Samsung SGH-V205 Service Manual page 39

20. Synthesizer Circuit Diagram
12
A
B
C
D
E
F
12
345
VOSC
C903
22N F
22 21 20 19 18 17 16
1 SD O 15
GND
2 14
PDNB
RXQP RXQP
3 GND 13
(XOUT_EN)
RXQN
RXQN
U900
4 12
IO N
RXI P RXI P
5 IO P 11
RXI N
RXIN
VOSC
23 24 6 7 8 9 10
C910
22N F
C911
100PF
CLK13M_RF
C912
10PF
C914
100PF
CLK13M_RF
GND
GND
NC
SYN_EN PDNB
SD O
SERLE SEN B
SCLK
SERCLK
SD I
SERDAT
NC
C916 C91 9 C917 C918
100PF 100PF 100PF 100PF
3456
SAMSUNG Proprietary-Contents may change without notice
13MHZ_BB
SERDAT
VRF
SERCL K
SERL E
C905
22NF
SI_EN
34 33 32
31
XOENA
1
IO N
2
IO P
3
CKN
4
CKP
U90 1
5
TXI P TXIP
6
TXI N TXIN
7
TXQP
TXQP
8
TXQN TXQN
35 36 9 10
VOSC
L90 0
3.9nH
VOSC
GND
C915
10P F
GND
VDDI
IFLO P
U902
IFLO N
VDDR
RFLO P
RFLO N
GND
VOSC
C920
22NF
MICRO STRIP LINE
SI-LA B
Changed by
user 8
6- 21
SG H- V205 Flow Chart of Troubleshoot ing and Circuit Diagrams
67
SI_EN
C904
VRF
100P F
C906
22NF
C907
47PF
GSM_PAM_IN
30 29 28 27 26
DPCS_PAM_I N
C908
33PF
VRF
24
RFOD
C909
22NF
VDD1 23
22
RFIG N
GSM_LNA_IN_N
RFIG P 21
GSM_LNA_IN_P
20
RFID N
DCS_LNA_IN_N
RFID P 19
DCS_LNA_IN_P
18
RFIP N
PCS_LNA_IN_N
RFIP P 17
PCS_LNA_IN_P
11 12 13 14 15 16
VRF
C913
22N F
Engineer
JD Yang
Drawn by
JD Yang
R&D CH K
DOC CTRL CH K
MFG ENGR CH K
Date Changed Time Changed QA CH K
2002.10.21
3:12:21 pm
7
8
A
B
C
D
E
COMPANY NAME
Address
F
City
Size
TITLE :
A3
SGH-V205
REV Drawing Numbe r
Shee to f
91 1
0. 8
8