IBM CF User Manual

CF Series Scanner

Maintenance

Manual

Firmware Rev. S27G and up

Scanner Serial Number

The information contained herein is the property of SCAN-GRAPHICS, Inc., and shall not be reproduced or copied, or used as the basis for the manufacture or sale of apparatus or service without the written approval of SCAN-GRAPHICS, Inc., first being obtained.

Scan-Graphics, Inc.

700 Abbott Drive Broomall, Pennsylvania 19008-4373 Part Number: A62950-6 Telephone: (610) 328-1040 Revision Number: 1 FAX: (610) 543-6257 Revision Date: 5/24/96 Email: support@scangraphics.com

CF Series Scanner Maintenance Manual (Firmware Rev. S27G and up)

1989-1996 Scan-Graphics, Inc.

All rights reserved. Printed in the United States of America. No part of this document may be used or reproduced in any form or by any means, or stored in a database or retrieval system, without prior written permission of Scan-Graphics, Inc.

The information contained herein is the property of Scan-Graphics, Inc., and shall not be reproduced or copied, or used as the basis for the manufacture or sale of apparatus or service without the written approval of Scan-Graphics, Inc., first being obtained.

TRADEMARK NOTICE

Scan-Graphics, ScanView, Scangraphics, ScanMark, FRIENDS, FriendsPlus, CF ScanServ, ScanServ, ScanEdit, ScanPlot, and CF Series Scanner are trademarks of Scan-Graphics, Inc.

IBM and DACU are registered trademarks of International Business Machines Corporation. DEC, MicroVAX II, MicroVMS, and DR11W are registered trademarks of Digital Equipment Corporation.

PATENT NOTICE

This product is manufactured under U.S. Patent 4631598, U.S. Patent 4972273, and other patents pending.

AGENCY APPROVALS

This product is listed by Underwriters Laboratories, Inc. as the following:

UL File # E125596

This equipment complies with the FCC Rules for a Class "A" computing device. Operation of this equipment in a residential area may cause unacceptable interference to Radio and TV reception requiring the operator to take whatever steps are necessary to correct the interference.

CF Series Scanner Maintenance Manual ________________

Preface

Purpose and Scope

The purpose of this manual is to provide the information necessary to keep the CF Series Scanner in proper working order through regular preventive maintenance and provide the required information for a trained electronics technician to effect repairs. This manual takes problem isolation and solution to the subassembly or board level.

Related Scangraphics Documentation

• CF Series Scanner User’s Manual (A62951-10) This manual is available to factory-trained service technicians for the maintenance, troubleshooting, and

repair of CF Series Scanners.

• ScanServ User's Manual (A65352-04) This manual is available to licensed users of ScanServ

personal computer to control the CF Series Scanner as a scan server.

Organization

The manual is organized into six sections and two appendices. The content of these divisions is as follows:

Section 1--System Overview

The System Overview provides a brief general discussion of the purpose and function of the subsystems comprising the CF Series Scanner. Physical and performance specifications are also listed here.

Section 2--Installation

This section contains the procedures necessary for unpacking, choosing a location for, setting up, and applying power to the scanner.

Section 3--System Description

This section goes into the details of the modules and components of the CF Series Scanner.

Section 4--Preventive Maintenance

This section lays out a regular program of maintenance which, if followed, w ill help keep the scanner trouble-free.

Section 5--Diagnostic Software

The program documented here tests the various modules of the scanner. It is accessible with an ANSI-type terminal or a PC with terminal emulation software.

- a Scangraphics' application program that allows a

Section 6--Adjustment, Calibration, and Replacement

Contained in this section are the various procedures for adjusting and calibrating the scanner components. It also covers replacement of some components. This treatment is task-oriented.

The two appendices are:

Appendix A--Terminal Setup

This appendix discusses settings required on terminals used with the CF Series Scanner.

Appendix B--Replacement Parts List

This appendix lists parts that may need replacement and their ordering numbers.

If You Have Questions

Should a question or problem arise that is not addressed in this or one of the SCAN-GRAPHICS scanning publications, supervisors may contact SCAN-GRAPHICS, Inc. between 8:00 A.M. and 4:30 P.M. E.T., Monday through Friday.

If you are calling to report a problem, be sure to have at hand error messages, printouts, or documents which sequence the events leading up to the problem. The more specific the information, the faster the problem can be resolved.

