Lenovo 90JB Manuals

Manuals and User Guides for Lenovo 90JB. We have 1 Lenovo 90JB manual available for free PDF download: Hardware Maintenance Manual

Lenovo 90JB Hardware Maintenance Manual

Lenovo 90JB Hardware Maintenance Manual (61 pages)

Brand: Lenovo | Category: Laptop | Size: 6.92 MB

Table of Contents

Table of Contents
5
Chapter 1. About this Manual

7
- Important Safety Information
  7
Chapter 2. Safety Information

9
- General Safety
  9
- Electrical Safety
  9
- Safety Inspection Guide
  11
- Handling Electrostatic Discharge-Sensitive Devices
  11
- Grounding Requirements
  12
- Safety Notices
  12
Chapter 3. General Information

15
- Specifications
  15
Chapter 4. General Checkout

17
Chapter 5. Using the Setup Utility

19
Chapter 6. Symptom-To-FRU Index

25
- Hard Disk Drive Boot Error
  25
- Power Supply Problems
  25
- POST Error Codes
  26
- Undetermined Problems
  26
Chapter 7. Locating Connectors, Controls and Components

27
Chapter 8. Replacing Hardware

31
- General Information
  31
- Replacing the Keyboard and Mouse
  32
- Removing the Computer Cover
  32
- Removing the Top Bezel
  33
- Removing the Front Bezel
  34
- Replacing the Power Supply Assemby
  35
- Replacing an Optical Drive
  36
- Replacing the M.2 Storage Drive
  37
- Replacing the 3.5-Inch Storage Drive
  38
- Replacing the Graphic Card
  39
- Replacing a Memory Module
  40
- Replacing the Wi-Fi Card
  41
- Replacing the Wi-Fi Antenna
  42
- Replacing the Heat-Sink and Fan Assembly
  44
- Replacing the Microprocessor
  45
- Replacing the Front Fan
  46
- Replacing the Rear Fan
  47
- Replacing the Motherboard
  48
Chapter 9. FRU Lists

51
Chapter 10. General Information

61
- Additional Service Information
  61

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