American Dynamics SpeedDome Optima LT Installation And Service Manual page 28

Procedure
Perform steps in sequence until the problem is
corrected.
1. Check the video on the monitor.
No video? Go to step 2.
Is the contrast or color off?
YES: Send the dome (indoor chassis) back to the
National Repair Center.
NO: Go to step 2.
Does the video roll when switching between
monitors?
YES: Use the video controller or switcher to
synchronize the video vertical sync phases of all
domes to the ac line. For specific instructions,
see the installation and service manual for the
controller or switcher.
NO: Go to step 2.
2. Check ac power and video connections at
the J-box.
Is 24Vac absent? Is a video signal absent?
YES: Correct problem at J-box.
NO: Go to step 3.
3. Verify that the video cable is securely
connected J1 (video jack) on the Unicard
board (Figure Chapter 3-1).
Is the cable disconnected?
YES: Connect the cable.
NO: Go to step 4.
Figure Chapter 3-1. Video jack on the Unicard
board
Unicard board
J1-Video
SPEEDDOME LT
4. Check dome address switches (Figure
Chapter 3-2).
Are they set correctly?
YES: If the dome still doesn't respond, then the
problem is likely in the dome. Ship the dome to
the NRC. If you must repair the dome, continue
troubleshooting to identify the task that removes
the faulty component.
NO: Set the correct address. Go to step 5.
Figure Chapter 3-2. Dome address switches
Unicard board
Board Edge
5. Isolate the problem to the dome.
If another housing is nearby, detach the dome and
reinsert it to the other housing. Does it display video
or respond correctly to commands?
YES: Then the problem is likely the cable
connections to the Unicard board. Go to step 6.
NO: Send the dome back to the National Repair
Center.
3-3
SERVICE
Address
MSB LSB
Switches
1 1
SW2 SW1
9 9