V1-1: MAX3766EEP+ obsolete, discontinued and unavailable on the market
MAX3766EEP+ (IC19->IC24) is component is obsolete, discontinued, unavailable on the market and seems there is no alternative part.
It is a main component: "622Mbps LAN/WAN Laser Driver with Automatic Power Control and Safety Shutdown" https://www.maximintegrated.com/en/products/comms/optical-communications/MAX3766.html
Problem found when starting a production in March 2022. Component was developed in 2003 (https://www.maximintegrated.com/cn/reliability/product/MAX3766.pdf). Datasheet from 2004. Design Conv RS485 OPT RTM started in 2017.