Troubleshooting Procedures; General Technique; No Power - Supermicro SuperServer 420GH-TNGR 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.
PWR_LED
•
Make sure that the power connector is connected to the power supply.
•
Check that the motherboard battery still supplies ~3VDC. If it does not, replace it.
•
Check that the system input voltage is 100-120v or 180-240v.
•
Turn the power switch on and off to test the system.
section(s) in this chapter.
JPL4
LAN
CTRL
JUID1
PWR_
LED
CPU1
Figure 7-3. Location of the MB Power LED
SATA5
BMC
UID_LED
JCOM1
JL1
JUSB2
JVGA1
94
Chapter 7: Troubleshooting and Support
Technical Support Procedures
Power down
JPL6
JVRM2
X12DPG-U6
BMC CODE
REV:1.01
BIOS LICENSE
BAR CODE
DESIGNED IN USA
JSD2
JRK1
JTPM1
BT1
PCH
JCOMDBG1_JWD1
JBT1
or
the system before
JPL5
CPU2
JPRG1
M.2-HC1 2280
M.2-HC2 2280
JVRM1
JUSB3
22110
22110