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Seca 664 Service Manual

Seca 664
32 pages
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Service Manual
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Electronic wheelchair scale, collabsible, vertical stand up and easily
manoeuvrable. Pre tara function with three adjustable values with chipcardreader.
Turnable display and operating housing.
Valid as of: 01.03.2011
Variants:
Content:
Description chipcard module 30-34-00-685
Description NEC I Elektronik 30-34-00-779
Description of faults 30-34-00-588 d
Function diagram 25-02-02-209 a
Calibration 30-34-00-603
PC configuration program 30-34-00-672 b
Cable plan 08-02-06-022 c
Description:
Service Manual Number
17-05-01-292-L
Cable plan chipcardreader
Replacement
Spare parts
08-02-06-025
30-34-00-673 d
30-34-00-669 k
Manual number: 17-05-01-292-L

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Questions and Answers:

Seca 664 Specifications

General IconGeneral
BrandSeca
Model664
CategoryScales
LanguageEnglish

Summary

Brief Description of the Chip Card Module

Introduction to Chip Card Module

Overview of the chip card module's function and integration with other components.

Chip Card Contact Details

Details the physical card contacts, insertion cycles, and memory card compatibility.

Module Power Supply

Explains the 3V supply voltage provided via the SeSAM bus to the module.

SeSAM Bus Communication

Describes the bus connection for module communication, data exchange, and power.

Signal Transmitter Function

Covers the optional signal transmitter and its use with a piezo diaphragm.

Reset Circuit Operation

Explains the reset mechanism for the microcontroller upon power-up or button press.

Fault Handling Procedures

Details fault reporting with codes, module type, and display suppression.

Time Base Derivation

Describes the derivation of the time base for timed processes from the quartz.

Data Storage on Chip Card

Explains storage of scale settings, user info, and measured values on the chip card.

Chip Card Functions

Outlines how chip card functionality is programmed and affects scale operation.

Chip Card Technical Data

Lists key specifications like supply voltage, current, operating temperature, and dimensions.

Description of Faults

Scale Does Not Start

Lists possible causes and remedies for the scale failing to power on.

Incorrect Weight Readings

Details causes and solutions for inaccurate weight readings or fluctuations.

Display and Keypad Issues

Describes potential causes for incomplete display information or unresponsive keypads.

Weighing Operation Faults

Covers errors like Er:X:10, Er:X:11, Er:X:12 during weighing.

Calculation and Calibration Faults

Addresses faults in kg value calculation, recalibration, and battery voltage measurement.

Measurement and Transmission Faults

Covers temperature errors, data transmission interruptions, and buffer overflows.

Module and EEPROM Faults

Details issues with too many modules, missing EEPROM data, and access errors.

Software and Menu Faults

Explains errors due to incorrect software checksum and menu operation issues.

Function Diagram

Block Diagram Overview

Visual representation of the scale's electronic modules and data flow.

Description of the Calibration Mode

General Calibration Requirements

Outlines requirements for scale recalibration without external tools or test weights.

Calibration Counter Function

Explains the calibration counter and its role in tracking recalibration procedures.

Entering Calibration Mode

Step-by-step guide on how to switch scales to calibration mode.

Adjusting Weight Values

Details the process of adjusting weight values using increment/decrement keys.

Calibration Mode Timeout

Notes on the timeout function to prevent improper calibration.

Recalibration Procedure Example

Provides a practical example of a typical recalibration sequence.

Recalibration Sequence Summary

A table summarizing user actions and expected results during recalibration.

PC Configuration Program

PC-Based Configuration Instructions

Guides on using PC-based configuration for diagnosis and recalibration.

Required Equipment for Configuration

Lists necessary hardware and software for PC configuration.

Software Installation Guide

Instructions for unpacking and installing the 'SERVA' software.

Connecting Scale to PC

Steps for connecting the scale to the PC and initiating configuration.

Display Module Connection Options

Details how to connect different display modules for PC configuration.

Starting Configuration and Help

Steps to start the scale, 'SERVA' software, and access help.

Cable Plan Base Frame

Base Frame Wiring Diagram

Illustrates the wiring and connections for the base frame components.

Cable Plan Chipcard Reader

Chipcard Reader Module Wiring Diagram

Shows the cable connections for the chipcard reader and expanded display modules.

Replacement Instructions

Power Supply and ESD Precautions

Safety precautions and steps for removing the power supply unit.

Column Disassembly Steps

Detailed steps for disassembling the scale's column assembly.

Joint and Locking Unit Dismantling

Instructions for taking apart the joint and locking mechanism.

Display Housing Removal

Steps to remove the main display housing unit.

Display Housing Dismantling

Detailed guide for dismantling the display housing itself.

Removing Display Housing Joint Connection

Specific steps to detach the joint connection from the display housing.

Frame Removal and Dismantling

Instructions for removing and disassembling the scale's frame.

Electronics and Battery Pack Housing Removal

Steps to remove the housing containing electronics and battery.

Mains Socket and Bubble Level Holder Removal

Guide to removing the holder for the mains socket and bubble level.

Defective Bubble Level Replacement

Instructions on safely removing a faulty bubble level.

Load Cell Removal

Steps for removing a load cell from the scale.

Adjusting Feet Removal

Instructions on how to remove the scale's adjustable feet.

Platform Dismantling Procedures

Procedures for dismantling the main platform assembly.

Castors and Left-Hand Rail Removal

Steps to remove castors and the left rail.

Right-Hand Rail Removal

Steps to remove the right rail.

Platform Reinforcing Plate Removal

Instructions for removing the platform reinforcing plate.

Hinged Ramp Removal

Steps to remove the hinged ramp assembly.

Ramp Stop Removal

Guide to removing the ramp stop component.

Platform Insert Removal

Instructions for removing the platform insert.

Rubber Elements Removal

Steps to remove rubber elements and washers.

Mat and Screw Removal

Instructions for removing the platform mat and associated screws.

Assembly Guide

General guidance for reassembling the scale components.

Fitting a New Load Cell

Steps and requirements for fitting a new load cell.

Electronics and Battery Housing Reassembly

Specific instructions for the housing of electronics and battery.

Display Housing Insertion

Guidance on inserting the display unit into the column tube.

Display Housing Assembly Steps

Steps for correctly assembling the display housing unit.

Joint and Locking Unit Adjustment

Procedures for adjusting and securing the joint and locking unit.

Spare Parts List

Base Frame Spare Parts

Lists spare parts for the base frame assembly.

Column Spare Parts

Lists spare parts specifically for the scale's column.

Display Unit Spare Parts

Lists spare parts related to the scale's display unit.

Base Frame Components Diagram

Illustrates the location of various parts on the base frame.

Upper Frame and Column Components Diagram

Shows the layout of parts on the upper frame and column.

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