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APPENDIX B SOFTWARE SERVICE TOOL INSTRUCTIONS

MB90 MB120 Series Service Manual

74

Ohaus Corporation www.ohaus.com

B.3 Replace Control Board.

If replacing a new Control Board to the Analyzer

one will need to perform the 'Replace Control

Board' function.

Note: Kindly take note at the right hand remark in RED with Picture as shown below before
proceeding.

The new Control Board will be pre-loaded with the Drying firmware but to make sure the
firmware is updated one needs to upload the Analyzer firmware via the USB before performing
this function. Updated firmware is available in OH DMX. Kindly refer to Appendix C on how to
install MB90 and MB120 firmware.

Information such as below will need to provide to OHAUS in order to obtain the scale eif file.

1.  Analyzer Model Number.
2.  Analyzer Serial Number.
3.  Analyzer Load Cell Serial Number.

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Содержание MB120

Страница 1: ...SERVICE MANUAL MB90 MB120 Moisture Analyzer...

Страница 2: ......

Страница 3: ...pecifications 5 1 7 1 Admissible Ambient Conditions Use only in closed rooms 5 1 8 Controls 7 1 8 1 Display 8 1 9 Setup navigation 9 1 9 1 Setup screen 9 1 9 2 Weight and temperature calibration 9 1 9...

Страница 4: ...AC plug 36 3 7 Replacing the control board 37 3 8 Replacing the main PCB 38 3 9 Replacing the load cell 39 3 10 Replacing the load cell accessory kit 40 3 11 Replacing the heating chamber parts 42 3 1...

Страница 5: ...tore EEPROM 69 B 2 Replace Main PCB 71 B 3 Replace Control Board 74 B 4 Diagnostics 77 B 4 1 Ramp ON 78 B 4 2 Linearization Service Linearization Calibration 79 B 4 3 Span Service Span Calibration 80...

Страница 6: ......

Страница 7: ...e Chapter 3 Maintenance Procedures Contains preventive maintenance procedures and disassembly repair and replacement procedures Chapter 4 Final Testing Contains a list of required test masses an opera...

Страница 8: ...dous situation with low risk resulting in damage to the device or the property or in loss of data or minor or medium injuries if not avoided Attention no symbol for important information about the pro...

Страница 9: ...mum 30 minutes Service should only be performed by authorized personnel Use electrostatic protection measures when handling the printed circuit board Only use original replacement parts and accessorie...

Страница 10: ...oltmeter DVM input impedance of min 10 megohms in 1 Volt dc position 3 Standard Electronics tool kit 4 Soldering iron 50 watt and solder rosin core solder not acid core 5 Solder remover 6 Ohaus Temper...

Страница 11: ...Range 40 230 40 200 Drying Programs Standard Fast Ramp Step Standard and Fast Switch off Criteria Timed Auto 30 60 90 seconds Autofree mg s Autofree s manual Manual Time and Auto Heat Source Halogen D...

Страница 12: ...necting the instrument to the power supply when switched on from standby mode the instrument is ready for operation immediately Voltage fluctuations Mains supply voltage fluctuations up to 15 10 of th...

Страница 13: ...igure 1 1 MB90 MB120 Membrane Switch and Display 1 Turns On or Off display and fan 2 When pressed sends Print command 3 When pressed either starts or stops the drying process 4 When pressed performs T...

Страница 14: ...and create new method 2 Test results Manage test results 3 Setup Change system settings 4 Help guide Method development guide and help information 1 2 3 4 Figure 1 2 MB120 and MB90 Display Screen But...

Страница 15: ...ation The Moisture Analyzer can be calibrated with an external mass of 50 grams Calibration of the Moisture Analyzer is not absolutely necessary for a correct moisture determination as the measurement...

Страница 16: ...temperature calibration button The Adjustments screen appears Press the Weight adjustment external button The display highlights the action you should take Remove the sample pan and place the require...

Страница 17: ...least 30 minutes before performing calibration Note The temperature calibration kit is available as optional equipment Press Setup button on the main screen Press Weight and temperature calibration b...

