Contex XD2490 Service Manual
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Contex XD2490 Service Manual

Contex xd2490
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Technical Service Guide
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FSM/TSG/002 (1.1)

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Summary of Contents for Contex XD2490

  • Page 1 Technical Service Guide for XD2490 FSM/TSG/002 (1.1)
  • Page 2 Revision table 1.0 -> Original Issue of Document October 9th 2009 1.1 -> New illustrations, Text December 1st 2009...
  • Page 3 Scanners covered by this Service Guide.: MG52D - XD2490 This document is the property of Contex A/S. The data contained herein, in whole or in part, may not be duplicated, used or disclosed outside the Recipient for any purpose other than to conduct technical evalu- ation.

  • Page 4: Table Of Contents

    Table of Contents Introduction to CIS Technology CIS Element Buildup �������������������������������������������������������������������������������������������������� 1-2 Design MG52D Block Diagram, Electronic ����������������������������������������������������������������������������������������� 2-2 Wiring Diagram, Electronic ��������������������������������������������������������������������������������������� 2-3 Power Supply layout and measuring points (SMPS) ������������������������������������������������� 2-4 Scanner Control Unit layout and measuring points (SUL) ���������������������������������������� 2-4 CIS Construction, Electronic �������������������������������������������������������������������������������������...
  • Page 5 Appendix B Firmware Download, walk through ................B-1 Appendix C Scanner Terms ����������������������������������������������������������������������������������������������������������������� C-1 Appendix D Error Codes ��������������������������������������������������������������������������������������������������������������������� D-1...

  • Page 7: Introduction To Cis Technology

    Introduction Introduction Introduction Introduction to CIS Technology CIS Element CIS Element buildup Focus Light Example of a CIS Element, Contact Image Sensor...
  • Page 8 Introduction Introduction Introduction CIS Element Buildup The CIS Element consist of 3 major part Sensor, Lens and Light source. The Light source is 3 LEDs in RGB that are lit one at the time. The sensor consists of 10368 individual Monochrome sensors. The purpose of the lens is to channel the light from the “pixels”...

  • Page 9: Design Mg52D

    Design MG52D Design MG52D Electronics Block Diagram Wire Diagram Circuit board layout’s CIS Construction...
  • Page 10 Design MG52D Block Diagram...

  • Page 11: Wiring Diagram, Electronic

    Design MG52D Wiring Diagram...

  • Page 12: Power Supply Layout And Measuring Points (Smps)

    Design MG52D Power Supply layout and measuring points (SMPS) Voltage on CN2 can be measured while connected or disconnected. pin 1 – 2 pin 3 – 4 24V +/-2V Scanner Control Unit layout and measuring points (SUL) SUL Board Markings From Factory When Replaced MG52D...

  • Page 13: Design Mg52D

    Design MG52D VCC Voltage at the Common Collector (positive [+] electrical connection) VTT Voltage Termination SUL Test Points Value Main 5 V ± 5% 5 V ± 5% 12 V ± 5% 2.5 V ± 5% 1.8 V ± 5% 3.3 V ±...

  • Page 14: Cis Construction, Electronic

    Design MG52D CIS Construction, Electronic CIS Unit. Warning: The CIS unit is factory mounted and designed to be disassembling further than replacing Scanner Control Unit, Paper/Lid sensors, Glass plate and USB cable. Ignoring this warning may cause failures that can not be corrected in the field.

  • Page 15: Troubleshooting

    Troubleshooting Troubleshooting Troubleshooting Sequence Image Quality problems Dust related errors Calibration related errors Curly or Folded originals Note! Before replacing any electrical parts such as SUx (Scanner Control Unit) or the CIS Unit, the parameter block should be erased and the scanner calibrated. This will solve the problem in most cases, especially if the reported problem is about image quality or identifying the calibration sheet.

  • Page 16: Troubleshooting Sequence

    Troubleshooting Troubleshooting Sequence This is a suggested Trouble- shooting Sequence and will work in most cases. There are always some gray zones, espe- cially if the problem is related to image quality. See Appendix C for Error Codes.

