OHAUS EXPLORER Service Manual
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OHAUS EXPLORER Service Manual

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SERVICE MANUAL
EXPLORER
EXPLORER
VOYAGER
Ohaus Corporation 19A Chapin Road, P.O. Box 2033, Pine Brook, NJ 07058-2033 (973) 377-9000
®
BALANCES
®
PRO BALANCES
®
BALANCES

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  • Page 1 SERVICE MANUAL ® EXPLORER BALANCES ® PRO BALANCES EXPLORER ® VOYAGER BALANCES Ohaus Corporation 19A Chapin Road, P.O. Box 2033, Pine Brook, NJ 07058-2033 (973) 377-9000...
  • Page 3 HIGH CAPACITY ANALYTICAL 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.

  • Page 5: Table Of Contents

    CHAPTER 2 DIAGNOSIS 2.1 Troubleshooting ..................2-1 2.2 Diagnostic Guide ..................2-1 2.2.1 Diagnosis ..................2-1 2.3 Explorer / Voyager Error Code Table ............2-3 2.4 Explorer Pro Error Code Table ............... 2-5 CHAPTER 3 REPAIR PROCEDURES 3.1 Repair Procedures .................. 3-1 3.1.1 Analytical Load Cell Removal ............
  • Page 6 3.2.8 Display Printed Circuit Board ............3-26 3.2.9 Membrane Switch Replacement ........... 3-27 3.2.10 Replacing the Display ..............3-28 3.2.11 Removing the Display Module Voyager and Explorer Pro Models 3-29 3.2.12 Display PCB/LCD Assembly Replacement ........3-30 3.2.13 Bulb Replacement ................ 3-31 CHAPTER 4 TESTING 4.1 Testing...
  • Page 7 5.2.9 Explorer Display Parts List ............5-19 5.2.10 Explorer High Capacity Parts list ..........5-21 5.2.11 Explorer Pro, Voyager Display Parts List ........5-23 5.2.12 Voyager, Explorer Pro, High Capacity Parts List ......5-25 APPENDIX A - EXPLORER EP LOADER A.1 Requirements for EP Loader..............A-1 A.2 Limitations...
  • Page 8 C.3 Manufacturing Weight Calibration (MFgWt) Procedure ......C-2 APPENDIX D - REPLACING BOTTOM DISPLAY BOARD D.1 Replacing the Bottom Display Board on Voyager, Explorer Pro and Voyager Pro Balance ..................D-1 D.2 Explorer Pro, Voyager and Voyager Pro flash Instructions ....D-1 LIST OF TABLES TABLE NO.
  • Page 9 Position Sensor Connections ............3-18 3-26 Display Removal/Installation for Explorer Precision Top Loader Balance ..................3-25 3-27 Display Removal/Installation for Explorer High Capacity Top Loader Balance ..................3-26 3-28 Rear View of Display PCB Assembly ..........3-27 3-29 Membrane Switch Cable Routing ............ 3-28 3-30 Display Removal/Installation ............
  • Page 10 Exploded View of Explorer High Capacity Display ......5-20 5-10 Exploded View of Explorer Pro, Voyager Display ......5-22 5-11 Exploded View of Voyager, Explorer Pro High Capacity Display ..5-24 RF Shield ..................A-3 Personality Data ................A-3 TC Data ..................

  • Page 11: Chapter 1 Introduction

    The service strategy for Explorer balances is the replacement of PC boards, membrane switches and most case parts. The transducers are to be repaired. Only parts listed in the parts list are replaceable.

  • Page 12: Service Facilities

    Chapter 4 Testing - Contains an operational test, a segment display test and performance tests. Chapter 5 Drawings and Parts Lists - Contains exploded view drawings with associated parts lists. Appendix A Explorer EP Loader-Contains information on loading software to place the Explorer balance in a manufacturing mode to download temperature and personality data.

  • Page 13: Tools And Test Equipment Required

    CHAPTER 1 INTRODUCTION 1.3 TOOLS AND TEST EQUIPMENT REQUIRED In order to properly service the Ohaus Explorer balances, certain Ohaus special tools and test items are required in addition to standard electronic tool kits. These items are listed as follows: 1.3.1 Special Tools...

  • Page 14: Specifications

    CHAPTER 1 INTRODUCTION 1.5 SPECIFICATIONS Complete specificatons for the Ohaus Explorer balances are listed in Tables 1-2, 1-3 and 1-4. When a balance has been serviced, it must meet the specifications listed in the table. Before servicing the balance, determine what specifications are not met.

