Sony HCD-GR8 - IC901 LA5617 (MAIN BOARD); IC1502 LB1641(MAIN BOARD); IC401 MSM6653 A-485 RS (DJ BOARD)

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IC901 LA5617 (MAIN BOARD)
ON/OFF
CURRENT
LIMITER
START
CIRCUIT
VREF
OVER HEAT
PROTECT
ON/OFF
CURRENT
LIMITER
1
2 3
4
5 6 7 8 9 10
VCC
VMUTE VCC
VREF
ERROR
AMP
VREF
ERROR
AMP
VO1 VCC CN1
EN
EN DISPLAY
GND
NC
CN2
VEE
VO2
~_
1.8V
~_
140uA
COMPARATER
IC1502 LB1641(MAIN BOARD)
1
2 3
4
5 6 7 8 9 10
GND
MOTOR
DRIVE
NOISE
FILTER
CLAMP
FWD.IN
REV.IN
VCC 1 VCC 2
NOISE
FILTER
MOTOR
DRIVE
MOTOR
DRIVE
MOTOR
DRIVE
T.S.D O.C.P
FWD/REV/STOP
CONTROL LOGIC
IC401 MSM6653A-485RS (DJ BOARD)
1
7
8
16
15
14
13
12
11
ADDRESS &
COMMAND
CONTROLLER
544KBIT ROM
(EDITING ROM &
ADDRESS ROM
CONTAINS 22KBIT)
I/O
INTERFACE
ADPCM
SYNTHESIZER
PCM
SYNTHESIZER
12BIT DAC
LPF
17BIT
MULTIPLEXER
DATA
CONTROLLER
17BIT
ADDRESS
COUNTER
MELODY
GENERATOR
BEEP TONE
GENERATOR
TIMING
CONTROLLER
OSC
17
18
19
20
2
3
4
5
6
9
10
8
7
12
VPP
I4
I5/SI
I6/SD
CH
RESET
BUSY
NAR
AOUT
GND
VDD
XT
XT
CMD
ST
I0
I1
I2/PORT0
I3/PORT1
PGM