No Display On The Monitor; Table 4-3: No Display On The Monitor Checklist - PictureTel Concorde 4500 Servicing Manual

No Display on the Monitor

Table 4-3: No Display on the Monitor Checklist

If you have these
symptoms...
No video image.
The following table summarizes the corrective actions that you can
follow if your monitor displays no image.
1. Make sure that your system is not in standby mode by
pressing the VIEW FAR END button on the keypad.
If your system is in standby mode, pressing this button
makes the video image reappear.
2. Make sure that the power switches for the monitor,
electronics module, and cart are pressed to 1 (on).
3. Verify that you have selected a source that is connected and
powered-on for video display.
4. Make sure that ON/STANDBY on the monitor is pressed in.
5. Make sure that the power cable from the electronics module
to the monitor is securely plugged in.
6. Make sure that the video cable from the Video board to the
monitor is securely plugged in.
7. Make sure that the monitor is set to Video 1 or Ext 1 video
mode.
8. Isolate the problem by connecting an RCA cable from the
camera module directly to the monitor:
If the monitor displays video, the problem is in the
electronics module.
If the monitor does not display video, the problem is
with the camera module, monitor, or cable.
9. Isolate the problem to the camera module by having the far-
end site call you and report if they see the image from your
video source.
Basic Troubleshooting Procedures
Do this...
4-9