Troubleshooting
To use your dome, refer to the installation and operation/configuration manuals on the resource disc.
If the following instructions fail to solve your problem, contact Pelco Product Support at
Do not try to repair the unit yourself. Leave maintenance and repairs to qualified technical personnel only.
Table D. Troubleshooting the Spectra IV Dome System
Problem | Possible Causes | Suggested Resolution |
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Dome does not start properly | The circuit board fuse may | Check the fuse on the circuit board inside the back box for |
after installation. | need to be replaced. | continuity. Replace the fuse if needed. |
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| The back box may not be | Check the wiring with a volt meter to ensure that the back box is |
| receiving proper voltage. | receiving proper voltage. |
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|
Dome starts correctly, but you | Switch settings on the dome | Check the signal with a volt meter or an oscilloscope. |
do not have accurate control. | drive are set incorrectly. | NOTE: This step will not apply if you are using Coaxitron control. |
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| Ensure that the switch settings on the dome drive are set correctly |
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| (refer to Switch Settings on page 3.) |
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| Ensure that the proper back box wiring was used and that the |
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| polarity of wiring is correct. |
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|
No video is displayed. | Power is not connected. | Check the power connector. |
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| Video cable is not connected. | Check the video connector. |
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| Video UTP cable is not | Check the UTP connector. |
| connected. |
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| If you are using a Spectra IV IP dome system, reinstall the | |
| properly in the back box. | module. Make sure the pins on the module are inserted correctly. |
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|
Spectra IV information | The unit cannot complete its | Ensure that nothing is physically obstructing the pan and tilt |
(model, firmware, Pelco P and | configuration cycle. | movement of the dome drive. |
Pelco D protocol addresses, |
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|
and communication settings) |
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does not appear after the |
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configuration cycle. |
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The displayed video is | Video UTP wires are | Verify that the video UTP cable is wired correctly to the UTP |
scrambled. | incorrectly installed in the | connector on the back box circuit board. The blue wire should be |
| back box. | connected to the positive terminal, and the gray wire should be |
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| connected to the negative terminal (refer to the installation |
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| manual on the resource disc). |
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10 | C3462M (9/09) |