Squirrel Systems Squirrel Workstation 8, SQ-2020 Operator's And Service Manual
Squirrel Workstation 8
SQ-2020
Operator and Service
Manual
Revision 1.0
Preliminary Release
Caution: Changes or modifications to this equipment, not expressly approved by the
manufacturer could void the user’s authority to operate the equipment.
Information in this document is subject to change without
notice. No part of this document may be reproduced or
transmitted in any form or by any means, electronic or
mechanical, for any purpose, without the express written
permission of Squirrel Systems.
© 2003 Squirrel Systems. All rights reserved.
Squirrel Workstation 8
Records of Revision
Date
Reference:
Page,
Paragraph,
Revision
No.
Comments
Check
and
Approval
Drawing No.
Mar 31/05 Rev 1.0 Initial Release D. O’Brien
TABLE OF CONTENTS
CHAPTER 1: GENERAL INFORMATION................................... 1-1
INTRODUCTION............................................................................................ 1-1
SPECIFICATIONS ......................................................................................... 1-2
ACCESSORIES ............................................................................................. 1-4
WORKSTATION 8 DIMENSIONS ................................................................. 1-5
PRODUCT DESCRIPTION............................................................................ 1-7
CHAPTER 2: DISASSEMBLY and ASSEMBLY........................ 2-1
General Servicing Precautions................................................................... 2-1
Service Equipment and Parts List.............................................................. 2-1
Removing the Front Cover......................................................................... 2-5
Replacing the Front Cover ......................................................................... 2-7
Removing the Mag Swipe Reader.............................................................. 2-7
Removing the ISIS Badge Reader (Optical Reader) ................................. 2-8
Removing the ‘DG41 LCD Assembly (Mounting Bracket) from the Rear
Internal Shield Assembly
Disassembly of the ‘DG41 LCD Assembly...............................................2-13
Removing the Touch Screen Sensor (Overlay) ............................. 2-13
Reassembling/Replacing the Touch Screen Sensor (Overlay) ..... 2-14
Removing the ‘DG41 LCD from the LCD Mounting Bracket.......... 2-14
Disconnecting the LCD Data Cable ............................................... 2-16
Removing the Open Frame Inverter...............................................2-16
Reassembly.................................................................................... 2-17
Base Bottom Disassembly ....................................................................... 2-18
Disconnecting the Power Switch Cable from the Motherboard ..... 2-18
Disassembly of the Internal Shield Assembly ................................ 2-19
Removing the Motherboard from the Internal Shield Housing2-21
Resetting CMOS for Squirrel Defaults ................................... 2-22
Removing the Card Guide Rails............................................. 2-23
TABLE OF CONTENTS
.......................................................................... 2-11
Removing the Internal Shield Assembly out of the Base Bottom
Plastics
Removing the Power Switch Cable and the Power Switch....2-19
Removing the Intake Fan....................................................... 2-20
................................................................................... 2-19
CHAPTER 3: INSTALLATION ................................................... 3-1
I Preliminary Release 3/24/05/R1.0
GENERAL GUIDELINES............................................................................... 3-1
ELECTRICAL POWER REQUIREMENTS.................................................... 3-2
LOCATION AND MOUNTING POSITIONS .................................................. 3-2
TABLE OF CONTENTS
PROPER INSTALLATION OF MOUNTING HARDWARE............................3-3
Tilt Stand (92-205) Installation....................................................................3-3
Adjusting the Tilt Stand...............................................................................3-6
Mounting the Workstation 8 to a Wall Bracket (92-207).............................3-8
Wall Mount........................................................................................3-8
Counter Sunk Mount.........................................................................3-9
HOST/SERVER COMMUNICATION PROTOCOL........................................3-9
ISIS BADGE READER CONFIGURATION .................................................3-10
CABLE LOCATION LABEL - I/O INTERFACE..........................................3-10
TYPICAL WORKSTATION & PERIPHERAL SETUP.................................3-12
FINAL TESTING OF THE INSTALLATION.................................................3-13
Powering it On...........................................................................................3-13
