WAYFARER TGX150 User manual

THE TGX150
INTERNAL RADIO LAN
SMART CARD
ELECTRONIC TICKET MACHINE
MODEL NO: 13754
SERVICE MANUAL
(Publication Number 53719)
COPYRIGHT
All rights reserved. No parts of this publication may be reproduced, stored in a retrieval system
or transmitted in any form or by any means; electronic, mechanical, photocopying, recording or
otherwise without prior permission of Wayfarer Transit Systems Limited.
©Wayfarer Transit Systems Limited 2005

Publication Number 53719. Issue 3, April 2012
SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM
IMPORTANT NOTES
This manual gives maintenance, service and repair information
for the Model 13754 Internal Radio LAN Smart Card Electronic
Ticket Machine manufactured by Wayfarer Transit Systems Ltd.
The information in this publication refers specifically to Model
13754. Paragraph 3.3 explains how the particular model can be
identified.
CAUTION
This machine has a rechargeable lithium battery as a
memory back-up in case of power failure. The battery has
a non-operational (shelf) life of 3 months. If the supply to
this machine is left switched off for a period exceeding
this time span, the machine MUST not be used until the
battery has been recharged. This can be achieved by
fitting the control board in a ticket machine and leave it
powered-up overnight.
The battery in a data module slowly loses power as it keeps
the memory components working when not in an ETM.
Normally, the battery is kept charged by the ETM when it is
in use. However, if a module has been left unused for a
period of approximately two months, it should be left in a
powered-up ETM overnight before use so that any power
loss during non-use is overcome.
WARNING
IT IS ESSENTIAL THAT ALL POWER SOURCES ARE
DISCONNECTED FROM THE ELECTRONIC TICKET
MACHINE AND ANY OTHER MACHINES IN THE SYSTEM
BEFORE CARRYING OUT ANY REPAIR, MAINTENANCE, OR
SERVICE OPERATIONS UNLESS THE INSTRUCTIONS
SPECIFICALLY STATE OTHERWISE. FAILURE TO
OBSERVE THIS PRECAUTION MAY RESULT IN
CONSIDERABLE DAMAGE TO MACHINES.

Publication Number 53719. Issue 3, April 2012
SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM
CONTENTS
PARA. TITLE PAGE
1 ABOUT THIS MANUAL...........................................................................................................................1
1.1 INTRODUCTION...............................................................................................................................1
1.2 PURPOSE AND CONTENT OF THIS MANUAL.............................................................................1
1.3 TERMS AND ABBREVIATIONS USED IN THIS MANUAL..........................................................3
2 TECHNICAL DATA ..................................................................................................................................5
2.1 GENERAL...........................................................................................................................................5
2.2 DIMENSIONS (APPROXIMATE).....................................................................................................5
2.3 ELECTRICAL.....................................................................................................................................5
2.4 ENVIRONMENTAL...........................................................................................................................5
3 GENERAL DESCRIPTION.......................................................................................................................7
3.1 WHAT IS RADIO LAN?.....................................................................................................................7
3.2 WHAT THE RADIO LAN SYSTEM DOES?.....................................................................................7
3.3 PHYSICAL DESCRIPTION...............................................................................................................9
3.4 DETAILED DESCRIPTION.............................................................................................................10
3.4.1 Keyboard ......................................................................................................................................10
3.4.2 Display..........................................................................................................................................10
3.4.3 Printer and Paper Control Components.......................................................................................10
3.4.4 Memory Module Receptacle .........................................................................................................11
3.4.5 ITSO Card Reader........................................................................................................................11
3.4.6 Internal Radio LAN PCB Mount Assembly...................................................................................11
3.4.7 Printed Circuit Boards..................................................................................................................11
3.5 MODEL IDENTIFICATION ............................................................................................................15
4 INSTALLATION......................................................................................................................................16
4.1 INSTALLING THE TICKET MACHINE.........................................................................................16
4.1.1 Fitting The Mounting Tray ...........................................................................................................17
4.1.2 Connecting The Power Cable Assembly.......................................................................................18
4.1.3 Final Operation............................................................................................................................20
5 MAINTENANCE & REPAIR - GENERAL INFORMATION ............................................................21
5.1 PRECAUTIONS................................................................................................................................21
5.2 MAINTENANCE LEVELS ..............................................................................................................21
5.3 TOOLS AND EQUIPMENT.............................................................................................................22
5.4 OBTAINING SPARE PARTS...........................................................................................................23
5.4.1 Electronic Mail.............................................................................................................................23
5.5 RETURNING MACHINES OR ASSEMBLIES FOR REPAIR........................................................23
6 ROUTINE MAINTENANCE AND SERVICING..................................................................................25
6.1 MAINTENANCE SCHEDULE ........................................................................................................25
6.1.1 Exterior Cleaning .........................................................................................................................25
6.1.2 Display Cleaning ..........................................................................................................................26
6.1.3 Lubrication ...................................................................................................................................26
6.1.4 Interior Cleaning ..........................................................................................................................26
6.1.5 Cleaning The Sync Sensor............................................................................................................26
6.1.6 Cleaning The Printer Roller .........................................................................................................26
6.1.7 Cleaning the Print Head...............................................................................................................27
6.1.8 Cleaning The Spigot (Shaft & Rotation Ball Bearing)..................................................................27
6.2 SERVICING......................................................................................................................................28

