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CX30TK

Avery Berkel CX30, CX20, CX20W, CX9/A702, CX30TK Service Manual

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CX20, CX30 AND CX34 SERIES RETAIL SCALES
CX30 TK
CX34
CX9/A702
CX20W
CX30
76101–452 Issue 2/02.03.95
CX20
Contents
Table of Contents:
About This Manual Amendment Sheet Abbreviations Overview
1 Introduction 1–1
1.1 General 1–3
1.1.1 CX20 1–4
1.1.2 CX20 W 1–5
1.1.3 CX30 1–5
1.1.4 CX30 TK 1–6
1.1.5 CX34 1–6
1.2 General Data 1–7 2 General and Technical 2–1
2.1 Mechanical Description 2–3
2.1.1 CX20/CX30 2–3
2.1.2 CX20 W and CX9/A702 2–7
2.1.3 CX34 2–11
2.2 Electrical Description 2–13
2.3 Networking 2–14
2.4 Built–in Test Equipment 2–14
i
Contents
3 Disassembly and Assembly 3–1
3.1 Introduction 3–3
3.2 Servicing the CX20/CX30 3–3
3.2.1 Removing the case 3–3
3.2.2 Fitting the case 3–4
3.2.3 Replacing the keyswitch 3–4
3.2.4 Replacing the DCU/remote keyboard connector 3–4
3.2.5 Replacing the LCD (CX20) 3–5
3.2.6 Removing external connector plate 3–6
3.3 Servicing the CX20 W and CX9/A702 3–8
3.3.1 Removing the case (CX20 W) 3–8
3.3.2 Fitting the case (CX20 W) 3–9
3.3.3 Replacing the keyswitch (CX20 W) 3–9
3.3.4 Replacing the DCU/remote keyboard connector (CX20 W) 3–9
3.3.5 Replacing the LCD (CX20 W) 3–10
3.3.6 Removing external connector plate (CX20 W) 3–10
3.4 Servicing the CX34 3–12
3.4.1 Removing the housings 3–12
3.4.2 Fitting the housings 3–13
4 Installation (CX20 W) 4–1
4.1 Introduction 4–3
4.2 Installation 4–3
4.2.1 Approvals and stamping 4–4
5 Setting Up Procedures 5–1
5.1 Introduction 5–4
5.2 Service mode 5–5
5.2.1 Entering service mode using the SAC number 5–5
5.2.2 Entering service mode using the DIL switch 5–7
5.3 Configuration (Menu Option) 5–7
5.4 Calibration (Menu Option) 5–7
5.5 Clear Memory (Menu Option) 5–8
5.6 Format Memory (Menu Option) 5–9
5.7 Test Weight (Menu Option) 5–10
5.8 Test Diagnostics (Menu Option) 5–10
5.9 SAC Number (Menu Option) 5–11
5.10 Print Density (Menu Option) 5–12
5.11 Label Formats (Menu Option) 5–13 6 Configuration 6–1
6.1 Introduction 6–3
6.2 Configuration procedure 6–3
6.2.1 Configuring the machine 6–3
6.2.2 Configuration Option Tables 6–5
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CX20/CX30/CX34 Service Manual
Contents
7 Calibration and Adjustments 7–1
7.1 Introduction 7–3
7.2 Adjustment of Overload Stops (CX20/CX30) 7–3
7.2.1 Adjustment of Asymmetric Overload Stops 7–3
7.3 Adjustment of Overload Stops (CX9/A702) 7–3
7.4 Adjustment of Overload Stops (CX34) 7–3
7.5 Calibration 7–4 8 Testing 8–1
8.1 Introduction 8–3
8.2 Date/time Entry (Menu Option) 8–4
8.3 Scale Test (Menu Option) 8–5
8.3.1 Processor test (menu option) 8–6
8.3.2 Static RAM test (menu option) 8–7
8.3.3 ROM test (menu option) 8–8
8.3.4 EEPROM test (menu option) 8–9
8.3.5 Display test (menu option) 8–10
8.3.6 Keyboard test (menu option) 8–11
8.3.7 Comms test (menu option) 8–13
8.3.8 Weighing test (menu option) 8–15
8.4 System Load Test (Menu Option) 8–16
8.4.1 Loading the system 8–16
8.4.2 Measuring on the machine 8–18
9 Label Formats 9–1
9.1 Introduction 9–3
9.2 Labels 9–4
9.2.1 Label format 9–4
9.2.2 Label fields 9–5
9.2.3 Label field co–ordinates 9–6
9.2.4 Label start point 9–7
9.2.5 The offset (90 and 180 degree formats only) 9–8
9.2.6 Determining the Start Point of a 90 Degree Format 9–9
9.2.7 Determining the Start Point of a 180 Degree Format 9–10
9.2.8 Text fonts 9–11
9.2.9 References 9–11
9.3 Creating a New Label Format 9–12
9.3.1 Design 9–12
9.3.2 Determining the label field co–ordinates 9–13
9.3.3 Programming 9–13
9.3.4 Example – creating a new 0 degree label format 9–14
9.4 Edit Format (Menu Option) 9–20
9.5 Clear Format (Menu Option) 9–25
9.6 Copy Format (Menu Option) 9–26
9.7 Print Format (Menu Option) 9–27
CX20/CX30/CX34 Service Manual
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Contents
10 Error Messages 10–1
10.1 Commodity Display Error Messages 10–3
10.2 TEST REPORT Error Number 10–13 11 Main PCB 11–1
11.1 Description 11–3
11.2 Servicing 11–6
11.2.1 Removing the main PCB (CX20/CX30) 11–6
11.2.2 Fitting the main PCB (CX20/CX30) 11–6
11.2.3 Removing the main PCB (CX20 W) 11–10
11.2.4 Fitting the main PCB (CX20 W) 11–10
11.2.5 Removing the main PCB (CX34) 11–11
11.2.6 Fitting the main PCB (CX34) 11–11
11.2.7 Replacing the main PCB 11–14
12 Display (CX20) 12–1
12.1 Description 12–3
12.2 Testing 12–4
12.3 Servicing 12–5
12.3.1 Removing an integral display PCB 12–5
12.3.2 Fitting an integral display PCB 12–5
12.3.3 Removing a tower mounted display PCB 12–6
12.3.4 Fitting a tower mounted display PCB 12–6
13 Display (CX30/CX34) 13–1
13.1 Description 13–3
13.2 Testing 13–5
13.3 Configuration Data 13–5
13.4 Servicing 13–10
13.4.1 Removing a display PCB (CX30) 13–10
13.4.2 Fitting a display PCB (CX30) 13–10
13.4.3 Removing a display assembly (CX30) 13–11
13.4.4 Fitting a display assembly (CX30) 13–12
13.4.5 Removing a display PCB (CX34) 13–12
13.4.6 Fitting a display PCB (CX34) 13–13
14 Keyboard 14–1
14.1 Description 14–3
14.2 Testing 14–4
14.3 Servicing 14–4
14.3.1 Removing a keyboard (CX20/CX30) 14–4
14.3.2 Fitting a keyboard (CX20/CX30) 14–5
14.3.3 Removing a keyboard (CX34) 14–5
14.3.4 Fitting a keyboard (CX34) 14–6
15 CX30 TK Machine 15–1
15.1 General 15–3
15.2 Mechanical Description 15–3
15.3 Electrical Description 15–4
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15.4 Keyboard Controller PCB 15–4
15.4.1 Circuit description 15–4
15.4.2 Power Supplies 15–4
15.4.3 Links 15–5
15.5 Servicing 15–8
15.5.1 Removing the customer keyboard 15–8
15.5.2 Replacing the customer keyboard 15–8
15.5.3 Removing the keyboard controller PCB 15–8
15.5.4 Fitting the keyboard controller PCB 15–9
15.5.5 Removing the keyboard assembly 15–9
15.5.6 Fitting the keyboard assembly 15–9
15.5.7 Removing the switch PCB loom 15–10
15.5.8 Fitting the switch PCB loom 15–10
16 Power Supply Unit 16–1
16.1 Description 16–3
16.2 Servicing 16–4
16.2.1 Gaining access to the power supply unit (CX20/CX30) 16–5
16.2.2 Gaining access to the power supply unit (CX34) 16–6
16.2.3 Replacing a fuse 16–7
17 Transducer 17–1
17.1 Description 17–3
17.1.1 Transducer Assembly CX20/CX30 17–3
17.1.2 Transducer Assembly CX34 17–4
17.1.3 Suspension Assembly CX34 17–4
17.2 Testing 17–6
17.3 A/D PCB 17–6
17.4 Servicing 17–7
17.4.1 Removing the transducer (CX20/CX30) 17–7
17.4.2 Fitting the transducer (CX20/CX30) 17–7
17.4.3 Removing the transducer (CX34) 17–7
17.4.4 Fitting the transducer (CX34) 17–8
18 CX9/A702 Remote Weighing Platform 18–1
18.1 Description 18–3
18.2 Specifications 18–5
18.3 Servicing 18–5
18.3.1 Special Tool (15221) 18–5
18.3.2 Removing a transducer 18–5
18.3.3 Fitting the transducer 18–6
18.3.4 Using the C117 Special Tool 18–8
19 Receipt Printer 19–1
19.1 Description 19–3
19.2 Test and Adjustment 19–4
19.3 Servicing 19–4
19.3.1 Removing the printer (CX20/CX30) 19–4
19.3.2 Fitting the printer (CX20/CX30) 19–5
19.3.3 Removing the printer (CX34) 19–5
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Contents
19.3.4 Fitting the printer (CX34) 19–6
19.3.5 Cleaning the print head 19–6
19.3.6 Changing the print head 19–6
19.3.7 Changing the microswitch 19–7
19.3.8 Disassembling the printer 19–7
19.3.9 Assembling the printer 19–7
20 Label and Receipt Printer 20–1
20.1 Description 20–3
20.2 Test and Adjustment 20–5
20.3 Servicing 20–6
20.3.1 Removing the printer (CX20/CX30) 20–6
20.3.2 Fitting the printer (CX20/CX30) 20–6
20.3.3 Removing the printer (CX34) 20–7
20.3.4 Fitting the printer (CX34) 20–7
20.3.5 Cleaning the print head 20–7
20.3.6 Changing the take–up motor 20–7
20.3.7 Changing the stepper motor 20–8
20.3.8 Changing the friction roller 20–8
20.3.9 Changing the print head 20–9
20.3.10 Changing the photodetector 20–10
20.3.11 Changing the printer mechanism 20–10
21 Networking 21–1
21.1 Networking 21–3
21.1.1 Network cabling 21–4
22 Communications Controller 22–1
22.1 Description 22–3
22.1.1 C918 external comms controller unit 22–4
22.2 Network Connections 22–4
22.2.1 Dual comms controller operation 22–5
22.3 Comms PCB – Main Components 22–6
22.4 Servicing 22–10
22.4.1 C918 external comms controller unit 22–10
23 RS232 Interface PCB (CX20 W) 23–1
23.1 General 23–3
23.2 Circuit Description 23–4
23.2.1 RS232 interface 23–4
23.2.2 Wrapper control signal interface 23–4
23.2.3 Wrapper ready signal (control interface version 2 only) 23–4
23.2.4 Scale in control signal (control interface version 2 only) 23–5
23.2.5 Analogue interface 23–5
23.2.6 ”Wrapper Start” relay control 23–5
23.2.7 Label taken detection 23–5
23.2.8 ULMA 200 series wrapper protocol 23–6
23.2.9 Serial interface devices 23–6
23.3 Servicing 23–7
23.3.1 Replacing the RS232 interface PCB 23–7
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CX20/CX30/CX34 Service Manual
Contents
24 Wiring Interconnections 24–1
24.1 CX20/CX30 24–3
24.2 CX20 W 24–8 25 Appendices 25–1
25.1 Configuration Option Tables for Old Software 25–3
25.1.1 Option Tables for Mod.3 Software Release 25–3
25.1.2 Option Tables for Pre–Phase 1.2 Software Release 25–7
25.2 Label Formatting 25–17
25.2.1 Calculating the offset 25–17
25.2.2 Field data tables 25–18
Parts List
List of Figures
Figure 1.1 General View (Integral Displays) 1–4 Figure 1.2 General View (Column–mounted Displays) 1–4 Figure 1.3 General View (CX20 W) 1–5 Figure 1.4 General View (CX30) 1–5 Figure 2.1 Exploded View (CX20) – R Version 2–3 Figure 2.2 Exploded View (CX30) – LS/ECR Version 2–4 Figure 2.3 Scale Base – Plan View (CX20/CX30) 2–6 Figure 2.4 ULMA Wrapping Machines 2–7 Figure 2.5 Exploded View (CX20 W) 2–8 Figure 2.6 Exploded View (CX9/A702) 2–9 Figure 2.7 Scale Base – Plan View (CX20 W) 2–10 Figure 2.8 Exploded View (CX34) 2–11 Figure 3.1 Unit Interior (CX20) – View on Front, Right Corner 3–5 Figure 3.2 External Connector Plate – View from above 3–7 Figure 3.3 External Connector Plate (CX20 W) – View from above 3–11 Figure 5.1 Service Mode Flowchart 5–3 Figure 5.2 Menu in Service Mode 5–4 Figure 8.1 Menu of Test Diagnostics (Service Mode) 8–3 Figure 8.2 Menu of Scale Test 8–5 Figure 8.3 Link Fittings to Echo Plugs (D–type Connectors) 8–13 Figure 9.1 Label Formats Menu 9–3 Figure 9.2 Sample Label and Label Fields – 0 Degree Format 9–5 Figure 9.3 Label Start Points (0, 90 and 180 Degree Labels) 9–7 Figure 9.4 Effect of the Offset (90 Degree Label) 9–8 Figure 9.5 Determining the Start Point (90 Degree Format) 9–9 Figure 9.6 Determining the Start Point (180 Degree Format) 9–10 Figure 9.7 Example of Completed Field Measurements Table 9–18 Figure 9.8 Example of Completed Programmed Data Table 9–19 Figure 9.9 Co–ordinates (Commodity Display) 9–20 Figure 11.1 Main PCB – Electrical Connections 11–4 Figure 11.2 Main PCB – DIL Switches and Potentiometers 11–8 Figure 11.3 Main PCB – Location of Links 11–12 Figure 11.4 Main PCB – Location of Integrated Circuits 11–15 Figure 12.1 Display – FIP Type (CX20) 12–3
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Contents
Figure 12.2 Display Brackets 12–4 Figure 13.1 Display (CX30) 13–3 Figure 13.2 Display (CX34) 13–4 Figure 13.3 Display PCB (Metric Multi–line) 13–4 Figure 13.4 Display PCB – Switches and LEDs 13–5 Figure 13.5 Display (CX30) – Exploded 13–11 Figure 14.1 Keyboard 14–3 Figure 14.2 Keyboard Earthing Arrangement 14–6 Figure 15.1 Keyboard Controller PCB – Communication Loom Connections 15–5 Figure 15.2 Keyboard Controller PCB – Links 15–6 Figure 15.3 Keyboard Controller PCB – Pin Signals 15–7 Figure 16.1 Power Supply PCB – Component Highlight 16–3 Figure 17.1 Transducer Assembly (CX20/CX30) 17–3 Figure 17.2 Suspension Assembly (CX34) 17–5 Figure 17.3 A/D PCB Connections (component side) 17–6 Figure 18.1 CX9/A702 Remote Weighing Platform 18–3 Figure 18.2 CX9/A702 – Exploded View 18–4 Figure 18.3 Special Tool (15221) 18–5 Figure 18.4 Removing the transducer using the 15221 18–6 Figure 18.5 Fitting the transducer using a 15221 18–7 Figure 18.6 Special Tool (C117) 18–8 Figure 18.7 Using the Special Tool (C117) 18–8 Figure 19.1 Ticket Printer (CX20/CX30) 19–3 Figure 20.1 Label and Receipt Printer (CX20/CX30) 20–3 Figure 21.1 Network Connections 21–3 Figure 21.2 Cable Screen Connection 21–4 Figure 22.1 Network Connections (with Communications Controller) 22–4 Figure 22.2 Comms PCB – Component Highlight 22–6 Figure 22.3 Comms PCB – Links LK1, LK6, LK7 22–8 Figure 22.4 Comms PCB – Switch Settings 22–9 Figure 23.1 RS232 Interface PCB 23–3 Figure 24.1 Connector Pins on Main PCB – PL6, PL8 and PL13 24–3 Figure 24.2 Connector Pins on Main PCB – PL2, PL9, PL12 and PL15 24–4 Figure 24.3 Connector Pins on Main PCB – PL7, PL14, PL17, PL18 and SK1 24–5 Figure 24.4 Connector Pins on Main PCB – PL20, PL19 and PL16 24–6 Figure 24.5 Connector Pins on Main PCB – PL3 24–7 Figure 24.6 PCB Interconnection Diagram (CX20 W) 24–8 Figure 24.7 Connector Pins on RS232 PCB (CX20 W) – PL1, PL2 and PL5 24–9 Figure 24.8 Connector Pins on RS232 PCB (CX20 W) – PL3, PL4, PL7,
PL8, TB1 and TB2 24–10
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CX20/CX30/CX34 Service Manual
About This Manual
This manual has been prepared to assist in after sales service by providing information on the installation, maintenance and repair of the equipment.
