Troubleshooting Procedures; General Technique; No Power - Supermicro SuperServer SYS-521E-WR User Manual

7.3 Troubleshooting Procedures

Use the following procedures to troubleshoot your system. If you have followed all of the
procedures below and still need assistance, refer to the
Returning Merchandise for Service
changing any non hot-swap hardware components.

General Technique

If you experience unstable operation or get no boot response, try:
1. With power off, remove all but one DIMM and other added components, such as add-on
cards, from the motherboard. Make sure the motherboard is not shorted to the chassis.
2. Set all jumpers to their default positions.
3. Power up. If the system boots, check for memory errors and add-on card problems.

No Power

•
Check that the power LED on the motherboard is on.
LEDPWR
•
Make sure that the power connector is connected to the power supply.
•
Check that the motherboard battery still supplies approximately 3VDC. If it does not,
replace it.
•
Check that the system input voltage is 100-120VAC or 180-240VAC.
•
Turn the power switch on and off to test the system
section(s) in this chapter.
JUIDB1
VGA
MH1
BT1
JBT1
CMOS CLEAR
MH15
MH6
MH9
Figure 7-3. Location of the MB Power LED
MH10
FAN6 FAN4 FAN3
FAN5
83
Chapter 7: Troubleshooting and Support
Technical Support Procedures
Power down
USB3/4(3.0)
LAN2 LAN1
IPMI_LAN
USB0/1
JNCSI1
JTPM
MH4
MH17
M.2 NVME
M.2-P
JRK1
MAC CODE
SAN MAC
BIOS LICENSE
CPU
FAN2 FAN1
or
the system before
COM1
MH2
USB2
JVRM1
JPI2C
MH8
MH7