  • Page 15: Chapter 2 Diagnosis

    In the event that erratic or fluctuating weight readings are observed, it is necessary to isolate the problem to either the mechanical area or the electronic area of the balance. If a problem arises that is not covered in this manual, contact: Ohaus Corporation 19A Chapin Road P.O. Box 2033...
  • Page 16 CHAPTER 2 DIAGNOSIS TABLE 2-1. DIAGNOSTIC GUIDE SYMPTOM PROBABLE CAUSE(S) REMEDY Unit will not turn on. Check/replace power cord connec- Power cord not plugged in or properly tions. connected to balance or defective. Check display module connections. Display module not connected prop- erly.

  • Page 17: Explorer / Voyager Error Code Table

    2.3 EXPLORER / VOYAGER ERROR CODE TABLE The Explorer and Voyager balances are equipped with software which will display an error condition when it occurs. Table 2-2 Explorer/Voyager Error Codes, describes the various error codes which can appear on the display and specifies the probable reason and remedy.
  • Page 18 Displays Err 9.4 Factory internal calibration data failed checksum. Perform MFG and MFGWT. If the problem persists reload the TC data. If the problem still persists the main PCB must be reconfigured at Ohaus. Displays Err 9.5 Factory calibration data failed checksum. Perform MFG and MFGWT. If the problem persists reload the TC data.

  • Page 19: Explorer Pro Error Code Table

    CHAPTER 2 DIAGNOSIS 2.4 EXPLORER PRO ERROR CODE TABLE TABLE 2-4. EXPLORER PRO ERROR CODES Displays Error 1.0 Usually caused by static discharge. If the error persists replace the PCB Displays Error 1.1 Temperature channel duty cycle out of range. Failed temperature sensor or broken wire between the temperature sensor and the PCB Displays Error 2.0...
  • Page 20 Displays Err 9.4 Factory internal calibration data failed checksum. Perform MFG and MFGWT. If the problem persists reload the TC data. If the problem still persists the main PCB must be reconfigured at Ohaus. Displays Err 9.5 Factory calibration data failed checksum. Perform MFG and MFGWT. If the problem persists reload the TC data. If the problem still persists the main PCB must be reconfigured at Ohaus.

  • Page 21: Chapter 3 Repair Procedures

    CHAPTER 3 REPAIR PROCEDURES REPAIR PROCEDURES Depending upon the capacity of the balance, one of three different types of load cells are used. The analytical balances contain an analytical load cell or a Monoblock load cell and the top loader balances contain one of two styles of Monoblock load cells.

  • Page 22: Analytical Load Cell Replacement

    CHAPTER 3 REPAIR PROCEDURES 3.1.2 Analytical Load Cell (9) Replacement After the Load Cell Assembly has been repaired, it is installed as follows: 1.Carefully align the Analytical Load Cell (9) in the Base (18) (Figure 5-3) so that there is equal space on both sides of the Analytical load Cell to the base sides.
  • Page 23 CHAPTER 3 REPAIR PROCEDURES 3.1.3 Analytical Load Cell Position Sensor Adjustment With Test Points When the Analytical Load Cell Assembly (9) has been repaired either an Upper or lower Flexure Arm Assembly or Vertical Flexure has been replaced, it may be necessary to adjust the Position Sensor. Refer to Figures 3-1, 5-3 and 5-4. 1.Remove the Analytical Load Cell from the balance, see paragraph 3.1.1.

  • Page 24: Analytical Load Cell Position Sensor Adjustment

    CHAPTER 3 REPAIR PROCEDURES 3.1.4 Analytical Load Cell Position Sensor Adjustment Without Test Points When the Analytical Load Cell Assembly (9) has been repaired either an Upper or lower Flexure Arm Assembly or ADJUSTMENT SCREWS Vertical Flexure has been replaced, it may be necessary to adjust the Position Sensor.

  • Page 25: Analytical Load Cell Upper Flexure Arm And Lower Flexure Arm Removal/Installation

    CHAPTER 3 REPAIR PROCEDURES 3.1.7 Analytical Load Cell Upper Flexure Arm and Lower Flexure Arm Removal/Installation Refer to Figures 3-5, 3-6 and 5-4 for the following procedure. CAUTION Before the Upper or Lower Flexure Arms can be removed, the the Load Flexure must be removed and the Hanger secured to the base of the Transducer with two screws removed from the Bottom Mounting Plate...

  • Page 26: Removing The Lever And Coil

    CHAPTER 3 REPAIR PROCEDURES 3.1.8 Removing the Lever and Coil. 1.Remove the Hanger and shims. 2.Remove the Vane (e) from the Lever. 3.Remove the 4 screws (f) holding the magnet holder. 4.Remove the magnet holder. CAUTION: The magnet is made of brittle material, care should be taken not to break off pieces.

  • Page 27: Replacing The Lever And Coil

    2.Place the lever in the chassis and lock by turning the up/down stop to the original position. 3.Install the Ohaus fixture included in part number 476001-020. This will give all the proper distances. 4.Install the lateral stop. Make sure the post is centered in the hole.