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SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM
6.2.1 Changing The Paper Roll.............................................................................................................28
6.2.2 Removing a Paper Blockage.........................................................................................................29
6.3 SPECIAL REPAIR OPERATIONS...................................................................................................31
6.3.1 Connector Crimp Terminals .........................................................................................................31
7 REMOVAL AND REPLACEMENT OF PARTS..................................................................................33
7.1 INTRODUCTION.............................................................................................................................33
7.2 THE TOP COVER.............................................................................................................................34
7.2.1 Opening The Top Cover................................................................................................................34
7.2.2 Removing The Top Cover Stay......................................................................................................34
7.2.3 Removing The Top Cover .............................................................................................................35
7.2.4 Removing The Top Inner Cover....................................................................................................36
7.2.5 Removing The Internal RLAN PCB Mount Assembly...................................................................36
7.2.6 Removing The Contactless Reader Assembly ...............................................................................39
7.3 KEYBOARD AND DISPLAY..........................................................................................................41
7.3.1 Removing The Keyboard and Display Assembly ..........................................................................41
7.3.2 Keyboard and Display Sub-Assemblies........................................................................................42
7.4 PRINTER PLATE ASSEMBLY .......................................................................................................45
7.4.1 Opening The Printer Plate Assembly............................................................................................45
7.4.2 Removing The Printer Plate Assembly..........................................................................................45
7.4.3 Removing The Printer Mechanism................................................................................................45
7.4.4 Removing The Printer Data Cable Assembly ...............................................................................46
7.4.5 Removing The Top Cover Latching Hook.....................................................................................47
7.4.6 Removing The Sync Sensor and Bracket.......................................................................................47
7.4.7 Removing The Sync Wheel............................................................................................................48
7.4.8 Removing The Paper Roll Spigot..................................................................................................48
7.4.9 Removing The Paper Roll Plinth ..................................................................................................49
7.4.10 Dismantling The Printer Mechanism.......................................................................................49
7.5 THE MODULE HOUSING ASSEMBLY.........................................................................................57
7.5.1 Removal of Module Housing.........................................................................................................58
7.5.2 Module Housing Disassembly / Reassembly.................................................................................59
7.6 LOWER COVER...............................................................................................................................61
7.6.1 Removing The Lower Cover..........................................................................................................61
7.6.2 Removing The Serial Number PCB...............................................................................................61
7.6.3 Removing The Type A/B-2 Coupler PCB......................................................................................61
7.6.4 Removing The Memory Expansion & Internal Serial PCB...........................................................61
7.6.5 Removing The Control PCB .........................................................................................................61
8 FAULT FINDING AND TESTING.........................................................................................................63
8.1 GENERAL INFORMATION............................................................................................................63
8.2 TYPES OF FAULTS.........................................................................................................................66
8.2.1 Control Board Faults....................................................................................................................66
8.2.2 Machine Dead...............................................................................................................................66
8.2.3 No Tickets Printed ........................................................................................................................66
8.2.4 Ticket Printing Uneven.................................................................................................................67
8.2.5 Paper Out Not Indicated...............................................................................................................67
8.2.6 Paper Movement Faulty................................................................................................................68
8.2.7 Graphic Display Faulty................................................................................................................68
8.2.8 Repeater Display Faulty...............................................................................................................69
8.2.9 Keys or Caption Strips Not Illuminated........................................................................................70
8.2.10 Keys Inoperative .....................................................................................................................70
8.2.11 Memory Module Not Recognised............................................................................................70
8.2.12 Difficulty in Inserting or Withdrawing a Module....................................................................71
8.2.13 ITSO Smart Card Not Accepted..............................................................................................71
8.2.14 No Radio LAN Comms............................................................................................................71
8.3 TESTING AND REPAIRING CABLES ASSEMBLIES..................................................................72
8.3.1 Testing Cable Assemblies .............................................................................................................72
8.3.2 Repairing Cable Assemblies.........................................................................................................72

