P50 Hmm En
ThinkPad P50 Hardware Maintenance Manual
Note: Before using this information and the product it supports, be sure to read the general information under Appendix A 'Notices' on page 115.
Fourth Edition (April 2019)
© Copyright Lenovo 2015, 2019.
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
| About this manual . . . . . . . . . . | . iii | Power-on password . . . . . . . | 34 |
|---|---|---|---|
| Chapter 1. Safety information. . . . | . 1 | Hard disk password . . . . . . . Supervisor password . . . . . . . | 34 34 |
| General safety . . . . . . . . . . . . . . | . 1 | How to remove the power-on password | 35 |
| Electrical safety . . . . . . . . . . . . . . | . 1 | How to remove the hard disk password. | 35 |
| Safety inspection guide. . . . . . . . . . . | . 2 | Power management . . . . . . . . . | 36 |
| Handling devices that are sensitive to electrostatic discharge . . . . . . . . . . . . . . . . | . 3 | Screen blank mode (for Windows 7 only) | 36 |
| Grounding requirements . . . . . . . . . . | . 4 | Sleep mode . . . . . . . . . . | 36 |
| Safety notices (multilingual translations) | . 4 | Hibernation mode . . . . . . . . | 36 |
| . . . . . | Symptom-to-FRU index . . . . . . . | 37 | |
| Chapter 2. Important service | Numeric error codes . . . . . . . | 37 | |
| information. . . . . . . . . . . . . . | 21 | Error messages . . . . . . . . . | 39 |
| Strategy for replacing FRUs . . . . . . . . . | 21 | Beep symptoms. . . . . . . . . | 39 |
| Strategy for replacing a hard disk drive or a solid-state drive . . . . . . . . . . . . | 21 | No-beep symptoms . . . . . . . LCD-related symptoms . . . . . . Intermittent problems. . . . . | 40 40 |
| Important notice for replacing a system board . . . . . . . . . . . . . . . . | 22 | . . Undetermined problems . . . . . | 40 41 |
| How to use error message . . . . . . . . | 22 | ||
| Strategy for replacing FRUs for CTO, special-bid, and standard models. . . . . . . . . . . . | 22 | Chapter 5. Configuring RAID . | 43 |
| Product definition . . . . . . . . . . . | 22 | Chapter 6. Special keys . . . . | 45 |
| FRU identification . . . . . . . . . . . | 22 | Chapter 7. Locations . . . . . | 47 |
| Chapter 3. General checkout . . . . | 25 | Locating computer controls, connectors, and . . . . . | |
| What to do first . . . . . . . . . . . . . . | 25 | indicators . . . . . . . . | 47 |
| Checkout guide . . . . . . . . . . . . . . . . . . . . . . . | 26 26 | Front view . . . . . . . . . . . Rear view . . . . . . . . . . | 47 48 |
| Lenovo Solution Center . . . . . . . . . | 26 | . Bottom view . . . . . . . . . . | 48 |
| Quick test programs . UEFI diagnostic program . . . . . . . . | 27 | Status indicators . . . . . . . . | 48 |
| Bootable diagnostic programs . . . . . . | 27 | Locating FRUs and CRUs . . . . . . . | 50 |
| Power system checkout . . . . . . . . . . | 28 | Major FRUs . . . . . . . . . . | 52 |
| Checking the ac power adapter . . . . . . | 28 | LCD FRUs . . . . . . . . . . . Miscellaneous parts . . . . . . . | 54 56 |
| Checking the battery pack . . . . . . . . | 29 | Connector and cable guide . . . . up FRU information . | 56 59 |
| Looking . . . . . | |||
| Checking the coin-cell battery . . . . . . | 29 | ||
| Chapter 4. Related service . . . . . . | 31 | Chapter 8. FRU replacement notices . . . . . . . . . . . . . | 61 61 |
| information. . . . . . . . Restoring the factory contents by using the Recovery Disc Set . . . . . . . . . . . . . | 31 32 | Screw notices . . . . . . . . . . . Retaining serial numbers . . . . . . . Restoring the serial number | 62 |
| Recovery overview for the Windows 10 operating system . . . . . . . . . . . . . . . . . Resetting your computer . . . . . | of the system unit . . . . . . . . . . . . . . Retaining the | 62 63 | |
| . . . Using advanced startup options . . . . . Recovering your operating system if Windows | 32 32 | UUID. . . . . . . . | 63 |
| 10 fails to start . . . . . . . . . . . . Creating and using a recovery USB drive . | 33 | Reading or writing the ECA information Chapter 9. Removing or replacing | |
| . . | 33 | General guidelines. . . . | 65 |
| Passwords. . . . . . . . . . . . . . | 34 | . . . . . . | 65 |
| . | FRU. . . . . . . . . . . . . . . |
Table Caption: This table is a table of contents for a service manual, outlining the various chapters and sections covered, along with their corresponding page numbers, to guide users in understanding and performing service-related tasks on a device.
Table Caption: This table appears to be an index or table of contents for a service manual, listing various computer components and procedures with corresponding page numbers. It is divided into sections related to common service tools, component removal (categorized by numbering schemes like 1000 and 2000), and appendices.
About this manual
This manual contains service and reference information for the following ThinkPad ® products.
ThinkPad P50
Machine Types (MT) 20EN and 20EQ
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 ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing a ThinkPad product, be sure to read all the information under Chapter 1 'Safety information' on page 1 and Chapter 2 'Important service information' on page 21.
Chapter 1. Safety information
This chapter presents following safety information that you need to be familiar with before you service a ThinkPad 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;
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