Lenovo ThinkStation D20 Hardware Maintenance Manual - Page 118
Removing the cover, The heat sink and microprocessor might be very hot. Turn off the computer and wait
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1 Power cord connector 9 2 IEEE 1394 connector 10 3 Serial port 11 4 Ethernet connectors (2) 12 5 Audio line-out subwoofer/center speakers 13 connector 6 Serial port (some models) 14 7 Audio line-in connector 15 8 Video connector (some models) 16 Audio line-out front speakers connector Microphone connector Audio line-out rear speakers connector Audio line-out side speaker connector USB connectors (8) Optical SPDIF (Sony Philips Digital Interconnect Format) out connector Optical SPDIF in connector eSATA connector Removing the cover CAUTION: The heat sink and microprocessor might be very hot. Turn off the computer and wait three to five minutes to let the computer cool before opening the computer cover. To remove the computer cover: 1. Remove any media from the drives and shut down your operating system. Turn off all attached devices. Turn off the computer. 2. Unplug all power cords from electrical outlets. 110 ThinkStation Hardware Maintenance Manual