It is suggested that the Manual is studied carefully and familiarised, particularly the sections listing major components, test points and adjustment available. The Manual can then be used as a reference book by referring to the detailed contents page to obtain the information required.
The Parts List should also be studied and it is recommended that parts are ordered in advance for stock purposes in order to accommodate future service requirements.
The Manual is not a replacement for training but should be used to supplement training courses, which take place at our Service Training Centre or, alternatively, within the Service Regions and Overseas Territories.
Amendments will be issued as necessary. To ensure that your Manual is up to date the Amendment Record Sheet must be completed as the amendments are made to the Manual.
For further information on Service or Parts, please contact your nearest Avery Berkel dealer or contact Avery Berkel Technical Support:
Avery Berkel Technical Support West Bromwich Road Tame Bridge Walsall West Midlands WS5 4BD
Tel: 0922 434343 Fax: 0922 616806
NOTE:
This manual remains the property of GEC Avery Limited and must be returned to the Company on request or if you should leave the Company’s employment.
Copyright , by GEC Avery Limited – Year: 1995 All Rights Reserved Worldwide. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system or translated into any language or computer language, in any form or by any means electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of Avery Berkel, Sertec House, West Bromwich Road, Tame Bridge, Walsall, West Midlands, WS5 4BD.
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Amendment Sheet
AMENDMENT DATE AMENDMENT DETAILS
1 1992 Draft 1: originated by sub–contractors (Cheltenham
Technical Publications).
2 Sep. 1992 Draft 2: conversion to Interleaf format and general
update.
3 Feb. 1994 Issue 1: general update to incorporate Phase 1.3
software release.
4 Oct. 1994 Figure 20.4 Comms PCB – Switch Settings on Page
20.10: switch settings for ”SW3: back–up controller
selected” reversed – they were incorrect. 5 Mar. 1995 Issue 2: amendments as per A/A 31167. 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
xi
Abbreviations
% Per cent °C Degrees Celsius
A Ampere A/D Analogue to digital ASIC Application specific integrated
circuit
AVR Automatic variable resolution
Comms Communications
DCU Data collector unit DIL Dual–in–line (switch) DMM Digital multimeter DPE Data processing engine
(comms controller PCB)
DVM Digital voltmeter
ECR Electronic cash register EEPROM Electronically, erasible,
programmable, read–only memory
EPROM Erasible, programmable,
read–only memory
FIP Fluorescent indicator panel FS# Circuit code: fuse number #
LK# Circuit code: link number # LS Label (printer) LSB Least significant bit LSD Least significant digit
MC Memory controller MEM Memory MIN Minimum mm Millimetre MSB Most significant bit MSD Most significant digit
NT Net (weight)
OP Operator (mode) oz Ounce
PCB Printed circuit board PL# Circuit code: plug number #
(electrical connector)
PLU Price look up
R Receipt (printer) RAM Random access memory RV# Circuit code: variable
resistance number #
g Gram
Hz Hertz
I/O In/out IC# Circuit code: integrated circuit
number # in Inch ISC Inter–scale communications
kg Kilogram kV Kilovoltage
lb Pound (Imperial weight) LCD Liquid crystal display LED Light emitting diode
SK# Circuit code: socket number # SMPS Switched–mode power supply SSD Static sensitive device SW# Circuit code: switch number #
TP# Circuit code: testing point
number #
V Voltage V# Circuit code: power transistor
number # VA Volt–Ampere Vac Voltage, alternating current Vdc Voltage, direct current
W Watts
CX20/CX30/CX34 Service Manual
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Overview
SAFETY WARNINGS
Lethal Voltages
This equipment is supplied by a mains voltage which can cause electric shock injury. Before removing the unit case or the covers of any remote units (for example: displays, weighing platforms, customer keyboards etc.), disconnect completely the mains power supply and ensure that it cannot be connected inadvertently by other persons.
If the unit case or the covers of any remote units have been removed, do not apply power to the unit unless specifically instructed to do so in these instructions. When working on live equipment, exercise great care, use insulated tools and test equipment, and do not work alone.
The capacitors in the power supply unit will hold a charge for a period of up to six minutes after the power supply is switched off. During this time, do not touch the unit. Do not attempt to discharge the capacitors by shorting their terminals.
The power plug must be inserted in a socket outlet provided with a protective earth contact. The electrical supply at the socket outlet must provide over–current protection of 5 amperes. The socket outlet must be within easy reach for isolation of the machine for cleaning and servicing.
Do not clean the machine or any remote units whilst it is switched on. For cleaning use only a clean cloth moistened with water containing a small amount of domestic detergent.
CX20/CX30/CX34 Service Manual
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Overview
SERVICE PRECAUTIONS
General
Before servicing a machine, it is recommended that the machine’s data is backed–up. Refer to Part 2, Programming Handbook for use on Data Collector Units (DCUs).
Static Sensitive Devices
Almost all electronic integrated circuits, commonly known as ’chips’, are static sensitive devices (SSDs). They will be destroyed if contaminated with static electricity.
When working with SSDs follow anti–static procedures which include:
the wearing of an anti–static wrist braceletmaking sure that the workbench is covered by a static–discharge matavoiding wearing nylon clothesdischarging any anti–static electricity which may be on your person by contacting an
earthed device before handling an SSD.
Keep an SSD in a bag made of an anti–static or conductive material. When shipping an SSD, cover all the SSD contacts with an anti–static or conductive material (not polythene). When shipping an assembly which contains SSDs, pack it securely in an anti–static bag.
Handling Procedures
The transducer in the machine or remote weighing platform is not protected against negative overload. Do not lift the machine or remote weighing platform by the cross assembly or transducer after the covers have been removed.
When the cross assembly, load stop or transducer are disassembled or otherwise removed, handle the transducer with care. Do not exert physical force on it and do not attempt to disassemble its component parts.
The strain pads and wires in the transducer are extremely sensitive. Do not attempt any maintenance within the transducer and ensure that the strain wires are not damaged by tools or other objects during maintenance, storage or shipment.
Main PCB
The main PCB has a battery installed on it to maintain memory data. If you are removing the main PCB from the unit, the battery must be switched off (refer to procedures) to prevent live parts of the PCB being shorted. Before switching off the battery, if possible, the data contained in the machine should be backed–up (refer to Part 2, Programming Handbook for use on the DCU). Although the battery supply is switched off, take great care not to short the battery terminals during maintenance. After fitting a main PCB the battery must be switched on.
Print Head
The thermal print head of the printer will be damaged if scratched with sharp objects (such as a screwdriver or knife blade). When examining or servicing the print head, take care not to damage it. If the print head requires cleaning, use only the cleaning kit specified in these procedures.
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CX20/CX30/CX34 Service Manual
Overview
C918 External Comms Controller Unit
The details for servicing the C918 are detailed in the following documetation:
C918 Service Safety Information, Part Number 76102–129C918 User Safety Information, Part Number 76102–130
Any warnings, cautions or notes must be strictly observed.
ORDERING
New Parts
When ordering a new part, make sure that you use the correct part number. Before fitting, make sure that its part number matches the part number of the part being removed (or is an approved alternative).
PUBLICATION NOTES
User Handbooks
The engineer is advised to carry a copy of the User Handbooks for reference during maintenance. The User Handbooks for each machine are divided into seven Parts: Parts 1 and 7 are machine specific and Parts 2 to 6 are common to each machine. The Parts are:
Handbook Part Number
Part 1 Operators’ Handbook Machine specific Part 2 Programming Handbook Common Part 3 Networks and Operating Modes Common Part 4 Management Totals Common Part 5 Help Information Common Part 6 Label and Barcode Formats Common Part 7 Quick Reference Guide Machine specific
Title of Handbook Machine Specific/Common
Fitting Instuctions – Column Mounted TK Keyboard
See Fitting Instructions for the Column Mounted TK Keyboard Kit, Part Number 76102–188.
Notation
In this publication, where a metric value is quoted, Continental notation is used (comma for decimal separator, space for 000’s separator). Where an Imperial value is quoted, British notation is used (full point for decimal separator, comma for 000’s separator). Where a value is quoted which may be either metric or Imperial (such as a period of time or an electrical value), Continental notation is used.
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Overview
THE CX20, CX30 AND CX34 SERIES OF SCALES
The CX20, CX30 and CX34 series of scales comprise the following machines:
Model Description
CX20 ECR Receipt only counter scale with electronic cash register functions;
integral vendor display with integral or column–mounted customer display
CX20 LS Label and receipt counter scale; integral vendor display with integral
or column–mounted customer display
CX20 LS/ECR Label and receipt counter scale with electronic cash register
functions; integral vendor display with integral or column–mounted customer display
CX20 R Receipt only counter scale; integral vendor display with integral or
column–mounted customer display
CX20 W Label only printing and indicating machine; used in conjunction with
remote weighing platform (modified CX9/A702) on Automatic Stretch Wrapping machines
CX30 ECR Receipt only counter scale with electronic cash register functions;
column–mounted displays CX30 LS Label and receipt counter scale; column–mounted displays CX30 LS/ECR Label and receipt counter scale with electronic cash register
functions; column–mounted displays CX30 R Receipt only counter scale; column–mounted displays CX30 TK The CX30 LS counter scale with column–mounted or remote
customer keyboard (with modifications to the CX30 LS machine on
the column–mounted version) CX34 R Receipt only hanging scale CX34 LS Label and receipt hanging scale CX34 LS/ECR Label and receipt hanging scale with electronic cash register
functions
All references to CX20, unless stated otherwise, apply to all machines in the CX20 range. This rule also applies to the CX30 and CX34 ranges, accordingly.
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CX20/CX30/CX34 Service Manual
Section 1
Introduction
Table of Contents:
1.1 General 1–3
1.1.1 CX20 1–4
1.1.2 CX20 W 1–5
1.1.3 CX30 1–5
1.1.4 CX30 TK 1–6
1.1.5 CX34 1–6
1.2 General Data 1–7
1–1
CX20/CX30/CX34 Service Manual
1.1 General
This manual provides service instructions for weighing scales of the CX20, CX30 and CX34 series.
The units are electronic weighing, price computing and printing machines for retail use. They are mains powered and can be operated as stand–alone units or in a network. The units will interface with facilities such as:
cash drawerdata collector unit (DCU)remote programming keyboardremote operator’s keyboardcustomer self–service keyboardexternal printer
There are four main types of machine: receipt only (R); receipt only with cash register functions (ECR); label and receipt (LS); and label and receipt with cash register functions (LS/ECR). There are also customer self–service keyboard (TK) and wrapping machine (W) versions.
1 — Introduction
Each machine can be programmed to configure the keyboard to suit the goods and prices of the vendor. The keyboard face can be written on using an erasible crayon. An audible tone sounds during keyboard operation and for certain prompts and error messages.
The units, generally, feature a weighplate, keyboard, vendor and customer displays, keyswitch and printer.
The keyboard has two modes of operation, serving customers and programming, each having its own overlay.
The vendor and customer displays are at the front and rear of the machine, respectively. Each comprises a number of display fields and annunciators which provide information such as, weight, price, tare operation, commodity description etc.
A keyswitch allows the selection of four modes of operation. There are three keys used in the keyswitch:
OP key: provides access to OPerator and SUPERVISOR modesX key: same as OP key; also provides access to System X and Machine X
programming menus
Z key: same as X key; also provides access to System Z and Machine Z
programming menus.
There are two types of printer, receipt(R) and label and receipt (LS). Both printers are thermal type printers which print receipts and reports on a thermal paper roll. The label and receipt printer also prints labels on a thermal label roll and utilises a cassette for loading the paper. A number of these cassettes can be retained for use, each loaded with different paper. Both printers can print alpha characters, numeric characters and barcode graphics, when required.
1–3
1 — Introduction
1.1.1 CX20
The CX20 is a counter scale. Supplemental information is presented to the vendor by a separate liquid crystal display (LCD) which is just below the printer. Column–mounted displays are available as an alternative.
