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MA 42
Service Manual

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Содержание MA 42

Страница 1: ...MA 42 Service Manual...

Страница 2: ...Assigment 11 2 4 Setup in a Sound Booth 12 2 5 Establishing a Connection to a PC Printer or an External Audio Device 13 Maintenance Cleaning and Disinfection 14 3 1 Maintenance 14 3 2 Cleaning and Di...

Страница 3: ...eas of possible confusion and avoid potential problems during system operation 1 3 General information We continuously strive to improve our products and their performance hence the specifications in...

Страница 4: ...round the display Some of the function keys behave differently depending on how long they are pressed Quick Select Press briefly Selects directly e g Advanced Select Press and hold for 2 s opens selec...

Страница 5: ...t to change to a higher frequency SRT test Wave only to select the next word WRS test to enter a correct answer 5 keys Tone test to change to a lower frequency SRT test Wave only to select the previou...

Страница 6: ...ored value If more than 1 value has been stored before a Delete point window opens Delete a value using the Control Dial and the key Table 3 Navigation Symbol Select Function Quick Select to open the...

Страница 7: ...rayed out Quick Select to change Tone and Noise left right channel Advanced Select to select Tone or Noise for the left OR right channel only The selection of the other channel will not change NOTE Th...

Страница 8: ...one masking transducer is automatically selected for the other ear By press and hold for 2 s the opposite transducer can be changed between Phone and Insert Speaker to select loudspeaker for sound fie...

Страница 9: ...alk Back Allows you to hear the patient through the internal speaker or monitor headset via an optional talk back microphone Increase decrease the volume or set the function off by using the Control d...

Страница 10: ...al speaker or monitor headset via an optional talk back microphone Increase decrease the volume or set the function off by using the Control dial and the Key The volume dial on the monitor headset mus...

Страница 11: ...vel 0 VU Max input level 0 VU 3 4 k 212 Vrms 1 kHz 6 6 mVrms 1 kHz 8 Monitor Phone Max voltage level Load impedance 2 4 Vrms 4 or higher 9 AUX Input Input impedance Min input level 0 VU Max input leve...

Страница 12: ...Outer 2 DC socket 12 V Ground Socket No USB 3 1 5 VDC 2 Data 3 Data 4 Ground 4 1 5 VDC 2 Data 3 Data 4 Ground Socket No Connector Pin 1 Pin 2 Pin 3 6 6 3 mm Stereo 6 3 mm Mono Ground Signal 12 13 14...

Страница 13: ...ied parts to a sound booth via a common jack panel with common grounding this can cause a short circuit in the device This will lead to severe device failure Installation should be carried out by an a...

Страница 14: ...4 In case an external audio device shall be connected proceed accordingly to PC Connection 3 if used with an external audio device with power supply or 4 if used with a battery driven external audio...

Страница 15: ...n control at the facility If there is not a high infection potential MAICO recommends Before cleaning always switch off and disconnect the device from power supply For cleaning use a lightly dampened...

Страница 16: ...ibration certified The minimum requirements for calibration equipment are Type 1 sound level meter Octave band filter set 1 3 octave range of minimum 125 Hz to 16000 Hz must meet Type 1 sound level me...

Страница 17: ...A42 Calibration Tool 3 Service Code available for approved service partners 4 2 1 Installation of Calibration Tool Approved service partners will receive the MA42MA52 Calibration msi file Step 1 Run m...

Страница 18: ...Step 2a Chose the folder where you want the Cal Software to be saved or just proceed with the default folder recommended with Next or Step 2b If the SW is already installed you can also repair or rem...

Страница 19: ...Rev D 18 18 05 2022 Step 3 Click on Install to start the Installation Step 4 Depending on your PC configuration you might get User Account Control request To continue confirm with yes There after the...

Страница 20: ...in the Setup Wizard becomes active press it to exit the setup process IEC 60318 5 Electroacoustics Simulators of human head and ear Part 5 2 cm coupler for the measurement of hearing aids and earphon...

Страница 21: ...e button on the back to power on the device 3 Wait for the device to completely boot up 4 From the main screen Press and hold the button to view the button You will then see two options popping up 5 W...

Страница 22: ...ard in conjunction with the dials and confirm your choice with one of the buttons Close keyboard with 8 When the service access was successful the following screen will apear Close confirmation messag...

Страница 23: ...on turns to Ready and appears disabled Device is ready for calibration 4 2 3 Initate the Calibration Tool 1 Activate the Calibration Tool on your PC 2 The MA42 should connect automatically or press Co...

Страница 24: ...e drop down box Select the Calibration method in the drop down box After each step select Save to assure all selected parameters to be saved 5 Select the transducers for the instrument under the Trans...

