Bose AV28 Manual page 66

U601, CS4955-CQ, ENCODER, VIDEO, DIG
U602, VIDEO SW, 2-IN, 3-CH, SSOP16
A O
L H
H L
U701 Truth Table
74VCHU04, INVERTER, 5V
Integrated Circuit Diagrams
U301, U802, U803 VOLT REG, 3.3V, 3.5A. SMPS
66
U603, U604, DUAL VIDEO AMP, SSOP-8