Figure 1.1 General View (Integral Displays)
Weighplate
Customer display
Adjustable foot (4)
On/Off switch (below edge)
Rating plate
Figure 1.2 General View (Column–mounted Displays)
Customer display
Spirit level
Vendor display
Ticket mouth
LCD
DCU/external keyboard controller
Keyswitch
Keyboard
Stamping plate
Vendor display
Weighplate
Adjustable foot (4)
On/Off switch (below edge)
Rating plate
Spirit level
Columns
Blank screen
Ticket mouth
DCU/external keyboard controller
Keyswitch
Keyboard
Stamping plate
1–4
1 — Introduction
1.1.2 CX20 W
The CX20 W is an indicating and printing machine. It is used with a remote weighing platform, a modified CX9/A702, on a range of Automatic Stretch Wrapping machines. The CX20 W has no weighplate or customer display.
Figure 1.3 General View (CX20 W)
Adjustable foot (4)
On/Off switch (below edge)
Rating plate
1.1.3 CX30
The CX30 is a counter scale with a head–up display arrangement mounted on top of twin columns at the rear of the machine.
Figure 1.4 General View (CX30)
Vendor display
Label taken sensor
Ticket mouth
LCD
DCU/external keyboard controller
Keyswitch
Keyboard
Stamping plate
Customer display
Weighplate
Adjustable foot (4)
On/Off switch (below edge)
Rating plate
Spirit level
Stamping plate
Vendor display
Ticket mouth
DCU/external keyboard connector
Keyswitch
Keyboard
1–5
1 — Introduction
1.1.4 CX30 TK
The CX30 TK is a customer self–service, counter scale. It is basically an LS machine but has a large column–mounted or remote keyboard for use by the customer. The printer door can be locked to prevent unauthorised access.
Figure 1.5 General View (CX30 TK – Column–mounted Version)
Customer display
Weighplate
Adjustable foot (6)
On/Off switch (below edge)
Rating plate
1.1.5 CX34
The CX34 unit is a hanging scale which is suspended from a customer’s support. A goods scoop rests in a cradle assembly suspended underneath the unit.
Spirit level
Vendor display
Customer keyboard
Column
Stamping plate
Ticket mouth
DCU/external keyboard controller
Keyswitch
Keyboard
Figure 1.6 General View (CX34)
Customer support
Host/Master and ISC sockets
Vendor display
Keyboard
Ticket mouth
Support bracket
Stainless steel scoop
Cradle assembly
Mains socket
Printer door
Printer door
Printer, ON/OFF switch, keyswitch and DCU socket (inside printer compartment)
1–6
1 — Introduction
gg)
1.2 General Data
Subject Description Notes
Power requirement 110–120/220–240 Vac +10/–15%, 50–60 Hz,
35VA (non–printing), 160VA (printing) 5V regulated supply capable of providing
20mA maximum in normal operating conditions
Scale range See ”Digit 1 – Capacity” in Table 6.1 for scale
ranges
Keyboard (operator and programming)
Keyboard (customer self–service)
Display Two integral, four–zone displays (customer
Printer Receipt printer optional
Membrane lattice (5 x 14 matrix), 69 key positions
Membrane lattice (9 x 14 matrix), 125 key positions
Membrane lattice (5 x 16 matrix), 80 key positions
Remote or column–mounted. Comprises individual moulded plastic keys: two sizes available, large and small. Single keyboard: 64 large, 128 small or any combination of keys. Two keyboards: 64 large keys each.
and vendor), and one small, integral LCD display (vendor). Customer display has option of being column–mounted.
One integral, four–zone display (vendor), and one small, integral liquid crystal display (vendor).
Two column–mounted, five–zone displays (customer and vendor)
Two integral, five–zone displays (customer and vendor)
Label and receipt printer optional (always
Power not to exceed 160 VA (worst case)
CX30 TK
CX20 CX30 CX34 CX30 TK
CX20
CX20 W
CX30 CX34
used on CX20 W)
1–7
1 — Introduction
(g
Subject NotesDescription
Approximate dimensions (height x width x depth)
Warm–up time 40 seconds (typical) Operating
temperature range Storage temperature
range Operating humidity
range Storage humidity
range
180 x 425 x 440 mm (7.8 x 16.7 x 17.3 in)
180 x 425 x 440 mm (7.8 x 16.7 x 17.3 in)
500 x 425 x 440 mm (19.7 x 16.73 x 17.3 in)
500 x 425 x 440 mm (19.7 x 16.7 x 17.3 in)
755 x 425 x 440 mm (29.7 x 16.7 x 17.3 in)
710 (with scoop) x 400 x 240 mm (28.0 x
15.75 x 9.45 in) Height of main housing is 330 mm (13.0 in) Suggested fitting height above floor is 1700
mm (67.0 in)
–10_C to +40_C –20_C to +50_C 0% to 95% (non–condensing) 0% to 98% (non–condensing)
CX20/CX20 W CX20/CX20 W CX20 with
column–mounted displays
CX30 CX30 TK CX34
1–8
Section 2
General and Technical
Table of Contents:
2.1 Mechanical Description 2–3
2.1.1 CX20/CX30 2–3
2.1.2 CX20 W and CX9/A702 2–7
2.1.3 CX34 2–11
2.2 Electrical Description 2–13
2.3 Networking 2–14
2.4 Built–in Test Equipment 2–14
2–1
CX20/CX30/CX34 Service Manual
2.1 Mechanical Description
2.1.1 CX20/CX30
The CX20/CX30 unit is built around a metal chassis to which is attached four adjustable feet (six on the CX30 TK machine) and a spirit level. A plastic lower housing fits around the chassis. A plastic case fits over the top of the lower housing and the interior assemblies. A weighplate is positioned at the top of the machine.
The keyboard is located at the front of the machine to the left–hand side. On the CX30 TK the additional customer self–service keyboard is remotely mounted or fitted to the front of a single head–up display column (there can both on one machine).
Figure 2.1 Exploded View (CX20) – R Version
2 — General and Technical
Screw, tamper –proof
Side panel
Screw and washer
Special nut
Customer display
Clamp
Weighplate
Printer door
Screw
Ticket mouth
Case
Cross assembly
A/D PCB support
Main PCB
A/D PCB Vendor display
Cross protection plate
Printer
Transducer assembly
External connector plate assembly
Screw
Printer spine
Screw
LCD Power supply unit (shrouded)
2–3
2 — General and Technical
The printer is located in a housing on the right–hand side of the machine, accessible through a removable drop–down door (lockable on the CX30 TK). It dispenses printed tickets through a ticket slot at the front.
The CX20 unit has two 20–character, vacuum–fluorescent, numeric displays, one on the vendor side of the unit and one on the customer side. These displays present numeric and annunciator information only. A small liquid crystal display (LCD), capable of presenting alpha and numeric information (16 digits), is positioned below the ticket slot to provide the operator with prompts and error messages.
The CX30 unit has a head–up display assembly. This comprises two alpha–numeric displays mounted on top of a double column at the customer side of the unit. The head–up display presents information to the customer and vendor by way of two display screens. Operator prompt information and error messages are presented only on the vendor side of the display assembly. The CX30 does not have an LCD.
Figure 2.2 Exploded View (CX30) – LS/ECR Version
Case
Tamper–proof screw
Side panel
Screw and washer
Cross assembly
Clamp
Customer display
Vendor display
Main PCB
A/D PCB
Weighplate
Printer door
Ticket mouth
Cassette (label and receipt printer only)
Cross protection plate
Printer
Transducer
External connector plate
2–4
Printer spine
Power supply unit (shrouded)
2 — General and Technical
A transducer is mounted on the chassis. On top of this is positioned a four–arm, cross assembly. The weighplate has four spigots on its lower surface, each of which sits in a cross rubber at the end of each arm of the cross assembly. A load placed on the weighplate is, therefore, transferred evenly through the cross assembly to the transducer. The transducer physically distorts under the influence of a load, and this distortion is detected by the strain–wires attached inside the transducer.
Overload protection of the transducer is provided by an adjustable grub screw fitted to the transducer mounting bracket directly underneath the transducer, below the centre of the cross assembly. Additional adjustable bolts are provided below the extreme end of each arm of the cross assembly to prevent asymmetrically–placed loads from overloading the transducer. There are no mechanical stops to prevent the occurrence of an excess negative load.
A printed circuit board (PCB) containing the power supply components is attached to the chassis: the power supply is a switch mode power supply (SMPS). This assembly is covered by a metal shroud fabricated from sheet aluminium. The shroud is ventilated by a series of slots around the upper area of its sides.
A main PCB containing the majority of the electronic components of the unit is positioned over the chassis and below the cross assembly. A rectangular hole near the middle of the main PCB provides clearance for the transducer mounting block onto which the cross assembly is secured.
The main PCB is positioned above the chassis on four pillars, one at each corner: two pillars are attached to the chassis and two to the printer spine. Two clamps, each spanning two pillars and held in position by two special nuts, clamp the main PCB to the top of the pillars. The top surface of the pillars is where the adjustable bolts are installed which act as asymmetric overload stops for the transducer.
A secondary PCB, the analogue–to–digital converter (A/D PCB), is installed on the component side (underside) of the main PCB. This is located by four plastic pillar clips spanning between the A/D PCB and the main PCB, and by the electrical plug interface.
A communications controller (comms) PCB is available as an optional addition and is fitted on the component side of the main PCB. This is located by four plastic pillar clips and is connected to the main PCB by a flying ribbon cable from the comms PCB.
For descriptions of the transducer, keyboard, displays, printers, main PCB and comms PCB, refer to the appropriate sections in this manual.
2–5
2 — General and Technical
Figure 2.3 Scale Base – Plan View (CX20/CX30)
Transducer assembly
External connector plate
Cash drawer connector
ISC connector
Host/Master connector
Mains On/Off switch
Mains connector/ filter
Primary earth
Fuse holder
Support (for main PCB)
REAR
Tunnel to head–up display
Chassis
Printer spine with cross corner stops (2 – off)
Cross protection plate
Motor gearbox (for label backing paper)
Printer stepper motor
Earth bracket
Spirit level
Lower housing (plastic)
FRONT
Power supply unit (shrouded)
Support pillars and cross corner stops (2 – off)
LCD cradle
Connector for DCU and remote keyboard
Keyswitch
2–6
2 — General and Technical
2.1.2 CX20 W and CX9/A702
The CX20 W and CX9/A702 machines are used in conjunction with ULMA Automatic Stretch Wrapping machines. Together they provide indicating, printing and weighing functions and are an integral part of the wrapping equipment. They can also be used on other manufacturers stretch wrapping machines.
Figure 2.4 ULMA Wrapping Machines
The CX20 W is an indicating and printing machine. It provides an RS232 output for communication with the wrapping machine and generates the wrapper program number.
The CX20 W is a modified version of a CX20 LS in which the transducer assembly, cross assembly, weighplate and customer display have been removed. Added to it are an RS232 interface PCB, a photocell detector and three output connectors. In place of the customer display is a metal plate.
The RS232 interface PCB is fitted over six pillars screwed in to the base of the CX20 W, adjacent to the power supply. It is secured to the top of the pillars with six screws with integral shakeproof washers.
The photocell is fitted to a bracket, attached to the printer spine. The head of the photocell is positioned just in front and above the print head (where the paper roll exits the printer).
An output for connection to the remote transducer (CX9/A702) is fitted to the connector plate assembly towards the rear of the machine. Two outputs for connection to wrapping machines are fitted to an output plate. This plate is fitted above a cut-out in the base adjacent to the RS232 PCB, towards the rear of the of the machine.
2–7
2 — General and Technical
Figure 2.5 Exploded View (CX20 W)
Printer door
Case
Side panel
Special nut
Main PCB
Plate
A/D PCB
Tamper–proof screw
A/D PCB support
Housing support bracket
Case securing screw
Ticket mouth
Display bracket
Display
Cassette
Cross protection plate
RS232 interface PCB
External connector plate assembly
The CX9/A702 is a remote weighing platform connected to the CX20 W. It has been modified by removing all electrical components and leaving only the transducer assembly, cross assembly, weighplate and transducer cable termination. See Section 18 for details.
For descriptions of the transducer, keyboard, displays, printers, main PCB and comms PCB, refer to the appropriate sections of this manual.
Label taken sensor
Printer spine
Printer
LCD display
Power supply unit (shrouded)
Connector plate assembly
2–8
Figure 2.6 Exploded View (CX9/A702)
2 — General and Technical
Weighplate
Instrument screw
Cross
Transducer assembly
Top cover
Cross rubber
Transducer retainer
Blanking panel
Base
Spirit level
Levelling foot
2–9
2 — General and Technical
Figure 2.7 Scale Base – Plan View (CX20 W)
RS232 PCB
Chassis
Transducer cable output connector
ISC connector
Host/Master connector
Unit On/Off switch
Mains connector/ filter
Primary earth
Fuse holder
External connector plate with earth stud
Wrapper interface connector
RS232 wrapper interface connector
Printer spine (label printer) and corner stops
Output connector plate
REAR
Cross protection plate
Motor gearbox (for backing paper)
Printer stepper motor
Printer
Photocell
LCD cradle
Lower housing (plastic)
FRONT
Power supply unit (shrouded)
Support pillars and cross corner stops (4 – off)
LCD display
Connector for DCU and remote keyboard
Keyswitch
2–10
2 — General and Technical
2.1.3 CX34
The CX34 unit is built around a mild steel chassis which is suspended from a customer support via a fixing assembly. Fitted to the front (vendor side) and rear (customer side) of the chassis are moulded plastic housings which enclose all the unit’s major components Projecting from the underside of the unit is a bracket which supports the cradle assembly and scoop that hangs directly underneath.
The front housing houses a printer, suspension assembly, power supply unit and vendor display PCB. There is a rectangular aperture at the front of the housing over which is fitted a vendor display screen; below this is a a keyboard. Another aperture, underneath the front housing at the right–hand side, allows printer tickets to exit the unit; a black plastic moulding insert with cut-out is fitted over the aperture.
Figure 2.8 Exploded View (CX34)
Rear housing
Customer display
Customer display PCB
Comms PCB
Main PCB
Chassis
Transducer assembly
Power supply cover
Support fixing
Printer spine
Printer cassette
Printer door
Front housing
Suspension assembly
Cradle assembly
Bracket
Vendor display
Keyboard
Printer assembly
2–11
2 — General and Technical
The rear housing houses a main PCB, A/D PCB and customer display PCB. A customer display screen is fitted externally towards the bottom of the rear housing.
The printer assembly is fitted to both sides of a vertical printer spine which is fitted to the chassis towards the right–hand side of the unit. A bracket, fitted to the front of the printer spine, along with the chassis, printer door and printer spine itself, form a printer compartment at the right–hand side of the unit. In this compartment are: print head assembly, paper sensor and cassette locating bars (label machines only), mains ON/OFF switch, operator keyswitch and DCU connector. On the left–hand side of the spine are fitted the printer drive motors. The printer door is held shut by magnets.