Страница 18: ...ver and enter this temperature Using the up down arrow buttons adjust the display reading to agree with the thermometer Use the left right arrow buttons to highlight ACCEPT NEW CAL then press the Ente...

Страница 19: ...9 2 3 Last temperature calibration result Press Setup button on the main screen The Setup menu appears Press Weight and temperature calibration button The Adjustments screen appears Press the Last te...

Страница 20: ...een languages available on all displays This procedure permits the selection of any language Press Setup button on the main screen The Setup menu appears Press User settings The User settings screen a...

Страница 21: ...ice Manual 15 Ohaus Corporation www ohaus com 1 9 3 2 Brightness Press Setup button on the main screen The Setup menu appears Press User settings button The User settings screen appears Press Brightne...

Страница 22: ...120 Series Service Manual 16 Ohaus Corporation www ohaus com 1 9 3 2 Beep Press Setup button on the main screen The Setup menu appears Press User settings button The User settings menu appears Press B...

Страница 23: ...put into operation for the first time you should enter the current date and time These settings are retained even if you disconnect your instrument from the power supply A built in battery will maint...

Страница 24: ...ration www ohaus com Set date format Press Back to exit Set time format Press Back to exit Set date Press and to set correct date month and year Press Set date to save it Press Back to exit Set time P...

Страница 25: ...inters and computers The following sections describe the hardware and software provided with the Moisture Analyzer Press Setup button on the main screen The Setup menu appears Press Device settings bu...

Страница 26: ...and 115200 Default setting is 9600 Baud Setting data bits Select the desired data bits of 7 or 8 Default setting is 8 Setting parity Select the desired parity setting of either NONE EVEN or ODD Defaul...

Страница 27: ...creen The Setup menu appears Press Device settings button The Device settings menu appears Press Print settings button The Print settings menu appears Press Print results automatically to switch ON or...

Страница 28: ...s com 1 9 7 Company information Press Setup button on the main screen The Setup menu appears Press Device settings button The Device menu appears Press Company Information button The Company informati...

Страница 29: ...ual 23 Ohaus Corporation www ohaus com 1 9 8 User management Press Setup button on the main screen The Setup menu appears Press User Management button The Users screen appears Press New button to crea...

Страница 30: ...CHAPTER 1 GETTING STARTED MB90 MB120 Series Service Manual 24 Ohaus Corporation www ohaus com Set the password Enable the password Set the password Set the user profile...

Страница 31: ...Manual 25 Ohaus Corporation www ohaus com 1 10 System and data management Press Setup button on the main screen The Setup menu appears Press System and data management The System and data management...

Страница 32: ...G STARTED MB90 MB120 Series Service Manual 26 Ohaus Corporation www ohaus com System backup and restore Factory reset Software update Note For the rest of the Menu navigation please kindly refer to In...

Страница 33: ...signs of bending twisting or corrosion Clean the unit before evaluating any mechanical problems Remove any debris inside the Housing Check condition of Keypad and Display Dryer Unit with protective gl...

Страница 34: ...eplace cable Replace main PCB include SD card and CPU Some buttons do not respond Defective keyboard Replace keyboard A new keypad overlay is needed Portions of display do not light up Defective displ...

Страница 35: ...ure Analyzer on and allow it warm up for at least one hour before performing these tests Make sure the test area is free from drafts and the surface that the Moisture Analyzer rests on is level and vi...

Страница 36: ...e 3 1 1 Preventive Maintenance Checklist The moisture analyzer should be inspected and checked regularly as follows 1 Remove the Pan Handler Pan Support and Draft Shield to inspect and clean the area...

Страница 37: ...31 Ohaus Corporation www ohaus com To avoid electrostatic damage during production conducting floors controlled air humidity and EMC mats are used When servicing the unit it is also advisable as soon...

Страница 38: ...emove the 4 foots to locate the 4 screws securing the housing in place Figure 3 2 Removing foots and screws from bottom housing Figure 3 1 MB90 120 with top open 5 Holding the housing and heating cham...