Screen Contrast........................................................................................3-14
Volume Control .........................................................................................3-14
CHAPTER 4: MAINTENANCE....................................................4-1
CARING FOR THE WORKSTATION 8..........................................................4-1
General Cleaning........................................................................................4-1
Cleaning the Credit Card Reader ...............................................................4-2
CHAPTER 5: TROUBLESHOOTING .........................................5-1
CHAPTER 6: APPENDICES.......................................................6-1
APPENDIX A: ESD WORK-STATION...........................................................6-1
Maximum Allowable Resistances and Discharge Times for Static Safe
Operations
ESD Work-station Do’s and Don’ts.............................................................6-2
Prime Sources of Static Electricity in an Electronics Work Area................6-3
Field Service - ESD Prevention ..................................................................6-4
Field Service Kit..........................................................................................6-4
APPENDIX B: LCD HANDLING ....................................................................6-5
ESD Protection............................................................................................6-5
Mechanical Force and Strength..................................................................6-5
Handling the LCD........................................................................................6-5
Cleaning......................................................................................................6-6
Storage........................................................................................................6-6
Ingestion and Injury Warning......................................................................6-7
..............................................................................................6-2
APPENDIX C: HANDLING CIRCUIT BOARDS ............................................6-8
APPENDIX D: PORT SIGNAL PIN ASSIGNMENT.......................................6-9
II Preliminary Release 3/24/05
TABLE OF CONTENTS
APPENDIX E: TOUCHSCREEN SENSOR ................................................. 6-10
Cleaning ................................................................................................... 6-10
Specifications ........................................................................................... 6-10
APPENDIX F: MOTHERBOARD PREPARATION ..................................... 6-12
Foil Taping the Rear Shield Casing (89-541)...........................................6-13
Foil Tape Specifications........................................................................... 6-14
APPENDIX G: ............................................................................................ 6-15
Connector Descriptions............................................................................ 6-15
Jumper Descriptions................................................................................. 6-16
Jumper Settings Information .................................................................... 6-17
APPENDIX H: BUTTERFLY SHIELD SCREW.......................................... 6-21
APPENDIX I: LCD BRACKET PREPARATION FOR MOUNTING THE
LQ121S1DG41 DISPLAY
............................................................................ 6-22
3/24/05 Preliminary Release III
CHAPTER 1: GENERAL INFORMATION
The General Information Chapter includes three sections:
• Introduction
• Specifications
• Accessories
• Product Dimensions
• Product Description
GENERAL INFORMATION
INTRODUCTION
This publication is intended to provide technical support information for Squirrel
systems installers, field service technicians and depot service technicians.
Information in this manual includes:
• Specifications for electrical power requirements and interface
installation.
• Installation guidelines for mounting hardware and procedures pertaining
to the Wall Bracket and Tilt Stand
• Assembly and disassembly procedures.
cable
Only authorized SQUIRREL personnel with proper training and equipment such as
Anti-static Kits should attempt the disassembly procedures described in this manual.
1-1 R1.0 Preliminary Release 3/24/05
• Configuration and adjustment of communication protocol, display
attributes and other features.
• Troubleshooting and repair procedures.
SPECIFICATIONS
GENERAL INFORMATION
Standard SBC
Functions
PROCESSOR
BIOS
SYSTEM CHIPSET
SECOND LEVEL OF CACHE
RAM
PARALLEL PORT
SERIAL PORTS
Intel Celeron 850 MHz or Pentium 3 up
to 1GHz
- Socket 370
- Standard Award® PC 256 KB Flash
BIOS
- Includes ETHERNET LINUX boot
ROM
VIA VT82C694/VT82C686
On-board 512KB
- two 168 - pin DIMM sockets
(supports up to 512MB SDRAM)
- One parallel port (LPT2)
onboard/internal access, supporting
SPP/EPP/ECP/ parallel mode.