  • Page 28: Monoblock Load Cell Replacement For Precision Top Loader And Analytical Balances

    CHAPTER 3 REPAIR PROCEDURES 3.1.11 Monoblock Load Cell Removal Precision Top Loader Balance and Analytical (Cont.) 10. Remove the two Screws (3) on top of the PC Board (11). 11. Remove the Hex Screws (14) and Washers (25) at the rear of the balance which secure the connectors on the PC Board (11).

  • Page 29: Position Sensor Assembly Removal From Monoblock In Precision Top Loader Balance

    CHAPTER 3 REPAIR PROCEDURES 3.1.13 Position Sensor Assembly Removal from Monoblock in Precision Top Loader Balance 1.Remove four screws which secure the overload protection to the Monoblock and remove the overload protection. 2.Unscrew the three fastener screws of the Position Sensor Assembly. 3.Raise the Position Sensor Assembly, which is held by the magnetic field.

  • Page 30: Installing The Position Sensor Assembly For Monoblock Precision Top Loader Balance

    CHAPTER 3 REPAIR PROCEDURES 3.1.14 Installing the Position Sensor Assembly for Monoblock Precision Top Loader Balance 1.Mount Position Sensor Assembly, align centrally on the lateral stop pin (1), (Figure 3-11) of the lever and fasten with the three screws. Please note: The flange of the Position Sensor Assembly is prebent to ensure its precise positioning after screwing on.
  • Page 31 CHAPTER 3 REPAIR PROCEDURES 3.1.16 Removing the Force Coil Lever Assembly from Monoblock in Precision Top Loader 1.Remove four screws which secure the overload protection to the Monoblock. See Figure 5-5. FORMED CHASSIS 2.Unscrew fastener screws at formed chassis and remove Monoblock with lever from formed chas- sis.

  • Page 32: Installing The Force Coil Lever Assembly In Monoblock For Precision

    CHAPTER 3 REPAIR PROCEDURES 3.1.17 Installing the Force Coil Lever Assembly in Monoblock for Precision Top Loader Balance 1.Place Force Coil Lever assembly in the des- ignated position; check whether the alumi- num sleeves are correctly positioned. See Figure 3-16. 2.Turn back vertical adjustment screw (3) to the original position.

  • Page 33: Vertical Stop Adjustment For Monoblock In Precision Top Loader Balance

    CHAPTER 3 REPAIR PROCEDURES 3.1.18 Vertical Stop Adjustment for Monoblock in Precision Top Loader Balance Note Note Note Note Note: If the Position Sensor Assembly is changed, it may be necessary to readjust the vertical stop. Adjusting Vertical Stop 1.Attach voltmeter to 2 pin connector located at the top left corner of the Load Cell Board.

  • Page 34: Calibration Motor Removal From High Capacity Top Loader Balance

    CHAPTER 3 REPAIR PROCEDURES 3.1.19 Monoblock Load Cell Removal from High Capacity Top Loader Balance Refer to Figure 5-6 in Chapter 5 for location of components called out in this procedure and Figure 3-19. To remove the Monoblock Load Cell, proceed as follows: 1.With the balance turned OFF and unplugged, remove the Pan (1).

  • Page 35: Position Sensor Assembly Removal From Monoblock In High Capacity Top Loader Balance

    CHAPTER 3 REPAIR PROCEDURES 3.1.20 Calibration Motor Removal from High Capacity Top Loader Balance (Cont.) 5.Unscrew two fastener screws (3) of the Calibration Bracket (4) and carefully remove Bracket. 6.Unscrew two fasteners screws (6) of the Calibration Motor and remove the Motor. 3.1.21 Position Sensor Assembly Removal from Monoblock in High Capacity Top Loader Balance 1.Unscrew the three fastener screws ( a ) of the...

  • Page 36: Installing The Force Coil Lever Assembly In Monoblock In High Capacity Top Loader Balance

    CHAPTER 3 REPAIR PROCEDURES 3.1.24 Installing the Force Coil Lever Assembly in Monoblock for High Capacity Top Loader Balance 1.Place Lever in designated position: check that the aluminum sleeves are properly positioned. 2.Turn back height adjustment screw to original position. 3.Insert Centering Pins in holes provided.

  • Page 37: Changing Servomotor On High Capacity Top Loader Balance

    CHAPTER 3 REPAIR PROCEDURES 3.1.26 Changing Servomotor on High Capacity Top Loader Balance NOTE: The replacement motor is supplied without eccen- tric and without motor holder, the corresponding parts of the old motor should be used. 1.Refer to paragraph 3.1.20 and remove Servomo- tor.