  • Page 17: Dust Problems

    Troubleshooting Dust problems There are image quality problems that are not related to HW errors, but are instead related to either in- sufficient cleaning, bad calibration or limitations of the CIS technology. Strikes that run in scan direction, witch that come and goes during the scan is like to be dust.

  • Page 18: Banding Problems

    Troubleshooting Banding problems Bad/no gray balance calibration (CIS module to module match). Image quality problems Scanning originals that have folds or is curled on a CIS scanner is often taken as a defect on the scanner, where it is actually a limitation of the used technology.

  • Page 19: Part Replacement Mg52D

    Part replacement MG52D Part Replacement MG52D Electronics CIS Unit Scanner Control Unit (SUL) Power Supply Stepper Motor Assy Paper Sensor Power Entry Module Mechanics Gas Spring for CIS Unit Identifying parts Complete list of parts Tools needed Torx 9 Straight Torx 10 Straight Torx...
  • Page 20 Part replacement MG52D Part replacement MG52D Identifying parts.
  • Page 21 Paper/Lid Sensor (1 pcs.) 4-07 5229A031R02 Pressure Rollers (3 pcs.) 4-09 6705D264R01 Gas Spring for CIS Bridge 4-11 5202D009R01 Cover Assy, Contex 4-10 Operators Panel (including Ribbon cable) 5202A003R01 LHS End Cover 4-13 Consumables 5229A005R01 Glass Plate 24” Service Tools 5299A101R01 24”...

  • Page 22: Scanner Control Unit (Sul)

    Part replacement MG52D Scanner Control Unit (SUL) *Switch Scanner off and disconnect from power source and PC prior to any repair. Tilt open CIS Unit by releasing handles. 1. Remove 7 screws in the Roller Cover. 2. Tilt CIS unit to open. 1.

  • Page 23: Operators Panel And Rhs Cover

    Part replacement MG52D Operators Panel and RHS cover *Switch Scanner off and disconnect from power source and PC prior to any repair. 1. Remove screws while holding the cover. Open CIS unit, see page 4-4 1. Disconnect ribbon cable on SUL board. 2.

  • Page 24: Cis Unit

    Part replacement MG52D CIS Unit *Switch Scanner off and disconnect from power source and PC prior to any repair. Remove SUL board, see page 4-4 1. Unplug Cables. 2. Remove screws. Pull USB and Keypad cable back in HW box, pull Power, Motor and Sensor cables out with the CIS unit.

  • Page 25: Stepper Motor Assy

    Part replacement MG52D 1. Lift up connector lock. 2. Pull out USB connector and cable. Replace USB cable and reverse steps. Stepper Motor Assy. *Switch Scanner off and disconnect from power source and PC prior to any repair. Remove RHS cover, see page 4-5 1.

  • Page 26: Belt Tension

    Part replacement MG52D Part replacement MG52D Belt Tension Remove RHS cover, see page 4-5 Tilt open CIS unit To insure correct belt tension. 1. Loosen screw (torx15). 2. Let spring apply correct tension. 3. Turn belt wheel 1/4 -1/2 turn. 4.

  • Page 27: Lhs End Cover

    Part replacement MG52D 1. Release locks. 2. Carefully tilt the sensor out. Replace the Tacho Sensor and reverse the steps LHS End Cover *Switch Scanner off and disconnect from power source and PC prior to any repair. 1. Remove Screws. 2.

  • Page 28: Gas Spring For Cis Unit

    Part replacement MG52D Gas Spring for CIS Unit *Switch Scanner off and disconnect from power source and PC prior to any repair. Remove LHS cover, see page 4-9 Click open CIS Unit so it stand in a vertical position. 1. Loosen screws. 2.

  • Page 29: Paper And Lid Sensors

    Part replacement MG52D Part replacement MG52D Paper and Lid Sensors *Switch Scanner off and disconnect from power source and PC prior to any repair. Click open CIS Unit so it stand in a vertical position. 1. Remove Screws to access Exit and Lid Sensor, remover roller cover.

