Related Manuals for Colortrac 3 Series
Summary of Contents for Colortrac 3 Series
- Page 1 SERVICE MANUAL COLORTRAC LARGE FORMAT SCANNERS models 380 Gx Plus, 360 Gx Plus and 340 Gx Plus 380 Cx and 360 Cx Raising Lid Option...
- Page 2 Fax: +44 (0) 1480 464620 Colortrac Ltd makes no warranty with respect to this documentation and disclaims any implied warranties of merchantability or fitness for a particular purpose. Information in this document is subject to change without notice. Colortrac Ltd assumes no responsibility for errors that may...
-
Page 3: Table Of Contents
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners CONTENTS 1. INTRODUCTION 2. SAFETY REQUIREMENTS 3. SYSTEM DESCRIPTION Scanning Principles Adjustments Associated With Scanning System Diagram Camera boards Digital Board Display Board /Paper Sensor Ballast System /light Sensors Data Rates / Volumes (Doc 8) 4. - Page 4 Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners Light Level Adjustment Motor Speed Adjustment Calibration Downloading Firmware 7. MAINTENANCE 8. FAULT FINDING 9. WARM UP AND CALIBRATION SEQUENCES Warm up sequence Calibration sequence TOOL REQUIREMENTS RECOMMENDED SPARES SPARES LIST...
-
Page 5: Introduction
Service Manual – Colortrac Series 3 Colour Document Scanners 1. INTRODUCTION This manual contains the information required to service and repair a Colortrac Series 3 colour scanner. It does not cover specification, installation, operation or operators safety as these are covered in the installation and operating manual. -
Page 6: Safety Requirements
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 2. SAFETY REQUIREMENTS Electrical Safety warning. Do not remove any of the cover panels without disconnecting the power. It is important not to remove the two power supply boards until they have been left off for at least half an hour. -
Page 7: System Description
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 3. SYSTEM DESCRIPTION This section covers the basic principle behind the Colortrac scanners and the main electronic components that carry out this operation. 3.1 Scanning Principles The heart of the scanner is a Charged Coupled Device (CCD) which is an electronic component that converts light into voltage. -
Page 8: Adjustments Associated With Scanning
Service Manual – Colortrac Series 3 Colour Document Scanners 3.2 Adjustments Associated With Scanning The Colortrac scanner produces a high quality scan which requires compensation for a number of inherent problems. These adjustments are as follows: Left / Right Stitch... - Page 9 Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 3.2.2 Front / Back Stitch The front / back stitch is carried out in order to align the three camera along the line of scan. This is initially carried by aligning each camera to a string that is stretch across the top of the scanner. This adjustment is sufficiently accurate to ensure that the electronic adjustment can align the camera within a line.
- Page 10 Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners Lens Intensity Fall Off Intensity 100% Centre Xdisplacement Raw CCD Data Volts Pixels...
- Page 11 Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners The result is that for a constant intensity of light across the scan line the voltage out from the CCD is not constant. Un-normalised Video O/P Voltage Pixels The electronics on the camera board produces a gain compensation for each pixel to adjust for the effects of the lens and of the CCD.
-
Page 12: System Diagram
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 3.2.5 Colour Compensation The CCD is made up of three lines of cells, each line responding to a different colour. Each of the CCD lines focuses on a different scan line. Therefore it is necessary to delay the blue pixels by 16 lines, the green pixels by eight and the red pixels are not delayed. -
Page 13: Camera Boards
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners tubes in the scanner The light intensity of the tubes is controlled by the Light Sensor Board. and the Ballast board. The power feed for both the Ballast Board and the Digital Board PSU are fused by a thermal fuse which is part of the mains switch. -
Page 14: Digital Board
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners Gamma Correction (Doc 6) Intensity Gamma >1 Intensity In This transfer function is applied in the TRC ram by using the ram as a look up table. The data is then passed to the digital board down a ribbon cable. - Page 15 Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners Control Resolution Line Delay Line Ram FPGA Line Ram Green Delay Buffer SCSI Interface Line Ram Blue Delay Micro Palette Ram The FPGA (Field Programmable Gate Array) is a programmable logic device which carries out a number of different operation.