  • Page 38: Vertical Stop Adjustment For Monoblock In High Capacity Top Loader Balance

    CHAPTER 3 REPAIR PROCEDURES 3.1.27 Vertical Stop Adjustment for Monoblock in High Capacity Top Loader Balance Note Note Note Note Note: The Position Sensor can be aligned by eye with the mounting holes. - If the Sensor Board has been replaced, it may be necessary to adjust the vertical stop.
  • Page 39 CHAPTER 3 REPAIR PROCEDURES 3-19...

  • Page 40: Analytical Balances Main Printed Circuit Board (Pcb)

    CHAPTER 3 REPAIR PROCEDURES 3.2.1 Analytical Balances Main Printed Circuit Board (PCB) (Cont.) CAUTION WHEN HANDLING THE P.C. BOARD, HANDLE BY EDGES ONLY! DO NOT TOUCH FOIL SIDE OF BOARD. STATIC DISCHARGE MAY DAMAGE SOME COMPONENTS. 11. Switch the following components from the defective Main PC Board to the replacement: EEPROM U10 - IC U11 - PSD...

  • Page 41: Analytical Balance Position Sensor Pc Board

    CHAPTER 3 REPAIR PROCEDURES 3.2.2 Analytical Balance - Position Sensor PC Board When the Position Sensor PC Board (51C) (See Figure 5-4) has been determined that it is defective and requires replacement, proceed as follows: 1.Remove power from the balance. 2.Proceed to paragraph 3.1.1 Load Cell Removal and remove the Load Cell (51)from the balance.
  • Page 42 CHAPTER 3 REPAIR PROCEDURES 3.2.3 Precision Top Loader Balances Main Printed Circuit Board (PCB) (Cont.) See Figure 5-3 for remaining steps. 6.Remove the two Hex Screws (1) from the Subplatform (2). 7.Remove the Subplatform (2). 8.Remove two Screws (3) which secure Shield (4) in place. 9.Remove Shield (4) from the balance.

  • Page 43: High Capacity Top Loader Balance Main Printed Circuit Board (Pcb) And Power Supply (Pcb)

    CHAPTER 3 REPAIR PROCEDURES 3.2.4 High Capacity Top Loader Balances Main Printed Circuit Board (PCB) and Power Supply ( PCB) Refer to Figure 5-6 in Chapter 5 for location of components called out in this procedure. There are two printed circuit boards; one is the Main PCB and the other is a Power Supply PCB.

  • Page 44: High Capacity Top Loader Balance Connector Printed Circuit Board (Pcb)

    10. Position the Connector Plate (13) over the holes on the side of the balance and install the two screws (12). 11. Turn the balance in it's proper operating position and install the pan (1). 12. Apply power to the balance. 3.2.6 Removing the Display Module on Explorer Precision Top Loader Balances (See Figure 3-26) 1.Remove power from the balance.

  • Page 45: Removing The Display Module On Explorer High Capacity Top Loader Balances

    CHAPTER 3 REPAIR PROCEDURES 3.2.6 Removing the Display Module on Explorer Precision Top Loader Balances (Cont.) Figure 3-26. Display Removal/Installation for Explorer Precision Top Loader Balance. 3.2.7 Removing the Display Module on Explorer High Capacity Top Loader Balances (See Figure 3-20) 1.Remove power from the balance.

  • Page 46: Display Printed Circuit Board

    CHAPTER 3 REPAIR PROCEDURES 3.2.7 Removing the Display Module on Explorer High Capacity Top Loader Balances (Cont.) Figure 3-27. Display Removal/Installation for Explorer High Capacity Top Loader Balance. 3.2.8 Display Printed Circuit Board 1.Remove the Display Module as per paragraph 3.2.6 or 3.2.7 depending upon type of balance.

  • Page 47: Membrane Switch Replacement

    CHAPTER 3 REPAIR PROCEDURES 3.2.8 Display Printed Circuit Board (Cont.) 8.Secure the grounding strap using the hardware previously removed. 9.Carefully position the display flush with the top of the balance and press into position. The tabs underneath the balance should lock into place. 10.

  • Page 48: Replacing The Display

    CHAPTER 3 REPAIR PROCEDURES 3.2.9 Membrane Switch Replacement (Cont.) 7.Insert the flat cable from the membrane switch and ground cable through the holes on the display panel. See Figure 3-29. CAUTION BE CAREFUL NOT TO BEND THE RIBBON CABLE SHARPLY. IF IT IS CREASED, USE ANOTHER MEMBRANE SWITCH.

  • Page 49: Removing The Display Module Voyager And Explorer Pro Models

    CHAPTER 3 REPAIR PROCEDURES 3.2.11 Removing the Display Module Voyager and Explorer Pro Models (See Figure 3-23) 1.Remove power from the balance. 2.Underneath the front of the balance, press the two tabs (1) towards the rear of the balance, this will release the display.

