Ic Block Diagram & Description - Sanyo DC-BM300 Service Manual

IC BLOCK DIAGRAM & DESCRIPTION
IC101 LA9241ML (Servo Signal Processor)
Vcc1 LDS LDD BH1 PH1 LF2
64 63 62 61 60 59
APC
RF DET
VCA
FIN2 1
2
FIN1
I/V
3
E
BAL VCA
4
F
5
TB
TE
TE- 6
TE 7
8
TESI
T.SERVO & T.LOGICK
9
SCI
TH 10
11
TA
TD- 12
F.SERVO & F.LOGICK
13
TD
JP 14
TO 15
FD 16
17 18 19 20 21
FD- FA FA- FE FE-
IC103 MM1469XH (CD Driver)
IC211 TA8176SN ( Diode for RM Amp, MIX, OSC & AFC)
VR REF1 Vcc2 FSS DRF CE DAT CL CLK DEF
58 57 56 55 54 53 52 51 50 49
REF
INTER FACE
SLC
RF Amp
SPINDLE SERVO SLED SERVO
22 23 24 25 26 27 28 29 30 31 32
AGND NC SP SPG SP- SPD SLEQ SLD SL- SL+ JP-
28 27 26 25 24 23
D.BUF D.BUF
T.S.D
D.BUF D.BUF
1 2 3 4 5 6
Vref
RF MIX
1 2 3
RF IN
IC132 LB1641L (Bidirectional Motor Driver)
P1
3
48 NC
OUT1
2
TBC
47
46 FSC
DGND
45
SLI
44
43 SLC
IN1 5
42 RFS-
GND
1
41 RFSM
40 CV+
39 CV-
SLOF
38
Input
37 HFL
IN1 IN2 OUT1
TES
36
0 0
35 TOFF
1 0
34 TGL
33 JP+
0 1
1 1
22 21 20 19
D.BUF
Vcc
Vcc
DRIVER MUTE
D.BUF
7 8 9 10
BUFFER
REG
4 5 6 7
GND IF OUT
- 10 -
8 10 9
PRE-
DRIVE
INPUT LOGIC CIRCUIT
Output Action
OUT2
0 0 Brake
1 0 Normal(Reverse)Rotary
0 1 Reverse(Normal)Rotary
0 0 Brake
18 17 16 15
D.BUF
D.BUF
11 12 13 14
OSC
8 9
Vcc
VZ
4
7 VCC
IN2
6