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SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM
9 DRAWINGS AND PARTS LISTS...........................................................................................................87
9.1 ABOUT THE ASSEMBLY DRAWINGS AND PARTS LISTS.......................................................87
9.2 SEQUENCE OF ASSEMBLY DRAWINGS AND PARTS LISTS...................................................87
9.3 PARTS LISTING ............................................................................................................................112
APPENDIX 1. RECORD OF AMENDMENTS............................................................................................120
FIGURES
PAGE
Figure 1. The Radio LAN System.............................................................................................8
Figure 2a. Model and Serial Number Label............................................................................15
Figure 2b. Power, GPS, Serial No PCB, Connection Diagram ..............................................19
Figure 3. Paper Insertion Slot .................................................................................................28
Figure 4. Print Head Unlocking..............................................................................................29
Figure 5. Connector Crimp Terminals.....................................................................................31
Figure 6. The Top Cover Stays ...............................................................................................34
Figure 7. Top Cover Fixing Details........................................................................................35
Figure 8. Top Inner Cover Fixing Details...............................................................................36
Figure 9a. RLAN & Contactless Reader Assembly Fixings....................................................37
Figure 9b. Internal RLAN & Type A/B –2 PCB’s Mount Assembly......................................38
Figure 10. Contactless Reader Assembly.................................................................................40
Figure 11. Keyboard and Display Fixings ..............................................................................41
Figure 12. Keyboard and Display Assembly Details ..............................................................43
Figure 13. Printer Base Assembly (1).....................................................................................46
Figure 14. Printer Plate Assembly (2).....................................................................................47
Figure 15. Paper Control Mechanism.....................................................................................48
Figure 16. Dismantling The Printer Mechanism.....................................................................49
Figure 17. Printout Blade Fitting ............................................................................................50
Figure 18. Paper Guide Fitting................................................................................................51
Figure 19. Section Through Head Lock Knob........................................................................52
Figure 20. Print Roller and Motor Fitting...............................................................................53
Figure 21. Print Head and Lower Paper Guide.......................................................................54
Figure 22. Print Head Pivot Pins Location .............................................................................55
Figure 23. Paper Out Microswitch Fitting..............................................................................56
Figure 24. Module Housing Assembly to Control Board Fixings..........................................57
Figure 25. Module Housing Assembly Exploded view..........................................................58
Figure 26. Control Board Fixings & Connections..................................................................62
Figure 27. Crimp Pin Details..................................................................................................72
Figure 28. Interconnection Diagram .......................................................................................73
Figure 29. Printer Stepper Motor Drive Cable Assembly.......................................................74
Figure 30. Paper Out Microswitch Cable Assembly...............................................................74
Figure 31. Printer Data Cable Assembly.................................................................................75
Figure 32. Paper Movement Sensor Cable Assembly.............................................................75
Figure 33. Keyboard Power Cable Assembly.........................................................................76
Figure 34. Keyboard Data Cable Assembly............................................................................77
Figure 35. Graphics Display Data Cable Assembly................................................................78
Figure 36. Keyboard Backlighting Cable Assembly...............................................................79

