Lenovo 4157 - ThinkStation S20 - 2 GB RAM, Hardware Maintenance Manual

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1
Power cord connector
9
Microphone connector
2
Serial port
10
Audio line-out rear speakers connector
3
Ethernet connector
11
SPDIF (Sony Philips Digital Interconnect Format) out
connector
4
Serial port (some models)
12
USB connectors (8)
5
Audio line-out subwoofer/center speakers
connector
13
Optical SPDIF in connector
6
Audio line-in connector
14
Optical SPDIF out connector
7
Video connector (some models)
15
eSATA connector
8
Audio line-out front speakers 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.
3. Disconnect the cables attached to the computer. This includes power cords, input/output (I/O) cables,
and any other cables that are connected to the computer. See “Locating controls and connectors on the
front of your computer” on page 75 and “Rear connectors” on page 75.
4. Remove any locking devices, such as a cable lock or padlock that secures the computer cover. Open the
keylock if it is in the locked position.
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ThinkStation Hardware Maintenance Manual