The suspension assembly, which incorporates the transducer assembly, supports the cradle assembly and scoop. The top of the suspension assembly (mounting boss) is secured to the top of the chassis. The bottom of the assembly protrudes through a hole in the base of the unit; the cradle assembly hooks over this.
The power supply PCB is fitted to four pillars attached to the left–hand side of the chassis. It is secured with two screws (adjacent to left–hand side of unit) and two hexagonal support pillars. An aluminium RFI cover (complete with warning label) fits over the PCB and is secured to the two hexagonal pillars. It has slits in its sides for ventilation and slots and cut-outs in its bottom edges for cables and looms. Cables are protected by rubber rings when passing through the slits in the aluminium cover and chassis.
The vendor display PCB is fitted over the aperture inside the front housing. It is fixed to two narrow vertical brackets which, in turn, are fitted to four pillars (two per bracket) which support it proud of housing.
The keyboard, which has 80 keys, is fitted to the outside of the front housing in a specially moulded recess just below the display aperture. An operator’s overlay is adhered to the front of the keyboard; in front of this is a transparent sheet held in position by two rubber strips above and below the keyboard. The transparent sheet protects the overlay and also holds in position a programming overlay (supplied loose) as it is only fixed to the keyboard along its bottom edge.
The main PCB is fitted to the back of the chassis on four pillars, component side outermost. A rectangular hole in the PCB allows looms to be passed through to the other side of the unit, via a circular hole in the chassis. The main PCB has four pillars on the component side for securing the A/D PCB; each pillar has an internal, flexible barb for locking the A/D PCB in place.
The A/D PCB is fitted towards the top of the main PCB. It clips into a connector on the main PCB and is held in place by the four pillars.
The customer display PCB is fitted to the inside of the rear housing. Its fixing is similar to that of the vendor display PCB.
At the top of the unit, moulded into the front and rear housings, is a raised section which is approximately 50 mm proud of the main unit. Cut–outs in the top of the section allow the mounting boss to pass through it and give access to the ISC and Host/Master connectors and mains input socket which are fitted to the top of the chassis.
2–12
2.2 Electrical Description
The unit is powered by a mains electricity supply, which is transformed, rectified and smoothed by a power supply unit. The power supply unit distributes the derived power supplies to the main PCB through a cable loom terminated by a multi–pin plug. Any external power supply requirements (such as when powering an external data network) are provided by a connection from the main PCB. When fitted, the comms PCB also provides a local power supply for the network.
The transducer is a strain–wire type connected through a local PCB on the transducer to the A/D PCB. The A/D PCB converts analogue data received from the strain–wires into digital form. The resistance of the strain–wires changes according to the strain placed upon them (caused by physical distortion of the transducer shell), and this change of resistance is detected by the A/D PCB. The A/D PCB generates a digital equivalent of the analogue input for use by calculation circuitry on the main PCB.
The main PCB derives a calculation of the load weight, by reference to firmware which determines the units of measure (Imperial, metric, or other according to customer choice). The load weight data is passed to the display driver and to the microprocessor. The load weight is displayed on both customer and vendor displays.
2 — General and Technical
The main PCB scans the keyboard for input. If a Price Look Up (PLU) is entered, the microprocessor acquires the price per weight data from memory (which is backed–up by a battery on the main PCB). The PLU data, which includes price per weight and goods description, is passed to the display driver and to the microprocessor. The price per weight or item price data and the goods description is displayed on both customer and vendor displays (LCD on vendor side – CX20 only).
The microprocessor calculates the load price by reference to the load weight and PLU data, and passes the load price to the display driver. The microprocessor also passes operator–prompt information to the display driver.
On the CX20, the display driver displays the load price on both customer and vendor displays, and also displays operator–prompt information in alpha–numeric form on the LCD. On the CX30 and CX34, the display driver transmits both the load price and operator–prompt information to both customer and vendor displays. It also passes a discrete signal within the display data which is interpreted by the customer display to suppress operator prompt data from that display.
The microprocessor waits for the transaction to be accepted, modified, or cancelled: this is signalled to the microprocessor by further keyboard input or can be automatic. Assuming that the transaction is accepted, the microprocessor logs the transaction to a cumulative table of transactions. It then transmits a selection of data to the printer driver which is situated on the main PCB.
The printer driver, on receiving transaction data from the microprocessor, translates the data by reference to firmware stored on the main PCB. The firmware formats a printable entry, to include character–composition and page size data, and transmits the formatted data to the printer assembly.
In label mode, when transaction has been accepted (automatic or keyboard input), the printer prints a label and then advances the label roll ready for the next label operation: transaction is complete.
2–13
2 — General and Technical
In receipt mode, when transaction has been accepted (keyboard input), the microprocessor sums all the component transactions and transmits the result for display. This procedure continues for each transaction until the end of sale, then the microprocessor drives the printer to print the totals and transmits the results for display. When the operation is complete and the printer has finished, the microprocessor drives it to advance the ticket roll; this enables the ticket to be torn off by the operator and issued as an itemized receipt.
The unit includes a variety of connectors enabling connection to various external or network functions.
Details of unit operation are contained in the User Handbooks applicable to the unit. See Overview section for more details.
2.3 Networking
Refer to Section 21. Each unit is capable of being networked as either a MASTER or a SLAVE unit.
2.4 Built–in Test Equipment
The unit includes diagnostic software written in the EPROM firmware. This can be accessed for maintenance use by the setting of a DIL switch. The diagnostic software contains a number of diagnostic routines which the engineer can choose to run (refer to Section 8). Program progress and results are displayed on the unit displays. The unit also will display error messages generated from firmware in response to certain conditions of operator error or equipment failure: the list of error messages is shown in Section 10.
2–14
Section 3
Disassembly and Assembly
Table of Contents:
3.1 Introduction 3–3
3.2 Servicing the CX20/CX30 3–3
3.2.1 Removing the case 3–3
3.2.2 Fitting the case 3–4
3.2.3 Replacing the keyswitch 3–4
3.2.4 Replacing the DCU/remote keyboard connector 3–4
3.2.5 Replacing the LCD (CX20) 3–5
3.2.6 Removing external connector plate 3–6
3.3 Servicing the CX20 W and CX9/A702 3–8
3.3.1 Removing the case (CX20 W) 3–8
3.3.2 Fitting the case (CX20 W) 3–9
3.3.3 Replacing the keyswitch (CX20 W) 3–9
3.3.4 Replacing the DCU/remote keyboard connector (CX20 W) 3–9
3.3.5 Replacing the LCD (CX20 W) 3–10
3.3.6 Removing external connector plate (CX20 W) 3–10
3.4 Servicing the CX34 3–12
3.4.1 Removing the housings 3–12
3.4.2 Fitting the housings 3–13
3–1
CX20/CX30/CX34 Service Manual
3 — Disassembly and Assembly
3.1 Introduction
Before proceeding to service the machines please read the Safety Warnings in the Overview section (Page xv).
3.2 Servicing the CX20/CX30
WARNING HIGH VOLTAGES EXIST INSIDE THE UNIT. BEFORE
REMOVING THE COVER, ENSURE THAT MAINS POWER IS DISCONNECTED COMPLETELY. EXCEPT WHERE SPECIFIED IN THESE PROCEDURES, DO NOT APPLY POWER TO THE UNIT WHEN THE COVER IS REMOVED.
Refer to Figures 2.1 and 2.2.
3.2.1 Removing the case
To remove the case of the CX20/CX30 and gain general access to the unit interior, proceed as follows:
1 Switch off machine and isolate from the mains power supply. Refer to
Safety Warnings on Page xv in Overview section. 2 Remove weighplate plate (lift). 3 Remove ticket mouth (unclip and lift off). 4 Remove Posidrive screw from within ticket aperture. 5 Open printer door. (Door may be removed by unclipping it from the two
hinge clips: open printer door to a horizontal position and push down
firmly on the printer door near the hinge clips.) 6 Release case by removing two Posidrive screws in underside of
machine, located towards the left–hand side at the front (vendor) edge. 7 Release case by unclipping it from four snap–fit locations at rear
(customer) edge. Lift case a short distance from rear, then detach it
from the three locations at the front edge. 8 Carefully rotate case about front edge, so that rear edge is lifted over
unit and to front, and so that case is upside down: avoid straining any
electrical connections between case and unit. 9 Remove blank plate at left side of machine. 10 Disconnect flying connector for keyboard. 11 Disconnect case earth strap by removing its spade connection at
chassis secondary earth.
3–3
3 — Disassembly and Assembly
3.2.2 Fitting the case
To fit case of the CX20/CX30 and close up the unit, proceed as follows: 1 Connect case earth strap by attaching its spade connection at chassis
secondary earth. 2 Connect flying connector for keyboard. 3 Carefully rotate case about the front edge, so that rear edge is lifted
over machine and to rear. Check to ensure that wires are not trapped
by this action. 4 Position blank plate at left side of machine and settle case into position. 5 Fit case by locating front edge to location tongues on lower housing,
and then pressing rear edge down to secure (snap–fit). 6 Close printer door. (Refit, if removed, by aligning hinges with underside
of the two clips and pushing up until hinges click into position.) 7 Secure case by fitting two Posidrive screws in the underside of the
machine. 8 Secure case by fitting the Posidrive screw in the base of the ticket
aperture. 9 Fit ticket mouth over ticket aperture and clip in to position. 10 Fit tamper–proof screws to secure cover at top. 11 Fit weighplate (press fit).
3.2.3 Replacing the keyswitch
To change the keyswitch, at the front of the unit, proceed as follows: 1 Remove case (refer to Section 3.2.1). 2 Disconnect electrical connector from rear of keyswitch. 3 Remove keyswitch by removing two Posidrive screws. 4 Fit new item in reverse order and fit case (refer to Section 3.2.2).
3.2.4 Replacing the DCU/remote keyboard connector
To change the DCU/remote keyboard connector, at the front of the unit adjacent to the keyswitch, proceed as follows:
3–4
1 Remove case (refer to Section 3.2.1). 2 Remove main PCB (refer to Section 11.2.1). 3 Disconnect the keyswitch/DCU/LCD loom from the keyswitch. CX20
only: disconnect loom from the LCD; if necessary, detach LCD from
cradle (pull out). CX30 only: detach LCD connector end of
keyswitch/DCU/LCD loom from base. 4 Detach DCU/remote keyboard connector from the keyswitch/DCU plate
by removing the two screws from the front of the machine.
3 — Disassembly and Assembly
5 Detach the printer spine by undoing the two screws in the machine’s
base. 6 Cut the cable tie attaching the keyswitch/DCU/LCD loom and the power
supply PCB output cables to the shroud covering the power supply
PCB, noting its position. 7 Remove the DCU/remote keyboard connector and loom assembly
noting the routing of the loom. 8 Fit new item in the reverse order and fit main PCB (refer to
Section 11.2.2) and case (refer to Section 3.2.2).
3.2.5 Replacing the LCD (CX20)
Refer to Figure 3.1. To change the LCD, proceed as follows:
1 Remove case (refer to Section 3.2.1). 2 Detach LCD from clips in LCD cradle (pull out). 3 Disconnect LCD from wiring harness. 4 If necessary, remove LCD cradle from unit (pull out). 5 Reassemble in reverse order and fit case (refer to Section 3.2.2).
Figure 3.1 Unit Interior (CX20) – View on Front, Right Corner
LCD
LCD cradle
Looms
DCU/remote keyboard connector
Securing screw for DCU/remote keyboard connector
Key
Keyswitch
Mounting plate
Securing screw
3–5
3 — Disassembly and Assembly
3.2.6 Removing external connector plate
Refer to Figure 3.2. To remove and disassemble external connector plate, proceed as follows:
1 Disconnect mains supply. 2 Remove case (refer to Section 3.2.1). 3 Access is improved if main PCB is detached and if shroud of power
supply unit is removed. It is not necessary to perform this work but, if
desired, refer to Sections 11 (main PCB) and 16 (power supply unit). 4 It is possible to remove all components of external connector plate
without removing connector plate. If removal of plate is desired,
carefully apply firm, sideways pressure on connector plate by grasping
with
hand between adjacent case and top of mains connector/filter.
While pressure is applied, push back three integral clips retaining
connector plate to case (beginning with clip adjacent to filter unit) and
detach connector plate. 5 To remove fuse holder, make note of connections at rear of fuse holder
and disconnect. Remove fuse holder by removing integral nut and
washer at rear of fuse holder. 6 To remove mains connector/filter, make note of and disconnect spade
connections to mains connector/filter. Also, disconnect attached earth
lead at adjacent earth stud on chassis by temporarily removing nut from
earth stud. Remove mains connector/filter by removing two sets of
screws, nuts, shakeproof washers and plain washers. 7 To remove Off/On switch, make note of connections at rear of switch
and disconnect. Remove switch by pressing four integral clips inwards
at rear of switch, and pushing switch downwards through connector
plate. 8 To remove either or both 9–way electrical connectors, note that red
tracer in ribbon cable(s) is to rear of unit, then remove electrical
connector(s) by removing two (four) pillar nuts from undersurface of
connector plate. 9 To remove 3–pole cash drawer connector, note orientation of connector
(keyway to extreme left of unit) and remove connector by removing
castellated nut at rear of connector.
3–6
10 Items are fitted in reverse order (see above). 11 If applicable, fit shroud covering power supply PCB (refer to
Section 16). 12 If applicable, fit main PCB (refer to Section 11). 13 Fit case (refer to Section 3.2.2).
Cash drawer connector
ISC connector
3 — Disassembly and Assembly
Figure 3.2 External Connector Plate – View from above
REAR OF UNIT
WHITE
BLACK RED
Host/Master connector
Mains On/Off switch
Mains connector/filter
Fuse holder
External connector plate
Earth connections
BROWN
BROWN
BROWN (TO CONNECTOR: PLUGS INTO SK1 ON POWER SUPPLY PCB)
BLUE (TO CONNECTOR: PLUGS INTO SK1 ON POWER SUPPLY PCB)
BLUE
EARTH BRAID (TO CHASSIS PRIMARY EARTH)
Ferrite ring
BOTH GREEN (WHEN FITTED, THEY ARE CONNECTED TO POWER INPUT LOOM: PLUGS INTO PL8 ON MAIN PCB – REFER TO SERVICE INFORMATION CIRCULAR 358)
EARTH BRAID (TO CHASSIS PRIMARY EARTH)
GREEN (TO KEYBOARD LOOM CONNECTOR: PLUGS INTO PL4 ON MAIN PCB)
GREEN WITH YELLOW STRIPE (TO EARTH STUD ON KEYSWITCH/DCU PLATE)
EARTH BRAID (TO COVER, BEHIND KEYBOARD)
3–7
3 — Disassembly and Assembly
3.3 Servicing the CX20 W and CX9/A702
WARNING HIGH VOLTAGES EXIST INSIDE THE UNIT. BEFORE
REMOVING THE COVER, ENSURE THAT MAINS POWER IS DISCONNECTED COMPLETELY. EXCEPT WHERE SPECIFIED IN THESE PROCEDURES, DO NOT APPLY POWER TO THE UNIT WHEN THE COVER IS REMOVED.
