10 C3462M (9/09)
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 1-800-289-9100 (USA and Canada)
or +1-559-292-1981 (international) for assistance. Be sure to have the serial number available when calling.
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
Dome does not start properly
after installation.
The circuit board fuse may
need to be replaced.
Check the fuse on the circuit board inside the back box for
continuity. Replace the fuse if needed.
The back box may not be
receiving proper voltage.
Check the wiring with a volt meter to ensure that the back box is
receiving proper voltage.
Dome starts correctly, but you
do not have accurate control
.
Switch settings on the dome
drive are set incorrectly.
Check the signal with a volt meter or an oscilloscope.
NOTE: This step will not apply if you are using Coaxitron control.
Ensure that the switch settings on the dome drive are set correctly
(refer to Switch Settings on page 3.)
Ensure that the proper back box wiring was used and that the
polarity of wiring is correct.
No video is displayed. Power is not connected. Check the power connector.
Video cable is not connected. Check the video connector.
Video UTP cable is not
connected.
Check the UTP connector.
TXB-IP module is not inserted
properly in the back box.
If you are using a Spectra IV IP dome system, reinstall the TXB-IP
module. Make sure the pins on the module are inserted correctly.
Spectra IV information
(model, firmware, Pelco P and
Pelco D protocol addresses,
and communication settings)
does not appear after the
configuration cycle.
The unit cannot complete its
configuration cycle.
Ensure that nothing is physically obstructing the pan and tilt
movement of the dome drive.
The displayed video is
scrambled.
Video UTP wires are
incorrectly installed in the
back box.
Verify that the video UTP cable is wired correctly to the UTP
connector on the back box circuit board. The blue wire should be
connected to the positive terminal, and the gray wire should be
connected to the negative terminal (refer to the installation
manual on the resource disc).
