Sanyo DC-BM500, Service Manual

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REFERENCE
VOLTAGE
ANTIALIASING
FILTER
57kHz
BPF
(SCF)
SMOOTHING
FILTER
PLL
(57kHz)
CLOCK
RECOVERY
(1187.5Hz)
DARA
DECODER
SYNC/EC
CONTROLLER
SYNC
DETECT-1
SYNC
DETECT-2
ERROR
CORRECTION
(SOFT DECISION)
CLK(4.332mHz)
OSC/DIVIDER
RAM
(24 BLOCK DATA)
MEMORY
CONTROL
CCB
TEST
Vdda
Vssa
MPX IN
D0
CL
DI
CE
T1
T2
T3-T7
X IN X OUT
Vddd
Vssd
RDS-ID
SYNC
SYR
VREF FL OUT C IN
5 6
1
14
15
19
18
24
13 12
8
23
22
21
20
4
3
2
7
9-17
IC BLOCK DIAGRAM & DESCRIPTION
IC251 LC72722 ( Bridge Driver)
IC101 LA9241ML (Servo Signal Processor)
FSS
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
48
47
46
45
44
43
41
40
39
38
37
36
35
34
33
42
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Vcc1 LDS LDD BH1 PH1 LF2 VR REF1 Vcc2 DRF CE DAT CL CLK DEF
NC
TBC
FSC
DGND
SLI
SLC
RFS-
RFSM
CV+
CV-
SLOF
HFL
TES
TOFF
TGL
JP+
JP- SL+ SL- SLD SLEQ SPD SP- SPG
SP NC AGND
FE- FE FA- FA FD-
FD
TO
JP
TD
TD-
TA
TH
SCI
TESI
TE
TE-
TB
F
E
FIN1
FIN2
APC
RF DET
REF
VCA
I/V
BAL VCA
INTER FACE
SLC
RF Amp
TE
T.SERVO & T.LOGICK
F.SERVO & F.LOGICK
SPINDLE SERVO SLED SERVO
IC103 LA6541 (Pick-up Actuator & Motor Driver)
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
1
PRE-
DRIVE
INPUT LOGIC CIRCUIT
2
3
5
8 10 9
4
7
6
GND
IN1
OUT1
P1
VCC2 OUT2 P2
VZ
VCC
IN2
Input Output Action
Brake
Normal(Reverse)Rotary
Reverse(Normal)Rotary
Brake
IN1
0
1
0
1
IN2
0
0
1
1
OUT1
0
1
0
0
OUT2
0
0
1
0
IC132 LB1641L (Bidirectional Motor Driver)