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KERN 440...N User Manual

KERN 440...N
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KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Tel: +49-[0]7433-9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
GB
Service Manual
Electronic Precision Balances
Page 2
KERN 440…N
KERN 440…A
Version 4.0 4/2008
440…N-SH-e-0840
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KERN 440...N Specifications

General IconGeneral
CategoryScales
Net weight1.2 kg
Power supply/adapter includedYes
Readability [d]0.001 g
Minimum piece weight at piece counting (Laboratory)0, 01 g
Weighing plate dimensionsØ 80 mm
Power supplyMains adapter
Charging time12 hours

Summary

Key Features of the Balances

External Calibration Procedure

Internal Calibration and Linearity Adjustment

Reading Internal Counts

Explains how to read and interpret the internal counts for linearity adjustment.

LCD Display Segment Test

Functional Block Diagram and Description

Functional Block Diagram

Visual representation of the scale's electronic components and their interconnections.

Function Description

Detailed explanation of the purpose and operation of each functional block.

Troubleshooting Common Issues

Troubleshooting Full Segments Display

Steps to resolve issues when all LCD segments are not displayed correctly.

Troubleshooting Display Zero Issues

Steps to resolve problems with zero readings or the display showing zero.

Troubleshooting Unstable Readouts

Steps to address unstable or incorrect weight readings on the display.

Troubleshooting Inaccurate Readings

Steps to resolve inaccurate measurements or capacity issues with the scale.

Troubleshooting Data Transmission

Steps for resolving problems with data communication to external devices.

Replacing the Printed Circuit Board (PCB)

Replacing the Load Cell Assembly

Schematics

Components Layout

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