Seca 7031321007 Service Manual
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Seca 7031321007 Service Manual

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Service Manual
for seca 703
Variants:
7031321007
7031321367
7031321993
Description:
Column scale, digital, NEC II electronic and radio module
When servicing or repairing seca devices according to this service manual, always take note of the
instruction manual of the product. To download the latest version of the instruction manual and EMC
Recommendation go to
Contents:
Service instruction electronik
Cableplan
Replacement
Spare parts
Spare parts
Spare parts
Spare parts drawing display
Spare parts drawing baseframe
EMC Recommendation
Instruction manual
Manual number:
17-05-01-377-
www.seca.com
.
30-34-00-812 b
08-02-06-045 c
30-34-00-849
703-13-21-007
703-13-21-367
703-13-21-993
30-34-00-805
30-34-00-807
30-35-00-219
17-10-06-388
Service Manual Number
17-05-01-377-
Valid as of:
01.10.2012

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Summary of Contents for Seca 7031321007

  • Page 1 Column scale, digital, NEC II electronic and radio module When servicing or repairing seca devices according to this service manual, always take note of the instruction manual of the product. To download the latest version of the instruction manual and EMC www.seca.com...
  • Page 2 General information seca Electronics (NEC2) Service Instructions ODEL 374|376|378|703|704|264|274|284|285|954|957|959|963 05.10.12/RLEU/ARI/MRE 1/38 30-34-00-812b...

  • Page 3: Table Of Contents

    General information seca Contents 1 General Information [374|376|378|703|704|264|274|284|285|954|957|959|963]..... 4 Type Plates [374|376|378|703|704|264|274|284|285|954|957|959|963] ..... 4 Design Function Scale Part [374|376|378|703|704|264|274|284|285|954|957|959|963] ............5 1.2.1 Design [374|376|378|703|704|284|285] .............. 5 1.2.2 Function [374|376|378|703|704|284|285]............5 Design and Function of the Head Slider [264|274|284|285] ........6 2 Maintenance [374|376|378|703|704|264|274|284|285|954|957|959|963] ........
  • Page 4 General information seca Scale Error Messages [374|376|378|703|704|284|285|954|957|959|963]....22 Head Slider Error Messages [264|274|284|285]............23 Radio Error Message [374|376|378|703|704|284|285|954|957|959|963] ....24 4 Measurements [374|376|378|703|704|264|274|284|285|954|957|959|963]......25 Supply Voltage [374|376|378|703|704|264|274|284|285|954|957|959|963] ....25 Load Cell [374|376|378|703|704|284|285|954|957|959|963] ........25 4.2.1 Measurement Using a Multimeter [374|376|378|703|704|284|285|954|957|959|963] .............. 25 5 Software intended Purpose....................

  • Page 5: General Information [374|376|378|703|704|264|274|284|285|954|957|959|963]

    General information seca 1 General Information 374|376|378|703|704|264|274|284|285|954|957|959|963 These service instructions are intended for specialist staff responsible for maintenance and repair of the devices. These persons must be familiar with all the relevant electro-technical regulations and must adhere to them any time.

  • Page 6: Design And Function Of The Scale Part [374|376|378|703|704|264|274|284|285|954|957|959|963]

    General information seca Design and Function of the Scale Part [374|376|378|703|704|264|274|284|285|954|957|959|963] 1.2.1 Design [374|376|378|703|704|284|285] The scale consists of the following main parts: the frame with up to four load cells, a display unit, a key panel and a power supply unit.

  • Page 7: Design And Function Of The Head Slider [264|274|284|285]

    General information seca Radio module NEC2 Compact module 08-06-18-172 (Weight measurement and display) 08-06-18-167 oder -163 Keyboard DC Supply Load Load Load Load cell cell cell cell Figure 3: Functional diagram [374|376|378|703] Design and Function of the Head Slider [264|274|284|285] The head slider uses the measuring method of visual reading off from the insert scale.

  • Page 8: Maintenance [374|376|378|703|704|264|274|284|285|954|957|959|963]

    Maintenance seca Maintenance [374|376|378|703|704|264|274|284|285|954|957|959|963] The following section provides an overview of all maintenance jobs which can be carried out. To call up the Service Menu, start the scale while pressing another key at the same time. This causes the content of the calibration counter (i.e. the number of adjustment operations carried out so far) to be displayed for 24 seconds (flashing).
  • Page 9 Long keypress (any key) o XXX.XX (firmware version, e.g. 290.07) Software identification and check digit: The existing seca firmware version number is retained and can be called up. Firmware software identification Each and every firmware is given its own software identification number.