Contact: SCAN-GRAPHICS, Inc. 700 Abbott Drive Broomall, Pennsylvania 19008

Telephone: (610) 328-1040 FAX: (610) 543-6257 Email: support@scangraphics.com

Table of Contents

Preface Table of Contents Warranty Revision Record

1 CF SERIES SCANNER: FEATURES AND SPECIFICATIONS

1.1 FEATURES

1.1.1 User Interface

1.1.2 Critical Calibration

1.1.3 Advanced Image Processing

1.1.4 Multiple Resolution

1.1.5 Preview Display Monitoring (option)

1.1.6 Diagnostics

1.1.7 Construction

1.2 SPECIFICATIONS

1.2.1 Functional Specifications

1.2.1.1 Scan Speed

1.2.1.2 Resolution

1.2.1.3 Accuracy/Repeatability

1.2.1.4 Imager Sensor

1.2.1.5 Transport

1.2.2 Input Characteristics

1.2.3 Physical Specifications

1.2.4 Power Specifications

1.2.5 Environmental Specifications

1.3 MAJOR SYSTEMS OF SCANNER

1.3.1 Scanner Control System

1.3.2 Document Transport System

1.3.3 Document Illumination System

1.3.4 Camera System

1.3.5 Data Handling System

1.3.6 Display System (optional)

1.3.7 User Interface System

1.3.8 Power Supply System

1.3.9 Ventilation System

2 INSTALLATION

2.1 UNPACKING

2.2 SETUP

2.2.1 Document Catch Installation

2.2.2 Environmental Concerns

2.2.2.1 Site

2.2.2.2 Airflow

2.2.2.3 Ambient Light

2.2.2.4 Vibration

2.2.2.5 Temperature

2.2.2.6 Humidity

2.3 CONNECTIONS

2.3.1 A.C. Power

2.3.2 Video (Optional)

2.3.3 Host/Local Control and Diagnostics Terminal

2.4 POWER-UP

2.4.1 Check Line Voltage

2.4.2 Check Power Supply Voltage (Recommended)

2.5 SYSTEM CHECK

2.5.1 Check Line Splice

2.5.2 Check Merge

2.6 DE-INSTALLATION

3 SYSTEM DESCRIPTION

3.1 MAJOR SYSTEMS OF SCANNER

3.1.1 Scanner Control System

3.1.2 Document Transport System

3.1.3 Document Illumination System

3.1.4 Camera System

3.1.5 Data Handling System

3.1.6 Display System (Optional)

3.1.7 User Interface System

3.1.8 Power Supply System

3.1.9 Ventilation System

4 PREVENTIVE MAINTENANCE

4.1 DAILY

4.2 MONTHLY

4.2.1 Clean Filters

4.2.2 Clean Camera Lenses

4.3 ANNUALLY

4.3.1 Clean CCD Camera

4.3.2 Check Power Supply Voltages

4.3.3 Replace Lamps

4.3.4 Recalibrate Scanner

5 ON-BOARD DIAGNOSTIC SYSTEM

5.1 DIAGNOSTICS TESTS

5.1.1 (1) : Set Global Parameters

5.1.2 (2) : Perform System Initialization

5.1.3 (3) : Parameter Backup

5.1.4 (4) : Set Motor Speed

5.1.5 (5) : Splice Counts

5.1.6 (6) : Focus and Magnification

5.1.6.1 Focus

5.1.6.2 Magnification

5.1.7 (7) : IP LUT

5.1.8 (8) : Merge and Splice Adjustment

5.1.8.1 Line Splice Adjustment

5.1.8.1.1 Adjusting Line Splice Mechanically

5.1.8.1.2 Adjusting Line Splice Electronically

5.1.8.2 Merge Adjustment

5.1.9 (9) : Autosize Parameters

5.1.10 (A) : Set CCB Registers

5.1.11 (B) : Test Frame Grabber

5.1.12 (C) : Test I/O Board

5.1.13 (D) : Page Offsets

5.1.14 (E) : Camera System Diagnostics

5.1.14.1 (E) : Exposure Memory

5.1.14.2 (NE) : Normalize Exposure

5.1.14.3 (G) : Gain Memory

5.1.14.4 (NG) : Normalize Gain

5.1.14.5 (D) : Display Calibration Memory

5.1.14.6 (F) : Fill Calibration Memory

5.1.14.7 (T) : Take Line

5.1.14.8 (Q) : Take Qualified Line

5.1.14.9 (A) : Autotake

5.1.14.10 (V) : Video Board Reset (Not used)

