Lenovo 253725U Manuals

Manuals and User Guides for Lenovo 253725U. We have 2 Lenovo 253725U manuals available for free PDF download: Hardware Maintenance Manual, Brochure

Lenovo 253725U Hardware Maintenance Manual

Lenovo 253725U Hardware Maintenance Manual (204 pages)

User Manual

Brand: Lenovo | Category: Laptop | Size: 9.63 MB

Table of Contents

Table of Contents
5
About this Manual

7
Safety Information

9
Important Service Information

47
- Strategy for Replacing Frus
  47
- Strategy for Replacing Frus for CTO, CMV, and GAV
  49
  - Product Definition
    49
  - FRU Identification for CTO, CMV, and GAV Products
    49
General Checkout

51
- What to Do First
  52
- Checkout Guide
  53
- Power System Checkout
  59
Related Service Information

63
- Restoring the Factory Contents by Using Recovery Disc Set
  63
- Passwords
  64
  - Power-On Password
    65
  - Hard-Disk Password
    65
  - Supervisor Password
    65
  - How to Remove the Power-On Password
    65
  - How to Remove the Hard-Disk Password
    66
- Power Management
  68
  - Screen Blank Mode
    68
  - Sleep (Standby) Mode
    68
  - Hibernation Mode
    69
- Symptom-To-FRU Index
  70
  - Numeric Error Codes
    70
  - Error Messages
    74
  - Beep Symptoms
    75
  - No-Beep Symptoms
    75
  - LCD-Related Symptoms
    76
  - Intermittent Problems
    77
  - Undetermined Problems
    77
  - Copyright Lenovo
    79
Status Indicators

79
Fn Key Combinations

83
FRU Replacement Notices

87
- Screw Notices
  87
- Retaining Serial Numbers
  88
Removing and Replacing a FRU

91
Locations

157
- Front View
  157
- Rear View
  159
- Bottom View
  160
Parts List

161
- Overall
  162
- LCD Frus
  178
- Keyboard
  186
- Miscellaneous Parts
  187
- AC Adapters
  189
- Power Cords
  190
- Recovery Discs
  191
- Common Service Tools
  199
Notices

201
- Trademarks
  202

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Lenovo 253725U Brochure

Lenovo 253725U Brochure (4 pages)

Brochure

Brand: Lenovo | Category: Laptop | Size: 0.79 MB

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