OHAUS RU-U2, Service Manual

Page 1: ...RU RU Service Manual RU RU U2 RU C2 Edition January 2010...

Page 2: ...ed in any form or by any means electronic or mechanical including photocopying and recording for any purpose without the express written permission of Ohaus Inc U S Government Restricted Rights This d...

Page 3: ...eshooting 11 4 Calibration 14 5 PC software 16 6 Flashing Software 17 7 POWER SUPPLY 18 8 Main Logic PCB 19 9 Load Cell 21 10 Warning Messages 22 10 1 Error Messages 23 11 Interconnecting Diagram 25 1...

Page 4: ...nt FOLLOW these instructions carefully SAVE this manual for future reference DO NOT allow untrained personnel to operate clean inspect maintain service or tamper with this equipment ALWAYS DISCONNECT...

Page 5: ...C The standard RU weighing capacity is 6kg 15kg 12kg or 30kg range This scale integrates seven segment displays on each display for weight tare unit price and total price It also includes a 16 charact...

Page 6: ...A 142 position preset keyboard RU U2 for fast PLU retrieval Different type may have different preset key quantity RU C2 has 56 Real time clock and RAM are backed up by a lithium rechargeable battery...

Page 7: ...haracters for commodity description marquee and prompt messages during programming The Weight and Total Price display characters are 12mm high by 7 4mm wide The Tare and Unit Price display are 10mm hi...

Page 8: ...retain backup PLU s and the time date in the SRAM memory for up to one month Other data including calibration data are retained in the EEPROM which requires no battery for memory retention 2 7 Label P...

Page 9: ...not be shared with noise and surge generating equipment such as electric motors compressors thermostats fluorescent lights etc A line conditioning device is recommended to provide protection from sur...

Page 10: ...ce Manual RU OHAUS Page 10 53 11 01 2010 Ohaus 2 10 Major Component Map Ref Description A Display B Tower C Platter supporter D Printer E Numeric Keypad F Preset Keypad G Power switch B A D E F G A A...

Page 11: ...OPERATIVE 1 Check keyboard connection on keyboard controller PCB 2 Check Keyboard controller connection to Main Logic ensure all connections are secure 3 If all connections are secure and keyboard is...

Page 12: ...pen 5 Adjust label Gap Sensor through SENSOR TEST in Service Mode 6 Replace Gap Sensor Assembly 7 Replace Main Logic PCB LABELS DARK 1 If labels are printed correctly but are excessively dark check th...

Page 13: ...F ONE IS NOT YET TAKEN 1 Check PAP END DET option in Service Mode Paper End Detection 2 Check Take Label Sensor 3 Check Main Logic PCB OUT OF LABELS ERROR 1 Make sure labels are threaded through the G...

Page 14: ...Screw out sealing screw operation operation display description enter the menu enter calibration QUIET 0 2 ambience condition 0 quiet 1 normal 2 disquiet enter to calibrate PUSH CAL BUTTON push calibr...

Page 15: ...increment if necessary select increment READ THE ZERO capture zero ADD WEIGHT 0 000 input standard weight value and put on platter put standard weight on platter DONE capture the weight SHUT DOWN turn...

Page 16: ...atible PC with Windows 95 NT or higher version operating system One serial port or Ethernet port is required The wiring diagrams shown in the following figure can be used to make cables from a 25 pin...

Page 17: ...ther end to the RU serial port Power ON the scale The scale will display WAIT FOR HOST to wait for PC signal Then enter the HyperTerminal to select right COMM port of the computer Then set the data as...

Page 18: ...ected as being in the Main Logic PCB or a component that connects to the Main Logic PCB If the output voltage is zero check the 120 VAC input voltage If the correct AC input voltage is present but the...

Page 19: ...g the thermal printer Inputs and Outputs to the Main Logic include the Label Taken Sensor Gap Sensor Printer head Stepper Motor Rewind Motor Load Cell and etc The following Figure shows the locations...

Page 20: ...Service Manual RU OHAUS Page 20 53 11 01 2010 Ohaus...

Page 21: ...ing a steady 10VDC 0 25VDC If the Excitation voltage is good the signal output can be checked across SIG SIG Set the meter to read in millivolts mV Put the positive lead on the left pin of F2 and nega...

Page 22: ...e configured label format LABEL MOVED The stepper motor or the rewind motor is not working properly CHANGE PAPERROLL The label roll is not installed or the label roll is empty TAKE LABEL OFF Take off...

Page 23: ...off and on In many cases the error will disappear There are 3 different kinds of error messages Error Status 1 Warning After the warning the scale can still be used Error Status 2 Press CODE key Chan...

Page 24: ...XX 01 Operator 07 Group data 02 Ticket data 13 Label data 03 Time total data 15 Date text data 04 Text data 21 PLU label data 05 Barcode data 23 Store adress 06 Tare data 24 PLU data Meaning of YY 01...

Page 25: ...Service Manual RU OHAUS Page 25 53 11 01 2010 Ohaus 11 Interconnecting Diagram...

Page 26: ...take out the power cable from electrical outlet Take away platter Screw out the 5 bolts A from base and take away Show main PCB Pull out all connection from main PCB Screw out 6 bolts B from main PCB...

Page 27: ...latter Screw out the 5 bolts A from base and take away Pull out the harness in switch power Screw out 4 bolts in the power PCB Take away the switch power Install switch power Put the switch power to t...

Page 28: ...isplay Screw 5 bolts of the front display pull out harness and take away the display Screw 4 bolts of back display and pull out harness take away back display Install display Put the back display to r...

