Ranger 7000® Service Manual
Contents
1. ee air ner ST ees 7 p wE i aF arr i i Fr rn Screw at Lock position Screw at Un Lock position Once you set the two screws in Un Lock position you will be able to remove the LFT PCBA from the bottom housing Ohaus Corporation www ohaus com 42 Ranger 7000 Series Service Manual 3 7 5 Replacing SG LFT PCBA R71 R71MD3 R71MD6 R71MD15 amp R71MD35 Model R71MD6 is shown below 1 Remove 5 cables from the LFT PCBA 2 Loosen the 2 screws securing the LFT PCBA with the base bottom housing 1 Remove the below 5 cables from the LFT PCBA Location for the 5 cables A Cable Cable link from LFT PCBA to optional rechargeable battery B Cable Cable link from LFT PCBA to ON OFF Switch C Cable Cable link from LFT PCBA to Main PCBA D Cable Black While cable link from LFT PCBA to AC Adapter E Cable Red Black Cable from LFT PCBA to Main PCBA Ranger 7000 Series Service Manual 43 Ohaus Corporation www ohaus com 2 After removing the above 5 cables now locate and loosen 2 screws which securing the LFT PCBA to the bottom housing screw at Lock position Screw at Un Lock position Once you set the two screws in Un Lock position you will be able to remove the LFT PCBA from the bottom housing Ohaus Corporation www ohaus com 44 Ranger 7000 Series Service Manual 3 7 6 Replacing SG Main PCBA R71 R71MD3 R71MD6 R71MD15 amp R71MD35 Model R71MD15 is shown below 1 Remove2. OHAUS Ranger 7000 Scale Service Manual TABLE OF CONTENTS 1 GETTING STARTED 1 1 INTRODUCTION 1 2 SERVICE FACILITIES 1 3 TOOLS AND TEST EQUIPMENT REQUIRED 1 4 SPECIFICATIONS 1 5 OPERATION 1 5 1 Overview of the Controls 1 5 2 Principle Functions and Main Menu 2 DIAGNOSTIC GUIDE 2 1 TROUBLESHOOTING 2 2 SOFTWARE 2 3 DIAGNOSTIC GUIDE 3 MAINTENANCE REPAIR PROCEDURES 3 1 PREVENTIVE MAINTENANCE 3 2 OPENING THE SCALE 3 2 1 Preparation for Opening Ranger 7000 Models 3 3 OPENING THE TERMINAL MODULE 3 3 1 Detaching the Terminal from the base 3 3 2 Detaching the base RS422 cable from the Terminal 3 3 3 Dismantling the Terminal housing 3 4 OPENING THE BASE MODULE 3 4 1 Opening R71 large housing model 3 4 2 Opening R71 small housing mode 3 5 Replacing MFR Load cell R71 3 6 Replacing SG Load cell R71 3 7 REPLACING THE PRINTED CIRCUIT BOARD ASSEMBLIES PCBA 3 7 1 Terminal 3 7 2 Remove the TFT PCB 3 7 3 Removing MFR Main PCBA 3 7 4 Removing MFR LFT PCBA 3 7 5 Replacing SG LFT PCBA 3 7 6 Replacing SG Main PCBA 4 TESTING 4 1 TEST MASSES REQUIRED 4 1 1 OPERATIONAL TEST 4 2 LOAD CELL TEST USING RAMP 4 3 PERFORMANCE TESTS 4 3 1 Precision Test 4 3 2 Repeatability Test non approved models 4 3 3 Linearity Test 4 3 4 Off Center Load Test 5 PARTS LISTS amp DIAGRAMS 5 1 TERMINAL SPARE PARTS 5 2 BASE SPARE PARTS R71MD3 and R71MD6 5 3 BASE SPARE PARTS R71MD15 and R71MD35 5 4 BASE SPARE PARTS R71MHD3 and R71MHD6
3. 5 5 BASE SPARE PARTS R71MHD15 and R71MHD35 Ohaus Corporation www ohaus com Page No Ranger 7000 Service Manual TABLE OF CONTENTS 6 ACCESSING THE SERVICE MENU 6 1 Accessing the Service Menu Super Password 6 2 Creating UserLogin 6 3 Under Service Menu 6 4 Maintenance Diagnostic 6 5 Disable Service Menu APPENDIX A COMMUNICATION A 1 Scale Commands A 2 RS232 DB9 Pin Connections A 3 USB HOST A 3 1 Print Format A3 2 Print Out String for g kg lb oz Units A3 3 Print Out String for Ib oz Units APPEDDIX B B 1 Software Installation amp Software Selection B 2 Product Selection B 3 To Restore the EEPROM Data B 4 Com Port Configuration B 5 To Replace Load Cell B 6 Install New Main Printed Circuit Board PCBA B 7 Update the Software in the Scale B 8 Diagnostic LIST OF TABLES TABLE NO TITLE 1 1 Specifications 1 2 Menu and Screen Navigation 2 1 Diagnostic Guide 4 1 Calibration Mass Values 4 2 Repeatability Worksheet 4 3 Linearity Test Reference and Load Masse 4 4 Off Center Load Mass Values 5 1 Terminal Spare Parts 5 2 Base Spare Parts R71MD3 and R71MD6 5 3 Base Spare Parts R71MD15 and R71MD35 Page No 5 4 Base Spare Parts R71MHD3 and R71MHD6 5 5 Base Spare Parts R71MHD15 and R71MHD35 A 1 Interface Command List Ranger 7000 Service Manual Ohaus Corporation www ohaus com TABLE OF CONTENTS Ohaus Corporation www ohaus com iii Ranger 7000 Service Manu
4. procedure P a OE COn ee IS oe 9 Place the Reference Mass on the scale record the weight and remove Place Load 1 on the scale and press TARE Place the test mass on the scale record the weight and remove Place Load 2 on the scale and press TARE Place the test mass on the scale record the weight and remove Place Load 3 on the scale and press TARE Place the test mass on the scale and record the weight The difference in the weights of the test mass should be within the tolerance in Table 4 2 If the differences are out of tolerance verify the test conditions and repeat the test If the scale remains out of tolerance the Load Cell may need to be replaced Ohaus Corporation www ohaus com 52 Ranger 7000 Series Service Manual 4 3 4 Off Center Load Test The Off Center Load Test is used to determine whether displayed weight values are affected by moving the sample to different areas of the Pan OCL test may also be referred to as a Shift Test NTEP or an Eccentricity Test OIML The test weight used in this test 1 3 the capacity of the scale See table for the test weight values TABLE 4 4 OFF CENTER LOAD MASS VALUES Model oc massvalue R71MHD3 1 The class of test weight to be use during OCL is not critical R71MHD15 2 Use large weights where possible Smaller weights can be R71MHD35 stacked on the larger but a stability problem may occur if many R71MD3 smaller weights are used If weights cannot be stacked t
5. CLR L User as F3 Fa un 1222 F3 Fa Press the following button to continue ae EI gt User Ranger 7000 Series Service Manual 74 Ohaus Corporation www ohaus com 19 Keypad Test U6 Ohaus Corporation www ohaus com 73 Ranger 7000 Series Service Manual 6 5 Disable Service Menu 1 Press and hold 0 User button you will see the preset User Profiles 2 3 5 PQRS TUV WXYZ ees e 2 By selecting the far right button you will come to the below window screen UserLogin se A thority 1 Aministrator Ranger 7000 Series Service Manual 76 Ohaus Corporation www ohaus com a 1 er ye 3 Key in previously set User password example 123 you will disable the Service Menu as shown below Main Menu GLP GMP Data gt Communication gt amp User Profiles i Event Counter l da Alibi Mem ory Maintenance nce Ohaus Corporation www ohaus com 77 Ranger 7000 Series Service Manual APPENDIX A COMMUNICATION The Software Service Tool Part Number 83032124 is required when a main PC Board is replaced in a Ranger 7000 scale It is used to re configure the scale to its original parameters in the case of a PCB replacement The tool can also be used to communicate with the scale using comman
6. Series Service Manual TABLE 5 3 BASE SPARE PARTS R71MD15 AND R71MD35 Item Number Description 6 30095937 SP SG Loadcell 5kg R71 OZ oOo o 8 30095909 SP PCBA Base SG R71 2000000 30095932 SP Packaging Assembly SMART o 30095933 SP Packaging Assembly LA SG R71 _ 30078209 Box SM R71 S O Ranger 7000 Series Service Manual 61 Ohaus Corporation www ohaus com 5 4BASE SPARE PARTS R71MHD3 and R71MHD6 Ohaus Corporation www ohaus com 62 Ranger 7000 Series Service Manual TABLE 5 4 BASE SPARE PARTS R71MHD6 AND R71MHD6 Item Number Description 6 30095903 SP MFR Loadcell 4kg R71 OZ SSS 8 30111916 _ SP PCBA Base MFR R71 O ZO SSS 30095932 SP Packaging Assembly SMART o 30095933 SP Packaging Assembly LA SG R71 _ 30078209 Box SM R71 S O Ranger 7000 Series Service Manual 63 Ohaus Corporation www ohaus com 5 5 BASE SPARE PARTS R71MHD15 and R71MHD35 Hy m I Hasen ee p i Ohaus Corporation www ohaus com 64 Ranger 7000 Series Service Manual TABLE 5 5 BASE SPARE PARTS R71MHD15 and R71MHD35 Item Number Description 6 30095903 SP MFR Loadcell 4kg R71 0000 8 30111916 _ SP PCBA Base MFR R71 0 30095932 SP Packaging Assembly SM R71 O o 30095933 SP Packaging Assembly LA SG R71 30078209 Box SM R71 S O Ranger 7000 Series Service Manual 65 Ohaus Corporation www ohaus co