  • Page 50: Display Pcb/Lcd Assembly Replacement

    CHAPTER 3 REPAIR PROCEDURES 3.2.12 Display PCB/LCD Assembly Replacement This procedure describes the replacement of either the PCB Assembly or LCD Assembly. 1.Remove the Display module as per paragraph 3.2.11. 2.Turn Display Module over exposing Display PCB Assembly. See Figures 3-31 and 5-9. 3.Carefully unplug the Membrane Panel Switch Ribbon Cable from the Display PCB Assembly Connector.

  • Page 51: Bulb Replacement

    CHAPTER 3 REPAIR PROCEDURES 3.2.13 Bulb Replacement This procedure describes the replacement of the Bulb on the LCD Display Assembly. See Figure 3-32. NOTE: This procedure requires that all hardware items that are removed be saved as they are not available as spare parts.
  • Page 52 CHAPTER 3 REPAIR PROCEDURES LCD ASSEMBLY PLASTIC PUSH IN FASTENER BRACKET DIFFUSER PANEL BULB BULB WIRE END CAP Figure 3-32. LCD Assembly Bulb Replacement. 3-32...

  • Page 53: Chapter 4 Testing

    4.1 TESTING Before servicing the Explorer balance, an operational test and various performance tests should be made to ascertain whether or not the balance meets specifications. Turn the balance on and allow it warm up for at least one hour before performing these tests.

  • Page 54: Performance Tests All Balances

    4.2 PERFORMANCE TESTS ALL BALANCES Accurate performance of the Explorer balance is determined by a series of four performance tests. The displayed readings are compared with the tolerances listed in Table 4-1. Tolerance values are expressed in counts. A one count change is equal to the last digit shown on the balance display.
  • Page 55 CHAPTER 4 TESTING 4.2.2 Off-Center Load Test (Cont.) Adjustment for Analytical Balances (Cont.) See Figure 5-3 for remaining steps. 5.Remove two Screws (3) which secure Shield (4) in place. 6.Remove Shield (4) from the balance. 7.Remove the two Screws (3) on top of the PC Board (11). 8.Remove the Hex Screws (14) and Washers (25) at the rear of the balance which secure the connectors on the PC Board (11).
  • Page 56 CHAPTER 4 TESTING 4.2.2 Off-Center Load Test (Cont.) Adjustment for Analytical Balances (Cont.) 15. Repeat the Off-Center Load Test. 16. Turn the balance OFF and unplug power cord. 17. Remove the Pan (5). 18. Remove cable extenders, connect the two cable connectors from the Analytical Load Cell (9) to the Main PC Board edge connectors J3, J6 and the Sensor Cable.
  • Page 57 CHAPTER 4 TESTING 4.2.2 Off-Center Load Test (Cont.) Adjustment for Monoblock used in Precision Top Loader Balances (210g to 8100g) This adjustment requires that the balance be partially disassembled to gain access to the Load Cell for adjustments. Refer to Figures 5-1 and 5-3 in Chapter 5 for location of components called out in this procedure. See Figure 5-1 for steps 1 through 5.
  • Page 58 CHAPTER 4 TESTING 4.2.2 Off-Center Load Test (Cont.) Adjusting the Cornerload on Precision Top Loader Balances The Monobloc measuring cell is not adjusted by means of the cornerload screws, but by removing material from its top. This is achieved by a few strokes with a nibler file exerting slight pressure as you pull the file towards you.
  • Page 59 CHAPTER 4 TESTING 4.2.2 Off-Center Load Test (Cont.) Adjustment for Monoblock used in High Capacity Top Loader Balances (12000g to 32000g) This adjustment requires that the balance be partially disassembled to gain access to the Load Cell for adjustments. Refer to Figure 5-6 in Chapter 5 for location of components called out in this procedure.

  • Page 60: Linearity Test

    CHAPTER 4 TESTING 4.2.3 Linearity Test The Linearity test is used to determine the span and linearity of the balance throughout its operating range and is in accordance with the specifications listed in Tables 1-2, 1-3 and 1-4. The masses used to perform this test must meet or exceed ASTM Class 1 Tolerance.

  • Page 61: Rs232 Communication Test

    CHAPTER 4 TESTING 4.2.4 RS232 Communication Test The RS232 Interface in the Explorer balance can have its performance monitored using an external printer or computer connected to the balance. The RS232 Interface is a bi-directional interface which enables the balance to communicate with a printer or computer equipped with an RS232 serial port.
  • Page 62 CHAPTER 4 TESTING 4-10...

  • Page 63: Chapter 5 Drawings And Parts Lists

    5.1 DRAWINGS AND PARTS LISTS This section of the manual contains exploded views for the Explorer Balances with associated parts lists.. The exploded view drawings are designed to identify the parts which can be serviced on the balance in the field. To facilitate this, the...
  • Page 64 CHAPTER 5 DRAWINGS AND PARTS LISTS See Figure 5-2 NOTE: Boxed items are not available for sale. Figure 5-1. Overall Exploded View of Precision Top Loader Balance.

