OHAUS Defender 3000 Series Service Manual
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OHAUS Defender 3000 Series Service Manual

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Defender
3000 Indicators
Service Manual
i-DT33P
i-DT33XW

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Summary of Contents for OHAUS Defender 3000 Series

  • Page 1  Defender 3000 Indicators Service Manual i-DT33P i-DT33XW...

  • Page 3: Table Of Contents

    Defender 3000 Indicators Service Manual EN-1 TABLE OF CONTENTS INTRODUCTION ............................3 1.1 Definition of Signal Warning and Symbols ....................3 1.1.1 Safety Precautions ..........................3 1.1.2 Intended Use ............................4 1.2 Service Facilities ............................4 1.3 TOOLS AND TEST EQUIPMENT REQUIRED ..................4 1.3.1 Special Tools and Test Equipment List ....................
  • Page 4 5.3 Loadcell Cable Replacement ........................38 5.4 Function Label Replacement ........................39 PARTS IDENTIFICATION ......................... 40 6.1 Defender 3000 Series Indicator: i-DT33P ....................40 6.2 Defender 3000 Series Indicator: i-DT33XW .................... 42 APPENDIX A. CONFIGURING THE MAIN PCBA ..................44...

  • Page 5: Introduction

    This service manual contains the information needed to perform routine maintenance and service on the Defender 3000 Series Scales. There will be two parts for the service manual where first part will describe the service on the Indicator as this manual and second part would describe the service for the bases, please refer to Defender Series Base Service Manual.

  • Page 6: Intended Use

    Any other type of use and operation beyond the limits of technical specifications, without written consent from OHAUS, is considered as not intended. This instrument complies with current industry standards and the recognized safety regulations; however, it can constitute a hazard in use.

  • Page 7: Special Tools And Test Equipment List

    Defender 3000 Indicators Service Manual EN-5 1.3.1 Special Tools and Test Equipment List Ohaus Scale Base. Load Cell Simulator optional. Computer with RS232/USB Interface for testing the RS232/USB communications. RS232 Interface cable for i-DT33XW Data Printer for use with RS232/USB communications.

  • Page 8: Overview Of Parts

    EN-6 Defender 3000 Indicators Service Manual 1.4 Overview of Parts 1.4.1 Parts of i-DT33P 1.4.2 Parts of i-DT33XW Note:  There are two types of load cell connector, one supports EasyConnect and one does not. Therefore the load cell connector varies for different models. ...

  • Page 9: Main Pcb

    Defender 3000 Indicators Service Manual EN-7 1.4.3 Main PCB...

  • Page 10: Control Functions

    EN-8 Defender 3000 Indicators Service Manual 1.5 Control Functions i-DT33P Control Panel i-DT33XW Control Panel...
  • Page 11 Defender 3000 Indicators Service Manual EN-9...

  • Page 12: External Connections

    Use 6 C size dry batteries (not included). In some regions, the i-DT33P model comes with one lead-acid battery installed by factory. Note: You can contact an authorized OHAUS dealer to buy the lead-acid battery as an option. i-DT33XW This model comes with one lead-acid battery installed by factory default.

  • Page 13: Internal Connections

    Note: For connecting bases which do not support EasyConnect to an EasyConnect indicator, contact an authorized OHAUS dealer to obtain a load cell cable gland kit (P/N 30379716) as an accessory. 1.7.2 Load cell connection Non-EasyConnect Indicator To connect a non-EasyConnect...
  • Page 14 EN-12 Defender 3000 Indicators Service Manual i-DT33P After opening the housing, release the load cell connector (circled) on the rear of the indicator and then pass the load cell cable through it. Connect all the cables on the load cell cable to the load cell terminal block on the mainboard (circled). Please refer to the Load Cell Terminal Block section.
  • Page 15 Defender 3000 Indicators Service Manual EN-13 i-DT33XW After opening the housing, unplug the battery connectors (circled) and take out the battery. Unscrew the two screws on the sealing cover (circled), take out the cover, and then take out the first layer of the built-in housing...
  • Page 16 EN-14 Defender 3000 Indicators Service Manual Release the load cell connector (circled) on the bottom of the indicator and then pass the load cell cable through it. Connect all the cables on the load cell cable to the load cell terminal block on the mainboard (circled). Please refer to the Load Cell Terminal Block section for details of the connections.
  • Page 17 Defender 3000 Indicators Service Manual EN-15 Load Cell Terminal Block Proceed with the previous section, to connect the load cell terminal block, first locate it on the mainboard following the instruction in the previous two sections for the two models. After finding the load cell terminal block, check table 2-1 for the definition of each terminal screw connection and make connections based on it.