7. ee o s eci Function Selection RANGER 7000 Flease select a function Restore EEPROM Download software for balance Replace Loadcell Replace Base PCB Download Software Diagnostics Figure B 11 Download Software Tab 4 You will have two options to choose Down load Base Software and Down load Terminal Software select the process you wish to perform Ohaus Repair amp Service Tool V2 1 1 2 a u Function Selection RANGER 7000 Please select a function Download Base Software Download base s software for balance Download Terminal Software B 12 Download Base Software and Download Terminal Software tab Note When downloading Terminal Software using Ohaus Repair and Service Tool the file is type mot If downloading via the USB host is type bin Ohaus Corporation www ohaus com 89 Ranger 7000 Series Service Manual 5 After making the selections enter the path to the file to download or click the Browse button to locate the file Click on the Start Download button When prompted disconnect the power from the back of the scale then re connect The software will indicate the download process When complete disconnect the power from the back of the scale then re connect 9 Perform Service Calibrations see Chapter 6 Test the scale B 8 Diagnostics 1 Connect the scale to your computer 2 Start the OHAUS Software Service Tool 3 Click on the tab labeled Diagnostics Ohaus Repair
8. housing R71 SG Base top housing removed Ohaus Corporation www ohaus com 24 Ranger 7000 Series Service Manual 3 4 2 Opening R71 small housing model R71MHD6 is used in below 6 Prepare the bases as mention above 7 Remove the weighing Pan and Wind Ring from the base Complete set of MFR base Weighing pan removed Wind Ring removed 8 Remove the 2 screws securing the Spider to the top housing Ranger 7000 Series Service Manual 25 Ohaus Corporation www ohaus com Spider removed from base top housing 9 Remove 5 screws securing the base top housing and bottom housing Ohaus Corporation www ohaus com 26 Ranger 7000 Series Service Manual 5 screw expose by removing this screw you will be able to dismantle the base top housing from the base bottom housing Ranger 7000 Series Service Manual 27 Ohaus Corporation www ohaus com Ohaus Corporation www ohaus com 28 Ranger 7000 Series Service Manual 3 5 Replacing MFR Load cell R71 Model R71MHD6 is shown below 1 Locate the 4 screws securing the MFR load cell with the base bottom housing R71 load cell type MFR 3 Remove the cable connecting the Base PCBA with MFR load cell as shown below 4 Remove the Red and White cable connecting the base PCBA with LFT PCBA Ranger 7000 Series Service Manual 29 Ohaus Corporation www ohaus com 5 Remove the cable connected from the load cell Auto Calibration motor PCBA to the main PCBA as s
9. inch Terminal Housing dimensions WxDxH Base Housing dimensions WxDxH Assembled dimensions WxDxH 11x11 280 x 420 x 114 mm 11x11 280 x 280 x 114 mm 267 x 118 x 72mm 10 5 x 4 6 x 2 8 in 377 x 311 x 128 mm x 4 5 inch 14 9 x 12 2 x 5 inch 377 x 467 x 128 mm x 4 5 inch a Shipping weight 9 2 kg 20 3 Ib ia 4 7 Ohaus Corporation www ohaus com Ranger 7000 Series Service Manual MODEL R71MD3 R71MD6 R71MD15 R71MD35 Capacity 3000 g 6000 g 15000 g 35000 g Approved ooo 0 Ore Ore 0 402g 402g 1000 g 2000 g 4000 g 6000 g Span Calibration Points 500 g 1500 g 2000 g 3000 g Weighing units units Applications 404g sq 10000 g 20000 g 30000 g 35000 g 5000 g 10000 g 15000 g gram kilogram ounce pound pound ounce ton Weighing Parts Counting Percent Weighing Check Weighing Dynamic Weighing Filling Formulation Differential Weighing Density Stabilization time typical Within 1 second Display Display size TFT Graphic LCD 4 3 in Backlight White LED Communication Power supply RS 232 USB Power Input 100 240 V 0 5 A 50 60 Hz l 280 x 280 mm 377 x 311 mm Platform size 11x11 inch 14 8 x 12 2 inch Terminal Housing dimensions W x Dx H Base Housing dimensions W x D x H Assembled dimensions W x D x H 280 x 280 x114 mm 9 4 x 9 4 x 4 5 inch 240 x 420 x 114 mm 17 4 x 16 5 x 4 5 inch 267 x 118 x 72
10. information Port com si Baud rate ee Data bits les Parity None gt Stop bits m Flow control Noe o Figure B 5 COM Port Configuration Note Make sure there is no lose connection from R71 RS232 Port during the communication process 2 3 Enter the scale s Serial Number and IDNR number Enter the path to the image file or click the Browse button to locate the file Click the Next button The software will indicate the download progress When complete disconnect the power from the back of the scale then re connect Perform Service Calibrations see Chapter 6 Test the scale Ranger 7000 Series Service Manual 84 Ohaus Corporation www ohaus com Ohaus Repair amp Service Tool W2 11 2 j I rn Write Image File RANGER 7000 Please input the following information Serial Number IDNR Image File Browse Figure B 6 Write Image File B 5 To Replace a Load Cell 7 Follow the steps in Section 3 5 and 3 6 to replace the defective load cell 8 Open the packet containing labels that was supplied with the replacement Load Cell These labels each contain a model number followed by the IDNR number Carefully select the label that matches exactly the model number of the scale 9 Get the scale Image File from OHAUS by providing the scale model and serial number 10 Put the new label on the scale 11 Power the scale from an AC adapter 12 Connect the scale to your computer 13 Start t
11. the Base modules The software revision in the scale can be seen when the scale is in standby mode or during the power up sequence The software version is displayed in the lower right hand corner of the screen The screen will show Model number for example Ranger 7000 R71MD3 Capacity and readability 3000g x 0 05g Software Revision Terminal Base Version 1 00 0 14 The scale software can also be retrieved by sending a PV command via the RS232 or other interface Ranger 7000 Series Service Manual 11 Ohaus Corporation www ohaus com 2 3 DIAGNOSTIC GUIDE 2 1 Diagnostic Guide Error data Power On Zero limit Power on Underload Power On Error Weight reading below Er Overload Over Range Error Underload limit Tare Error Tare out ofrange Error Tared at one unit but after switching to another unit the tare value exceeds the maximum digits not exist setting zero setting printing message outside allowable limits Low reference weight Average Piece Weight warning message too small Warning Reference Error Unacceptable reference Reference Weight too weight message small The weight on the pan is too small to define a valid reference weight Ohaus Corporation www ohaus com 12 Ranger 7000 Series Service Manual Diagnosis 1 Isolate and identify the symptom 2 Referto Troubleshooting tables and locate the symptom 3 Follow the suggested remedies in the order they appear 4 Perform th