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SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM
Figure 37. Serial Number PCB Cable Assembly (If fitted) ....................................................80
Figure 38. Solenoid (Module Housing) Cable Assembly (If fitted) .......................................81
Figure 39. Repeater Display Backlighting Cable Assembly 2................................................82
Figure 40. Repeater Display Backlighting Cable Assembly 1................................................82
Figure 41. Repeater Display Data Cable Assembly................................................................83
Figure 42. ITSO RF Cable Assembly.....................................................................................84
Figure 43. ITSO Antenna LED Cable Assembly....................................................................84
Figure 44. Internal RLAN Cable Assembly............................................................................85
Figure 45. PWR+GPS+SERIAL Tray Cable Assembly.........................................................86
Figure 46. General Assembly...................................................................................................88
Figure 47. Internal RLAN & Type A/B PCB Mount Assembly.............................................91
Figure 48. Top Cover Assembly.............................................................................................92
Figure 49. Lower Cover Assembly.........................................................................................94
Figure 50. Printer Plate Assembly ..........................................................................................96
Figure 51. Thermal Printer Assembly.....................................................................................98
Figure 52. Module Housing Assembly.................................................................................101
Figure 53. Keyframe Assembly ............................................................................................103
Figure 54 Type A/B Card Reader Assembly.........................................................................105
Figure 55. Mounting Tray Assembly - PWR+GPS+SN.......................................................107
Figure 56. Paper Ticket Punch Assembly (If Fitted) ............................................................109
Figure 57. Ticket Paper Specification...................................................................................111
TABLES
PAGE
Table 1. List of Abbreviations Used in This Manual 3
Table 2. List of Tools and Test Equipment 22
Table 3. Preventive Maintenance Schedule 25
Table 4. Fault Finding Chart 64
Table 5. General Assembly - Parts List 90
Table 6. Internal RLAN PCB Mount Assembly - Parts List 91
Table 7. Top Cover Assembly - Parts List 93
Table 8. Lower Cover Assembly - Parts List 95
Table 9. Printer Plate Assembly) - Parts List 97
Table 10 Thermal Printer Assembly - Parts List 100
Table 11. Module Housing Assembly - Parts List 102
Table 12. Keyframe Assembly - Parts List 104
Table 13. Type A/B Card Reader Assembly - Parts List 106
Table 14. Mounting Tray Assembly Power+GPS+SN - Parts List 108
Table 15. Paper Ticket Punch Assembly - Parts List (If Fitted) 110
Table 16. Parts Listing (Numerical Order) 112
Table 17. Parts Listing (Alphabetical Order) 116

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SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM Page 1
1 ABOUT THIS MANUAL
1.1 INTRODUCTION
This manual provides information about the servicing and maintenance of the TGX150
Internal Radio LAN Electronic Ticket Machine manufactured by Wayfarer Transit Systems
Ltd. Information about any other equipment, which may be used in conjunction with the
installation, is given in separate publications.
Please note that this publication has been written specifically for the Model 13754 Internal
Radio LAN ETM. It is important, therefore, that the user can identify the machine in use. Refer
to Paragraph 3.3 for information on model identification.
1.2 PURPOSE AND CONTENT OF THIS MANUAL
The purpose of this manual is to provide service and maintenance information for the operator
and service engineer working at Levels 1 and 2 as defined in Paragraph 5.2. The workings of
the electronics are not discussed in great detail since circuit board failures should be rectified by
straightforward board replacement. Defective boards may then be returned for repair.
In addition to maintenance instructions, the following chapters also provide additional
background information such as a list of technical data and a description of the appearance and
internal construction of the machine. This is included solely for the sake of completeness and
must not be taken to be a comprehensive guide to the operation and design of the machine.
The arrangement and content of Sections 2 - 9 is as follows: -
Section 2 - Technical Data.
This Section lists some of the more important mechanical, physical, and electrical
characteristics of the ETM.
Section 3 - General Description.
Section 3 gives a detailed description of the ETM and its assemblies so that users and
maintenance personnel can become fully familiar with the machine.
The first paragraph (3.1) explains what Radio LAN is. Paragraph (3.2) explains what the
Radio LAN System does. Paragraphs (3.3 & 3.4) give a physical and a detailed mechanical
description of the appearance and construction of the major assemblies and sub-assemblies in
the machine. A brief circuit description of the circuit boards is given in Paragraph 3.4.7.
Paragraph 3.5 explains how to identify the particular model of the ETM.
Section 4 - Installation
This section gives details on the installation and commissioning of the ETM.