  • Page 18: Rs232 Connection I-Dt33P

    EN-16 Defender 3000 Indicators Service Manual 1.7.3 RS232 Connection i-DT33P Connect the optional RS232 cable to the RS232 connector on the rear housing of the i-DT33P indicator. Please refer to table 2-2 for the definition of each pin if needed. Table RS232 Pins Connection RS232 Connector...

  • Page 19: Mounting Bracket

    Defender 3000 Indicators Service Manual EN-17 1.8 Mounting Bracket Attach the bracket to a wall or table using fasteners (not supplied) that are appropriate for the type of mounting surface. The bracket will accommodate up to 6 mm (1/4”) diameter screws. Locate the mounting holes as shown below.

  • Page 20: Menu Settings

    EN-18 Defender 3000 Indicators Service Manual 2 MENU SETTINGS The User Menu allows the customizing of scale settings. Note: Sub-menu for options (USB, Ethernet and Print2 in the table below) will be active only when the specific board is installed. See their separate option instruction manuals for additional setting information. 2.1 Menu Navigation C.A.L S.E.t.U.P...

  • Page 21: Button Navigation

    Defender 3000 Indicators Service Manual EN-19 2.2 Button Navigation The Yes button： allows entry into the displayed menu. Accepts the displayed setting and advances to the next item. The No button： rejects entry into the displayed menu. Rejects the displayed menu and move on to the next selection. The Back button: moves backwards through the upper and middle level menus.

  • Page 22: Calibration Menu

    EN-20 Defender 3000 Indicators Service Manual 2.3 Calibration Menu C.A.L Enter the calibration menu to perform calibrations. 2.3.1 Initial Calibration When the scale is operated for the first time, a zero and span calibration are recommended to ensure accurate weighing results. Before performing the calibration, be sure to have the appropriate calibration weights as listed in table below.

  • Page 23: Span Calibration [Span]

    Defender 3000 Indicators Service Manual EN-21 [SpaN] 2.3.3 Span Calibration Span calibration uses one point. The span calibration point is established with a calibration mass placed on the scale. Note: Span calibration should be performed after zero calibration. Calibration procedures: mM.E.N.U Long press the Menu button until you see C.A.L...

  • Page 24: Geo Adjustment [Geo]

    EN-22 Defender 3000 Indicators Service Manual The second calibration point and the unit are flashing on the display based on the capacity and unit you 030.000 set in the setup menu. (For example, Note: CAL E If after waiting for 40s the calibration is still not successful, is displayed for 3 seconds and the previous calibration data is restored.

  • Page 25: End Cal [End]

    Defender 3000 Indicators Service Manual EN-23 Diff Cal:0.0000kg Wt. ID:_____________ ------------ End ----------- After 5 seconds, the test ends and the scale returns to the active weighing mode, displaying the current weight. 2.3.7 End Cal When is displayed, press the Yes button to exit this menu and advance to the next Sub-menu or press the No button to advance to the first menu item in the this Sub-menu.

  • Page 26: Maintenance

    Attention: Do not use solvents, harsh chemicals, ammonia or abrasive cleaning agents. 3.1 Preventive Maintenance Ohaus bases should be carefully handled, stored in a clean, dry area, and cleaned periodically. Follow these precautionary steps: – When a base 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.

  • Page 27: Troubleshooting

    Defender 3000 Indicators Service Manual EN-25 3.3 Troubleshooting TABLE 3-1 TROUBLESHOOTING SYMPTOM PROBABLE CAUSE (s) REMEDY EEP Error EEPROM Checksum Error Corrupted EEPROM data Unable to turn on the Power cord not plugged in or Check power cord connections. properly connected. Make sure power cord is plugged in indicator.

