Lenovo C2 Series User manual

Version 1.0
Machine type: 10113/6268 [C240]
10114/6269 [C245]
2012.10
Lenovo
C2 Series
31503498
User Guide

Important Safety Information
Before using this manual, it is important that you read and understand all of the
related safety information for this product. Refer to the Safety and Warranty Guide
that you received with this product for the latest safety information. Reading and
understanding this safety information reduces the risk of personal injury or product
damage.
The interface and functions shown in this User Guide are provided for reference
only and may differ from actual product appearance. Product design and
specifications may be changed without notice.
Danger: Be aware of extremely hazardous or potentially lethal situations.
Attention: Be aware of possible damage to programs, devices, or data.
Note: Pay attention to this important information.
© Copyright Lenovo 2012. All rights reserved.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered
pursuant a General Services Administration “GSA” contract, use, reproduction, or
disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.

i
Contents
Contents
Important Safety Information
Using the Computer Hardware ................................................. 1
Front view of the computer.........................................................................2
Left and right views of the computer ..........................................................3
Rear view of the computer .........................................................................4
Computer stand .........................................................................................5
Basic connector instructions ......................................................................5
Connecting your computer.........................................................................6
Important information about using the computer ........................................7
Troubleshooting and Confirming Setup ................................... 9
Troubleshooting Problems with Hard Disks...............................................10
Special considerations for troubleshooting system ...................................11
Performing Daily Maintenance Tasks ........................................................11
Hardware Replacement Guide ................................................ 13
Overview ..................................................................................................14
Replacing hardware .................................................................................17
Appendix. .................................................................................. 21
Declaration...............................................................................................21
Trademarks ..............................................................................................22
Enabling ErP compliance mode................................................................22
Ubuntu Linux Special Instructions.............................................................23

ii Contents

This chapter contains the following
topics:
Introduction to the computer hardware
Information on computer connections
Note: The descriptions in this chapter might be
different from what you see on your computer,
depending on the computer model and
configuration.
User Guide 1
Using the Computer Hardware

2User Guide
Front view of the computer
Attention: Be careful not to block any air vents on the computer. Blocked
air vents can cause overheating.
Built-in microphone Built-in camera
System Power On/Off indicator Hard disk drive indicator
WIFI status indicator Volume down (this function key
is available only in Windows
operating system)
Volume up (this function key
is available only in Windows
operating system)
Brightness down
Brightness up

3
User Guide
Left and right views of the computer
Attention: Be sure not to block any air vents on the computer. Blocked
air vents may cause thermal problems.
12
3
5
4
6
Optical drive Memory card reader
USB connectors Microphone connector
Headphone connector Power button

4User Guide
Rear view of the computer
1 2 34
5
Power connector HDMI-out connector
(selected models only)
USB 2.0 connectors
(selected models only)
Ethernet connector
Air vents

5
User Guide
Computer stand
15º
40º
Use the stand to position the display to your preference. It can be rotated 15º
forward and 40º backward.
Basic connector instructions
Note: Your computer may not have all of the connectors described in this
section.
Connector Description
Microphone Use this connector to attach a microphone to your
computer when you want to record sound or if you use
speech-recognition software.
Headphone Use this connector to attach headphones to your
computer when you want to listen to music or other
sounds without disturbing anyone.
USB connector Use this connector to attach a device that requires a USB
connection.
Ethernet connector Use this connector to attach the computer to an Ethernet-
type local area network.
HDMI connector
(optional)
Connects to the HDMI connector on your display or TV.
Memory card reader Use to view and share digital photos, music, and videos,
stored on a media card.
Power connector Connect to the power cable. The appearance of this
connector may vary.

6User Guide
Note: If your computer is equipped with a wireless keyboard or mouse,
follow the installation instructions for those devices.
Connecting your computer
Connecting the power cord
Connect the power cord to an electrical outlet. We recommend using a grounded
connection or a surge protector.

7
User Guide
Important information about using the
computer
Press the power button on the side of the computer to turn on the computer.
Hold the computer tightly when you carry it.

