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Variants:
2841300009
2841300109
2857000009
2857000099
2857000159
2857000199
2857000229
2857000249
Content:
Service instructions electronic
Cable plan
Cableplan slider
Replacement
Spare parts
Spare parts
Spare parts
Spare parts
Spare parts
Spare parts
Spare parts drawing slider
Spare parts drawing Display
Spare parts baseframe
Manual number:
17-05-01-353-a
Service Manual
for seca 284/285
Description:
Measuring station, digital
Service Manual Number
17-05-01-353-a
Valid as of:
30-34-00-812 a
08-02-06-053 a
08-02-06-052 b
30-34-00-811
284-13-00-009
284-13-00-109
285-70-00-009
285-70-00-099
285-70-00-159
285-70-00-199
30-19-17-252
30-34-00-803
30-34-00-804
01.08.2011

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Summary of Contents for Seca 2841300009

  • Page 1 Service Manual Variants: for seca 284/285 2841300009 2841300109 2857000009 2857000099 Service Manual Number 2857000159 2857000199 17-05-01-353-a 2857000229 Valid as of: 01.08.2011 2857000249 Description: Measuring station, digital Content: Service instructions electronic 30-34-00-812 a Cable plan 08-02-06-053 a Cableplan slider 08-02-06-052 b...
  • Page 2 General information seca Electronics (NEC2) Service Instructions ODEL 374|376|378|703|704|264|274|284|285|954|957|959|963 17.08.11/RLEU/ARI/MRE 1/36 30-34-00-812a...
  • 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 and Function of the 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]....20 Head Slider Error Messages [264|274|284|285]............21 Radio Error Message [374|376|378|703|704|284|285|954|957|959|963] ....22 4 Measurements [374|376|378|703|704|264|274|284|285|954|957|959|963]......23 Supply Voltage [374|376|378|703|704|264|274|284|285|954|957|959|963] ....23 Load Cell [374|376|378|703|704|284|285|954|957|959|963] ........23 4.2.1 Measurement Using a Multimeter [374|376|378|703|704|284|285|954|957|959|963] .............. 23 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 modulel 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]

    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. 17.08.11/RLEU/ARI/MRE 7/36...
  • Page 9: Calibration Counter / Number Of Adjustments

    Contents [284|285] To begin readjustment or to display the calibration counter contents, start the scale and press another key while the display shows seca. The contents of the calibration counter (i.e. the number of adjustment procedures carried out so far) are then displayed for 18 seconds (flashing).
  • Page 10: Example: Adjusting A Scale With 100 G Graduations [703|704|284|285]

    Maintenance seca Adjustment can now be completed by pressing a key until the display shows “Sto”. The scale computes and stores a new linearity coefficient and switches off automatically. Your scale is now adjusted. Remove the test weight. Note Timeout control is not active for the phase of placing and confirming the test weight.
  • Page 11: Overview Of Adjusting A Scale With 100 G Graduations [703|704]

    Maintenance seca Complete the readjustment procedure as described in section 2.1.5. 2.1.8 Overview of Adjusting a Scale with 100 g Graduations [703|704 Action carried out by the user Result The scale is switched off. No values or characters on the display.
  • Page 12 Maintenance seca less than 1.5 seconds). change the value on the display due to the low display resolution. Only the rounded value is output. Repeat this step until the measured The display indicates the test weight weight matches the test weight (format: (format: xxx.0 kg).
  • Page 13: 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 14: 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 15: 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 16: 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 17 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 18: 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 19: 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 20 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 21: 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 22: 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 23: 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 24: 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 25 Measurements seca Messung zwischen Ohmscher Widerstand [Ω] und Sig 4 (grün und rot) ~ 800-850 V- und Sig (grün und weis) ~ 800-850 und Sig- (rot und schwarz) ~ 800-850 und Sig- (weiß und schwarz) ~ 800-850 /Sig-/V /V- und Alukörper >...
  • Page 26 Measurements seca 17.08.11/RLEU/ARI/MRE 25/36 30-34-00-812a...
  • Page 27: 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 28: 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 29: 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 30: 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 31: 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 32: 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. 17.08.11/RLEU/ARI/MRE 31/36...
  • Page 33: Appendixes