- COM 1 & 2 External
RJ11: RS-232
- COM 4 External
RJ11: RS232 & supports +5V
power
Ethernet Interface
KEYBOARD CONNECTOR
PS/2 MOUSE CONNECTOR
VIDEO CONNECTOR
WATCHDOG TIMER
USB
CHIP
ETHERNET INTERFACE
- COM 1,2 & 3 Onboard
2x5 Header: RS-232
Mini-DIN keyboard connector
PS/2 mouse – onboard/internal access
Internal shrouded header to support a
CRT monitor
Software enable/disable. Time interval of
1.6 seconds generates system reset in
the event of program failure
Two onboard/internal access USB1.1
RTL8139C
10/100 BASE-T/TX, RJ45
1-2 Preliminary Release 3/24/05
GENERAL INFORMATION
Flat Panel / PCI
SVGA Interface:
Touchscreen
Interface
Cash Drawer
Interface:
Peripherals Devices
Software
Compatibility
CHIPSET
DISPLAY MEMORY
DISPLAY TYPE
C & T 69000
- 2 MB integrated memory
2 MB on-board memory
- 12.1” Color TFT – Hi Brightness LCD
- Resolution: 800x600
OVERLAY
5 Wire 12.1” ELO-Touch Analogue
Resistive overlay
CASHDRAWERS
Supports 2 cash drawers.
(RJ11 connector)
MAGNETIC SWIPE
SOFTWARE POS SquirrelOne
Bi-directional read Track 1 & Track 2
External Power
Supply Adaptor
INPUT REQUIREMENTS
OUTPUT REQUIREMENTS
POWER CORD LENGTHS
SIZE (DIMENSIONS)
- 100 VAC – 240 VAC
- 50-60 Hz (International)
- UL and CE
- +12V, DC @ 5.5 Amps
- maximum power rating: 60 WATTS
CONT.
- input approx.: 40” (1016mm)
- output approx.: 72” (1830mm)
- L x W x D:
132”(5.20mm)x58”(2.29mm)x
30”(1.18mm)
- Weight: 0.66 lbs (300g)
3/24/05 Preliminary Release 1-3
Mechanical and
Environmental
OPERATING TEMPERATURE
OPERATING HUMIDITY
GENERAL INFORMATION
50° to 105.8° F (10° to 40° C)
5% to 95% relative humidity
ACCESSORIES
WEIGHT
ETHERNET CABLE
CHECK PRINTER COMMUNICATION
CABLE
EXTERNAL POWER SUPPLY WITH
POWER CORD
CASH DRAWER CABLE
CUSTOMER DISPLAY TOWER CABLE
ADJUSTABLE TILT STAND
MAG SWIPE (CREDIT CARD
READER)
12.47 lbs (5.64 kg) WS on stand
7.10 lbs (3.22 kg) WS only
Standard
Standard
Standard
Optional
Optional
Standard
Optional
1-4 Preliminary Release 3/24/05
WORKSTATION 8 DIMENSIONS
GENERAL INFORMATION
3/24/05 Preliminary Release 1-5
Side Dimensions
GENERAL INFORMATION
External Power Supply Dimensions
1-6 Preliminary Release 3/24/05
Product Description
Air Exhaust
Area
GENERAL INFORMATION
Touchscreen
Power Switch
Keyboard Port
Internal Intake
Fan Vents
Optical ID Reader
Badge Card Slot
Magswipe
Reader/Slot
Adjustable Stand
and Backplate
3/24/05 Preliminary Release 1-7
Serial Number
Label
Workstation’s Ethernet
MAC Address
Sales & Service
Label
GENERAL INFORMATION
6 5 4 3 2 1
1. Power Jack – AC/DC Power Supply Adaptor is connected here.
2. Ethernet Port – 10/100 Base – T/TX, RJ45 Jack for SquirrelOne Network
Connection.
3. COM 4 – RJ12 Interface Jack configured for default Customer Display
Tower.
4. Cashdrawer Port – RJ12 Jack provides Dual Cashdrawer Output.
5. COM 2 – RJ12 Interface Jack configured for default POS printer.
6. COM 1 – RJ12 Interface Jack configured for default POS printer.
Refer to Appendix D for port signal pin assignment.
Wall Mounting Bracket Slots
Cable Location Label
Stand Back
Plate Mounting
Holes
1-8 Preliminary Release 3/24/05
DISASSEMBLY AND ASSEMBLY
CHAPTER 2: DISASSEMBLY AND ASSEMBLY
General Servicing Precautions
The following are general precautions that should be taken by technicians when
servicing the Workstation 8 product. Please refer to APPENDICES at the back of
the manual for a detailed explanation.
• A safe EDS protected work area is required to service the
Workstation 8 product to prevent damage to sensitive
components from static discharge. Refer to APPENDIX A.
