Supermicro SuperServer SYS-122H-TN User Manual page 146

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
page 152 section in this chapter. Always disconnect the AC power cord before adding,
changing or installing any non hot-swap hardware components. If the below steps do not fix the
setup configuration problem, contact your vendor for repairs.
Before Power On
1. Make sure that there are no short circuits between the motherboard and chassis.
2. Disconnect all ribbon/wire cables from the motherboard, including those for the
keyboard and mouse.
3. Remove all add-on cards.
4. Install the processor (making sure it is fully seated) and connect the front panel
connectors to the motherboard.
No Power
1. Make sure that there are no short circuits between the motherboard and the chassis.
2. The battery on your motherboard may be old. Check to verify that it still supplies
approximately 3 VDC. If it does not, replace it with a new one.
No Video
1. If the power is on, but you do not have video, remove all add-on cards and cables.
2. Remove all memory modules and turn on the system (if the alarm is on, check the specs
of memory modules, reset the memory, or try a different one).
System Boot Failure
If the system does not display Power-On-Self-Test (POST) or does not respond after the power
is turned on, do the following:
1. Remove all components from the motherboard, especially the DIMMs. Power on the
system and check if the power-on LED and the BMC Heartbeat LED are on, and system
fans are spinning.
SuperServer SYS-122H-TN: Troubleshooting and Support
"Technical Support Procedures" on
146