12. 4 cables from the main PCBA 2 Remove the 3 screws securing the main PCBA with the base bottom housing R71 load cell type SG Ranger 7000 Series Service Manual 45 Ohaus Corporation www ohaus com 1 Remove the below cables from the main PCBA Location for the 4 cables A Cable RS422 cable from main PCBA to R71 Display Terminal B Cable Cable link from main PCBA to LFT PCBA C Cable Red White Cable link from main PCBA to LFT PCBA D Cable Load Cell cable Ohaus Corporation www ohaus com 46 Ranger 7000 Series Service Manual 2 After removing the above 4 cables now locate and remove 3 screws which securing the main PCBA to the bottom housing ea Pt j oy hl Fi vie N E 5 U i f iw Tews ree p aoea j T 1 E er x ii Ta a i 5 i ee TTT ba i Er is He fbb i Eare wy me gt N 1 LE ee ia r E a a are een f 1 Ranger 7000 Series Service Manual 47 Ohaus Corporation www ohaus com 4 TESTING Before and after servicing a Ranger 7000 scale an operational test and various performance tests should be made to confirm if the scale meets specifications Turn the scale on and allow it to warm up for at least one hour before performing these tests The Analytical models need up to 4 hours to stabilize NOTE A N Make sure the test area is free from drafts and that the scale rests on a level and vibration free surface The Analytical models especially need a soli
13. Number just above the label on the back of the scale d The load cell serial number you need to open the scale and record this information on the load cell 2 Contact Ohaus Corporation in Pine Brook NJ and request the data file to download Provide the information recorded above 3 After receiving the data file from Ohaus continue with the following steps 4 Connect the scale to the PC and start the OHAUS Software Service Tool 5 Click the tab labeled Restore EEPROM and select Write Image File and click Next Ranger 7000 Series Service Manual 82 Ohaus Corporation www ohaus com Ohaus Repair amp Service Tool V2 11 2 otat ee co Function Selection RANGER 7000 Please select a function vn EEPROM Replace Loadcell Replace Base PCB Download Software Restore EEPROM for balance Diagnostics Figure B 3 Restore EEPROM Ohaus Repair amp Service Tool W2 112 Function Selection RANGER 7000 Please select a function FR Write selected Image file into balance for he lace soe restoring EEPROM Figure B 4 Write Image File Se ee ee es ee ne T T EA aa eo ee ie sso Ohaus Corporation www ohaus com 83 Ranger 7000 Series Service Manual B 4 COM Port Configuration 1 Configure the software Com port configuration to match with the scale and click Next Ohaus Repair amp Service Tool V2 1 1 2 eee x COM Port Configuration RANGER 7000 Please contig the COM port
14. The Precision Test is a quick test that measures the deviation of a limited number of weight readings If the scale passes the precision test than the following tests should be performed Note This is a reference test for approved models OIML and NTEP It is not a required test but it can be used to determine if the scale is working properly 1 The reading on the display should be Og 2 Select a mass weighing near the maximum capacity of the scale and place it on the center of the Pan Observe and record the reading Remove the mass The reading should return to Og 1d Repeat this test three times The readings should be within 1d If so the scale passes the Precision Test lf the deviation for any set of readings using the same mass placed on the center of the Pan is greater than 1d the scale does not meet the precision specification Inspect and correct the following areas Check for mechanical obstructions Any foreign object pressing any part of the moving assemblies will cause a scale to fail the Precision Test Inspect and correct as necessary lf the scale does not meet specifications move it to a suitable location ensure that it is level and try again If it still does not meet specifications perform a service calibration and try again See Appendix B for Service Calibration lf the scale does not pass this test the Load Cell may need to be replaced Ranger 7000 Series Service Manual 49 Ohaus Corporat
15. aches Connector open with TFT ribbon cable remove 4 Disconnect the keypad overlay ribbon cable from the Terminal PCBA by unfasten the connector as shown in below pictures Ohaus Corporation www ohaus com 20 Ranger 7000 Series Service Manual TE 4 P sere a S Sere Se Shift the connector outward Connector open and keypad overlay cable remove 5 Both bottom and top Terminal housing are now separated te te Rae 47 1714 LE ee ee a el UM er elas gt ve im m a i i gt r hi Ranger 7000 Series Service Manual 21 Ohaus Corporation www ohaus com 3 4 Opening the Base Module 3 4 1 Opening R71 large housing model R71MD15 R71MD35 R71MHD15 R71MHD35 A R71MD15 is used in below 1 Prepare the bases as mention above 2 Remove the weighing Pan from the base Complete set of Large Housing base Weighing pan removed 3 Remove the 2 screws securing the Spider to the top housing Location of 2 screws securing the Spider with base top housing Ohaus Corporation www ohaus com 22 Ranger 7000 Series Service Manual Spider removed from base top housing 4 Remove 6 screws securing the base top housing and bottom housing Location of the first 6 screws Ranger 7000 Series Service Manual 23 Ohaus Corporation www ohaus com 5 The 7 screw is underneath the LFT cover 7 screw expose by removing this screw you will be able to dismantle the base top housing from the base bottom
16. al 1 GETTING STARTED 1 1 INTRODUCTION This service manual contains the information needed to perform routine maintenance and service on the Ohaus Ranger 7000 Series scales Familiarity with the scale s Instruction Manual is assumed The contents of this manual are contained in five chapters Chapter 1 Getting Started Contains information on service facilities tools specifications and the mechanical and electronic functions of the scale Chapter 2 Troubleshooting Contains a diagnostic guide and error code table Chapter 3 Maintenance Procedures Contains preventive maintenance procedures and disassembly repair and replacement procedures Chapter 4 Testing Contains a list of required test masses an operational test segment display test performance tests and adjustments Chapter 5 Drawings and Parts Lists Contains exploded views of Ranger 7000 scales identifying all serviceable components Chapter 6 Entering to Service Menu Explains method to enter to Service Menu Appendix A Communication Explains the scale communication information 1 2 SERVICE FACILITIES To service a scale the service area should meet the following requirements e Should be temperature controlled and meet scale specifications for temperature environmental requirements e Must be free of vibrations such as fork lift trucks close by large motors air currents or drafts from air conditioning heating ducts open w
17. ame Password and ConfirmPassword below show example User 1 Password 123 and ConfirmPassword 123 Ohaus Corporation www ohaus com 67 Ranger 7000 Series Service Manual New User User 1 Password er ConfirmPassword After saving the information you will be able to see the User under User Profiles Now by following step 1 to 3 you will be able to gain access into Service Menu User Profiles ID User Authority Aministrator var TS 7 5 Key in the Super password OHR71 and press Enter key you will return back to normal weighing mode Ranger 7000 Series Service Manual 68 Ohaus Corporation www ohaus com 6 Proceed to Main Menu and select Maintenance Main Menu s GLP GMP Data gt x Communication gt tj User Profiles i Event Counter gt Alibi Memory gt J Maintenance Ohaus Corporation www ohaus com 69 Ranger 7000 Series Service Manual 7 Now you will be able to see the Service Menu Maintenance gt Export Library lt a Export User Profile Bin Import Library Se Import User Profile Dr Diagnosis gt Service Menu 6 3 Under Service Menu 1 Under Service Menu you will have the below options Service Menu uo RAMP na nyt Expand 13 Factory Linear Cal Ep Firmware Update 4 Format Alibi Memory ec sh a al e RAMP value typical value range from 50 80 varies depends on models and value sho