  • Page 65: Parts Lists

    CHAPTER 5 DRAWINGS AND PARTS LISTS 5.2 PARTS LISTS This section of the manual contains the replaceable parts for all models of the the Explorer / Voyager / Explorer Pro balances. 5.2.1 Precision Top Loader Base Parts List TABLE 5-1. PRECISION TOP LOADER BASE PARTS LIST (See Figure 5-1) KEY NO.
  • Page 66 CHAPTER 5 DRAWINGS AND PARTS LISTS NOTE: Boxed items are not available for sale. Figure 5-2. Overall Exploded View of Analytical Balance.

  • Page 67: Analytical Base Parts List

    Clamp, Explorer, Voyager, Explorer Pro 11108703 Left Door Assembly, Explorer, Voyager 11108705 Window, Front, Explorer, Voyager 11136765 Draft Shield Column Assembly, Right, Explorer, Voyager, Explorer Pro 11136764 Draft Shield Column Assembly, Left, Explorer, Voyager, Explorer Pro 11136701 Top Door Assembly, Explorer Pro 11136703...
  • Page 68 CHAPTER 5 DRAWINGS AND PARTS LISTS TO J2 TO J6 SWITCH CABLE TO DISPLAY MODULE POSITION TO J6 TO J2 TO J4 TO J6 TO J3 NOTE: Boxed items are not available for sale. Figure 5-3. Exploded View of Precision Top Loader Base Assembly.

  • Page 69: Precision Top Loader Base Parts List

    TABLE 5-3. PRECISION TOP LOADER BASE PARTS LIST (See Figure 5-3) KEY NO. PART NO. DESCRIPTION 11108720 Pan Support, 6.8" x 6.8" & 8" x 8", Explorer, Voyager, Explorer Pro 11108412 Cable, Display, Explorer, Voyager, Explorer Pro 11108708 Calibration Mechanism, Explorer, Voyager, Explorer Pro...
  • Page 70 CHAPTER 5 DRAWINGS AND PARTS LISTS Lever (Ratio Beam) Gold Wires NOTE: Boxed items are not available for sale. Figure 5-4. Exploded View of Analytical Load Cell.

  • Page 71: Analytical Load Cell Parts List

    1. In all cases where a part is replaced, the balance shall be thoroughly checked after the replacement is made. The balance must meet the parameters of all applicable specifications in this manual. 2. Ohaus replacement parts warranty only applies to parts purchased from Ohaus Corporation.
  • Page 72 CHAPTER 5 DRAWINGS AND PARTS LISTS Figure 5-5. Exploded View of Monoblock Load Cell for Precision Top Loader. 5-10...

  • Page 73: Precision Top Loader Monoblock Load Cell Parts List

    PART NO. DESCRIPTION 00217401 Position Sensor Assembly Monoblock, Explorer, Voyager, Explorer Pro, Hi Capacity 00217400 Force Coil Lever Assembly Monoblock, Explorer, Voyager, Explorer Pro, Hi Capacity 00225615 Board, Load Cell, Monoblock, Explorer, Voyager, Explorer Pro, Hi Capacity 81951 Reference Resistor, 1.5k, Explorer, Voyager, Explorer Pro...
  • Page 74 CHAPTER 5 DRAWINGS AND PARTS LISTS NOTE: Boxed items are not available for sale. Figure 5-6. Exploded View of High Capacity Top Loader Balance (Sheet 1 of 2). 5-12...

  • Page 75: High Capacity Top Loader Balance Parts List

    1. In all cases where a part is replaced, the balance shall be thoroughly checked after the replacement is made. The balance must meet the parameters of all applicable specifications in this manual. 2. Ohaus replacement parts warranty only applies to parts purchased from Ohaus Corporation. 5-13...
  • Page 76 CHAPTER 5 DRAWINGS AND PARTS LISTS NOTE: Boxed items are not available for sale. Figure 5-6. Exploded View of High Capacity Top Loader Balance (Sheet 2 of 2). 5-14...
  • Page 77 1. In all cases where a part is replaced, the balance shall be thoroughly checked after the replacement is made. The balance must meet the parameters of all applicable specifications in this manual. 2. Ohaus replacement parts warranty only applies to parts purchased from Ohaus Corporation. 5-15...
  • Page 78 CHAPTER 5 DRAWINGS AND PARTS LISTS NOTE: Boxed items are not available for sale. Figure 5-7. Exploded View of Monoblock Load Cell for High Capacity Top Loader Balance 5-16...