  • Page 30: Pressure Rollers

    Part replacement MG52D Part replacement MG52D Pressure Rollers *Switch Scanner off and disconnect from power source and PC prior to any repair. 1. Remove screws and pull out Pressure Roller cover. 1. Pull out Pressure Roller. Replace Pressure Roller and reverse the steps.

  • Page 31: Scantest, Walk Though

    Appendix A SCANtest, walk though Description of each individual test in SCANtest Since this chapter is not scanner specific, some of the illustrations may apply completely to the scanner you are working on, like number of CIS element and transition areas.
  • Page 32 Appendix A Overview of tests in SCANtest Note! Before running any tests make sure the CIS Unit in closed position and that there is no documents loaded in the scanner unless specified in the test. Test 1. Scanner Information Here Firmware version can checked. Scanner sn.: must be typed in if the Scanner Control Unit has been re- placed!
  • Page 33 Appendix A Test 6. Motor Test Here the motor can be tested at vari- ous speed and directions. This Test can be useful if there is banding in scan width or complains about noise while scanning! Test 9. Camera Adjustment Provides you with a live image of what the CIS elements are looking at.
  • Page 34 Appendix A Test 12. Adjust Y-axis Scaling Here can the X and Y scaling be ad- justed. Scan a known size image measure in Nextimage, compare and adjust. The correction is done in % of the deviation.

