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System Board Jumpers - Lenovo ThinkServer TD350 70DG User Manual And Hardware Maintenance Manual

Machine types: 70dg, 70dh, 70dj, 70dk, 70dl, 70dm, 70dn, and 70dq user guide.
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System board jumpers

A jumper is a short length of conductor used to set up or adjust printed circuit boards, such as the system
board of a computer. A jumper usually is encased in a non-conductive block of plastic for convenient use
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 cap, an electrical connection
is made between the pins. As a result. the equipment is instructed to activate certain settings accordingly.
The following illustration shows a jumper in the default setting position (pin 1 and pin 2). The default setting
position is the correct position for normal operation.
Figure 25. Default jumper setting
ThinkServer TD350 User Guide and Hardware Maintenance Manual


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