Service Manual - Martin Zimelka
Contents
1. LED7 Scanner ON Coit C Pang RPL APAL APIS ol TP97 _TP254 _TP2025 R200 S fol fel a U43 TP200 ma N TP201 TP255 DC TP99 TP98 TP203 Figure 8 1 Main board LED s Service Manual Flextight 848 Main Board Replacing the Main Board 8 2 Replacing the Main Board 1 10 Li 12 13 If possible save all your calibration settings as described in Saving Settings to a File on page 9 2 Obtain a replacement board from Imacon See Part 10 Spare Parts for ordering information On the backside of the scanne2. LEDS 24 V from external power supply 024 annn ABE rrr g4 E il Jel 028 a 45 X75 NI Fi E x70 3 S X37 F o wrrr o DD
3. 00000000 8 1 Replacing the Main Board 8 2 Part 9 Calibration General 0 000 ce eee es 9 1 Saving Loading Calibration Settings 9 2 Saving settings to a File 9 2 Loading Settings from a File 9 2 Loading Factory SettingS 9 3 Focus Calibration 0000000 0 eee 9 4 White Calibration for Reflectives 9 5 CCD Calibration 0 0000 nee eee 9 7 Drum Position Calibration 9 8 Advanced Focus and Position Calibration 9 9 Opening the Motor Positions Window 9 9 Part 10 Spare Parts Spare parts for Flextight 848 10 1 0 4 Table Of Contents Service Manual Flextight 848 Introduction About this Manual 1 1 Part 1 Introduction About this Manual This manual describes how to perform basic maintenance on the Imacon Flextight 848 scanner It is intended for use by trained technicians only It must not be given to customers or end users The procedures described here require a reasonable level of technical skill and access to the proper tools Overview Diagrams Back Panel amp Connectors Figure 1 1 Back panel features of Flextight 848 A Power Cable Socket plug the power cable into this socket B SCSI Port plug a SCSI cable here and connect it to the previous SCSI device in your SCSI chain or to your computer if no other devices are connected NOTE The scanner must always be connected as the last device in a SC
4. Mount the left side cover as described in The Side Covers on page 3 3 Service Manual Flextight 848 Main Board Saving Current Settings 8 1 Part 8 Main Board Saving Current Settings The main board holds two flash PROM chips which contain the basic instructions used to start up the scanner and enable communication with a computer Also all calibration information is stored on the flash PROMs If for some reason you have to replace the main board all calibration settings will be lost and you will have to recalibrate the scanner Therefor we strongly recommend that when having properly calibrated the scanner you save the calibration settings to a file on your harddisk or on a diskette Having done this you will be able to load the settings at any time if necessary See Part 9 Calibration for details about saving and loading calibration files Main Board LED s On the main board there are two LED s supplying useful information for trouble shooting purposes e LED7 indicates if scanner is ON e LED8 indicates if 24V power is supplied to the main board from the external power supply Figure 8 1 below shows the locations of the LED s on the main board
5. Service Manual Flextight 848 Problem Diagnosis Focus Problems 2 3 Finally there could be a problem with the drum motor itself especially if you do not hear any sound at all when the scanner should be loading the original See Replacing the Drum Motor on page 6 3 for instructions Noise When Refocusing If the scanner is making squeaking sounds when refocusing then you probably need to lubricate the positioning screws See Lubricating the Spindles on page 5 4 for instructions Focus Problems Normally focus problems will be solved by making a new focus calibration Instructions and materials for doing this are included with the user documentation However in some extreme cases this will not be enough See Part 9 Calibration for more information about how to deal with focus and other calibration problems Service Manual Flextight 848 9 4 Problem Diagnosis Service Manual Flextight 848 Covers and Panels General Part 3 Covers and Panels General Most of the maintenance procedures described in this manual require you to remove at least one of the scanner covers or panels The sections in this chapter describe how to dismount all of the main covers and panels from the scanner You will not usually need to remove all of the parts so do not begin by executing all of the procedures in this chapter Instead start with the section of this manual that describes the procedure you want to perfor
6. 3 From the Maintenance menu choose Motor Positions This will open the Motor Positions window Motor Positions Current Flash Flash Factory Calibration a Calibration Calibration CCO i CCO Optic CCO Optic Drum Drum 315706 980228 Drum 315706 380228 461955 629340 461955 829340 321200 330000 321300 230000 69153 221088 69153 221088 Flatbed Flatbed Center 4000 Center 4000 Center 4000 Start position Start position Start position Drum 15000 Drum 15000 Drum 15000 Flatbed 7000 Flatbed 7000 Flatbed 7000 Scanner S W Fx2000 F48000 Fs000 mesa i cep s n 3 wr Use factory Usefile UseccDfile Default Revised zoombox Registration OK C Calibration rail A OptiRes Write factory Write file Cancel The scanner utilizes floating resolutions which enables it to scan in optical true resolutions in the range 960 8000 dpi The references for calculating the proper positions for the CCD and the lens in the entire range are 4 calibrated fix positions These 4 calibrated positions can be found in the Motor Positions window The 4 calibrated resolutions are not specific and they might vary slightly from scanner to scanner FlexColor will try to find the motor positions for the following 4 resolutions e 5760 dpi e 2800 dpi e 1440 dpi e 960 dpi The resolutions ac