18. amp Service Tool V2 1 1 2 lt is Function Selection RANGER 7000 Please select a function Restore EEPROM ans Replace Loadcell Raise Replace Base PCB Download Software ower Diagnostics Figure B 12 Diagnostics Tab 4 To test communications click the Print button or enter an RS232 Command String from Table 1 6 and USB Input 1 7 and click the Send button The scale will response will be shown in the box on the right Ranger 7000 Series Service Manual 90 Ohaus Corporation www ohaus com Ohaus Repair amp Service Tool V2 1 1 2 z b Diagnostics RANGER 7000 Command String Tx P P RX Froject ID RX Scale ID j 7 RX 13 00 06 11 2014 Sed Deut RX 162309 G RX Mode Weighing RX Library ID RX Library Name Figure B 13 Diagnostics Command Testing O 91 i haus Corporation www ohaus com Ranger 7000 Series Service Manual Ohaus Corporation www ohaus com 30136740 P N 30136740A 2014 Ohaus Corporation all rights reserved Registered trademark 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 this material Reproduction of this material is strictly prohibited Material in this manual is subject to change
19. d platform such as a stone table 4 1 TEST MASSES REQUIRED The masses required to test the Ohaus Ranger 7000 scales must meet the requirements of the ASTM or OIML Tolerances listed in the table Poor quality calibration masses be the can cause of frustrating diagnostics TABLE 4 1 CALIBRATION MASS VALUES Model Linearity Calibration Points OIML F1 OIML F1 OIML F1 OIML F1 OIML M1 OIML M1 OIML M1 OIML M1 Ohaus Corporation www ohaus com 48 Ranger 7000 Series Service Manual 4 1 1 OPERATIONAL TEST 1 Connect a functioning Power Adapter to the scale 2 Plug the Power Cord into a suitable power source 3 Verify that the scale start up sequence occurs properly Note any error codes 4 2LOAD CELL TEST USING RAMP To test the Load Cell using RAMP see Chapter 6 3 4 3 PERFORMANCE TESTS Accurate performance of the Ranger 7000 scale s is determined by a series of four performance tests The displayed readings are compared with the tolerances listed in Tables 1 1 Tolerance values are expressed in counts A one count difference is shown in the last digit on the scale display The following performance tests are used to evaluate scale operation before and after repairs The scale must meet the requirements specified in each test as well as the specifications listed in Table 1 1 Before proceeding with the following tests the scale should be warmed up 60 minutes and calibrated See Appendix A 4 3 1 Precision Test
20. ds that are listed at the end of the appendix The latest software service tool and support files are available on the Ohaus DMX site Please read the Service Tool Instruction Manual Part Number 30032352 which is also available on Ohaus DMX site A 1 Scale Commands The scale commands are used to send instructions to the scale Commands listed in the following table will be acknowledged by the scale The scale will return ES for invalid commands TABLE A 1 INTERFACE COMMAND LIST Command Function IP O Immediate Print of displayed weight stable or unstable P Print displayed weight stable or unstable Interval Print x Set Er mode x 1 2 25 35 N 4 Formulation 5 Percent 6 Filling f Dynamic 8 Density u M will scroll to next enabled mode Enter Header line where x template ar 1 to 5 y line number 1to 5 text header text up to 40 alp hanumeric characters Enter Footer line where x print template number 1 to 5 y line number 1 to 2 text footer text up F x y text ae nn to 40 alphanumeric characters EscR Glo reset to res Switch the platform x 1 2 The second commands listed are legacy commands which maintain compatibility with older Notes products Ranger 7000 Series Service Manual 78 Ohaus Corporation www ohaus com General Notes e Commands sent to the indicator must be terminated by a carriage return CR or a carriage return line feed CRLF e A
21. e data corruption 2 To install a new Load Cell 3 To install anew Main Printed Circuit Board PCB 4 To update the software in the scale 5 For diagnostics Install the software on a Personal Computer running Microsoft Windows NT 4 0 or later or Microsoft Windows 98 or later Insert the CD and run Setup exe After installation run the program Service amp Repair Tools The program has 2 selections select Repair Tools when performing scale repair and click Next Ohaus Repair amp Service Tool V2 1 1 2 nl a Software Selection Engish Please select a software Repair Tool for balance maintainance Service Tool Bat Next gt Figure B 1 Software Selection Ohaus Corporation www ohaus com 81 Ranger 7000 Series Service Manual B 2 Product Selection Select the appropriate product that you wish to service and click Next Ohaus Repair amp Service Tool V2 11 2 ar Zu aot i Sl Product Selection Repair Tool Please select 3 product ADVENTURER PRO 7 PIONEER ADVENTURER MB35 45 MOISTURE MB2X MOISTURE SCOUT PRO NAVIGATOR VALOR 3000 DEFENDER 5000 7000 VALOR 7OR0 RANGERICOUNT 2000 3000 RANGER 7000 a Figure B 2 Product Selection B 3 To Restore the EEPROM data 1 Record the following information from the scale to be repaired Serial Number from the label on the back of the scale b Model Number from the label on the back of the scale C IDNR
22. e indicated checks or see the appropriate section of the manual 5 Repair or replace the defective section of the scale NOTE lf more than one symptom is observed approach one area at a time and remember that the symptoms may be interrelated If a problem arises that is not covered in this manual contact Ohaus Corporation for further information Ranger 7000 Series Service Manual 13 Ohaus Corporation www ohaus com 3 MAINTENANCE REPAIR PROCEDURES 3 1 PREVENTIVE MAINTENANCE Ohaus scales are precision instruments and should be carefully handled stored in a clean dry dust free area and cleaned periodically Follow these precautionary steps e When a scale has had chemicals or liquids spilled on it all exterior surfaces should be cleaned as soon as possible with warm water on a damp cloth e Do not leave a mass on the scale when the scale is not in use e Allow time for the scale to stabilize after moving it from an area which is at a different temperature than the area where it is to be operated Allow one hour for each 5F 2 70 temperature change before using the scale After temperature stabilization allow an additional 60 minutes after turning the scale on for the scale electronics to stabilize Preventive Maintenance Checklist The scale should be inspected and checked regularly as follows 1 2 3 4 Remove the Pan and Sub Pan to inspect and clean the area beneath the Pan Clean the outside of the scale u
23. ed Black Cable from main PCBA to LFT PCBA B Cable RS422 Cable from main PCBA to R71 Display Terminal C Cable Cable from main PCBA to LFT PCBA D Cable Cable from MFR cell to main PCBA E Cable Cable from AutoCal motor PCBA to main PCBA Ranger 7000 Series Service Manual 39 Ohaus Corporation www ohaus com 2 After removing the above 5 cables now locate and loosen 2 screws which securing the LFT PCBA to the bottom housing Screw at Lock position Screw at Un Lock position Once you set the two screws in Un Lock position you will be able to remove the Main PCBA from the bottom housing Ohaus Corporation www ohaus com 40 Ranger 7000 Series Service Manual 3 7 4 Removing MFR LFT PCBA R71 R71MHD3 R71MHD6 R71MHD15 amp R71MHD35 Model R71MHD6 is shown below 1 Remove the 5 cables from the LFT PCBA 2 Loosen the 2 screws securing the LFT PCBA with the base bottom housing 1 Remove the below 5 cables from the LFT PCBA Location for the 5 cables A Cable Cable link from LFT PCBA to optional rechargeable battery B Cable Cable link from LFT PCBA to ON OFF Switch C Cable Cable link from LFT PCBA to Main PCBA D Cable Black While cable link from LFT PCBA to AC Adapter E Cable Red White Cable from LFT PCBA to Main PCBA Ranger 7000 Series Service Manual 41 Ohaus Corporation www ohaus com 2 After removing the above 5 cables now locate and loosen 2 screws which securing the LFT PCBA to the bottom housing
