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Workstation 4 and 4 LX Field Service Guide

3-15

WS4 Troubleshooting

LCD Display Related

•

ROHS Inverter Board XBRB33, GR 2.0 Platform Files and Samsung LCD
mis-match. This can occur if the XBRB33 inverter board is installed on a unit
with the Samsung LCD and the GR 2.0 platform files.

The ROHS compliant version of the Backlight Inverter Board (XBRB33) has
the same MICROS P/N as the previous board (XB33), but uses a new
transformer with different operating characteristics.

The combination of the XBRB33 inverter board, Samsung LCD and GR2.0
software platform exhibit low backlight levels, primarily at the DIM and
NORMAL settings. Try the following:

•

Use an older backlight inverter (XB33) board if possible.

•

Upgrade the WS4 to GR 2.1.

•

Delete, rename, or modify the \DOC\HWInf\ddi_gx_sharp.inf file.

The ddi_gx_sharp.inf text file is read by the PCWS API (UWS4.DLL) at
start-up to adjust backlight PWM values on a system with the Sharp LCD.
When this file is present on a WS4 with a Samsung LCD and the new ROHS
backlight inverter board, the LCD backlights will be very dim as previously
mentioned. If you delete or rename this file, the WS4 API will not find it and
will automatically use a higher correction value.

•

Disconnected backlight tube(s) or bent pins on the inverter connector(s).

•

Defective backlight tube(s).

LCD Quality Problems

Symptoms: An image appears on the LCD, but it exhibits a loss of horizontal or
vertical sync, tearing and or fuzzy text.

•

Loose connection between the display cable and LVDS Receiver Board on units
equipped with the Samsung LCD.

•

Loose connection between the LVDS Receiver Board and the Samsung LCD
panel.

•

Loose connection between the display cable and the system board including loose
or missing ground lug connection at the system board on cables so equipped.
Cables used on the AB28-I System Board or later, do not include the ground lug.

Solid Vertical Lines on LCD

Symptoms: The LCD exhibits a few solid vertical lines across the entire screen.

•

Defective LCD Panel.

•

Loose connection between display cable and the LVDS Receiver Board on units
equipped with the Samsung LCD.

•

Loose connection between the LVDS Receiver Board and the Samsung LCD
panel.

•

Loose connection between the display cable and the system board including loose
or missing ground connection at the System board.

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Summary of Contents for Workstation 4

Page 1: ...micros Systems Inc Workstation 4 and Workstation 4 LX Field Service Guide Copyright 2004 2008 By MICROS Systems Inc Columbia Maryland USA All Rights Reserved Part Number 100016 118 4th Edition ...

Page 2: ... Trademarks MICROS is a registered trademark of MICROS Systems Inc Microsoft MS DOS Windows Windows 95 and Windows CE are registered trademarks of Microsoft Corporation in the U S and other countries AMD the AMD logo and combinations thereof are trademarks of Advanced Micro Devices Inc General Software the GS Logo Embedded BIOS CE Ready the CE Ready logo and Firmbase are trademarks or registered t...

Page 3: ...D Display REV F G 1 13 Cable Sharp LCD Display REV I 1 14 Cable Inverter F G BD WS4 1 14 Cable Inverter to REV I BD WS4 or WS4 LX 1 15 Touchscreen Extension Cable 1 15 Cable Kit Power In Power Out AC Conn 1 16 Toroid Kit Display MSR and AC Power 1 16 AC Power Input Cable 1 17 Workstation 4 and 4 LX LCD Touchscreen Mag Stripe Reader 1 18 Samsung LCD Related 1 18 Sharp LCD Related 1 20 Touchscreen a...

Page 4: ...hscreen Interface 2 20 Optional PCMCIA Daughter Card 2 21 Optional Mini PCI Daughter Card 2 22 Complex Programmable Logic Device CPLD 2 23 CPU Interface and Register Control 2 23 Power Button AB28 System Boards 2 25 Power Button ABRD36 System Board 2 26 Reset Circuit 2 28 Wake On LAN Power Management Event 2 29 LCD Backlight Control 2 30 Cash Drawer Interface 2 31 System Board Hardware Revision 2 ...

Page 5: ...Voltage Regulators 3 8 POST Errors 3 11 LCD Display Related 3 14 Touchscreen Related 3 16 Local Area Network LAN Related 3 18 Mechanical Related 3 21 Peripheral Related 3 22 IDN Port Problems 3 22 RS232 Peripheral Device Does Not Function 3 22 USB Peripherals Do Not Function 3 23 VFD Pole Display 3 23 LCD Customer Display 3 24 Workstation Recovery Procedures 3 26 Formatting the CF Card 3 26 Using ...

Page 6: ... Interface ABRD86 Sheet 18 4 9 W83627HF Super IO 4 10 Low Pin Count Interface 4 10 Serial Interface 4 10 RS422 Port A and B Control Signals 4 11 COM3 Mux Control Signals 4 11 Hardware Monitor 4 11 Cash Drawer Control 4 11 System Board Hardware Revision 4 11 TFT LCD and Backlight Interface 4 12 The Graphics Processor GP 4 12 The Display Controller DC 4 13 Video Processor VP 4 13 LCD Interface 4 14 ...

Page 7: ...ications Background 5 7 Platform Updates Background 5 8 Testing the WS4 LX Power Supply and System Board Voltages 5 9 Standby Voltage Checks 5 9 Working Voltage Checks 5 10 Power On Self Test POST Errors 5 11 LCD Display Related 5 13 Touchscreen Related 5 15 Local Area Network Related 5 16 Mechanical Related 5 18 Peripheral Related 5 19 Workstation 4 LX Diagnostics Utility 5 22 System Information ...

Page 8: ...6 25 Reassembling the RF Shield 6 26 LCD Customer Display 6 30 Connector and Cable Diagrams IO Panel Connectors A 2 RS422 A COM4 and RS422 B COM5 A 2 IDN A 2 LCC A 3 RS232 A 3 10 100 Ethernet Connector A 4 RS232 Connector A 4 Cash Drawer 1 and 2 Connectors A 5 PS2 Mouse Keyboard Connectors WS4 Only A 5 Pole Customer Display Connector A 6 System Board Connectors A 7 Magnetic Stripe Interface A 7 US...

Page 9: ... this preface you ll find information about this manual Refer to the preface if you have questions about the organization conventions or contents of this manual In this section Why Read This Manual ix How This Manual Is Organized xi Notation Conventions xii ...

Page 10: ...criptions contained in this manual are intended to give the technician a working knowledge of the hardware to be used as an aid in the troubleshooting and repair of the equipment Bibliography Workstation 4 AMD Geode SC3200 Processor Data Book November 2004 AMD Geode SC3200 Processor Specification Update DiskOnChip Millennium Plus Data Sheet Rev 1 7 National Semiconductor Corporation PC87360 Super ...

Page 11: ... off with a detailed start up description provides voltage test points for the internal power supply and system board voltage regulators Much of the troubleshooting information contained in this chapter is compiled from the experience of the technicians at the MICROS Board Repair Center Chapter 4 provides technical descriptions of the Workstation 4 LX System Board ABRD86 with emphasis on the IDN a...

Page 12: ...ing Paint Shop Pro 8 0 Corel Draw 7 0 NOTE This symbol brings special attention to a related item WARNING This symbol indicates that specific handling instructions or procedures are required to prevent damage to the hardware or loss of data SHOCK HAZARD This symbol calls attention to a potential hazard that requires correct procedures in order to avoid personal injury STATIC SENSITIVE DEVICES This...

Page 13: ...n of the Workstation 4 LX a new section on how to distinguish each system board has been added In this chapter Introduction 1 2 Base Casework WS4 and WS4LX 1 3 System Boards and Components 1 5 Workstation 4 System Board and Components 1 8 Workstation 4 LX System Board and Components 1 10 Cables and Toroids 1 12 Workstation 4 and 4 LX LCD Touchscreen Mag Stripe Reader 1 18 LCD Customer Display 1 23...

Page 14: ...minimum each system board is referred to by a model number designation Workstation 4 System Board and Components This section includes the original Workstation 4 System Board and major components including a bare system board Power Supply CF Daughter Card Boot Loader Disk On Chip DIMM and CF card WS4 LX System Board and Components This section includes the WS4 LX System Board System Board Power Su...

Page 15: ...4 WS4 LX FRUs Base Casework WS4 and WS4LX Base Casework WS4 and WS4LX Figure 1 1 shows the spare parts related to the WS4 or WS4 LX workstation base Includes plastic sheet metal hardware and miscellaneous components Figure 1 1 WS4 WS4LX Base Casework Related Spare Parts ...

Page 16: ...ardware kit P N 000156 101 Workstation Base P N 400408 003 This base can be used for the AB28 I ABRD36 and ABRD86 System Boards Includes pre installed power button actuator Does not include sheet metal or hardware Use with Hardware and Miscellaneous Plastic Kit 000156 101 Door Hinge Rear P N 300323 102 Compatible with all Workstation 4 and 4LX units Door Rear P N 400410 103 The Rear Door covers th...

Page 17: ...ith the AB28 Series including AB28 F AB28 G and AB28 I Figure 1 2 displays the AB28 I System Board the most numerous example of the AB28 series and points out the location of the model number Figure 1 2 The AB28 Series Workstation 4 System Board The transition from AB28 F G to AB28 I system boards combined with the change from a Samsung LCD to a Sharp LCD forced changes in the LCD and backlight ca...

Page 18: ...D36 B board is equivalent to the AB28 I board using the same interface cables CF Card DIMM Boot Loader and Disk On Chip Platform software GR2 2 or GR2 3a if the LG61 LCD is used is required Figure 1 3 displays a sample of this board and the model number location Figure 1 3 The ABRD36 B or Rev K Workstation 4 System Board The board pictured above does not include a processor heat sink but the first...

Page 19: ...it that benchmarks up to three times faster than the original WS4 with a MICROS POS application Figure 1 4 displays a sample of the ABRD86 D System Board and model number location Figure 1 4 The Workstation 4 LX System Board ABRD86 Highlighted Changes Blue Operator LED distinguishes the WS4 LX from the original WS4 Disk On Chip replaced with USB based flash drive The PCMCIA Socket is replaced by t...

Page 20: ...Chip Battery CF Daughter Card and Processor heatsink The ROHS compliant WS4 system board designated ABRD36 B Revision B is the current replacement board for the original WS4 Physically the ABRD36 system board is a drop in replacement for the AB28 I system board using the same interface cables DOC boot loader CF card and DIMMs If this board replaces the AB28 F or AB28 G system boards see Chapter 6 ...

