Ic Block Diagrams - Sony CDC-R30MP Service Manual

4-14. IC BLOCK DIAGRAMS

IC351 BA5983FP (SERVO Board)
IC302 SN74AHCT
(SERVO Board)
OE
1
A 2
GND 3
IC151 SAA6579T-T (MAIN Board)
CL
16
1
QUAL
14 13 12 11 10 9
CH1 CH2
VCC
STANDBY
CH1,2,3
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
STANDBY
CH4
VCC
CH4 CH3
15 16 17 18 19 20
VCC
5
4 Y
T57 XOUT XIN
15 14 13
OSCILLATOR
QUALITY BIT
AND
GENERATOR
DIVIDER
BIPHASE
DIFFERENTIAL
SYMBOL
DECODER
DECODER
2 3
RDDA VREF MUX
8 7 6 5
21 22 23 24
IC511 PQ1CZ21H2ZP (SERVO Board)
ERROR AMP
VREF
OSCILLATOR
ON/OFF
CIRCUIT
5 4
ON/OFF V REF
VDD GND
12 11
TEST LOGIC AND OUTPUT
57kHz
RECONSTRUCTION
BANDPASS
FILTER
(8TH ORDER)
COSTAS LCOP
VARIABLE AND
FIXED DIVIDER
CLOCK REGENERATION
AND SYNC
VP1
REFERENCE
VOLTAGE
4 5 6
VDD GND
CDC-R30MP/X30MP
4 3 2 1
VCC
25 26 27 28
CONSTANT
OVERHEAT
DETECTION CIRCUIT VOLTAGE CIRCUIT
PWM AMP
Q
R
S
OVERHEAT
DETECTION CIRCUIT
3 2
GND V OUT V IN
TEST MODE
10 9
SELECTOR SWITCH
ANTI-
ALIASING
FILTER
CLOKED
COMPARATOR
7 8
CIN SCOUT
1
35