Appendix b — troubleshooting – Speco Technologies CVC-927PTZ User Manual
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Appendix B — Troubleshooting 
 
If problems occur, verify the installation of the camera with the instructions in this manual and 
with other operating equipment. Isolate the problem to the specific piece of equipment in the 
system and refer to the equipment manual for further information. 
 
Problem
Possible Solution
No video.
Verify that power is connected to all pieces of 
equipment in the system. 
Verify that the power switches are in the ON position. 
Check the video connections 
(see Figure 4). 
Poor video quality.
Check that the BNC connectors are inserted properly. 
Check the voltage level of the dome camera. 
Check that 8-pin cable is connected to the Keyboard. 
8-pin cable for Keyboard is proprietary. Cable for video 
is shielded. 
Dome cameras lose their positions.
Reset the cameras using the Dome configuration 
menus. 
Check that the dome cameras are inserted properly in 
the base. 
Check the voltage level of the dome camera. 
Camera number does not match the 
multiplexer number. 
Check the camera ID and insert the BNC cable into 
the proper input of the multiplexer. 
Picture is torn when switching
Check Line Lock setting and adjust phase of L/L (see 
page 22) 
 
 
 
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