Lumisys LUMISCAN ACR-2000 Service Manual

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ACR-2000

UMISCAN

ERVICE

ANUAL

UMISYS

P/N 0070-715

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Page 1 ACR-2000 UMISCAN ERVICE ANUAL UMISYS P/N 0070-715...
Page 2 ACR-2000 UMISCAN ERVICE ANUAL P/N 0070-715, Rev 02 JANUARY, 2000...
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Page 4 Copyright 1999. All rights reserved. Trademarks Lumisys, LUMISCAN 20, LUMISCAN 50, LUMISCAN 75, LUMISCAN 85, LUMISCAN 85LF and ACR-2000 are the trademarks of Lumisys. All other trademarks are the property of their respective owners, and are hereby acknowledged. Warranty One (1) year parts warranty.
Page 5 LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION This page intentionally left blank _______________________________________________________________________________...
Page 6: Table Of Contents
LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION TABLE OF CONTENTS _______________________________________________________________________________ INTRODUCTION Overview............................v Reference Documents ........................vi Safety Information........................vii PRE-INSTALLATION ......................1-1 LUMISCAN INSTALLATION ....................2-1 SYSTEM POWER-UP AND OPERATION ................3-1 THEORY OF OPERATION....................... 4-1 SERVICE ADJUSTMENTS....................... 5-1 PERIODIC MAINTENANCE ....................
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Page 8: Overview
This document contains a basic technical overview of the LUMISCAN ACR-2000. The optics, digital hardware, and software subsystems are explained, as well as the systems' functionality and general user operation.
Page 9: Reference Documents
LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION REFERENCE DOCUMENTS LUMISCAN ACR-2000 Reader and Eraser Operator’ s Reference Guide P/N 0070-711 LUMISCAN ACR-2000 Service Manual P/N 0070-715 LUMISCAN LSDT Film Digitizer / ACR-2000 Reader Configuration Guide P/N 0071-434...
Page 10: Safety Information
The LUMISCAN ACR-2000 incorporates a Red >15mw high-power solid-state laser diode. The covers on the LUMISCAN ACR-2000 protect the user from direct exposure to laser light. These covers will protect a user only if they are properly installed when the system is being used. Covers must be removed and replaced by properly trained personnel.
Page 11 LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION FIGURE I-1 LABLES Figure I-2 Label Locations viii...
Page 12 VOLTAGES WHICH CAN SHOCK, BURN OR CAUSE DEATH. This equipment must be serviced by persons properly trained and certified by Lumisys. DO NOT operate the LUMISCAN ACR-2000 with a damaged power cord. Use of an extension cord is not recommended.
Page 13 LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION LUMISCAN ACR-2000 SYSTEM SPECIFICATIONS SCAN SIZE 18 x 24 to 35 x 43 cm PIXELS PER LINE 2048 10" to 14" SCAN RATE 50 lines/second GREY SCALE RESOLUTION 12 bits (4096 levels) INTERFACE ISA Interface Card With...
Page 14: 1.0 Pre-Installation
The LUMISCAN ACR-2000 operates at 120 VAC for domestic units. International units operate at 220/240 VAC. To change the voltage of the LUMISCAN ACR-2000 READER, follow the procedure in SECTION 2.0 of the Service Manual. The ACR-2000 ERASER is permanently configured for 120VAC or 240VAC.
Page 15 Flooring should be tile and linoleum only. Carpeting or rugs should not be in the room. Physical requirements The LUMISCAN ACR-2000 weighs over 75 pounds. It is important the system is placed on a table or stand that can provide adequate and level support.
Page 16 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 2.0 INSTALLATION ___________________________________________________________________ LUMISCAN ACR-2000 INSTALLATION ___________________________________________________________________ Unpacking Instructions NOTE INSTALLATION SHOULD NOT BE ATTEMPTED UNLESS THE SERVICE ENGINER HAS BEEN FACTORY TRAINED WARNING THE LUMISCAN ACR-2000 READER WEIGHS OVER 75 POUNDS. IT REQUIRES TWO PEOPLE TO SAFELY LIFT AND MOVE IT.
