OHAUS TROOPER Service Manual Download Page 70

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Ohaus Corporation
19A Chapin Road,
P.O. Box 2033
Pine Brook, NJ 07058, USA
Tel: (973) 377-9000,
Fax: (973) 593-0359
www.ohaus.com

With offices worldwide.
www.ohaus.com

P/N 80250952

*80250952*

Summary of Contents for TROOPER

Page 1: ...Ohaus Corporation 19A Chapin Road P O Box 2033 Pine Brook NJ 07058 973 377 9000 TROOPER SCALE TROOPER COUNT SCALE SERVICE MANUAL...

Page 2: ......

Page 3: ...ty arising from the use or misuse of this material Reproductionofthismaterialisstrictlyprohibited Material in this manual is subject to change Copyright 2004 Ohaus Corporation all rights reserved Regi...

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Page 5: ...Scale Main PC Board 3 2 3 3 Replacing the Trooper Scale Load Cell Assembly 3 4 3 4 Replacing the Trooper Count Scale Membrane Switch 3 6 3 5 Replacing the Trooper Count Scale Main PC Board 3 7 3 6 Re...

Page 6: ...APPENDIX B TROOPER COUNT SCALE TOOLS B 1 Introduction B 1 B 2 Installation B 1 B 2 1 Minimum Requirements B 1 B 2 2 Connecting the RS232 Interface B 1 B 2 3 Installing the Trooper Count Scale Tools S...

Page 7: ...le Specifications 4 6 4 2 Trooper Count Scale Specifications 4 6 4 3 Trooper Scale RS232 Commands 4 8 4 4 Trooper Count Scale RS232 Commands 4 9 5 1 Trooper Scale TR and Trooper Count Scale TC Parts L...

Page 8: ...n of Standard Deviation 4 4 4 6 Off Center Load Test Weight Locations 4 4 4 7 RS232 Interface Pin Connections 4 8 5 1 Expoded View of Trooper Scale and Trooper Count Scale 5 2 LIST OF ILLUSTRATIONS Co...

Page 9: ...ommunications testing procedures Chapter 5 Parts Lists Contains exploded views of Trooper Scale and Trooper Count Scale identifying all serviceable replacement components with associated parts lists A...

Page 10: ...er 120V 60Hz US Ohaus P N 80500435 8 AC adapter 230V 50Hz EU Ohaus P N 80500436 9 AC adapter 230V 50Hz UK Ohaus P N 80500437 10 AC adapter 240V 50 Hz AU Ohaus P N 80500462 11 Load Cell Simulator 1 3 C...

Page 11: ...ver Assembly with Membrane Switch Load Cell Assembly with Frame and the Main PC Board with LCD The Trooper Count Scale contains 4 major replaceable assemblies Cover Assembly with Membrane Switch Displ...

Page 12: ...1 4 CHAPTER 1 INTRODUCTION...

Page 13: ...rconnection and wiring diagrams in this section to assist in locating the problem SYMPTOM Scale will not turn on with AC adapter supplied PROBABLE CAUSE Adapter defective DC input connector at rear of...

Page 14: ...of connector J6 on the Main PC Board See Figure 2 1 Voltage should read ap proximately 9 Volts dc If voltage is not presentattheconnector removethebat teries and make a continuity test be tween each o...

Page 15: ...switch cable they should all be open then press each button and check that the resistance is zero for each button If continuity is not present the membrane switch is de fective Replace Membrane Switc...

Page 16: ...set to ON LCL On Load cell assembly defec tive REMEDY Verify that proper weights are used Set LFT lock switch to unlocked posi tion and or Set the software lock menu to OFF LCLOFF then refer to instru...

Page 17: ...dures 3 3 NOTE Readings may differ from table due to load cell tolerances Reassemble the scale perform tests in Section 5 and verify operation If the above readings are within limits the Main PC Board...

Page 18: ...e is being used Improper settings in the Print menu Main PC Board is defective REMEDY Tighten connectors and use the proper cable Ensurethatthecommunicationsparam eters of the scale and periphal devic...