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Page 2 SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM
Section 5 - Maintenance and Repair.
This section contains maintenance and repair information of a general nature. Paragraph 5.1
lists some essential precautions to be observed when carrying out repair or maintenance
operations. Paragraph 5.2 defines the three maintenance levels and explains the type of work
that may be carried out at each level. A list of essential tools and equipment for the three
maintenance levels is given in Table 2.
Paragraphs 5.4 and 5.5 explain, respectively, how to order spare parts and the procedure for
returning machines or assemblies for repair.
Section 6 - Routine Maintenance and Servicing.
This section gives information about the periodic servicing and maintenance operations that are
required to maintain the ETM in good working order.
Section 7 - Removal and Replacement of Parts.
Section 7 gives instructions for removing and replacing and (where applicable) dismantling the
various assemblies in the ETM. Apart from Paragraph 7.1, which gives general instructions,
each sub-assembly is dealt with in a separate paragraph, i.e. the top cover (Paragraph 7.2), the
keyboard and display (Paragraph 7.3), printer mechanism (Paragraph 7.4), module receptacle
(Paragraph 7.5) and the lower cover and the printed circuit boards (Paragraph 7.6).
Section 8 - Fault Finding and Testing.
This chapter gives a general fault-finding guide. Paragraph 8.1 gives some general information
about fault-finding procedures and how to use the section. Following this, Paragraph 8.2 deals
with the various types of faults that may occur, and gives step-by-step instructions for
identifying and curing them.
Paragraph 8.3 explains the methods for testing the cables, wiring, and printed circuit boards as
part of the fault-finding process.
Details of the servicing of printed circuit boards are not given in this manual.
Section 9 - Assembly Drawings and Parts Lists.
Section 9 consists of three paragraphs. The first (9.1) gives some general information about the
assembly drawings and parts lists, and Paragraph 9.2 lists them in order. Paragraph 9.3 gives a
complete parts listing (in numeric and alphabetic order) of the parts required to build one
machine.

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SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM Page 3
1.3 TERMS AND ABBREVIATIONS USED IN THIS MANUAL
The ETM and its components are normally described as if the machine were mounted in its
normal position, i.e. with the keyboard facing the user. Thus the ticket outlet is on the left-hand
side. This rule is by no means rigid, and other terms may be used where they seem more
appropriate and the sense is obvious. Abbreviations used in this manual are listed in Table 1.
ABBREV. MEANING
A
A/R
Assy
cm
DC
dia
Fig
GPS
In
ITSO
kg
kohm
LAN
M
mA
MHz
mm
No.
o/d
PCB
PL
POSN
QTY
RLAN
REF
SK
V
W
Amps
As required (on parts lists)
Assembly (on parts lists)
Centimetre(s)
Direct Current
Diameter
Figure
Global Positioning Satellite
Inch or inches
Integrated Transport Smart Card Organisation Limited
Kilogram(s)
Thousands of ohms
Local Area Network
Millimetres (fixings only - following number indicates size; e.g. M3)
Milliamp(s) (thousandths of amps)
MegaHertz (frequency of 10
6
Hertz)
Millimetres
Number
Outside Diameter
Printed Circuit Board
Plug (always followed by a letter or number, e.g. PLK or PL2)
Position (on parts lists)
Quantity
Radio LAN
Reference (on parts lists)
Socket (always followed by a number or letter)
Volts
Watts
Table 1. List of Abbreviations Used in This Manual

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SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM Page 5
2 TECHNICAL DATA
2.1 GENERAL
Recommended service interval - See Paragraph 6.1.
Lubrication - See Paragraph 6.1.
2.2 DIMENSIONS (APPROXIMATE)
Height - 220mm.
Depth - 245mm.
Width - 232mm.
Weight - 5.0kg.
2.3 ELECTRICAL
Display - Nan-ya LMCCAH299D,
160 x 128 pixel backlit display.
Transflective, 12o/c view
Repeater Display - Nan-ya MOO7G,
2 x 16 pixel backlit display.
Operating Voltage - 18 to 32V DC (nom. 24V DC).
Operating Current - 0.72A at 24V DC standby,
- 3A at 24V DC peak printing.
Internal Fuses - 3A polyswitch - main input
2.5A polyswitch - internal 5V
line protection.
100mA polyswitch (3 off) RS485
and vault circuit protection
2.4 ENVIRONMENTAL
Operating Temperature - -10°C to +55°C
Storage Temperature - -15°C to +70°C
Humidity - 15% to 95% non condensing.
Vibration - to product specification.

