Bose BUILT-INvisible TA-1 Service Manual page 61

INTEGRATED CIRCUIT DIAGRAMS
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Bose P/N: 253903-32, Microprocessor, Bose P/N: 256483, Analog MUX, DG409CY,
TMP87PH47U Pinout Diagram
Bose P/N: 256483, Analog MUX, DG409CY, Schematic Diagram
Bose P/N: 261421, AND Gate, SN74ACH1G08 Bose P/N: 261417, RS-232 Transceiver,
MAX202CSE
61