• Extra care needs to be exercised when handling and cleaning
the LCD to prevent any damage. Refer to APPENDIX B.
• Circuit boards need to be handled and stored with care to
prevent any ESD damage. Refer to APPENDIX C.
• Opening & Closing – all cabling needs to be arranged so that
they will not be pinched or interfere when you open and close
the workstation case for servicing.
Service Equipment and Parts List
The following equipment is required to service the WORKSTATION 8 according
to this manual:
• Anti-static mat with ground-wire and wrist strap – safe ESD work
area
• Side cutters
• #1 and #2 Phillips screwdrivers
• Multimeter
• Magnetic head cleaning card (SQ-2940 pkg of 10
pkg of 50)
• Scissors
Disassembly Instructions
When disassembling the workstation make sure the workstation is turned off and
disconnected from all cabling and peripherals.
OR SQ-2941
3/24/05 R1.0 Preliminary Release 2-1
DISASSEMBLY AND ASSEMBLY
Reassembly Instructions
Reassembling is the reverse of the disassembly process. Use care to ensure
that all cables and screws are returned to their proper positions. Check that no
loose parts have been left inside and everything is properly installed and
tightened.
A list of modules and/or their sub-assemblies:
Module / Sub-Assembly
Workstation 8 for SquirrelOne with Power Supply and
Stand
Workstation 8 for SquirrelOne with Power Supply and no
Stand
Workstation 8 for SquirrelOne without Power Supply and
Stand
AC / DC Power Supply (no AC cable)
AC Power Supply Cord
Touchscreen Overlay/Sensor
LCD Assembly (LQ121S1DG41 LCD) & Shield Top
Note: Primarily for field servicing
ISIS Badge Reader Kit
Magswipe Reader
Part Number
SQ-2020
SQ-2021
92-800
31-038
78-010
SQ-2523
92-241
SQ-2899C
SQ-2902
Motherboard – SBC
Comes with 64M RAM
Table 2.1 Module / Sub-Assembly Parts List
2-2 Preliminary Release 3/24/05
SQ-6593
DISASSEMBLY AND ASSEMBLY
Various cables, screws and miscellaneous parts
Part Description Part Number
Cable RJ12 to RJ12 Interface
Use: COM1
COM2
COM4
Cable CATS Ethernet Patch
Use: SquirrelOne
Cable RJ12 to RJ45 Printer Interface
Use: COM2
Cable Cash Drawer
Use: DRW
Dual Cash Drawer Adaptor
Plastic Split Tubing (per foot)
#6-32 X 1” Pan Head Phillips Screw
Front to back housing
#4 Star Washer
For LCD mounting and motherboard
Screw #4-40 x ¼
- LCD to mounting bracket
- Motherboard to rear shield
- Inverter to LCD mounting bracket
SQ-7035
SQ-7706
SQ-7345
SQ-7175
95-026
77-040
82-009
83-003
82-004
Screw #4 x ¼
For card guide rails
Screw #4 x 3/8
To secure magswipe reader
Display Backplate
Rear Internal Shield
LCD Data Cable
LCD Back Light Cable
82-068
82-067
89-540
89-541
76-245
76-208
Table 2.2 Miscellaneous Parts List
3/24/05 Preliminary Release 2-3
DISASSEMBLY AND ASSEMBLY
Power Switch
74-020
Power Switch Cable
Plastic Card Guide
Black Cable Tie
Fan
ISIS Cable
Adjustable Stand with Weight Assy
Base
Back Plate
Wall Mount Bracket
Rear Workstation 8 Plastic Housing
Top Workstation 8 Plastic Cover
WS8 High Touch Strip
ISIS Badge Rdr Kit
76-338
99-608
86-015
91-070
76-301
92-205
92-195
99-604
92-207
99-618
99-622
99-623
SQ-2899C
#6-32x1/2” Phil Black Screw
For Fan to Rear Shield
82-608
Table 2.2 Miscellaneous Parts List
2-4 Preliminary Release 3/24/05
DISASSEMBLY AND ASSEMBLY
Removing the Front
Cover
To remove the Front Cover:
This procedure requires a #2 Phillips screwdriver.
1. Place the WORKSTATION 8’s front of the unit face down on the
anti-static mat. Ensure that the mat is clean of debris that could
scratch or damage the workstation.
