Troubleshooting Outdoor Domes - American Dynamics ADODHCL Installation And Service Manual

Troubleshooting Outdoor
Domes
Perform the following procedures if one of the
following symptoms occur:
Dome does not respond to commands
Fans do not turn
Picture grainy or discolored
Poor video
Ice forms on bubble.
Dome Does Not Respond to
Commands
Follow steps until the problem is corrected. See
page 16 to order parts.
1. Disconnect dome from base and examine
address switches.
Are they set correctly?
YES: Continue.
NO: Set correct address and reconnect
housing and eyeball assembly.
2. Verify power is reaching housing.
Press and hold switch SW2 on environmental
PC board and observe the green (ac power)
LED. Does green LED glow steadily?
YES: Reconnect housing and eyeball
assembly and continue.
NO: Check power at J-box and ac cable
connections at connector P7 on other side
of environmental PC board. If these items
are OK, replace environmental PC board.
Connector P7 pin outs
Pin Color Description
1 N/A 24 Vac
2 N/A Common
3 N/A 24 Vac
CAUTION: Screws on ac connector are
delicate. DO NOT over tighten them! Use a
2.5mm (0.1") slotted screwdriver. Wider
blade widths can damage connectors.
AD DELTADOME OUTDOOR HOUSING
8000-2616-04, Rev. B
3. Verify data is reaching housing.
SENSORNET or RS422: Press and hold switch
SW2 on environmental PC board and observe
yellow (comm.) LED. Yellow LED should blink
(SensorNet) or glow steadily (RS422). For test
switch location, see Figure 12.
To verify RS422 connections at connector P1,
press and hold data test switch SW1 on
environmental PC board. For test switch
location, see Figure 12. Observe nearby red
and green LEDs; they indicate the following:
Constant green, RS422 line is correctly
Blinking red wired.
Constant green, RS422 "Data In –" is
No red shorted to ground.
Constant red, "Data In + /–" wires are
Blinking green reversed.
Blinking red, "Data In +" is shorted to
ground.
Green off
Both LEDs off "Data In +/–" wires are
shorted or open.
P1 pin outs:
Manchester data connections
Pin Color Designation
1-4 — Not used.
5 Black Manchester (+)
6 White Manchester (–)
RS422 Data connections
Pin Color Designation
1 Orange RS422 Data In High (+)
2 Green RS422 Data In Low (–)
3 Yellow RS422 Data Out High (+)
4 Brown RS422 Data Out Low (–)
5-6 — Not used.
INSTALLATION AND SERVICE GUIDE 13