  • Page 10: Adjustment Of Scales [374|376|378|703|704|284|285|954|957|959|963]

    This adjustment must also be carried out whenever the load cell is replaced. seca scales with modular NEC-G2 electronics are fitted with a software- controlled adjustment device that is controlled using the existing operating elements. When developing the adjustment device, special attention was paid to the following requirements: 05.10.12/RLEU/ARI/MRE...

  • Page 11: Calibration Counter / Number Of Adjustments

    1. Non-approved scales are also fitted with a counter which counts the number of adjustments. ” or using seca serva 2.0. Manual adjustment will not correct any corner errors. 2.1.2 Calibration Counter / Number of Adjustments [374|376|378|703|704|284|285|954|957|959|963]...

  • Page 12: Placing Adjustment Weights On The Scale

    Maintenance seca calibration counter (i.e. the number of adjustment procedures carried out so far) are then displayed for 18 seconds (flashing). While the calibration count is displayed, a key must be kept pressed (for more than 1.5 seconds) to switch the scale to adjustment mode.

  • Page 13: Example: Adjusting A Baby Scale With 10G Graduations [374|376]

    Maintenance seca Now increase the value by the first 10 g (by briefly pressing the tare/hold key). After this has been repeated x times, the value 200.0 (rounded!) appears on the display although the internal measured value still is 199.95 kg (not rounded!).
  • Page 14 Maintenance seca been pressed. Press the tare/hold key for more than 1.5 "dec" appears on the display (flashing) seconds. and then the current weight (0.0 - also flashing). Place the test weight on the scale. The measured weight of the test weight appears on the display (flashing).

  • Page 15: Overview Of Adjusting A Baby Scale With 10 G Graduations [374|376|378]

    Maintenance seca 2.1.9 Overview of Adjusting a Baby Scale with 10 g Graduations [374|376|378] Action carried out by the user Result The scale is switched off. No values or characters on the display. Press the tare/hold key and keep it...

  • Page 16: Adjusting The Head Slider [284|285]

    Maintenance seca Again briefly press the tare/hold key (for incremented by 1 g. less than 1.5 seconds). Repeat this step until the measured The display indicates the test weight weight matches the test weight (format: (format: xx.000 kg). xx.000 kg).

  • Page 17: Setting The Gravity Factor [374|703|284|954]

    Maintenance seca Setting the Gravity Factor [374|703|284|954]: The gravity factor can only be set on non-approved models [374|703|284] Before the gravity factor can be set, the scale must first be switched to adjustment mode (see section 0 or 2.1.4). While the calibration count is displayed, a key must be kept pressed (for more than 1.5 seconds) to switch the scale to adjustment mode.

  • Page 18: Example For Gravity Factor Setting [374|703|284|954]

    Maintenance seca 2.4.1 Example for Gravity Factor Setting [374|703|284|954] The current gravity factor shown on the display is 98135 kg mm/s². The target gravity factor is 98150 mm/s². In this example, you must switch the scale to incrementing mode to set the gravity factor.
  • Page 19 Maintenance seca seconds. flashing. Decide whether to decrement or to increment: Incrementing: Press the tare/hold key for more than 1.5 Incrementing mode is activated; "inc" seconds. appears on the display. Decrementing: No action required as the No output on the display.

  • Page 20: Errors [374|376|378|703|704|284|285|954|957|959|963]

    Errors seca 3 Errors [374|376|378|703|704|284|285|954|957|959|963] The following section provides an overview of possible error symptoms, their causes and the steps required to remedy the error. In addition, the error messages generated by the device and ways to eliminate them are explained.

  • Page 21: Error Symptoms For Head Slider [374|376|378|703|704|284|285|954|957|959|963]

    Errors seca Error Symptoms for Head Slider [374|376|378|703|704|284|285|954|957|959|963] Error description Possible causes Remedy Battery not inserted or flat Check the batteries See section 4.1 Voltage supply defective Head slider does Check cable not start connections, check Key panel defective or not...
  • Page 22 Errors seca Error description Possible causes Remedy Device beeps twice when Receiving device not Switch on all devices sending and switched on in the radio network printing Switch off all devices The device within radio Two devices are in the displays “Wait”...

