Important Checks before Inserting a Maintenance Cartridge in HP Latex 700/800

There have been an increase of cases reported due to crashes between the misplaced or deformed flags in the Maintenance Cartridge  and the Optical Sensor located in the Service Station. HP has sent out a Newsletter HERE that discusses the issue and solution in detail. 

HP is also adding a prompt to firmware to alert customers to check and newer units are going to have a guard to prevent the customer from breaking the flag. HP is also working on a shipping solution to help prevent breakage during transit.