler
(U609)
Coupler
(U607)
SGH-N620
RF
Block
Diagram
Ant. S/W
(U602)
Содержание SGH-N625
Страница 2: ...Samsung Electronics Co Ltd Printed in Korea 08 2002 Rev 1 0 GH68 03123A ELECTRONICS ...
Страница 9: ...PCB Diagrams 2 1 2 PCB Diagrams 2 1 Main Top ...
Страница 10: ...PCB Diagrams 2 2 2 2 Main Bottom ...
Страница 27: ...5 Flow chart of trouble shooting 5 1 Power ON 5 1 Flow chart of trouble shooting ...
Страница 30: ...Flow chart of trouble shooting 5 4 VCC VCC R509 C526 SIMPWDN_BOOT F_WP SYSRST GPIO3 DTR1 F ...
Страница 35: ...5 9 Flow chart of trouble shooting 5 5 Microphone Part ...
Страница 36: ...Flow chart of trouble shooting 5 10 C532 U501 R525 R527 C561 C560 MIC VX 1P C553 R530 VX 1N R531 C538 VCC ...
Страница 43: ...5 17 Flow chart of trouble shooting R215 1K 100K R217 1 3 2 Q201 MMBT2222AWT1 BACKLIGHT B_LIGHT ...
Страница 44: ...Flow chart of trouble shooting 5 18 5 10 Melody Part ...