    Appendixes seca Appendixes Appendix 1: Measuring points on SECA module 08-06-18-163 [703] 17.08.11/RLEU/ARI/MRE 32/36 30-34-00-812a...
  • Page 34 Appendixes seca Appendix 2: Measuring points on SECA module 08-06-18-165 [704|284|285] 17.08.11/RLEU/ARI/MRE 33/36 30-34-00-812a...
  • Page 35 Appendixes seca Appendix 3: Measuring points on SECA module 08-06-18-167 [374|376|378] 17.08.11/RLEU/ARI/MRE 34/36 30-34-00-812a...
  • Page 36 Appendixes seca Appendix 4: Measuring points on SECA module 08-06-18-195a [284|285] 17.08.11/RLEU/ARI/MRE 35/36 30-34-00-812a...
  • Page 37 Appendixes seca Appendix Measuring points SECA module 08-06-18-186a [264|274|284|285] 17.08.11/RLEU/ARI/MRE 36/36 30-34-00-812a...
  • Page 38 VccOnOff VCC OnOff...
  • Page 40 Replacement instructions seca 284/ 285 13.09.2010 /KSP 30-34-00-811...
  • Page 41 Replacement instructions seca 284/ 285 Contents Safety measures............................. 3 Safety instructions regarding the prevention of electrostatic charging (ESD protective measures) ....3 Baseframe ..............................4 Replacing column elements........................4 Replacing the glass plate, load cells and weight module ..............4 Slider................................
  • Page 42: I Safety Measures

    Replacement instructions seca 284/ 285 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 43: Baseframe

    Replacement instructions seca 284/ 285 1 Baseframe Please be sure to observe the sequence listed below when removing/ fitting the parts! 1.1 Replacing column elements • Remove the insert scale. • Start with the uppermost column element. • First remove the nut (A) from the uppermost column element, remove the column, next...
  • Page 44: Slider

    Replacement instructions seca 284/ 285 • Between the rubber buffers (R) and the load cells (H) in the frame there are shim rings which allow the glass plate (G) to be fitted free of tension. When refitting the glass plate (G) make sure it is free from tension.
  • Page 45: Replacing The Brake Lining

    Replacement instructions seca 284/ 285 2.2 Replacing the brake lining • To replace the brake lining (D) it is not necessary to dismantle the slider! • Unscrew the setscrew (E) from the brake switch (F) and use a thin tool to press out the brake lining (D);...
  • Page 46: Setting The Sliding Elements And The Brake

    Replacement instructions seca 284/ 285 2.4 Setting the sliding elements and the brake • To set the friction of the sliding elements (G; H, Fig. 6) when the brake switch (F) is pressed, the screws (J) on the jacket backsides (K; L) can be screwed in or out.
  • Page 47: Replacing The Electronics

    Replacement instructions seca 284/ 285 2.5 Replacing the electronics • Remove the battery holder and slacken the screw (Y). • Position the slider (A) vertically, grip the battery compartment (N) at the tip of the battery compartment (N1) and pull out the battery compartment (N) horizontally from the slider (A).
  • Page 48: Display

    Replacement instructions seca 284/ 285 3 Display Please be sure to observe the sequence listed below when removing/fitting the parts! 3.1 Replacing the front glass, electronics and radio module • • • • Remove the display unit completely (E). • • • • Carefully detach the front glass (K) from the display unit (F).
  • Page 49: Replacing The Modular Cable

