- Notes, cautions, and warnings
- Working on your computer
- Major components of your system
- Technology and components
- Disassembly and reassembly
- SD card
- SSD door
- Secondary M.2 solid-state drive
- Base cover
- Battery
- Solid State Drive
- Secondary memory module
- SIM card
- WLAN card
- WWAN card
- Keyboard lattice
- Keyboard
- Primary memory module
- Heat sink
- Power-adapter port
- Power button board
- Power button board with fingerprint reader
- Inner frame
- Smart-card reader
- Touchpad button
- SD card reader
- Power button
- Power button assembly with fingerprint reader
- GPU power cable
- System board
- GPU card
- Speaker
- Middle cap
- Display assembly
- Palm rest
- Display bezel
- Display panel
- Display hinges
- Camera
- P-sensor board
- Display cable
- Display back cover
- Troubleshooting
- Getting help
Precision 7550 Service Manual
System board built-in self-test (M-BIST)
About this task
Steps
- Press and hold both the M key and the power button to initiate M-BIST.
- The battery-status light illuminates in amber when there is a system board failure.
- Replace the system board to fix the issue.
NOTE:The battery status LED does not illuminate if the system board is functioning properly.
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