Service and repairsItem no. 10301062, Revision 09 33 ( 36 )HF spindle becomes loud Cause TroubleshootingTool unsuitableq Only use balanced tools.(Also see the "Tools for high speed cutting [} 27]" section.)q Check the tool for damage.q Replace damaged tool.HF spindle is notclamped truly or is dis-tortedq Only use spindle holders from the original accessories orholders produced according to the tolerances specified byNakanishi Jaeger GmbH.HF spindle clampedtoo tightlyq Only tighten the clamping screws of the spindle holdermanually.q Do not use technical aids to clamp the HF spindle.Bearings damaged q Contact Nakanishi Jaeger GmbH service.No automatic tool change Cause TroubleshootingContaminationq Remove all contamination between the tool taper andshaft of the HF spindle.(Observe all points in the “Tool change [} 24]” and “Mainte-nance [} 28]” sections.)Lack of pressureq Check the connections for compressed air.q Check the hoses for compressed air.q Check the pneumatic circuit.q Check the setting of the compressed air for the toolchange.(Also see the "Setting values [} 22]" section.)Sensor does not send anysignalsCause TroubleshootingNo connection to sen-sor q Check the lines and connections.