![](/images/backgrounds/133918/133918-4645x1.png)
Appendix
Troubleshooting
Overview
Operation problems can be due to a variety of causes. The first step in solving them is to make sure that all cables are securely attached and seated completely in their sockets.
In addition, updating the product’s firmware may solve problems that have been discovered and resolved since the prior version was released. If your product is not running the latest firmware version, we strongly recommend that you upgrade. See Chapter 6, The Firmware Upgrade Utility, for upgrade details.
Symptom | Possible Cause | Action |
|
|
|
Mouse and/or | Improper mouse | Unplug the cable(s) from the console port(s), |
Keyboard not | and/or keyboard | then plug it/them back in. |
responding. | reset. |
|
|
|
|
| CS1642 / CS1644 | Power off all devices on the installation (see |
| needs to be reset. | safety note, top of page 9); power off the |
|
| CS1642 / CS1644; wait five seconds; then |
|
| power up |
|
|
|
USB devices | USB ports need to | Unplug the device’s USB cable from the USB |
not responding. | reset. | port on the CS1642 / CS1644’s rear panel, |
|
| then plug it back in. |
|
|
|
| PC or OS does not | The CS1642 / CS1644 has a |
| support USB 2.0. | hub, so will not support PCs or OS that do not |
|
| support USB 2.0. |
|
|
|
|
| For OS that do not support USB 2.0, |
|
| keyboard and mouse functions can be reset |
|
| using the [F1] hotkey function. See Other OS |
|
| |
|
|
|
Device not | Windows timing | 1. Unplug the KVM cable from the com- |
recognized | problem. | puter’s USB port. |
(Windows). |
| 2. Go into Windows’ System Settings and |
|
| |
|
| remove the Unknown Device entry. |
|
| 3. Plug the KVM cable back in. Windows will |
|
| now recognize the device. |
|
|
|
DVI video card | DVI video card does | Some DVI video cards do not support hot |
not responding. | not support hot | plugging. Power off the PC; reconnect the |
| plugging. | DVI video card; power up the PC. |
|
|
|
37