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3 GENERAL DESCRIPTION
3.1 WHAT IS RADIO LAN?
A wireless local area network (LAN) is a flexible data communications system implemented
as an extension to, or as an alternative for, a wired LAN. Using radio frequency (RF)
technology, wireless LANs transmit and receive data over the air, minimizing the need for
wired connections. Thus, wireless LAN’s combine data connectivity with user mobility.
In a typical wireless LAN configuration, a transmitter / receiver (transceiver) device, called an
(Access Point), connects to the wired network from a fixed location using standard cabling.
At a minimum, the access point receives, buffers, and transmits data between the wireless
LAN (Internal Radio LAN in the ETM) and the wired network infrastructure. A single
access point can support a small group of users and can function within a range of less than
one hundred to several hundred feet.
3.2 WHAT THE RADIO LAN SYSTEM DOES?
All vehicles are fitted with Internal Radio LAN ETM’s mounted in a convenient position,
depending on the vehicle.
As the driver proceeds along his route, details of all tickets issued or processed by the ticket
machine are stored in the memory of the module located inside the ticket machine. Typically,
the module will record information such as the number, value, and type of each ticket issued.
At the end of his shift, the driver returns the bus to the depot. The Depot is the location where
all information from the day’s transactions can be downloaded and analysed.
To do this the depot consists of wireless Radio LAN access points and (Depot readers
connected to Depot computers). As the bus comes into range of the depot the module
information is transmitted from the bus to the depot over the Radio LAN. The depot reader
and the stored information are read into the computer to which the depot reader is connected.
When taken together with information from all the other buses over a period of time, a study
of this accumulated information enables the bus company to determine the best and most
efficient way of operating their fleet of buses.

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The Radio LAN System consists of two main components:
•Access Point Kit –Transmits and receives data from the depot to the buses.
•ETM with Internal Radio LAN Assembly – Used to transmit data from each bus.
Figure 1. The Radio LAN System
This manual describes the Model 13754 Internal Radio LAN ETM only. For information
about the Access Point refer to the documentation supplied with the unit.
INTERNAL RADIO
LAN ETM
ACCESS POINT KIT
DEPOT
ONBUS

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3.3 PHYSICAL DESCRIPTION
The ETM is housed in a mild steel case with an angled section at the front mounting the
combined keyboard and graphics display. When a transaction is in progress, the driver keys
in the details of the transaction on the keyboard. The display gives a full visual indication of
the details that have been entered up to that point.
The input connector at the rear of the lower cover provides power, serial and GPS
connections to the ETM. On either side of the connector are location pegs that ensure that the
machine fits properly in its mounting tray.
The machine consists of three main parts - the top cover, the lower cover and the printer plate
assembly. The top cover is hinged to the front of the lower cover so that it opens away from
it. The printer plate assembly fits on top of the lower cover and is secured in position using
two screws.
The top cover is an open bottomed metal cover that mounts the keyboard and display on its
front sloping face, the repeater display on the top face and ITSO smart card electronics and
the Internal RLAN PCB mount assembly on the underside of the top face. The top cover is
hinged to the lower cover and a metal stay limits the amount of opening. The Internal RLAN
PCB mount assembly and ITSO Smart card circuit boards are protected by a plastic cover that
covers the complete underside of the top cover.
The printer plate resembles a shallow upturned tray that fits on top of the lower cover. The
printer plate has four holes, two at the back and one each side that line up with holes on the
lower cover. Four screws secure the two parts together. On one side of the printer base the
printer mechanism and drive motor assembly is located in a cut-out in the printer base so that
the motor projects into the lower cover. Situated on the other side of the printer base, a spigot,
which is positioned centrally on a platen (plinth) provides a means of supporting the ticket
paper roll.
The printer plate is ambidextrous, i.e. – enables the ticket machine to have a left or right hand
ticket exit by turning the plate 180 degrees so that the printer is on the required exit. The latch
hook and ticket exit covers can be fitted in two positions to facilitate this.
The lower cover is a vertical sided shallow tray containing the printed circuit control board,
the Memory Expansion & Internal Serial PCB, Type A/B Coupler MFRC53 PCB and the
memory module receptacle. The circuit boards are linked to the rest of the machine by a
number of cable looms and ribbon cables.
When in its operating position the ETM is mounted in a mounting tray. The Ticket machine
has two pegs that locate in the mounting tray slots; the machine is fixed in place by tray
latches that swivel clockwise and engage with the ticket machine pegs. A plug in the back of
the mounting tray engages with the socket on the ETM making power connections
automatically when the machine is installed.
The mechanical aspects of each of the major sub-assemblies are described in detail in the
following sections.