-
Page 16: Display Board /Paper Sensor
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners The microprocessor does not carry out any of the data processing. It carries out a series of tasks that control the data, such as loading the FPGA with its logic circuitry and setting up the various delay lines. -
Page 17: Assembly Description
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 4. ASSEMBLY DESCRIPTION Motor Ballast Supply Digital Board Rear View of The scanner Light Sensor Board Camera Board Display Main PSU Rear View of The scanner... -
Page 18: Replacing The Digital Board
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 4.1 Replacing the Digital Board When the digital board is replaced ensure that: 1. The security dongle is changed. 2. The motor speed is updated 3. The correct firmware is used. -
Page 19: Lubricate The Reduction Gear
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 4.6 Lubricate the reduction gear. 1. Open the lid 2. Remove the two screws that secure then end castings. Make sure that the end castings are supported before carrying this out. -
Page 20: Glass Height
(the extrusions that contain the rollers) with screws that have been machined to allow adjustment (Please contact Colortrac). The extrusions and therefore the glass can then be dropped in relationship to the rollers. The... -
Page 21: Passwords
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 5. PASSWORDS To enable the engineering menu use the “control J” key Engineering password = “trac” Download firmware password = “welch” Web page password for software = “trebor” The Web Page address is: www.colortrac.com/distributors... -
Page 22: Calibration Procedures
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 6. CALIBRATION PROCEDURES The following calibration procedures are required. 6.1 Focus Adjustment The Focus adjustment is carried out in two parts. A crude adjustment and a fine adjustment to compensate for colour fringing. For each of the cameras carry out the following procedure: 1. - Page 23 Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners Component Side Of Camera Board 3. Release the Lens locking ring and adjust the lens to achieve the maximum output on the scope. Lock the lens locking ring. (See the photos below)
-
Page 24: Magnification Adjustment
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners The Photo shows the system out of focus 6.2 4. Magnification Adjustment The magnification is set up using the QA1 target. 1.This target requires modification before it can be used (Normally modified before shipping). A piece of masking tape is place between the outer line of the target such that only the outer lines are visible. - Page 25 Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners The Trace Indicates the correct magnification 3. Select the “SCANNER RUN LENGTH “ option from the Engineering Menu. The program that is activated indicates the number of pixels between transition between black and white. The distance along the masking tape, between the two outer lines is 3391+/- 3 for the 380 series scanners (2544+/- 2 for the 360 Series Scanner).
-
Page 26: String Adjustment
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners Adjustment Of the Magnification 5. Once the magnification adjustment has been made the screw can be locked off and the focus re- adjusted. 6. Adjustment of focus and magnification are inter linked. - Page 27 Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners Alignment Holes Alignment Holes 4. Secure either end with tape. 5. Release the three securing screws on the top of the camera assembly (See the diagram below). The camera is then move in the horizontal plane by adjusting the two screws that push against the...
- Page 28 Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners Release the locking screws and adjusting the cameras Alignment Adjustment 6. The cameras are adjusted such that the string is seen along the length of the camera. In order to see this an oscilloscope is used to monitor a series of test points on the camera board.
- Page 29 Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners The diagram below indicates the waveform that is required. Black marks on the string Correctly String Aligned Off Alignment (Move both ends of the CCD towards the scan line)
-
Page 30: Stitch
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners The String Passes Over One Point On The CCD (Rotate The CCD) 7. Once the adjustment has been made, the locking screw require tightening. It may be necessary to adjust the camera as the locking nuts are being tightened. The adjustment requires to be carried out very accurately. - Page 31 Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners Camera 1/2 13.12” 17.5” (333mm) (44.5mm) Camera 2/3 26.24” (666mm) 3. Carry out a scan and zoom in to the centre of the scan to ensure that the horizontal lines are continuos.
-
Page 32: Light Level Adjustment
6.6 Motor Speed Adjustment The motor speed is determined during manufacture. This is set by selecting the “Engineer Menu:- Adjust Motor Speed” in the Colortrac Software. (The default is 7193) 6.7 Calibration The system does not need to be calibrate every scan. For best results it is recommended that a re- calibration is carried out every month. -
Page 33: Maintenance
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 7. MAINTENANCE A yearly maintenance program is required when the following action should be taken. 1. Replace both fluorescent tubes 2. Adjust the light level 3. Replace the glass 4. Replace the paper holdown... -
Page 34: Fault Finding
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 8. FAULT FINDING Power Up No lights appear on the Display 1. No power to the scanner 2. Incorrect firmware in the scanner 3. Terminator not fitted. Host BIOS fails to detect the scanner 1. -
Page 35: Warm Up And Calibration Sequences
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 9. WARM UP AND CALIBRATION SEQUENCES 9.1 Warm up sequence a) Check that the firmware is not corrupt. Returns S3BOOT b) Turn on all the display LEDS c) Check that the firmware is right CX/GX. Turn on Red LED if wrong. -
Page 36: Tool Requirements
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 10. TOOL REQUIREMENTS Metric Allen Keys Electrical Screwdriver Small adjustable spanner Cleaning Fluid Lint Free Wipes Oscilloscope Cotton Tape... -
Page 37: Recommended Spares
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 11. RECOMMENDED SPARES Starter Kit Part Number Description P000118 Assy Tested Digital Board P000112 Assy Tested Ballast Board P000243 Assy Camera Board - SET of 3 P000134 Assy Display Board... -
Page 38: Spares List
Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners 12. SPARES LIST Recommended Stock Part Number Description Base Base Field <10 <100 Consumable P000199 Paper Hold-down P000099 Auto Stitch Target P000141 Normalisation Target P000200 Assy Object Glass P000027 Light Tube... - Page 39 Colortrac Service Manual – Colortrac Series 3 Colour Document Scanners Sundries V2372-002 MT8 Target V2372-001 QA1 Target P000375 Starter Kit for < 10 units...
Need help?
Do you have a question about the 3 Series and is the answer not in the manual?
Questions and answers