E480, E485, and R480 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 91.
Second Edition (November 2018)
© Copyright Lenovo 2017, 2018.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to 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 |
|---|
Table Caption: Table Content 365613
| Supervisor password . . . . . . . . . |
|---|
| . . 33 |
| How to remove the power-on password . . . 33 |
| How to remove the hard disk password. . . . 34 |
| Power management . . . . . . . . . . . . . 34 |
| Sleep mode . . . . . . . . . . . . . . 34 Hibernation mode . . . . . . . . . . . . 35 |
| Beep symptoms. . . . . . . . . . . . . 38 No-beep symptoms . . . . . . . . . . . 39 LCD-related symptoms . . . . . . . . . . 39 |
| Symptom-to-FRU index . . . . . . . . . . . 35 Numeric error codes . . . . . . . . . . . 36 Error messages . . . . . . . . . . . . . 37 |
| Intermittent problems. . . . . . . . . . . 40 Undetermined problems . . . . . . . . . 40 |
| Chapter 5. Status indicators . . . . . 41 |
| Chapter 6. Function keys . . . . . . . 43 |
| Locating computer controls, connectors, and indicators . . . . . . . . . . . . . . . . . 45 |
| Chapter 7. Locations . . . . . . . . . 45 |
| Bottom view . . . . . . . . . . . . . . 46 |
| Locating FRUs and CRUs . . . . . . . . . . . 46 Major FRUs . . . . . . . . . . . . . . 48 |
| Chapter 8. FRU replacement notices . . . . . . . . . . . . . . . . . 55 |
| Screw notices . . . . . . . . . . . . . . . 55 Retaining serial numbers . . . . . . . . . . . 56 Restoring the serial number of the system unit . . . . . . . . . . . . . . . . . . 56 |
| Retaining the UUID. . . . . . . . . . . . 57 |
| Chapter 9. Removing or replacing a |
| . . . . . . . . . . . . . . . 59 |
| FRU. . . . |
Table Caption: This table of contents appears to be from a technical manual for a computer, covering topics such as passwords, power management, troubleshooting symptoms and error codes, status indicators, function keys, component locations, and FRU (Field Replaceable Unit) replacement procedures.
Table Caption: This table lists various computer components with their corresponding numbers and seemingly redundant or blank entries across multiple columns. The rightmost column contains a number that likely represents a page number.
Table Caption: This table lists components, likely from a service manual, with corresponding part numbers or descriptions and page numbers, spread across multiple columns that may represent different configurations or sections.
About this manual
This manual contains service and reference information for the following ThinkPad ® products.
ThinkPad E480 and R480
Machine types (MT) 20KN, 20KQ, and 20KR
ThinkPad E485
Machine type (MT) 20KU
Use this manual along with the advanced diagnostic tests to troubleshoot problems.
Important: This manual is intended only for