Page 21: ...ash Memory Device contains workstation 4 boot loader Installs in socket U24 Compatible with AB28 and ABRD36 System Boards Not compatible with the ABRD86 WS4 LX System board Cable Rear LCD Customer Integrated P N 400446 007 This cable connects to J1 on the system board and attaches to the cable from the optional Integrated LCD Customer Display See page 1 24 for more LCD Customer Display cables Can ...

Page 22: ...Flash Drive CMOS battery or CF Daughter Card As discussed in the previous section the ABRD86 System Board is not a direct replacement for the original Workstation 4 system boards AB28 or ABRD36 USB Flash Drive 256M Pre Programmed WS4 LX P N 700901 005 256M USB Flash Drive is pre loaded with the Windows Embedded CE 6 0 operating system platform files and utilities Installs on system board header J5...

Page 23: ...intec WD1UN256X808 333B QC RA and Unigen UG732D6688KK DHFMSE Not compatible with AB28 and ABRD36 System Boards Cable Rear LCD Customer Integrated P N 400446 007 This cable is pre installed on all Workstation 4 LX System Boards It attaches between J1 on the System Board to the optional Integrated LCD Customer Display Compatible with the WS4 and KWS4 Battery P N 7000043 005 CR2032 3V Lithium Coin Ce...

Page 24: ...36 B system boards The table below summarizes the LCD and backlight cable part numbers based on the system board type revision and the Samsung or Sharp CD panels Each cable is listed individually in the following pages Cable Assembly LCD Display REV F G BD WS4 P N 300331 204 The cable shown in Figure 1 7 connects between the EOL Samsung LCD LVDS Board and system boards AB28 F and AB28 G This cable...

Page 25: ...rd AB28 I This cable is not compatible with a Sharp LCD and system boards AB28 F and AB28 G Figure 1 8 Samsung LCD Cable for AB28 I or ARBD36 System Boards Cable Sharp LCD Display REV F G BD WS4 P N 300331 202 The cable shown in Figure 1 9 connects a Sharp LCD to older system boards AB28 F and AB28 G This cable is not compatible with the Samsung LCD the AB28 I ABRD36 and ABRD86 system boards Figur...

Page 26: ...d AB28 I ABRD36 and ABRD86 Not compatible with Samsung LCDs and the AB28 F G System Boards Figure 1 10 Sharp LCD Cable for AB28 I and later System Boards Cable Inverter F G BD WS4 P N 300331 103 The cable shown in Figure 1 11 connects between the backlight inverter board and system boards AB28 F and AB28 G only Not compatible with AB28 I ABRD36 and ABRD86 system boards Figure 1 11 Inverter Cable f...

Page 27: ...6 and ABRD86 This cable is not compatible with WS4 System Boards AB28 F and AB28 G Figure 1 12 Inverter Cable for WS4 Rev I ROHS and WS4 LX System Boards Touchscreen Extension Cable P N 300331 350 This cable connects between the system board and the touchscreen ribbon cable The cable shown in the illustration below is an improved version of the original extension cable and is compatible with all W...

Page 28: ...does not include a toroid It is part of toroid kit P N 700791 001 below Both cables are compatible with all WS4s including the WS4 LX Figure 1 14 WS4 and WS4 LX AC Input and Power Supply Cable Kit Toroid Kit Display MSR and AC Power P N 700791 001 Kit of three toroids One each for the LCD interface cable mag stripe reader cable and AC Power In cable assembly WS4s that use the AB28 I ABRD36 or ABRD...

Page 29: ...X Field Service Guide 1 17 Introduction to the WS4 WS4 LX FRUs Cables and Toroids AC Power Input Cable P N 200153 001 Replacement AC Power Cable for Workstation 4 and Workstation 4 LX Figure 1 16 Replacement AC Power Cable ...

Page 30: ...listed below While the Samsung LCD panel itself is no longer available the components shown in Figure 1 17 are available Figure 1 17 Samsung LCD Related Spares LCD Conversion Kit P N 000160 100 The kit consists of a Sharp LQ121S1LG41 or LG61 Panel LCD mounting bracket and interface cable MD0011 003 included in the kit provides installation instructions Samsung LCD Mounting Bracket P N 400365 002 T...

Page 31: ... inverter is the same MICROS P N as the previous board but includes a new transformer that operates at a higher frequency This board can be identified by the model number XBRB33 silk screened near the input connector J1 The increased operating frequency of the inverter circuit is optimized for the Sharp LG41 and later the LG61 LCD and results in diminished backlight brightness if used with the EOL...

Page 32: ...equired Sharp LCD Bracket P N 300264 301 This bracket is unique to the Sharp LQ121S1LG41 or LG61 TFT LCD Panel Backlight Inverter Board P N 700633 005 This board attaches to the LCD bracket and powers the LCD backlight tubes Two versions of the backlight inverter board now exist The ROHS compliant version of the backlight inverter introduced at the same time as the ABRD36 system board uses the sam...

Page 33: ...tible with the WS4 and WS4 LX Figure 1 19 WS4 and WS4 LX Touchscreen and Top Cover Touchscreen Glass P N 400386 011 EloTouch Systems 5 wire resistive touchscreen glass Touchscreen Gasket P N 600537 127 The touchscreen gasket fits in a groove in the top cover The same gasket is used in the PCWS Eclipse and 2010 12 1 LCD Head Top Cover P N 400409 002 The Top Cover Plastic Does not include hardware o...

Page 34: ...r Figure 1 20 Magnetic Stripe Reader FRUs WS4 and WS4 LX Mag Stripe Reader Assembly P N 700293 110 Three track 90mm RS232 compatible reader assembly This is the same reader used by the PCWS Eclipse and 2010 Compatible with the WS4 and WS4 LX System Boards prior to AB28 I and Base P N 400408 002 use a toroid on this cable Mag Stripe Reader Mounting Kit P N 700789 101 The kit consists of the black p...

Page 35: ...is display LCD Interface Board P N 400702 001 The LCD Customer Display Interface Board is used for the Integrated Pole and Adjustable Stand Pole mounted display This board is also drives the Operator Display in the KWS4 Figure 1 21 LCD Customer Display Interface Board LCD Module Optrex P N 700594 117 The 240x64 Monochrome LCD Module is used for the Rear and Pole Mount LCD Customer Display It is al...

Page 36: ...ng to cable 400446 007 Integrated Rear or 300331 250 Pole Figure 1 23 Replacement LCD Customer Display Cable Cable Extension LCD Pole Display P N 300331 250 This cable is installed in the pole and connects between 300331 251 above and the WS4 WS4 LX WS5 or KWS4 I O Panel It is approximately 6 feet 183 cm in length Figure 1 24 Replacement LCD Pole Extension Cable Refer to Figure 1 5 for the P N of ...

Page 37: ...t with Front and Rear Plastic covers pole mount and pre installed 2nd generation hinge assembly Figure 1 25 Pole Display Plastic Replacement Kit Kit Front Rear Cover w Lens Screws Rear Mount Hinge P N 000160 011 LCD Customer Display housing kit with Front and Rear Plastic covers integrated mounting bracket and pre installed 2nd generation hinge assembly Figure 1 26 Rear Display Plastic Replacement...

Page 38: ...1 26 Workstation 4 and 4 LX Field Service Guide Introduction to the WS4 WS4 LX FRUs LCD Customer Display ...

Page 39: ...tem Block Diagrams 2 2 SC3200 GX1 Processor Video Processor Core Logic and Super IO 2 5 PCI and Sub ISA Bus Interface 2 8 SC3200 Super I O 2 11 PC87360 Super IO 2 12 TFT LCD Interface 2 17 Touchscreen Interface 2 20 Optional PCMCIA Daughter Card 2 21 Optional Mini PCI Daughter Card 2 22 Complex Programmable Logic Device CPLD 2 23 DP83815 10 100 Mbps PCI Ethernet Controller 2 32 RS422 Port A and RS...

Page 40: ...er time Figure 2 1 shows the initial configuration of the WS4 with System Board AB28 F G and a Samsung LCD panel Figure 2 1 WS4 Block Diagram w System Boards AB28 F or AB28 G and Samsung LCD Panel Functionally there is very little difference between AB28 F and AB28 G The majority of changes were implemented to improve EMI emissions and lower manufacturing costs The illustration also shows the Sams...

Page 41: ...ange can be found on page 2 38 This configuration consisting of the AB28 I System Board Backlight Inverter Board XB33 and CF Daughter Card XB36 and Sharp LCD were produced between August 2004 and June 2006 The Sharp LCD includes a built in LVDS receiver and does not require the XB34 LVDS Receiver Board The AB28 I System Board uses different LCD and Backlight interfaces cables than the AB28 F and A...

Page 42: ...s compatible with the AB28 I board as a drop in replacement each uses the same LCD and Backlight Inverter cables but it requires the GR2 2 Platform software to function correctly The configuration shown above entered production in approximately June 2006 and continued until the release of the Workstation 4 LX in July 2007 Non ROHS compliant Workstation 4s were also produced during this period Over...

Page 43: ...mber of National Semiconductor Corp WebPad On A Chip family of highly integrated x86 system devices In mid 2003 Advanced Micro Devices AMD purchased the Geode line from National The SC3200 consists of a GX1 processor integrated with a TFT LCD video controller x86 compatible PC core logic block and Super IO component shown in the Figure 2 4 below Features of each section are highlighted in the para...

Page 44: ... 64 Bit SDRAM Interface 66Mhz to 100 Mhz frequency range The Workstation 4 runs at 78Mhz Direct interface to CPU cache display controller and 2D graphics accelerator Supports clock suspend and power down self refresh Up to 8 SDRAM devices or one DIMM SODIM socket Display Controller Hardware graphics frame buffer compress decompress Hardware cursor up to 32 x 32 pixels Video Processor The TFT video...

Page 45: ...T compatible with 8254 DMA Controller DMAC compatible with 8237 Video Input Port Not Implemented on the WS4 Power Management ACPI 1 0 Compliant Sx state control of three power planes Gx Sx state control of clocks and PLLs Wake up event support General Purpose IO GPIO Ports The SC3200 GPIO ports are used for a variety of tasks including IDE bus control signals and RS232 COM1 handshake signals 27 mu...

Page 46: ...4 System Boards Figure 2 5 SC3200 PCI Sub ISA Bus Interface In order to reduce the number of pins on the SC3200 device the PCI and Sub ISA bus pins are shared Sharing occurs on a bus cycle by bus cycle basis where the Core Logic PCI bridge arbitrates between PCI and Sub ISA cycles PCI Bus Interface Feature Summary PCI 2 1 with wake up capability 32 bit data path up to 33Mhz 3 3V signal support onl...

Page 47: ... Executing at power up it contains all power up initalization code for each of the system board devices Once initalization is complete the boot loader performs a custom Power On Self Test of the primary system board components and copies the operating system image from the Disk On Chip into system RAM The boot loader also contains custom extensions unique to the WS4 hardware These functions permit...