24. eed are appended to the printout Ohaus Corporation www ohaus com 79 Ranger 7000 Series Service Manual A 3 3 Printout string for the Ib oz unit a EZ LE ARE DE EEE EN ED EN HE EHE e The printout string has a fixed length of 28 characters e Each Space field is a delimiting space used to separate the other fields The Weight1 field is 4 right justified characters If the value is negative the character is located at the immediate left of the most significant digit The Unit1 field is 2 left justified characters The Weight2 field is 7 right justified characters The Unit2 field is 2 left justified characters The Stability field is 1 character A space is printed if the weight value is stable A is printed if the weight value is not stable e The G N field is 1 character G is printed for a gross weight N is printed for a net weight e The Message field is 5 left justified characters Note The Termination Characters Carriage Return and Line Feed are appended to the printout Ranger 7000 Series Service Manual 80 Ohaus Corporation www ohaus com APPENDIX B SOFTWARE SERVICE amp REPAIR TOOL INSTRUCTIONS Note Make sure OHAUS Service amp Repair Tools is version V2 1 1 1 or later which is available for down load in DMX under Service Software folder B 1 Software Installation and Software Selection The OHAUS Software Service amp Repair Tool is used for 5 purposes 1 Torestore EEPROM data if there is any possibl
25. es and the Load cell Take special care to route the wires and cables according to their original positions Proper routing is important for RFI ESD performance Ensure that the wires or cables are not pinched during re assembly Ranger 7000 Series Service Manual 33 Ohaus Corporation www ohaus com 3 7 REPLACING THE PRINTED CIRCUIT BOARD ASSEMBLIES PCBA Before working with the exposed PCBAs appropriate ESD protection must be taken to prevent damage to the sensitive electronic components It is recommended that a conductive mat with wrist straps be used when working with electronic components 3 1 Terminal A Separate the Terminal PCBA from the bottom housing by removing 4 screws one 8PIN connector on top of the PCBA and another 2 screws securing the RS232 port to the bottom housing Located at the back of the Terminal Location of the 4 screws and 8PIN connector on the Terminal PCBA B Remove the 8PIN connector by gently pulling up the connector Showing 8PIN Connector attached and detached from Terminal PCBA Ohaus Corporation www ohaus com 34 Ranger 7000 Series Service Manual C Removing the 2 screws securing the RS232 Port to the bottom housing R71 RS232 port located behind the Terminal fe ote een 7 25770007 m a N SA NEE ANDERE ER u ee a we 2 screws securing the RS232 port against the Terminal housing removed Remember to place back these 2 screws after repairing Ranger 7000 Series Serv
26. he OHAUS Service Tool Software 14 Click on the tab labeled Replace Loadcell Ohaus Corporation www ohaus com 85 Ranger 7000 Series Service Manual Ohaus Repair amp Service Tool V2 1 1 2 lel me Function Selection RANGER 7000 Please select a function Restore EEPROM Replace loadcell for balance Replace Loadcell Replace Base PCB Download Software Diagnostics Figure B 7 Replace Loadcell Tab Ohaus Repair amp Service Tool V2 1 1 2 ba Replace Loadcell RANGER 7000 Please input the following information Serial Number IDNR Model Number Temperature Reference Celsius Shipping Country AP 7 Figure B 8 Function selection Replace Loadcell 15 Configure the Com Port Configuration B 2 and click Next 16 Key in the scale serial number Model number Temperature Reference in Celsius and select your region AP EU GB or US 17 Enter the IDNR number xxx xx xx xxxx from the label on the back of the scale or from the packet label of the new load cell 18 Click the Start button Ranger 7000 Series Service Manual 86 Ohaus Corporation www ohaus com 19 The software will indicate the download progress When complete disconnect the power from the back of the scale then re connect 20 Perform Service Calibrations see Appendix B Test the scale B 6 Install New Main Printed Circuit Board PCBA 1 Follow steps in Sections 3 7 3 and 3 7 6 to replace the PCBA Then connect the scale to yo
27. hey R71MD6 must be placed uniformly over the segment The test positions A D must be centrally located in each segment Round Pan Rectangular Pan Procedure Set AZT Auto Zero Tracking to off This setting is located in Menu Scale Setup AZT menu Place the test weight in the center of the Weighing Pan Tare the scale Move the weight to location A and record the reading when stability indicator comes on Move the weight to location B and record the reading Move the weight to location C and record the reading Move the weight to location D and record the reading Sn p DE SS YS Maximum allowable change in displayed weight readings for each of the four positions can be found in Specifications Tables Chapter 1 If this maximum is exceeded verify the test conditions and retest the scale If there is no improvement the load cell must be replaced Ranger 7000 Series Service Manual 53 Ohaus Corporation www ohaus com Note In high resolution scales Class I it may be necessary to zero or tare between each location Ohaus Corporation www ohaus com 54 Ranger 7000 Series Service Manual 5 PARTSLISTS amp DIAGRAMS This section of the manual contains parts lists and exploded views for the Ranger 7000 scale s These are designed to identify the parts which can be serviced on the scale in the field The parts list and exploded views are separated into separate sections for the Terminal and the Base To order spare pa
28. hown below Ohaus Corporation www ohaus com 30 Ranger 7000 Series Service Manual 6 After removing the 3 cables mention above the next step would be removing the 4 screws which are securing the MFR load cell from the base bottom housing Once these 4 screws are removed you can securely remove the cell from the base Location of the screws securing the MFR cell from the base bottom housing Re Assembly Reverse the disassembly procedure to assemble the scale Ensure that there is no foreign material between the Base mounting surfaces and the Load cell Take special care to route the wires and cables according to their original positions Proper routing is important for RFI ESD performance Ensure that the wires or cables are not pinched during re assembly Ranger 7000 Series Service Manual 31 Ohaus Corporation www ohaus com 3 6 Replacing SG Load cell R71 Model R71MD15 is shown below 1 Locate the 2 screws securing the SG load cell with the base bottom housing R71 load cell type SG 2 Remove the cable connecting the Base PCBA with SG load cell as shown below Ohaus Corporation www ohaus com 32 Ranger 7000 Series Service Manual 3 By holding the load cell in one hand unscrew the 2 screws which securing the SG load cell located at the bottom of the base housing Re Assembly Reverse the disassembly procedure to assemble the scale Ensure that there is no foreign material between the Base mounting surfac
