Grass Valley 1200 Installation - Manual (Page 118)

4-4
Section 4 Ñ Maintenance
Servicing Procedures
The following servicing procedures provide procedures for removal and
replacement of typical types of components and assemblies. Detailed
procedures are provided only where a component or module is unique or
requires special handling, tools, or test equipment.
Repairing Power Supplies
Grass Valley Products does not recommend or support field repair of
Model 1200 power supplies. Failed power supplies should be replaced.
WARNING
Remove all rings and other jewelry when you are working on
equipment that is powered up. Hazardous currents are present in
the power supplies, on the backplane, and on circuit modules.
Failure to follow this precaution could result in severe shock and
other injury.
Only qualified service personnel should work on the Control
Panel and Frame power supply assemblies. Failure to observe
this precaution could result in severe shock or potentially
expensive damage to your equipment.
Power Supply Configurations
The standard power supply configuration of the Model 1200 is a single
supply chassis for the Signal Processor Frame and single supply chassis for
the Control Panel. The power supply chassis are separately connected to
AC source power and each chassis supplies independent voltage/current
buses.