AMI Mark IV Screamer, Manual

Page: 20 / 93

Step 4 Connect the Power Supply
The power supply should match the physical configuration of
the chassis. Make sure that the power switch is Off.
Before attaching all components, make sure that the proper
voltage has been selected. Power supplies often can run on a
wide range of voltages, but must be set (usually with a switch)
to the proper range. Use at least a 200 watt (or larger) power
supply, which should have built-in filters to suppress radiated
emissions. The filters will help pass the appropriate FCC
certification testing.
The power supply is connected to P8 and P9 on the
motherboard. The connectors should be keyed to prevent
mistakes. The keys on the connector must be cut to fit in some
power supplies.
See the figure above for the location of connectors P8 and P9,
standard 6-pin power supply connectors. AT-compatible power
supplies have two 6-pin connectors that are inserted in P8 and
P9. The 6-pin connector with 3 red wires and 2 black wires is
connected to P9 and the remaining 6-pin connector is
connected to P8.