  • Page 23: Scale Error Messages [374|376|378|703|704|284|285|954|957|959|963]

    Scale Error Messages [374|376|378|703|704|284|285|954|957|959|963] Display: Er:x:nr Electronics detecting a fault. X : Module number No Fault number Scale displays Cause Remedy seca serva diagnosis: replace load cell or Load cell defective, electronics as Er:X:11 supply lines damaged or required electronics defective...

  • Page 24: Head Slider Error Messages [264|274|284|285]

    (if provided) Isolate briefly (60 sec) Er:X:40 EEPROM data faulty Readjust the scale or upload the scale adjustment data to the EEPROM via seca serva 2.0 Er:X:41 Incorrect EEPROM Replace the access electronics Er:X:43 EEPROM defective Replace the electronics...

  • Page 25: Radio Error Message [374|376|378|703|704|284|285|954|957|959|963]

    Errors seca Er:X:43 EEPROM defective Replace the electronics Er:X:45 EEPROM defective Replace the electronics Er:X:57 Quartz does not oscillate Replace the electronics Radio Error Message 374|376|378|703|704|284|285|954|957|959|963 Display: Er:x:nr Electronics detecting a fault. X : Module number No Fault number Scale displays...

  • Page 26: Measurements [374|376|378|703|704|264|274|284|285|954|957|959|963]

    The most effective way to identify a defect of the load cell is using the diagnosis function of seca serva 2.0; if this is not available you can alternatively use a multimeter (see 4.2.1). A multimeter measurement, however, is less conclusive so that it should always be second choice.
  • Page 27 Measurements seca Measurement between Ohmic resistance [Ω] and Sig 4 (green and red) ~ 800-850 V- and Sig (green and white) ~ 800-850 ~ 800-850 and Sig- (red and black) and Sig- (white and black) ~ 800-850 /Sig-/V /V- and aluminium >...
  • Page 28 Measurements seca 05.10.12/RLEU/ARI/MRE 27/38 30-34-00-812b...

  • Page 29: Software Intended Purpose

    [374|376|378|703|704|264|274|284|285|954|957|959|963] as well as the seca 360° wireless USB adapter [456] contain software to control wireless communications. This software can be updated using the Windows-based "seca wireless updater" program. Removing or replacing the radio modules is generally not required.

  • Page 30: Updating The Radio Module Software

    Updating the Radio Module Software Two cases can be distinguished: 1) The customer has a seca 360° wireless USB adapter [456] and has carried out set-up for his seca devices and this wireless USB adapter. In this case you should connect the customer's wireless USB adapter to your service PC and update the entire wireless group from your PC.

  • Page 31: Set-Up Process

    Software seca mode (the so-called download kernel). The “Refresh” button refreshes the display. Set-up Process This function corresponds to the set-up process carried out for a device. First of all, select the current wireless group on the left in the main window.

  • Page 32: Updating The Radio Module Software

    Software seca Updating the Radio Module Software The lower part of the main window is intended for the actual updating of the radio modules. The radio modules in the active wireless group are shown in a list together with a symbol.

  • Page 33: Technical Requirements For Updating

    The revision contained on the card is given on the sticker on the SD card. For the seca wireless printer 465, revision code 465d or more recent is required (or 465dc, 465dj, 465dr for the Chinese, Japanese or Russian version).

  • Page 34: Updating Old Printers

    Set-up is not possible in updating mode – it would no longer be possible to identify the corresponding device. In rare cases, updating will fail entirely. The relevant radio module must then be reaced. The radio module can be returned to the seca headquarters for repair. 05.10.12/RLEU/ARI/MRE 33/38...

  • Page 35: Appendixes

    Appendixes seca Appendixes Appendix 1: Measuring points on SECA module 08-06-18-163 [703] 05.10.12/RLEU/ARI/MRE 34/38 30-34-00-812b...
  • Page 36 Appendixes seca Appendix 2: Measuring points on SECA module 08-06-18-165 [704|284|285] 05.10.12/RLEU/ARI/MRE 35/38 30-34-00-812b...
  • Page 37 Appendixes seca Appendix 3: Measuring points on SECA module 08-06-18-167 [374|376|378] 05.10.12/RLEU/ARI/MRE 36/38 30-34-00-812b...
  • Page 38 Appendixes seca Appendix 4: Measuring points on SECA module 08-06-18-195a [284|285] 05.10.12/RLEU/ARI/MRE 37/38 30-34-00-812b...
  • Page 39 Appendixes seca Appendix Measuring points SECA module 08-06-18-186a [264|274|284|285] 05.10.12/RLEU/ARI/MRE 38/38 30-34-00-812b...
  • Page 41 Replacement instructions seca 703 05.10.12 /MRE 30-34-00-849_E...
  • Page 42 Replacement instructions seca 703 Contents Safety measures.............................3 Safety instructions regarding the prevention of electrostatic charging (ESD protective measures) ....3 Baseframe ..............................4 Replacing the load cell...........................4 Setting the overload protection device....................5 Display ................................6 Replacing the membrane keypad ......................6 Replacing battery compartment, NEC2 display and radio module ............7 05.10.12 /MRE...