Page 19: ...ng Diagram 2 4 TROOPER SCALE DIAGRAMS Load Cell 9 8 6 7 1 2 3 4 5 GND TXD RXD SIG SIG EXE EXE CGND Yellow 1 J4 5 4 3 2 1 Membrane Switch Red 3 4 White 5 6 Orange Green 7 1 White 2 3 J10 Black 2 3 1 Bl...

Page 20: ...nal is outside the allow able limit Checksumerror REMEDY Replace batteries Remove excess load Check load cell connections Refer to the Troubleshooting Tables Press the ON ZERO Off button If the proble...

Page 21: ...ove the 6 screws from the bottom cover of the scale carefully remove the platform top cover and remove the three flexible cables from the Main PC board Reconnect the ac adapter to the scale Check dc v...

Page 22: ...nector J7 on the Main PC board See Figure 2 3 Voltage should read approxi mately 9 Volts dc If voltage is not present attheconnector removethebatteriesand make a continuity test between each of the co...

Page 23: ...y should all be open then press each button and check that the resistance is zero for each button If continuity is not present the mem brane switch is defective Replace membrane Switch Repair proce du...

Page 24: ...e connectors were not loose The display PC board is replaced as a whole assembly Check procedures in Table 2 8 first and verify that other prob lems do not exist Install a new display PC board connect...

Page 25: ...he voltage is much lower disconnect the load cell from the Main PC Board and measure again If 5V dc is present theloadcellmaybeshortedand requiresreplacement With the platform in place and the scale t...

Page 26: ...3 5 SYMPTOM Communications cannot be established with scale turned on TABLE 2 13 TROOPER COUNT SCALE COMMUNICATIONS FAILURE PROBABLE CAUSE REMEDY LOAD CELL OUTPUT READINGS MODEL SPAN SIGNAL TC3RS 4 0...

Page 27: ...ARD TROOPER COUNT DISPLAY BOARD TROOPER COUNT DISPLAY BOARD J1 J4 POWER SUPPLY 9VDC POWER SUPPLY 9VDC LOAD CELL LOAD CELL EXE EXE SIG SIG SIG SIG EXE EXE ORANGE ORANGE CGND CGND J1 J6 J8 J7 J10 RED RE...

Page 28: ...ring program run ning REMEDY Replace batteries Removeexcessload RefertotheTrouble shooting Tables Press the ON ZERO Offbutton If problem persists refer to the troubleshooting sec tion to check load ce...

Page 29: ...stable at power on Interference between plat form and load cell REMEDY Recalibrate scale If the problem per sists replace the Main PC board or Load Cell Recalibrate the scale Enter proper value within...

Page 30: ...COL3 COL3 COL2 COL2 COL1 COL1 ROW4 ROW4 ROW3 ROW3 ROW2 ROW2 ON OFF ON OFF ROW1 ROW1 GND GND 1 1 1 2 2 3 3 4 4 5 5 2 2 2 1 2 2 2 2 1 1 2 1 1 1 1 2 1 2 1 1 2 2 1 1 1 1 2 1 1 2 2 1 2 1 1 2 1 1 8 9 O N O...

Page 31: ...housing about two to three inches Reach under the upper housing from the front and carefully disconnect the flexible cable from connector J5A on the Main PC board 5 On the upper housing lift up the de...

Page 32: ...the four corner screws on the Main PC Board 5 Replace the Main PC Board and install the four screws previously removed NOTE Make sure that Jumper 1 and Jumper 2 are connected as shown in Figure 3 1 6...

Page 33: ...itch in its OFF position 16 Turn the scale off then on It will go through all the self testing 17 If the scale locks up with software revision showing this means that W1 is in the closed position and...

Page 34: ...the scale and connect the flexible cable from the membrane switch to connector J5A on the Main PC board 8 Check the LFT lock switch Make sure it is in the ON position 9 Turn on the scale When self tes...

