Technical Manual ReSound Metrix MX70-D/DI/DV/DVI/ MX80-DVI BTE GN ReSound as Global Technical Operations gto.gnresound.com Lautrupbjerg 9 DK-2750 Ballerup Denmark E-mail: Service@gnresound.dk
Table of contents Subject Page Part lists... 3-10 Electronic module assembly...11-12 On-off mechanism...13 Final assembly... 14-15 Replacement of microphones...16 Test... 17-18 Amplifier assembly... 22-23 Page 2 of 18
Part list - Exploded view (the model shown is MX70-DVI) Electronic housing Pins Listening coil Suspensions VC PB cover Front mic. PCB Rubber pads Back mic. Push-button Socket Rec. Module ID-part Socket holder Batt.springs Batt. door complete Socket holder complete On/off spring Child lock Page 3 of 18
Part list Item Part No. Service PCB C3.0, MX70/MX80 15429200 Batt. spring kit MX70 (+/-) 15429300 Socket holder compl MX70/MX80 15429400 Rubber pads 15456700 Microphone EM4368-C54 10128601 Ear hook filters 0414-469 On/off Spring 15168400 ID part, with serial no. 15437400 Push-button 15327000 Programming socket CS44 15327100 Listening coil Y29-36-FHM 3122 150 74541 Colour marker, red 15665800 Colour marker, blue 15665801 Child lock, anthracite 15167602 Service tool 15506500 Pin, 0.5 x 4.40, for PB cover 15156000 Pin, 0.6 x 7.70, for batt. 15167700 Pin, 0.6 x 5.20, front 15167900 Pin, 0.6 x 8.50, rear 15168000 Push-button cover Part No. Platinum 15155900 Light blonde 15155901 Medium blonde 15155902 Dark blonde 15155903 Dark brown 15155904 Beige 15155905 Anthracite 15155906 Marble grey 15155907 Black 15155908 Red 15155911 Blue 15155912 Green 15155913 Light grey 15155914 Grey2 15155915 Orange 15155917 Red 15155918 Green 15155919 Blue 15155920 Purple 15155921 Volume control Part No. Platinum 16547100 Light blonde 16547101 Medium blonde 16547102 Dark blonde 16547103 Dark brown 16547104 Anthracite 16547106 Black 16547108 Grey1 16547109 Beige 16547110 Red 16547111 Blue 16547112 Green 16547113 Light grey 16547114 Grey2 16547115 Page 4 of 18
Part list Accessories: Part No. CS44 programming cable (Right) 9022 907 69019 CS44 programming cable (Left) 9022 907 69029 Pin removal tool 15502500 Audio boot MX80 16231400 Audio boot MX70 16231500 Ear Box (left & right) 15458900 Package, kit for flex vent, TT 15468500 Thin Tubes Part No. Kit, flex vent system, thin tube 15467800 Thin tube click ins, 7L (40 pcs.) 15468100 Thin tube click ins, 9L (40 pcs.) 15468200 Thin tube click ins, 7M (40 pcs.) 15468300 Thin tube click ins, 9M (40 pcs.) 15468400 Blister Pack Part No. Blister Pack 0A/L 15476100 Blister Pack 0B/L 15476200 Blister Pack 1A/L 15476300 Blister Pack 1B/L 15476400 Blister Pack 2A/L 15476500 Blister Pack 2B/L 15476600 Blister Pack 3A/L 15476700 Blister Pack 3B/L 15476800 Blister Pack 0A/R 15476900 Blister Pack 0B/R 15477000 Blister Pack 1A/R 15477100 Blister Pack 1B/R 15477200 Blister Pack 2A/R 15477300 Blister Pack 2B/R 15477400 Blister Pack 3A/R 15477500 Blister Pack 3B/R 15477600 Page 5 of 18
Part list Receiver module MX70 & MX80* Colour MX70-DVI MX70-DV MX70-D MX70-DI MX80-DVI Platinum 15428600 15429600 15429700 15429800 15754900 Light blonde 15428601 15429601 15429701 15429801 15754901 Medium blonde 15428602 15429602 15429702 15429802 15754902 Dark blonde 15428603 15429603 15429703 15429803 15754903 Dark brown 15428604 15429604 15429704 15429804 15754904 Beige 15428605 15429605 15429705 15429805 15754905 Anthracite 15428606 15429606 15429706 15429806 15754906 Marble grey 15428607 15429607 15429707 15429807 15754907 Black 15428608 15429608 15429708 15429808 15754908 Light grey 15428614 15429614 15429714-15754914 Grey2 15428615 15429615 15429715-15754915 Metal 15428616 15429616 - - 15754916 Orange 15428617 - - - 15754917 Red 15428618 - - - 15754918 Green 15428619 - - - 15754919 Blue 15428620 - - - 15754920 Purple 15428621 - - - 15754921 * Receiver module includes housing, hook, receiver and wires and must always be ordered if the receiver is defective. Page 6 of 18
