Operating Requirements
All machines have two power-on switches: one on the system unit and one
on the display. High voltage machines (180–265 V ac) have a power cord
from the display to the system unit and a switched appliance connector
allowing the machine to be turned on with one power switch on the system
unit.
High voltage Northern and Southern Hemisphere SVGA displays may come
with a voltage selector switch, allowing selection of voltage of either 110 V
ac or 220 V ac. This switch must be in the 220 V ac position when the
machine is plugged into a 220 V ac electrical outlet.
When the system unit is powered off for 10 seconds or more and then
powered on, the power supply generates a “power good” signal that resets
the system logic.
Special Tools
The following special tools are required to service this system:
A meter similar to the Triplett** Model 310 (IBM P/N 9900167)
Wrap Plug, IBM P/N 72X8546
Video Memory Removal Tool, IBM P/N 9900764.
General Information 1-23
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