Page 35: ...BATTERY BOX LOAD CELL PC BOARD LCD DISPLAY FERRITE CORE BATTERY BOX POWER CONNECTOR CABLES LOAD CELL CABLE RS232 CABLE MEMBRANE SWITCH CONNECTOR LFT LOCK SWITCH LOAD CELL ASSEMBLY 3 3 REPLACING THE T...

Page 36: ...d Two cables are part of the membrane switches and the other cable is for the display PC board 5 On the upper housing lift up the defective membrane switch if necessary carefully prying it up with a k...

Page 37: ...s coming from J6 which is the RS232 connector See Figure 3 5 for wire color and locations 4 Remove the four corner screws on the Main PC Board 5 Replace the Main PC Board and install the four screws p...

Page 38: ...d Write Config Data to Scale 16 The configuration data will be written to the scale and a calibration will start Follow the on screen directions 17 Turn the scale off then on It will go through all th...

Page 39: ...back into the scale and calibrate the scale 3 7 REPLACING THE TROOPER COUNT SCALE LOAD CELL ASSEMBLY The Load Cell Assembly is centrally located inside the scale See Figure 3 6 The Load Cell is facto...

Page 40: ...DISPLAY POWER SIGNALCABLE DISPLAY CONNECTOR SCALE BASE TOP COVER 10 Place the top cover and platform temporarily on the scale 11 Refer to Appendix A and perform a LIN calibration 12 Turn the scale off...

Page 41: ...nnect to the scale 4 1 1 Segment Display Test Turn the scale on all segments are enabled and displayed breifly followed by a software revision number This is a segment display test Figure 4 1 is a ful...

Page 42: ...bilityTest Repeatability is the standard deviation of a set of similar weight readings To determine the repeatability perform the following test 1 Zero the scale The reading on the display should be 0...

Page 43: ...mn perform the following steps 1 Record the sum of the ten weight readings here 2 Record the Mean Avg of the ten weight readings here SUM divided by 10 3 For each weight reading subtract the calculate...

Page 44: ...2 0484 8 3000 0 02 0004 9 3000 0 02 0004 10 3000 0 02 0004 SUM 30 000 2 SUM 0 116 Mean SUM 10 Variance SUM 9 0129 Mean 3000 02 Variance 0 114 Figure 4 6 Off Center Load Test Weight Locations 4 3 2 Off...

Page 45: ...d tolerance specified in Table 4 1 for Trooper Scale and Table 4 2 for Trooper Count Scale 4 3 3 LinearityTest The Linearity test is used to determine the linearity of the scale throughout its operati...

Page 46: ...g 2g 5g Repeatability 0 5g 1g 2g 5g Off Center Load 0 5g 1g 2g 5g TABLE 4 1 TROOPER SCALE SPECIFICATIONS 4 5 TROOPER COUNT SCALE SPECIFICATIONS TABLE 4 2 TROOPER COUNT SCALE SPECIFICATIONS Model TC3RS...

Page 47: ...s can be sent to the scale to verify operation 4 6 1 Setting Trooper Scale Print Menu The Trooper Scale Print menu provides communication parameters which can be set to accommodate external printers o...

Page 48: ...shown in the RS232 Command Table 4 3 and 4 4 are acknowledged by the scale Invalid command response ES error indicates the scale has not recogonized the command Commands sent to the scale must be ter...

Page 49: ...TE If LFT is ON special tare rules apply Z Same as pressing ZERO button If the Scale accepts the command it will respond OK TABLE 4 4 TROOPER COUNT SCALE RS232 COMMANDS 4 6 3 Connecting the RS232 Inte...

Page 50: ...4 10 CHAPTER 4 TESTING...

Page 51: ...thoroughly checked after the replacement is made The scale MUST meet the parameters of all applicable specifications in this manual If further technical information is needed in the United States call...

Page 52: ...5 PARTS LISTS Figure 5 1 Exploded View of Trooper Scale and Trooper Count Scale 5 1 Trooper Scale Trooper Count Scale Exploded View 20 19 3 18 21 16 15 22 17 12 13 14 10 8 11 9 6 23 4 5 2 26 24 25 7...

