Sanyo DC-S800 Service Manual page 21

IC BLOCK DIAGRAM & DESCRIPTION
IC103 LA6541 (Pickup Actuator & CD Mechanism Motor)
Vcc Vref VIN4 VG4 Vo8
24 23 22 21 20
11k
Level BTL
Sift Driver
Level BTL
Sift Driver
11k
1 2 3 4 5
Vcc Mute VIN1 VG1 Vo1
IC211 TA8176SN (FM Front End)
5
7 8
Vcc
Vcc
MIXER
AGC 1
BY-PASS 2
AGC DET
RF IN 3
IC245 LC72121M (PLL Synthesizer)
Vssx 2
REFERENCE
XIN 1
DIVIDER
XOUT 24
SWALLOW COUNTER
FMIN
17 1/2
1/16, 1/17 4bits
12bits PROGRAMMABLE
AMIN 16
CE
3
DI 4
CCB
DATA SHIFT REGISTER LATCH
I / F
CL 5
DO 6
POWER
V
18 ON
DD
RESET
Vssd 15
7 8
BO1 BO2 BO3 BO4
IC362 TC4011BF (NAND Gate)
VDD A4 B4
14 13 12
1 2 3
A1 B1 X1
Vo7 GND Vo6 Vo5
19 18 17
Vcc
BTL
Driver
BTL
Driver
6 7 8
Vo2 GND Vo3 Vo4
9 4 6 10
IF
Buffer
Buffer Local
Amp
Buffer
BIAS
PHASE DETECTOR
CHARGE PUMP
UNLOCK
DETECTOR
DIVIDER
UNIVERSAL
COUNTER
9 10 11 14
IO1 IO2
X4 X3 B3 A3
11 10 9 8
4 5 6 7
X2 B2 A2 VSS
IC131, IC132 TA7291S (Bridge Driver)
VG3 VIN3 CD RES
16 15 14 13
11k
Level
RESET
Sift
Level
Regulator
Sift
11k
9 10 11 12
VG2 VIN2 Reg OUT Reg IN
IC231 LA1832ML (AM / FM IF Amplifier & FM-MPX)
23 2
ALC
AM AM
OSC MIX
BUFF
11
OSC
4
OSC
24
12
BUFFER
OUT LEVEL
DET
22 S-CURVE
FM FM
IF DET
1 8
IC361 BU2090F (12bit Serial Parallel Converter)
19 PD
DATA 2
20 AIN
3
CLOCK
21 AOUT
22 Vssa
4
13 IFIN
No.
Pin Name Port Name
1 VSS VSS
2 DATA D-OUT
3 CLOCK EX1-CLK Clock input
4 Q0 BEAT
5 Q1 OSC
6 Q2
7 Q3 R-MUTE
8 Q4 DECK-A/B Deck A / B control (L=B, H=A)
9 Q5
10 Q6
11 Q7
12 Q8 MOTOR
13 Q9 A-PLY-PL Dack A Play Plunger output (H=OFF,L=ON)
14 Q10 B-PLY-PL Dack B Play Plunger output (H=OFF,L=ON)
15 Q11
16 VDD VDD
- 20 -
Vcc
Vref
2
8
REG
Protective Circuit
(Heat Interception)
9 1 5
IN1
IN2 GND
21 20 7 19 3
REG
AM
RF
AMP
AGC
AM AM
IF DET FF
AM/FM
COMP
VCO
IF BUFF
TUNING
AM
DRIVE
/FM
AM
SW
FM
MUTE
10 18 6 16 12
VSS
1
12 BIT SHIFT
RESISTOR
CONTROL
CURCUIT
LATCH
OUTPUT BUFFER (OPEN DLAIN)
5 6 7 8 9 10 11 12
Function
Ground
Data input
Tape beat chancel output (L=Pos1, H=Pos.2)
Tape oscillation circuit control (L=OFF, H=ON)
Not used
Tape REC mute output (L=OFF, H=ON)
Not used
R/P Tape Rec / Play control (L=Rec, H=Play)
Not used
Tape motor output (H=OFF,L=ON)
Not used
Power supply
6 Vs
OUT1
7
3 OUT2
5 9
GND VCC
STEREO
SW
STEREO
DRIVE
FF FF
TRIG
17
PILOT
13
DET
PHASE DET
DECODER
11 15 14
VDD
16
13 14 15