Contents

About this manual
Chapter 1. Safety information
- General safety
- Electrical safety
- Safety inspection guide
- Handling devices that are sensitive to electrostatic discharge
- Grounding requirements
- Safety notices (multilingual translations)
Chapter 2. Important service information
- Strategy for replacing FRUs
  - Strategy for replacing a hard disk drive
  - Important notice for replacing a system board
  - How to use error codes
- Strategy for replacing FRUs for CTO, CMV, and GAV products
  - Product definition
  - FRU identification for CTO, CMV, and GAV products
Chapter 3. General checkout
- What to do first
- Checkout guide
  - Lenovo Solution Center
  - Quick test programs
  - UEFI diagnostic program
  - Bootable diagnostic programs
- Power system checkout
  - Checking the ac power adapter
  - Checking operational charging
  - Checking the battery pack
  - Checking the backup battery
Chapter 4. Related service information
- Restoring the factory contents using the recovery disc set
- Using the Windows recovery programs on the Windows 8 operating system
- Passwords
  - Power-on password
  - Hard disk password
  - Supervisor password
  - How to remove the power-on password
  - How to remove the hard disk password
- Power management
  - Screen blank mode (for the Windows 7 operating system only)
  - Sleep mode
  - Hibernation mode
- Symptom-to-FRU index
  - Numeric error codes
  - Error messages
  - No-beep symptoms
  - LCD-related symptoms
  - Intermittent problems
  - Undetermined problems
Chapter 5. Status indicators
Chapter 6. Special keys
Chapter 7. Locations
- Locating computer controls, connectors, and indicators
  - Front view
  - Rear view
  - Bottom view
- Locating FRUs and CRUs
  - Major FRUs and CRUs
  - LCD FRUs and CRUs
- Looking up FRU information
Chapter 8. FRU replacement notices
- Screw notices
- Retaining serial numbers
  - Restoring the serial number of the system unit
  - Retaining the UUID
  - Reading or writing the ECA information
Chapter 9. Removing or replacing a FRU
- General guidelines
- Before servicing your computer
- 1010 Battery pack
- 1020 Bottom slot cover
- 1030 Memory modules
- 1040 Hard disk drive or solid-state drive
- 1050 PCI Express Mini Card for wireless LAN
- 1060 PCI Express Half Mini Card for wireless WAN or mSATA solid-state drive
- 1070 Keyboard
- 1080 Backup battery
- 1090 Keyboard bezel
- 1100 Microphone
- 1110 Speaker assembly
- 1120 I/O sub card with USB connector
- 1130 CRT board assembly (with cable)
- 1140 System board assembly
- 1150 Thermal fan assembly
- 1160 LCD unit
- 1170 DC-in connector and base cover assembly
- 2010 LCD bezel assembly
- 2020 LCD panel, LCD cable , and hinges
- 2030 Integrated camera
- 2040 Wireless antenna assembly and LCD rear cover assembly
Appendix A. Notices
- Electronic emission notices
- Trademarks

Lenovo ThinkPad E135 Hardware Maintenance Manual

Lenovo ThinkPad E135 Laptop manual cover

Pages 97

Year 2012

Language(s)

of 97

Lenovo ThinkPad E135 Laptop Specification

The Lenovo ThinkPad E135 is a compact and efficient laptop designed for business professionals and students who require reliable performance and portability. It features an 11.6-inch HD anti-glare display with a resolution of 1366 x 768 pixels, delivering clear visuals suitable for both work and leisure. Powered by AMD's dual-core processors, the E135 provides a balance of power and energy efficiency, making it ideal for daily computing tasks. It comes equipped with up to 8GB of DDR3 RAM, allowing for smooth multitasking and enhanced productivity.

For storage, the laptop offers options ranging from traditional hard drives to faster solid-state drives, catering to different performance needs and budget considerations. The integrated AMD Radeon HD graphics deliver adequate performance for basic graphical tasks and media playback. Connectivity options are comprehensive, including USB 3.0 ports, HDMI output, and a 4-in-1 card reader, facilitating easy data transfer and peripheral connections. The laptop also supports reliable wireless connectivity with Wi-Fi and Bluetooth capabilities.

The ThinkPad E135 is designed with ergonomics in mind, featuring Lenovo's acclaimed spill-resistant keyboard that offers a comfortable typing experience. Its compact form factor and lightweight design make it easy to carry, suitable for professionals on the go. The laptop is powered by a 6-cell battery, providing satisfactory battery life for extended use without frequent charging. Running on Windows operating systems, the E135 is compatible with a wide range of software and applications, ensuring versatility for various user needs. Overall, the Lenovo ThinkPad E135 combines functionality, portability, and value in a small package, making it a practical choice for users seeking a reliable laptop for everyday use.

Lenovo ThinkPad E135 Laptop F.A.Q.

How do I reset the BIOS password on my Lenovo ThinkPad E135?

To reset the BIOS password, you need to remove the CMOS battery for a few minutes and then reattach it. Please note that this procedure may void your warranty and should be performed by a professional technician.

What should I do if the Lenovo ThinkPad E135 fails to boot?

First, check the power supply and battery. If those are fine, try booting into Safe Mode by pressing F8 during startup. If the issue persists, it might be necessary to perform a system restore or reinstall the operating system.

How can I improve the battery life of my Lenovo ThinkPad E135?

To enhance battery life, reduce screen brightness, disable unnecessary background applications, and use power-saving modes. Regularly check for battery driver updates and ensure that your system is running efficiently.

What is the procedure to upgrade RAM on the Lenovo ThinkPad E135?

To upgrade RAM, first power off the laptop and remove the battery. Open the back cover to access the RAM slot. Carefully remove the existing RAM and insert the new module, ensuring it’s properly seated. Reattach the cover and battery before powering on the device.

How do I resolve overheating issues on my Lenovo ThinkPad E135?

Ensure the laptop is placed on a hard, flat surface to allow proper airflow. Clean the vents and fans regularly to prevent dust buildup. Consider using a cooling pad and keeping the device in a well-ventilated area.

Why is my Lenovo ThinkPad E135 running slow?

Check for malware and perform a virus scan. Ensure there is sufficient free disk space and consider upgrading RAM if needed. Disable startup programs and defragment the hard drive to improve performance.

How can I connect my Lenovo ThinkPad E135 to a wireless network?

Click on the network icon in the taskbar, select the desired Wi-Fi network, and click 'Connect'. Enter the network security key if prompted. Ensure that the wireless adapter is enabled and updated.

What should I do if the touchpad on my Lenovo ThinkPad E135 is not working?

Check if the touchpad is disabled by pressing the function key combination (usually Fn + F6). Update the touchpad drivers from the Lenovo support website. If the problem persists, try connecting an external mouse to troubleshoot further.

How do I perform a factory reset on a Lenovo ThinkPad E135?

To perform a factory reset, backup all important data first. Restart the laptop and press the 'ThinkVantage' button or F11 during startup to access recovery options. Follow the on-screen instructions to restore the system to factory settings.

What drivers should I install after reinstalling the OS on my Lenovo ThinkPad E135?

Install chipset, graphics, audio, network, and touchpad drivers. Visit the Lenovo support website to download the latest drivers compatible with your operating system. Ensure that all installed drivers are up to date to maintain system stability.