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18 Pelco Manual C1498M-B (7/99)
3. Move the joystick up or down to position the cursor beside Scan Speed deg/s.
4. Press the Iris Open button. The cursor moves to the right beside the current number of
degrees.
5. Move the joystick up or down to toggle through the number of degrees (1-40) until you
reach the number you want. (If set on a low number, the scan will appear to barely
move but is still functioning.)
6. SELECT – Press the Iris Open button to select your choice.
CANCEL – Press the Iris Close button if you do not want to change the setting.
TROUBLESHOOTING
Symptom: Unit or fan does not operate.
1. Make sure your controller is trying to communicate with the unit and not another camera.
2. Turn off power.
3. Remove the lower dome:
In-Ceiling Models – Insert the flat blade of a screwdriver into one of the slots on
the trim ring and twist the screwdriver to pop loose the trim ring and lower dome.
Pendant Models – Remove the two screws that hold the trim ring to the back box.
Insert the flat blade of a screwdriver into one of the slots on the trim ring and twist the
screwdriver to free the lower dome from the back box.
4. Remove the dome drive: Push in on the green drive eject tab on the side of the dome
drive and gently rock the dome drive to release the latch. When the green latch
releases, pull the dome down.
5. Do one of the following:
• If your problem was that the unit would not operate: Proceed to step 6.
• If your problem was that the fan would not operate: Make sure the connector for
the fan is fully seated. Replace the dome drive. Turn on power. If the fan does not
operate, return the back box electronic assembly and dome drive to the factory
for repair. Refer to the
Back Box Electronic Assembly Removal
section.
6. Turn on power.
7. If the red power LED on the door of the interconnect circuit board in the back box does
not light, turn off power.
a. Open the door to the interconnect circuit board and check the fuse (located next
to the fan). If bad, replace it (Pelco part number FUS1.6-5X20FAST). This is a
1.6-ampere fuse, 5 x 20 mm, fast blow.
b. If the fuse is good, turn on power and use a voltmeter to check if 24 VAC is getting
to the power connector on the interconnect circuit board (located next to the fuse).
c. If there is 24 VAC to the power connector, turn off power and return the back box
electronic assembly to the factory for repair. Refer to the
Back Box Electronic
Assembly Removal
section.
d. If there is no voltage at the power connector, check your power supply.
NOTE:
The dome drive con-
tains no user-serviceable
parts. If there is a problem
with the dome drive, return it
to Pelco as a complete unit
for servicing.