Sharp MD-R3 Service Manual page 35

CH1-OUTA D. BUF
1
CH1-OUTB
2
D. BUF
CH1-INA
3
CH1-INB
4
TR-B
5
6
VREG OUT
LTAGE
GULATOR
MUTE
7
IC700
BA5914FP
FOCUS/TRACKING/
SPIN/SLIDE DRIVER
GND
8
CH2-INB
9
CH2-INA
10
CH2-OUTB
11
CH2-OUTA
12
GND
13
OP OUT
14
EFFK
SYCLK
IREF
LPF
HFD
HF
TLC
SCCK
SBCO
SCAND
EMP
CRCF
– + + –
D. BUF
D. BUF
+ –
– +
+
–
50K
+ –
– +
– + –
+
+
–
IC800
M65821FP
SERVO/SIGNAL
CD+5V
CONTROL
VDD1
VSS1
1 42
DIGITAL DIGITAL
VDD GND
18K SRAM
(8BITX2400WORD)
EFM TIMING GEN.
40
SYNC DET.
EFM
3
MEMORY CONTROL
PROTECT DEMOD.
CIRC DECODER
VCO
16
ERROR MONITOR
PHASE DET. FREQ. DET.
PHASE
18 CONTROL
CLV SERVO CONTROL
17
HF COMPARATOR
19
20
41
39
5
SUBCODE DEMOD.
CLV SERVO CONTROL
2
SUBCODE Q CRC ATT CONTROL
6
7 SUBCODE Q REGISTER RESERVED
SBQS
SLP CONTROL
ANALOG ANALOG
VDD GND
15 21 38 37
VDD2
CD+5V
Figure 35 BLOCK DIAGRAM (2/4)
GND
28
CH4-OUTA
27
CH4-OUTB
26
CH4-INA
25
CH4-INB
24
BIAS IN
23
VCC
22
VCC
POWER+7V
VCC
21
VCC
20
CH3-INB
CH3-INA
19
CH3-OUTB
18
CH3-OUTA
17
OP IN (+)
16
OP IN (–)
15
DIGITAL AUDIO
INTERFACE
INTERPOLATION
DC-EMPHASIS
MUTE CONTROL FILTER
INTERFACE
FREQ.
CONTROL
GENERATOR
2/3 DET.
PWM MOD.
X'TAL TIMING
GENERATOR
STATUS CONTROL
SUBCODE Q CONTROL
RESERVED
TEST CONTROL
MCU INTERFACE
RESET
8 10 11 12 13 14 9
– 35 –
3 3
4 4
5 5
6 6
2 2
1 1
DOTX
28
4FS DIGITAL
FILTER
DO1
29
30 DO2
DAC
25 EST1
24 EST2
XI
26
CLOCK
27
XO
X801
CKSEL
31
8.46MHz
CD+5V
LRCK1
34
LRCK2
35
36 LRCK3
WDCK
33
32 DSCK
C432
SEL 23
C846
22
4
MD-R3
M702
M
SLED
MOTOR
M701
M
SPINDLE
MOTOR
SW702
PICKUP IN
BI851 CNS502
GND
1 1
CD +5V
2
2
GND
3
3
CD +7V
4 4
1
DIGITAL OUT
2
GND