4-10
Section 4 — Maintenance
It is important to know what type of power units you have for the reasons listed
below:
1.
Because of differences in the electronic design, it is not possible to operate
Pioneer and Todd power units of the same type in a redundant power supply
configuration. In other words, you may not connect a Pioneer Multi-Output
unit in parallel with a Todd Multi-Output unit, and you may not connect a
P5 Volt unit in parallel with a Todd +5 Volt unit.
2.
A Model 4000-2A/B switcher with Todd power supply units may operate on
110VAC. Pioneer supply units must always operate on 220VAC.
3.
Todd +5V power supply units are internally wired for power surge protection,
P5V power supply units are not. There is a jumper in the Model 4000
fan assembly at the top of the Signal Processor Frame which must be set to
either bypass or enable a surge protection circuit depending on the type of unit
present. Refer to the “Fan Jumper Settings” heading in Section 2 in this
manual.
Before replacing your power supply, you will need to determine the type of supply
units you have. To do this:
1.
Locate the assembly number sticker on the back of the power supply frame.
Systems with Pioneer power units will have power supply frames numbered
098901-00 or -01. Systems with Todd power units will have frames labeled
098901-03.
2.
Remove the back covers on the left and right sides of the primary and/or
redundant power supply frames. Leave the covers off for installation purposes
later.
You may distinguish between a Todd supply and a Pioneer supply as follows:
Viewed from the front, both +5 V and Multi-Output Pioneer units are each
about 5 inches wide, and each has a 4 1/2 inch diameter fan.
The Todd +5 V unit (on the left) is about 3 1/2 inches wide. The Multi-Output
supply is slightly narrower. Each supply has two cooling fans.
From the rear, the Todd and P5 Volt units can also be identified by the
positions of the large power lugs on the rear of the supplies. They are arranged
horizontally on the Pioneer supplies, and diagonally on the Todd supplies. For
clarity however, both types of supplies will be illustrated in this manual in
most cases.
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 ...