Страница 39: ...wire and 1 set of wire connected to the control board See Figure 3 4 Note Take note on the cable routing 8 Lift the top housing off and set it aside Figure 3 4 Three screws in Top Housing Remove cable...

Страница 40: ...ch 1 Flip the Analyzer around and locate the Power PCB compartment 2 Remove the Analyzer two back foots 3 Remove the 4 screws securing the power board compartment 4 Below show the Analyzer Power Switc...

Страница 41: ...7 Replacing the Power Switch PCB by removing two cables from the PCB Locate and remove the 4 screws at 4 corners of the PCB which securing the PCB in the compartment 8 Remove the Power Switch from the...

Страница 42: ...acing the AC plug 1 Open the Analyzer Power Compartment Refer to 3 4 2 Remove the two cables connected from the AC Plug to the Power Board and the Grounding wire to the Analyzer base Note Take note on...

Страница 43: ...the housing 4 Remove and replace the AC Plug by shifting the plug upwards 3 7 Replacing the control board 1 Open the Analyzer Refer to 3 2 2 Detach the Top Housing 3 Locate the Control Board which is...

Страница 44: ...is needed when replacing the Control Board 3 8 Replacing the main PCB 1 Open the Analyzer Refer to 3 2 2 The Main PCB is located at the Top Housing 3 Remove the cables from Main PCB to Control Board a...

Страница 45: ...ard 3 9 Replacing the load cell 1 Open the Analyzer Refer to 3 2 2 Detach the Top Housing 3 Locate the Load Cell 4 Remove the Load Cell metal plate by removing the 4 screws securing the plate 5 Lift u...

Страница 46: ...ing the load cell accessory kit The load cell accessory kit consist of the below Moisture adsord material 1 After removing the Load cell kit from its compartment Refer to 3 9 you will see the moisture...

Страница 47: ...ing this material it is advised to let the material set for a day before performing any weight calibration to the Analyzer Load cell rubber ring 1 Open the Analyzer Refer to 3 2 2 Detach the Top Housi...

Страница 48: ...the heating chamber parts 3 11 1 Opening the Heating Chamber Compartment 1 Lift up the heating chamber 2 Remove the Sample Pan Pan Handle Pan Support Draft Shield and Tray Pan 3 2 3 Remove the chambe...

Страница 49: ...tion www ohaus com 3 11 1 1 Replacing the Temperature sensor 1 Remove the temperature wire from its protective sleeve 2 Detach the wire connection as show below 3 Remove the two screws holding the tem...

Страница 50: ...emperature sensor cable from its protective sleeve 2 Disconnect the cable and Connect probes to the Temperature Sensor Cable s 3 Measure resistance it should be approximately 1 000 4 Open and close th...

Страница 51: ...1 1 3 Replacing the Halogen Lamp 1 Open the lid 3 10 1 2 Remove the chamber glass by following the below steps Gently separate the two metal clips which securing the chamber glass in position 3 Remove...

Страница 52: ...left and right and at the same time use both thumbs to lift the Halogen lamp carefully upward out of the clamping springs 6 Remove and replace a defective halogen lamp Note The two ends of the Halogen...

Страница 53: ...aus com 3 11 1 4 Replacing the Thermal Overload 1 Open the lid 3 11 1 2 Remove the Temperature sensor 3 11 1 1 3 Remove the halogen lamp if necessary 3 11 1 3 4 Remove the two wires connected to the T...

Страница 54: ...om the chamber housing 7 Remove and replace the Thermal Overload Note During this step care is needed to avoid breaking the Halogen lamp if the halogen lamp still attached 3 11 1 5 Installing the Ther...

Страница 55: ...ad with power to the unit off use an ohm meter to measure resistance between the devise s poles Resistance should be zero If so the devise is in good working condition if not continue to step 2 2 Pres...

Страница 56: ...poration www ohaus com 3 11 2 Replacing Top Housing Components 3 11 2 1 Removing the top housing cast iron plate 1 Open the Analyzer and remove the Main PCB 3 8 2 Remove the top housing cast iron plat...

