Hofmann geodyna 7850p Mode D'emploi page 144

144
Trouble shooting
Gauge arm inputs differ from wheel dimensions
stated on rim or tyre.
1. Did you position the gauge arm correctly?
• Refer to Chapter 5.6.1.
2. Check the offset input of the gauge arm by entering
manually.
• Refer to the scale on the gauge.
• If not identical, proceed with step 4.
3. Check the diameter of the spot on the rim where
the diameter has been measured.
• If not identical, proceed with step 4.
4. Calibration is required.
• Have the gauge arm calibrated.
Balancing results are unreliable.
1. The balancer may not be installed properly.
• Make sure the unit rests on its 3 feet only.
• Make sure the floor is not relaying shocks, for
example from trucks passing close to the unit.
2. The wheel may be mounted incorrectly.
• Check the hub, cones and adapters for play.
• Use appropriate spacers to eliminate play.
• Perform measuring unit calibration.
3. The electronics are faulty.
• Call service team.
A mode or indicator is continuously shown on the
screen.
1. A power dip may have occurred.
• Switch off the unit.
• Wait for 20 seconds, switch on the unit.
• Call service team.
Wheel lifter jammed.
1. The wheel lifting system is not activated.
• Press the control pedal to activate the lifter (
2. The electronics are faulty.
• Call service team.

5.1.1).