  • Page 79: Monoblock High Capacity Top Loader Balance Parts List

    1. In all cases where a part is replaced, the balance shall be thoroughly checked after the replacement is made. The balance must meet the parameters of all applicable specifications in this manual. 2. Ohaus replacement parts warranty only applies to parts purchased from Ohaus Corporation. 5-17...
  • Page 80 CHAPTER 5 DRAWINGS AND PARTS LISTS Figure 5-8. Exploded View of Explorer Display. 5-18...

  • Page 81: Explorer Display Parts List

    CHAPTER 5 DRAWINGS AND PARTS LISTS 5.2.9 Explorer Display Parts List TABLE 5-8. EXPLORER DISPLAY PARTS LIST (See Figure 5-8) KEY NO. PART NO. DESCRIPTION 11108414 Switch, Membrane, Explorer 11136112 Cover, Display, Coated, Explorer, Voyager, Explorer Pro, High Capacity 11108413...
  • Page 82 CHAPTER 5 DRAWINGS AND PARTS LISTS Figure 5-9. Exploded View of Explorer High Capacity Display. 5-20...
  • Page 83 CHAPTER 5 DRAWINGS AND PARTS LISTS 5.2.10 Explorer High Capacity Display Parts List TABLE 5-9. EXPLORER HIGH CAPACITY DISPLAY PARTS LIST (See Figure 5-9) KEY NO. PART NO. DESCRIPTION 11108481 Membrane Switch, Explorer, High Capacity 11136112 Cover, Display, Coated, Explorer, Voyager, High Capacity...
  • Page 84 CHAPTER 5 DRAWINGS AND PARTS LISTS Figure 5-10. Exploded View of Explorer Pro, Voyager Display. 5-22...

  • Page 85: Explorer Pro, Voyager Display Parts List

    11108417 Bulb, Replacement, Explorer Pro, Voyager 80850042 In use cover, Explorer, Explorer Pro, Voyager (Not shown) 11108407 LCD Display PCB (Bottom), Explorer pro, Voyager, Voyager Pro, no PSD or software 11136713 LCD Display PCB (Bottom), Explorer Pro w/PSD 11136714 LCD Display PCB (Bottom), Voyager Pro w/PSD NOTES: 1.
  • Page 86 CHAPTER 5 DRAWINGS AND PARTS LISTS Figure 5-11. Exploded View of Voyager, Explorer Pro High Capacity Display. 5-24...
  • Page 87 CHAPTER 5 DRAWINGS AND PARTS LISTS 5.2.12 Voyager, Explorer Pro, High Capacity, Display Parts List TABLE 5-11. VOYAGER, EXPLORER PRO, HIGH CAPACITY DISPLAY PARTS LIST (See Figure 5-11) KEY NO. PART NO. DESCRIPTION 11136480 Membrane Switch, Explorer Pro, High Capacity...
  • Page 88 CHAPTER 5 DRAWINGS AND PARTS LISTS 5-26...

  • Page 89: Appendix A - Explorer Ep Loader

    • If the balance is a Voyager an Explorer display module will be needed. A.2 Limitations • The EP Loader software can not be used to restore the personality data in an Explorer that has the internal calibration option. A.3 Installing EP Loader Software 1.

  • Page 90: Run Ep Loader Software

    APPENDIX A - EXPLORER EP LOADER A.4 Run EP Loader Software 1. Click on EP Loader icon located in Start>Programs>EP Loader 2. The following screen will be displayed:...

  • Page 91: Setup The Balance In Manufacturing Mode

    0.01g and 0.1g resolution balances. a. If the balance is a Voyager install an Explorer display module. b. Ensure that the display PCB cannot short to the balance casing.

  • Page 92: Personality Data Label Entry

    APPENDIX A - EXPLORER EP LOADER A.7 Personality Data Label Entry 1. Locate the Personality Data Label on the balance. Refer to Figure A-1. a. The data will be located on the RF shield. CAUTION This software cannot be used to download personality data for models having internal calibration (AutoCal).
  • Page 93 APPENDIX A - EXPLORER EP LOADER A.7 Personality Data Label Entry (Cont.) 3. Confirm that the Balance Personality Data from the label matches the data that was inputted into the Personality Data section of the EP Loader. If not edit the data. If only the personality data is to be loaded uncheck the TC Data box in the Data Type box see below.

  • Page 94: Temperature Compensation (Tc) Data Entry

    APPENDIX A - EXPLORER EP LOADER A.8 Temperature Compensation (TC) Data Entry 1. Locate the TC Data Label on the balance. For the location see Figure A-1. a. There are 2 major styles of label currently in use, please refer to Figure A-3.
  • Page 95 When the first entry of the AutoCal TC data “H” is entered the main screen will change. See below. The added grid is for loading the AutoCal Data in Explorer Pro balances. It is not used for Explorer balances.

