Technics SX-PR603

CN3
CN8 CN4
CN9 CN7
DECODER
DECODER DECODER
SWITCHES
& DIODES
SWITCHES & DIODES
MKB1E MKB2F
IC102,104
SUSTAIN
CN301 CN202 CN102
CN1
DATA,SCK
Q1-5
SWITCHES & LEDS
BUFFER
LED
DRIVER
8BIT MICROCOMPUTER
SEG0-SEG8 CM0-CM4 SW0-SW7
VR2
MAIN
VOLUME
CN2
RST
CPLC
IC1
IC1
IC2 IC3
IC2,3
KF0-KF3,KS0-KS3
KB0-KB4
A/D
CONVERTER
IC204
IC206
3-5V I/F
+5D
IP101