Refer to Figure 2.5. For servicing of the CX9/A702 see Section 18.
3.3.1 Removing the case (CX20 W)
To remove the case of the CX20 W and gain general access to the unit interior, proceed as follows:
1 Switch off machine and isolate from the mains power supply. Refer to
Safety Warnings on Page xv in Overview section. 2 Remove ticket mouth (unclip and lift off). 3 Remove Posidrive screw from within ticket aperture. 4 Open printer door. (Door may be removed by unclipping it from the two
hinge clips: open printer door to a horizontal position and push down
firmly on the printer door, near the hinge clips.) 5 If fitted, remove printer cassette by lifting up print head release lever
and easing out cassette. 6 Remove two Posidrive screws in underside of machine, located towards
the left–hand side at the front (vendor) edge. 7 Remove the four tamper–proof screws and washers from the top of the
case. 8 Release case by unclipping it from four snap–fit locations at rear
(customer) edge. Lift case a short distance from rear, then detach it
from the three locations at the front edge. 9 Carefully rotate case about front edge, so that rear edge is lifted over
unit and to front, and so that case is upside down: avoid straining any
electrical connections between case and unit.
3–8
10 Remove blank plate at left side of machine. 11 Disconnect flying connector for keyboard. 12 Disconnect case earth strap by removing its spade connection at
chassis secondary earth.
3 — Disassembly and Assembly
3.3.2 Fitting the case (CX20 W)
To fit case of the CX20 W and close up the unit, proceed as follows: 1 Connect case earth strap by attaching its spade connection at chassis
secondary earth. 2 Connect flying connector for keyboard. 3 Carefully rotate case about the front edge, so that rear edge is lifted
over machine and to rear. Check to ensure that wires are not trapped
by this action. 4 Position blank plate at left side of machine and settle case into position. 5 Fit case by locating front edge to location tongues on lower housing,
and then pressing rear edge down to secure (snap–fit). 6 Close printer door. (Refit, if removed, by aligning hinges with underside
of the two clips and pushing up until hinges click into position.) 7 Secure case by fitting two Posidrive screws in the underside of the
machine. 8 Fit ticket mouth (press fit). 9 Fit tamper–proof screws to secure cover at top.
3.3.3 Replacing the keyswitch (CX20 W)
To change the keyswitch, at the front of the unit, proceed as follows: 1 Remove case (refer to Section 3.3.1). 2 Disconnect electrical connector from rear of keyswitch. 3 Remove keyswitch by removing two Posidrive screws. 4 Fit new item in reverse order and fit case (refer to Section 3.3.2).
3.3.4 Replacing the DCU/remote keyboard connector
(CX20 W)
To change the DCU/remote keyboard connector, at the front of the unit adjacent to the keyswitch, proceed as follows:
1 Remove case (refer to Section 3.3.1). 2 Remove main PCB (refer to Section 11.2.1). 3 Disconnect the keyswitch/DCU/LCD/RS232 loom from: the keyswitch;
the LCD display (detach LCD from cradle by easing up from bottom
edge): and the RS232 PCB. 4 Detach DCU/remote keyboard connector from the keyswitch/DCU plate
by removing the two screws from the front of the machine (either side of
the D–type connector). 5 Remove the DCU/remote keyboard connector and loom assembly
noting the routing of the loom. 6 Fit new item in the reverse order, then fit main PCB (refer to Section
11.2.2) and case (refer to Section 3.3.2).
3–9
3 — Disassembly and Assembly
3.3.5 Replacing the LCD (CX20 W)
Refer to Figure 3.1. To change the LCD, proceed as follows:
1 Remove case (refer to Section 3.3.1). 2 Detach LCD from clips in LCD cradle (pull out). 3 Disconnect LCD from wiring harness. 4 If necessary, remove LCD cradle from unit (pull out). 5 Reassemble in reverse order and fit case (refer to Section 3.3.2).
3.3.6 Removing external connector plate (CX20 W)
Refer to Figure 3.3. To remove and disassemble external connector plate, proceed as follows:
1 Disconnect mains supply. 2 Remove case (refer to Section 3.3.1). 3 Access is improved if main PCB is detached and if shroud of power
supply unit is removed. It is not necessary to perform this work but, if
desired, refer to Sections 11 (main PCB) and 16 (power supply unit). 4 It is possible to remove all components of external connector plate
without removing connector plate. If removal of plate is desired refer to
Section 3.2.6. Refer to this section also for removal of fuseholder,
mains connector/filter, mains On/Off switch and the 9–way electrical
connectors. 5 To remove the 5–pin DIN connector at end of plate: disconnect the
cable (four leads) from terminal block TB2 on the RS232 PCB and the
earth lead from the primary earth in base (refer to Figure 2.7); unscrew
connector’s locking ring and remove the connector and cable assembly
by pulling out from the underside of machine. 6 Items are fitted in reverse order (see above). 7 If applicable, fit shroud covering power supply PCB (refer to
Section 16). 8 If applicable, fit main PCB (refer to Section 11). 9 Fit case (refer to Section 3.3.2).
3–10
3 — Disassembly and Assembly
Figure 3.3 External Connector Plate (CX20 W) – View from above
REAR OF UNIT
Transducer interface connector
ISC connector
Host/Master connector
Mains On/Off switch
Mains connector/filter
Fuse holder
External connector plate
Earth connections
BROWN
BROWN
BLUE
TO RS232 INTERFACE PCB (TERMINAL TB2)
BLUE
YELLOW RED
GREEN
EARTH (TO CHASSIS PRIMARY EARTH)
BROWN (TO CONNECTOR: PLUGS INTO SK1 ON POWER SUPPLY PCB)
BLUE (TO CONNECTOR: PLUGS INTO SK1 ON POWER SUPPLY PCB)
EARTH BRAID (TO CHASSIS PRIMARY EARTH)
Ferrite ring
BOTH GREEN (WHEN FITTED, THEY ARE CONNECTED TO POWER INPUT LOOM: PLUGS INTO PL8 ON MAIN PCB – REFER TO SERVICE INFORMATION CIRCULAR 358)
EARTH LEAD (TO REAR DISPLAY BLANKING PLATE)
EARTH BRAID (TO CHASSIS PRIMARY EARTH)
GREEN (TO KEYBOARD LOOM CONNECTOR: PLUGS INTO PL4 ON MAIN PCB)
GREEN WITH YELLOW STRIPE (TO EARTH STUD ON KEYSWITCH/DCU PLATE)
EARTH BRAID (TO COVER, BEHIND KEYBOARD)
3–11
3 — Disassembly and Assembly
3.4 Servicing the CX34
WARNING HIGH VOLTAGES EXIST INSIDE THE UNIT. BEFORE
REMOVING THE COVER, ENSURE THAT MAINS POWER IS DISCONNECTED COMPLETELY. EXCEPT WHERE SPECIFIED IN THESE PROCEDURES, DO NOT APPLY POWER TO THE UNIT WHEN THE COVER IS REMOVED.
WARNING WHEN LIFTING, MOVING OR SUPPORTING THE
MACHINE TAKE ITS WEIGHT INTO CONSIDERATION.
Refer to Figure 2.8.
3.4.1 Removing the housings
To remove the front and rear housings of the CX34 and gain general access to the unit interior, proceed as follows:
1 Switch off machine and isolate from the mains power supply. Refer to
Safety Warnings on Page xv in Overview section. 2 Remove the cradle assembly (complete with scoop) by unhooking it
from the support bracket underneath the machine. 3 Disconnect machine from customer’s support assembly and carefully
place it on its rear (customer side), on a flat, clean surface. Don’t
forget: when moving or supporting the machine, take its weight into
consideration. 4 Remove black plastic moulding from support bracket aperture in
underside of machine, by removing the two screws. 5 In rear housing, where rims of front and rear housings overlap, remove:
three Posidrive screws (two in underside and one top left–hand side)
and one countersunk socket screw (top right–hand side). 6 Remove the two screws in the top of machine, front and back of
mounting boss.
3–12
7 Open printer door and remove printer cassette by releasing the print
head release lever and pulling it out. 8 Remove printer tear edge from ticket mouth (bottom right–hand side of
machine) by removing the slotted screw. 9 Remove the two countersunk screws from rim of front housing, at the
top. These may be hidden by the rim of the rear housing, so you may
have to lift up the rear housing to gain access to them.
3 — Disassembly and Assembly
10 Remove front housing: lift up front housing (being careful not to strain
the electrical connections) and disconnect looms from the vendor
display PCB and keyboard (intermediate connection). Disconnect the
keyboard earth braid from the power supply unit cover by removing the
screw and shakeproof washer: the earth lead connected to
keyboard/main PCB loom is also freed. 11 Detach rear display housing from chassis by carefully lifting out chassis
(being careful not to strain electrical connections) and disconnect the
loom from the customer display PCB (inside the rear housing). Remove any sub–assemblies as required (refer to appropriate sections).
NOTE: It is advisable, when servicing a component fitted to the chassis, that
the chassis be seated in either the front or rear housing, depending on which side the component is fitted. However, it may be easier to refit the chassis (after removing housings) to the customer fixing and service the unit in its hanging position.
3.4.2 Fitting the housings
To fit the front and rear housings of the CX34 and close up the unit, proceed as follows:
1 Fit any sub–assemblies previously removed and ensure chassis is
resting on its rear or is seated in the rear housing on a clean, flat
surface. 2 Connect free connectors of keyboard looms from front and rear
housings. 3 Connect the keyboard earth braid to the power supply unit cover, along
with the earth cable (connected to main PCB end of the keyboard
ribbon loom) using the screw and shakeproof washer. 4 Lift up chassis, carefully turn it upside down and lower it into the front
housing, being careful not to strain or trap any electrical cables. 5 Secure top of chassis to front housing using the two countersunk
screws (through the two countersunk holes in rim of front housing). 6 Connect display loom to customer display PCB in rear housing. 7 Fit rear display housing in position over front housing and secure using
the three Posidrive screws and then the countersunk socket screw (top
right–hand side) through rim of rear housing. Screw in the two screws
adjacent to the mounting boss in top of the unit through the front and
rear housings. 8 Fit the black plastic moulding in the support bracket aperture (underside
of machine) using the two M4 x 16 mm screws. 9 Fit the printer tear edge to ticket mouth (bottom right–hand side of
machine) using the slotted screw: make sure heads of the three small
screws on printer tear edge are outermost. 10 Fit printer cassette.
3–13
3 — Disassembly and Assembly
11 Lift up unit and fit it to customer’s fixing assembly. When moving or
supporting the machine, take its weight into consideration. 12 Fit the cradle assembly (complete with scoop) by hooking it over the
support bracket underneath the machine.
3–14
Section 4
Installation (CX20 W)
Table of Contents:
4.1 Introduction 4–3
4.2 Installation 4–3
4.2.1 Approvals and stamping 4–4
4–1
CX20/CX30/CX34 Service Manual
4.1 Introduction
This section details the installation procedure for the CX20 W and CX/A702 machines used in conjunction with the ULMA Automatic Stretch Wrapping machines.
4.2 Installation
1 Site and level the wrapper. 2 Secure the load cell extension platform (supplied with ULMA Scale Kit)
centrally to the CX9/A702 weighplate. 3 Install the load cell platform and the extension into the in–feed of the
wrapper. 4 Route the load cell cable through the supplied trunking to the indicator
support and up through the centre of the support. 5 Adjust the height of the load cell and its extension to achieve 5 mm
clearance between the bottom of a pack and the top of the in–feed belt.
Ensure that the clearance is equal on all extensions.
4 — Installation (CX20 W)
6 Level the load cell and re–check and, if necessary, re–adjust the
clearances. 7 Tighten or lock all adjustments. 8 Feed the mains socket and lead up through the indicator support. 9 Feed the wrapper interface cable down through the indicator support. 10 Place the indicator/printer on to the support and secure. 11 Connect the mains, load cell and interface connectors in to the base of
the indicator/printer. 12 Switch on and adjust calibration. 13 Connect wrapper interface connector to wrapper. 14 Set indicator to label mode, Pre–pack and Wrapper ON. 15 Create a stored tare value for tare No. 2. Refer to appropriate
Operators’ Handbook. 16 Create a PLU No. 2, with a stored tare No. 2 text Meat. Refer to
appropriate Operators’ Handbook. 17 Switch on wrapper, select scale mode and Press I. Refer to appropriate
Operators’ Handbook. 18 Set wrapper program to 1. Refer to appropriate Operators’ Handbook.
4–3
4 — Installation (CX20 W)
19 Select PLU No. 2 on scale. Refer to appropriate Operators’ Handbook.
Display will show ’Tare No 2’ – Press ’Enter’
Display will show ’Meat’
Simultaneously the tare number will be transmitted to the wrapper as
the wrapper program number.
The wrapper will respond by accepting the number 2 and then change
its program number from 1 to 2. At this point a prompt may appear
which says ”Width 2”. (This will depend on whether the wrapper is fitted
with auto width selection.)
If this appears adjust the width setting until the display changes to:
Prog 2 T=120 L=1 A=2 T=4
20 Place pack on the load cell extension. When a stable weight is
achieved a label will be printed. Simultaneously the wrapper will start
and transport the pack into the wrapper where it is wrapped and
discharged by the outfeed conveyor. 21 Load the customers PLU information and check the operation of a
selection of the PLUs with different stored tares.
4.2.1 Approvals and stamping
The indicators and load cell platforms have been granted EC approval. The approval is covered by two certificates:
Certificate No. T2426 for top pan scales i.e. CX20/A410 Certificate No. T2427 for two–piece scales i.e. CX31/B400
These certificates cover Non–automatic combinations of weighing and wrapping equipment.
The definition of non–automatic is as follows:
”Non–automatic weighing instrument:
Instrument requires the intervention of an operator during the weighing process, for example, to deposit on or remove from the receptor the load to be measured and also to obtain the result.”
This definition applies to both versions of in–feed as long as the removal of the label initiates the next wrapper cycle.
The certificate also covers the use of the CX20 and CX31/B400 with other types of automatic stretch wrappers if they conform to the above mentioned definition.
