E31 70 Hmm En
Hardware Maintenance Manual
Lenovo E31-70, Zhao Yang E31-70
Note: Before using this information and the product it supports, be sure to read the general information under Appendix A 'Notices' on page 71.
First Edition (April 2015)
© Copyright Lenovo 2015.
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.
Contents
Table Caption: This table is a table of contents for a manual, organized into chapters and sub-sections with corresponding page numbers. The content appears to be duplicated across multiple columns.
| Chapter 7. Hotkeys . | . . . . | . . . . . 31 |
|---|---|---|
| Chapter 8. Locations | . . . . . . . | . . 33 |
| Locating FRUs and CRUs . | . . . . . . | . . . 33 |
| Major FRUs and CRUs. | . . . . . . | . . . 34 |
| Miscellaneous parts and other FRUs . . . . 39 Chapter9.FRU replacement . . . . . . . | Miscellaneous parts and other FRUs . . . . 39 Chapter9.FRU replacement . . . . . . . | Miscellaneous parts and other FRUs . . . . 39 Chapter9.FRU replacement . . . . . . . |
| notices . . . . . . . . | . | 49 |
| Screw notices . . . . . . | . . . . . . | . . . 49 |
| Chapter10.Removing or replacing a . . . . . . . . | Chapter10.Removing or replacing a . . . . . . . . | Chapter10.Removing or replacing a . . . . . . . . |
| FRU . . . . . . . . . | . | 51 |
| General guidelines . . . . | . . . . . . | . . . 51 |
| 1010 Base cover assembly . | . . . . . . | . . . 52 |
| 1020 Battery pack . . . . . . . | . . . | . . . 53 |
| 1040 Memory module . . . . | . . . . | . . . . 55 |
| 1050 Wireless-LAN /Bluetooth card . . 1060 Thermal fan assembly and Heat Sink | . | . . . 56 |
| assembly . . . . . . . . . . . 1070 System board. . . . | . . . . . . . | . . . . 58 . . . . 59 |
| 1080 Speaker assembly . . | . . . . . | . . . . 61 |
| 1090 LCD unit and DC-in cable . . . . . . . . 62 1100 Audio board, audio board cable, touch pad board | 1090 LCD unit and DC-in cable . . . . . . . . 62 1100 Audio board, audio board cable, touch pad board | 1090 LCD unit and DC-in cable . . . . . . . . 62 1100 Audio board, audio board cable, touch pad board |
| board cable, finger printer board and LED . . . . . . . | . | 63 |
| 1110 LCD front bezel . | . . . . 65 | |
| 1120 LCD panel, EDP cable and | hinges . | . . . . 66 |
| 1130 Integrated camera and LCD and LCD | cable . | . . . . 67 |
| 1140 Antenna assembly | cover. | . . . . 68 |
| Appendix A. Notices. Electronic emissions notices | . . . . . . . . . . . | . . . 71 . . . . 72 |
| Trademarks . . . . . . . | . . . . . . | . . . 72 |
| Appendix B. Abbreviation table . . . . 73 | Appendix B. Abbreviation table . . . . 73 | Appendix B. Abbreviation table . . . . 73 |
Table Caption: This table appears to be a Table of Contents or index from a technical manual, detailing chapter titles, specific sections within chapters, and their corresponding page numbers.
About this manual
This manual contains service and reference information for the following Lenovo ® products.
Lenovo E31-70, Zhao Yang E31-70
Machine Type (MT) 80KC, 80KX and 80KW
Use this manual along with the advanced diagnostic tests to troubleshoot problems.
Important: This manual is intended only for trained service technicians who are familiar with Lenovo products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing a Lenovo product, be sure to read all the information under Chapter 1 'Safety information' on page 1 and Chapter 2 'Important service information' on page 19.
Chapter 1. Safety information
This chapter presents following safety information that you need to be familiar with before you service a Lenovo notebook computer.
- 'General safety' on page 1
- 'Electrical safety' on page 1
- 'Safety inspection guide' on page 2
- 'Handling devices that are sensitive to electrostatic discharge' on page 3
- 'Grounding requirements' on page 4
- 'Safety notices (multilingual translations)' on page 4
General safety
Follow these rules to ensure general safety:
- Observe good housekeeping in the area of the machines during and after maintenance.
- When lifting any heavy object:
- Make sure that you can stand safely without slipping.
- Distribute the weight of the object equally between your feet.
- Use a slow lifting force. Never move suddenly or twist when you attempt to lift.
- Lift by standing or by pushing up with your leg muscles; this action removes the strain from the muscles in your back. Do not attempt to lift any object that weighs more than 16 kg (35 lb) or that you think is too heavy for you.
- Do not perform any action that causes hazards to the customer, or that makes the equipment unsafe.
- Before you start the machine, make sure that other service technicians and the customer's personnel are not in a hazardous position.
- Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine.
- Keep your tool case away from walk areas so that other people will not trip over it.
- Do not wear loose clothing that can be trapped in the moving parts of a machine. Make sure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it.
- Insert the ends of your necktie or scarf inside clothing or fasten it with a non-conductive clip, about 8 centimeters (3 inches) from the end.
- Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing.
Attention: Metal objects are good electrical conductors.
- Wear safety glasses when you are hammering, drilling, soldering, cutting wire, attaching springs, using solvents, or working in any other conditions that might be hazardous to your eyes.
- After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective.
- Reinstall all covers correctly before returning the machine to the customer.
- Fan louvers on the machine help to prevent overheating of internal components. Do not obstruct fan louvers or cover them with labels or stickers.
Electrical safety
Observe the following rules when working on electrical equipment.
Important: Use only