  • Page 28: Verification Of The Safe State Of The Equipment After Service

    Service assistance in the United States, call toll-free 1-800-526-0659 between 8:00 AM and 5:00 PM Eastern Standard Time. An Ohaus Product Service Specialist will be available to assist you. Outside the USA, please visit our website www.ohaus.com to locate the Ohaus office nearest you.

  • Page 29: Technical Data

    Defender 3000 Indicators Service Manual EN-27 TECHNICAL DATA 4.1 Specifications Equipment Ratings: Indoor use only Altitude: 2,000m Operating temperature: -10° C to 40° C Maximum relative humidity 80% for temperatures up to 31 ° C decreasing Humidity: linearly to 50% relative humidity at 40° C. Electrical supply: 100 - 240V～, 0.5A, 50/60Hz Voltage fluctuations:...
  • Page 30 EN-28 Defender 3000 Indicators Service Manual 11.8 x 10.4 x 5.3 in Product dimensions (with bracket) 252 x 176 x 80 mm / 9.9 x 6.9 x 3.1 in Approx. net weight 1.3 kg / 2.9 lb Approx. shipping weight 1.6 kg / 3.5 lb Operating temperature range -10°...

  • Page 31: Table Of Geo Values

    Defender 3000 Indicators Service Manual EN-29 4.2 Table of Geo Values TABLE 4-1 GEO CODES Elevation in meters 1300 1625 1950 2275 2600 2925 3250 1300 1625 1950 2275 2600 2925 3250 3575 Elevation in feet 1060 2130 3200 4260 5330 6400 7460...

  • Page 32: Replacing Major Components (Indicator)

    EN-30 Defender 3000 Indicators Service Manual REPLACING MAJOR COMPONENTS (INDICATOR) Ohaus Indicators are precision instruments and should be carefully handled, stored in a clean, dry, dust-free area, and cleaned periodically. Follow these precautionary steps: – When an Indicator 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.
  • Page 33 Defender 3000 Indicators Service Manual EN-31 5.1.2 i-DT33XW 1. Disconnect the Indicator from the AC power source. 2. Remove the 6 bolts from the Bottom Plate. 3. Disconnect the cable of battery and take out the battery carefully. 4. Remove the 2 screws from LFT plate and 1 screw under the LFT plate.

  • Page 34: Printed Circuit Board (Pcb) Replacement

    EN-32 Defender 3000 Indicators Service Manual 5. Disconnect the battery cable and separate the battery housing carefully. Rubber Seal 6. Reverse the process for the housing assembly. Note: The bolts should be tightened to 2.5 N•m (20-25 in-lb) torque and the rubber seal install properly to ensure a watertight seal.
  • Page 35 Defender 3000 Indicators Service Manual EN-33 CAUTION: When handling the PCB, grasp it by the edges only! Do not touch the foil side. Static discharge may damage some components. 4. Reverse the process for the main PCB assembly. 5. After replacing with a new Main PCB, please refer to Appendix A for configuring.
  • Page 36 EN-34 Defender 3000 Indicators Service Manual 5.2.2 i-DT33XW 1. To open the housing, please refer to section 5.1.2 2. Remove the cables of the Power PCB, LCD backlight, LCD, function label and loadcell from the main PCB. 3. Remove the 3 screws and 1 copper hexagon nut, securely remove the main PCB. CAUTION: When handling the PCB, grasp it by the edges only! Do not touch the foil side.

  • Page 37: Power Pcb Replacement

    Defender 3000 Indicators Service Manual EN-35 5.3 Power PCB Replacement WARNING: Electric Shock Hazard. Disconnect the Indicator from power before servicing. CAUTION: Observe precautions for handling electrostatic sensitive device. 5.3.1 i-DT33P 1. To open the housing, please refer to section 5.1.1. 2.

