Seca 959 Service Manual

for seca 674, 675 NEC2
Service Manual
6741321108
6741321378
6757021008
6757021198
6757021228
6757021248
6757021288
Electronic platform scales with high load-bearing capacity and castors for transport
Valid as of: 01.02.2013
Variants:
Contents:
Description:
Service Manual Number
17-05-01-374-
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
www.seca.com.
Service description electronic 30-34-00-812 c
Cableplan
08-02-06-058 a
Replacement
30-34-00-859
Spare parts
674 1321108
Spare parts
674 1321378
Spare parts
675 7021008
Spare parts
675 7021198
Spare parts 675 7021228
Spare parts
675 7021248
Spare parts 675 7021288
Spare parts drawing Frame 30-34-00-840
Spare parts drawing display
30-34-00-846
EMC Recommendation
30-34-00-519
Instruction manual 656
Instruction manual 657
17-10-06-383
17-10-07-608
Manual number: 17-05-01-374-

Seca 959 Specifications

General

Brand	Seca
Model	959
Category	Scales
Language	English

Summary

1 General Information

1.2 Design and Function of the Scale Part

2 Maintenance

2.1 Adjustment of Scales

Procedures for adjusting scale calibration.

2.1.2 Calibration Counter / Number of Adjustments

2.1.3 Adjustment Mode and Displaying the Calibration Counter Contents

How to access adjustment mode and view the counter.

2.1.5 Placing Adjustment Weights on the Scale

Procedure for placing test weights during adjustment.

2.1.6 Example: Adjusting a Scale with 100g Graduations

Example of scale adjustment with 100g graduations.

2.1.7 Example: Adjusting a Baby Scale with 10g Graduations

Example of baby scale adjustment with 10g graduations.

2.2 Adjusting the Head Slider

How to adjust the head slider.

2.3 Setting the Gravity Factor

Procedure for setting the gravity factor.

2.3.1 Example for Gravity Factor Setting

2.3.2 Summary of a Typical Gravity Factor Setting Sequence

3 Errors

3.1 Error Symptoms for Scale

Common error symptoms for scales and their causes.

3.2 Error Symptoms for Head Slider

3.3 Radio Error Symptoms

3.4 Scale Error Messages

Specific error messages displayed by the scale.

3.5 Head Slider Error Messages

3.6 Radio Error Message

4 Measurements

4.1 Supply Voltage

4.2 Load Cell

Methods for testing load cells.

4.2.1 Measurement Using a Multimeter

Using a multimeter to test load cells.

5 Software intended Purpose

5.1 Installation and Start

5.2 Updating the Radio Module Software

Procedure for updating radio module software.

5.3 Set-up Process

5.5 Technical Requirements for Updating

5.6 Updating the Wireless Printer Software

5.8 Problems with Updating

Replacement

I Safety measures

Precautions before starting any work on the scale.

II Safety instructions against electrostatic charging (ESD protection measures)

Guidelines for safe handling of electronic components.

1 Baseframe

1.1 Replacing the NEC2 weight module

Steps to remove and install the NEC2 weight module.

1.2 Replacing the load cells

Steps to remove and install the load cells.

1.3 Setting the overload protection devices

2 Display

2.1 Removing the display

Steps to remove the scale's display unit.

2.2 Replacing the membrane keypad / NEC 2 display

Steps to replace the membrane keypad or NEC2 display.