29. ice Manual 35 Ohaus Corporation www ohaus com Terminal PCBA taken out from Terminal bottom housing 3 7 2 Remove the TFT PCB A Remove the two screws holding the TFT in place as shown below Location of the 2 screws holding the TFT in place against the Terminal Top housing Note the position of the two RED holders Ohaus Corporation www ohaus com 36 Ranger 7000 Series Service Manual Correct RED holder position Wrong RED holder position 2 screws and Red Holder removed B Gently remove the TFT from the top housing and place in a secure area When re installing the TFT PCB make sure the surface on the TFT PCB and Top housing is clean and free from dust and debris Ranger 7000 Series Service Manual 37 Ohaus Corporation www ohaus com TFT PCB removed from Terminal Top housing R71 4 3 TFT Display PCB P N 30095940 Ohaus Corporation www ohaus com 38 Ranger 7000 Series Service Manual 3 7 3 Removing MFR Main PCBA R71 R71MHD3 R71MHD6 R71MHD15 amp R71MHD35 Below show model R71MHD6 1 Remove 5 cables from the main PCBA 2 Loosen the 2 screws securing the main PCBA with the base bottom housing 1 Remove the below cables from the main PCBA m B z ng m en i 4 u 5 iig A a e j SS a Yu u a ee G SEE Zi Zn a YN m ne von oA a eS U c PE i i f TE N p a f J A a a ce ar Location of the 5 cables on the main PCBA A Cable R
30. ided 3 Remove the mass from the platform 4 Repeat this test starting at Step 1 until you record a total of ten readings Fill in the worksheet with the ten 10 readings Ohaus Corporation www ohaus com 50 Ranger 7000 Series Service Manual TABLE 4 2 REPEATABILITY WORKSHEET n Reading Delta Reading Mean Delta x Delta n number of Reading Mean Sum of readings 10 Delta Reading Mean Standard Deviation Square Root of sum of Delta x Delta 9 5 Add the ten readings and divide the total by 10 to find the Mean average Mean Reading 1 Reading 2 Reading 3 Reading 4 Reading 5 Reading 6 Reading 7 Reading 8 Reading 9 Reading 10 10 Mean 6 Calculate the Delta for each reading and record in the work sheet Delta Reading Mean Calculate the Delta x Delta for each reading and record in worksheet 8 Add the ten Delta x Delta values and divide by 9 Calculate the Standard Deviation by applying the square root of the result from step 8 Standard Deviation Note If the scale does not meet specifications check environmental conditions ensure that the scale is level and try again If it still does not meet specifications perform a service calibration and try again See Appendix B for Service Calibration Ranger 7000 Series Service Manual 51 Ohaus Corporation www ohaus com Repeatability Test Approved models This test is a variation of the test above Rather than dete
31. inal 2 Removing the docking bracket from the Terminal Ohaus Corporation www ohaus com 16 Ranger 7000 Series Service Manual 3 Flipthe Terminal around locate the 3 screws as shown and remove the screws which are mounting the bracket to the Terminal as shown below and separate the docking bracket from the Terminal Ranger 7000 Series Service Manual 17 Ohaus Corporation www ohaus com 3 3 3 Dismantling the Terminal housing 1 Remove the 5 screws securing the housing e 4 screws are located underneath the rubber cover at 4 corners of the bottom housing Remove the rubber cover and you will be able to locate and remove the 4 hidden screws Ohaus Corporation www ohaus com 18 Ranger 7000 Series Service Manual 8 a a 2 After removing the screws which are securing the bottom housing with the top housing turn the terminal module over After that carefully lift up the top housing DO NOT remove the top housing completely away from the bottom housing because the Terminal keypad overlay ribbon cable and TFT display ribbon cable are still attached with the Terminal main PCBA Ranger 7000 Series Service Manual 19 Ohaus Corporation www ohaus com 3 Disconnect the ribbon cable connecting the TFT with Terminal PCBA by using a thin screw driver blade radiated the back cable lock on the connector 90 so that it is perpendicular to the cable as show in below pictures Connector lock with ribbon cable att
32. indows people walking by fans etc e Area must be clean and free of excessive dust e Work surface must be stable and level e Scale must not be exposed to direct sunlight or radiating heat sources e Handle all electronic assemblies with appropriate Electro Static protection Ohaus Corporation www ohaus com 4 Ranger 7000 Series Service Manual 1 3 TOOLS AND TEST EQUIPMENT REQUIRED e Common hand tools are sufficient to disassemble the Ranger 7000 scales e APC running Microsoft Windows XP or later e Ranger 7000 Software Service Tool PN 83032124 e RS232 Cable Scale to PC PN 80500525 e Digital voltmeter DVM with an input impedance of at least 10 meg ohms at 1 volt DC e Masses as shown in Table 4 1 1 4 SPECIFICATIONS Specifications for the Ohaus Ranger 7000 Scales are listed in Table 1 1 When a scale has been serviced it must meet the specifications listed in the table Before servicing the scale determine what specifications are not met Special Note regarding Approved scales The specifications for the approved scales below are only for initial testing These scales must be tested according to the requirements of the local Weights and Measures authority Before returning the scale to service an approved representative of the local Weights and Measures authority must certify the scale Ambient conditions Indoor use only Altitude Up to 2000 m Specified Temperature range 10 to 30 R71MH D3 6 15 35 model
33. ing the value first and then pressing this button the number input will be set to preset Tare value Current Mode Capacity Max6000 g d 0 1g gt 12 00 AM 01 01 1970 7 Stability Gross amp NET for net indicator PCS Preset Tare Reference Field gt Counting Assistance Information Main Weight Field Capacity or Status Guides Vary by application Function Icons related to Smart buttons Ranger 7000 Series Service Manual 9 Ohaus Corporation www ohaus com 1 5 2 Principle Functions and Main Menu 1 2 Menu and Screen Navigation Press the Menu ot button to open the menu list Press the button below in u and to move down and up the list respectively eh nighlis FE Press eee move back to pre Calibration Select to view calibration options 2E Main Menu Setup a Calibration Select to view user preferences x Setup Read Out W Application Mode pr Er 7 Application Modes gt Weighing Unit Select to view appl cation modes ts GLP GMP Data Ykg Weighing Units a Te Select to view weighing units Alibi Memory Select to view Alibi Memory settings Note This menu ts only displayed when the Alibi option is installed GLP and GMP Data Insert user data for traceability Communication i Maintenance Select to view communication settings Select to view Maintenance settings User Profile Event Counter Select to view User Profile settings Select to view Maintenance setting
34. ion www ohaus com 4 3 2 Repeatability Test non approved models The repeatability specification is defined as the Standard Deviation value derived from a set of weight readings This test uses more weight data than the Precision Test and will allow for occasional weight deviations due to testing variations Note The required method for approved models OIML and NTEP is shown in the following section Requirements e To perform this test a single mass must be used for all readings e The test mass should be approximately 1 2 of the capacity of the instrument e Wear gloves when handling the mass Set Up Before starting a repeatability test set up the instrument as follows Enter the service menu see Chapter 6 and adjust and record the following settings e Set the Stability setting to 0 5d its lowest setting e Set the Filter level to Middle e Set the AZT Auto Zero Tracking to 5d its lowest setting Do not turn it off Enter the User Menu see 1 8 1 and adjust the following settings e Set ithe instrument to display the same units as the performance specifications Usually kg g or mg Record Test Parameters e Stability Setting e Filter Level Setting e Auto Zero Tracking Setting e Displayed Units e Mass Used Test Procedure 1 Zero the instrument 2 Using atest mass approximately half the capacity of the instrument place the mass on the center of platform Record the reading on the worksheet prov