Page 48: ...sonality module The CF card is an intelligent solid state storage device containing a micro controller and firmware positioned in front of a block of flash memory The firmware responds to file IO requests from the Windows CE FAT file system driver and maps file data into the flash memory Compact Flash Cards with capacities of 32M 64M 128M and 256M have been used at various stages of production USB...

Page 49: ...SDRAMs timers ADCs DAC clock chips and peripheral devices As shown in the block diagram ACB2 is not used However ACB1 is connected to socket DIMM1 and is implemented as a Serial Presence Detect SPD Interface to the DIMM The Boot Loader utilizes DRAM timing parameters stored in the EEPROM to optimize the SC3200 memory controller Serial Interface The SC3200 block diagram in Figure 2 4 shows three se...

Page 50: ...n to the Super IO module within the SC3200 the system board also incorporates U15 a National Semiconductor Corp PC87360 Super IO chip to cover additional IO requirements Figure 2 7 displays an internal block diagram of the Super IO showing those functions implemented on the AB28 series system boards Figure 2 7 PC87360 Super IO Block Diagram ...

Page 51: ...mposed of seven data bits labeled SIO_PWM0 SIO_PWM6 and four control lines labeled DIR STROBE and ADDR0 ADDR1 See the CPLD section for more information RS422 Port A and B Control Signals Six GPIO pins three each for each multi purpose ports are dedicated to managing the Workstation 4 RS422 RS232 ports See the RS422 Port A and B section for how these signals are used to control each port COM3 Mux C...

Page 52: ... color Amber In addition the LED outputs can be programmed to blink at rates of 0 25 1 or 4 Hz The Workstation 4 diagnostics utility DEMODIAG can demo all LED colors and blink rates The POS application access the LED color and blink rates through the LED driver LED DLL a component of the platform software The combination of three colors and four blink rates yields the display modes summarized in F...

Page 53: ...IO panel includes CN1 mini DIN connectors for a PS 2 keyboard and mouse The Super IO Keyboard Mouse Controller is implemented as a single hardware module that houses two logical devices The keyboard controller KBC uses an 8 bit microcontroller compatible with 8042AH and PC87911 micro controllers Each interface consists of a serial clock and data line detailed in Figure 2 9 below Figure 2 9 Mouse a...

Page 54: ...SCL Serial Clock Line which allows easy interfacing to a wide range of devices such as the Serial EEPROM Low Pin Count LPC Interface AB28 ABRD36 Sheets 1 and 19 The interface between the SC3200 core logic and the Super IO is based on the Intel Low Pin Count Interface Specification as described in the LPC 1 0 specification It is a PCI like bus composed of seven signal lines used to replace the trad...

Page 55: ...200 Graphics Processor Block Diagram The Video Processor can select video input from the GX1 or the Video Input Port Direct VIP The Direct Video Input Port is not implemented therefore the GX1 is the primary source of video input The Video processor has an integrated color space converter to convert YUV data to RGB data The SC3200 video processor interfaces to a variety of TFT LCD panels Most LCD ...

Page 56: ...rive the LCD panel This is done in one of two ways depending on the type of LCD panel used Figure 2 12 depicts a unit with the Samsung LCD panel and companion LVDS receiver board XB34 The LVDS receiver board mounts to the LCD panel connector and is attached to the LCD bracket with two screws Figure 2 13 on the following page depicts units produced after October 2004 These workstations use a Sharp ...

Page 57: ...Workstation 4 and 4 LX Field Service Guide 2 19 WS4 Technical Overview TFT LCD Interface Figure 2 13 WS4 LCD Interface Sharp LCD Panel ...

Page 58: ...ains the firmware to initiate the analog to digital conversion process and convert the output into ASCII serial data U37 supplies a clock to the DCLK input and starts the conversion process by writing a serial control byte to the DIN of the ADC When the ADC has enough information to begin the conversion it enters the acquisition mode When the control byte is complete the ADC enters the conversion ...

Page 59: ...8 and ABRD36 System Boards It connects directly to the PCI bus at system board connector J18 and is used to support a PCMCIA wireless card The RL5C475 II is a cardbus controller that serves as a bridge between the PCI bus and a PCMCIA card by translating PCI bus cycles into PCMCIA bus cycles The Cardbus controller is paired with U2 a MIC2562 Power Switch Figure 2 14 Optional PCMCIA Daughter Card B...

Page 60: ...ut simply routes the PCI signals up from the AB28 or ABRD36 system board connector to a Type IIIA 124 Pin card edge connector Workstation 4 wireless kits include this daughter card The Mini PCI bus is functionally equivalent to PCI Version 2 2 a 32 bit 33 Mhz bus with 3 3V powered connectors and full support for bus mastering and direct memory access To use this card in an older Workstation 4 Syst...

Page 61: ...om Suspend Control Wake On LAN WOL Control CPU Interface and Register Control The SC3200 CPU communicates to the CPLD through a dedicated interface composed of several Super IO GPIO pins The interface consists of seven data bits labeled SIO_PWM0 SIO_PWM6 and four control bits labeled DIR ADDR0 ADDR1 and STROBE The ABRD36 system board adds another control line called BTN_CNTR4 since the CLPD used o...

Page 62: ...0 Low High Activate Cash Drawer A Solenoid 1011101 0 1 0 Low High Activate Cash Drawer B Solenoid 1011000 0 1 0 Low High Deactivate Cash Drawer A Solenoid 1011001 0 1 0 Low High Deactivate Cash Drawer B Solenoid 1100011 1 1 0 Low High Generate System Reset 0100111 1 1 0 Low High Current State Register WOL Data 0 0 1 System Board Hardware Revision Data 0 1 1 Read Power Button Cash Drawer A B Status...

Page 63: ...agement states Figure 2 15 is block diagram showing all of the related components on the AB28 series system board Figure 2 15 Power Button and Power Supply Control AB28 Series The power button is connected to the CPLD at Pin 9 with the external R C network providing switch de bounce The CPLD conditions the switch closure into a single 16ms positive going pulse This signal ON_OFF_SW is fed directly...

Page 64: ...ons describes how the CPLD CPU and on board voltage regulators on all system boards manage each of the WS4 power management states starting with the UNPLUGGED state UNPLUGGED Refer to Figure 2 17 Connecting the AC input cable to the WS4 causes U34 an LP3470 Tiny Power On Reset circuit to generate POR to the CPLD which in turn generates PORST the signal that actually resets the CPU and other system...

Page 65: ...utputs When the workstation is ON and the operating system is running the power button driver POWER DLL polls the CPLD every 150ms to detect further transitions of the power button If the power button is pressed and held for less than four seconds the workstation enters the SUSPEND state If the power button is pressed and held for greater than four seconds the workstation enters the NOPOWER state ...

Page 66: ... voltages designated Always remain active supplying power to various components such as the CPLD and Ethernet Controller 3V Always drives U36 a LM1117 voltage regulator configured to supply 2V to the VSBL pin of the processor This keeps the CPU power management logic active in order to detect further transitions of the ON_OFF_SW signal from the CPLD Reset Circuit REF AB28 ABRD36 Sheets 12 and 17 F...

Page 67: ...he command to the CPLD which after making sure that PWRGD is true produces the PORST signal to restart the workstation Wake On LAN Power Management Event Power Management Event PME inputs can occur from two sources the on board Ethernet Controller or a PCMCIA Card installed in the WS4 PCMCIA Daughter Card or a Mini PCI Wireless Card installed in the Mini PCI Daughter Card On the system board U15 t...

Page 68: ... values from the CPU create a pulse of varying widths to modulate the backlight inverter module attached to the LCD panel The backlight brightness values are hard coded in the boot loader and optimized for the supported TFT LCD panel 10 4V Regulator Sheet 17 This circuit regulates 12V to 10 4V for the Backlight Inverter Board mounted to the LCD bracket in the top cover This voltage regulator is re...

Page 69: ...FIGURATION ReverseCDStatus 0 is the default setting The default setting causes the API to report the drawer open closed logic levels mentioned above If ReverseCDStatus 1 the API inverts the drawer open closed logic levels before passing them on to the application software The registry setting would be changed from the default only if using a cash drawer with opposite drawer open closed logic than ...

Page 70: ... configured by EEPROM Full Duplex support for 10 and 100 Mb s data rates 144 pin TFQP package Low Power 3 3V CMOS design with typical consumption of 561 mW during operation 380 mW in WOL mode 33 mW in sleep mode Auto Negotiation Fast Link Pulse FLP Bursts provide the signaling required to Auto negotiate a connection between two devices at each end of a link segment The DP83815 supports four differ...

Page 71: ...e DP83815 supports three LED outputs to indicate the status of LAN Activity Transmit or Receive and a 100 Mb s or 10 Mb s link The LEDs are integrated into the rear panel RJ45 LAN connectors as shown in the Figure 2 19 below Figure 2 19 Workstation 4 LAN Indicator LEDs The Link Connection speed LED shown on the left indicates a valid link connection and the color indicates the connection speed The...

Page 72: ...t is received The PME output of the DP83815 is fed to U20 where it is ANDed with PME2 from the PCMCIA Daughter Card The output of U20 PME is fed to an input on the CPLD The CPLD monitors this input and when a PME pulse appears simulates a power button press to bring the unit from the SUSPEND or NOPOWER state to the ON state See the CLPD section for more information on how this is accomplished EEPR...

Page 73: ...ive and control signals for RS422 Port A SIgnal Name Type Description TXD4 O Contains serial data to be transmitted over the RS422 U9 4 U10 4 or RS232 U7 16 interface Always enabled 422_232_SEL_4 O When Low 0 RS422 A interface is active When High 1 RS232 A Interface is active 422_MODE_4 O When High 1 RS422 A is Mode IDN When Low 0 RS422 A is Mode LCC TRANSMIT_EN4 O Used with 422_MODE_4 to generate...

Page 74: ... from either the RS422 or RS232 interface Produced by ORing RXD4_232 and RXD4_422 at U11 8 SIgnal Name Type Description TXD5 O Contains serial data to be transmitted over the RS422 B U6 4 U5 4 or RS232 U7 15 interface Always enabled 422_232_SEL_5 O When Low 0 RS422 B interface is active When High 1 RS232 B Interface is active 422_MODE_5 O When High 1 RS422 B is Mode IDN When Low 0 RS422 B is Mode ...

Page 75: ...eived from the RS232 Interface Produced by ANDed RXD5_232 and inverted 422_232_SEL_5 at U13 3 RXD5_422 I Contains serial data received from the RS422 Interface Produced by ANDing RXD5_422 and inverted 422_232_SEL_5 at U13 8 RXD5 I Contains serial data received from either the RS422 or RS232 interface Produced by ORing RXD5_232 and RXD_422 at U11 6 SIgnal Name Type Description ...

