IBM 7133 Series, Руководство по обслуживанию

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Lights and Power Switch (Models 500 and 600)
F r o n t v ie w B a c k v ie w
1
Power switch (|/ ): This switch controls the internal dc power that is supplied to
| the 7133 by the fan-and-power-supply assemblies. To turn on the dc power on Model
| 500, press the switch, and hold it pressed for two seconds. To turn on the power on
| Model 600, press and release the switch.
Repeat the action to turn off the dc power. When the dc power is turned off, mainline
power is still present in the fan-and-power-supply assemblies if the 7133 is connected
to the mainline-power source.
2
Subsystem Power light ( ): This green light is on when the power switch has
been pressed to turn on the dc voltage, and the dc voltage is present in the 7133.
3
Subsystem Check light ( ): This amber light comes on if a failure occurs in the
7133 subsystem. The subsystem might be able to continue operating satisfactorily
although the failure of a particular part has been detected.
4
Power Card light: This green light is on when electrical power is present on the
card. The light is not visible when the front cover is closed.
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7133 Service Guide