8User Guide

Troubleshooting and
Confirming Setup
This chapter contains the following
topic:
Troubleshooting and Problem Resolution
User Guide 9

10 User Guide
Solving Problems
Follow these tips when troubleshooting your computer:
• Ifyouaddedorremovedapartbeforetheproblemstarted,reviewthe
installation procedures to ensure that the part is correctly installed.
• Ifaperipheraldevicedoesnotwork,ensurethatthedeviceisproperly
connected.
• Ifanerrormessageappearsonthescreen,writedowntheexactmessage.
This message may help support personnel diagnose and fix the problem(s).
• Ifanerrormessageoccursinaprogram,seetheHelpdocumentofthisprogram.
Troubleshooting Problems with Hard Disks
Problem: The capacity of the hard disk, as indicated by the system, is less than
the nominal capacity.
Further Technical Explanation: The nominal capacity of the hard disk is
expressed in the decimal system as 1000 bytes. But the actual hard disk capacity
is expressed in the binary system as 1024 bytes (For example, the nominal
capacity 1G is 1000M, while the actual capacity 1G is 1024M).
The capacity of the hard disk shown in operating system can be calculated
according to the calculations in the following example:
The nominal capacity of the hard disk is 40G, while its actual capacity should
be: 40 x 1000 x 1000 x 1000/(1024 x 1024 x 1024) = 37G.
If the Service partition of 3G - 3 x 1000 x 1000 x 1000/(1024 x 1024 x 1024) =
2.79G is subtracted, the capacity of the hard disk shown in the system can
be obtained.
The capacity of the hard disk as calculated using this method may be slightly
different from the actual capacity due to the rounding of totals.

11
User Guide
Special considerations for troubleshooting
system
Record the following information as it may be useful later when troubleshooting
system problems:
The drivers for this computer model only support the Windows 8 system.
Performing Daily Maintenance Tasks
Cleaning the computer components
Because many of the computer components consist of sophisticated integrated
circuit boards, it is very important to periodically clean the computer to prevent
dust buildup. The cleaning supplies you need to clean the components include:
a vacuum cleaner, a soft cotton cloth, pure water (preferably purified or distilled
water) and cotton swabs.
Attention: Before you clean your computer, disconnect the computer
from the electrical outlet. Clean your computer with a soft cloth
dampened with water. Do not use liquid or aerosol cleaners, which may
contain flammable substances.
Note: To avoid damaging the computer or display, do not spray cleaning
solution directly onto the display. Only use products specifically designed
for cleaning displays, and follow the instructions included with the product.
The following are general methods for cleaning the components:
• Youcanuseasoftclothtoremovedustonthesurfaceofthecomputer,the
monitor, the printer, the speakers and the mouse.
• Youcanuseavacuumcleanertocleaninotherwiseinaccessiblecorners.
• Tocleanthekeyboardthoroughly,shutdownthecomputerandscrubitgently
with a wet cloth. Do not use the keyboard until it is dry.

12 User Guide
Do not do any of the following:
• Allowwatertoenterthecomputer.
• Useaheavilydampenedcloth.
• Spraywaterdirectlyontothesurfaceofthemonitororinsidethecomputer.
LCD monitor should be cleaned daily. Use a dry cloth to brush dust from the
monitor and keyboard every day. Keep all surfaces clean and free of grease stains.

Hardware Replacement Guide
This chapter contains the following
topics:
Replacing the optical drive
Replacing the keyboard and mouse
User Guide 13

14 User Guide
Overview
This guide is intended to be used by customers who are replacing Customer
Replaceable Units (CRUs) as well as trained service personnel who are replacing
Field Replaceable Units (FRUs). In this guide, CRUs and FRUs will often be referred
to as parts.
Note: Trained service personnel should refer to the Hardware Maintenance
Manual (HMM) for parts ordering information.
This guide does not include procedures for all parts. It is expected that cables,
switches, and certain mechanical parts can be replaced by trained service
personnel without the need for step-by-step procedures.
Note: Use only parts provided by Lenovo®.
This guide contains procedures for replacing the following parts:
• Opticaldrive
• Keyboard,mouse(wired)
Safety information for replacing CRUs
Do not open your computer or attempt any repairs before reading the “Important
safety information” in the Safety and Warranty Guide that was included with your
computer. If you no longer have this copy of the Safety and Warranty Guide, you
can obtain one online from the Support Web site at http://support.lenovo.com.

15
User Guide
Additional information resources
If you have Internet access, the most up-to-date information for your computer is
available from the World Wide Web.
Youcanndthefollowinginformation:
• CRUremovalandinstallationinformation
• Publications
• Troubleshootinginformation
• Partsinformation
• Linkstootherusefulsourcesofinformation
To access this information, go to: http://support.lenovo.com
Tools required
To disassemble the computer, you need the following tools:
• Wristgroundingstrapandconductivematforpreventingelectrostaticdischarge
• Flatscrewdriver
• Phillipsscrewdriver
Note: The screws for the different components vary in size. During the
disassembly procedure, group the screws with their corresponding
components to avoid a mismatch when replacing the components.