Page 17 This can be checked by looking at power configuration panel which is located just to the right of the power entry plug next to the on/off switch in the rear of the machine. The LUMISCAN ACR-2000 READER is set for 120 VAC for domestic units. See Figure 2-1.
Page 18 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 2.0 INSTALLATION Figure 2-1 Power Switch Location...
Page 19 Data Control Board unless a different PC is used. Note2: If a replacement DCB is to be installed in a PC supplied by Lumisys, the PC will likely be set to use certain resources for the DCB. These likely resources are IRQ 7, Mem Seg D800, and Base I/O 100.
Page 20 AC outlet. Driver Installation To operate, the LUMISCAN ACR-2000 READER software requires you to have WinNT 4.0 installed on your PC and at least 2.0 megabytes of hard disk space available for the creation of a directory and transfer of files from the floppy installation disk. Additional disk space will be required to save digitized images on the disk.
Page 21 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 2.0 INSTALLATION NOTE If, when the driver loads, no CLUT/CAL files are found or multiple CLUT/CAL files are found in the root , the driver will default to a 1:1 Correction LUT and no CAL LUT and it will audibly beep.
Page 22 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 2.0 INSTALLATION Copy the CLUT file (CLTXXXXX.DAT) from the floppy distribution disk into the directory, ‘ \SystemRoot\system32\drivers’ . Use the “LSDT for Windows NT Control Panel” (see below) to enter this filename into the LSDT section of the Registry.
Page 23 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 2.0 INSTALLATION 2.3.5 Software Installation Tips Windows NT driver disk 2.00 and later 1. It is necessary to have a “Density Correction Lookup Table” installed to achieve accurate density tracking. This file is located on the installation floppy disk. The file format is “CLTXXXXX.DAT”...
Page 24 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 2.0 INSTALLATION 4. The Digital Control Board uses three resources that need to be free. These are Segment Address, IRQ, and Base I/O Address. One, two, or all of these resources can be changed if necessary.
Page 25 _________________________________________________________________ Power-Up The power switch on the LUMISCAN ACR-2000 READER is located in the lower left corner of the right side panel of the scanner. Two LEDs, one above the other, are located in the lower right corner of the front panel. The top LED is labeled Power, while the bottom LED is labeled SCAN.
Page 26 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 3.0 SYSTEM OPERATION Plate Handling and Loading Processed Phosphor Plates that are to be scanned should be handled carefully to avoid introducing scratches, fingerprints and/or static. The physical process by which storage phosphors work does not change or, “wear out”, over time.
Page 27 You may also use the sample scanning program called "SCANFILE.EXE", which is located in the “C:\LSDT32\TOOLS” directory. From the command prompt type "SCANFILE <cr>". A image plate will be digitized in a Lumisys format using all default parameters and the results placed in a file called LSDT.IMG. WARNING THIS EQUIPMENT EMPLOYS A LASER.
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Page 29: Theory Of Operation
The LUMISCAN ACR-2000 READER is a basic scanner with no image plate handling and is intended to be used in a darkened room environment. The image plate must be removed from the cassette and placed into the feed slot in order to be scanned.
Page 30 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 4.0 THEORY OF OPERATION System Configuration The configuration of the LUMISCAN ACR-2000 READER includes optics, electrical and power supply assemblies, PCAs for scanner control and data acquisition, and a plate transport assembly. Optical Beam Path The READER contains a laser, laser power supply, fixed optics and mirrors, a scanning galvanometer, light detection system and a electronics subsystem for control.
Page 31 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 4.0 THEORY OF OPERATION Digital and Electrical Systems The electrical subsystem of the LUMISCAN ACR-2000 READER consists of the Data Control Board, (DCB), that is located in a PC-type host computer an interconnecting cable to the LUMISCAN, and the scanner, which houses six printed circuit boards.