Page 76: ...and Mag Stripe Reader connector CN10 does not include a TX Pin The interface speed is 9600 baud Figure 2 22 COM3 Configuration System Boards AB28 F and AB28 G As the WS4 entered production in 2003 support for an optional IEE 2x20 pole display was included An integrated version of the 2x20 VFD customer display was not available The LCD Customer Display In late 2004 a new customer display option the...

Page 77: ... Display with the following restrictions When the LCD Customer Display is connected the COM3 baud rate is shifted to 115K baud during LCD display write cycles then returned to 9600 baud While the interface runs at 115K the Magnetic Stripe Reader is disabled If a card is swiped through the reader at this time it will return no data The user may see this as an occasional missed swipe and simply pull...

Page 78: ...neral Purpose IO GPIO lines from Super IO U15 provide Input Enable IE signals for the RX MUX and Output Enable OE signals for the TX MUX The RX and TX Multiplexer acts as a traffic cop routing COM3 data to from each device as required Figure 2 23 COM3 Configuration AB28 I or ABRD36 B System Boards Other changes to the COM3 interface include the addition of an RX line to Customer Display connectors...

Page 79: ...ce Guide 2 41 WS4 Technical Overview Customer Display Mag Card Reader Port COM3 Figure 2 24 shows a detailed diagram of the multiplexer summarized from Sheets 18 19 and 20 of the AB28 I Schematic Figure 2 24 AB28 I System Board COM3 Mux ...

Page 80: ...not support the multiplexer Several typical operations are described below See Figure 2 24 for reference MSR Interface Active By default the WS4 API connects the MSR to COM3 at 9600 baud This is done by setting MSR_IE from U15 2 low at U47 13 to pass RXD_MSR from the reader at U47 12 to MSR_REAR_RX at U47 11 MSR_REAR_RX contains serial data from a card swipe and is fed to U15 105 Simultaneously tr...

Page 81: ... and sends the reader an XON command If a card swipe occurred during the update cycle the MSR forwards the card data to the API Rear LCD Customer Display Firmware Programming Referring to Figure 2 24 note the addition of two pins to J1 the Rear Display connector The LCD Customer Display Rear or Pole Mount contains a microcontroller with on board flash EEPROM for firmware storage The firmware can b...

Page 82: ...EE VFD Customer Display The following pages provide a general description of this display Casework The Rear and Pole LCD Customer display share a common housing A disassembled display housing is shown in Figure 2 25 The housing consists of a front and rear cover To adapt the housing to a rear or pole model new hinge and bracket assembly shown on the right side of the illustration is installed Figu...

Page 83: ...ts of the LCD interface board and Optrex 240x64 STN LCD panel A pair of 36 conductor ribbon cables carries address data and power from the interface board to the LCD The LED backlight is driven by a separate two conductor cable Figure 2 26 LCD Customer Display Block Diagram The LCD Interface Board and Optrex LCD panel combination can be found in the following products Rear LCD Customer Display Pol...

Page 84: ...erface Board receives display data and commands through a 115K baud serial interface The serial interface supports in circuit programming of the on board flash memory Microcontroller U4 establishes an 8 bit data bus and several read write control signals to communicate with a pair of Epson micro controllers within the Optrex STN LCD panel U4 sends data and commands to the LCD micro controllers eac...

Page 85: ...s See Chapter 2 for technical details about the AB28 I System Board COM3 Mux Enabling the LCD Customer Display WS4 LCD Customer Display support started with the GR1 2 software platform and continued through GR2 3 to the WS4 EOL All Workstation 4s shipped configured to use the IEE 2x20 VFD display that operates at 9600 Baud Enabling the LCD Customer Display requires following the procedure listed b...

Page 86: ...2 48 Workstation 4 and 4 LX Field Service Guide WS4 Technical Overview Optional LCD Customer Display ...

Page 87: ... topics include using the built in DiagUtility and a discussion of the WS4 Platform files In this chapter Introduction 3 2 Operational Troubleshooting 3 4 Testing the Power Supply and System Board Voltages 3 8 POST Errors 3 11 LCD Display Related 3 14 Touchscreen Related 3 16 Local Area Network LAN Related 3 18 Mechanical Related 3 21 Peripheral Related 3 22 Workstation Recovery Procedures 3 26 ...

Page 88: ...lated This section lists all display and display quality problems Touchscreen Related This section provides information on touchscreen lock up and calibration issues Local Area Network LAN Related This section provides network related issues Mechanical Related This section covers any issues related to the Workstation 4 casework Peripheral Related This section covers peripherals including IDN print...

Page 89: ...eyboard touch the pencil icon once then touch the LargeKB entry from the menu that appears The keyboard can be repositioned by pressing and holding the gray bar at the top of the keyboard with your finger and dragging it to the desired position To disable the keyboard press the pencil icon again and select Hide Input Panel from the menu that appears Testing the WS4 Many of the tests are self expla...

Page 90: ...rator LED should flash Amber once every four seconds Is the Operator LED flashing Amber If YES proceed to Step 3 If NO is the Operator LED solid Amber This condition is accompanied by other symptoms including no beeper and no blue screen Corrupt boot loader U24 P N 100111 007 This can happen if a power failure occurs while the boot loader is being flashed by the DOCUTIL program as part of a boot l...

Page 91: ...ing system image stored there To indicate this a black border appears around blue screen and progress bar The boot time extends to about three minutes The CAL deletes the NK BIN from the CF file later However in most cases the NK BIN file is not present The majority of the time the blue screen is displayed the operating system is copying the image stored on the DOC into SDRAM When the transfer is ...

Page 92: ...reported The Operator LED continues to blink Amber every four seconds Remove the AC power cable from the workstation and try the following Replace the Disk On Chip U18 There are several possible causes for this A failed or aborted CAL upgrade can leave some or all platform driver files in a renamed state In most cases the OS loads but one or more platform drivers do not load causing a blank screen...

Page 93: ...NOPOWER state but when you release the power button the workstation restarts The Workstation is running CPLD Version 9 or previous The workstation must be returned to MICROS to be upgraded to CPLD Version 10 This is a switch de bounce issue Not all WS4 s with CPLD Version 9 or earlier experience this problem but those that do are consistent CPLD version 10 includes improved switch de bounce capabi...

Page 94: ...oltages 1 Check the power supply output voltages and the system board 5V to 3V converter Figure 3 1 points out where to check each ALWAYS voltage 3V ALWAYS is generated by U43 and the output can be checked at L11 Figure 3 1 Checking the ALWAYS Voltages AB28 and ABRD36 Boards If none of the ALWAYS voltages are present check the power supply fuse This fuse is located near the AC input connector on t...

Page 95: ...be checked as detailed in the next step When the workstation is in the NOPOWER mode these regulators cut power to most system board devices Chapter 2 describes how the ONCTL and ONCTL signals are used to control the on board switched regulators on the AB28 and ABRD36 system boards To check the working voltages on the AB28 System Board see Step 2 below To check the working voltages on the ABRD36 Sy...

Page 96: ...er display connectors All other voltage test points and component designations are the same as the AB28 F G and I Figure 3 3 Checking the ABRD36 System Board Working Voltages The VCC5V_DISP circuit briefly removes power to the integrated and pole customer displays ports when the LCD Reset button in the WS4 Diagnostics Utility is pressed This circuit requires UWS4 DLL Version 1 27 or later part of ...

Page 97: ... version by dropping a single character from the middle digit For example boot loader Version 2 0 06 is displayed as Version 2 06 Note 1 Unlike most desktop or laptop PCs where a single beep indicates the successful completion of the POST the single beep indicates that the POST has started Should a failure occur the single beep will be followed by multiple beeps corresponding to one of the beep co...

Page 98: ...procedure for this situation Note 5 If the POST indicates a touchscreen controller failure check the following While the POST is underway the LCD displays the blue screen w MICROS logo we recommend the following Do not place objects on the screen Do not clean the touchscreen If the POST still fails the touchscreen power off the unit and disconnect the touchscreen ribbon cable from the touchscreen ...

Page 99: ... if a problem is encountered a failure is reported This is likely a defective EEPROM or perhaps a problem with the Super IO device that accesses it Note 8 This error indicates a problem was found on the PCI Bus and could point to any of the following PCI bus devices Ethernet Controller and Serial EEPROM USB Controller TFT Video Controller IDE Controller Audio Controller Mini PCI Adapter XBRD68 Req...

Page 100: ... about 55 seconds Defective Backlight Inverter Board Defective Backlight Inverter Cable Defective Backlight Pre Regulator circuit on System Board check System Board fuse F5 Blank LCD No Video Symptoms The backlights are on the unit appears to boot normally the beeper sounds once the LED is flashing Amber and turns solid Green after about 55 seconds but no video appears Loose connection between the...

Page 101: ... be very dim as previously mentioned If you delete or rename this file the WS4 API will not find it and will automatically use a higher correction value Disconnected backlight tube s or bent pins on the inverter connector s Defective backlight tube s LCD Quality Problems Symptoms An image appears on the LCD but it exhibits a loss of horizontal or vertical sync tearing and or fuzzy text Loose conne...

Page 102: ... the driver where in most cases it detects the COM port hardware and the touchscreen functions normally The GR 1 0 software platform or later includes an updated touchscreen driver that corrects the problem Touchscreen controller configuration error Power off the unit and connect a PS 2 or USB mouse Power up and proceed to the Control Panel Start Settings Control Panel Touch Screen Select the Hard...

Page 103: ... Field Bulletin FB04 003 addresses this issue by connecting a mouse and using the 2 point calibration utility to restore touchscreen operation GR 1 2 or later includes an improved 25 point linearization utility False Touches Symptoms The cursor may jump to random locations or to the same location without touching the screen The cursor may also jump to a different location than where you touch Defe...

Page 104: ... However this does not mean the Workstation will actually be able to communicate with the server This is because the link LED operates at the physical layer of the network and does not require an operating system network drivers or TCP IP address to function As long as power is applied the Ethernet controller in the hub or switch produces Link Beat Pulses that are detected by the Ethernet controll...

Page 105: ...t be supported 5 10 Auto Duplex May not be supported For example if the customer site is using 100 Full Duplex try a media setting of 3 WS4 will not Connect to LAN Link LED ON Symptoms When the WS4 is connected to a LAN the Link LED illuminates but the unit cannot connect to a server The WS4 may be configured for DHCP but is assigned a static IP address or vise versa Moving a workstation between 9...

Page 106: ...shooting Local Area Network LAN Related In the IP address tab make the selection between DHCP or Static IP and enter a static IP address suitable for the site normally in the 192 168 x x range if required Restart the WS4 after making changes to network settings ...

