System Board Led Locations - IBM xSeries 230 6RY Hardware Maintenance Manual

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 Switch
number 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
133/1000MHz
Note: The speed settings shown above apply only to unlocked processors. If the

System board LED locations

The following illustration identifies system-board LEDs. You may need to refer to
this figure when troubleshooting a problem.
Switch 1
off
processors are production level they are locked and there is no need to
change the speed settings.
Switch 2 Switch 3
off off
Switch 4
on
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