Akai LTA-26C904 Service Manual page 27

10 S0
11 1Y3
12 1Y0
13 1Z
14 1Y1
15 1Y2
16 VCC
74HCT4052D internal block diagram:
SCART2 right audio input
PC right audio input
Right audio output
AV right audio input
HD terminal right audio input
+5V Power
26