Part list Electronic housing* MX70-DVI & MX80-DVI MX70-DV MX70-D MX70-DI Platinum 15428800 15428900 15429000 15429900 Light blonde 15428801 15428901 15429001 15429901 Medium blonde 15428802 15428902 15429002 15429902 Dark blonde 15428803 15428903 15429003 15429903 Dark brown 15428804 15428904 15429004 15429904 Beige 15428805 15428905 15429005 15429905 Anthracite 15428806 15428906 15429006 15429906 Marble grey 15428807 15428907 15429007 15429907 Black 15428808 15428908 15429008 15429908 Metal 15428816** 15428916** 15429016** 15429916** Orange 15428817 - - - Red 15428818 - - - Green 15428819 - - - Blue 15428820 - - - Purple 15428821 - - - * Electronic housing, hinge pin & push-button cover ** Housing in metallic comes w/o push-button cover The PB cover is not available in metal colour. Therefore the electronic housing is delivered without cover. Another colour can be chosen instead. Page 7 of 18
Part list Bat Door, MX70 Part No Platinum 15441700 Light blonde 15441701 Medium blonde 15441702 Dark blonde 15441703 Dark brown 15441704 Beige 15441705 Anthracite 15441706 Marble grey 15441707 Black 15441708 Light grey 15441714 Grey 15441715 Metal 15441716 Orange 15441717 Red2 15441718 Grey2 15441719 Blue2 15441720 Purple 15441721 Bat Door, MX80 Part No Platinum 15194800 Light blonde 15194801 Medium blonde 15194802 Dark blonde 15194803 Dark brown 15194804 Beige 15194805 Anthracite 15194806 Marble grey 15194807 Black 15194808 Light grey 15194814 Grey 15194815 Metal 15194816 Orange 15194817 Red2 15194818 Grey2 15194819 Blue2 15194820 Purple 15194821 Front Mic suspension Part No Platinum 15155100 Light blonde 15155101 Medium blonde 15155102 Dark blonde 15155103 Dark brown 15155104 Front, beige 15155105 Anthracite 15155106 Black 15155108 Marble grey 15155109 Red 15155111 Blue 15155112 Green 15155113 Light grey 15155114 Grey2 15155115 Back Mic suspension: Part No Platinum 15155300 Light blonde 15155301 Medium blonde 15155302 Dark blonde 15155303 Dark brown 15155304 Beige 15155305 Anthracite 15155306 Black 15155308 Marble grey 15155309 Red 15155311 Blue 15155312 Green 15155313 Light grey 15155314 Grey2 15155315 Page 8 of 18
Part list - HI Complete MX70-DVI: Part No. Platinum 15196200 Light blonde 15196201 Medium Blonde 15196202 Dark blonde 15196203 Dark brown 15196204 Beige 15196205 Anthracite 15196206 Marble Grey 15196207 Black 15196208 Metal / Light Grey * 15196214 Metal / Grey * 15196215 Metal / Antracite * 15196216 MX70-DI: Part No. Platinum 15289900 Light blonde 15289901 Medium Blonde 15289902 Dark blonde 15289903 Dark brown 15289904 Beige 15289905 Anthracite 15289906 Marble Grey 15289907 Black 15289908 MX70-D: Part No. Platinum 15290000 Light blonde 15290001 Medium Blonde 15290002 Dark blonde 15290003 Dark brown 15290004 Beige 15290005 Anthracite 15290006 Marble Grey 15290007 Black 15290008 Metal / Light grey * 15290014 Metal / Grey2 * 15290015 Metal / Anthracite * 15290016 MX70-DV: Part No. Platinum 15289800 Light blonde 15289801 Medium Blonde 15289802 Dark blonde 15289803 Dark brown 15289804 Beige 15289805 Anthracite 15289806 Marble Grey 15289807 Black 15289808 Metal / Light Grey * 15289814 Metal / Grey * 15289815 Metal / Anthracite * 15289816 * Two-tone devices : The electronic housing is Metal. Front and back mic suspension is grey2. Page 9 of 18