5.1.14.11 (L0) : Lights Off

5.1.14.12 (L1) : Lights On

5.1.14.13 (U) : Uniformity Check (Not used)

5.1.14.14 (K) : Calibration Check

5.1.14.15 (M) : Mirror Control

5.1.14.16 (T) : Test Pattern Control

5.1.14.17 (Y) : Camera Delay (Factory Use ONLY)

5.1.14.18 (C) : Calibration Memory Test

5.1.14.19 (R) : Camera Response Curves

5.1.14.20 (H) : Histogram

5.1.14.21 (X) : Exit

5.1.15 (F) : Resolution Control

5.1.16 (G) : Document Sizes

5.1.17 (H) : Run Self Tests

5.1.18 (I) : Restore NVRAM

5.1.19 (J) : Binary Filter Parameters

5.1.20 (K) : IP Averager LUT

5.1.21 (L) : Autocalibration

5.1.22 (M) : SCSI Buffer Parameters

5.1.23 (X) : Exit

5.2 SAVING PARAMETER CHANGES TO NON-VOLATILE MEMORIES

5.2.1 Pixel Correction and Exposure Values

5.2.2 System Parameters

6 REPLACEMENT : COMPONENT AND SUB-ASSEMBLY

6.1 Task -- Removing Scanner Covers and Panels

6.2 Task -- Belt Replacement and Tension Adjustment

6.3 Task -- Lamp Installation and Replacement

6.4 Task -- Replacement of White Background

6.5 Task -- Camera Assembly Removal and Replacement

6.6 Task -- Camera Calibration

6.6.1 Video Board Adjustment

6.6.2 Camera Board Offset

6.6.3 Exposure Calibration

6.6.4 Gain Calibration

6.7 Task -- Checking and Adjusting Voltages

6.8 Task -- Fan Replacement

6.9 Task -- Filter Cleaning and Replacement

A TERMINAL SETUP

A.1 Using The Windows Terminal Emulator A.2 Saving The Setup A.3 Host Serial Cable Connections

B REPLACEMENT PARTS LIST



Scangraphics warrants its Scanner Products against defective workmanship and materials for a period of ONE (1) YEAR from date of shipment. Software and MK35 Products are warranted for a period of Ninety (90) days from date of shipment.

Scangraphics must be advised in writing, during the warranty period, of any defect or non-conformity within thirty (30) days after discovery of defect. Products or components thereof shall not be returned for inspections, replacement, or repair without the Buyer having first obtained a specific Return Material Authorization (RMA) number from Scangraphics, AND Scangraphics shall have the final determination as to the existence and cause of the defect. Authorization to return defective product must be received from the factory prior to shipping the Product.

The Buyer shall bear the expense of returning the Product to the factory with the subsequent return shipment charges paid for by Scangraphics if, in the event such defect or non-conformity is established by Scangraphics. Air filters, fuses, and lamps are excluded from the provisions of this warranty. Scangraphics assumes no responsibility for obsolescence of its Software. Software is furnished "AS IS" without warranty of any kind and without any representation regarding quality, performance, or suitability. Scangraphics does not warrant the Software free from defects or that the support services will correct all defects which might exist. Scangraphics warrants for the benefit only of the Buyer, that the Scangraphics Software shall conform in material respects to the Scangraphics Software User's Manual provided by Scangraphics, except with respect to subsequent modifications, if any, made by the Buyer.

This WARRANTY shall not apply to any Product or parts thereof rendered defective by negligence, accident, or subjected to electrical, thermal, or mechanical conditions in excess of the maximum values established by Scangraphics specification; or misuse in handling, transportation, storage; or by performance of repairs, installation, or alterations outside the factory except when performed by Scangraphics accredited service representatives. Scangraphics reserves the right to inspect the Product on the premises of the Buyer or the third party thereof. Inspection or repair at any location other than the Scangraphics factory if carried out by Scangraphics at the request of the Buyer shall be at the then current published repair service labor rates plus reimbursement of applicable travel costs. Scangraphics may, however, at its sole option, perform repair of Products in the Buyer's or third party's plant at Scangraphics' expense.

