SPP-Q123
– 15 –
– 16 –
5-1. BLOCK DIAGRAMS
– BASE UNIT SECTION –
SECTION 5
DIAGRAMS
• Signal path.
: RX(From Tel Line)
: TX(To Tel Line)
:bell
22
7
6
3
2
1
5
20
30
16
19
4
10
9
RF
AMP
Q1
RF
AMP
Q51
TX B+
SWITCH
Q54
VOLTAGE
DET
IC301
BATTERY
SWITCH
Q701
SWITCH
CONTROL
Q702
CHARGE
DET
Q401
CHARGE
LIM
Q403
CHARGE
REG
Q402
REG
Q301
CHARGE
CIRCUIT
RESET
Q302
1st
MIX
2nd
MIX
DET
DATA
COMP
RSSI
LPF
IF
AMP
IF
IN
EXPANDER
PX
PLL
40
44
36
38
34
32
28
27
15
17
18
20
19
14
11
24
RX
PLL
46
42
TX
PLL
TX VCO
L52
Q52
1
22
47
23
LOCAL
OSC
4
3
X101
10.22MHz
X501
4.048MHz
43
9
6
7
8
5
10
LIMITER
AF
AMP
Q202
RELAY
DRIVE
Q201
COMPRESSOR
DATA LATCH
CONTROL
D401
CHARGE
2
3
ANT 1
TELESCOPIC
ANTENNA
BPF1
BPF
BPF51
BPF
BPF2
BPF
46.0MHz
49.0MHz
CF102
10.68MHz
CF101
460kHz
AMP
AF
OUT
COMP IN
L01
L02
RF
IN
MIX
IN
MIX
OUT
MIX
OUT
CONTR
TVCOIN
D COMP OUT
PD
OUT
PD
OUT
RV101
RSSI H
MODULATION
D51
PRE
AMP
PRE
IN
MUTE
EXP
OUT
EXPANDER
IC101(2/3)
FIL
OUT
LPF
CLK
DATA
STB
AMP
COMPRESSOR
IC101(3/3)
CHARGE
TERMINAL
B+
(+5.2V)
B+
(+9V)
B+
(+5.2V)
B+(+5V)
TX B+ CTRL
14
POW DET
12
18
RESET
SYSTEM
CONTROL
IC501
CHG DET
RSSI
RX
DATA
TX DATA
CLK
DATA
STB
SIG IN
DP
RING
PAGE
17
DIAL MODE
H - MUTE
L101
LOCAL
OSC
OSC1
OSC2
MUTE
COMP
OUT
BATTERY
MJ201
LINE
DC IN 9V
J301
S301
PAGE
S302
DIAL MODE
P
T
RING
DET
PH201
T201
RY201
FL101
DET
MIX,IF AMP,DET
IC101(1/3)
SIGOUT