  • Page 43: I Safety Measures

    Replacement instructions seca 703 Safety measures Before starting any work on the scale, first disconnect the power supply (mains and batteries). II Safety instructions regarding the prevention of electrostatic charging (ESD protective measures) ESD protective measures (electrostatic discharge) must be taken whenever work is performed on electronic components.

  • Page 44: Baseframe

    Replacement instructions seca 703 1 Baseframe Please be sure to observe the sequence listed below when removing/fitting the parts! 1.1 Replacing the load cell  Place the scale on the side and detach the load cell cable connector.  Unscrew the 4 cheese head screws (I) which secure the load cell (O, Fig. 3) to the frame (K).

  • Page 45: Setting The Overload Protection Device

    Replacement instructions seca 703 1.2 Setting the overload protection device  To protect the scale from overload, four overload protection devices are provided on the platform support (Fig. 3).  Use a gauge to set dimensions D in accordance with the drawing in Figure 3.

  • Page 46: Display

    Replacement instructions seca 703 2 Display Please be sure to observe the sequence listed below when removing/fitting the parts! 2.1 Replacing the membrane keypad  Unscrew the side covers (H) on the left and right.  Move the left and the right operating housing slightly outwards and remove the display cover (I).

  • Page 47: Replacing Battery Compartment, Nec2 Display And Radio Module

    Replacement instructions seca 703 2.2 Replacing battery compartment, NEC2 display and radio module First proceed as described in section 2.1.  Remove the right operating housing.  Unscrew the screw on the bottom housing profile which secures the board holder (E) and push the holder slightly to the left –...
  • Page 48 Spare parts list 703 13 21 007 Frame update Sept. 2012, valid until SN.: acc. to drawing 30-34-00-807 Item Article Designation Price stage A020203298807 Frame A011305397816 Threated plug A011004221009 Fixing bolt A011305270009 Plug A020203295816 Column connection A011202002009 Roller complete A080612100009 Load cell 300kg, not approved A020403246816...
  • Page 49 Spare parts list 703 13 21 007 Display update Sept. 2012, valid until SN.: acc. to drawing 30-34-00-805 Item Article Designation Price stage A340201226807 Profile A340201216807 Operating housing left A340204427009 Membrane keyboard FFC A340201217807 Operating housing right A340201219807 Cover operating housing right A340201026602 Display cover, printed A340201220807...
  • Page 50 Spare parts list 703 13 21 367 Frame update Sept. 2012, valid until SN.: acc. to drawing 30-34-00-807 Item Article Designation Price stage A020203298807 Frame A011305397816 Threated plug A011004221009 Fixing bolt A011305270009 Plug A020203295816 Column connection A011202002009 Roller complete A080612100009 Load cell 300kg, not approved A020403246816...
  • Page 51 Spare parts list 703 13 21 367 Display update Sept. 2012, valid until SN.: acc. to drawing 30-34-00-805 Item Article Designation Price stage A340201226807 Profile A340201216807 Operating housing left A340204427009 Membrane keyboard FFC A340201217807 Operating housing right A340201219807 Cover operating housing right A340201026602 Display cover, printed A340201220807...
  • Page 52 Spare parts list 703 13 21 993 Frame update Sept. 2012, valid until SN.: acc. to drawing 30-34-00-807 Item Article Designation Price stage A020203298807 Frame A011305397816 Threated plug A011004221009 Fixing bolt A011305270009 Plug A020203295816 Column connection A011202002009 Roller complete A080612100009 Load cell 300kg, not approved A020403246816...
  • Page 53 Spare parts list 703 13 21 993 Display update Sept. 2012, valid until SN.: acc. to drawing 30-34-00-805 Item Article Designation Price stage A340201226807 Profile A340201216807 Operating housing left A340204427009 Membrane keyboard FFC A340201217807 Operating housing right A340201219807 Cover operating housing right A340201026602 Display cover, printed A340201220807...

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