TU81 Transport Backup Errors

This document outlines the rework procedure for FCO TU81-R005, which addresses the following VMS backup errors on TU81 transports (Rev C1 and below): - BACKUP-E-BLOCKLOST - BACKUP-I-HDRCRC - BACKUP-I-XOERRS

The procedure requires a technician to replace three ROMs (at locations G3, G7, and G9) on the TMSCP module with updated parts (77025244, 77025234, and 77025224, respectively). It also includes steps for verifying the fix via operator tests and updating the revision tag on the drive to "D1". The installation is estimated to take 0.75 hours.