Lenovo IdeaCentre K230 IdeaCentre K220 Hardware Replacement Guide - Page 12

- Audio Line-out Connector: To connect to the speakers or headphones. -- WiFi antenna connector: To connect the computer to a wireless network.(This connector only equipped on the model with WiFi card. For more information about this connector, see WM600-B-LO Wireless 802. 11b/g Wireless PCI-E Adapter Card User Manual.) ---- Microphone Jack: To connect to audio input from a microphone. ---- Used to attach your computer to a telephone line for modem use. (some models equipped with this connector) --- Used to attach a telephone line to your computer for modem use. (some models equipped with this connector) -- Voltage: selection switch (Some models are equipped with this switch) 115 230 Figure 1 Figure 2 Check the position of the voltage-selection switch on the rear of the computer. Use a ballpoint pen to slide the switch, if necessary. 1. If the voltage supply range is 100-127 V ac, set the switch to 115 V. 2. If the voltage supply range is 200-240 V ac, set the switch to 230 V. Identifying parts on the system board The system board (sometimes called the planar or motherboard) is the main circuit board in your computer. It provides basic computer functions and supports a variety of devices that are factory-installed or that you can install later. The following illustrations show the locations of parts on the system board (Only one of below system board was preinstalled on your computer.). Hardware Replacement Guide 9 31036127 IdeaCentre K_HRG_EN.indd 9 2008.10.20 1:59:26 PM