  • Page 38: Display Replacement

    EN-36 Defender 3000 Indicators Service Manual 5.3.2 i-DT33XW 1. To open the housing, please refer to section 5.1.2. 2. Remove the cable connector from the Power PCB to the Main PCBA. 3. Remove the cable connector from the Power PCB to the AC Inlet connector. 4.
  • Page 39 Defender 3000 Indicators Service Manual EN-37 4. Take out the LCD carefully. 5. Reverse the process for the New LCD display installation. 5.4.2 i-DT33XW 1. To open the housing, please refer to section 5.1.2. 2. Remove the main PCB (section 5.2.2) and Power PCB (section 5.3.2) 3.

  • Page 40: Loadcell Cable Replacement

    EN-38 Defender 3000 Indicators Service Manual 4. Take out the LCD carefully. 5. Reverse the process for the New LCD display installation. 5.3 Loadcell Cable Replacement Cables information: Part Number Description 30613002 Connector Loadcell i-DT61PW Part Number Description 30427858 Loadcell Connector, Short, TD52, i-DT61XWE To open the housing, refer to section 5.1.1.for i-DT33P, section 5.1.2.for i-DT33XW.

  • Page 41: Function Label Replacement

    Defender 3000 Indicators Service Manual EN-39 Replacement Function Label Isolate the top housing follow Section 5.1.1 for i-DT33P and section 5.1.2 for i-DT33XW, and disconnect the function label cable from the main PCB. Carefully remove the old function label from the top housing. It is held in place with a strong adhesive.

  • Page 42: Parts Identification

    This section of the manual contains exploded views for the Defender 3000 Bases. The exploded view drawings are designed to identify the parts, which can be serviced in the field. 6.1 Defender 3000 Series Indicator: i-DT33P Figure 6-1. Defender 6000 series Indicator: i-DT61PW...
  • Page 43 Defender 3000 Indicators Service Manual EN-41 Drawing Item Description Function label Kit EN i-DT33P Function label Kit ZH i-DT33P Function label Kit JP i-DT33P Function label Kit KR i-DT33P Top Housing Kit i-DT33P LCD display Kit i-DT33 Support Kit Main PCBA i-DT33 PCB Main AD7191 i-DT33P PCB Main ADS1230 i-DT33P Switch Power Supply...

  • Page 44: Defender 3000 Series Indicator: I-Dt33Xw

    EN-42 Defender 3000 Indicators Service Manual 6.2 Defender 3000 Series Indicator: i-DT33XW Figure 6-2. Defender 3000 series Indicator: i-DT33XW...
  • Page 45 Defender 3000 Indicators Service Manual EN-43 Drawing Item Description Function label Kit EN i-DT33XW Function label Kit ZH i-DT33XW Function label Kit JP i-DT33XW Function label Kit KR i-DT33XW Top Housing Kit i-DT33XW LCD display Kit i-DT33 Support Kit Main PCBA i-DT33 PCB Main AD7191 i-DT33XW PCB Main ADS1230 i-DT33XW Switch Power Supply...

  • Page 46: Appendix A. Configuring The Main Pcba

    Once a new Main PCBA is installed, you need to perform PCB configure according to their region. 1. Down load and install OHAUS Service and Repair Tools (Version 2.4.3.3 and later). 2. Open the software and select 'Repair Tool' and click 'Next' 3.
  • Page 47 Defender 3000 Indicators Service Manual EN-45 * The communication cable pin configuration. * The Indicator Protocol setting.

  • Page 48: Appendix B. Software Upgrade Via Service Tool

    Note: To perform the software upgrade, connect the indicator with computer via RS232. Please refer to section 1.7.3 for i-DT33P, section 1.7.4 for i-DT33XW for the RS232 connection. 1. Download and install OHAUS Service and Repair Tools (Version 2.4.3.3 and later). 2. Open the software and select 'Repair Tool' and click 'Next' 3.
  • Page 49 Defender 3000 Indicators Service Manual EN-47 8. You will see the below window screen, when it's in the process of the software download. 9. You will see the below window screen when the software download is completed successfully.
  • Page 51 OHAUS Corporation 7 Campus Drive Suite 310 Parsippany, NJ 07054 USA Tel: +1 973 377 9000 Fax: +1 973 944 7177 With offices worldwide www.ohaus.com *30718420* P/N 30718420A © 2021 OHAUS Corporation, all rights reserved...

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