Page 32 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 4.0 THEORY OF OPERATION 4.4.5 Indicator Board The Indicator Board contains two LED indicator lamps which are used to signal scanner power ON and SCAN status. The SCAN indicator is turned on only while a scan is in process; it also blinks whenever the plate is in the optical path.
Page 33 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 4.0 THEORY OF OPERATION 4.4.8 Power Distribution The ACR-2000 READER contains four integral power supplies. One is a high voltage supply for the PMTs. A triple output linear supply provides + 12 volts and +5 volts. One dual linear + 15 volt supply and one dual linear + 12 volt supply.
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Page 35 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 4.0 THEORY OF OPERATION 4.5 Sub-System Operation 4.5.1 DATA CONTROL BOARD (DCB) The DCB is a standard size PC/XT board occupying 32K bytes of memory space and 24 bytes of I/O space. It supports 8-bit data transfers only and has multiple interrupt capability. The physical memory consists of a single, 72-pin SIMM with 16MB.
Page 36 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 4.0 THEORY OF OPERATION Control During Scanning During the scanning process the DCB generates the timing and synchronization signals and transfers the image data into image memory as it becomes available. There are three clock generators and three counters: Scan Clock, Film Clock, Pixel Clock, Delay to 1st Pixel count, Pixels per Line count, and Lines per Image count.
Page 37 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 4.0 THEORY OF OPERATION 4.5.2 DATA ACQUISITION BOARD (DACQ) The DACQ board performs all of the signal conditioning and data acquisition functions, including calibration and output table lookup. In addition it generates the Galvo sweep control waveform and provides the Film Motor control and drive.
Page 38 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 4.0 THEORY OF OPERATION In all modes the acquisition process ends with the writing of data into the output register and assertion of the signal DATAVAIL to the DCB. The DCB then transfers the data into the image memory depending on the following;...
Page 39 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 4.0 THEORY OF OPERATION X Only and XY Pixel Averaging Modes The ACR-2000 READER Data Acquisition board is capable of averaging pixel values together, either in X only or in both X and Y. The mode bits are selected in the DACQ CSR. In X-only mode one data value is produced for each two pixel clocks (one DATAVAIL per two PIXTRIGs).
Page 40 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 4.0 THEORY OF OPERATION If the CTR jumper is off and the GIVENB bit is cleared then the position will be according the PARK switches, which consist of 6 DIP switches. The position will be equal to the switch value 0 through 4032.
Page 41 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 4.0 THEORY OF OPERATION 4.5.3 PMT PREAMPLIFIER The preamplifier is the interface between the PMT receiving the stimulated light from the collection chamber and the log processing circuits in the Data Acquisition PCA. The preamplifier serves as a current to voltage converter between these two assemblies.
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Page 43: Service Adjustments
LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS ____________________________________________________________________________ SERVICE ADJUSTMENTS _________________________________________________________________ This section covers the LUMISCAN ACR-2000 READER components that can be adjusted in the field. The following equipment is required for any alignment or adjustment performed in this section of the service manual. Requirements...
Page 44 LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS WARNING ACR-2000 READER Working with and around X-ray equipment and high-power lasers present risks if proper precautions are not taken. The X-ray equipment is housed in a lead-lined room. Never turn the X-ray on unless all personnel are outside of the room and the door is closed.
Page 45 Light Collection Chamber +/- 0.5 inches. If not, rotate the Galvo Motor or the Galvo Mirror to achieve center. Re-connect the Galvo PCA power. Go to the command prompt. Navigate to the Lumisys “tools” directory. Start the DDT menu. Start the Galvo by selecting option 20 from the DDT menu. Adjust the height and the tilt adjustment screws that are located on the folding mirror until the beam is horizontally centered and vertically level in the Light Collection Chamber opening.
Page 46 LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS Scan Linearity Adjustment NOTE This Adjustment Must be done in a Darkened Room NOTE Adjustment of the Scan Linearity is rarely necessary. For various reasons, the Linearity Test can sometimes provide a false indication of failure. Test results which are slight out of tolerance are probably genuine.