Страница 57: ...tion www ohaus com 3 11 2 2 Replacing the Fan 1 Open the Analyzer and remove the Main PCB 3 8 2 Remove the housing cast iron plate 3 11 2 3 Locate the Fan 4 Remove the Fan cable connected to the Lid s...

Страница 58: ...ain PCB 3 8 2 Remove the housing cast iron plate 3 11 2 3 Locate the Lid sensor board 4 Remove cable from Fan and to temperature sensor remove the 3 screws holding the board is place 5 Remove and repl...

Страница 59: ...Keyboard 1 Open the Analyzer and remove the Main PCB 3 8 2 Remove the housing cast iron plate 3 11 2 3 Locate the Keyboard 4 Use a broad blade such as a wide X Acto knife to remove the label Clean th...

Страница 60: ...d ensure the LCD are display normal with no missing segment 4 4 Performance Tests Accurate performance is determined by a series of three performance tests Precision Off Center Load and Centered Load...

Страница 61: ...d deviation of the readings is less than the indicated tolerance the Analyzer passes the Precision Test CAUTION Remove the mass from the pan after testing Adjustment If the deviation for any set of re...

Страница 62: ...tely 50 grams place the sample on the center of platform Record the reading on the worksheet provided 3 Remove the sample from the platform 4 Repeat this test starting at Step 1 until you record a tot...

Страница 63: ...to perform this test can be utility masses Note Due to the use of relative weighing and limited use of the weighing range in moisture analysis linearity performance is not critical Linearity Test Mas...

Страница 64: ...arts for current parts lists contact your local Ohaus distributor or www ohaus com NOTE In all cases where a part is replaced the scale must be thoroughly checked after the replacement is made The sca...

Страница 65: ...TER 5 PARTS IDENTIFICATION DIAGRAMS MB90 MB120 Series Service Manual 59 Ohaus Corporation www ohaus com CHAPTER 5 PARTS IDENTIFICATION DIAGRAMS 5 1 MB90 MB120 parts Figure 5 1 MB90 MB120 Housing and P...

Страница 66: ...mal Overload 4 Halogen Bulb 5 Glass 6 Pan Holder 7 Pan support 8 Wind Ring 9 Tray 10 Air Channel Kit 13 Main Board 14 Key Board 15 LCD 16 Overlay 17 Load Cell 18 Load Cell Acc Kit 19 Foot 20 Base Cabl...

Страница 67: ...ent is relative The balance determines the weight of the sample before and after drying and the moisture is calculated on the basis of the ratio between wet and dry weights Nevertheless you should cal...

Страница 68: ...mperature calibration button to access calibration menu Press Back to return to previous step Press the Weight adjustment external button The display highlights the action you should take Follow the i...

Страница 69: ...APPENDIX A STANDARD CALIBRATION MB90 MB120 Series Service Manual 63 Ohaus Corporation www ohaus com The display indicates if the calibration was successful...

Страница 70: ...form this procedure If the Moisture Analyzer has been recently used allow at least 30 minutes before performing calibration Note The temperature calibration kit 11113857 is available as optional equip...

Страница 71: ...temperature calibration process Follow the screen prompts throughout the process The dryer unit is heated to a temperature of 100 C You can observe the progress on the display as the dryer temperature...

Страница 72: ...ure is defined by two points Proceed exactly as you did for the first temperature After you have set the display to agree with the thermometer then press the Enter button CAUTION Danger of burns Be ca...

Страница 73: ...version and instructions on how to use it please follow below steps 1 Go to http dmx ohaus com and log in with your username and password 2 Go to View by product 3 Open the folder Service Software 4...

Страница 74: ...INSTRUCTIONS MB90 MB120 Series Service Manual 68 Ohaus Corporation www ohaus com After selecting MB90 120 MOISTURE under Product Selection you will be able to see the below Function Selection which su...

Страница 75: ...ze service person to upload and restore the scale data Information such as below will need to provide to OHAUS in order to obtain the scale eif file 1 Analyzer Model Number 2 Analyzer Serial Number 3...

