LG02 Printer Upgrade

This document, FCO LG02-R002 Rev B, provides instructions for upgrading all models of LG02 printers. The upgrade is required to resolve a high incidence of failures in the Power Amp PCB, which lacks sufficient current-carrying margins and shut-down capabilities. The procedure involves replacing the Power Amp PCB and updating the CPU Firmware EPROM. The document includes a quick check to determine if an upgrade is necessary, a detailed installation procedure with electrostatic discharge (ESD) precautions, and verification testing steps to ensure the printer functions correctly after the modification. It also includes diagrams of the card-cage and PCB layout to assist with the component replacement.