Lumisys LUMISCAN ACR-2000 User manual

P/N 0070-715
LUMISCAN ACR-2000
SERVICE MANUAL
LUMISYS

LUMISCAN ACR-2000
SERVICE MANUAL
P/N 0070-715, Rev 02
JANUARY, 2000

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LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION
i
___________________________________________________________________
FOREWORD
___________________________________________________________________
LUMISCAN ACR-2000 SERVICE MANUAL
P/N 0070-715 Rev 02
Proprietary Notice and Disclaimer
The information herein disclosed is the property of Lumisys. Information in this document is
subject to change without notice and does not represent a commitment by Lumisys to incorporate
changes or improvements in units previously sold or shipped. No part of this document may be
reproduced or transmitted in any form, electronic or mechanical, including photocopying and
recording, for any purpose other than the purchaser's own use without the express written permission
of Lumisys.
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.
For more information contact:
Lumisys
225 Humboldt Ct.
Sunnyvale, CA 94089
[phone]
[phone] FAX
November 1999

LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION
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LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION
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TABLE OF CONTENTS
_______________________________________________________________________________
INTRODUCTION
Overview......................................................................................................................................... v
Reference Documents.................................................................................................................... vi
Safety Information........................................................................................................................ vii
1.0 PRE-INSTALLATION.............................................................................................................. 1-1
2.0 LUMISCAN INSTALLATION.................................................................................................2-1
3.0 SYSTEM POWER-UP AND OPERATION.............................................................................. 3-1
4.0 THEORY OF OPERATION....................................................................................................... 4-1
5.0 SERVICE ADJUSTMENTS....................................................................................................... 5-1
6.0 PERIODIC MAINTENANCE.................................................................................................... 6-1
7.0 DIAGNOSTICS .......................................................................................................................... 7-1
8.0 REPLACEMENT PARTS .......................................................................................................... 8-1
9.0 APPENDIX A ............................................................................................................................. 9-1
10. SCHEMATICS ......................................................................................................................... 10-1

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LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION
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INTRODUCTION
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OVERVIEW
Product Features
The LUMISCAN ACR-2000 is a precision instrument designed to scan storage phosphor screens
and produce high quality x-ray images over a wide dynamic range with a high signal-to noise ratio.
This is accomplished by illuminating the screen with a laser as the screen is moved perpendicular to the
laser. The emitted light is collected, converted to an electrical signal and digitized to provide a 12 bit
resolution image .
*High Resolution
*High Positional Accuracy
A precision galvanometer scanner is utilized to produce a line scan that is perpendicular to the
direction of plate travel. This provides the positional accuracy required for high resolution
digitizing.
*Precision Optics
The optical system is designed to provide diffraction limited performance over the scan
envelope.
*Proprietary Light Collection System
This sets the LUMISCAN apart from other systems. The light collection system permits
collection angles of over 150 degrees at each point, allowing measurements to be extended to
low exposure areas. The collection system coupled with the detector electronics leads to a true
and precise digital representation of the image information on the plate.
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. Unpacking, hardware and software installation, system specifications, service adjustments
and troubleshooting are also included. This document is intended for users who may need to
understand the principles of operation for the LUMISCAN ACR-2000.

LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION
vi
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

LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION
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SAFETY INFORMATION
Conventions
DANGER
A DANGER indicates that personal injury may occur if the user
does not perform the procedure correctly.
CAUTION
A CAUTION indicates that damage to the product may occur if
the user does not perform the procedure correctly.
PRECAUTION
A PRECAUTION indicates that inconvenience to the user, such
as loss of data, may occur if the user does not perform the
procedure correctly.
NOTE
A NOTE indicates the information that should be called to the
attention of the user.
Be sure to read and understand the installation and operating instructions before applying power to the
LUMISCAN ACR-2000.
Laser Safety
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. If the covers have been damaged during
shipment or in usage, contact your local service representative for replacement covers.
DANGER
THIS EQUIPMENT EMPLOYS A LASER. LASER
RADIATION MAY BE PRESENT IF THE LUMISCAN
ACR-2000 IS OPERATED WITHOUT COVERS.
AVOID LASER BEAM. DIRECT EYE EXPOSURE TO
LASER LIGHT MUST BE AVOIDED.

LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION
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FIGURE I-1 LABLES
Figure I-2 Label Locations

LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION
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Electrical Hazards
WARNING
THIS EQUIPMENT IS OPERATED WITH HAZARDOUS
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.
This equipment must be properly grounded and power connections inspected to insure safe
operation.
FCC Notification
This equipment generates, uses, and can radiate radio frequency energy, and if not installed in
accordance with the installation instructions, can cause interference with radio communications.