Страница 76: ...ation click Next You will come to Write Image File page as shown below Fill in the below and click Next to complete the Write Image File process 1 Analyzer Serial Number 2 Analyzer Load Cell Serial Nu...

Страница 77: ...o perform the Replace Main PCB function Note Kindly take note at the right hand remark in RED with Picture as shown below before proceeding After powering up an Analyzer with new PC board you will see...

Страница 78: ...on such as below will need to provide to OHAUS in order to obtain the scale eif file 1 Analyzer Model Number 2 Analyzer Serial Number 3 Analyzer Load Cell Serial Number Once Replace Main PCB is select...

Страница 79: ...Load Cell image file eif files provided by OHAUS 5 Click Next to complete the Write Image File process Note After completing the above information when you click Next you will hear a beep sound from...

Страница 80: ...e as shown below before proceeding The new Control Board will be pre loaded with the Drying firmware but to make sure the firmware is updated one needs to upload the Analyzer firmware via the USB befo...

Страница 81: ...ale Serial Number 2 Model number 3 Load Cell Serial Number 4 Point to the Analyzer and load cell image file provided by OHAUS 5 Click Next to complete the Replace Control Board process Note After comp...

Страница 82: ...APPENDIX B SOFTWARE SERVICE TOOL INSTRUCTIONS MB90 MB120 Series Service Manual 76 Ohaus Corporation www ohaus com...

Страница 83: ...d Service and Repair Tools Once Diagnostic is selected the Com Port Configuration option will appear Complete the configuration and click Next You will see the bellow window MB90 120 Diagnostics consi...

Страница 84: ...ommand 5 MB90 and MB120 support the below print command B 4 1 Ramp ON Select Ramp ON the right hand window will show the A to D conversion signal from Load cell to Main PCB Press again to terminate th...

Страница 85: ...bration Selecting this function will allow the Analyzer to perform the Service Linearization calibration Follow instruction on the Analyzer display screen when selecting this function During Service L...

Страница 86: ...n Calibration Selecting this function will allow the Analyzer to perform the Service Span Calibration Follow instruction on the Analyzer display screen when selecting this function During Service Span...

Страница 87: ...Analyzers used the same firmware THEREFORE factory configuration will define the model of the Analyzer Since the firmware operated under MB90 and MB120 are different from the rest of OHAUS products th...

Страница 88: ...e files inside folder MB90_120_SR1 xx into your thumb drive you will have total 9 files 2 Insert the thumb drive into either one of the USB Host located at the back of the Analyzer 3 Switch ON the pow...

Страница 89: ...ound 30 sec to complete and during the process the Analyzer will have a onetime Auto Boot 6 When you see the below screen only you remove the thumb drive and RE BOOT the Analyzer to complete the firmw...

Страница 90: ...SN30284476E_1 10 5 Press the Update then pop out the confirm information Press the Update for the software installation 6 Update procedure takes about 5 10 minutes During this time there will be blank...

Страница 91: ...software is used for software corrupt issue Obtain Analyzer firmware from DMX as below 1 Un zip ClearSR zip as below copy all the 3 files in an empty Thumb drive 2 Plug the Thump drive into the back...

Страница 92: ...e the Image file upload and follow by Service Lin and Span calibration to complete the whole process Perform Temp calibration if necessary Note Once you had performed this action in an MB120 the Analy...

Страница 93: ...by following the below instruction 1 Obtain MB120 Password Reset from DMX as below Under MB90 and MB120 Moisture Analyzer folder User Software You will locate the file name MB120 Password Reset zip f...

Страница 94: ...to either one of the USB Host located at the back of the Analyzer 3 Switch ON the power during power up the Analyzer will indicate the presence of the thumb drive and starts to locate the Autorun file...

Страница 95: ...ANALYZER FIRMWARE MB90 MB120 Series Service Manual 89 Ohaus Corporation www ohaus com 5 Remove the thump drive and RE BOOT The Analyzer after rebooting will then show the screen below after a success...

Страница 96: ...demark of Ohaus Corporation The information contained in this manual is believed to be accurate at the time of publication but Ohaus Corporation assumes no liability arising from the use or misuse of...

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