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3.4 DETAILED DESCRIPTION
3.4.1 Keyboard
The keyboard is at the front of the ETM. It holds a total of 32 keys, 31 are single finger size
and one is a double sized key. Twelve of the keys are in a rectangular block below the
graphics display; ten of these keys provide numeric input (0-9), and the remaining two keys
are the *key, and the C(cancel) key. Two vertical lines of keys adjacent to the right hand
side of the graphics display provide selection buttons for the screen options. Below this are
three single finger size keys, two act as up and down selector keys ( , ), the ( ) key
is for changing between menus and the double sized ISSUE or key is for confirming
an entry or issuing a ticket. A vertical line of eight keys adjacent to the left hand side of the
graphics display provide a means of selecting commonly used ticket types. A label
(descriptor) strip inscribed with eight commonly used ticket types is housed in a transparent
window next to the ticket type selector keys.
3.4.2 Display
The driver’s display is a 160 x 128 pixel graphics transflective display providing wide-angle
viewing. The driver’s display is integral with the keyboard, and provides menus for option
selection together with a visual indication of the information keyed in to the ticket machine.
The repeater display is a 2 x 20 graphics display orientated for customer viewing and gives an
edited display of the current ticket transaction. Each display is provided with backlighting to
enable it to be read in poor lighting conditions. Power and data connections to the keyboard
and displays are made by cable assemblies interconnecting the units and the control board.
3.4.3 Printer and Paper Control Components
•Printer
The printer is a thermal printer driven by a stepper motor secured to the bottom
of the printer mechanism. A knurled knob controls the spring-loaded locking
mechanism that positions the thermal head against the thermal ticket paper.
The printer construction is such that very little maintenance is required to
maintain a high level of operation.
Paper blockages are virtually non-existent but, in the rare event of such a
happening, releasing the print head (see Section 6) gives easy access to the
paper path.
•Paper Control Components
There are two paper control components: -
a. a sync wheel and sensor that detect the speed of movement of the paper,
i.e. as the ticket roll gets less, the sync wheel, which is attached to the
paper spigot, turns faster and this speed is used by the software to

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SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM Page 11
calculate the amount of paper left on the roll. A “paper low” indication
and the number of tickets left can be displayed to the operator.
b. a paper out microswitch, which is fitted inside the printer mechanism,
detects when there is no paper running through the printer head.
3.4.4 Memory Module Receptacle
The memory module receptacle is a square, plastic enclosure into which the driver inserts his
memory module at the start of his journey. The receptacle is mounted onto the control board
in the lower cover. The control board contains the necessary data transfer and power
electronics. The data transfer is via an infra-red link and power for the module is via an
inductive loop. The sides and lower face of the receptacle are shaped so that the module can
only be inserted one way.
The module is held in position in the receptacle by a manually operated spring-loaded latch.
Once the module is latched in position within the receptacle, it can only be released by
pressing the release button situated to the right of the slot (or if solenoid operated by pressing
a designated key on the keyboard. The internal spring then ejects the module a centimetre or
so out of the receptacle slot to allow full withdrawal manually.
3.4.5 ITSO Card Reader
The ITSO Card Reader is secured to the outer face of the top cover with its antenna PCB
secured to a mounting plate beneath the moulding on the upper side of the top cover. The
ITSO antenna board circuitry senses the presence of an ITSO smart card and reads the data on
it. The data is then passed to the Type A/B-2 Coupler PCB via the interconnecting cable
assembly.
3.4.6 Internal Radio LAN PCB Mount Assembly
The Internal RLAN PCB mount assembly contains the 802.11b Radio Module and PIC
Controller PCB that are fitted to a mounting plate on the underside of the top cover. The
Radio Module board plugs into the PIC Controller PCB. A ribbon cable connects the PIC
Controller PCB to the Memory Expansion & Internal Serial PCB in the lower cover. The
frequency band of RF transmission is 2.4 Ghz.
3.4.7 Printed Circuit Boards
Including the keyboard, there are eight printed circuit boards within the ETM. Four, the
control board, electronic serial number board, Memory Expansion & Internal Serial PCB and
the Type A/B-2 Coupler PCB are mounted in the lower cover. The keyboard / Display PCB,
is a component part of the keyboard and is mounted at the back of the keyboard itself. The
RLAN PIC Controller, Radio Module, antenna board and repeater display PCB are mounted
in the top cover.
The boards are described below.

