CONTROL UNIT
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11
The Control Unit should be checked and maintained every 3 months to ensure it is operating
correctly.
Extended use of the Control Unit without recalibration can cause the Control Units to become
misaligned with the screen. Calibrate the Control Units once every 3 months to ensure correct
operation. Enter the Test Menu and select “Calibration” and follow the on-screen instructions. For
more information on this test, see Chapter 9-6.
If the Control Unit malfunctions, check Chapter 14 and/or 15 for detailed tests/procedures to follow to
see if the issue can be resolved.
If the problem cannot be xed by following advice and instructions contained within this Manual,
contact the distributor or point of purchase who will advise on repair or replacement of the Unit.
11-2MAINTAINING THE CONTROLLER
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