Yes, Service Bulletin 7 must be incorporated into the ED-461 and/or ED-462 otherwise an additional $5000 will need to be charged.

Although not mandatory, Service Bulletin 7 addresses a common weakness and failure point in the ED-461/462 units - the High Voltage Power Supply (HVPS). SB 7 incorporates a hardware modification with a new, improved HVPS that contains a better internal connector design. In order to provide a full warranty with the ED-461/462 units, SEA incorporates SB 7 into all units sold and exchanged.

Please note that ED-461 units with serial number 2604 and above contain SB 7 in the original production of the unit. ED-462 units with serial number 4346 and above contain SB 7 as well.