Page 47 LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS 5.3.2 Place the 14” Linearity Adjust Pattern (P/N 0070-966) in the input slot with the vertical lines facing the unit and the widest red bar towards the abort button. 5.3.3 From the “tools” directory, enter LNADJDT at the command prompt. Enter the Serial Number of the reader.
Page 48 LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS 5.3.7 A properly positioned beam will show all 14 bars with a slight gap on either side. Position the beam properly using the following chart. ( Note: The plot window does not update in real time to show beam position changes.
Page 49 LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS 5.3.20 Preliminary Scan Adjustment Method A 5.3.20.1 Using an ohmmeter, adjust the following potentiometers to the values listed in the chart. For orientation, observe the PCA’ s so that the PCB writing is from left to right.
Page 50 LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS 5.3.21.5 Visually observe the laser sweep. If the laser sweep extends 1.5 +/- 0.5 inches past the light Collection Chamber opening on the left side and 2.5 +/- 0.5 inches past the light Collection Chamber opening on the right side, then proceed to 5.3.21.6.
Page 51 LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS Connect the DVM to TP1 of the PMT Preamp PCA, with the black (-) lead on the pin toward the bottom. millivolts, Adjust R8 on the PMT Preamp PCA to obtain a voltage of +0.0 + 0.1...
Page 52 LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS 5.4.3 PMT Output Voltage Adjustment and Reference Blue LED Adjustment The system must be adjusted so that the signal from a plate exposed at a standard X-ray dosage will give a consistent count level. This depends on the plate used, the laser power, the PMT sensitivity, and the alignment of the DACQ board.
Page 53 LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS 5.4.4 PMT Output Voltage Balancing 1. Place a well erased 14 x 17” image plate into a cassette. Expose with a dose of 4 mAs at 85 kVp, 71” SID. If a 1mm thick copper plate is available, position the copper plate over the x-ray emitter. This will provide a more uniform exposure.
Page 54 LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS 18. It is now necessary to make a new CAL Table. To do this proceed to 5.4.5 Calibration Table Generation. 5.4.5 Calibration Table Generation 5.4.5.1 Using NT Driver Disk prior to version 2.00.
Page 55 LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS 5.4.5.3 View Plot of the Calibration Table. 1. Go to the command prompt. 2. From “tools” directory, PL.EXE command plot WINNT\SYSTEM32\DRIVERS\CALXXXXX.DAT where XXXXX is the serial number of the ACR Reader. If necessary, hit the “a” key to auto scale the plot.
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Page 57: Periodic Maintenance
LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 6.0 PERIODIC MAINTENANCE __________________________________________________________________ PERIODIC MAINTENANCE ___________________________________________________________________ System Maintenance is classified in four categories, Daily Maintenance, Routine Maintenance, Periodic Cleaning and Periodic Gain Check. Daily Maintenance and Routine Maintenance are normally performed by the system operator and Periodic Cleaning and Periodic Gain Check are performed by a trained service engineer.
Page 58 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 6.0 PERIODIC MAINTENANCE 6.1.4 Clean area around the system daily. Check for dust. Routine Maintenance Maintenance Periods: 24 times every 12 months. 6.2.1 Cleaning Covers The outside covers of the ACR-2000 READER should be cleaned with a mild soap or detergent.
Page 59 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 6.0 PERIODIC MAINTENANCE CAUTION BE SURE TO USE PROPER ESD PRACTICE WHEN TOUCHING THE ACR-2000 READER WITH THE COVERS CAUTION DO NOT CLEAN THE GALVO MIRROR OR ROOF MIRROR EXCEPT AS A LAST RESORT AND UNDER THE...
Page 60 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 6.0 PERIODIC MAINTENANCE PMT Output Voltage Adjustment and Reference Blue LED Adjustment 1. Perform the PMT Output Voltage Adjustment and Reference Blue LED Adjustment as specified in Chapter 5 section 5.4.3.
