Sharp TQ-GX30E Service Manual page 112

GX30
KEY PWB-B (3/3)
KEY PWB-B (3/3)
A
RECEPTION SIGNAL
TRANSMISSION SIGNAL
TCXOEN
5-15
B
(2-G)
VBAT
5-23
(6-D)
C
5-17 (2-A,B)
D
E
5-15
(2-G)
SYNTHCLK
5-17 (2-H)
5-15 (2-G)
5-17 (2-B)
F
G
5-15 (2-G)
H
NOTES ON SCHEMATIC DIAGRAM can be found on page 5-1.
1
Downloaded from www.Manualslib.com
5-17 (2-B)
5-23 (6-C)
IC804
18 R5322N002B
POWER SUPPLY
VRF
G
1 6
CE1 VOUT1
2 VDD GND 5
C801
3 CE2 VOUT2 4
1
G
VTCXO
G
IP
G
IN
G
QP
G
QN
C832
270P(CH)
C831
0.0022
G
SYNTHEN
G
G
TCXOOUT
G
SYNTHDATA
12
G
1
AFCDAC
R804
10
BS1 BS2
TX HIGH LOW HIGH
GSM
850
RX HIGH LOW
TX HIGH LOW HIGH
GSM
900
RX HIGH LOW
TX LOW HIGH
DCS
RX HIGH LOW
TX LOW HIGH
PCS
RX LOW LOW
G
BS1
G
BS2
G
BS3
G
BS4
2
Figure 21 SCHEMATIC DIAGRAM (19/22)
manuals search engine
CONFIDENTIAL
PA
G
BATT
BATT
G
1
2
4 3
24 23
5
25 QOUT/QIN
26
QOUTB/QINB
R802
27
4.7K VCCIFSYN
R835
28 CPIFSYN
0
29 LE
R836
30 CLK
0
C833
31 VCXOOUT
100P(CH)
32 SDATA
R837
6
NC
33 GNDVCXO
0
7
NC
34 VCXOE
35 VCXOB
36 VCCVCXO
Vcont
GND 2
OUTPUT
4
3
Vcc
C836
TCX801
100P(CH)
26MHz
37 38 39 40 41 42 43 44 45 46 47 48 49
VCTCXO
C837
0.1
BS3 BS4
C840
LOW
330P
LOW HIGH
LOW
LOW LOW
LOW LOW
LOW LOW
LOW LOW
LOW LOW
3 4
5 – 25
22 21 20 19 18 17 16 15 14 13
12
PLLOUT
GSMGND 11
GSMLNAIB 10
9
GSMLNAI
C852
DCSGSMGND 8
0.5P(CH)
IC801
DCSLNAIB 7
HD155155NP
6
DCSLNAI
RF
PCSDCSGND 5
PCSLNAIB 4
3
PCSLNAI
PCSGND 2
VCCLNA 1
C845
0.1
C844
C843
0.0018
0.0018
5
TXOUT_
TXOU
FL904
MATCHING
DEVICE
1 Out GSM850 10
NC 2 9
NC GSM850
3 8
GND GND
NC 4 7
NC GSM900
5
Out GSM900 6 1
L803
2
2.7nH
3
L804
4
2.7nH
L805
1.2nH
L806
1.2nH
6