    Replacement instructions seca 284/ 285 3.2 Replacing the modular cable • Open the logo compartment (I). • To install: guide the modular cable (A) through the front compartment (L) as shown on the photo. Figure 12: Replacing modular cable and logo compartment ATTENTION: The cable end must project 110 –...
  • Page 50 Spare parts 284 13 00 009 Slider updated 07.10 valid to SN: acc. to drawing 30-19-17-252 Pos. Article Name of item price-stage 19-17-02-022-505 slider complete in change 19-17-02-022 509 slider complete 19-17-02-027-509 slider frontcover 19-17-02-269-009 jacket backside right 19-17-02-286-009 brake button 19-17-02-288-009 block pad 01-07-05-304-009...
  • Page 51 Spare parts 284 13 00 009 Display updated 07.10 valid to SN: acc. to drawing 30-34-00-803 Pos. Article Name of item price-stage 19-17-05-016-509 display complete 19-17-05-016-505 display complete in change 19-17-05-236-009 sliding element 19-17-05-237-009 display casing 19-17-05-238-009 front housing 19-17-05-241-009 case cover back 19-17-05-242-009 logo frame...
  • Page 52 Spare parts 284 13 00 009 Frame updated 07.10 valid to SN: acc. to drawing 30-34-00-804 Pos. Article Name of item price-stage 02-02-03-311-009 frame 01-10-04-007-509 leveling device 01-08-02-310-009 wheel bolt incl. Fixing material 01-12-02-211-009 wheel incl. Fixing material 02-02-03-312-009 additional weight 02-01-03-402-009 cover shim 01-17-01-204-009...
  • Page 53 Spare parts 284 13 00 109 Slider updated 07.10 valid to SN: acc. to drawing 30-19-17-252 Pos. Article Name of item price-stage 19-17-02-022-505 slider complete in change 19-17-02-022 509 slider complete 19-17-02-027-509 slider frontcover 19-17-02-269-009 jacket backside right 19-17-02-286-009 brake button 19-17-02-288-009 block pad 01-07-05-304-009...
  • Page 54 Spare parts 284 13 00 109 Display updated 07.10 valid to SN: acc. to drawing 30-34-00-803 Pos. Article Name of item price-stage 19-17-05-016-509 display complete 19-17-05-016-505 display complete in change 19-17-05-236-009 sliding element 19-17-05-237-009 display casing 19-17-05-238-009 front housing 19-17-05-241-009 case cover back 19-17-05-242-009 logo frame...
  • Page 55 Spare parts 284 13 00 109 Frame updated 07.10 valid to SN: acc. to drawing 30-34-00-804 Pos. Article Name of item price-stage 02-02-03-311-009 frame 01-10-04-007-509 leveling device 01-08-02-310-009 wheel bolt incl. Fixing material 01-12-02-211-009 wheel incl. Fixing material 02-02-03-312-009 additional weight 02-01-03-402-009 cover shim 01-17-01-204-009...
  • Page 56 Spare parts 285 70 00 009 Slider updated 07.10 valid to SN: acc. to drawing 30-19-17-252 Pos. Article Name of item price-stage 19-17-02-022-505 slider complete in change 19-17-02-022 509 slider complete 19-17-02-027-509 slider frontcover 19-17-02-269-009 jacket backside right 19-17-02-286-009 brake button 19-17-02-288-009 block pad 01-07-05-304-009...
  • Page 57 Spare parts 285 70 00 009 Display updated 07.10 valid to SN: acc. to drawing 30-34-00-803 Pos. Article Name of item price-stage 19-17-05-015-509 display complete 19-17-05-015-505 display complete in change 19-17-05-236-009 sliding element 19-17-05-237-009 display casing 19-17-05-238-009 front housing 19-17-05-241-009 case cover back 19-17-05-242-009 logo frame...
  • Page 58 Spare parts 285 70 00 009 Frame updated 07.10 valid to SN: acc. to drawing 30-34-00-804 Pos. Article Name of item price-stage 02-02-03-311-009 frame 01-10-04-007-509 leveling device 01-08-02-310-009 wheel bolt incl. Fixing material 01-12-02-211-009 wheel incl. Fixing material 02-02-03-312-009 additional weight 02-01-03-402-009 cover shim 01-17-01-204-009...
  • Page 59 Spare parts 285 70 00 099 Slider updated 07.10 valid to SN: acc. to drawing 30-19-17-252 Pos. Article Name of item price-stage 19-17-02-022-505 slider complete in change 19-17-02-022 509 slider complete 19-17-02-027-509 slider frontcover 19-17-02-269-009 jacket backside right 19-17-02-286-009 brake button 19-17-02-288-009 block pad 01-07-05-304-009...