35. lternate command characters may be defined by the user e Data output is always terminated with a carriage return line feed CRLF e There is 40 second timeout control for print under stable requirement If the unstable condition continues over 40 seconds scale will respond ES A 2 RS232 DB9 Pin Connections RS232 DB9 Pin Connections Pin 2 Scale transmit line TxD Pin 3 Scale receive line RxD Pin 5 Ground signal GND Pin 7 Clear to send hardware handshake CTS Pin 8 Request to send hardware handshake RTS P RTS Use the built in RS 232 Port to connect either to a computer or a printer A 3 USB Host The USB Host can be used to connect a barcode scanner and USB flash drive to the Ranger 7000 A 3 1 Printout Format A 3 2 Printout string for 9 kg Ib oz units 20 Lengh 9 1 J3 1 J1 J1 J1 1 5 e The printout string has a fixed length of 23 characters e Each Space field is a delimiting space used to separate the other fields e The Weight field is 9 right justified characters If the value is negative the character is printed at the immediate left of the most significant digit e The Unit Mode field is 3 left justified characters e The Stability field is 1 character e The G N field is 1 character G is printed for a gross weight N is printed for a net weight e The Message field is 5 left justified characters Note The Termination Characters Carriage Return and Line F
36. m 6 ACCESSING THE SREVICE MENU 6 1 Accessing the Service Menu Super Password With any User you created in User Profiles by pressing and holding the 0 User key during weighing mode you will be able to select the pre set User Profiles By keying the Super Password OHR71 you will be able to see Service Menu under Maintenance Diagnosis as shown below 1 Press and hold 0 User button you will see the preset User Profiles _ UserLogin a MEIE WR Authority 1222 ABC Der 4 5 GHI JKL OHAUS 5 i pars Tuv wxyz Bau G eS le Lue User 2 By selecting the far right button you will come to the below window screen UserLogin User eres 3 Key in Super Password OHR71 you will be able to gain access into Service Menu Ranger 7000 Series Service Manual 66 Ohaus Corporation www ohaus com 6 2 Creating UserLogin 1 If you are unable to see the above User Login after you long press 0 User key this mean there is no user profile database been created and you need to create the user profile 2 Proceed to Menu and select User Profile Main Menu a GLP GMP Data gt x Communication gt User Profiles i1 Event Counter gt s Alibi Memory gt Maintenance w ave a ys 3 Start keying in your user profile information by selecting the add record button User Profiles ID User Authority 4 Key in the User n
37. mm 10 5 x 4 6 x 2 8 in 377 x 311 x 128 mm 14 9 x 12 2 x 5 inch 377 x 467 x 128 mm To Tan Shipping weight 8 5 kg 18 7 Ib is 4 a 29 5 Ranger 7000 Series Service Manual 7 Ohaus Corporation www ohaus com 1 5 OPERATION 1 5 1 Overview of the Controls Max 6000 g d 0 1 g s Weighing 12 00 AM 01 01 1970 2 G 5 erg 7 8 9 PORS TUV WXYZ k hg CLR w Ohaus Corporation www ohaus com 8 Ranger 7000 Series Service Manual Action In Enter Exit the library menu Switch between available application modes Send the measurement data to available communications ports according to current settings Display information about Application Mode Library User and Menu Enter Exit the User menu Switch the main weighing unit between the available units Short Press Input 2 9 9 To Enter A press LAE 2 times For lower case Z press 5 times 2 FA Short Press Input 0 Long Press Go to User Login screen Short Press Input 1 eek Long Press Switch platform between scale 1 and scale 2 sul Bas CLR Short Press Clear character string when editing string iz If no input is active clear the current active library When there is no value added pressing this button will switch the value sign between positive and negative Short Press Input space _ To Enter _ press E 3 times gt 0 lt i Perform Zero operation Perform Tare operation gt Te When enter
38. re the right object files were put in the connected USB flash drive Base image found Current Terminal 1 03 Terminal image found Current Base 1 00 02 lf the USB Flash drive is not plug in you will see the below message USB flash drive is not connected Base image found Current Terminal 1 03 Terminal image found Current Base 1 00 02 e Format Alibi Memory Formatting Erasing Alibi memory Service Menu Au RAMP A ry Expand 3 Factory Linear Cal J Firmware Update Es Format Alibi Memory Ranger 7000 Series Service Manual 72 Ohaus Corporation www ohaus com 6 4 Maintenance Diagnostic 1 Under Diagnostic you will have the below options Maintenance b gt Export Library 3 gt Export User Profile Bin Import Library Import User Profile v4 Diagnosis 2 Service Menu Menu a DD Diagnosis LCD 3 KEY e LCD diagnostic 4 diagnostic test will be perform on the color LCD screen for RED Green Blue color test and BackLight Test 73 i Ohaus Corporation www ohaus com Ranger 7000 Series Service Manual e 4 key tests testing the functionality of the keypad membrane the below 4 keys will be tested during this diagnostic 1 2 3 en 1222 apc DEF Press the following button to continue 2 EI User 1 2 3 el z22 ABc DEF Press the following button to continuel S k GHI JKL ne BE ra RA EA k n i 0
39. rmining acceptance based on the standard deviation of the errors MPE is used The other variation is that 2 series of weighings are used one near 50 of max and the other near 100 of maximum capacity 1 See Table 1 1 to determine the two weight values that must be used 2 Record 10 reading using each weight value Zero the scale between each reading if necessary 3 The difference between the results of the 10 readings must be less than the absolute value of the Maximum Permissible Error MPE for the load The MPE for each load in grams is given in Table 1 1 4 3 3 Linearity Test This test is used to determine the linearity of the unit throughout its operating range The masses used to perform this test can be utility masses This is a reference test for approved scale s as there is no linearity specification The approved models should be able to pass this test so it is still valid to determine scale performance A NOTE The scale must pass the Precision and Repeatability Tests and be calibrated before the Linearity Test is performed TABLE 4 3 LINEARITY TEST REFERENCE AND LOAD MASSES Model load1 Load2_ Load 3 R71MHD3 oka 1 1skg ake R71MHD6 Ooko 3kg 6ks R71MHD15 Okg 10kg 15kg Rrapos og 20e 35ke Ramos og isie ae Rmo og se oe Rimon og aoe aske ravamo3s og 20e 35ke NOTE All masses are nominal values Be certain to use the same reference mass throughout the
