Sanyo DC-S800, Service Manual

Page: 21 / 40

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