Detailed Troubleshooting - American Dynamics SpeedDome Ultra 8 Installation And Service Manual

8. If using RS-422 network and an I/O board is
used, check comm. line connections by
pressing and holding data test switch SW1
(Figure 15) and observing nearby red (CR12)
and green (CR13) LEDs. These LEDs indicate
the following:
Comm. line correctly wired.
Constant green,
Blinking red
Constant green, "Data In -" shorted to ground.
Red off
Constant red, "Data In +/ -" wires reversed.
Blinking green
Blinking red, "Data In +" shorted to ground.
Green off
Both LEDs off "Data In +/ -" wires shorted or
open.
Figure 15. I/O board test switch and LED
locations
Yellow
(CR11)
Red
(CR12)
Green
(CR13)
SW1
SPEEDDOME ULTRA 8 CAMERA DOME
INSTALLATION AND SERVICE GUIDE
Green
(CR9)
9. Check the spring finger connector on the I/O
board by connecting a known good dome to the
base to verify contact between the spring
fingers and the CPU board (under cap). Does
dome produce video and respond to
commands?
YES Spring fingers may not have seated
properly. Reconnect housing and eyeball
assembly.
NO Replace I/O board.
If routine troubleshooting did not solve the
problem, the manufacturer strongly
recommends that you contact your sales
representative for repair instructions.
If you must perform detailed troubleshooting,
use extreme care when disassembling parts!
See Detailed Troubleshooting, next.

Detailed Troubleshooting

Use this procedure to determine if the problem is a
simple cable connection or a major component.
To perform this procedure, you must open the
housing and eyeball assembly. Refer to
"Disassembling the Dome" on page 19.
CAUTION:
• DO NOT use this procedure if the dome
functions but does not pan or tilt (see step 2 on
page 16).
• If routine troubleshooting did not solve the
problem, the manufacturer strongly
recommends that you contact your sales
representative for repair instructions. If you must
perform detailed troubleshooting, use extreme
care when disassembling parts!
• When shipping a base and I/O board assembly,
use a dust cover to protect the spring fingers.
• Connector screws on the I/O board are delicate.
DO NOT over tighten them! Use a 2.5mm
(0.1in) slotted screwdriver. Wider blade widths
can damage connectors.
• The dome contains electrostatic-sensitive PC
boards. Use a ground strap when handling
these boards.
18 of 30
8200-0600-03, REV. B