Owners Manual
Table Of Contents
- Precision 5720 All-in-One Owner’s Manual
- Working on your computer
- Removing and installing components
- USB dongle-bay cover
- Back cover
- Memory module
- Hard drive
- System board shield
- M.2 PCIe SSD
- Memory fan
- Heat sink
- Processor
- Coin cell battery
- WLAN card
- Stand
- System fan
- Power supply unit
- Inner frame
- Built-in self test button
- Microphone
- I/O panel
- USB-dongle port
- Diagnostic light and button board
- Drive cage
- Converter board
- Speaker
- Power button board
- Media card reader
- Camera
- System board
- Display assembly
- Middle frame
- Speaker bezel
- Display panel
- Technology and components
- System setup
- Software
- Troubleshooting
- Technical specifications
- System specifications
- Memory specifications
- Video specifications
- Audio specifications
- Communication specifications
- Connectors
- Display specifications
- Storage specifications
- Port and connector specifications
- Power specifications
- Camera specifications
- Stand specifications
- Physical specifications
- Environmental specifications
- Contacting Dell
• O – Camera is not in use.
Dell Enhanced Pre-Boot System Assessment (ePSA)
diagnostic 3.0
For more details, see Dell EPSA Diagnostic 3.0.
LCD built in self test (BIST)
All-in-One (AIO) system supports LCD BIST similar to any other Dell systems that have BIST test implemented. It allows the user to isolate
the LCD during troubleshooting to determine which sub-system is at fault. The main dierence is the lack of an integrated keyboard scan
controller in the AIO. When BIST is initiated, an internal generated pattern from the LCD is emitted for user's observation. This pattern goes
by sequence through this pattern. Black-White-Red-Green-Blue or a White-Black-Red-Green-Blue where each pattern is emitted for 2-3
seconds. The following images display the pattern of the colors on the LCD:
Troubleshooting 105