4–4
Section 5
Setting Up Procedures
Table of Contents:
5.1 Introduction 5–4
5.2 Service mode 5–5
5.2.1 Entering service mode using the SAC number 5–5
5.2.2 Entering service mode using the DIL switch 5–7
5.3 Configuration (Menu Option) 5–7
5.4 Calibration (Menu Option) 5–7
5.5 Clear Memory (Menu Option) 5–8
5.6 Format Memory (Menu Option) 5–9
5.7 Test Weight (Menu Option) 5–10
5.8 Test Diagnostics (Menu Option) 5–10
5.9 SAC Number (Menu Option) 5–11
5.10 Print Density (Menu Option) 5–12
5.11 Label Formats (Menu Option) 5–13
5–1
CX20/CX30/CX34 Service Manual
Machine Z programming menu
TEST REPORTS
SAC NUMBER
CONFIGURATION **
5 — Setting Up Procedures
Figure 5.1 Service Mode Flowchart
DIL switch on main PCB
CALIBRATION ***
CLEAR MEMORY
FORMAT MEMORY
TEST WEIGHT
TEST DIAGNOSTICS
SAC NUMBER
PRINT DENSITY
DATE/TIME ENTR Y
SCALE TEST
SYSTEM LOAD TEST
PROCESSOR TEST
STATIC RAM TEST
ROM TEST
EEROM TEST
DISPLAY TEST
* Machine dependent. ** On machines with Phase 1.3 software release, capacity can only
be changed by using DIL switch for service mode entry.
LABEL FORMATS *
EDIT FORMAT
CLEAR FORMAT
COPY FORMAT
PRINT FORMAT
KEYBOARD TEST
COMMS TEST
WEIGHING TEST
*** Only accessible by using DIL switch for service mode entry .
5–3
5 — Setting Up Procedures
5.1 Introduction
This section details the setting up procedures required after machine installation and various servicing operations. All of these procedures are carried out in Service Mode.
Figure 5.2 Menu in Service Mode
Machine Z programming menu
TEST REPORTS
SAC NUMBR
On machines with Phase 1.3 software release, capacity can only be changed by using DIL switch for service mode entry.
DIL switch on main PCB
Only accessible by using DIL switch for service mode entry .
Machine dependent.
These menu option messages appear in the commodity display .
PRINT DENSITY
SAC NUMBER
LABEL FORMATS
TEST DIAGNOSTICS
CONFIGURATION
Use → or ← keys to move to next option.
Press ENTER at required option to carry out service procedure.
TEST WEIGHT
CALIBRATION
CLEAR MEMORY
FORMAT MEMORY
5–4
5.2 Service mode
IMPORTANT: It is recommended that, before carrying out a service operation on a machine, you make a back–up of its data (refer to User Guide).
Service Mode is only available to the service engineer. It allows you to:
configure and calibrate the machineclear and format the memorycheck calibration with a known test weightrun a diagnostic testchange the service access code (SAC) numberchange the print densityedit label formats.
5 — Setting Up Procedures
There are two ways to access service mode:
by typing in SAC number; accessible from the Test Report menu in
Machine Z mode
DIL switch on main PCB; accessible via printer compartment.
5.2.1 Entering service mode using the SAC number
NOTE 1: You cannot change the capacity of a machine, during configuration,
if you use this method of service mode entry.
NOTE 2: You cannot use this method on UK machines.
To enter service mode using the SAC number carry out the following:
What You Do What You See
1 Switch machine on. 2 Insert Z key and turn it clockwise four
positions to access System Z mode.
SYSTEM Z
3 Insert the programming overlay: lift top
of the clear plastic sheet away from keyboard and insert programming overlay.
4 Press → or ← to access Machine Z
mode.
MACHINE Z
5–5
5 — Setting Up Procedures
5 Press ENTER.
6 Press → or ← until you reach the
TEST REPORT menu.
7 Press ENTER: a test report will be
printed.
8 When TEST REPORT disappears
from the display, quickly type in the four digit service access code (SAC) number: default is 9381. An asterisk (*) appears for each typed digit.
What You SeeWhat You Do
TOT ALS REPORTS
TEST REPORT
TEST REPORT
****
9 If this has been unsuccessful, due to
incorrect SAC number or time–out, machine reverts to TEST REPORT mode: repeat Steps 7 and 8.
10 To exit service mode turn key
counter–clockwise to one of the other keyswitch positions. (Pressing SHIFT then ENTER takes you back to TEST REPORT.)
CONFIGURATION
TEST REPORT
5–6
5 — Setting Up Procedures
5.2.2 Entering service mode using the DIL switch
To enter service mode using the DIL switch carry out the following:
What You Do What You See
1 Switch the machine on. 2 Insert one of the keys in the keyswitch
and turn it fully counter-clockwise (that is: to the first OPerator position).
3 Set switch 2 on DIL switch SW4 to the
ON position. Access is via the printer compartment: through aperture in printer spine on CX20/CX30; through aperture in chassis, adjacent to the mains ON/OFF switch, on CX34. If necessary, remove printer cassette (if fitted) .
CONFIGURATION
4 To exit service mode set switch 2 on
DIL switch SW4 to the OFF position.
5.3 Configuration (Menu Option)
For configuration procedure see Section 6.
5.4 Calibration (Menu Option)
For calibration procedure see Section 7.
5–7
5 — Setting Up Procedures
5.5 Clear Memory (Menu Option)
The clear memory function provides memory verification and initialisation (automatic ’cold start’). Examples of when to use the clear memory function are:
after a change of softwareafter changing the main PCBafter fitting a comms PCBafter changing the operating mode (that is: from vendor, system or
customer mode)
before installation of the machineafter corruption of the machine’s software.
If clear memory function is used the SAC number will revert to its default (9381): to change this number, if required, see Section 5.9.
What You Do What You See
1 Enter service mode (see Section 5.2).
2 Move to the CLEAR MEMORY menu.
3 Press ENTER.
4 Press Y. (If you do not wish to clear
the memory, press N followed by ENTER.)
5 Press ENTER. Machine bleeps a
number of times with all displays blank, and then runs through the warm–up routine. Machine returns to service mode (”CONFIGURATION” displayed) or system Z mode (”SYSTEM Z” displayed) depending on method of service mode entry: DIL switch or SAC number respectively.
CONFIGURATION
CLEAR MEMORY
SURE ?
SURE ?
CLEARING . . . . . . . .
(Y/N) N
(Y/N) Y
5–8
5 — Setting Up Procedures
5.6 Format Memory (Menu Option)
The format memory function is a RAM check. A corrupted RAM would probably result in a loss of some of the memory; this would be indicated by the RAM becoming full up earlier than expected. The format memory function works by filling up each RAM with predetermined PLUs.
What You Do What You See
1 Enter service mode (see Section 5.2).
2 Move to the FORMAT MEMORY
menu.
3 Press ENTER.
CONFIGURATION
FORMAT MEMORY
FORMATING . . . . . .
FORMAT MEMORY
5–9
5 — Setting Up Procedures
5.7 Test Weight (Menu Option)
To check the calibration of the machine by using a known weight carry out the following procedure:
What You Do What You See
1 Enter service mode (see Section 5.2).
2 Move to the TEST WEIGHT menu.
CONFIGURATION
TEST WEIGHT
3 Press ENTER.
4 Place test weight of known value on
weighplate (for example: 5 kg). Check reading in weight display.
5 Remove weight.
6 Press SHIFT then ENTER.
If weight display reading does not correspond to known weight, re–calibrate the machine (refer to Section 7).
5.8 Test Diagnostics (Menu Option)
For test procedure see Section 8.
0 : 0
3TEST MODE
5 : 0
5TEST MODE
0 : 0
6TEST MODE
TEST WEIGHT
5–10
5.9 SAC Number (Menu Option)
The machine’s SAC number is only displayed with the machine in the SAC NUMBER menu in service mode. If SAC number is unknown, entry to service mode must be effected by using the DIL switch (see Section 5.2.2): a new SAC number must be set, using this menu option, before exiting service mode.
What You Do What You See
1 Enter service mode using the DIL
switch (see Section 5.2.2).
2 Move to the SAC NUMBER option.
3 Press ENTER (right–hand side of
display shows current SAC number – default is 9381).
5 — Setting Up Procedures
CONFIGURATION
SAC NUMBER
SAC NUMBER
9381
4 Type in the new SAC number which
must be four digits long. Pressing CLEAR clears the number (reverts to
0).
5 Press ENTER. SAC number is
accepted.
6 If the entry is not accepted ENTRY
ACCEPTED is not displayed and the machine immediately reverts to SAC NUMBER menu: repeat Steps 3, 4 and 5.
1234SAC NUMBER
ENTRY ACCEPTED
SAC NUMBER
SAC NUMBER
5–11
5 — Setting Up Procedures
5.10 Print Density (Menu Option)
In service mode the density of the printing on the thermal paper can be adjusted. There are 13 density settings (0 to 12) to choose from on all machines, the default being 7. Both print heads, Rohm and Axiohm, have their recommended print density settings printed on them in the form of head resistance (Ohms) and resistance class respectively, which have to be converted to density settings (see Tables 5.1 and 5.2).
NOTE: The following recommended print density settings must only be used
as a guide.
Table 5.1 Print Head Density Setting Information – Axiohm
Category Density Setting
CLASS A 2 CLASS B 3 CLASS C 4 CLASS D 5 CLASS E 6
Table 5.2 Print Head Density Setting Information – Rohm
Category Density Setting
136 – 139 0 140 – 143 1 144 – 147 2 148 – 151 3 152 – 155 4 156 – 159 5 160 – 163 6 164 – 167 7 168 – 171 8 172 – 175 9 176 – 179 10
5–12
180 – 183 11 184 – 187 12
5 — Setting Up Procedures
To change the print density carry out the following:
What You Do What You See
1 Enter service mode and move to the
PRINT DENSITY option.
PRINT DENSITY
2 Press ENTER. (Current print density
appears in right–hand side of display.)
PRINT DENSITY
3 Type in new density number, using
Tables 5.1 and 5.2 only as a guide. If the machine can print labels, make sure a label roll is loaded (you will have to fit the spool spindle first if service mode was entered via the DIL switch). Check the print density by pressing the Test Print key to print out a printer test label (does not print a test receipt).
PRINT DENSITY 12
5
4 Press ENTER.
5.11 Label Formats (Menu Option)
Refer to Section 9. The Label Formats menu option is machine dependent and is only available on
machines with the label printing function (LS machines).
PRINT DENSITY
5–13
Section 6
Configuration
Table of Contents:
6.1 Introduction 6–3
6.2 Configuration procedure 6–3
6.2.1 Configuring the machine 6–3
6.2.2 Configuration Option Tables 6–5
6–1
CX20/CX30/CX34 Service Manual
6.1 Introduction
Each machine is configured to operate to customer’s requirements. The CONFIGURATION mode enables you to change the machine’s configuration. On networks the system is also configured in this mode.
NOTE: All machines on a network must be configured to operate in the
same weight system, that is: metric, avoir or cental. These cannot be mixed.
Throughout this section the diagrams in the ”What You See” column represent the display screens on CX30/CX34 machines. The bottom right–hand display is the alphanumeric commodity display which, on CX20 machines, is situated below the ticket mouth and is of LCD type.
6.2 Configuration procedure
6 — Configuration
NOTE: To enter service mode refer to Section 5.2.
6.2.1 Configuring the machine
What You Do What You See
1 In configuration mode
(CONFIGURATION is displayed), press ENTER. The machine configuration code number will appear: the left–hand digit (Option 1) flashes.
2 From Table 6.1 select your 16–digit
machine configuration code number and type it in. You can use the ← and → keys to move left and right.
3 Press ENTER. On a slave scale
configuration finishes at this point, however, a master scale prompts for SYSTEM ? (Y/N) Y allowing you to configure the system.
1111111111111
6429112112411
ENTRY ACCEPTED
CONFIGURATION
OR
Y/N YSYSTEM ?
6–3
6 — Configuration
4 If you wish to configure the system go
to Step 5. If you wish to end configuration press N then ENTER: the display will blank, then machine will run through its warm–up sequence.
5 Press ENTER.
6 From Table 6.2 select your 16–digit
system configuration code number and type it in.
7 Press ENTER.
What You SeeWhat You Do
A1111111111
A2122111111
8 From Table 6.3 select your six–digit
country override configuration code number and type it in.
9 Press ENTER.
10 Configuration has finished and
machine runs through its warm–up sequence.
ENTRY ACCEPTED
111111
112211
ENTRY ACCEPTED
6–4
6 — Configuration
6.2.2 Configuration Option Tables
The following tables give the configuration options:
NOTE: The following option tables are for Phase 1.3 main core software
release. For machines with software prior to Phase 1.3 refer to Section 25.
Table 6.1 Machine Configuration
Digit 1 — Capacity
0 30 kg x 5 g F Spare 1 25 lb x 1/8 oz G Spare 2 30 lb x 0.01 lb H Spare 3 15 kg x 5g I Spare 4 6 kg x 2 g J 5.2 kg x 2 g (string cell) 5 30 kg AVR K 10 kg x 5 g (string cell) 6 15 kg AVR L 6 kg x 1 g (string cell) 7 6 kg AVR M 12 kg x 2 g (string cell) 8 6 kg x 1 g N 12 kg AVR (string cell)
9 12 kg x 2 g O 30 kg x 5 g (string cell) A 30 kg x 10 g P 60 kg x 10 g (string cell) B 60 kg x 20 g Q 120 kg x 20 g (string cell) C 60 lb AVR R 150 kg AVR (string cell) D 150 kg x 50 g S 600 kg x 200 kg (string cell) E 300 kg x 100 g
Digit 2 — Tare System
1 Free tare; stored tare 6 Free tare; graduated tare
2 Free tare; stored tare; graduated tare 7 Cumulative free tare
3 Cumulative free tare; stored tare 8 Cumulative free tare; graduated tare
4 Cumulative free tare; stored tare;
graduated tare
5 Free tare only
Digit 3 — Tare Display
1 No tare display 3 Separate tare display only
2 Negative weight display 4 Separate tare display and negative weight
Digit 4 — Porte Minimal
0 1 division 5 12 divisions
1 4 divisions 6 14 divisions
2 6 divisions 7 16 divisions
3 8 divisions 8 18 divisions
4 10 divisions 9 20 divisions
Digit 5 — Bleep Behind Zero
1 No bleep if scales goes behind zero 2 Scale bleeps if scale goes behind zero
Digit 6 — Timeout On Numeric Data Entry
1 Timeout operates on numeric data entry 2 No timeout on numeric data entry
Digit 7 — Timeout On PLU Selection
1 No timeout 4 0.8 seconds
2 0.4 seconds 5 1.0 seconds
3 0.6 seconds 6 1.2 seconds
9 Cumulative free tare; stored tare; all tare
modes retained
6–5
6 — Configuration
Digit 8 — Tax Printing Options
Inclusive tax systems only.