Scangraphics reserves the right to make changes, additions, or improvements in its Products without assuming any obligation to incorporate such change, addition, or improvement on its Products previously manufactured.

Scangraphics shall not be liable to the Buyer or any third party for any loss of production time or profits, or any consequential damages whatsoever resulting from use of the purchased product; or any failure in the performance of other product to which the purchased product is connected; or the functioning of an entire system, or parts of any parts of any system of which the purchased product may be a part, including the effect that other parts of such system may have upon the purchased product. Scangraphics

sole and exclusive remedy and entire liability here

under shall be the repair or replacement of component parts or software proving defective, and limited to the value of the product subject to the remedy regardless of the form of action whether it is in contract or in tort including negligence.

Scangraphics MAKES NO REPRESENTATION OR WARRANTY OTHER THAN THOSE SET FORTH IN THIS AGREEMENT. THE WARRANTY STATED HEREIN IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY EXPRESS OR IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, AND SUCH WARRANTY CONSTITUTES THE ONLY WARRANTY MADE BY Scangraphics WITH RESPECT TO THIS AGREEMENT OR THE PRODUCTS, ARTICLES, MATERIALS, REPLACEMENT PARTS, OR SERVICES TO BE SUPPLIED HEREBY. Scangraphics SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND.

Revision Record

Rev. No. Date Action

0 12-10-95 Original draft. 1 05-24-96 Added sections 1-4 and Appendices A & B

1 SYSTEM OVERVIEW

The CF Series Scanner is a highly versatile data capture device, providing choices in speed and resolution and producing high quality data. It also allows a choice between using a fixed threshold or an adaptive threshold. An adaptive threshold takes into account variations in the shading of the media to yield consistently good results, even from less than optimal documents. See Figure 1-1 for an illustration of the scanner.

SCAN-GRAPHICS accomplished this in a way which makes the CF Series Scanner as easy to use and maintain as possible. Care has been taken in the design and manufacture of the unit to build in a strength which will keep the scanner operating reliable for years.

The CF Series Scanner can accommodate documents with widths up to 44 inches (the maximum active scan area is 43 inches). The scanner does not limit the length of the document.

Although the technology employed by the CF Series Scanner is very complex, its function can be described in quite simple terms. It consists of a set of cameras focused on a narrow window; lamps to illuminate the document; a transport system which moves the document past the window; and the electronics to convert the data captured by the cameras into a useful form.

1 CF Series Scanner: Features and Specifications

This chapter provides a brief overview of the features available and the specifications that apply to the various CF Series Scanner models.

1.1 Features

The CF Series Scanners offer a wide range of features that permit the user to set up an ideal configuration for today's needs as well as providing the capability to adapt to new needs in the future.

User Interface

• Operable from host CPU through software

• Operable from scanner keypad (option)

Critical Calibration

• Electronic alignment of Y-axis (merge)

• Electronic alignment of X-axis (splice)

Advanced Image Processing

• Speckle Removal

• Gap Filling

• Patented Local Area Adaptive Thresholding with Limit Option

• Contrast Enhancement

• Polarity reversible to scan both positive and negative images

• Image mirroring

Multiple Resolution

• Available resolutions range from 1600 to 100 dpi

Refer to Table 1-A for available resolution values.

• Patented True Resolution Control, using the averaging method of eight-bit video data to

avoid dropping pixels

• Up to eight resolutions for the CF 1000/44

Preview Display Monitoring (option)

• High-resolution Preview Display for precise monitoring of image quality

• Real-time monitoring of the captured image on a scrolling display

• Zoom-in, zoom-out, and pan capabilities

• Echo Scan

Echo Scan is a special feature that allows intermittent repetitive scanning of specific image areas. It rescans the document area visible in the Preview Display repeatedly, forward and backward, until you give the signal to continue scanning the rest of the document. With

Echo Scan, you can fine tune the scan parameters for the best possible image quality in all areas of the document.

Diagnostics

• Self-diagnostic tests are performed at power-up and on rebooting, unless manually

overridden.

• More powerful, menu-driven, internal diagnostic software is available for use by factory-

trained technicians.

Construction

• Solid construction based on the 1000 dpi model

• Casters for easy placement of the scanner

1.2 Specifications

The scanner is designed to operate in a typical office environment, with options available for different user needs.