Страница 25: ...custom maximum values for Free Field are required Follow the Instructions step by step Select the Output Transducer for the test Select the Signal Freq Adjust the level until Speaker distorts 8 Select...

Страница 26: ...he Real time clock under the Service Tab For the Attenuator linearity check select the Attenuator Tab Select the Tone and Tone type Select the Input and a Level Chose a Monitor Output and a Monitor Le...

Страница 27: ...vice Tab to set the Real time clock 13 After the calibration and all the test have been completed press Save Close to exit the calibration Software 4 2 4 How to add dealer information 1 Log in as Serv...

Страница 28: ...65 Rev D 27 18 05 2022 4 Add dealer information by using on screen keyboard with NOTE Dealer information will be available under Service menue for end user so that end user can easily contact their se...

Страница 29: ...A 42 D 0125965 Rev D 28 18 05 2022 Disassembly Remove the screws from the lower cabinet Cut the cable ties and cerefully remove glue from the cable to disconnect the cable Disconnect the second cable...

Страница 30: ...2022 Remove glue and disconnect cable from the upper case Remove left and right rotary button Remove screws and now the cover lid for the bearing housing can be opened Bearings can now be removed Disa...

Страница 31: ...Service Manual MA 42 D 0125965 Rev D 30 18 05 2022 Put out encoder PCA Remove screws from the impeller...

Страница 32: ...Service Manual MA 42 D 0125965 Rev D 31 18 05 2022 Take out the bearing cover lid and remove the bearing Take out the impeller...

Страница 33: ...Service Manual MA 42 D 0125965 Rev D 32 18 05 2022 Remove glue and disconnect the cable of the microphone Remove screws from the PCA Take out the PCA Remove left right and center keypads...

Страница 34: ...Service Manual MA 42 D 0125965 Rev D 33 18 05 2022 Take out light guides...

Страница 35: ...Service Manual MA 42 D 0125965 Rev D 34 18 05 2022 Take out the display with display frame from the upper cabinet Disassamble the display from the display frame Take out the display cover PMMA...

Страница 36: ...Service Manual MA 42 D 0125965 Rev D 35 18 05 2022 Disconnect speaker cable Remove 4 screws and take out the speaker...

Страница 37: ...Service Manual MA 42 D 0125965 Rev D 36 18 05 2022 Disassamble screws and screw fittings from the PCA...

Страница 38: ...e manuals at the disposal of authorized service companies STANDARDS Safety Standards IEC 60601 1 2005 Third Edition CORR 1 2006 CORR 2 2007 A1 2012 or IEC 60601 1 2012 reprint ANSI AAMI ES60601 1 2015...

Страница 39: ...ions W x D x H 34 5 x 20 x 8 cm 13 4 x 7 9 x 3 2 Display 5 7 TFT display 640 x 480 User Interface Keys control dials Language Settings Chinese German English Spanish French Polish Turkish Russian Japa...

Страница 40: ...ee field filter applicable Bone Conduction B71 B81 ISO 389 3 ANSI S3 6 Mastoid Placement no free field filter applicable BKH10 ISO 389 3 ANSI S3 6 Mastoid Placement no free field filter applicable Sou...

Страница 41: ...to 8000 Hz Warble Tone 5 Hz sine 5 modulation Pediatric Noise Special narrowband noise stimulus The bandwidth is frequency depended 125 Hz to 250 Hz 29 500 Hz 24 750 Hz 20 1 kHz 17 1 5 kHz 13 2 kHz 1...

Страница 42: ...uencies Distortion Total Harmonic Distortion THD Headphones insert earphones and bone conductor output see tone values Loudspeaker output 3 at 80 dB 10 at 100 dB SPL PRINTER Thermal printer Type HM E3...

Страница 43: ...105 93 85 5 12 0 500 13 0 17 0 120 108 100 7 7 0 750 6 5 11 5 120 108 105 1000 6 0 12 0 120 108 105 15 3 5 1500 8 0 14 0 120 108 105 2000 8 0 14 0 120 108 105 26 7 0 3000 8 0 14 0 120 108 105 4000 9 0...

Страница 44: ...500 8 0 12 0 110 98 95 26 1 3 0 750 5 5 10 5 115 103 100 1000 4 5 10 5 115 103 100 32 4 1 5 1500 2 5 8 5 115 103 100 2000 2 5 8 5 115 103 95 43 6 2 5 3000 2 0 8 0 115 103 100 4000 9 5 14 5 110 98 95...

Страница 45: ...2 0 8 0 120 118 95 12 8 1 0 1500 3 0 9 0 120 118 95 2000 0 0 6 0 120 118 100 15 1 2 0 3000 3 0 3 0 120 118 105 4000 0 5 4 5 120 118 105 28 8 4 5 6000 21 0 26 0 105 93 90 8000 23 0 28 0 100 88 85 26 2...