1 No reference to tax value on receipt 3 Itemised tax printing on receipt
2 Tax value shown on receipt
Digit 9 — Weight Filtering
1 0.75 division weight filter 6 8 division weight filter
2 1 division weight filter 7 10 division weight filter
3 2 division weight filter 8 15 division weight filter
4 4 division weight filter 9 Weight reading freeze ON
5 6 division weight filter
Digit 10 — Price Base/Surcharge
1 Single price base; no surcharge 4 Single price base; surcharge
2 Dual price base; no surcharge 5 Dual price base; surcharge
3 x2, x4 price base; no surcharge 6 x2, x4 price base; surcharge
Digit 11 — Add Function
1 Add weighed goods and nonweighed
items; Print transaction and total labels
2 Add weighed goods and nonweighed
items; Print total label only
3 Add nonweighed items only;
Print total label only
Digit 12 — Printer Attached
1 Printer attached 2 No printer attached
Digit 13 — Symbols Interlock
With symbols suppressed:
1 Either weighed or nonweighed PLUs 2 Both weighed and nonweighed PLUs
Digit 14 — Weighing Control
1 Weighing OFF 2 Weighing ON
Digit 15 — Cash Drawer Detection
1 Selectable from Machine Z menu 2 Permanently enabled
Digit 16 — Weight Printing
1 Total weight not printed on receipt 2 Total weight printed on receipt
4 Add only allowed for continuous label
5 No Add function
6–6
6 — Configuration
Table 6.2 System Configuration
Digit 1 — Country Selection
A United Kingdom I Australia B Holland J New Zealand C France K Belgium D Germany L Austria E Canada M Switzerland F Mexico N Italy G USA O Denmark H South Africa P Norway
Digit 2 — Security Reports
1 Security reports OFF 2 Security reports ON
Digit 3 — Communications Controller
1 No communications controller fitted 3 Communications controller fitted; no
2 Communications controller fitted
Digit 4 — Voids
1 Voids printed on receipt 2 Voids not printed on receipt
Digit 5 — Operator Training
1 Only trading mode active (training mode
not active)
2 Both trading and training modes active
Digit 6 — X totals
1 Sub–totals and totals 2 Sub–totals only
Digit 7 — Totals clear
1 Totals clear ON 2 Totals clear OFF
Digit 8 — X System Totals Printing
1 Menu selected 5 Grand totals; machine totals; groups totals;
2 Grand totals only 6 Grand totals; machine totals; groups totals;
3 Grand totals; machine totals 7 Grand totals; machine totals; groups totals;
4 Grand totals; machine totals; groups totals
Digit 9 — Z System Totals Printing
1 Menu selected 5 Grand totals; machine totals; groups totals;
2 Grand totals only 6 Grand totals; machine totals; groups totals;
3 Grand totals; machine totals 7 Grand totals; machine totals; groups totals;
4 Grand totals; machine totals; groups totals 8 Grand totals; machine totals; groups totals;
Digit 10 — System Operating Mode
1 Vendor mode 3 Customer mode
2 System mode
Digit 11 — Tax System
1 Price inclusive of tax 2 Price exclusive of tax
Digit 12 — Host Communications Baud Rate
1 1200 Baud 3 4800 Baud
2 2400 Baud 4 9600 Baud
system menus
operator totals
operator totals; hourly totals
operator totals; hourly totals; PLU totals
operator totals
operator totals; hourly totals
operator totals; hourly totals; PLU totals
operator totals; hourly totals; PLU totals; security reports
6–7
6 — Configuration
Digit 13 — Tare Printing Options
1 No reference to tare value on receipt 2 Tare value shown on receipt
Digit 14 — Totalisation
1 Totalise all transactions 2 T otalise the add mode transactions only
Digit 15 — AM and PM Printing
1 Disabled 2 Enabled
Digit 16 — Receipt Sequential Numbers
1 Machine generated 2 System generated
Table 6.3 Country Override Configuration
Digit 1 — Unit Price Format
1 0 to 99999 3 0 to 999990
2 0 to 999999
Digit 2 — Transaction Rounding
1 To nearest 0.5 3 To nearest 5.0
2 To nearest 2.5
Digit 3 — Decimal Places
1 1 decimal place 3 3 decimal places
2 2 decimal places 4 No decimal places
Digit 4 — Punctuation
1 Commas 2 Decimal point
Digit 5 — Currency Symbol
0 No currency A Swiss Franc (Fr)
1 Pound sterling (£) B Currency P
2 Dollar ($) C Currency E
3 Rand (R) D Currency K
4 Franc (F) E Currency M
5 Austrian shilling (S) F Currency L
6 Krona (Kr) G Currency D
7 Deutschmark (DM) H Peso (N$)
8 Guilder (ƒ) I Lira (Lit)
9 Finnish mark (mk)
Digit 6 — Receipt Rounding
1 To nearest 0.5 3 To nearest 5.0
2 To nearest 2.5
Digit 7 — Transaction Acknowledgement
1 No acknowledge 3 Accepted message
2 Recall sub–total
6–8
Section 7
Calibration and Adjustments
Table of Contents:
7.1 Introduction 7–3
7.2 Adjustment of Overload Stops (CX20/CX30) 7–3
7.2.1 Adjustment of Asymmetric Overload Stops 7–3
7.3 Adjustment of Overload Stops (CX9/A702) 7–3
7.4 Adjustment of Overload Stops (CX34) 7–3
7.5 Calibration 7–4
7–1
7 — Calibration and Adjustments
7.1 Introduction
Calibration data is held in the EEPROM. Calibration data contains span, zero and linearity settings.
During calibration the weight display is active and subdivision data displayed in the alphanumeric display.
NOTE: If the capacity of a machine is changed the machine must be
re–calibrated.
7.2 Adjustment of Overload Stops (CX20/CX30)
There is no adjustment necessary to the central overload stop, which is located directly underneath the transducer and the centre of the cross, as this is factory set.
7.2.1 Adjustment of Asymmetric Overload Stops
To adjust the asymmetric overload stops, proceed as follows: 1 Switch off machine and isolate it from the mains power supply. 2 Remove weighplate and case as detailed in Section 3. Then fit
weighplate back on cross.
3 Apply full load (varies according to scale) plus 0,5 kg (1 lb) to one
corner of weigh plate.
4 Adjust asymmetric overload stop below loaded corner so that head of
stop just contacts underside of weighplate. Lock overload stop in
position by tightening lock nut. 5 Repeat Steps 3 and 4 at three other corner positions. 6 Remove weighplate and reassemble machine (refer to Section 3).
7.3 Adjustment of Overload Stops (CX9/A702)
There is no adjustment necessary to the central overload stop, which is located directly underneath the transducer and the centre of the cross, as this is factory set.
7.4 Adjustment of Overload Stops (CX34)
There is no adjustment necessary to the overload stops above and below the transducer, as they are factory set.
7–3
7 — Calibration and Adjustments
7.5 Calibration
To calibrate the unit, proceed as follows:
NOTE: See Section 5.2 for service mode entry.
What You Do What You See
1 On the CX20/CX30/CX9/A702 check
that unit is level and adjust levelling feet if necessary.
2 Enter service mode by using the DIL
switch (refer to Section 5.2.2).
3 Press → (or ←) to obtain the
calibration menu option.
CONFIGURATION
CALIBRATION
4 Press ENTER.
5 Ensure weighplate is empty, then
press ENTER.
6 Place full load on the weighplate.
7 Press ENTER.
8 Remove load.
9 Press ENTER.
3 : 6
0 : 0
19 : 2
29 : 6
4 : 6
0 : 0
3/4
EMPTY PAN
ADD FULL LOAD
3/8
ADD FULL LOAD
3/8
EMPTY PAN
1/2
EMPTY PAN
ADD FULL LOAD
10
7
4
10
9
7
7–4
7 — Calibration and Adjustments
What You SeeWhat You Do
10 Place full load on the weighplate.
25 : 0
11ADD FULL LOAD
11 Press ENTER. Calibration is
complete.
CALIBRATION
If unit cannot self–calibrate at the weights in use, it will display OUTSIDE RANGE for approximately two seconds then revert to CALIBRATION.
A calibrated standard weight is required to perform these functions. If, while adding the full load, there is a fault on the transducer or the operator is applying incorrect loads, on pressing the ENTER key, the scale will display OUTSIDE RANGE and then abort the proceedings reverting back to CALIBRATION menu. The limit for this is ±30% of expected count value at full load.
7–5
Section 8
Testing
Table of Contents:
8.1 Introduction 8–3
8.2 Date/time Entry (Menu Option) 8–4
8.3 Scale Test (Menu Option) 8–5
8.3.1 Processor test (menu option) 8–6
8.3.2 Static RAM test (menu option) 8–7
8.3.3 ROM test (menu option) 8–8
8.3.4 EEPROM test (menu option) 8–9
8.3.5 Display test (menu option) 8–10
8.3.6 Keyboard test (menu option) 8–11
8.3.7 Comms test (menu option) 8–13
8.3.8 Weighing test (menu option) 8–15
8.4 System Load Test (Menu Option) 8–16
8.4.1 Loading the system 8–16
8.4.2 Measuring on the machine 8–18
8–1
CX20/CX30/CX34 Service Manual
8.1 Introduction
The unit performs a self–test at power–up. Further diagnostic testing is available from built–in test software which is arranged in sections. Any one section can be applied to test the health of a particular function, or all sections can be applied to provide a general health check.
To exit from any of the following tests at any time, turn key in keyswitch temporarily to SUPERVISOR position.
NOTE: It is recommended that, to carry out any of the following tests, you
enter service mode via the DIL switch. See Section 5.2.2.
Figure 8.1 Menu of Test Diagnostics (Service Mode)
8 — Testing
TEST DIAGNOSTICS
Press ENTER.
SYSTEM LOAD TEST
DATE/TIME ENTRY
Use → and ← keys to move to next option.
Press ENTER at required option to carry out service procedure.
SCALE TEST
8–3
8 — Testing
8.2 Date/time Entry (Menu Option)
Date and time may be set or changed.
What You Do What You See
1 Select DATE/TIME ENTRY option.
2 Press ENTER. (Date appears in
left–hand side of display, time in right–hand side. Left–hand digit of date flashes.)
3 Type in correct date and time. (Use
→ and ← keys to move left and right.)
DATE/TIME ENTR Y
13–4905/10/92
14–0606/10/92
4 Press ENTER. Date and time entry is
complete.
5 If you typed in an unacceptable date
or time (for example, 13 for the month), the following occurs: repeat Steps 3 and 4.
ENTRY ACCEPTED
DATE/TIME ENTR Y
ERROR
DATE/TIME ENTR Y
8–4
8.3 Scale Test (Menu Option)
All of the following tests are carried out in SCALE TEST menu. On pressing ENTER to access PROCESSOR TEST menu option a ’SCALE
IDENTITY’ report is printed.
Figure 8.2 Menu of Scale Test
SCALE TEST
PROCESSOR TEST
WEIGHING TEST STATIC RAM TEST
8 — Testing
Press ENTER.
COMMS TEST
KEYBOARD TEST
Use → and ← keys to move to next option.
Press ENTER at required option to carry out service procedure.
DISPLAY TEST
ROM TEST
EEPROM TEST
8–5
8 — Testing
8.3.1 Processor test (menu option)
Processor performs test on:
on–processor RAMaddress registersinternal interruptstimers
Any failure will result in display showing “PROCESSOR FAIL” and unit will not react to any keyboard or load input.
What You Do What You See
1 Select function.
2 Press ENTER. If OK .....
PROCESSOR TEST
else .....
3 ... a ’PROCESSOR TEST’ report is
printed.
PROCESSOR PASS
PROCESSOR FAIL
PROCESSOR TEST
8–6
8 — Testing
8.3.2 Static RAM test (menu option)
Processor writes data to all RAM addresses, destructively over–writing any data already there.
What You Do What You See
1 Select function.
STATIC RAM TEST
2 Press ENTER. Runs through the test.
”RAM NOT FITTED” is displayed where RAM is not fitted. A ’STATIC RAM TEST’ report is printed simultaneously.
3 When test is complete, either:
or:
0
TESTING . . . . . . . . .
1
TESTING . . . . . . . . .
9
RAM NOT FITTED
STATIC RAM TEST
STATIC RAM FAIL
8–7
8 — Testing
8.3.3 ROM test (menu option)
A value is generated and printed for each of the three ROMs in unit: two main EPROMs (A+B and C+D) and one PROMX. These values should be compared with values labelled on ROMs at manufacture. Values must not have altered.
What You Do What You See
1 Select function.
ROM TEST
2 Press ENTER. Runs through the test.
A ’ROM TEST’ report is printed simultaneously.
3 When test is complete, either:
or:
TESTING . . . . . . . . .
TESTING . . . . .
ROM TEST
ROM FAIL
4A43
0
1
8–8
8 — Testing
8.3.4 EEPROM test (menu option)
Caution DO NOT switch machine off during this test.
Existing EEPROM data is copied in triplicate to RAM and then deleted from EEPROM. The EEPROM is tested in data–empty condition and a value is generated and printed. On completion of test, RAM–held data is written back to the EEPROM and result of test printed. Test may be selected to run more than once. Cycle time is not less than one minute.
The following example is for two tests.
What You Do What You See
1 Select function.
2 Press ENTER.
3 Type in the number of tests you
require.
4 Press ENTER. Number in the Price
To Pay display will start counting until testing has finished. An ’EEPROM TEST’ report starts printing when ”EEPROM PASS” is displayed.
EEPROM TEST
NO . OF TESTS 1
NO . OF TESTS 2
1
TESTING . . . . 2
1
TESTING . . . . 1
EEPROM PASS
5 If EEPROM test fails the following will
be displayed after ”TESTING . . . . ”
has finished:
EEPROM TEST
EEPROM FAIL
8–9
8 — Testing
8.3.5 Display test (menu option)
This test has two parts: first part checks display function; second part provides display burn–in at manufacture. Display burn–in is not required in the field as all new display units are supplied already burned–in. First part energizes sequentially every display panel (and LED, if applicable) at one–second intervals, then all panels indicate sequence 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. Test runs in continuous loop until keyswitch is set temporarily to SUPERVISOR position.
What You Do What You See
1 Select function.
2 Press ENTER.
DISPLAY TEST
BURN TIME = 2880
3 Press ENTER: Display Test cycle
begins. Each digit in the first panel will energise in sequence. This is repeated for each panel (left to right).
4 Indicators will illuminate then
extinguish in sequence. (Top downwards, then left to right.)
5 All the digits of each display will show
noughts, then ones, twos etc. up to nines, in sequence.
