Lenovo 90H9 Manuals

Lenovo 90H9 Manuals

Manuals and User Guides for Lenovo 90H9. We have 1 Lenovo 90H9 manual available for free PDF download: Hardware Maintenance Manual

Lenovo 90H9 Hardware Maintenance Manual

Lenovo 90H9 Hardware Maintenance Manual (72 pages)

Brand: Lenovo | Category: Desktop | Size: 21.88 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
  10
- Safety Inspection Guide
  11
- Handling Electrostatic Discharge-Sensitive Devices
  12
- Grounding Requirements
  13
- Safety Notices
  13
Chapter 3. General Information

17
- Specifications
  17
Chapter 4. General Checkout

19
Chapter 5. Using the Setup Utility

21
Chapter 6. Symptom-To-FRU Index

29
- Hard Disk Drive Boot Error
  29
- Power Supply Problems
  29
- Additional Service Information
  30
- POST Error Codes
  30
- Undetermined Problems
  31
Chapter 7. Locations

33
- Identifying Internal Components
  33
- Identifying Parts on the System Board
  36
Chapter 8. Replacing Hardware

39
- General Information
  39
- Cleaning Rear Dust Screen
  40
- Replacing the Keyboard and Mouse
  41
- Removing the Computer Cover
  41
- Removing the Computer Cover II
  42
- Removing the Front Bezel
  43
- Cleaning Front Dust Screen
  44
- Replacing a Memory Module
  45
- Replacing a Hard Disk Drive
  46
- Replacing an Optical Drive
  47
- Replacing the Microprocessor Fan Assembly
  48
- Replacing the Rear System Fan
  49
- Replacing a Front Fan
  50
- Replacing the Power Supply
  52
- Replacing the Wi-Fi Card
  53
- Removing the Top Cover
  54
- Replacing a Graphics Card
  56
- Replacing the CPU
  57
- Replacing the Motherboard
  61
- FRU Lists
  62
Chapter 9. General Information

69
- Additional Service Information
  69

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