40. rts identify the required item in the exploded views and parts list then use the Spare Parts List to obtain the current part number for this item NOTE In all cases where a part is replaced the scale must be thoroughly checked after the replacement is made The scale MUST meet the parameters of all applicable specifications in this manual lf further technical information is needed please contact your local Ohaus office or www ohaus com Ranger 7000 Series Service Manual 55 Ohaus Corporation www ohaus com 5 1 TERMINAL SPARE PARTS li Q Q Ranger 7000 Series Service Manual 56 Ohaus Corporation www ohaus com TABLE 5 1 TERMINAL SPARE PARTS Item Number Description 6 30095907 SP Hardware Kit R7 O Ranger 7000 Series Service Manual 57 Ohaus Corporation www ohaus com 5 2 BASE SPARE PARTS R71MD3 and R71MD6 aes ae sr ar en T Ohaus Corporation www ohaus com 58 Ranger 7000 Series Service Manual TABLE 5 2 BASE SPARE PARTS R71MD3 AND R71MD6 Item Number Description 6 30095937 SP SG Loadcell 5kg R71 OZ oOo o 8 30095909 SP PCBA Base SG R71 2000000 30095932 SP Packaging Assembly SMART o 30095933 SP Packaging Assembly LA SG R71 _ 30078209 Box SM R71 S O Ranger 7000 Series Service Manual 59 Ohaus Corporation www ohaus com 5 3BASE SPARE PARTS R71MD15 and R71MD35 Ohaus Corporation www ohaus com 60 Ranger 7000
41. s Ohaus Corporation www ohaus com 10 Ranger 7000 Series Service Manual 2 DIAGNOSTIC GUIDE This section of the manual contains troubleshooting information Information is contained to isolate specific problems using Table 2 1 Diagnostic Guide Follow all directions step by step Make certain that the work area is clean Handle scale components with care Use appropriate electro static protection devices to prevent damage to the sensitive electronic components 2 1 TROUBLESHOOTING General procedures for Troubleshooting 1 Do the most obvious user level remedies 2 Visual Check Check that the internal parts are clean and free from debris Examine the scale for damage or signs of abuse replace any damaged items Use the error code table for solutions for specific codes Use the Diagnostic Guide locate the symptom then follow the suggested remedies in order Note Allow equipment to warm up for 60 minutes on precision models for optimal weighing performance Allow 4 hours for analytical models to stabilize 2 2 SOFTWARE In most cases understanding the customer s problem with the scale is easy Physical damage displayed error code failure to power up and obvious poor performance can usually be repaired by following the instructions in the following sections Some scale issues may be software related New releases of the software may correct these issues The Ranger 7000 Scale has upgradeable software in the Terminal and
42. s 10 to 40 R71MD3 6 15 35 models Humidity maximum relative humidity 80 for temperatures up to 30 decreasing linearly to 50 relative humidity at 40 Mains supply voltage fluctuations up to 10 of the nominal voltage Installation category II Pollution degree 2 Operability is assured at ambient temperatures between 5 to 40 Materials Base Housing die cast Aluminum Painted Terminal housing die cast Aluminum Painted Weighing Pan 304 Stainless Steel Ranger 7000 Series Service Manual 5 Ohaus Corporation www ohaus com TABLE 1 1 SPECIFICATIONS MODEL R71MHD3 R71MHD6 R71MHD15 R71MHD35 Capacity 3000 rs 6000 ne 15000 ru 35000 me Readabilityd Readabilityd 0 01 001g 002g og Ag Approved Readability e ee ae Er a a 20 029 0 02 20 029 Span Calibration Points 500 g 1500 g 2000 g 3000 g Weighing units units Applications Stabilization time typical Display 30049 0 04 30049 1000 g 2000 g 4000 g 6000 g 2029 402g 10000 g 20000 g 30000 g 35000 g 5000 g 10000 g 15000 g gram kilogram ounce pound pound ounce ton Weighing Parts Counting Percent Weighing Check Weighing Dynamic Weighing Filling Formulation Differential Weighing Density Within 1 second Display size Bim Backlight White LED Power supply RS 422 USB Power Input 100 240 V 0 5 A 50 60 Hz 240 x 240 mm 377 x 311 mm Platform size 9 4 x 9 4 inch 14 8 x 12 2
43. sing a damp cloth with warm water Check the Power Cord for broken or damaged insulation Make a visual inspection for faulty connectors wiring and loose hardware CAUTION A N DO NOT USE CHEMICAL CLEANERS OR SOLVENTS OF ANY TYPE SOME CLEANERS ARE ABRASIVE AND MAY AFFECT THE SCALE S FINISH Ohaus Corporation www ohaus com 14 Ranger 7000 Series Service Manual 3 2 OPENING THE SCALE Opening the Ranger 7000 scale varies slightly according to the specific model as detailed below Use these procedures in order to replace the Load Cell the Printed Circuit Board or other components Common hand tools are sufficient to disassemble the Ranger 7000 scale s 3 2 1 Preparation for Opening Ranger 7000 Models 1 Turn the scale off and unplug the power cord before you begin 2 Disconnect any communication or other option cables 3 3 OPENING THE TERMINAL MODULE Below show a Ranger 000 MFR small housing model R71MHD6 3 3 1 Detaching the Terminal from the base 1 Switch off and disconnect the scale from main power supply 2 Detach the display terminal from the base by pressing both release buttons at the same time as show below picture After that pull the Terminal towards you outward until the Terminal is detached from the base as show below Ranger 7000 Series Service Manual 15 Ohaus Corporation www ohaus com 3 3 2 Detaching the base RS422 cable from the Terminal 1 Dismantle the base RS422 cable from the Term
44. uld not be 0 or 100 e Expand For R and D usage e Factory Linear Cal Using external weights to perform linearity calibration follow screen instruction Ranger 7000 Series Service Manual 70 Ohaus Corporation www ohaus com en Max6000g d 0 1q wm Weighing 00 00 o1 01 1970 3 Factory Linear Cal Firmware Update Format Alibi Memory a Note When downloading Terminal Software using Ohaus Repair and Service Tool the file is type mot If downloading via the USB host is type bin The software need to be put in the R71_FW folder under the root folder of the flash driver otherwise the terminal will not be able to locate the bin file Ohaus Corporation www ohaus com 71 Ranger 7000 Series Service Manual 1 Create a R71_FW folder at the root folder of a flash driver Put following files into the folder a oe t Computer Local Disk C RYLPW Organize Include in library Share with Burn New folder Uy Ohaus Repai Name Date modified Type u OHCS Staff AR 5 Eh _ BaseMFR mot 2014 1 17 10 01 MOT File Wi OHSEA Fi _ BaseSG mot 2014 1 21 15 25 MOT File I PDS Product Be _ Terminal bin 2014 1716 15 13 BIN File d Phase out sp P Print Analyz e When you plug in the USB flash drive into the R71 terminal with the respective bin file in it you will be able to see the below example information once you select the Firmware Update option Make su
45. ur computer Start the OHAUS Service and Repair Tool Software Click on the tab labeled Replace Main PCBA Ohaus Repair amp Service Tool W2 112 el po Function Selection RANGER 7000 Please select a function Restore EEPROM Replace base s PCB for balance Replace Loadcell Replace Base PCB Download Software Diagnostics Figure B 9 Replace Main PCBA Tab Ohaus Corporation www ohaus com 87 Ranger 7000 Series Service Manual Ohaus Repair amp Service Tool V2112 ji Replace Base PCB RANGER 7000 Please input the following information Serial Number IDNR Model Number Shipping Country AP x Figure B 10 Function Selection Replace Main PCB Enter the Serial Number from the label on the side of the scale Enter the IDNR number xxx xx xx xxxx from the label on the back of the scale Key in the Model number and Shipping Country AP EU GB or US Click the Start button The software will indicate the download progress When complete disconnect the power from the back of the scale then re connect SS eo m 9 Perform Service Calibrations see Chapter 6 Test the scale Chapter 4 Ranger 7000 Series Service Manual 88 Ohaus Corporation www ohaus com B 7 Update the Software in the Scale 1 Connect the Scale to your computer 2 Startthe OHAUS Service Tool Software 3 Click on the tab labeled Download Software Ohaus Repair amp Service Tool V2 1 1 2 Ga 5 mn wi a ww
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