Service manual

GX30
5 – 25
CONFIDENTIAL
Figure 21 SCHEMATIC DIAGRAM (19/22)
A
B
C
D
E
F
G
H
123
45
6
NOTES ON SCHEMATIC DIAGRAM can be found on page 5-1.
KEY PWB-B (3/3)
RECEPTION SIGNAL
5-17 (2-B)
5-17 (2-A,B)
5-15
(2-G)
5-23
(6-D)
5-23 (6-C)
TRANSMISSION SIGNAL
KEY PWB-B (3/3)
18
12
1
5-15
(2-G)
5-17 (2-H)
5-17 (2-B)
5-15 (2-G)
5-15 (2-G)
2
34
5
6
7
G
BATT
Vcc
OUTPUT
GND
Vcont
1
2
3
4
G
TCXOEN
G
IP
G
IN
G
QP
G
QN
G
SYNTHEN
G
SYNTHCLK
G
TCXOOUT
G
SYNTHDATA
G
AFCDAC
G
BS1
G
BS2
G
BS3
NC
G
PA
NC
NC
Out
NC
GND
NC
Out
GND
GSM850
GSM900
GSM850
GSM900
1
2
3
4
5
6
7
8
9
10
VCCLNA
PCSGND
PCSLNAI
PCSLNAIB
PCSDCSGND
VCCRFSYN
DCSLNAI
DCSLNAIB
DCSGSMGND
GSMLNAI
GSMLNAIB
GSMGND
PLLOUT
VCCOPLL
VCCTXVCO
TXVCOD
TXVCODB
TXOUTG
COMMONGND
TXOUTD
TXVCOGB
TXVCOG
VCCIO
IOUT/IIN
IOUTB/IINB
QOUT/QIN
QOUTB/QINB
CPIFSYN
VCCIFSYN
S DATA
VCXOOUT
CLK
LE
VCCVCXO
VCXOB
VCXOE
GNDVCXO
CPRFSYN FLOCK VCCBB VCCRFVCO DIVON VCCRFLO CAPQB CAPQ CAPIB CAPI VCCMIX GND
1
2
3
4
5
6
7
8
9
10
11
12
131415161718192021222324
25
26
27
28
29
30
31
32
33
34
35
36
37 38 39 40 41 42 43 44 45 46 47 48 49
VDD
CE1
CE2
VOUT1
VOUT2
GND
1
2
3
4
5
6
G
BS4
NC
1
2
3
4
G
VBAT
TP802
TP801
TXOUT_
TXO
U
BATT
VTCXO
VTCXO
VRF
VRF
TX
BS1 BS2
DCS
RX
RX
TX
GSM
HIGH
TX
PCS
RX
BS3
HIGH
LOW
LOW
GSM
850
900
HIGHTX
RX
BS4
HIGH
HIGH
LOW
HIGH
HIGH
HIGH
HIGH
HIGH
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
LOW
TCX801
26MHz
VCTCXO
C832
270P(CH)
R802
4.7K
R804
10
C834 0.1
C835 0.1
R807 33
C851 0.0018
C842 0.1
FL904
MATCHING
DEVICE
IC801
HD155155NP
RF
IC804
R5322N002B
POWER SUPPLY
C836
100P(CH)
C802 2.2
C803 0.01
C806 2.2
C807 0.01
R810 1
C833
100P(CH)
R811 1
C837
0.1
C801
1
C845
0.1
R805 6.8K
R806 6.8K
C840
330P
L821 2.2nH
L822 2.2nH
R836
0
R837
0
R835
0
C831
0.0022
C841 0.0033
C850 0.015
L802 FERRITE BEADS
L803
2.7nH
L804
2.7nH
L805
1.2nH
L806
1.2nH
L
809
6
.
8
n
H
C852
0.5P(CH)
C810 1
C812 22P(CH)
C811 22P(CH)
L801 FERRITE BEADS
C830 1
C843
0.0018
C844
0.0018