Page 107: ...actuator On units with a serial number higher than 3000 the plastic actuator is heat staked to the base and is far more resistant to damage but can be damaged with excessive force If this occurs the workstation base must be replaced Power Switch Alignment There are two possible causes for this Loose or missing System Board mounting hardware Make sure all system board mounting hardware is installed...

Page 108: ...rds check R5 R6 R26 and R27 These are through hole devices so it s best to remove the system board in order to get the meter probes on the device Each resistor should read about 15Ω The AB28 I and ABRD36 boards use surface mount devices removing the system board to test is not required Check F9 F10 F11 and F12 for a reading of 2 or 3Ω On all revisions check surface mount clamping diodes D11 D12 D1...

Page 109: ...ng The WS4 is configured to use the LCD Customer Display At start up the API looks for a text file called PoleConfig in the DOC folder To support the VFD customer display the PoleConfig file must be blank contain the line LCDDISPLAY 0 or not present To configure any GR to support the VFD customer display use WS4 DiagUtility version 1 90 or later Proceed to the Cust Disp tab In the LCD Pole Config ...

Page 110: ...ludes a description of the customer display interface Pole Display Interface cable damaged or not seated properly in the customer display port Interface cable is disconnected from the LCD Interface Board inside the display housing Defective LCD Interface Board Defective LCD Module No Information on LCD Customer Display Symptoms The LCD Backlight illuminate when the WS4 starts but no information ap...

Page 111: ...pole or integrated customer display housing will not stay in the desired position See FB06 002A for more information LCD Customer Display Intermittent Reverse Image Symptoms The right side of the display locks up or runs with reversed characters LCD Customer Display firmware should be v 10 0 or greater See FB05 003 for more information ...

Page 112: ...POS Application After completing the command the workstation shuts down When the operating system starts it finds that the CF card does not contain a persistent registry forcing it to use the default registry stored with the operating system The default registry starts the CAL client stored in the DOC McrsCAL folder Formatting the Compact Flash Card The CF Card file system in the Windows CE NET 4 ...

Page 113: ... This allows the CAL to quickly determine that an application is installed and start it on subsequent boots Using WCF to delete the registry all files or formatting the card removes the information the CAL placed in the registry so the next time it starts the CAL assumes that the workstation is new and must pointed to a CAL server When the CAL determines the WS4 is not configured or if you use the...

Page 114: ...erator LCD to assist in detecting bright or black pixels Version 1 90 Included with GR 1 2 through GR 2 3a System Info Dump A new button on the System Info Screen writes all values to a text file called WS4Dump txt located on the root of the DOC folder Integrated and Pole LCD Customer Display Support Used to enable the CFD or LCD Customer Display options Also includes testing of the LCD Customer D...

Page 115: ...nents A brief description of the hardware components follows Hardware Revision This field displays the WS4 system board hardware revision letter It is read directly from the system board through the WS4 API System Board Revisions F G and I for the AB28 series or Revision K for the ABRD36 system board may be seen System Boards AB28 A B and C are found only in pre production DVT and MVT units Revisi...

Page 116: ...rd when the Windows File System format is applied by the manufacturer of the CF card DOC Space Available This field displays the free space available on the Disk On Chip All units ship with a 32M device Unlike the values shown in the RAM or CF Space Available fields the value displayed in this field will be consistent across most workstations This is because the DOC contains the WinCE operating sy...

Page 117: ...er is edited to display the Platform and General Release versions While this method of displaying the GR version is not completely fool proof the windows wallpaper can be replaced by custom wallpaper deleted or edited it is the best that can be accomplished given the current architecture A brief description of each GR package and platform component follows GR 1 1 Platform Software GR 1 1 introduce...

Page 118: ... LCD Customer Display ddi_gx_sharp inf values adjusted for the Sharp LG41 LCD CAL Package Upgrade The Windows CE desktop wallpaper states EngPlatform4 2 v12 97 RC15 2 GR2 3 GR2 3a Platform Software Modified the doc lxvideo_sharp inf file to support the Sharp LG61 LCD Panel The illustration below displays an example of the WS4 System Information screen with the Platform Software fields highlighted ...

Page 119: ...ustomer display UWS4Power DLL This driver monitors the power button when Windows CE is running It polls the system board CPLD every 150 milliseconds checking for switch closures and transitions the workstation between the various power management states In addition the CAL calls on this driver to force a restart of the workstation during the application download or upgrades When the unit is in the...

Page 120: ...y default in My Computer Windows CE 4 x considers files with DAT extension to be Protected Operating System Files and hides them To view all files in My Computer click View Options and remove the check boxes found in that window Start with the folders first then go to the files in the DOC folder DOC HWInf ddi_gx_sharp inf Contained in the HWInf folder this file appeared when the change over from S...

Page 121: ...installed and sets the interface baud rate to 9600 If the PoleConfig file is present and contains the statement LCDDISPLAY 0 the API again assumes the 2x20 VFD customer display is installed and sets the interface baud rate to 9600 If the PoleConfig file is present and contains the statement LCDDISPLAY 1 the API assumes the LCD Customer Display is installed and sets the interface baud rate to 115K ...

Page 122: ... over to the Sharp LCD ddi_gx_sharp dll is renamed to DDI_GX DLL replacing the Samsung LCD driver The DOC HWConfigSetup dat file was created to rename the LCD drivers from Sharp to Samsung as required if given a command from the CAL script but this was not implemented The majority of Workstation 4s were built with the Sharp LG41 and smaller number were produced with the Sharp LG61 however both use...

Page 123: ...orkstation 4 System Boards AB28 and ABRD36 In this chapter Workstation 4 LX System Block Diagram 4 2 LX800 Processor and TFT Controller 4 3 CS5536 Companion Device 4 7 W83627HF Super IO 4 10 TFT LCD and Backlight Interface 4 12 USB Interface 4 15 Touchscreen Interface 4 17 Point of Sale Interfaces 4 18 RTL8110SC 10 100 1000Mbps PCI Ethernet Controller 4 25 System Board Power Distribution 4 26 ...

Page 124: ... 4 LX System Block Diagram Figure 4 1 below displays a block diagram of the Workstation 4 LX Figure 4 1 WS4 LX Block Diagram w ABRD86 System Board The figure above represents the first production versions of the WS4 LX starting in July 2007 System Boards ABRD86 C and ABRD86 D may be found ABRD86 E will appear in early 2008 ...

Page 125: ...WS4 LX Technical Overview LX800 Processor and TFT Controller LX800 Processor and TFT Controller REF ABRD86 Sheets 1 2 and 3 Figure 4 2 displays a block diagram of the LX800 processor Figure 4 2 AMD Geode LX800 Processor TFT Controller Block Diagram ...

Page 126: ...rved for the GLIU itself and not considered a physical port Together GLIU0 and GLIU1 make up the internal bus comprised of the GeodeLink architecture GLIU0 connects to the five modules that require high bandwidth and GLIU1 connects to the five low bandwidth modules GLIU0 is connected to modules with high bandwidth requirements CPU Core GeodeLink Memory Controller GLMC Graphics Processor Display Co...

Page 127: ...Synchronous Block The FIFO module consists of a group of in bound and out bound FIFOs Each FIFO provides a simple synchronous interfaces to read and write requests Transaction Forwarding The Transaction Forwarding block receives processes and forwards transaction requests and responses between the GeodeLink Interface and PCI Bus Blocks Transaction ordering rules are implemented and write gathering...

Page 128: ...ets from masters and routes them to slaves Similarly slave response packets are routed back to the master The bus is non blocking Several requests can be pending but order is not guaranteed All packets have one source and one destination broadcasts are not allowed The existence of the GeodeLink architecture is generally invisible to the user or even a system programmer All GeodeLink initialization...

Page 129: ...des two high speed industry standard serial ports configured as COM4 and COM5 and used for the RS422 A and RS422 B ports The UARTs are 16550 and 16450 software compliant and support baud rates up to 115 2 kbps Real Time Clock RTC and CMOS RAM The companion device contains the equivalent of Motorola MC146818A compatible real time clock The clock performs two functions It keeps track of the time and...

Page 130: ...outed to the IRQ mapper and interacts with the Legacy DMA logic to perform DMA between on chip and off chip devices The LPC interface supports memory I O DMA and firmware hub based devices Audio Codec 97 Controller The codec interface is AC97 V2 3 compliant and contains support for any AC97 audio codec with Sample Rate Conversion SRC The LX System board can accommodate a Realtek ALC203 Audio Codec...

Page 131: ... 3 Workstation 4 LX IDE Interface Block Diagram The CF Daughter card is positioned to make the CF card available at the IO panel and serve as the personality module The CF card is an intelligent solid state storage device containing a micro controller and firmware positioned in front of a block of flash memory The firmware responds to file IO requests from the Windows CE file system driver and map...

Page 132: ...compatible Reduce the cost of traditional ISA bus devices Performs the same bus cycle types as ISA memory I O DMA and Bus Master Interrupts are communicated with the serial interrupt SERIRQ protocol Figure 4 4 Low Pin Count Interface Signal Description Serial Interface The Super IO includes two high speed 16550 UARTs labelled UART A and UART B Each UART includes a 16 byte send receive FIFO a progr...

Page 133: ...ustomer Display MSR Interface for more information on these signals Hardware Monitor The Super IO hardware monitor is configured to display several hardware parameters including the CPU temperature and voltages including VCORE VCC3 and VCCMEM Cash Drawer Control Four pins are dedicated to the Cash Drawer Interface Two signals CD_ST_A and CD_ST_B are used to monitor the cash drawer open closed stat...

Page 134: ...ontroller DC and the Video Processor VP Figure 4 5 LX800 Graphics Processor Block Diagram The Graphics Processor GP The Graphics Processor is based on the Graphics processor used in the Geode Processor but adds the GeodeLink memory interface and other features to support improved performance and functionality The GP is a BitBLT vector graphics engine that supports pattern generation source expansi...

Page 135: ... a GLIU master slave interface to provide three main functions the Video Processor the TFT controller and the Video Output Port VOP The VP mixes the graphics and video streams and outputs digital RGB data to the TFT Controller The TFT Controller converts the digital RGB output of the Video Mixer block to the digital output suitable for driving a TFT flat panel LCD The panel interface supports most...

Page 136: ...uencing is provided by the VDDEN_VIPSYNC output of the LX800 TFT controller This signal drives a switch consisting of Q9 and Q8 VDDEN_VIPSYNC does not go active until all system voltages and busses have become stable the processor is executing instructions Backlight Interface The backlight enable signal DISPEN originates in the LX800 TFT controller This enable signal is ANDed with SIO_PWM at U23 t...

