IBM xSeries 230 61Y, Руководство по техническому обслуживанию аппаратной части

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System board switch block
The switch block contains microswitches 1-8. As pictured in this illustration, switch
8 is at the top of the switch block and switch 1 is at the bottom.
The following table describes the function for each switch.
Table 7. Switches 1-8
Switch
number
Switch
description
1 Microprocessor speed setting (requires switches 1-4). See Table 8 for specific settings.
2 Microprocessor speed setting (requires switches 1-4). See Table 8 for specific settings.
3 Microprocessor speed setting (requires switches 1-4). See Table 8 for specific settings.
4 Microprocessor speed setting (requires switches 1-4). SeeTable 8 for specific settings.
5 Power-on override. The default setting is Off (disabled).
When On, overrides the power-on switch and forces power-on mode. The system will
always boot without the use of the power-on switch.
6 Clock frequency selection. The default setting is Off.
When On, sets the host bus speed to 100 MHz. When Off, the host bus speed is 133 MHz.
7 Reserved. The default setting is Off.
8 Bypass power-on password. The default setting is Off.
When On, bypass the power-on password. When Off, require the user to enter the
power-on password at startup, if one is set.
Table 8. Microprocessor speed settings
Microprocessor
speed Switch 1 Switch 2 Switch 3 Switch 4
133/1000MHz off off off on
Note: The speed settings shown above apply only to unlocked processors. If the
processors are production level they are locked and there is no need to
change the speed settings.
System board LED locations
The following illustration identifies system-board LEDs. You may need to refer to
this figure when troubleshooting a problem.
Installing options
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