7. 12 13 Replace the inner drive belt with one of the replacement belts both belts are identical When you do this first loop the belt over the small motor drive gear then insert the large gear into the loop and hold it in place it will not stay there by itself until you replace the securing plate Make sure that you do not allow other protruding parts to get inside the belt loop Replace the securing plate and tighten the three screws Take the other replacement drive belt and install it in the front position as shown in Figure 6 5 Inspect all of the tension springs If any are broken or fatigued then replace them with new ones Replace the three tension springs in their original positions see Figure 6 5 IMPORTANT Make sure that the drum tension spring is stretched around the stud Mount the right side cover as described in The Side Covers on page 3 3 Service Manual Flextight 848 The Light Table General 1 1 Part The Light Table General The light table contains a board supplying the light for aligning your originals to the light table grid If the light is not lit when you turn on the scanner then you may need to replace the board Also the light table is equipped with a special damper device to ensure a smooth operation when closing and especially when opening the light table The damper device can be either adjusted or replaced whatever is necessary Replacement and adjusting procedures are desc
8. B and C as described in The Side Covers on page 3 3 Turn the light table D to upright position Locate the tube to be replaced and dismount the plug E Remove the defective tube e Press the flaps backwards to release the tube e Pull the tube gently out of the holders and then sideways out of the scanner Insert the replacement tube and mount it into the holders making sure that it is properly held in place by the flaps Connect the plug E IMPORTANT The T on the lamp board cover F indicates the socket for the transparencies tube Lower the light table D Replace the two side covers B and C as described in The Side Covers on page 3 3 Replace the front panel A as described in The Front Panel on page 3 1 Turn on the scanner and check function of the new light tube s Service Manual Flextight 848 4 3 4 4 Light Tubes Replacing a Lamp Driver Board Replacing a Lamp Driver Board 1 Get the appropriate replacement lamp driver board The boards are identical for both the reflectives and the transparencies light tubes See Part 10 Spare Parts for ordering information Turn off and unplug the scanner from the primary power supply Remove the front panel and the left side cover as described in The Front Panel on page 3 1 and The Side Covers on page 3 3 Lamp board cover Screws Weni Pae Si a L gt F te 4 Sad ie M f Pe ede me Ut EL ee he Reflectives L
9. Light Tubes for more information about how to remove the tubes Service Manual Flextight 848 Sensor and Optics 5 4 Lubricating the Spindles Lubricating the Spindles For each original format the lens and CCD carriages are repositioned to make best use of the CCD resolution Each carriage moves along a central rail and is positioned independently by a separate drive screw spindle After some time it may become necessary to lubricate the spindles This problem is indicated by a squeaking or rattling sound when the carriages are being repositioned Lubricating the spindles 1 Obtain a tube of spindle grease from Imacon see Part 10 Spare Parts for order numbers 2 Remove the front panel and inside cover as described in The Front Panel on page 3 1 and The Inside Cover on page 3 2 Central Rail CCD carriage spindle Lens carriage spindle Figure 5 3 The drive spindles and central rail 3 Use a clean cloth to wipe away as much of the existing grease as possible from both spindles Be careful not to get any grease on the optics or CCD 4 Use a brush to apply a very thin layer of grease equally along the full length of each spindle Make sure to get the grease well into the threading of the spindles IMPORTANT Do not apply the grease in thick layers as the high rotating velocity of the spindles will spread the grease all over the inside of the scanner 5 Reassemble the scanner and connect it to a computer th
10. a atl ki al Ana i ee iimas a Y m 4398 i 4787 i z789 i 2046 rame 60x60 E orm eo vw E Ga Take 1 i Overview Lil Display focus Last auto Figure 5 1 The Monitor window The Monitor window Fig 5 1 shows the light levels read by each of the color sensors Adjust the value of the Light field until all three lines are low enough so that none of them clips becomes flat at the top All three lines should be more or less smooth and even as shown in Fig 5 1 If light is not reaching some points on the CCD you will see a dip or drop off If you notice two three or more pixels dipping as shown in Fig 5 1 it indicates the presence of dust or scratches on the lens or CCD See Cleaning the Sensor and Optics on page 5 2 for instructions about how to fix this If you discover that the CCD is scratched then replace it as described in Replacing the CCD Sensor and or Board on page 5 5 The menu Frame allows you to choose from all of the available frames if required The menu Take allows you to drive the CCD in different resolution modes Take 1 is the max resolution mode Take 4 is the low resolution mode used for preview Service Manual Flextight 848 5 2 Sensor and Optics Cleaning the Sensor and Optics Cleaning the Sensor and Optics 1 Connect the scanner to a computer that is capable of operating the scanner i e has a FireWire or SCSI connector and FlexColor installed Make a preview with t
