Seca 374 Service Manual

for seca
374 / 375 / 376 CN
Service Manual
3741321009
3741321369
3757021009
3767021004
3767021009
3767021094
3767021099
3767021159
3767021249
electronic babyscale multi load cell design, DMS low end module, LCD, for battery
use, prepared for mains operation.
Valid as of: 01.03.2008
Variants:
Operation mod. 374 17-10-06-301 a
Content:
Operation mod. 375/376 17-10-07-496 c
Operation mod. 376 Japan 17-10-07-513 c
Description DMS module 30-34-00-645 b
Description of faults 30-34-00-588 c
Function diagram 25-01-02-560 a
Calibration (lin.) 30-34-00-603
PC configuration program 30-34-00-672 b
Replacement 30-34-00-726
Spare parts 30-34-00-727 b
Description:
Service Manual Number:
17-05-01-329-b
Manual number: 17-05-01-329-b

Seca 374 Specifications

General

Brand	Seca
Model	374
Category	Scales
Language	English

Summary

Description of the electronics

Brief description of the DMS module

Weight measurement

Power supply

Programming

Fault handling

Lists common fault messages, their codes, and troubleshooting steps for scale malfunctions.

Recalibration

Details the process for recalibrating the scale to compensate for linear measuring errors.

Calibration

Explains the calibration process, requirements for test loads, and temperature compensation.

Description of faults

Scales cannot be started

Troubleshoots issues when the scale fails to power on, checking battery and connections.

Scales show no weight or an incorrect weight (repeatedly)

Addresses problems with inaccurate or missing weight readings, checking safeguards and sensors.

Scale shows only the segment test or readings vary too much

Malfunction during weighing procedure

Covers specific error codes (Er:x:10) related to sensor defects or connection problems.

Sensor errors and voltage issues

Details error codes (Er:x:11, Er:x:12, Er:x:14, Er:x:15, Er:x:21, Er:x:22) related to sensors, loads, and voltage.

Bus and memory errors

Description of the calibration mode

Calibration counter

Recalibrating the scales

Details the step-by-step process for switching scales to calibration mode and recalibrating.

Calibration notes and example

Recalibration sequence summary

PC configuration program

Connecting and calibrating a scale

Replacement instructions

Removing the power supply

Electronic module replacement

Guides on how to replace the electronic module (EM), including desoldering connections.

Load cell replacement

Mains connection replacement