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Section 4 — Maintenance
Replacement of Individual Power Supply Assemblies
If it is necessary to replace an individual power supply in the Signal Processor
Frame Power Supply, it is important for you to be aware of the following
information:
■
Two types of power supplies are used in the Signal Processor Frame Power
Supply for the 4000 Switchers—a Multi-Output supply and a high-c5
Volt supply.
■
Power supply units from two different manufacturers—Pioneer Magnetics
and Todd Products Corporation—have been used in the Signal Processor
Frame Power Supplies.
The units from the two manufacturers are very different in appearance, but are
electrically compatible, with the following exception:
In a redundant power system, the two +5 Volt supplies must be of the same
“make” and the two Multi-Output supplies must be of the same make. (The +5
Volt and Multi-Output supplies, however, may be of different makes.)
This means that if you need to replace one power supply assembly in a
redundant power system, you must either replace that supply with one of the
same make, or replace both supplies that operate in parallel.
Check to see that your replacement is compatible in a redundant system, and, if
necessary, contact Grass Valley Customer Service.
NOTE:
In a non-redundant power system, if both power supply units (one Multi-Output
and one +5V) in the single power supply frame are Todd supplies, the frame can be wired
to operate on 110 volts, as described in the Installation Section of this manual.
Configurations
Each power supply comes as a complete assembly (“sled”) that must be replaced
as a unit. As viewed from the rear of the frame, the +5 Volt supply assembly is
located in the compartment at the right side of the chassis and the Multi-Output
(+13V/–13V/–5.2V/+48V) supply is located in the compartment at the left.
Procedures
The following procedures (one for the Multi-Output supply and one for the +5
Volt supply) describe replacing Pioneer power supply assemblies with Todd
power supply assemblies.
For any of the other three possible replacements—replacing a Pioneer unit with a
Pioneer, replacing a Todd unit with a Todd, or replacing a Todd unit with a
Pioneer—use the following procedures as guides and perform the appropriate
steps.
Summary of Contents for Grass Valley 4000
Page 3: ...iii Tektronix Grass Valley Products P O Box 1114 Grass Valley CA 95945 916 478 3800 ...
Page 4: ...iv Tektronix Grass Valley Products P O Box 1114 Grass Valley CA 95945 916 478 3800 ...
Page 34: ...1 20 Section 1 System Overview ...
Page 138: ...2 104 Section 2 Installation ...
Page 196: ...3 58 Section 3 Functional Description ...
Page 286: ...Index 6 Index ...