Chapter 4: Troubleshooting
4. Troubleshooting
4.1 Problems/Causes/Solutions
Table
Problem | Cause | Solution |
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All LEDs on the local | The local unit is not | 1. Make sure that the USB connection between the |
unit are off. | receiving enough power | local unit and host computer is properly installed. |
| from the USB port or the |
|
| (optional) local unit AC | 2. Move the USB connector to another USB port on the |
| adapter. | host computer. |
|
|
|
All LEDs on the remote unit | The remote unit is not receiving | 1. Make sure that the AC power adapter is properly |
unit are off. | power from the AC adapter. | connected to the remote unit. |
|
| 2. Check that the AC adapter is connected to a live source |
|
| of electrical power. Check that the remote unit power |
|
| LED is lit. |
Link LEDs on the local unit | There is no connection between | 1. Make sure that CAT5 cable is connected between |
and remote unit are off. | the local unit and the | the local unit and the remote unit. CAT5 or better |
| remote unit. | UTP with a |
|
| and |
|
| 2. If the CAT5 cable is defective, connect a short CAT5 |
|
| patch cord between the local unit and the remote |
|
| unit to determine if the original CAT5 cable is defective. |
|
|
|
Link LED on the local | 1. The host computer is not | 1. Disconnect all USB devices from the remote unit. |
unit is on, Host LED on the | powered on. |
|
local unit is off. |
| 2. Disconnect the local unit from the computer. |
| 2. The remote unit is not |
|
| connected to the computer | 3. Disconnect the remote unit from the AC power adapter. |
| (when used with the |
|
| optional local unit AC | 4. Reconnect the local unit to the computer. |
| adapter). |
|
| 3. The computer does not | 5. Reconnect the remote unit to the AC power adapter. |
| support USB hubs. |
|
|
| 6. In the Universal Serial Bus Controllers section of Device |
| 4. The extender is | Manager, check that the extender is recognized as a |
| malfunctioning. | “Generic USB Hub.” |
|
|
|
The extender units were | The remote unit is in | 1. Recover/resume the operating system from suspend/ |
working, but the host LED | suspend mode. The operating | standby mode (see your operating system’s |
on the local/remote | system may put the extender | documentation). |
units are suddenly blinking. | in suspend mode when |
|
| the computer is put into a | 2. Attach a USB device to the extender. |
| suspend/standby state or when |
|
| no USB devices are attached. |
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Page 13 |