Tektronix Digital Video Switcher User Manual

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Maintenance 
Introduction
This section provides maintenance and safety information for servicing the 
Model 2200 switcher frame, control panel, and switcher power supplies.
Refer to the Diagnostics and Troubleshooting section for procedures to be 
used to isolate and resolve specific problems.
NOTE:  
Torx-head screws are used in the manufacture of many mechanical 
components on this equipment. You should have a set of Torx-head screwdrivers 
(including sizes T-10 through T-30) available before attempting any mechanical 
disassembly and reassembly operations.