Sharp GX30 Service Manual page 112

KEY PWB-B (3/3)
KEY PWB-B (3/3)
A
RECEPTION SIGNAL
TRANSMISSION SIGNAL
IC804
18
R5322N002B
POWER SUPPLY
TCXOEN
5-15
G
1
B
(2-G)
2 VDD
C801
3
1
VBAT
5-23
G
(6-D)
C
G
IP
G
IN
5-17 (2-A,B)
D
G
QP
G
QN
E
G
5-15
SYNTHEN
(2-G) G
SYNTHCLK
G
5-17 (2-H) TCXOOUT
G
5-15 (2-G)
SYNTHDATA
G
5-17 (2-B)
F AFCDAC
G
G
BS1
G
BS2
5-15 (2-G)
G
BS3
G
BS4
H
NOTES ON SCHEMATIC DIAGRAM can be found on page 5-1.
1
PA
G
5-17 (2-B)
BATT
G
5-23 (6-C)
VRF
CE1 VOUT1 6
GND 5
CE2
VOUT2 4
VTCXO
C832
270P(CH)
C831
R802
0.0022
4.7K
C833
100P(CH)
R837
12
0
Vcont
1 GND 2
R804
OUTPUT
4 3
10 Vcc
TCX801
26MHz
VCTCXO
BS1 BS2 BS3 BS4
TX HIGH LOW HIGH LOW
GSM
850
RX HIGH LOW LOW HIGH
TX HIGH LOW HIGH LOW
GSM
900
RX HIGH LOW LOW LOW
TX LOW HIGH LOW LOW
DCS
RX HIGH LOW LOW LOW
TX LOW HIGH LOW LOW
PCS
RX LOW LOW LOW LOW
2 3
BATT
1
2
4 3
24 23 22 21 20 19
5
25 QOUT/QIN
26 QOUTB/QINB
27 VCCIFSYN
R835
28
CPIFSYN
0
29 LE
R836
IC801
30
CLK
0
HD155155NP
31 VCXOOUT
RF
32 SDATA
6
NC
33 GNDVCXO
7
NC
34 VCXOE
35 VCXOB
36 VCCVCXO
C836
100P(CH)
37 38 39 40 41 42 43 44 45 46 47 48 49
C837
0.1
C840
330P
4
18 17 16 15 14 13
1
12 NC 2
PLLOUT
GSMGND 11 3
NC 4
GSMLNAIB 10
5
GSMLNAI 9
C852
DCSGSMGND 8
0.5P(CH)
DCSLNAIB 7
L804
DCSLNAI 6
2.7nH
PCSDCSGND 5
4
PCSLNAIB
L806
PCSLNAI 3
1.2nH
PCSGND 2
VCCLNA 1
C845
0.1
C843 C844
0.0018 0.0018
5
TXOUT_
TXOU
FL904
MATCHING
DEVICE
10
Out GSM850
9
NC GSM850
8
GND
GND
7
GSM900
NC
Out GSM900 6 1
L803
2
2.7nH
3
4
L805
1.2nH
6