Functional Specifications

• Scan Speed

Speed can range from 3.9 to 138.5 inches per minute, depending on the selected scan resolution. Refer to Table 1-A for a comparison of nominal speed to resolution. Interpolated resolutions are available through Scangraphics ScanServ ver 3.0.0 or above.

Output Scanning Speed (in inches per minute)

Resolution CF1000/44 CF500/44 CF400/36 CF300/44

1600 dpi 3.91 1000 dpi 6.2 11.12 - -

800 dpi 7.7 - 17.33 700 dpi 8.8 - - 600 dpi 10.3 - - 23.14 500 dpi 12.3 22.2 - 400 dpi 15.4 27.7 34.6 300 dpi 20.5 36.9 46.2 46.2 200 dpi 30.8 55.4 69.2 69.2 100 dpi - 110.8 138.5 138.5

1600 (true longitudinal) x 1600 (software interpolated lateral)

1000 (true longitudinal) x 1000 (software interpolated lateral)

800 (true longitudinal) x 800 (software interpolated lateral)

600 (true longitudinal) x 600 (software interpolated lateral)

Table 1-A: Nominal Scan Speed/Resolution Chart

• Resolution

CF1000/44

200 to 1000 dpi 1600 dpi (true longitudinal and interpolated lateral)

CF500/44

100 to 500 dpi 1000 dpi (true longitudinal and interpolated lateral)

CF400/36

100 to 400 dpi 800 dpi (true longitudinal and interpolated lateral)

CF300/44

100 to 300 dpi 600 dpi (true longitudinal and interpolated lateral)

• Accuracy/ Repeatability

.04% lateral

Note: Measured over 40 inches for CF Series 44 scanners, and over 35 inches for

CF400/36 scanner.

.04% longitudinal

Note: Measured over 20 inches for all CF Series scanners.

• Imager Sensor

Multiple CCD arrays

• Transport

Continuous feed

Input Characteristics

• Document Width

44 inches (111.8 centimeters)

• Active Scan Width

41 inches (104.1 centimeters) for models CF1000/44 and CF500/44 43 inches (109.2 centimeters) for model CF300/44 36 inches (91.4 centimeters) for model CF400/36

• Document Length

Unlimited (if operator-feed skew is zero)

• Document Thickness

.003 to .062 inches (.07 to 1.56 millimeters)

• Media Types

Media types include paper, mylar, vellum, sepia, bluelines, onionskin, cardboard-backed paste-ups, and photographic negatives-among others

Physical Specifications

• Height

41 inches (112 centimeters)

• Width

53 inches (132 centimeters)

• Depth

20 inches (56 centimeters)

• Weight

380 pounds (172 kilograms)

• External Finish

Pearl Gray, Pebble Gray

• Internal Finish

Anodized or painted (as appropriate)

Power Specifications

• Power

600 watts maximum

• Voltage

115 15% volts (a.c.) 220/240 15% volts (a.c.) (optional)

• Current

5.5 amps maximum (115 volts)

3.0 amps maximum (220/240 volts)

• Frequency

50/60 Hz ±5%

Environmental Specifications

• Operating Ambient Temperature

18 to 30C (64 to 86F)

• Non-Operating Temperature

5 to 40C (41 to 104F)

• Humidity

The scanner can operate at any humidity level, short of condensation.

• Other Environmental Limitations

The scanner is designed to operate in a typical office-type environment, although it can operate in more industrial settings-provided that the area is kept clean.

• Clearance

A one-foot air space should be allowed at the rear of the scanner to allow adequate air circulation.

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2 INSTALLATION

2.1 Unpacking

The CF Series Scanner comes in a corrugated paper crate mounted to a wooden pallet with four "air-ball" cushions on the bottom. On the inside are packing materials which prevent the unit from shifting around. Immediately upon receipt, check for shipping damage and report any found to the shipper and SCAN-GRAPHICS. When unpacking, discard no materials until you have accounted for the following contents of the box:

° Quantity 1 CF Series Scanner

° Quantity 1 Power Cord

° Quantity 1 CF Series Scanner Operations Manual (A62951-10)

° Quantity 1 Document Catch

In addition, those customers who purchase the optional display video monitor will receive a corrugated paper box containing:

° Quantity 1 Video Monitor

° Quantity 1 Power Cable

° Quantity 1 Video Cable

The easiest method to remove the scanner from the crate is with a fork lift and a lot of caution. A

ramp is provided as part of the packing to allow the CF Series scanner to be removed from the pallet by only two people. Remove the ramp from its storage location and attach it to the end of the pallet. One person will guide the scanner down the ramp while the other pushes from the opposite end. Do not attempt to lift the scanner by the top plate or lid.

