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Section 4 — Maintenance
Removal of Pioneer +5 Volt Supply
To replace a Pioneer +5 Volt assembly with a Todd Multi-Output assembly,
proceed as follows:
1. On the front panel of the main Signal Processor Frame Power Supply,
turn off the main power switch. The indicator LEDs on the front panel
will go out.
If there is a Redundant Signal Processor Frame Power Supply, also turn
off its main power switch.
2. Inside the switcher Control Panel, turn off the main Control Panel
Power Supply switch and (if present) the redundant Control Panel
Power Supply switch.
3. At the rear of the equipment rack, disconnect AC power from the Signal
Processor Frame Power Supply by unplugging the cable from the AC
power source. If there is a redundant Signal Processor Frame Power
Supply, also disconnect it from the AC power source.
WARNING
If a redundant power supply is installed, power to both supplies must be
disconnected, due to the interconnecting wiring.
4. Remove both the right and left rear covers of the power supply frame,
as viewed from the rear, to access the wiring connections. See
Figure 4-6.