Page 137: ...terface USB Interface REF ABRD86 Sheets 9 17 20 and 21 The Workstation 4 LX system board includes a total of six USB ports four of which are available at the IO panel Figure 4 7 displays a block diagram of the system board USB Interfaces Figure 4 7 WS4 LX System Board USB Interface ...

Page 138: ... screen of BIOS Setup UDOC_ON drives a switch consisting of Q11 and Q12 The default setting of Normal sets UDOC_ON high enabling the switch and providing VCC5_UDOC to power the USB Flash Drive attached to J5 When the Boot Test Image field is set to Alternate UDOC_ON goes low turns off the switch cutting VCC5_UDOC from the USB Flash Drive socket As the unit powers up and USB devices are detected an...

Page 139: ...acket protocol is used for all communications The measurement system is based on a 10 bit ADC and is extrapolated into a touch resolution of 12 bits with a minimum report rate of 13 ms point All variable parameters are stored in serial EEPROM U37 The contents of this device are protected by error detection encoding LED1 a Green surface mount LED is connected to controller U39 to indicate status Af...

Page 140: ...r OFF state A Low on the enable input passes the signal on the input pin to the output pin The multiplexer operation is controlled by the WS4 LX API UWS4 DLL To highlight circuit operation several typical operations are described below Figure 4 8 shows a detailed diagram of how each interface is connected to the multiplexer summarized from Sheets 16 and 30 from the ABRD86 D schematics Magnetic Str...

Page 141: ...Workstation 4 and 4 LX Field Service Guide 4 19 WS4 LX Technical Overview Point of Sale Interfaces Figure 4 8 WS4 LX System Board COM3 Mux ...

Page 142: ...pair of OR gates in U18 that buffer the transmit line to CN2 2 for the Pole LCD Customer Display and J1 2 for the Rear LCD Customer Display The customer display port can selectively receive serial data from the Rear or Pole LCD Customer Display as required To receive data from a Rear LCD Customer Display the API sets REAR_IE low at U30 10 placing data from the rear display at U30 9 on RXD2 at U30 ...

Page 143: ...ial data to be transmitted over the RS422A U11 4 U12 4 or RS232 U1 16 interface Always enabled 422_232_SEL_1 O When Low 0 RS422 A interface is active When High 1 RS232 A Interface is active 422_MODE_1 O When High 1 RS422 A is Mode IDN When Low 0 RS422 A is Mode LCC TRANSMIT_EN1 O Used with 422_MODE_1 to generate DE_1A DE_1B RE_1A and RE_1B for controlling RS422 Transceivers U11 and U12 DE_1A O Tra...

Page 144: ...4 O Contains serial data to be transmitted over the RS422 B U7 4 U8 4 or RS232 U1 4 interface Always enabled 422_232_SEL_0 O When Low 0 RS422 B interface is active When High 1 RS232 B Interface is active 422_MODE_0 O When High 1 RS422 B is Mode IDN When Low 0 RS422 B is Mode LCC TRANSMIT_EN0 O Used with 422_MODE_0 to generate DE_0A DE_0B RE_0A and RE_0B for controlling RS422 Transceivers U7 and U8...

Page 145: ...each transistor from the back EMF created by the solenoid as the transistor switches off The 12V supply VCC12 conducts through D14 when the 24V circuit is not active through self resetting fuse F10 If the 24V cash drawer setting in the BIOS is active diode D14 isolates VCC12 Cash Drawer Closed Logic Each drawer contains a SPST switch positioned to detect the drawer open closed status The interface...

Page 146: ...tch consisting of Q6 and MOSFET Q7 The GPIO signal VCC24_ON enables the switch VCC24_ON is controlled by the Cash drawer voltage field in the BIOS Special Configuration screen System Board Hardware Revision ABRD86 Sheet 16 The WS4 LX API as well as the BIOS can determine the hardware revision of the System Board it is operating on The WS4 LX Diagnostics Utility uses the API to display the hardware...

Page 147: ...are accessed and acts as a bus master when host memory is accessed for descriptor or packet data transfer The PCI Bus supports 32 bit and 66MHz speeds as implemented on the Workstation 4 LX System Board Link Speed and Activity LED Control The RTL8110SC supports up to four LEDs in four operational modes The LX System Board Ethernet connector includes a pair of two color LEDs integrated into the Eth...

Page 148: ...w System Board Power Distribution System Board Power Distribution Figure 4 11 below displays a diagram of how the standby and working voltages with the exception of DDR memory are derived from the three power supply outputs Figure 4 11 WS4 LX System Board Power Distribution ...

Page 149: ...AN This is required in order for the Ethernet Controller to detect and respond to a magic packet The PMC in the CS5536 Companion Device resides on the VCC3SB and VCORESB power planes in order to monitor activity on selected pins The 32KHz crystal connected to the Real Time Clock provides clock signals to the PMC state machine so that it can detect and respond to external events such as the user pr...

Page 150: ...4 28 Workstation 4 and 4 LX Field Service Guide WS4 LX Technical Overview System Board Power Distribution ...

Page 151: ...ilt in WS4 LX Diagnostics Utility and a discussion of the WS4 LX Platform files In this chapter Introduction 5 2 Operational Troubleshooting 5 4 Testing the WS4 LX Power Supply and System Board Voltages 5 9 Power On Self Test POST Errors 5 11 LCD Display Related 5 13 Touchscreen Related 5 15 Local Area Network LAN Related 5 16 Mechanical Related 5 18 Peripheral Related 5 19 Workstation 4 LX Diagno...

Page 152: ...y Related This section lists all display and display quality problems Touchscreen Related This section provides information on touchscreen lock up and calibration issues Local Area Network LAN Related This section provides network related issues Mechanical Related This section covers any issues related to the Workstation 4 LX casework Peripheral Related This section covers peripherals including ID...

Page 153: ...he pencil or keyboard icon once then touch the LargeKB entry from the menu that appears The keyboard can be repositioned by pressing and holding the gray bar at the top of the keyboard with your finger and dragging it to the desired position To disable the keyboard press the pencil icon again and select Hide Input Panel from the menu that appears Testing the WS4 LX Many of the tests are self expla...

Page 154: ...OS splash screen with MICROS logo Does the BIOS Splash Screen appear on the LCD If YES proceed to Step 3 If NO does the system board beeper sound more than once This indicates a BIOS POST failure See Figure 5 4 If NO is the Operator LED solid Blue This condition is accompanied by other symptoms such as blank screen The unit does not respond to the power button Corrupt BIOS chip U35 P N 100111 010 ...

Page 155: ...orm platform and or BIOS updates When all pre boot firmware utilities have completed the message Preparing Memory and Loading Windows CE followed by a series of dots that progress from left to right across the screen This indicates the operating system is starting to load The screen clears and remains blank for about six seconds then the Windows Embedded CE 6 0 desktop should appear Just prior to ...

Page 156: ...t Remove the USB Stick Key Chain Drive or Thumb Drive from the IO panel If a USB thumb drive is connected to the IO panel when the unit is started it can be detected and enumerated before the system board USB flash drive and therefore become the 1st boot device A number of factors can influence this including the response time of the external thumb drive compared to the system board USB Flash Driv...

Page 157: ...the CF card after a failed platform upgrade the unit will display the message Updating Operating System Please Wait each time it starts If this occurs use the Wipe Compact Flash utility to format the CF Card and reconnect the unit to a properly configured application server to obtain the latest WS4 LX platform files 4 The Workstation 4 LX boots to the Windows Embedded CE 6 0 Desktop The CAL starts...

Page 158: ...the CAL script uses the regedit exe utility stored in the doc utilities folder to extract CAL network and wireless related keys from the CF card registry and place them in a temporary reg file If a POS application is installed related registry settings are preserved as well The unit restarts and a pre boot firmware application called FlashCE detects the NK BIN file copies it over the existing NK B...

Page 159: ...dby voltages Note that the power supply must be connected to an AC source and the System Board for this test 1 Refer to Figure 5 2 below and check each power supply output and VCC3SB at the locations indicated Figure 5 2 Checking ABRD86 System Board Standby Voltages If no voltages are available remove the AC power cable from the unit and check the power supply AC fuse located near the AC input con...

Page 160: ... respond to the power button the Working domain voltages can be checked as outlined in the next step For more information about the Standby and Working power domains on the WS4 LX system board see Chapter 4 2 If the Standby voltages shown in Figure 5 2 are present but the ABRD86 board is non responsive refer to Figure 5 3 below and check the voltages at the points indicated Figure 5 3 Checking the...

Page 161: ...operational POST_BEEP_CPU 52 CPU test failed or CF Card POST_BEEP_GATE20 62 Gate A20 failure or USB Flash Drive POST_BEEP_DMA 7 DMA page base registers POST_BEEP_VIDEO 8 Video error non fatal POST_BEEP_KEYBOARD 9 Keyboard failure POST_BEEP_SHUTDOWN 10 CMOS shutdown register failed POST_BEEP_CACHE 11 External cache not working POST_BEEP_BOARD 12 Board initialization failure POST_BEEP_LOWMEM 13 Exha...

Page 162: ...efective Note 2 The shaded POST_BEEP_CPU and GATE A20 failure fields are part of the General Software Embedded BIOS POST The custom CF card and USB Flash Drive POST executes just after the main BIOS POST codes complete and report the same number of beeps should a failure occur However if a failure occurs with the CF or USB Flash Drive an error message is reported to the LCD in addition to the beep...

Page 163: ...D starts flashing Blue and turns solid Blue after some period of time Defective Backlight Inverter Board Loose or defective Backlight Inverter Cable Defective Backlight Regulator circuit Check output at CN11 4 and 5 Should be 10 3V If missing check F11 Q5 and D6 Blank LCD No Video Symptoms The backlights are on the unit appears to boot normally the unit produces a single beep the Operator LED is f...

Page 164: ...ts a loss of horizontal or vertical sync tearing and or fuzzy text Loose cable connection between the system board and LCD panel Damaged cable missing one or more conductors Solid Vertical Lines on LCD Symptoms The LCD exhibits a few solid vertical lines across the entire screen Defective LCD Panel Loose cable connection between the system board and LCD panel ...

Page 165: ...ontinue If NO possible defective Touchscreen Controller U39 Does LED1 turn solid Green when you touch the glass but the touch does not register If NO check the touchscreen ribbon cable and system board extension cable Another possibility is the touchscreen glass is installed incorrectly The touch sensitive surface must face the user See Chapter 6 for more information If YES possible defective syst...

Page 166: ... mean the Workstation will actually be able to communicate with the server This is because the link LED operates at the physical layer of the network and does not require an operating system network drivers or TCP IP address to function As long as power is applied the Ethernet controller in the hub or switch produces Link Beat Pulses that are detected by the Ethernet controller in the WS4 LX causi...

