Sharp MD-R3H Service Manual page 35

CH1-OUTA
1
CH1-OUTB
2
CH1-INA
3
CH1-INB
4
TR-B 5
5V
VREG OUT 6
VOLTAGE
REGULATOR
MUTE
1 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
D. BUF
– +
+ –
D. BUF
+ –
– +
50K
+ –
– +
– + + –
+
–
SERVO/SIGNAL
CD+5V
VDD1
VSS1
1
42
DIGITAL DIGITAL
VDD GND
EFM TIMING GEN.
EFFK
40
SYNC DET.
EFM
SYCLK 3
DEMOD.
PROTECT
IREF VCO
16
PHASE DET. FREQ. DET.
LPF
18
HFD 17
HF
HF COMPARATOR
19
TLC
20
SCCK
41
SBCO
39
SCAND 5
SUBCODE DEMOD.
EMP 2
CRCF SUBCODE Q CRC
6
SUBCODE Q REGISTER
7
SBQS
ANALOG ANALOG
VDD GND
15 21 38
VDD2
CD+5V
Figure 35 BLOCK DIAGRAM (2/4)
GND
28
CH4-OUTA
27
D. BUF
CH4-OUTB
26
D. BUF
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
IC800
M65821FP
CONTROL
18K SRAM
DIGITAL AUDIO
(8BITX2400WORD)
INTERPOLATION DC-EMPHASIS
MEMORY CONTROL
MUTE CONTROL
CIRC DECODER
ERROR MONITOR
PHASE FREQ.
CONTROL CONTROL
CLV SERVO CONTROL
2/3 DET.
PWM MOD.
CLV SERVO CONTROL STATUS CONTROL
ATT CONTROL SUBCODE Q CONTROL
RESERVED RESERVED
SLP CONTROL TEST CONTROL
MCU INTERFACE
37 8 10 11 12 14
13
– 35 –
DOTX
28
INTERFACE
4FS DIGITAL
FILTER FILTER
DO1
29
DO2
DAC 30
INTERFACE
25 EST1
24 EST2
XI
26
CLOCK
GENERATOR
27
XO
CKSEL
31
X'TAL TIMING
GENERATOR
CD+5V
LRCK1
34
LRCK2
35
LRCK3
36
WDCK
33
32 DSCK
C432
23
SEL
C846
22
RESET
9 4
MD-R3H
M702
3 3
M
SLED
4 4
MOTOR
M701
5 5
M
SPINDLE
6 6
MOTOR
2 2
SW702
1 1
PICKUP IN
BI851 CNS502
GND
1 1
CD +5V
2 2
GND
3 3
CD +7V
4 4
1
DIGITAL OUT
2
GND
X801
8.46MHz