Page 61: Diagnostics
LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 7.0 DIAGNOSTICS 7.0 DIAGNISTICS If a system failure occurs, it is necessary to diagnose the cause before effecting the repair. This section describes the diagnostic tools and techniques used to isolate various types of system failures.
Page 62 To activate the Laser, run the DDT.EXE program, which is located in the Lumisys “tools” directory. Then, select option 20, which turns the Laser on and makes it scan back and forth across the light collection chamber. If the Laser is not emitting light, the Laser Module needs to be replaced.
Page 63 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 7.0 DIAGNOSTICS This is an inverted signal with the highest amplitude at the bottom of the plot, which is a value of zero. If the amplitude is not near zero, as an example 500 or 1000, the Laser is not emitting enough light and needs to be replaced.
Page 64 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 7.0 DIAGNOSTICS 7.2.5 DI-2000 Self Test Failure If Autozero and AGC both fail, the PMTs are suspect. If Autozero fails, there may be too much ambient light in the room. If AGC fails, perform the PMT Output Voltage Adjustment and Reference Blue LED Adjustment which is in Chapter 5.
Page 65 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 7.0 DIAGNOSTICS 7.2.7 No Galvanometer Movement The most common cause of no Galvanometer movement is failed drive circuitry on the Data Acquisition PCA. Remove the AUX/IO connector from the Data Acquisition PCA to disable the PMT High Voltage Power Supply.
Page 66 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 7.0 DIAGNOSTICS 7.3 Diagnostic Programs This document outlines use of some of the diagnostic programs. The Diagnostics programs are used exclusively for diagnostics, testing, aligning and troubleshooting of the ACR-2000 READER. They are intended to be used by service engineers for diagnostic and test purposes only.
Page 67 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 7.0 DIAGNOSTICS 7.3.1 DDT.EXE Enter > DDT Enter one of the specified numbers (1 through 22, or 'q') at the command prompt. DDT VX.X <date> <time> 1. Scan File 11. Change Parameters 2. Read Data 12.
Page 68 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 7.0 DIAGNOSTICS Enter > 7 (Plot CAL table) - plots the DACQ CAL table. A normal CAL table will look somewhat like an irregular “M” shape. A screen must be scanned before a Cal curve is generated.
Page 69 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 7.0 DIAGNOSTICS Enter > 20 (Display Noise Value)- Enter > 21 (System Infor)- Detailed system information Enter > 22 (Set CR/Scan5 Mode) - Other commands you may enter (not specified by the DDT menu);...
Page 70 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 7.0 DIAGNOSTICS Test Lookup Table Load and Readback Function From the DDT menu choose 4. Load LUT. A list of choices will be displayed. Select 1 = 0:4095 12 Bit Lut. Select 15. Choose 5: Read LUT. Select 15 . All 4096 values (in hex) will scroll up the screen in lines of 16.
Page 71 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 7.0 DIAGNOSTICS 7.3.2 SCANFILE Scanfile using the following parameters: Pixels per line : 2048 Pixel depth : 12 bits/pixel Pixel format : LSB LUT format : Normal Filename : lsdt.img The command line for "SCANFILE" has the following format:...
Page 72 LUMISCAN ACR-2000 SERVICE MANUAL – SECTION 7.0 DIAGNOSTICS PMT Register /PMT: 0 through 255 Edges /NOEDGE /EDGE If the user would like to scan a screen into a file called image5.img using defaults, from the MS-DOS prompt type: "scanfile /f:image5.img"...
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Page 74: Replacement Parts
This section discusses the various components of the LUMISCAN ACR-2000 READER digitizer that can be replaced in the field. It also details the removal of the LUMISCAN ACR-2000 READER covers, along with component removal and replacement. Components which can be replaced in the field are called field replaceable units, or FRUs.