Part list - HI Complete * Two-tone devices : The electronic housing is Metal. MX80-DVI : Part No. Platinum 15280500 Light blonde 15280501 Medium Blonde 15280502 Dark blonde 15280503 Dark brown 15280504 Beige 15280505 Anthracite 15280506 Marble Grey 15280507 Black 15280508 Metal / Red * 15280511 Metal / Blue * 15280512 Metal / Green * 15280513 Metal / Light Grey * 15280514 Metal / Grey * 15280515 Metal / Antracite * 15280516 Orange / Grey2 15280517 Red2 / Grey2 15280518 Green2 / Grey2 15280519 Blue2 / Grey2 15280520 Purple2 / Grey2 15280521 Page 10 of 18
Electronic module assembly Fit the suspension to the front microphone. Ensure that the mic. is turned the correct way before mounting it into the suspension. Fit the suspension to the back microphone. Ensure that the mic. is turned the correct way before mounting it into the suspension. Wrong. PICTURE Right. Put on the self-adhesive rubber pads on each side of the back microphone as shown. Fold the back microphone around the PCB. Ensure no damage to PCB during the folding process. Page 11 of 18
Electronic module assembly Align the keys on the socket holder with the grooves in the housing. Press the amplifier gently into the Electronic module housing. Adjust the mic. suspensions to ensure They are correctly seated in the electronic housing. Place the PB cover + hinge(0.5x4.40) on the housing. Ensure no damage to the cover during the insertion process. Electrinic module complete. Page 12 of 18
On-off mechanism Rear pin Connect the electronic housing to the receiver module and fix them with the pins (except the rear pin). Mount the on/off spring into the receiver module and fix it with the rear pin. Page 13 of 18
Final assembly Using the applicable fixture, solder the Receiver wires from rec. Module to the electronic module. Do not strain the Wires. While routing the rec. wires, fit the electronic module to the receiver Module. Ensure the wires are not trapped between the two modules. Fit the battery door to the receiver module and fix it with the pin. NOTE : When replacing the PCB, remember to place the same ID part No. in the new socket holder. Insert the on-off mechanism into the device. Ensure it is seated correctly in the housing. Insert the ID part (printed w/ Serial no.) into socket holder and secure correctly. Page 14 of 18
Final assembly Rear pin (0.6x8.50) Front pin (0.6x5.20) Batt. hinge (0.6x7.70) Place the filter in the device hook. Make sure there is no gap between Hook and filter. Fit the 3 pin, Front, Rear and battery hinge. To remove the pins, place the instrument in the service tool. Use the pin remover tool to push the pins out. Page 15 of 18
Replacement of microphones Remove soldermaterial from microphone pads. Place the new mic s and resolder as shown. Page 16 of 18
Test The BTE fixture consists of two parts, a test frame and an instrument holder. Each part has its own part number and they are available from GN Otometrics in Taastrup. Test tubing is normal 20 mm effective lenght as for all AUDIOmaster BTE testing. Instrument fixture p/n 1-21-69200 Test frame p/n 1-21-65900 Page 17 of 18
Test Use of the test fixture is mandatory for all Metrix BTE during AUDIOmaster testing. To use the fixture, place the instrument under test in the fixture according to picture. Connect the programming cable and select MX 70 test program in AUDIOmaster. During the test program execution the IAD calibration will be performed at the appropriate time. Another bennefit from the fixture is that the instrument is in a well defined position so the telecoil test can be performed without any interaction from the operator. 20 mm Instrument fixture p/n 1-21-69200 Page 18 of 18