Page 29: ...Service Manual RU OHAUS Page 29 53 11 01 2010 Ohaus 15 Replace load cell...

Page 30: ...d take out spacer Also take out load cell spacer Also screw 2 screws for installing load cell under the scale Take away load cell Install load cell Put the load cell to right position Install 2 screws...

Page 31: ...US Page 31 53 11 01 2010 Ohaus Install the up cover print paper cover up spacer screws in interface PCB cover of main PCB at bottom etc Adjust 4 screws in up spacer and let the spacer levelly Put on p...

Page 32: ...ver kits Pull out the harness of keyboard from the keyboard convert PCB Rip off the keyboard overlay take out it Install keyboard Clean the keyboard cover with alcohol and wait it till dry Let harness...

Page 33: ...Service Manual RU OHAUS Page 33 53 11 01 2010 Ohaus 17 Replace printer I...

Page 34: ...onnect the harness in printer PCB and connect ground wire Take out printer also with sliding feet under it Install printer Put the sliding base to right position Insert the harness of the printer PCB...

Page 35: ...cal outlet Take away platter Open printer door pull out printer Screw out 2 screws J for fixing printer head Pull out the harness from printer head Take away printer head Install printer head Insert t...

Page 36: ...Service Manual RU OHAUS Page 36 53 11 01 2010 Ohaus 19 Install wireless card Steps as below A1 B1 C1 D1 E1 F1 G1 H1 I1 J1 K1 L1...

Page 37: ...the bolts in the bottom of scale Put the wireless kit A1 to the position G1 Install the bolts to it H1 Take out the seal from hole I1 Put the Ethernet harness through the hole J1 Connect the Ethernet...

Page 38: ...iquid directly on the unit A mild spray cleaner can be used by spraying the cleaning cloth 20 2 Cleaning Printer head Turn the scale off by placing the power switch to the OFF position Disconnect powe...

Page 39: ...for small weight change This device is not activated when a package tare is compensated After cleaning the dirt from the platter with the scale on the display can read A negative value Or _ _ _ _ _ se...

Page 40: ...ut with the requested licenses and the PID Enter the PID and the serial number of the product in bPlus Go to http partner mt com or contact your service support team 6 LID yes enter the LID you receiv...

Page 41: ...53 11 01 2010 Ohaus 22 Exploded Diagrams RU C2 RU C2 Item P N Description Qty 1 72240536 Label roll cover RU 1 2 183021 Platter 1 3 102326 Leveling Bubble 1 4 124041 Cap Spider Center 1 5 154555 Cap S...

Page 42: ...Harness AC Power Socket 1 16 72187456 Harness AC power Switch 1 17 173307 PCB Assembly interface 1 18 167391 FOOT Long left 2 19 72186444 Sheet Metal Support interface 1 20 72186387 Switching Power Su...

Page 43: ...upport A display 1 44 72189191 Display Assembly segment EURO 2 45 180944 Display Housing 2 46 72239245 Display lens front C2 RU 1 47 156439 Harness Customer display 1 48 173248 Harness Main pcb to pri...

Page 44: ...72192905 SLOT SCREW M5X16 GB79 85 4 B8 72194324 NUT M4 2 B9 72201474 SCREW M2 9X6 5 GB845 6 B10 72201466 SCREW M3X6 GB818 18 B11 102661 SPRING WASHERS 4 B12 72201469 SCREW M4X14 GB819 3 B13 142884 SL...

Page 45: ...Service Manual RU OHAUS Page 45 53 11 01 2010 Ohaus RU U2 RU U2 Item P N Description Qty 1 180945 Sheet Metal support A display 1 2 72189191 Display Assembly segment EURO 2...

Page 46: ...e 1 15 124041 Cap Spider Center 1 16 180974 Spider 1 17 122206 Sealing Sticker EU 1 18 72192054 Sealing Cover 1 19 154555 Cap Spider Corner 4 20 180943 Main Housing Cover 1 21 72185423 Spider support...

Page 47: ...UpperKB 1 43 72183678 Sheet Metal support display 1 44 72186402 Printer Rail 1 45 72186086 Keyboard Housing Base 1 46 72187458 Harness Main pcb to interface 1 47 180947 Door 1 48 173248 Harness Main...

Page 48: ...01468 SCREW M3X10 GB819 2 B6 72189609 SCREW M4X8 GB818 85 9 B7 72201473 SCREW M6X20 GB70 85 4 B8 72194324 NUT M4 2 B9 72201464 SCREW M2X6 GB67 2 B10 72201470 SCREW M4X5 21 B11 150684 CIRCLIPS 3 2 2 B1...

Page 49: ...Service Manual RU OHAUS Page 49 53 11 01 2010 Ohaus...

Page 50: ...gramming layer C2 RU 72239244 Keyboard Programming layer U2 RU 72239241 Keyboard Operating layer C2 RU 72193827 Keyboard Rubber button padding C2 RU 72186581 Keyboard Rubber button padding U2 RU 72193...

Page 51: ...U 72176945 Platen Printer RU 72177034 Printhead Adaptor Printer RU 72177100 Lock Printer RU 72177102 Tear bar Assembly Printer RU 72177788 Printer head 54mm KPC 54 RU 72180157 Spacer Nylon Printerboar...

Page 52: ...pter new changed canceled discription Front page Delete address telephone fax and internet add another page to last All Change seite to page Others Change as to RU requirements Edition Dec 09 V0 Chapt...

Page 53: ...ance with local regulations at the collecting point specified for electrical and electronic equipment If you have any questions please contact the responsible authority or the distributor from which y...