Page 75 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 8.0 REPLACEMENT PARTS __________________________________________________________ Sub-Assembly ADJUSTMENT __________________________________________________________ Optics PMT PreAmp PCA PMT Tubes Laser Optical, PMT Galvo PCA Linearity Galvo Motor Linearity Electronics DACQ PCA PMT, Linearity Pinch Rollers DC Drive Motor -None Power Supply...
Page 76 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 8.0 REPLACEMENT PARTS PMT PRE-AMP PCA REMOVAL The following tools will be necessary to remove the PMT system: 1. Flat blade screwdriver 2. Philips #2 screwdriver The PMT PreAmp PCA is located at the top of the Collection Cylinder (Figure 8-2).
Page 77 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 8.0 REPLACEMENT PARTS 3. Loosen the two 7/64” clamp screws recessed in the back side of the tower. Remove the PMT face first (from the bottom), being careful not to get fingerprints on the blue filter.
Page 78 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 8.0 REPLACEMENT PARTS 3. Special attention must be given to adding jumpers on JP2 and JP3 on the Laser Diode Driver board when removing the laser assembly, and removing these jumpers after the replacement assembly is installed. If these steps are not followed carefully, damage can occur to the laser diode.
Page 79 6. Place the red Lumisys QA test pattern in the reader such that a block set of three line pair patterns in the beam path. Notice that there are three distinct, side by side traces representing the three different line pair densities with three different amplitudes.
Page 80 Make sure the ferrule is still tight on the connector. 9. Scan the red Lumisys QA Test Pattern and view the image. The lines of tightest line pair pattern should be distinct, though some aliasing will be evident.
Page 81 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 8.0 REPLACEMENT PARTS Unplug the Galvo Motor cable from the driver board. Remove the four 7/64” hex-head screws holding the Galvo motor from the Galvo mount assembly. Be very careful not to scratch the replicating mirror.
Page 82 LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 8.0 REPLACEMENT PARTS 6. Without touching the mirrored surface, using the mark on the Post-it note as a reference, carefully rotate the replicating mirror until the beam spot is centered with respect to the collection chamber. Don’ t worry if the spot is not perfectly aligned along the y-axis (vertically bisecting the slot itself) and slightly above or below the mark.
Page 83: Schematics
ACR-2000 SERVICE MANUAL - SECTION 9 SCHEMATICS SCHEMATICS AND DRAWINGS PART NUMBER DESCRIPTION _____________________ __________________________ 0070-578 TREE, PRODUCT, LS135 0071-317 DIAG, AC & DC WIRING, LS135 0071-318 DIAG, SYSTEM INTCON & PWR DISTRIBUTION, LS135 0070-679 SCH, REF LED, SCRN PRES1, V2 0070-235 SCH, DCB3, V1, LSDT 0068-855...
Page 84 _________________________________________________________________ APPENDIX A: LUMISCAN ACR-2000 Reader JUMPER AND SWITCH SETTINGS ______________________________________________________________________________ Identifying your Data Control Board (DCB) There are three versions of the DCB in existence. The newer DCB3 has slightly different switch settings than the DCB1 or DCB2. Here’ s how to identify them:...
Page 85 The most significant bit of the address is controlled by switch position S15. Lumisys supplies a utility program, FINDMEM, which can be used to identify potential open address locations in the range A0000-EFFFF. FINDMEM has the following output format: C:\LSDT\TOOLS>FINDMEM...
Page 86 EMM386.EXE and your CONFIG.SYS Whichever DCB memory address is used, your CONFIG.SYS should be modified to exclude the DCB Memory Mapped Address range from use by EMM386.EXE. The following line is normally used: DEVICE=C:\DOS\EMM386.EXE NOEMS X=D000-D7FF Changing the BASE I/O ADDRESS Switch S1-6 is used to control the BASE I/O ADDRESS.
Page 87 Changing the MEMORY SIZE For DCB3s, switch S1-8 is used to specify the size of the installed memory: MEMORY SIZE S1-8 4 MBytes OFF 16 MBytes ON Appendix - 4...