Page 167: ...s is assigned Moving a workstation between 9700 and 3700 systems may cause this problem to arise MICROS and third party applications use different methods of assigning an IP address to the WS4 LX Some POS applications 9700 may require that the WS4 LX obtain the IP address via DHCP while others RES may require the WS4 LX be assigned a static IP address To configure the workstation for DCHP or Stati...

Page 168: ...heat staked to the base but can be damaged by excessive force If this occurs the workstation base must be replaced Power Switch Alignment There are two possible causes for this Loose or missing system board mounting screws In particular the three front mounted stand off s All system board hardware should be installed and secured The system board power switch is mis aligned This occurs in very rare...

Page 169: ... resistors and clamping diodes above check out the associated Transceiver could be damaged RS422 A COM4 Replace U11 and U12 RS422 B COM5 Replace U7 U8 If the WS4 LX serial number is less than 7220007150 a metal tab under the system board may need to be removed Refer to FB07 002 for more information Defective or damaged IDN Module in the printer Substitute the IDN module RS232 Peripheral Device Doe...

Page 170: ...urn information the API sets the baud rate to 115K then queries the pole and or rear LCD customer display for its firmware version If the display responds with a firmware version the API assumes an LCD customer display is installed If no response is forthcoming at 115K the API assumes the 9600 Baud IEE 2x20 VFD is installed VFD Pole Customer Display Blinking Character but no Information Displayed ...

Page 171: ...Cable disconnected inside the display housing Defective LCD Interface Board or LCD Module Contrast too light See below LCD Customer Display is too dark or light Contrast is not adjusted properly Use the WS4LXDiagUtility to adjust contrast Defective EEPOT U1 x9313 on the LCD Interface Board General LCD Customer Display Problems Symptoms The LCD customer display may exhibit one of the following scra...

Page 172: ...ers dump the contents of each system info field and peripheral counters into a text file or examine information about the Windows CE Factory Restore feature Version 0 63 adds new features to the Customer Display Tab including the ability to individually address each pixel on the MICROS LCD Customer Display Running the WS4LXDiagUtilty 1 From the CE Desktop touch the My Computer icon twice 2 Touch t...

Page 173: ...s follows Workstation Model For those familiar with the original WS4 DiagUtility the Workstation Model is new field This field identifies the unit as the Workstation 4 LX an updated version of the original WS4 This is required because the Workstation 4 and Workstation 4 LX operating system image and platform files are incompatible and both the CAL and MICROS POS applications consider the WS4 LX a ...

Page 174: ...ress assigned by a DHCP server The Static is displayed this indicates the unit is assigned a static IP address Motherboard Serial This field displays a 19 digit serial number created at the time the system board is manufactured The number is stored in a serial EEPROM Each workstation will display a unique value in this field USB Flash Drive Size This field displays the size of the DOC partition of...

Page 175: ...ilities are installed on the unit prior to shipping to provide a foundation upon which all POS applications are installed During testing the platform software components are referred to as a RC Release Candidate until such time that MICROS deems components complete and stable where it becomes known as a General Release GR package Each GR package includes a modified wall paper bit map that states t...

Page 176: ...hile Windows Embedded CE 6 0 is running At boot time the BIOS controls the beeper LXPOWER DLL Version This driver helps manage power button events while the operating system is running In addition the CAL calls this driver to force a restart of the workstation during an application download or platform upgrade UWS4 DLL Version This file contains the WS4 LX API or Applications Programming Interface...

Page 177: ...WS4 LX API at start up to determine if a carriage return should be appended to Magtek Mode card data If MSRConfig is not present or contains the statement Magtek_CR 0 a carriage return character is not appended to the mag card data If MSRConfig is present and contains the line Magtek_CR 1 a carriage return is appended to the mag card data DOC FACRECOV DAT This file contains information about the W...

Page 178: ...lso control LCD backlight Starting with GR1 3 the screen saver is active when the unit leaves the factory By default the screen saver will activate in 5 minutes and display a WS4 LX logo Twenty minutes after the screen saver engages the backlights turn off When the screen saver is active a single touch restores the screen and discards touch coordinates A control panel applet lets you change the ac...

Page 179: ...card The CF Card file system in a Windows Embedded CE 6 0 can over time become corrupt CF card file system corruption is defined as inaccurate File Allocation Table FAT data that can result in files or folders that are stored or read incorrectly The amount of corruption and the symptoms it causes varies Should corruption of the CF file system occur it can only be removed through formatting Using t...

Page 180: ...ersion of the CAL script is used to load the application from a USB Thumb Drive connected to the IO Panel Platform Update The previous section describes how the CAL is used to configure a workstation and download the POS application in client server based systems such as 3700 or Simphony The CAL is also used to perform updates of the operating system image the CAL BIOS and the unique WS4 driver fi...

Page 181: ...iles and folders are copied from Partition 2 to Partition 3 the DOC partition Finally a Wipe CF is performed to remove all files from the Compact Flash card Included on the DOC folder is the FACRECOV DAT file When the unit is shipped this file contains the GR version of the files in the restore partition Each time Factory Restore is executed the time and date are appended to this file The contents...

Page 182: ...nfiguration screen and set the WIN_CE_FACTORY_RESTORE field to Enabled Press ESC to continue The screen prompts for the system password 4 If you have not changed the default system password enter Hmlton case sensitive and press enter Press Y to confirm The screen returns to the Setup Main Menu 5 Select Write to CMOS and Exit and press enter Press Y to confirm The unit restarts and prompts Factory ...

Page 183: ...e Workstation 4 family In this chapter Introduction 6 2 Removing the Top Cover 6 4 Removing the RF Shield 6 8 Remove and Replace the Power Supply 6 9 Remove and Replace the Workstation 4 System Board 6 11 Remove and Replace the LCD panel 6 19 Remove and Replace the Touchscreen 6 23 Remove and Replace the Magnetic Stripe Reader 6 25 Reassembling the RF Shield 6 26 LCD Customer Display 6 30 ...

Page 184: ...of the RF shield Always remove the AC power cable when removing or replacing the RF shield When the RF shield is not present but the unit is connected to AC power in order to take voltage readings hazardous AC and DC voltages exist on the power supply heat sinks When removing a cable pull on the body of the connector not the cable itself As you pull in line connectors apart keep them evenly aligne...

Page 185: ...disposed of after the proper removal and disposal of the lamps State of California Perchlorate Material Notification The Lithium coin cell batteries in this product contain perchlorate and are subject to the State of California s Best Management Practices BMP Regulations for Perchlorate Materials Please visit the website below for more information www dtsc ca gov hazardouswaste perchlorate ...

Page 186: ... the workstation connector panel including the AC Power Cable 2 Place a towel or soft cloth on your work surface to protect the touchscreen glass then place the workstation face down on this surface Refer to Figure 6 1 Figure 6 1 Removing the Top Cover screws The top cover is held in place by a pair of captive screws accessible from under the unit as shown in the upper half of the illustration abo...

Page 187: ... 4 Lift the cover at the front then push it towards the rear slightly to release the hinges If you lift up on the cover without first releasing the hinges you can break them 5 If this is an older WS4 refer to Figure 6 2 and lift the cover by the rear just enough to remove the mag stripe reader cable toroid attached to the shield Later versions of the WS4 and the WS4 LX do not have a toroid on the ...

Page 188: ...4 Use a flat blade screw driver to release the MSR cable connector from the system board connector Remove the backlight cable from the backlight inverter board Remove the touchscreen cable from the touchscreen extension cable Remove the Customer Display cable from the Rear LCD Customer Display cable if this option is installed Remove the LVDS cable from the LVDS board on the Samsung LCD or directl...

Page 189: ...X Field Service Guide 6 7 Remove and Replace the WS4 and WS4 LX FRUs Removing the Top Cover Figure 6 4 Removing Cables from the Top Cover Sharp LCD 7 The top cover can now be set aside 8 See page 6 8 to remove the RF shield ...

Page 190: ...ft up on the shield to remove it As you remove it take care not to damage the insulation on the display backlight or touchscreen extension cable After removing the RF Shield consult the list below to find your task See page 6 9 to remove and replace the Power Supply See page 6 11 to remove and replace the AB28 or ABRD36 System Boards See page 6 15 to remove and replace the ABRD86 System Board See ...

Page 191: ...emove the Top Cover See page 6 8 to remove the RF Shield 1 Refer to Figure 6 6 Remove the AC Input cable cable and ground lug from the power supply board Remove the power connector from the system board Figure 6 6 Removing the WS4 and WS4 LX Power Supply 2 Remove four screws from the power supply board SHOCK HAZARD Remove the AC Power Cable from the unit before proceeding CAUTION Refer to Field Bu...

Page 192: ...y tray Remove any foreign materials 4 Install the replacement power supply board install and fasten four screws A magnetized screwdriver is a must for this procedure 5 Install the AC input cable connector and ground lug at the rear of the power supply board 6 Install the system board power cable 7 See page 6 26 to re install the RF Shield and Top Cover ...

Page 193: ...hield 1 Remove three screws from the CF Daughter Card then remove it from the System Board connector If a wireless card is installed in the PCMCIA socket remove it 2 Refer to Figure 6 7 Remove the LCD Cable from J5 and the Backlight Inverter Cable from J17 The illustration shows an AB28 I system board If this is an AB28 F or AB28 G system board the LCD and Backlight cables with ground lugs are sho...

Page 194: ...f s are installed at the front of the board Figure 6 8 Installing Workstation 4 System Board Hardware Installing LCD and Backlight Cables AB28 I System Board 9 The LCD and backlight interface cables shipped with the AB28 I and ABRD36 System Boards do not include ground lugs Install the LCD cable in J5 and install the backlight cable in J17 Install the touchscreen extension cable to J20 on the syst...

Page 195: ...eplacing a AB28 F AB28 G or AB28 I system board with the ABRD36 System Board the platform software must be at least GR2 2 Removing the Disk On Chip When removing the Disk On Chip from its socket do not remove the device at the angle shown in the illustration below as this can break off pins on the device Figure 6 10 Use Caution when Removing the Disk On Chip Gently lift each end of the DOC a few m...

Page 196: ... 802 11 Wireless Card antenna cable that attaches to the IO panel Figure 6 11 Workstation 4 Wireless Card Configurations The Mini PCI wireless card requires that boot loader version 2 0 15 or later be installed in addition to the GR2 3 platform software More details on the Mini PCI Wireless Card configuration can be found in MD0011 012 Boot Loader EEPROM The Boot Loader EEPROM is U24 To remove thi...

Page 197: ... 6 13 Remove the LCD Cable from J3 and the Backlight Inverter Cable from CN11 Figure 6 13 Removing the WS4 LX System Board 3 Remove the power supply cable from J7 4 Remove the Touchscreen Extension Cable from J10 5 Remove the remaining hardware from the System Board This includes the three long stand off s positioned across the front of the System Board Remove the board from the base 6 Transfer de...

