Ic Block Diagrams - Sony SCT-ID10 Service Manual

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IC BLOCK DIAGRAMS

IC101 BA6566
18 17
VL
AGC
POWER
DISSIPATION
1 2
IC201 BA8206
VCC
1
AMP
POWER
SUPPLY
RSL 2
WITH
HYSTERISIS
LFI 3
LOW
HIGH
FREQ.
FREQ.
OSC
OSC
LFO 4
r CIRCUIT BOARDS LOCATION
D1
16 15 14
VB
MIC
10k 10k
10k
PRE
VB
DTMF
PRE
LINE
CURRENT
SENSE
3 4 5
IC301 MT88E43ASR
IN+ 1
+
–
IN– 2
8 OUT
GS 3
HFI
7
INTERNAL
BIAS
4
VREF
GENERATOR
6 HFO
5
CAP
5 GND
TRIGIN 6
TRIGRC 7
TRIGOUT
8
MODE 9
10
OSCIN
OSCILLATOR
OSCOUT 11
12
VSS
MAIN board
– 23 –
13 12
10k
MUTE
INTERFACE
RCV
PRE
10k
LINE CONTROL
VB
VREG
6 7
ALERT SIGNAL
ANTI-ALIAS
HIGH TONE
FILTER
FILTER
TO
ALERT SIGNAL
LOW TONE
CCT
FILTER
FSK
BANDPASS
FILTER
TO
INTERNAL
CCT
MICROCOMPUTER board
TRANSFORMER board
BATTERY BLIND board
11 10
VB VB
10k 10k
AT
10k
PRE
AGC
POW
8 9
TONE GUARD
DETECTION TIME
ALGORITHM
INTERRUPT
GENERATOR
CARRIER
DETECTOR
FSK DATA
DEMODUL- TIMING
ATOR RECOVERY
TRANSFORMER RETAINER board
24 VDD
23 ST/GT
22 EST
21 STD
20 INT
19 CD
18 DR
DATA
17
16 DCLK
FSKEN
15
14
PWDN
13 IC