  • Page 96: Downloading Personality Data And/Or Tc Data Into The Balance

    APPENDIX A - EXPLORER EP LOADER A.9 Downloading Personality Data and/or TC Data into the Balance 1. In the Data Type box of the EP Loader , there are two check fields to allow selections of Personality Data and/or TC Data to be downloaded into the balance. If both types of data need to be downloaded it can be done at one time.

  • Page 97: Appendix B - Explorer Pro Ep Loader

    • Minimum 24 MB RAM for Windows 95/98, 32 MB for Windows NT • Minimum 10 MB free space • CD-ROM • RS232 cable, Ohaus part number AS017-09 (9 pin) or AS017-02 (25 pin) • HyperTerminal or another communications program to verify the data. • Explorer display B.2 Installing EP Loader Software...

  • Page 98: Run Ep Loader Software

    APPENDIX B - EXPLORER PRO EP LOADER B.3 Run EP Loader Software 1. Click on EP Loader icon located in Start>Programs>EP Loader 2. The following screen will be displayed:...

  • Page 99: Setup The Balance In Manufacturing Mode

    0.01g and 0.1g resolution balances. a. Remove the Explorer Pro display module and install an Explorer display. b. Ensure that the display PCB cannot short to the balance casing.

  • Page 100: Connect The Balance To A Pc

    APPENDIX B - EXPLORER PRO EP LOADER B.5 Connect the Balance to a PC 1. Connect the RS232 interface cable between the balance and the PC. a. Note that for a 9-pin to 9-pin cable; ensure the connector marked BAL is connected to the balance.
  • Page 101 APPENDIX B - EXPLORER PRO EP LOADER B.6 Temperature Compensation (TC) Data Entry (Cont.) a. When the first entry of the AutoCal TC data “H” is entered the main screen will change. See next page. The added grid is for loading the AutoCal data.
  • Page 102 APPENDIX B - EXPLORER PRO EP LOADER B.6 Temperature Compensation (TC) Data Entry (Cont.) 1. Confirm that the TC Data from the label was correctly inputted into the TC Data of the EP Loader...

  • Page 103: Personality Data Label Entry

    APPENDIX B - EXPLORER PRO EP LOADER B.7 Personality Data Label Entry 1. Locate the Personality Data label and the AutoCal Data label on the balance. They will be located on the base under the display module There will be one for standard units and two for units with internal calibration.
  • Page 104 APPENDIX B - EXPLORER PRO EP LOADER B.7 Personality Data Label Entry (Cont.) 4. Confirm that the Balance Personality Data from the label matches the data that was inputted into the Personality Data section of the EP Loader. If not, edit the data.

  • Page 105: Downloading Personality Data And/Or Tc Data Into The Balance

    APPENDIX B - EXPLORER PRO EP LOADER B.8 Downloading Personality Data and/or TC Data Into the Balance 1. In the Data Type box of the EP Loader , there are two check fields to allow selections of Personality Data and/or TC Data to be downloaded into the balance. If both types of data need to be downloaded it can be done at one time.
  • Page 106 APPENDIX B - EXPLORER PRO EP LOADER B-10...
  • Page 107 0.01g and 0.1g resolution balances. If the balance is a Voyager or Explorer Pro install an Explorer display module. Ensure that the display PCB cannot short to the balance casing.
  • Page 108 APPENDIX C - PRODUCTION MODE CALIBRATION C.3 Manufacturing Weight Calibration (MFgWt) Procedure This calibration is required if the balance has internal calibration. This procedure restores the internal weight calibration factor that is erased by the MFg calibration. 1. Press and release Setup. The balance will display MFGTEST. 2.
  • Page 109 APPENDIX D - REPLACING BOTTOM DISPLAY BOARD This procedure is used when replacing the bottom display board on the Voager, explorer Pro and Voyager pro balances. D.1 Replacing the Bottom Display Board on Voyager, Explorer Pro and Voyager Pro Balances The bottom board of the display can be replaced using the following steps.
  • Page 110 APPENDIX D - REPLACING BOTTOM DISPLAY BOARD D.2 Explorer Pro, Voyager and Voyager Pro Display Flash Instructions (Cont.) 3. Install the flash loader program by running the Setup.exe file and following the prompts of the install shield wizard. 4. Unzip the required bank files into their own individual folder. This folder will contain bank files with the extension .H00, .H01 …...
  • Page 111 APPENDIX D - REPLACING BOTTOM DISPLAY BOARD D.2 Explorer Pro, Voyager and Voyager Pro Display Flash Instructions (Cont.) 10. Select the balance you are downloading to then click on browse and select the location of the bank files to be installed.
  • Page 112 APPENDIX D - REPLACING BOTTOM DISPLAY BOARD...
  • Page 114 *80250985* PN 80250985 SERVICE MANUAL - EXPLORER, EXPLORER PRO AND VOYAGER BALANCES...

This manual is also suitable for:

Explorer proVoyager

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