2.2 Setup

2.2.1 Document Catch Installation

The document catch has three keyhole type slots. Insert the studs on the rear of the scanner (about an inch above the fan) into the three keyhole slots and push down firmly to seat them in the slots.

2.2.2 Environmental Concerns

The following conditions must be met to ensure acceptable working conditions for the scanner:

2.2.2.1 Site

The site has to be relatively dust free. The environment should also generate a low degree of static electricity.

2.2.2.2 Airflow

There must be at least one foot of clearance in the rear of the scanner to allow for proper airflow. Do not place the scanner near a heating panel or vent.

2.2.2.3 Ambient Light

In order to keep the light uniform on the document being scanned, no direct sunlight or bright lights should fall on the unit.

2.2.2.4 Vibration

Excessive vibrations in the room should be avoided in order for the delicate settings of the cameras to remain unchanged.

2.2.2.5 Temperature

The ambient temperature in the room should average between 18 and 30 degrees C (64-86 degrees F). The maximum ambient temperature for a non-working scanner must be between 5 and 40 degrees C (41-104 degrees F).

2.2.2.6 Humidity

The point of condensation should not be reached in the room.

2.3 CONNECTIONS

See Figure xx for an illustration of the connector panel on the back of the scanner showing the various points of connection for the following items. The appearance of the back panel may vary, depending on the type of interface ordered.

2.3.1 A.C. Power

Check the line voltage to ensure that it is the proper level for the unit (either 110 or 220, as ordered). Then connect the enclosed A.C. power cord to the scanner and to the wall outlet.

The 110 Volt model is not protected if it is connected to a 220 Volt circuit and major

damage will result.

2.3.2 Video (Optional)

The video connector is for the attachment of a cable from the scanner to the optional display monitor. It has a 15-pin D sub-miniature connector. It is on the back panel, just to the right of the Host Serial connector. Connect the other end to the monitor.

2.3.3 Host/Local Control and Diagnostics Terminal

The host serial control cable is attached to the scanner using this connector by means of a D-type sub-miniature 9-pin male connector. This connector is also used for installation of the local control and diagnostics terminal. Any ANSI-type terminal or personal computer with terminal emulation can be used for local control and diagnostics. See Appendix xx for terminal setup values. Only one source of control can be connected at any time.

2.4 POWER-UP

2.4.1 Check Line Voltage

If you have not done so already, check the line voltage to be sure it is at the proper level, either 110 V A.C. or 220 V A.C., before turning on the scanner.

2.4.2 Check Power Supply Voltage (Recommended)

The power supply voltages should be checked to make sure that the voltages did not change during shipment. This is quick and easy to do following the steps in task 6.7 (Checking and Adjusting Voltages) for all voltages except the +120 volt lamp power (which is not adjustable).

2.5 SYSTEM CHECK

2.5.1 Check Line Splice

See Section 5.1.8.1 for details. A specific test document must be used for doing this check.

2.5.2 Check Merge

See Section 5.1.8.2 for details. A specific test document must also be used for doing this check.

2.6 DE-INSTALLATION

To de-install the CF Series Scanner, remove the cables from the rear of the scanner and lift the document catch up and away from the scanner. If the scanner is to be shipped, replace the scanner in the crate in which it came and include all the packing material.

3 SYSTEM DESCRIPTION

The CF Series Scanner can accommodate documents with widths up to 44 inches (the maximum active scan area is 43 inches). The scanner does not limit the length of the document.

To provide a deeper understanding of the CF Series Scanner works, the remainder of this section will discuss the various systems that comprise the scanner in technical detail.

3.1 MAJOR SYSTEMS OF SCANNER

To provide a general overview of how the CF Series Scanner works, the remainder of this section will discuss the various systems that comprise the scanner.

3.1.1 Scanner Control System

The CF Series Scanner may be controlled by the host computer, by the optional keypad on the scanner itself, or a combination of the two.

Another option is the use of a separate "local terminal." Used primarily for diagnostic purposes, this ANSI-type terminal takes the place of the host computer. It is the only means of accessing the Diagnostics program.