6 The Display Test cycle (in Steps 3 to
5) will continue indefinitely. To exit, turn key temporarily to SUPERVISOR position (all display segments are displayed), then turn key back again (a ’DISPLAY TEST’ report is simultaneously printed).
8.
000000 000000 000000 000000 0000000000000000
DISPLA Y TEST
8–10
8 — Testing
8.3.6 Keyboard test (menu option)
Once test has started you must press every key position on the keyboard in sequence. Starting at top left–hand corner (key position ’1’) work from left to right, then do the same for next row down, and so on. At each correct key press the machine will produce a normal BEEP tone and the displayed PRESS KEY number will increase by one. However, an incorrect key press produces a different, and slightly shorter BEEP, and the displayed ”PRESS KEY” number will remain the same. When test is completed successfully, test result is printed.
What You Do What You See
1 Select function.
KEYBOARD TEST
2 Press ENTER.
PRESS KEY 1
3 Press key at top left–hand corner of
keyboard.
4 Repeat Step 3 for all the remaining
keys. Press all keys on keyboard in sequence: from top row left–to–right, then next row down left–to–right, and so on. Unit will BEEP at each successful key press.
If you wish to exit before completing the test turn key in keyswitch to SUPERVISOR position.
5 When all the keys have been pressed,
and if keyboard has passed test, displays show the following and ’KEYBOARD TEST’ report is printed.
PRESS KEY 2
KEYBOARD PASS
KEYBOARD TEST
6 If a key fails (for example, at key 57),
test will not continue to the next key.
PRESS KEY 57
8–11
8 — Testing
7 Turn key in keyswitch to
SUPERVISOR position. A ’KEYBOARD TEST’ report is printed.
What You SeeWhat You Do
KEYBOARD FAIL
KEYBOARD TEST
8–12
8 — Testing
8.3.7 Comms test (menu option)
This test requires that all communications connectors on exterior of machine have ‘echo’ test connectors fitted (refer to Figure 8.3): these return outgoing signals back to machine. The machine sends a block of data and monitors returned result. The test runs through five baud rates (1200, 2400, 4800, 9600 and 19200) for the ISC and DCU, and indicates ’PASS’ or ’FAIL’ for each in the commodity display. A report is printed at the end of the test.
Figure 8.3 Link Fittings to Echo Plugs (D–type Connectors)
ISC echo plug pinout – link across pins 1 and 6
5 432
987
DCU echo plug pinout – link across pins 3 and 4
5432
987
1
6
To do a comms test carry out the following:
What You Do What You See
1 Select function.
COMMS. TEST
2 Connect echo plugs to ISC and DCU
connectors.
FIT ECHO PLUGS
3 Press ENTER: the number in the top
right–hand display will start counting.
0
ISC TEST 1200
8–13
8 — Testing
What You SeeWhat You Do
4 Display will then show the following
and a test report is printed.
5 Step 4 is then repeated for the 2400,
4800, 9600 and 19200 baud rates.
6 Test continues for the DCU. The
number in the top right–hand display will start counting.
7 Display will then show the following
and a test report is printed.
8 Step 7 is then repeated for the 2400,
4800, 9600 and 19200 baud rates.
9 Test ends.
ISC PASS
or:
ISC FAIL
0
DCU TEST 1200
DCU PASS
or:
DCU FAIL
COMMS. TEST
8–14
8 — Testing
8.3.8 Weighing test (menu option)
This test measures the stability of transducer and A/D PCB circuitry. Before the test you must determine duration of test cycle (in minutes, from 1 to 99). When set and when test cycle period is passed, test may begin. Weight is applied to weighplate, and display is monitored: display shows weight data as computer data and as final value. Test runs in continuous loop until keyswitch is set temporarily to SUPERVISOR position. A report is printed.
What You Do What You See
1 Select function.
WEIGHING TEST
2 Press ENTER.
CYCLE TIME = 1
3 Type in required cycle time (minutes).
4 Add test weight to weighplate and
press ENTER: the start of the ’WEIGHING TEST’ report is printed and the cycle begins. Weight display shows measured weight (2.000 weight units in sample), price to pay display shows weight data and the unit price display shows the number of data sub–divisions for final division (8,000 with 11 sub–divisions in sample) ...
5 ... when cycle time has elapsed and
when weight is steady, weight data is printed on the ’WEIGHING TEST’ report. Cycle starts again ...
6 ... to exit test, set keyswitch
temporarily to SUPERVISOR position. The ’WEIGHING TEST’ report finishes printing.
CYCLE TIME = 5
2.000 11 8000
WEIGHING TEST
8–15
8 — Testing
8.4 System Load Test (Menu Option)
Simulation of normal operations to check communication, totalisation and performance of machines. There are two tests available, both of which comprise the loading of transactions into the machine.
8.4.1 Loading the system
This test loads the system with a given number of transactions over a given period of time and a report is printed. This is repeated until CLEAR is pressed. This test can be used to check communication between machines.
What You Do What You See
1 Select SYSTEM LOAD TEST option.
2 Press ENTER.
SYSTEM LOAD TEST
3 Type in required receipt size. Receipt
size is the number of transactions that appear on each printed report. Range is from 1 to 99 transactions.
4 Press ENTER.
5 Type in required pause length. Pause
length is the time between each transaction. Must be in the range 1 to 9 seconds. 0 takes you to the other test (see Section 8.4.2).
RECEIPT SIZE 0
RECEIPT SIZE 10
PAUSE LENGTH 0
PAUSE LENGTH 2
8–16
6 Press ENTER. You may not see the
’NO TRANSACTIONS’ display every time ...
8 — Testing
What You SeeWhat You Do
NO TRANSACTIONS
... price to pay display shows the number of transactions ...
... when the number of transactions loaded reaches the receipt size a report is printed. The transactions continue to be loaded and a report is printed every time the receipt size is reached.
7 Press CLEAR to abort.
1
LOADING . . . . .
10
LOADING . . . . .
ABORTED
SYSTEM LOAD TEST
8–17
8 — Testing
8.4.2 Measuring on the machine
This test determines the speed of the machine by loading it with transactions over a pre–determined period of time. Apart from measuring machine performance it can also be used for checking totalisation and software.
What You Do What You See
1 Select SYSTEM LOAD TEST option.
2 Press ENTER.
3 Type in required receipt size. Receipt
size is the number of transactions that appear on each printed report. Range is from 1 to 99 transactions.
SYSTEM LOAD TEST
RECEIPT SIZE 0
RECEIPT SIZE 10
4 Press ENTER.
5 Press ENTER. This enters a 0.
6 Type in time for duration of test.
Range is 1 to 99 minutes.
7 Press ENTER. Unit price display
shows the duration time. Price to pay display shows the number of transactions. Report is printed every time the print size is reached ...
... test is complete ...
... if necessary, press CLEAR to exit.
PAUSE LENGTH 0
DURATION 0
DURATION 2
LOADING . . . . .
2.00
COMPLETED
10.00
793
8–18
SYSTEM LOAD TEST
Section 9
Label Formats
Table of Contents:
9.1 Introduction 9–3
9.2 Labels 9–4
9.2.1 Label format 9–4
9.2.2 Label fields 9–5
9.2.3 Label field co–ordinates 9–6
9.2.4 Label start point 9–7
9.2.5 The offset (90 and 180 degree formats only) 9–8
9.2.6 Determining the Start Point of a 90 Degree Format 9–9
9.2.7 Determining the Start Point of a 180 Degree Format 9–10
9.2.8 Text fonts 9–11
9.2.9 References 9–11
9.3 Creating a New Label Format 9–12
9.3.1 Design 9–12
9.3.2 Determining the label field co–ordinates 9–13
9.3.3 Programming 9–13
9.3.4 Example – creating a new 0 degree label format 9–14
9.4 Edit Format (Menu Option) 9–20
9.5 Clear Format (Menu Option) 9–25
9.6 Copy Format (Menu Option) 9–26
9.7 Print Format (Menu Option) 9–27
9–1
CX20/CX30/CX34 Service Manual
9.1 Introduction
Refer to Users’ Handbook Part 6, Label and Barcode Formats. The LABEL FORMATS menu allows Avery Berkel personnel and dealers to
create an original label format to customer’s requirements (with regard to local Weights and Measures Regulations).
Figure 9.1 Label Formats Menu
9 — Label Formats
LABEL FORMATS
Press ENTER.
EDIT FORMAT
Use → or ← keys to move to next option.
PRINT FORMAT
Press ENTER at required option to carry out service procedure.
COPY FORMAT
CLEAR FORMAT
The LABEL FORMATS menu options are:
EDIT FORMAT: allows you to create new label formats and edit existing
ones.
CLEAR FORMAT: clears all a format’s pre–programmed data by setting
everything to default.
COPY FORMAT: copies all a format’s programmed data to a new format
number.
PRINT FORMAT: prints out the format in the form of rectangles which
indicate the size and position of label fields. A code number or letter inside each rectangle indicates the field and font type.
9–3
9 — Label Formats
9.2 Labels
The label is from 40 mm to 160 mm long, up to approximately 50 mm wide and can be supplied pre–printed or plain.
NOTE: Dark pre–printed labels can cause problems with the printer’s
photodetector resulting in a LABEL FEED ERR error display. See Section 10.
9.2.1 Label format
Three types of label format are available: 0°, 90° and 180° orientation. The machine stores 60 formats; 20 of each type, of which 10 are pre–programmed and 10 flexible (see Table 9.1). Pre–programmed formats are standards that have already been set up and always reside in the machine (refer to Users’ Handbook Part 6, Label and Barcode Formats). Flexible formats are initially empty (that is, their settings are either 0 or default) allowing new formats to be created from scratch.
NOTE: Pre–programmed formats can be edited, however, after a ’cold start’
(refer to Section 5.5) they revert to their original settings.
Table 9.1 Allocation of Label Format Numbers
Label Format Number Angle of Rotation Format Type
0 – 9 0° Pre–programmed 10 – 19 0° Flexible 20 – 29 90° Pre–programmed 30 – 39 90° Flexible 40 – 49 180° Pre–programmed 50 – 59 180° Flexible
9–4
9 — Label Formats
9.2.2 Label fields
Each label format comprises a number of fields. A field is a rectangular area on the label in which is printed: unit price, dates, sales messages, text, barcode etc. A space is reserved for the optional store name at the leading edge of every label. Figure 9.2 shows a sample of a label and next to it is the same label showing the outline of the fields (obtained using the PRINT FORMAT option – see Section 9.7): this is the principle on which a new label format is created.
Figure 9.2 Sample Label and Label Fields – 0 Degree Format
Code number of field (in programmed font type)
UNIT PRICE 2 SYMBOL
UNIT PRICE 2
TOTAL PRICE 2 SYMBOL
TOTAL PRICE 2
DATE 1
LEGEND 2
TEXT 1
TEXT 2
TEXT 3
LEGEND 1
TARE SYMBOLS
TARE
LEGEND 3
SALES TEXT 1
Sample of Printed Label
DATE 2
UNIT PRICE SYMBOL
UNIT PRICE
OPERATOR NAME
TOT AL PRICE SYMBOL
TOTAL PRICE
WEIGHT/ITEM SYMBOL
BARCODE
WEIGHT/ITEMSSTORE NAME
Label Fields
9–5
9 — Label Formats
C
9.2.3 Label field co–ordinates
To program a new label format each field requires two co–ordinates: X1,Y1 and X2,Y2. These set the field’s size and position. The X1,Y1 co–ordinate is at the field’s top left–hand corner and the X2,Y2 at the opposite corner (bottom right–hand).
Each co–ordinate consists of two three–digit numbers (for example: X1,Y1 = 003,195). The numbers are obtained by measuring, in millimetres, the distance between the co–ordinate and a reference point in the X and Y planes. These distances are called x1 and y1 or x2 and y2 respectively. These distances are then multiplied by a plane–dependent conversion factor (as the printer cannot interpret a measurement) to give the co–ordinates X1 and Y1 or X2 and Y2. Refer to Table 9.2.
NOTE: The reference point, or start point, is always at the bottom left–hand
corner of the label, as read.
Table 9.2 Conversion Factor – Measurement/Co–ordinate
Conversion Type Measurement/
o–ordinate
Measurement (mm) to co–ordinate
Co–ordinate to measurement (mm)
x1 and x2 3 3/2 3
y1 and y2 3/2 3 3/2 X1 and X2 1/3 2/3 1/3 Y1 and Y2 2/3 1/3 2/3
Conversion Factor
0_ Label 90_ Label 180_ Label
9–6
9 — Label Formats
9.2.4 Label start point
The label start point, or origin, is the point on the label from which all label co–ordinates are determined. This point corresponds to the 000,000 co–ordinate stored in the machine. The label’s start point is always at (0° label), or near (90° and 180° labels), its bottom left–hand corner.
Figure 9.3 Label Start Points (0, 90 and 180 Degree Labels)
All labels aligned with print head’s left–hand side
Start point
Print head (right–hand side)
Y
TEXT
THIS WAY
0° Label
UP
Key:
X
a = offset: distance from right–hand
side of print head to label start point (90° and 180° labels only)
b = label width
X
90° Label
WAY UP
TEXT THIS
Direction of Label Feed
Label
Area reserved for store name (leading edge of every label)
Y
X
Start point
ab
Start point
180° Label
Y
Direction of X and Y planes
9–7
9 — Label Formats
9.2.5 The offset (90 and 180 degree formats only)
Unlike the 0° label format, the label start points of the 90° and 180° formats are referenced, in the machine’s software, to the right–hand side of the print head – see Figure 9.3. Consequently, an ’offset’ value has to be added to the Y (90°) and X (180°) coordinates to compensate for the difference between print head and label width.
The print head used on all label machines is approximately 53.5 mm wide. It has 160 dots across its width at three dots every 1 mm. Therefore, as maximum label width is 50 mm, this offset will always be required.
The offset value is usually obtained by measurement but can also be calculated – see Section 25.2.1.
Figure 9.4 Effect of the Offset (90 Degree Label)
All labels aligned with print head’s left– hand side
Direction of Label Feed
Outline of label
Print head (right–hand side)
90° Label with Offset
TEXT THIS WAY UP
Start point (correct)
90° Label without Offset
Outline of printed area (shaded)
9–8
TEXT THIS WAY UP
Start point (incorrect)
Offset
Y axis
9 — Label Formats
9.2.6 Determining the Start Point of a 90 Degree Format
To determine the start point for a 90° label format carry out the following (refer to Figure 9.5):
1 From the top edge of the label, measure 53.5 mm down in the plane of
the Y axis. 2 Draw in the X axis through this point. 3 Draw in the Y axis along the left–hand edge of the label.
The start point is the point of intersection between the X and Y axes.
Figure 9.5 Determining the Start Point (90 Degree Format)
Top edge of label
53.5 mm
Start point
X axis
9–9
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