Page 53: ...ssembly 15kg TC15RS 1 6 71141919 Load Cell Assembly 30kg TC30RS 1 7 71134281 Main PCB Asembly TR 1 7 71138662 Main PCB Asembly TC 1 8 See Note 1 Screw M4x6 2 9 See Note 1 Screw M3x8 2 10 See Note 1 Wa...

Page 54: ...1115243 Spacer Rubber TR TC 4 26 71116785 Display LCD TC 1 71139672 Fastener Kit TR TC 1 71138587 Sealing Kit TR TC 1 80500435 AC Adapter 120V 50 60Hz US 1 80500436 AC Adapter 230V 50 60Hz EU 1 805004...

Page 55: ...table during this period Press G N T MENU button C is displayed The scale MUST be stable during this period and is establishing the intermediate point After a few seconds the display flashes FULLCP an...

Page 56: ...button then press the Enter but ton Follow display instructions kg g lb oz Net B G Ac T PT APW MR M PCS WEIGHT DATA COUNT BLINKING M PCS COUNT M PCS COUNT kg g lb oz Net B G Ac T PT APW MR M PCS WEIG...

Page 57: ...vecalibrationmassesfrom pan To return to weighing press the Data button Place the indicated calibration mass on the pan Press the Enter button The sample illustration indicates a 6kg Scale using a 6kg...

Page 58: ...ty cal fixed MassesTotaling TR3RS 2 3 kg TR6RS 4 6 kg TR15RS 10 15 kg TR30RS 20 30 kg Cal in lb Linearity cal fixed MassesTotaling TR3RS 4 6 lb TR6RS 10 15 lb TR15RS 20 30 lb TR30RS 40 60 lb TABLE A 1...

Page 59: ...n the RS232 serial port of the Trooper Count Scale and the serial port of the computer Note which serial port of the computer i e COM1 COM2 etc the cable was connected as this information may be requi...

Page 60: ...le Personality Setup and Menu Setup parameters Serial No Serial No Serial No Serial No Serial No Up to a 6 digit serial number of the Trooper Count Scale is entered in this field Metric Unit Setting M...

Page 61: ...nfiguration Screen items are described as follows Personality Setup and Menu Setup Personality Setup and Menu Setup Personality Setup and Menu Setup Personality Setup and Menu Setup Personality Setup...

Page 62: ...APW Average Piece Weight APW Average Piece Weight APW Average Piece Weight APW Average Piece Weight APW Average Piece Weight The total weight of a given number of pieces of the item divided by the num...

Page 63: ...Read Scale Library Button Select this button to read extract the library data from the scale Library data will be uploaded from the scale and displayed on screen Write Lib to Scale Button Write Lib to...

Page 64: ...following section Specify the source directory folderandfilenameaspromptedonthefollowing Open screen Thenselect Open to execute the process Write to File Button Write to File Button Write to File Butt...

Page 65: ...e lettersonly TheavailableTestCommandsarelistedanddescribedasfollows forexamples refertoTest CommandScreen P Print P Print P Print P Print P Print Displays the print data output of the scale on the Re...

Page 66: ...specified when selecting Manual Setup bolded selections are default settings Port Port Port Port Port Available selections are COM1 COM1 COM1 COM1 COM1 COM2 COM3 or COM4 Baud Rate Baud Rate Baud Rate...

Page 67: ...ary File Library error Read Library File Library error Read Library File Library error Read Library File The following error message appears after selecting the Read Library File Button from the Libra...

Page 68: ...B 10 APPENDIX B TROOPER COUNT SCALE TOOLS...

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Page 70: ...19A Chapin Road P O Box 2033 Pine Brook NJ 07058 USA Tel 973 377 9000 Fax 973 593 0359 www ohaus com With offices worldwide www ohaus com P N 80250952 Printed in USA Ohaus Corporation 2004 all rights...

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