2. Remove all 10 screws that secure the front cover to the bottom
housing as shown in the picture below.
3. Carefully hold the front and rear housing together and turn the
unit over right side up.
4. Carefully lift off the front cover to expose the internal
assemblies.
3/24/05 Preliminary Release 2-5
DISASSEMBLY AND ASSEMBLY
Front/Top Cover Front/Top Cover
Front View Back View
LCD Optical ID Reader
(Isis Badge Reader)
Base Bottom Housing Sensor/Overlay LCD Mounting
Bracket
Spray coated with
copper loaded paint for
EMI/RFI shielding
Magswipe
Reader
Power Switch
2-6 Preliminary Release 3/24/05
DISASSEMBLY AND ASSEMBLY
(
)
Replacing the Front
Cover
Badge Card Slot
Magswipe Card Slot
In the event the top cover is damaged and is required to be replaced, it should
be noted that the top cover consists of the following: Top cover plastic, RF
Gasket Strips and the Touch Strip located in front of the cover.
Front/Top Plastic Cover 10.25” RF Gasket Strip (2 pcs)
(99-622) (88-053-1)
Touch strip
(on front side)
(99-623)
7.35” RF Gasket Strip
(2 pcs)
88-053-2
Backside View
When ordering, all 3 items need to be ordered at the same time. The gasket
and Touch Strip are not reusable. When installing the gasket, DO NOT stretch
the gasket during application.
Reassembling the top cover to the bottom housing is the reverse of the
disassembly process. When the top cover is fitted over the bottom housing,
make sure the Badge Reader’s Card Guides fit into place in the Badge Card
Slot located in the Font Cover.
Removing the
Magswipe Reader
1. To remove the Magswipe Reader a #1 Phillips screwdriver is
required.
2. When disconnecting the interface cable from the ISIS
Detector board, attention should be paid as to how the
connector is oriented and connected to the right angle
connector on the detector board.
3/24/05 Preliminary Release 2-7
DISASSEMBLY AND ASSEMBLY
ISIS Detector PCB
ISIS Emitter PCB
2. Disconnect
Red Wire
1. Remove Screw
Magswipe Reader
Interface Cable
Removing the ISIS
Badge Reader
(Optical Reader)
NOTE
1. Without touching the emitter (emitting diode) and detector
(phototransistor) components (these will either be gold or
silver), carefully grasp the top edges of the emitter and
detector boards and gently slide them (together) upwards
and out of the card guides.
Care should be taken when handling these boards as the emitter &
detector components have been aligned for optimal performance.
Accidentally shifting these components can cause the reader to not read
the badge cards.
2-8 Preliminary Release 3/24/05
DISASSEMBLY AND ASSEMBLY
Removing the ISIS Reader
NOTE
2. Both the detector & emitter boards need to be disconnected
from the ribbon cable. Always handle these boards by
holding their edges and avoiding touching the components
and circuitry.
The ribbon cable can only be disconnected from the Motherboard after the
LCD Mounting Bracket is disassembled from the Internal Shield Housing.
Pin 1
Red wire
Pin 1
Replacing these boards is the reverse of removing and care should be
exercised when reconnecting and reinserting into the card guides. The
red wire of the ribbon cable connects to Pin 1 on both P1 connectors of
both boards. Both cards need to be slid down the card guide rails
completely and should be seated properly.
3/24/05 Preliminary Release 2-9
DISASSEMBLY AND ASSEMBLY
3. Ensure that each green LED on the ISIS Badge Reader
PCBs are properly aligned with the card guide lightpipes as
shown below. The LED should not touch the card guide but
should be about 1/16” (1 mm) away.
Card
Guide/Lightpipe
1/16” Green LED
(1 mm)
ISIS PCB
Badge Reader LEDs
If the LED is not properly positioned or the lightpipe is dim and uneven the LED
can be carefully bent into a better position, ensuring that the LED does not
touch the card guide.
In the event the workstation being serviced does not have a Magswipe
Reader, the ISIS detector board will have a jumper installed on the right angle
connector located at the back of the board as shown below.
Jumper
Pin 1
ISIS Detector PCB
2-10 Preliminary Release 3/24/05
Detector PCB Jumper Setting
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