Lenovo ThinkCentre M90a Pro Gen4 Manuals

Manuals and User Guides for Lenovo ThinkCentre M90a Pro Gen4. We have 2 Lenovo ThinkCentre M90a Pro Gen4 manuals available for free PDF download: Hardware Maintenance Manual, User Manual

Lenovo ThinkCentre M90a Pro Gen4 Hardware Maintenance Manual (92 pages)

Brand: Lenovo | Category: Desktop | Size: 27.01 MB

Table of Contents
3
About this Manual
5
Chapter 1. Important Safety Information

7
Chapter 2. Important Service Information

33
Chapter 3. Product Overview

35
- Front
  35
- Rear
  37
Chapter 4. Service Checkout and Symptom-To-FRU Index

39
- Service Checkout
  39
- Problem Determination Tips
  39
- Symptom-To-FRU Index
  40
- Hard Disk Drive Boot Error
  40
- Power Supply Problems
  41
- Beep Symptoms
  41
- POST Error Codes
  42
- Miscellaneous Error Conditions
  43
- Undetermined Problems
  45
- Recover from a BIOS Update Failure
  45
- Clear CMOS
  46
Chapter 5. Diagnostics

47
Chapter 6. Hardware Removal and Installation

51
- Handling Static-Sensitive Devices
  51
- Service Tool Kit
  51
- Major Frus and Crus
  52
- System Board
  56
- Removing and Installing Hardware
  57
- External Options
  57
- Computer Stand
  57
- Rear I/O Cover
  60
- System Board Shield
  61
- OSD Button and OSD Bracket
  62
- VESA Mount Bracket
  63
- Cover Presence Switch (Intrusion Switch)
  64
- Hard Disk Drive
  65
- Optical Drive
  65
- M.2 Solid-State Drive
  67
- Thunderbolt Card
  68
- Memory Module
  69
- Wi-Fi Card and Wi-Fi Card Shield
  70
- Card Reader Board
  70
- GPU Card
  71
- System Fan
  72
- Heat Sink
  73
- Microprocessor
  74
- System Board
  75
- Coin-Cell Battery
  76
- Integrated Camera and Microphone Module
  78
- Power Supply Assembly
  78
- Side I/O Bezel
  80
- Right Bezel
  80
- Internal Speakers
  81
- Main Frame
  82
- Wi-Fi Antennas
  83
- Front Decoration Cover
  84
- LCD Bracket and LCD Panel
  85
Chapter 7. Notices and Trademarks

89

Lenovo ThinkCentre M90a Pro Gen4 User Manual (62 pages)

Brand: Lenovo | Category: Desktop | Size: 13.56 MB

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Lenovo ThinkCentre M90a Pro Gen4 Manuals

Lenovo ThinkCentre M90a Pro Gen4 Hardware Maintenance Manual (92 pages)

Table of Contents

Chapter 1. Important Safety Information

Chapter 2. Important Service Information

Chapter 3. Product Overview

Chapter 4. Service Checkout and Symptom-To-FRU Index

Chapter 5. Diagnostics

Chapter 6. Hardware Removal and Installation

Chapter 7. Notices and Trademarks

Lenovo ThinkCentre M90a Pro Gen4 User Manual (62 pages)

Table of Contents

Chapter 1. Meet Your Computer

Chapter 2. Get Started with Your Computer

Chapter 3. Explore Your Computer

Chapter 4. Secure Your Computer and Information

Chapter 5. UEFI BIOS

Chapter 6. Diagnostics

Chapter 7. CRU Replacement

Chapter 8. Help and Support

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