Paper Tape Reader/Punch

This Engineering Change Order (ECO) log for the PC05 Paper Tape Reader/Punch documents three specific updates: 1. A redesign of the punch motor driver assembly from an SCR driver to a Triac driver. 2. A shift from an aluminum bezel to a plastic bezel using ultrasonic welding. 3. The replacement of a 4-amp fast-blow fuse with a 4-amp slow-blow fuse on the power regulator to prevent potential blowing during power cycles, alongside an update to the Illustrated Parts Breakdown (IPB).