Once initiated, the Central Processor (CPU) Board and the Camera Controller Board (CCB) control the functions of the CF Series Scanner for the most part.

1. The CPU Board controls the general operations of the electronics of the scanner, contains the firmware which operates the scanner, and other functions.

2. The Camera Controller Board (CCB) provides timing for all the other boards and handles the merging of the input data from the cameras. Other functions include setting the number of active cameras, the sequencing of the cameras, and document size. It also sends data from the scanner to the host or optional interface board in on-line scanning.

3.1.2 Document Transport System

The document transport system is comprised of a motor driver, a stepper motor, a set of pulleys, a set of belts, and two drive rollers. The Video Board controls the system. The motor driver operates a stepper motor. The stepper motor turns a set of pulleys connected by belts. The belts turn two drive rollers located on the bed of the scanner, which move the document past the scan window.

1. The Video Board passes control signals to the motor driver and receives signals from the document sensors.

2. The motor driver translates the control signals it receives from the Video Board.

3. The bi-directional stepping motor drives the document transport system.

4. A set of pulleys reduces the rpms.

5. Two timing belts connect the pulleys.

6. Two pulley-driven drive rollers, one on each side of the scan window, are located on the

bed of the scanner. Applying pressure against these two drive rollers are two free-turning rollers mounted in the lid of the scanner.

7. Three light sensitive sensors determine the position of the document.

3.1.3 Document Illumination System

The Document Illumination System employs one green florescent imaging lamp along with a ballast. The Video Board controls these. Their purpose is to shed an even stable light on the document.

1. The Video Board controls the imaging lamp.

2. One green florescent imaging lamp provides the light.

3. The florescent lamp operates with a 25 KHz high frequency solid state ballast, operated

on a linear voltage of 120 V D.C.

3.1.4 Camera System

The Camera System is comprised of the CCD Cameras, the Video Board, and the Calibration and Line Splice Board (CALSB).

1. The CF XXXX/44 employs from three to eight CCD cameras.

Model # of Cameras

CF300 3 CF400 3 CF500 4 CF1000 8

2. The Video board converts all video analog signals to digital signals and corrects for gain

and offset.

3. The Calibration and Line Splice Board (CALSB) splices the scanning line together,

camera by camera.

3.1.5 Data Handling System

In detecting data, the system simply distinguishes between black and white or dark and light. The number of data samples taken per inch determines the resolution of the scan.

The data handling system also includes several data formats as an option. For example, RLE (Run-Length Encoded), Group 4, and Greensheet. The standard output format of scanned data is 8-bit gray scale or thresholded binary bit stream.

1. The Image Processor Board (IP) provides a Spatial Compressor function that allows the scanner to sample documents at variable frequencies through the electronics.

2. The Image Processor Board (IP) also provides an Adaptive Threshold function that provides several choices in setting the threshold value.

3.1.6 Display System (Optional)

A display monitor is an option to the scanner to allow you to view data as it is scanned. This is very helpful in setting thresholds and other scanning parameters. This option requires an additional board -- the Display Board.

1. The optional Display Board provides a Display Compressor function that buffers data and reduces the image resolution to match the video display.

2. The Display Board also acts as a Frame Grabber that structures the pixels to a format usable by the video display.

3.1.7 User Interface System

The SCAN-GRAPHICS CF Series Scanner may be controlled by the host computer or by the optional keypad mounted on the scanner. A combination of both is often used.

Another option for the system is a control terminal which provides a third means of system control and the only way to access the diagnostics program.

3.1.8 Power Supply System

1. The CF Series Scanner operates on 110 or 220 V.A.C. (determined at the time of purchase).

2. A circuit breaker on the rear panel provides protection on the A.C. input line.

3. The scanner has a switching power supply which provides an output of +5 V.D.C. for both the front-end video camera system and the Multibus card cage.

4. The scanner has three linear power supplies which provide outputs of +12 V and -12 V

for both the front-end video camera system and the Multibus card cage; +46 V for the stepper motor driver; and +120 V for the illumination system.

3.1.9 Ventilation System

The logic boards, 100 Watt lamps, and power supplies produce significant amounts of heat.

1. A series of vents in the left side cover of the scanner allow air to enter the scanner for

cooling purposes.

