Lenovo ThinkServer RD630 Hardware Maintenance Manual page 60

and to avoid any possible damage to a live circuit. Jumper pins arranged in groups on the system board are
called jumper blocks. When two or more jumper pins are capped with a jumper, an electrical connection is
made between them and the equipment is thus instructed to activate certain settings accordingly.
The following illustration shows a jumper in the default setting position (pin 1 and pin 2). This is the correct
position for normal operation.
Figure 31. Default jumper setting
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ThinkServer Hardware Maintenance Manual