Operating Instructions MA 53Geba_MA53_e_13a.doc 7 851 430/3 11/113 Getting started3.1 Unpacking your instrumentYour MA 53 was carefully inspected and packed for shipping. However, it is agood practice to thoroughly inspect the outside of the shipping box for signsof damage. If any damage is noted, please notify the carrier immediately.Carefully remove the instrument from the shipping box. Remove the plasticbag from the instrument and inspect the case for any damage.Notify the carrier immediately if any mechanical damage is noted. This willassure that a proper claim is made. Save all packing material so the claimadjuster can inspect it as well. Notify your dealer or MAICO when the adjusterhas completed the inspection.SAVE ALL THE ORIGINAL PACKING MATERIAL AND THE SHIPPINGCONTAINER SO THE INSTRUMENT CAN BE PROPERLY PACKED IF IT NEEDS TOBE RETURNED FOR SERVICE OR CALIBRATION.All accessories are already packaged in the compartment connected with theMA 53. Please check that all accessories listed below are received in goodcondition. If any accessories are missing or damaged, immediately notify yourdealer or MAICO.Standard accessories:- 1 Headphone DD 45- 1 Bone conduction receiver B 71 with headband- 1 Patient response switch- 1 power cable- 1 microphone with stand (only for export outside USA)- 1 audiogram form (50 sheets)- 1 monitor headset with microphone (USA only)- 5 sound room cords (USA only)Calibration of the device:The instrument, headphones, bone conduction receiver as well as the optionalinsert phone and loudspeaker match one another and have the same serialnumber (e.g. 6631520). Because they have been calibrated with thisparticular instrument, use of other transducers is not allowed. If one of theacoustic transducers is replaced, the instrument must be recalibrated.The use of non-calibrated audiometers leads to incorrectmeasurements!