Страница 46: ...0 5 5 11 5 115 103 90 29 3 5 1500 5 5 11 5 105 93 90 2000 4 5 10 5 110 98 90 32 5 0 3000 2 5 8 5 110 98 90 4000 9 5 14 5 105 93 90 46 13 0 6000 17 0 22 0 100 88 85 8000 17 5 22 5 95 83 80 44 8 5 9000...

Страница 47: ...73 65 3 250 27 0 31 0 105 93 90 5 500 13 5 17 5 120 118 105 7 750 9 0 14 0 120 118 105 1000 7 5 13 5 120 118 105 15 1500 7 5 13 5 120 118 105 2000 9 0 15 0 120 118 105 26 3000 11 5 17 5 115 103 95 40...

Страница 48: ...1 125 26 0 30 0 90 78 85 33 250 14 0 18 0 105 93 100 36 500 5 5 9 5 110 98 105 38 750 2 0 7 0 115 103 110 1000 0 0 6 0 120 118 110 37 1500 2 0 8 0 120 118 110 2000 3 0 9 0 120 118 110 33 3000 3 5 9 5...

Страница 49: ...Air Radiation dB 250 67 0 71 0 45 33 35 500 58 0 62 0 65 53 50 750 48 5 53 5 70 58 55 1000 42 5 48 5 70 58 60 1500 36 5 42 5 70 58 60 80 2000 31 0 37 0 70 58 65 3000 30 0 36 0 70 48 55 50 4000 35 5 4...

Страница 50: ...Air Radiation dB 250 67 0 71 0 45 33 35 500 58 0 62 0 70 58 55 750 48 5 53 5 75 63 60 1000 42 5 48 5 80 68 60 1500 36 5 42 5 85 73 70 80 2000 31 0 37 0 80 68 65 3000 30 0 36 0 75 63 55 50 4000 35 5 4...

Страница 51: ...dB 125 82 5 86 5 40 28 25 250 67 0 71 0 50 38 35 500 58 0 62 0 55 43 40 750 48 5 53 5 60 48 45 1000 42 5 48 5 65 53 50 1500 36 5 42 5 70 58 55 0 2000 31 0 37 0 70 58 55 0 3000 30 0 36 0 70 58 55 0 40...

Страница 52: ...101 5 500 4 5 1 5 0 0 2 104 5 92 5 99 5 750 2 5 1 0 2 5 2 102 5 90 5 97 5 1000 2 5 1 5 3 0 2 102 5 90 5 97 5 1500 2 5 1 0 2 5 2 102 5 90 5 97 5 2000 1 5 4 5 3 5 2 103 5 91 5 98 5 3000 6 0 11 0 8 5 2...

Страница 53: ...inet Kit INT JP 8513647 Lower Shell Cabinet bottom 1 8513990 Rear overlay EN 1 8002378 Adjustable feet cradle 4 8003041 M3x8mm torx pan head Screw 8 8526915 Dial Support Kit 1 Total QTY in device 2 85...

Страница 54: ...gnet 1 8003675 Ball Bearing 2 8513644 Bearing for magnet support 1 8003043 PT2x8mm torx flange head screw 2 8522413 Keypad Kit 8512798 Keypad left 1 8512796 Keypad right 1 8512793 Center keypad 1 8522...

Страница 55: ...ght JP printed 1 8107003 Light guide center JP printed 1 8522962 PCA Keyboard Kit tested 8506436 PCA Keyboard 1 8522961 PCA Mainboard Kit tested incl FW 8522961 PCA Mainboard 1 8515930 1084 Venus App...

Страница 56: ...e Parts no kits 8527479 Upper Shell Top Part 1 8520911 Dial Assembly Total QTY in device 2 1 8511928 PCA Encoder Total QTY in device 2 1 8527482 Rotator insert A 1 8527483 Rotator insert B 1 8513698 L...

Страница 57: ...adjustable feet Total QTY in device 4 1 8108814 Microphone cable 1 8515925 Speaker 1 Part No Description QTY Comment Additional Parts no kits 8004140 Flex cable 1 8003518 Cable tie 1 8003518 Push mou...

Страница 58: ...A 42 D 0125965 Rev D 57 18 05 2022 8003041 M3x8mm torx pan head Screw Total QTY in device 8 1 8003043 PT2x8mm torx flange head screw Total QTY in device 14 1 8003186 PT2 5x8 torx pan head screw Total...

Страница 59: ...8 18 05 2022 History Version Modified Date Major Differences A Initial draft B 29 03 2021 Update calibration values and spare parts C 09 04 2021 Update section 4 2 2 D 18 05 2022 New spare part Number...

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