18
18
SPP-904
QUAD COIL
SCAN
CONTROL
1st
MIXER
2nd
MIXER
LOCAL OSC
BUFFER
LOCAL
OSC
PHASE
DETECTOR
LOCK
DETECTOR
B.P.F.
FT501
RF AMP
Q501
TX AMP
Q506, 507
TX B+
SWITCH
Q502
IF AMP
Q401
TX
VCO
RX VCO
Q512
VCO
(RX SYSTEM)
PREAMP
Q402
VOLUME
CONTROL
S401
MIC AMP
Q404
STANDBY
SWITCH
Q412
AF AMP
Q405, 406
MIX
OUT
ANT2
(ANTENNA)
FT401
10.555MHz
MIX
IN
LIM
IN
MIX
OUT
16
5
LIMITER
AMP
SQUELCH
TRIGGER
WITH
HYSTERESIS
AF
AMP
VCA
SUM
AMP
MUTE
L.P.F.
L.P.F.
REG.
LIMITER
MUTE
VCA
SUM
AMP
PRE
AMP
DATA
SHAPE
DRIVE
FILTER
AMP
DE-
MODULATOR
EXP
IN
LPF1
IN
DISCRI
VOLTAGE
L402
TX
FREQUENCY
CT401
TX
POWER
RT501
SQ
SENSITIVITY
RT401
VOL
H/M/L
S401
MODULATION
SENSITIVITY
RT403
SPEAKER
OUT LEVEL
RT402
AF
OUT
B+ (+3V)
FIL
IN
SQ IN
FIL
OUT
9
LPF2
IN
LPF2
OUT
VREF
VCC
5
10
11
3
INT
OUT
10
FSK
OUT
19
PRE
IN
24
CHARGE
DETECT
Q410
LED DRIVE
Q421
12
MC401
(MIC)
SP801
(SPEAKER)
8
PD2
PROGRAM-
MABLE
DIVIDER
LATCH
SI
CPS
PLL DATA
PLL CLK
PLL EN
X402
3.579545MHz
17
15
16
46
X1
6
X0
5
47
48
18
14
13
ST.BY.
12
DATA IN 40
D408
TALK/BATT LOW
D421 – 424
(KEY BACK LIGHT)
SYSTEM CONTROLLER
IC404
2nd MIXER, LIMITER AMP, DET,
AF AMP, SQUELCH CONTROL
IC401
1st MIXER, VCO, PLL SYNTHESIZER
IC502
EXPANDER, COMPRESSOR, LIMITER
IC403
COMPARATOR
VREF
TX MUTE
B+ SWITCH
(FOR TX SYSTEM)
Q403
+3V
REGULATOR
IC405
RESET SIGNAL
GENERATOR
Q411
CHARGE
TERMINAL
11
RX MUTE 12
CONV 37
KEY LED 17
TALK LED
TALK LED
BATT B+
16
15
SC
TX B
13
RESET
2
42
CHG IN 36
+
–
VDET2
VIN1
COL1 – COL5
Y401
(BUZZER)
RINGER DRIVE
Q408
RINGER VOLUME
SWITCH
Q409
KEY MATRIX
(SHEET KEY)
S901 – S918
RING OUT 38
RING VOL 39
34 – 30
25 – 22
ROW1 – ROW4
BT901
RECHARGEABLE
BATTERY PACK
(BP-T23)
BATTERY
VOLTAGE DETECT
IC406
2
VIN2
4
5
COMPARATOR
VDET1
1
05
• SIGNAL PATH
: RX
: TX
: BELL
BATT LOW 35
BATT OFF 29
PROGRAM-
MABLE
DIVIDER
PROGRAM-
MABLE
DIVIDER
1/32, 1/33
PRESCALER
L.P.F.
D405
D403
D404
D406
D407
BATT B+
SYSTEM CONTROLLER (IC404) B+
BATT B+
TX B+ (+3V)
B+ (+3V)
B+ (+3V)
VREF B+
EXPANDER
SQ IN
RST
XIN
XOUT
TX B+
X401
10.1MHz
D503
D502
OSC
OSC
RXE
RXB
MIX
IN
DA
TA
OUT
DA
TA
EN
EXP MUTE
CONT
CMP MUTE
CONT
44 45
16
17
41
1
COMP
OUT
20
9
10
18
13
1
2
20
21
13
FT402
455kHz
3
24
PHASE
DETECTOR
VCO
(TX SYSTEM)
2 DOUBLER
TX AMP
PD1
LATCH
1/2
LATCH
1/16, 1/17
PRESCALER
OSC &
1/2 DIVIDER
PULSE
COUNTER
SHIFT
REGISTER &
LATCH
L.P.F.
TXE
TXB
7
TX
OUT
2
5
4
14
LOCK
COMPRESSOR
5-2.
BLOCK DIAGRAM – HANDSET Section –
Содержание SPP-904
Страница 1: ...MICROFILM SERVICE MANUAL CORDLESS TELEPHONE E Model SPECIFICATIONS SPP 904 ...
Страница 3: ...3 SECTION 1 GENERAL This section is extracted from instruction manual ...
Страница 4: ...4 ...
Страница 16: ...16 ...