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22 PELCO Manual C460M-E (7/95)
9.2 AUTO/RANDOM SCAN OPERATION
The pan/tilt will function in the Auto/Random mode
with the addition of the appropriate PELCO control
system. The pan/tilt has no additional limit switches or
relays for auto scan operation and is, therefore, only
compatible with current sensing auto/random type cir-
cuits employed in our control systems.
10.0 MAINTENANCE
10.1 RECOMMENDED EQUIPMENT
AND TOOLS
1. Voltmeter or Ohmmeter
2. Allen Wrench Set
3. Wrench Set
4. Flat Blade and Phillips Head Screwdrivers
5. Pliers, Long Nose
10.2 SERVICE TIPS
Some common problems encountered with pan/tilt sys-
tems include miswiring, overloading, and not using the
units for the correct application. Should a failure occur,
it is recommended that the following procedures be
used.
1. If the pan/tilt ceases to operate, turn the control unit
off and remove the AC cord from the outlet.
2. Check the fuse in the control unit using either a
voltmeter or ohmmeter. If open (blown), replace
with the proper recommended fuse.
3. Replace the AC cord in the outlet and turn the
control on. If the fuse continues to open (blow),
turn the unit off.
4. Check the control cable between the control unit
and pan/tilt for shorts, high resistance, or opens.
5. If the control cable is found to be good, replace the
connector to the control unit, leave the connector
off the pan/tilt, and replace the fuse.
6. Operate the control unit when it is disconnected
from the pan/tilt. If the fuse continues to “blow” the
fault is in the control. Refer to the appropriate
service manual for the control being used.
7. Check the wiring harness in the pan/tilt for shorts.
8. If the wiring harness is found to be good, then the
problem is internal to the unit; consult factory.
Refer to Figures 16 through 18, if necessary.