Page 198: ...Flash Daughter Card Figure 6 14 Installing the Workstation 4 LX System Board Hardware Remove Replace the USB Flash Drive Use a pair of needle nose pliers to pinch the stand off and remove the USB Flash Drive from J5 as shown on the left of the illustration below Figure 6 15 Removing and Installing the USB Flash Drive When installing a USB Flash Drive make sure the 2x5 connector is seated properly ...

Page 199: ...of the socket To install the DIMM line up the notch with the socket cut out Push on each end of the DIMM to lock the retention clips in place Figure 6 16 Remove Replace a DDR DIMM Remove Replace the BIOS EEPROM The BIOS EEPROM is located in a 32 pin PLCC socket U35 MICROS recommends that you use chip removal tool similar to that shown in the illustration It allows you to remove the EEPROM without ...

Page 200: ... Replace the Workstation 4 LX System Board Mini PCI Wireless Card To remove a Mini PCI Wireless Card from CN10 release the side retention clips to allow the board to flip up to the install position Remove the antenna cable and connector from the IO Panel Figure 6 18 Removing the Mini PCI Wireless Card ...

Page 201: ...ove the RF Shield 1 Place the Top Cover assembly face down on a towel or soft cloth to protect the touchscreen glass 2 Refer to Figure 6 19 and remove the following items The MSR assembly The LCD bracket is easier to remove and reinstall when the Mag Stripe Reader and spill cover are removed Display Board Samsung LCDs only Backlight Inverter Board Figure 6 19 Preparing to Remove the LCD Bracket VE...

Page 202: ...LCD Bracket from the Top Cover 4 Refer to Figure 6 21 and remove the four screws that fasten the LCD Panel to the LCD Bracket Remove the LCD panel from the LCD bracket by releasing the four clips shown in the illustration Figure 6 21 Removing the LCD Panel from the LCD Bracket 5 Orient and install the replacement LCD panel in the LCD bracket Make sure the four clips are seated properly Install the...

Page 203: ...nstall the LCD Bracket assembly with Touchscreen Holding the assembly as shown in Figure 6 23 to keep the touchscreen in place slide the assembly under the clips in the top cover shown in the inset and lower it into place Make sure top and bottom holes align Figure 6 23 Installing the LCD Bracket Assembly 10 Before fastening the LCD bracket in place flip the assembly over and check to ensure the g...

Page 204: ...cables from the LCD panel to the backlight board Secure the backlight cables to LCD panel with tape 14 Place the MSR assembly in the top cover with the cable oriented as shown in Figure 6 24 and attach the brackets and screws to the body of the reader Figure 6 24 Magnetic Stripe Reader Orientation 15 Install the MSR spill cover and fasten with four screws 16 See page 6 26 to reinstall the RF shiel...

Page 205: ... to remove the Top Cover See page 6 8 to remove the RF Shield 1 Remove the four screws that hold the MSR spill cover in place Remove the reader and bracket assembly and set aside 2 Refer to Figure 6 25 and remove the four screws that fasten the LCD Bracket assembly to the top cover Remove the LCD Bracket assembly by tilting the bracket up until it releases Figure 6 25 Removing the LCD Bracket 3 Ca...

Page 206: ...g the assembly as shown in Figure 6 27 slide the bracket under the clips in the top cover and lower it into place Make sure top and bottom holes align Figure 6 27 Installing the LCD Bracket 6 Before fastening the LCD bracket in place flip the assembly over and make sure the gasket is seated and touchscreen aligned properly 7 Fasten the LCD bracket to the top cover with four screws 8 Place the MSR ...

Page 207: ...Remove the four screws that hold the MSR spill cover in place 2 Remove the pair screws that hold the reader assembly to each bracket 3 If a toroid is installed on the interface cable remove it and transfer to the cable on the replacement reader The WS4 LX does not use a toroid on the Mag Card Reader interface cable 4 Orient the replacement reader assembly so that the cable exits to the left as sho...

Page 208: ...e the power supply input cables in the cutout at the rear of the shield as shown on the left Route the LCD and Integrated Customer Display cables through the appropriate cut outs on the top of the shield Reinstall the toroid on the LCD cable and place the toroid and cable in the cable clamps as shown The touchscreen extension cable should project from the opening at the front of the shield The bac...

Page 209: ...ectly in front of the base 6 Connect the following cables to the top cover Touchscreen ribbon cable to the touchscreen extension cable projecting from the front of the shield LVDS cable to the LVDS Receiver Board on a Samsung LCD Figure 6 31 or directly to the Sharp LCD Panel Figure 6 32 and the Backlight Cable to the Backlight Inverter Board WARNING Before continuing take a moment to ensure the s...

Page 210: ... FRUs Reassembling the RF Shield Insert the modular connector on the Mag Stripe Reader Cable through the cut out in the shield and attach it to the system board connector Figure 6 31 Connecting Cables to the Top Cover Samsung LCD Figure 6 32 Connecting Cables to the Top Cover Sharp LCD ...

Page 211: ...ecuring the Mag Card Reader Cable to the RF Shield Older Units Only 8 If the workstation includes an optional Rear LCD Customer Display connect it to the customer display cable projecting from the display housing 9 Orient the LCD assembly as shown in Figure 6 34 and place the hinge assembly in the top cover cut out before fitting the top cover to the base Figure 6 34 Installing the Rear Customer D...

Page 212: ...interface cable and mounting hinge The replacement part number of each component can be found in Chapter 1 1 Place the display face down on the work surface and remove the two captive screws from the rear cover Figure 6 35 Figure 6 35 Removing the LCD Customer Display cover 2 To remove the LCD Module remove the two screws shown in Figure 6 36 Figure 6 36 Removing the LCD Module 3 Place the LCD mod...

Page 213: ...gure 6 37 Release the retention clips on each connector as shown at the top of the illustration then remove the cable Figure 6 37 Removing the LCD Module Ribbon Cables 5 Remove the Interface Board and cable from the housing by removing the screws shown in Figure 6 38 Figure 6 38 Removing the Interface Board and Cable ...

Page 214: ...t and refer to Figure 6 39 When you open the clips pull the hinge assembly out of the rear cover Figure 6 39 Removing the Rear or Pole Hinge Older Hinge 7 To re install the LCD Module interface cable refer to Figure 6 40 to ensure the retention clips on each connector are open before attempting to insert the ribbon cable Figure 6 40 Installing the LCD Module Ribbon Cables ...

Page 215: ...follow you will find diagrams of the Workstation 4 and Workstation 4 LX I O Panel connectors and hook up cable schematics A description of how each cable or connector is used is provided In this appendix IO Panel Connectors A 2 System Board Connectors A 7 LCD Customer Display Cables A 8 Hook up Cables A 10 ...

Page 216: ... Workstation 4 and the Workstation 4 LX two RS422 or RS232 configurations are supported All modes are configured by the POS application and detailed in the following pages IDN The IDN mode is the most popular configuration used to drive IDN printers This configuration is available on both the WS4 and WS4 LX System Boards and is shown in Figure A 1 below Figure A 1 RS422 A and RS422 B Ports Configu...

Page 217: ...This configuration is rarely used and is not supported by the WS4 LX System Board Figure A 2 The RS422 A Port in LCC mode WS4 Only RS232 The RS422 A and RS422 B ports include a basic Transmit Receive RS232 interface on pins 1 and 6 Hardware handshaking lines are not available This configuration is available on the WS4 and WS4 LX System Boards and is shown in below Figure A 3 The RS422 A and RS422 ...

Page 218: ...The pin out for the modular Ethernet port is shown in Figure A 4 below Figure A 4 10 100 1000 Ethernet Connector Diagram RS232 Connector A single DB9F RS232 connector assigned to COM1 is available on both the Workstation 4 and Workstation 4 LX System Boards The pin out is shown below Figure A 5 DB9 RS232 Connector Diagram ...

Page 219: ...Connectors Cash Drawer 1 and 2 Connectors The Cash Drawer Connectors shown in the illustration below apply to both the Workstation 4 and Workstation 4 LX Figure A 6 Cash Drawer Connector Diagram PS2 Mouse Keyboard Connectors Figure A 7 PS 2 Mouse and Keyboard Connector Diagrams WS4 Only ...

Page 220: ...This I O port connector is capable of driving a pole mounted customer display Note Workstation 4 System Boards AB28 F and AB28 G do not include an RX line System Boards AB28 I ABRD36 and ABRD86 use the connector pin out shown on the right side of the illustration below Figure A 8 WS4 and WS4 LX Customer Display Connector Diagram ...

Page 221: ...ctor available on the Workstation 4 LX Mag Stripe Reader Connector Figure A 9 displays the system board RJ45 connector used for attaching the Mag Stripe Reader to the Workstation 4 Left and Workstation 4 LX Right Figure A 9 System Board MSR Connector WS4 and WS4 LX USB Flash Drive Connector Figure A 10 shows a pin out diagram of J5 the ABRD86 System Board USB Flash Drive Connector available only o...

Page 222: ...s shown in Figure A 11 This cable mates with the cable from the LCD customer display assembly shown in Figure A 12 Figure A 11 System Board to Rear LCD Customer Display LCD Customer Display Assembly Interface Cable A diagram of this interface cable is shown in Figure A 12 This cable is used for both the Rear and Pole versions of the Customer Display When the LCD customer display is attached direct...

Page 223: ...CD Customer Display Interface Cable Pole LCD Customer Display This cable shown in Figure A 13 is supplied with the Pole LCD Customer Display kit It is connected between the IO Panel 4 pin mini DIN connector to the cable from the LCD Display as shown in Figure A 12 Figure A 13 Remote Pole LCD Customer Display Assembly ...

Page 224: ... RS232 from the RS422 A and RS422 B Ports WS4 and WS4 LX Figure A 14 shows a cable diagram that converts the RS232 signals from the modular RS422 A and RS422 B ports to a DB9 male connector This cable is available from MICROS by ordering P N 300319 102 Figure A 14 RS422 A and B Port to DB9 Male Figure A 15 shows a cable diagram to adapt to the RS422 A and RS422 B ports to a DB25 connector Figure A...

Page 225: ...A 11 Connector and Cable Diagrams Hook up Cables 8 Pin to 6 Pin Hook up RS422 Cable 300319 001 This cable brings out the RS422 signals from the RS422 A or RS422 B ports to a 6 pin connector Figure A 16 8 Pin to 6 Pin RS422 Hook up Cable Diagram ...

Page 226: ...A 12 Workstation 4 and 4 LX Field Service Guide Connector and Cable Diagrams Hook up Cables ...

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