  • Page 60 Spare parts 285 70 00 099 Display updated 07.10 valid to SN: acc. to drawing 30-34-00-803 Pos. Article Name of item price-stage 19-17-05-015-509 display complete 19-17-05-015-505 display complete in change 19-17-05-236-009 sliding element 19-17-05-237-009 display casing 19-17-05-238-009 front housing 19-17-05-241-009 case cover back 19-17-05-242-009 logo frame...
  • Page 61 Spare parts 285 70 00 099 Frame updated 07.10 valid to SN: acc. to drawing 30-34-00-804 Pos. Article Name of item price-stage 02-02-03-311-009 frame 01-10-04-007-509 leveling device 01-08-02-310-009 wheel bolt incl. Fixing material 01-12-02-211-009 wheel incl. Fixing material 02-02-03-312-009 additional weight 02-01-03-402-009 cover shim 01-17-01-204-009...
  • Page 62 Spare parts 285 70 00 159 Slider updated 07.10 valid to SN: acc. to drawing 30-19-17-252 Pos. Article Name of item price-stage 19-17-02-022-605 slider complete in change CN 19-17-02-022 602 slider complete CN 19-17-02-027-509 slider frontcover 19-17-02-269-009 jacket backside right 19-17-02-286-009 brake button 19-17-02-288-009...
  • Page 63 Spare parts 285 70 00 159 Display updated 07.10 valid to SN: acc. to drawing 30-34-00-803 Pos. Article Name of item price-stage 19-17-05-015-603 display complete CN 19-17-05-015-605 display complete in change CN 19-17-05-236-009 sliding element 19-17-05-237-009 display casing 19-17-05-238-009 front housing 19-17-05-241-009 case cover back 19-17-05-242-009...
  • Page 64 Spare parts 285 70 00 159 Frame updated 07.10 valid to SN: acc. to drawing 30-34-00-804 Pos. Article Name of item price-stage 02-02-03-311-009 frame 01-10-04-007-509 leveling device 01-08-02-310-009 wheel bolt incl. Fixing material 01-12-02-211-009 wheel incl. Fixing material 02-02-03-312-009 additional weight 02-01-03-402-009 cover shim 01-17-01-204-009...
  • Page 65 Spare parts 285 70 00 199 Slider updated 07.10 valid to SN: acc. to drawing 30-19-17-252 Pos. Article Name of item price-stage 19-17-02-022-505 slider complete in change 19-17-02-022 509 slider complete 19-17-02-027-509 slider frontcover 19-17-02-269-009 jacket backside right 19-17-02-286-009 brake button 19-17-02-288-009 block pad 01-07-05-304-009...
  • Page 66 Spare parts 285 70 00 199 Display updated 07.10 valid to SN: acc. to drawing 30-34-00-803 Pos. Article Name of item price-stage 19-17-05-015-509 display complete 19-17-05-015-505 display complete in change 19-17-05-236-009 sliding element 19-17-05-237-009 display casing 19-17-05-238-009 front housing 19-17-05-241-009 case cover back 19-17-05-242-009 logo frame...
  • Page 67 Spare parts 285 70 00 199 Frame updated 07.10 valid to SN: acc. to drawing 30-34-00-804 Pos. Article Name of item price-stage 02-02-03-311-009 frame 01-10-04-007-509 leveling device 01-08-02-310-009 wheel bolt incl. Fixing material 01-12-02-211-009 wheel incl. Fixing material 02-02-03-312-009 additional weight 02-01-03-402-009 cover shim 01-17-01-204-009...
  • Page 68 Spare parts 285 70 00 249 Slider updated 07.10 valid to SN: acc. to drawing 30-19-17-252 Pos. Article Name of item price-stage 19-17-02-022-604 slider complete in change JP 19-17-02-022 603 slider complete JP 19-17-02-027-509 slider frontcover 19-17-02-269-009 jacket backside right 19-17-02-286-009 brake button 19-17-02-288-009...
  • Page 69 Spare parts 285 70 00 249 Display updated 07.10 valid to SN: acc. to drawing 30-34-00-803 Pos. Article Name of item price-stage 19-17-05-015-602 display complete JP 19-17-05-015-604 display complete in change JP 19-17-05-236-009 sliding element 19-17-05-237-009 display casing 19-17-05-238-009 front housing 19-17-05-241-009 case cover back 19-17-05-242-009...
  • Page 70 Spare parts 285 70 00 249 Frame updated 07.10 valid to SN: acc. to drawing 30-34-00-804 Pos. Article Name of item price-stage 02-02-03-311-009 frame 01-10-04-007-509 leveling device 01-08-02-310-009 wheel bolt incl. Fixing material 01-12-02-211-009 wheel incl. Fixing material 02-02-03-312-009 additional weight 02-01-03-402-009 cover shim 01-17-01-204-009...

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