Troubleshooting of Regular Malfunctions 13-1
13 Troubleshooting of Regular
Malfunctions
13.1 Troubleshooting When System Can’t Be
Powered on
13.1.1 Module or Board Related
Front-end power main board PCBA
Front-end power auxiliary board PCBA
Front-end power board PCBA
Back-end motherboard PCBA
13.1.2 Key Points Supporting Troubleshooting
Key Points Supporting Troubleshooting
Power-on status indicator
Backlight of the power button
12V, 5V, 3.3V, located on IO board
13.1.3 Troubleshooting When System Can’t Be Powered on
Malfunction on the AC-DC
power