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Page 12 SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM
•The Control Board
The control board is a surface mounted printed circuit board that controls all
the functions governed by the ETM's software, such as the display, keyboard
and the infra-red module. To do this, it is linked to the other parts of the
system by a number of connectors, as follows: -
PLEXT1 - Keyboard and Display data
PLEXT2 Keyboard and Display Power
PLA - Main input
PLJ - Paper low sensor
PLM - Printer data
PLO - Paper out microswitch
PLP - Serial number board
PLT - Printer stepper motor
PLX1 - Memory Expansion & Internal Serial PCB
PLY1 - Memory Expansion & Internal Serial PCB
SOL1 - Module housing solenoid
As well as providing the "control" of the various circuits in the ETM, the
control board includes the switch mode power supply circuits to generate the
necessary 5V supply to all the logic circuits throughout the ETM's electronics.
The board generates the 12V required for the infra-red electronics and the 24V
switched for the thermal printer. The board also provides an RS485 output for
interfacing with Internal GPS. The various voltages are generated from the
24V input to the board at the main input socket (PLA), which is a component
of the control board. In the event of a power failure the rechargeable lithium
backup battery (marked BT1 on the control board) maintains power to the real
time clock and memory components.
A 3A polyswitch fuse protects the input supply to the circuit board.
The microprocessor is an Intel 386EX 132-pin device with a clock speed of
66MHz. The timing crystal provides the appropriate timing pulses to regulate
the device.
•Keyboard PCB
The keyboard PCB is a component of the keyboard and display assembly and
is mounted on the back of that assembly. The board consists of a series of
LED’s to provide key illumination and a switch matrix that consists of tracking
shaped in concentric circles that are shorted together when the actual switch
button is pressed. A buzzer is also mounted on the board, although its
actuating circuitry is located on the control board. The keyboard is connected
to the control board via PLEXT1 on the control board.
The display is a non-repairable item whose electronics are supplied as an
integral part of the display assembly.

Publication Number 53719. Issue 3, April 2012
SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM Page 13
•Serial Number PCB
This board, fitted in the lower cover, provides a means of electronically
providing a serial number for the ETM. This serial number is included in any
data that is transferred via PLP on the control board to the memory module.
•Repeater Display Board
The display is a non-repairable item whose electronics are supplied as an
integral part of the display assembly. The PCB fits to the underside of the
contactless reader assembly moulding.
•Type A/B-2 Antenna Board
The antenna board is secured to a mounting plate underneath the ITSO
contactless reader assembly moulding. The antenna board circuitry senses the
presence of an ITSO smart card and reads the data on it. The data is then
passed to the Type A/B-2 Coupler PCB via the coaxial RF cable assembly.
•Memory Expansion & Internal Serial PCB
The expansion board contains up to 4Mbyte of extra RAM and the serial
interface for the Internal RLAN.
This board is plugged directly into the Control board via two multi-pin PCB
connectors (PLX and PLY).
•Type A/B-2 Coupler Board
This board processes the RF signals and interfaces to the control board.
This board is plugged directly into the Memory Expansion & Internal Serial
PCB (PLX and PLY).
•RLAN PIC Controller PCB
This board is linked to the Memory Expansion & Internal Serial PCB via
ribbon cable. It processes the RF signals into the correct format for serial
transmission.

Publication Number 53719. Issue 3, April 2012
Page 14 SERVICE MANUAL FOR THE 13754 TGX150 INTERNAL RLAN TYPE A/B SC ETM
•RLAN Module
The 802.11b Radio Module transmits (to) and receives data (from) the Access
point in the depot. The frequency band of RF transmission is 2.4 Ghz.
•Tray Serial Number PCB
This board, fitted in the tray, provides a means of electronically providing a
serial number for the tray. This serial number is included in any data that is
transferred via PLA on the control board to the memory module.