Tektronix Grass Valley 4000, Installation And Service, Page: 213 / 286

4-17
Servicing Frame Power Supplies
Installation of Todd Multi-Output Supply
Installation of the replacement supply is not a simple reversal of the removal
procedure. The reason for this is that the AC power connection on the Todd supply
is at the upper left corner of the unit, whereas the connection on the Pioneer supply
is at the upper right.
Mount Terminal Block
1. Before installing the new power supply unit in the frame, mount the terminal
block (provided in the Field Modification kit) on the rear of the Todd Multi-
Output power assembly, as shown in
Figure 4-6 . The terminal block has four
terminals, but only two will be used. Remove and discard the four tab
connectors from the terminal block, but keep two of the screws for the next
step.
2. Install the blue and brown jumper wires from the kit as shown in Figure 4-6 .
Connect only the power supply ends for now. (You will have to disconnect the
wires from the terminal block again when connecting the frame wiring later in
this procedure.
Figure 4-6. Installation of Terminal Block and Jumpers
Using Screws
Provided,
Mount
Terminal Block
(from Kit)
on Rear of
Power Supply
Assembly
Install Blue
Jumper Wire
Install Brown
Jumper Wire
2405-01