Personal Computer User Manual
Table Of Contents
- System Specifications
- System Utilities
- Machine Disassembly and Replacement
- Disassembly Requirements
- General Information
- External Module Disassembly Process
- Main Unit Disassembly Process
- Main Unit Disassembly Flowchart
- Removing the Switch Cover
- Removing the Keyboard
- Removing the Antenna
- Removing the LCD Module
- Removing the Upper Cover
- Removing the Touch Pad Bracket
- Removing the Finger Print Reader
- Removing the Launch Board
- Removing the Speaker Module
- Removing the Switch Board
- Removing the Touch Pad Board
- Removing the I/O Board
- Removing the Bluetooth module
- Removing the Modem Module
- Removing the Main Board
- Removing the Thermal Module
- Removing the CPU
- Removing the CPU Fan
- Removing the HDMI Module
- LCD Module Disassembly Process
- LCD Module Reassembly Procedure
- Main Module Reassembly Procedure
- Replacing the CPU
- Replacing the Thermal Module
- Replacing the CPU Fan Module
- Replacing the HDMI Module
- Replacing the Mainboard
- Replacing the I/O Board
- Replacing the Bluetooth Board
- Replacing the Modem Module
- Replacing the Finger Print Reader
- Replacing the Touch Pad Bracket
- Replacing the Launch Board
- Replacing the Switch Board
- Replacing the Antenna Cables
- Replacing the Speaker Module
- Replacing the Keyboard
- Replacing the Switch Cover
- Replacing the WLAN Module
- Replacing the Hard Disk Drive Module
- Replacing the DIMM Modules
- Replacing the ODD Module
- Replacing the Lower Covers
- Replacing the Express and SD Card Trays
- Troubleshooting
- Common Problems
- Power On Issue
- No Display Issue
- Random Loss of BIOS Settings
- LCD Failure
- Built-In Keyboard Failure
- Touchpad Failure
- Internal Speaker Failure
- Internal Microphone Failure
- HDD Not Operating Correctly
- ODD Failure
- Modem Function Failure
- Wireless Function Failure
- EasyTouch Button Failure
- Thermal Unit Failure
- External Mouse Failure
- Other Failures
- Intermittent Problems
- Undetermined Problems
- POST Codes Tables
- Common Problems
- Jumper and Connector Locations
- FRU (Field Replaceable Unit) List
- Model Definition and Configuration
- Test Compatible Components
- Online Support Information
- Index
130 Chapter 4
Power On Issue
If the system doesn’t power on, perform the following actions one at a time to correct the problem. Do not
replace a non-defective FRUs:
Computer Shutsdown Intermittently
If the system powers off at intervals, perform the following actions one at a time to correct the problem.
1. Check the power cable is properly connected to the computer and the electrical outlet.
2. Remove any extension cables between the computer and the outlet.
3. Remove any surge protectors between the computer and the electrical outlet. Plug the computer directly
into a known good electrical outlet.
4. Disconnect the power and open the casing to check the Thermal Unit (see “Thermal Unit Failure” on page
142) and fan airways are free of obstructions.
5. Disable the power management settings in the BIOS to ensure they are not the cause of the problem (see
“Boot” on page 33).
6. Remove all external and non-essential hardware connected to the computer that are not necessary to
boot the computer to the failure point.
7. Remove any recently installed software.
8. If the Issue is still not resolved, see “Online Support Information” on page 185.