2. A metal mesh air filter covers the air intake vent.

3. The scanner uses three cooling fans, one mounted on the back panel of the scanner, one

mounted on the bottom of the card rack and another one on the top of the power supply cover.

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4 PREVENTATIVE MAINTENANCE

4.1 DAILY

As a start-up check each day, inspect the scan window daily (or more often if conditions warrant it). If dirty, clean it using a clean soft lint-free cloth and glass cleaner. When cleaning the scan window, great care should be taken to not use so much glass cleaner that it could seep down the edge of the scan window glass. This could result in it accumulating on the underside of the window, drying, and leaving a residue that would require cleaning the underside of the scan window.

Also, each day, with the scanner powered-on, be sure all cooling fans are operating. It is very important that all these fans are operating. One fan is located on the back panel and two are inside the unit. One is mounted under the card rack and the other is mounted on the cover for the power supply assembly.

4.2 MONTHLY

4.2.1 Clean Filters

Once a month (or more often if conditions warrant it), remove the metal mesh filter located in the bracket on the left inside panel of the scanner. Wash the filters in warm water, air dry them, spray them all over lightly with filter spray (A64168), and reinstall them.

4.2.2 Clean Camera Lenses

Each month, clean the camera lenses with regular photographic camera lens brush or air duster. Be sure you do not hold the lens while cleaning.

4.3 ANNUALLY

Each year, on the anniversary of the initial installation, perform the following tasks in order.

4.3.1 Clean CCD Camera

Clean the CCD array on the camera, located in the center of the Camera Board with an air duster or cotton swab.

4.3.2 Check Power Supply Voltages

Open the front of the scanner cabinet, refer to the Figure of the Power Supply Assembly found in this manual and Section 6.7, and check the voltages at the test points on the power supply.

4.3.3 Replace Lamps

To assure adequate and consistent illumination of the document, replacement of the lamp annually is recommended. Depending on the amount of usage, however, replacement may not be necessary that often. If you decide to keep the lamp in longer, look for darkening around the ends of the tube. This indicates disintegration of the filament and the lamp should be replaced. The lamp replacement procedure is covered in Section 6.3.

4.3.4 Recalibrate Scanner

1. Every twelve months, recalibrate the scanner by adjusting the camera system's offset, exposure, and gain. See Section 5.1.14.

2. Check the line splice and merge and adjust if necessary. See Section 5.1.8.

3. Check the motor speed and adjust if necessary. See Section 5.1.4.

5 DIAGNOSTIC SOFTWARE

5.1 On-Board Diagnostic System

The Main Menu shown in Figure 5-7 is typical for a CF Series 1000 scanner. The Main Menus for the other CF Series Scanners are similar. The functions on the Main Menu are the same as those on the keypad and the scanner can be operated from either device.

M A I N M E N U

1 - Scan Off 3 - Set Document Size E 2 - Scan Mode Manual 4 - Filter Off 7 - Diagnostic Tests 5 - Tracking Off 8 - Set Resolution 1000 6 - Positive/Negative Image + Z - Display Zoom In up - Increase Threshold 32 H - Display Zoom Out dn - Decrease Threshold

X - Select Area R - Scan Direction Forward Y - Repeat Area G - Gray Scale Off S - Speed Full I - Fast In F - Binary Filter O - Fast Out

<- - Move Displayed Area Left -> - Move Displayed Area Right Ready

Figure 5-7 CF Series Scanner Main Menu

To access the Diagnostic Tests program form the Main Menu, press <7> and the menu illustrated in Figure 5-8 will appear. At this point, keypad control from the scanner is disabled until you exit the Diagnostic Tests program.

DIAGNOSTIC TESTS

--------------- 1 Set Global Parameters 2 Perform System Init 3 Parameter Backup 4 Set Motor Speed 5 Splice Counts 6 Focus and Magnification 7 IP LUT 8 Merge & Splice Adjustment 9 Autosize Parameters A Set CCB Registers B Test Frame Grabber C Test I/O Board D Page Offsets E Camera System Diagnostics F Resolution Control G Set Document Sizes H Run Self Tests I Restore NVRAM J Binary Filter Parameters K IP Averager LUT L Autocalibration M SCSI Buffer Parameters X Exit Ready

Figure 5-8 Diagnostic Tests Menu

Menus pop up in response to most choices on the Diagnostic Tests menu. Simply enter the desired value or parameter and the function will be performed or its menu will be accessed.

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