Is there anything inside we could interface to?

A project log for Hacking a Cossor (Raytheon) Husky Printer

Printers from military surplus with absolutely no documentation and an obscure interface connector... sounds like a good hacking project.

Andy PrestonAndy Preston 11/15/2019 at 16:480 Comments

The "big chip"... Possibly a custom chip just for this device. I've not found any details as yet.

The "smaller chips"... Plenty more details on these:

INTERSIL ICL7642ECPD - S8936 - Dual/Quad, Low Power CMOS Operational Amplifiers
MAXIM MAX232CPE - RS-232 --> TTL converter
74HC14N - Hex Schmitt-Trigger Inverters
74HC02N - Quad 2-input Positive-NOR gates

LA-180D 46 062028 ( )

That Maxim chip looks like a good place to tap in a serial port at either RS232 or TTL voltage.