Troubleshooting
Basic troubleshooting
Only trained APC technicians should open the
Redundant Switch for repair.
Electrical
Hazard
Problem | Possible Cause | Corrective Actions | |
|
|
| |
|
| Use a lamp with an | |
|
| incandescent bulb to test | |
|
| the AC power supply to | |
|
| the Redundant Switch. If | |
The Redundant | Very low utility | the bulb lights very dimly | |
Switch will not | voltage, or no | or not at all, have the | |
turn on. | utility voltage. | utility voltage checked. | |
|
| Ensure that the AC cables | |
|
| are properly connected | |
|
| between the Redundant | |
|
| Switch and the UPSs. | |
|
|
| |
|
| Ensure that all cables | |
|
| connections are securely | |
The server |
| connected. | |
cannot | A cabling | If there is still no | |
communicate | communication, connect | ||
problem or | |||
with the | the server directly to a | ||
internal | |||
attached UPS | UPS. If you can establish | ||
Redundant | |||
through the | communication by this | ||
Switch fault | |||
Redundant | direct connection, there | ||
| |||
Switch |
| is an internal Redundant | |
|
| Switch fault. Contact | |
|
| APC Customer Support. | |
|
|
| |
| An Internal, |
| |
| automated self- |
| |
All Redundant | test failure | See “Obtaining service” on | |
Switch LEDs | occurred; the | ||
page 25. | |||
are flashing | Redundant | ||
| |||
| Switch is |
| |
| defective. |
| |
|
|
|
For computer interface port specifications, see the APC Web
site, www.apc.com.
18 | APC Redundant Switch: Installation and Operation Manual |