LUMISCAN ACR-2000 SERVICE MANUAL - INTRODUCTION
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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
16 Mbytes Memory
DIMENSIONS 20.5"W x 13"H x 27"D
POWER REQUIREMENTS 100 to 120V, 50/60 Hz, 1.5 Amps
220 to 240V, 50/60 Hz, 1.0 Amps
TEMPERATURE 15 to 35 degrees C - operating
CONSTRAINTS -18 to 65 degrees C - non-operating
HUMIDITY 20 to 80% non-condensing
VIBRATION/ACCELERATION 3G Max (in shipping)
ALTITUDE 0 to 10,000 ft. - operating
WEIGHT 85 pounds (125 pounds shipping weight)

LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 1.0 PRE-INSTALLATION
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1.0 PRE-INSTALLATION
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1.1 Purpose
The purpose of this section is to provide the necessary information to efficiently configure a site for the
LUMISCAN ACR-2000 pre-installation. This includes environmental, electrical, and physical
parameters.
1.2 Voltage Requirements
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.
1.3 Environmental
There are several environmental factors to consider when installing the LUMISCAN ACR-2000
READER. The basic concerns are ambient light, humidity and temperature.
The ambient light in which the LUMISCAN ACR-2000 READER operates is extremely important. The
LUMISCAN ACR-2000 READER is a DARKENED ROOM CR system meaning the ambient light can
not exceed Exposure Value (EV) of 2. The room should be light enough to see where objects are, but no
lighter. Too much ambient light during a scanning operation will darken images and introduce image
artifacts.
Under Nocircumstances should the digitizer be placed in a darkroom with a film processor present. This
will Void the warranty.
The humidity and temperature limits are 20 to 80% non-condensing, and 15°to 35°C, operating,
respectively.
The room should have good ventilation.
Another factor to consider prior to installing the LUMISCAN ACR-2000 is dust. The LUMISCAN
ACR-2000 contains optics that are affected by dust. In a dusty environment, small amounts of dust and/or
dirt may enter the optics module. This dust can affect image quality. To prevent this potential problem, it is
recommended that the LUMISCAN ACR-2000 be installed and operated in a clean environment.
Do not install in a room where laundry or towels are stored. These add lint and dust to the environment

LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 1.0 PRE-INSTALLATION
1-2
Flooring should be tile and linoleum only. Carpeting or rugs should not be in the room.
1.4 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.
1.5 Connectivity
The room needs to have a 10 Base T network connection.

LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 2.0 INSTALLATION
2-1
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2.0 LUMISCAN ACR-2000 INSTALLATION
___________________________________________________________________
2.1 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.
THE LUMISCAN ACR-2000 READER USES A LASER FOR
SCANNING. DO NOT LOOK DIRECTLY AT THE LASER
LIGHT.
CAUTION
THERE ARE TWO BRACKETS ON THE BOTTOM OF THE
FRONT ENCLOSURE. THEY MUST NOT BE PLACED ON
THE TABLE BUT POSITIONED SO THEY HANG OVER
THE TABLE TO SUPPORT THE SCREEN EXIT TRAY.
THESE BRACKETS WILL BE DAMAGED IF PLACED ON
THE TABLE.
2.1.1 Tools Required
A 7/16" open end wrench and a large flat blade screw driver are required.
2.1.2 Unpacking the LUMISCAN ACR-2000 READER
Using the large screw driver, remove the clamp brackets from the bottom of the crate.
Lift the crate off the pallet.
Remove the accessories box.
Remove the plastic bag protecting the system.
Using the 7/16" open end wrench, remove the 4 bolts from each corner of the pallet underneath the

LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 2.0 INSTALLATION
2-2
LUMISCAN ACR-2000 READER.
With TWO PEOPLE, lift the LUMISCAN ACR-2000 READER off the pallet.
To install the LUMISCAN ACR-2000 READER, follow the Hardware Installation Procedures.
2.2 Hardware Installation
2.2.1 Tools Required
#1 flat-head screwdriver
#1 philips-head screwdriver
2.2.2 AC Voltage
You must verify that the LUMISCAN ACR-2000 READER is set up for the correct AC line voltage.
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.
If the LUMISCAN ACR-2000 READER is to be operated at 200/240VAC line voltage configuration
requires removing and inverting the Corcom fuse module, and the programming card must be changed.
Note: disconnect power before changing line voltages or fuses. First remove the plastic cover/fuse
module by using a small screwdriver to pry out the fuse module(See figure 2-1). Loosen the philips head
screw and remove and invert the fuse block and tighten the screw. Two each 1 Amp 250V 5mm x 20mm
Slo-Blo fuses should all ready be installed, if not install them. Next remove the programming card rotating
it until the desired voltage is pointing inward and rotate the voltage indicator to point outward and reinsert
the card. Replace the fuse module and ensure the indicator is pointing to the correct line voltage. The
LUMISCAN ACR-2000 READER will is now set for operation.
Note
The fuse in the LUMISCAN ACR-2000 READER for 100/200 volt operation is a 1.5 Amp 250/75 volt
Slo-Blo fuse (Lumisys Part Number 0065-513). The fuses used for 200/240 volt operation are 1.0 Amp
Slo-Blo fuse (Lumisys Part Number 0068-487).
The LUMISCAN ACR-2000 ERASER comes either in a 120VAC model or a 240VAC model.
2.2.3 Power Cable
The LUMISCAN ACR-2000 READER utilizes an international IEC grade connector for the power
cable. Systems are shipped with a standard NEMA 5-15 hospital grade cable. This cable requires
replacement depending upon the country of installation. Insert the female end into the input power socket.

LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 2.0 INSTALLATION
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Figure 2-1 Power Switch Location

LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 2.0 INSTALLATION
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2.2.4 Media Support Assembly
Fasten the Media Support Assembly to the top of the Front Enclosure.
2.2.5 Screen Exit Assembly
Place the Screen Exit Tray in the brackets on the bottom of the Front Enclosure.
2.2.6 Installation of Data Control Board (DCB)
The ACR-2000 Reader is controlled by a proprietary Lumisys Data Control Board in an IBM type PC.
The DCB is 8 bit ISA. The DCB uses three resources, IRQ, Mem Seg Addr, and Base I/O Addr.
Note1: The ACR-2000 product contains a pre-configured PC workstation. It is not necessary to install the
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.
It is recommended to set the DCB to these resources before installation. Please consult Appendix A for
the resource chart.
With power off, remove cover from the target PC or compatible(See Note below). Taking appropriate
anti-static precautions, remove the Data Control Board from the accessory box and install it in an 8 or 16
bit ISA slot. Secure the DCB in the slot and replace the covers.
The Data Control Board is factory configured to use IRQ 5, I/O Addresses 100-11F and has a 32
KByte window at hex address D0000-D7FFF. If these addresses conflict with your system configuration
they may be changed. Please see APPENDIX A for instructions on how to change the IRQ level, the I/O
address, or the 32 Kbyte window address.
NOTE
The minimum hardware requirements for the Host
computer is as follows:
CPU: Pentium II 266MHZ
RAM: 128MB
Operating system: Windows NT 4.0 with Service Pack 4 or higher
Microsoft Internet Explorer 4.01 or higher
2.2.7 Installation of Control Interconnect Cable
Remove the Control Interconnect Cable (a 37 pin, Male/Male, D-Subminiature cable) from the
accessories box. Connect one end to the Data Control Board the other end to the LUMISCAN ACR-
2000 READER and secure both ends using a small flat blade screwdriver.

LUMISCAN ACR-2000 SERVICE MANUAL - SECTION 2.0 INSTALLATION
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2.2.8 Installation of the ACR-2000 Eraser
Remove the ACR-2000 Eraser from its container. The ACR-2000 Eraser provides the means to return an
exposed phosphor plate to its ground state and ready for the next patients exam. The eraser can be
mounted on the wall by following the separate and included instructions or can be placed on a desktop near
an AC outlet.
2.3 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. Most plates require 2.5 to 10.5 Mbytes of disk space to store the digital image,
depending on the plate size and scanning resolution. (low quality 1K or high quality 2K)
The LUMISCAN ACR-2000 READER comes configured with an ISA interface. Lumisys provides
host computer support software for the LUMISCAN ACR-2000 READER configured with the ISA
interface.
2.3.1 Correction LUT Files
The Windows NT LSDT driver automatically loads a Correction LUT (CLUT) file during the driver
loading process. When shipped from the factory, this file is named CLTXXXXX.DAT where
XXXXX is the serial number of the reader the Correction LUT file pertains to. The CLUT file is
shipped on the distribution floppy disk. This file is used to calibrate the associated reader and should
be used with that reader only.
The CLUT file must be in a specific directory and its name must be specified in the LSDT section of
the Registry. Since the file name is specified, multiple CLUT files may be stored in the same
directory. See detailed installation instructions below.
2.3.2 DOS, Windows 3.x and Windows 95 and Windows 98 Driver Installation
To install the software, place the floppy distribution disk in drive A. From a MS-DOS prompt type
"a:install" and then follow the instructions. The installation software will create a directory on the
hard disk and transfer the required software from the floppy disk to the hard disk.
Copy the CLUT file (CLTXXXXX.DAT) from the floppy data disk into the root directory, C:\. Be
sure to remove any and all other CLUT files from the root. They can be stored elsewhere, just not in
the root.
Copy the CAL file (CALXXXXX.DAT) from the floppy data disk into the root directory, C:\. Be
sure to remove any and all other CAL files from the root. They can be stored elsewhere, just not in
the root.