  • Page 35: 600 Dpi And 1200 Dpi Scan Modes

    Appendix A Test 20. Noise Test This test is very useful if there are image quality issues such as streaks throughout the scan (scan direction). It can be determined if the streaks are: dust that are 1) present in the scanner (Dark streak that goes below the average line) 2) it has been present during Scanner Maintenance (White streak that goes...
  • Page 36 Appendix A...
  • Page 37 Appendix B Firmware Download, walk through The latest Firmware can be obtained from www.contex.com. Identify the scanner model and download. The computer that will be used for the firmware download needs to have WIDEsystem installed! Example of firmware file Execute the downloaded file.
  • Page 38 Appendix B Download of the Firmware has started. Download process can be followed in the window Firmware download has completed successfully. 5. Press Exit. After Firmware Upgrade / Downgrade the scanner firmware it is important to run Scanner Maintenance.
  • Page 39 Appendix - C --- Scanner Terms AdaptiveThresholding Bitmap: Advanced 2-D Adaptive Thresholding estimates the back- An image format made from a matrix of individual pixels. ground gray level in a window area around each pixel. The dif- .bmp. ference between the actual pixel value and the background is then compared to the adaptive settings to determine if a pixel Bitmapped Image: is thresholded as a black or a white pixel...
  • Page 40 Appendix - C --- Scanner Terms CALS number of color options. The number of potential color options Computer-aided Acquisition and Logistics Support (CALS) for a pixel is called color bit depth. For example a 4-bit pixel standard, a U.S. Defense Department and industry initiative would have 16 color options, and an 8-bit pixel would have that addresses the design, manufacture, and support issues of 256 color options, while a 24-bit pixel would have 16,777,216...
  • Page 41 Appendix - C --- Scanner Terms 2, and so on Digital Signal Processor, does image enhancement in real-time while scanning. Density The light stopping ability of a film. Density is inversely pro- Dual 2D-Adaptive Enhancement portional to the amount of light reflected or transmitted by an Enhancement processing on the foreground and background image.
  • Page 42 Appendix - C --- Scanner Terms Gamut Transformation ing the object. Color Management System function, where out-of-gamut colors are converted to colors within the gamut of the targeted device, e.g., a printer. A named color. In discussions of color that relate to photogra- phy, scanning, and printing, six hues are especially important: Gamut red, yellow, green, cyan, blue, and magenta.
  • Page 43 Appendix - C --- Scanner Terms Photographic Expert Group, JPEG images feature small file size and speed, but lower quality than other formats. Palette The set of colors available for an image. Lossless Compression File compression and subsequent de-compression without any PICT loss of data.
  • Page 44 Appendix - C --- Scanner Terms Screen Resolutions are normally 72 pixels per inch of screen. colors and work with a printer. Calibration gives better scan- Additional detail is thrown away by the screen display driver, ning results. The program should be run whenever changing anyway.
  • Page 45 Appendix - C --- Scanner Terms independent color definition. This is to provide good quality Tone and backward compatibility with minimum transmission and Any color or neutral that is denser than white. system overhead. Based on a calibrated colorimetric RGB color space well suited to Cathode Ray Tube (CRT) monitors, True color television, scanners, digital cameras, and printing systems,...
  • Page 46 Appendix - C --- Scanner Terms brightness (luminance) component Y (as described above), and two additional components X and Z. The spectral weighting curves of X and Z have been standardized by the CIE, based on statistics from experiments involving human observers. XYZ tri-stimulus values can describe any color.
  • Page 47 Appendix D --- Error codes Error Codes Software related errors System Error: 262-51 Description: Error closing file, corrupted image Corrective Action. Try the following: ■ Image size and resolution exceeds file format limitations. Reduce resolution or image size Hardware related errors System Error: 55-101 Description:...
  • Page 48 55-513 Description: The IT8 reference file could not be found on the internet. Corrective Action. Try the following: ■ Brows to it manually www.contex.com and retrieve the correct IT8 file or use standard System Error: 55-523 Description: Sheet not recognized.
  • Page 49 Appendix D --- Error codes System Error: 55-611 Description: Unknown Scanner Status Error Corrective Action. Try the following: ■ Reboot system. System Error: 55-613 Description: No paper was detected in the scanner. Corrective Action. Try the following: ■ Place the correct sheet in the scanner. System Error: 100-118 Description:...
  • Page 50 Appendix D --- Error codes System Error: 100-1003 Description: The scanner operation was interrupted by a user. System Error: 100-1004 Description: Media is currently being loaded by the scanner. Corrective Action. Try the following: ■ Please retry the operation when the media has been loaded. System Error: 100-1005 Description:...
  • Page 51 Appendix D --- Error codes System Error: 100-2017 Description: Firmware download is in progress System Error: 100-3000 Description: The firmware was not downloaded properly. Corrective Action. Try the following: ■ Please try to download the firmware again. System Error: 100-3001 Description: Unknown firmware error Corrective Action..
  • Page 52 Appendix D --- Error codes System Error: 100-3009 Description: Unable to adjust camera B down (CIS 3 or 4) Corrective Action. Try the following: ■ Please clean the white background / Pressure rollers and the glass plate. ■ Then calibrate the scanner. System Error: 100-3010 Description:...
  • Page 53 Appendix D --- Error codes System Error: 100-3062 Description: Fan error Corrective Action. Try the following: ■ Check Fans. ■ Check cables connections ■ Replace Power Supply or Interface board IMx System Error: 100-5002 Description: The scanner operation was interrupted by a user. System Error: 100-5003 Description:...
  • Page 54 Appendix D --- Error codes System Error: 100-4013x Description: Unable to calibrate a Camera / CIS element Corrective Action. Try the following: ■ Check the Switch Mode Power Supply ■ Check that all the cables are connected correctly to the Cameras Boards / CIS controller board.
  • Page 55 Appendix D --- Error codes System Error: 100-50091 Description: SUx, Parameter block erasure failed Corrective Action. Try the following: ■ Please download new firmware ■ Replace the Scanner Controller SUI System Error: 100-50092 Description: SUx, Parameter block write failed Corrective Action: Try the following: ■...
  • Page 56 Appendix D --- Error codes System Error: 100-50198 Description: Incorrect camera board. Corrective Action. Try the following: ■ Please check all camera board types.. ■ Update the firmware ■ Run SCANtest, test 9 See Appendix A ■ Replace the CIS Element ■...
  • Page 57 Appendix D --- Error codes System Error: 100-50259 Description: Firmware unable to identify SUI-board id. Corrective Action. Try the following: ■ Check Scanner Controller ID switch ■ Reload Firmware System Error: 100-50260 Description: Firmware unable to identify SUI-board variant. Corrective Action. Try the following: ■...

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