11. handle If you suspect your scans are not as sharp as they should be then you may need to calibrate your scanner Note that you must not calibrate the scanner every day It is intended that the scanner is calibrated not more than once every three months In most cases this procedure will never be necessary The focus calibration is stored in the scanner s flash PROMs on the main board which means that you must make a new focus calibration if you replace the main board Use the procedure below to make Focus Calibration L Di 6 Connect the scanner to a computer that has FlexColor installed Turn on both the computer and the scanner and start FlexColor Locate a Focus sheet like the one that comes with the scanner It is a 8 x 9 cm 3 x 3 5 square of transparent film with a black image on it TTT A Tt a A it Lee pes imacon Load the sheet into the 6 x 6 original holder with the lines pointing towards the scanner vertically Place the sheet as straight as possible Use the scanners light table grid and the corners marked on the sheet to help align it Select Focus Calibration from the Maintenance menu Kdount transmission focus sheet Calibrate Click on the Calibrate button and the focus calibration starts When the focus calibration is finalized the focus calibration window closes again Your scanner is now calibrated for all resolutions and for both transparent and reflective originals Servi
12. of the CCD carriage Carefully remove the CCD cover plate thereby exposing the CCD sensor Disconnect the two plugs from the CCD board Do this by grabbing the plugs and pulling up do not pull on the cables themselves Remove the CCD board cover plate the one with all the small holes from underneath the carriage by removing the 4 allen screws 2 5 mm Use a 5 5 mm wrench to remove the 4 studs that hold the CCD board to the bottom of the CCD carriage Service Manual Flextight 848 5 5 Sensor and Optics 5 6 Replacing the CCD Sensor Board 11 Carefully remove the CCD board Make sure that you also remove the small heat transmission plate located between the CCD board and the CCD carriage bottom 12 Remove the small CCD cooling element from behind the CCD sensor Heat transmission plate CCD cooling element CCD board Figure 5 5 CCD board with heat transmission plate and cooling element 13 Use a lint free cloth to clean off all cooling pasta residues from all surfaces on the heat transmission plate cooling element and CCD sensor if reusing the existing one Also clean the area underneath the CCD carriage where the heat transmission plate will be applied Installing the new CCD board 14 IMPORTANT When handling the CCD sensor board never lay it on a dirty hard or rough surface 15 Apply a thin even layer of cooling pasta on the surfaces indicated in Figure 5 6 Use ie a small piece of cardboard to d
13. original When calibrated When the Use calibration box below is checked the calibration data is used to optimize the final scan if Use calibration Use factory Calibrate Read the information provided in the CCD calibration window then click on Calibrate The scanner will scan the image When it is done mark the Use calibration checkbox then click on Done Note that if the scanner was calibrated at the factory then a warning will appear if you try to make a new CCD calibration It is possible to dismiss the warning and continue but we do not recommend that you recalibrate Service Manual Flextight 848 9 7 Calibration Drum Position Calibration 9 8 Drum Position Calibration If the preview is in the wrong vertical position it might be necessary to calibrate the drum position Also if the preview has a vertical wide black stripe throughout the image or if the preview image is missing entirely the problem might be solved by a drum calibration Use the procedure below to calibrate the drum position L Connect the scanner to a computer that has FlexColor installed Switch on both the computer and scanner and start FlexColor In FlexColor type debg From the Maintenance menu choose Position This will open the Service Positions window Service Positions Drum calibration Holder r210 f Slide home Feeder home Black calibr Co White calibr Verify that the Ho
14. 0800 eee 2 2 Lost Originals x aa 2 te hae Ba b4 we oes 2 2 If the Drum Motor Does Not Turn Off 2 2 If the Originals Are Not Loading Correctly 2 2 Noise When Refocusing 2 3 Focus Problems 20220050550e 2 3 Part 3 Covers and Panels General is aia as aaa eee ae ae ae a ee wo 3 1 The Front Panel 0000 eee nnae 3 1 The Inside Cover 002 00080 eee 3 2 The Side Covers 022002 00 eeeaee 3 3 The Bottom Panel 2000 00000 3 4 Part 4 Light Tubes General s ba sek ere ee ee ee ee 4 1 Replacing the Light Tubes 4 3 Replacing a Lamp Driver Board 4 4 Part 5 Sensor and Optics Testing the Sensor and Optics 5 1 Cleaning the Sensor and Optics 5 2 Lubricating the Spindles 5 4 Replacing the CCD Sensor Board 5 5 Replacing the Optics 0 00 5 5 5 8 Service Manual Flextight 848 Part 6 The Drive System General cs 42566 t wad eee ee ee ee 6 1 Replacing the Original Loader 6 1 Replacing the Drum Motor 6 3 Replacing the Drum Position Sensor 6 4 Replacing the Drive Belts 6 5 Part 7 The Light Table Generalis so eu i ee ee ee we ee 1 1 Replacing the Light Board 1 1 Adjusting the Light Table Damper T 3 Replacing the Light Table Damper 1 4 Part 8 Main Board Saving Current SettingS 0 055 8 1 Main Board LED s
15. 48
16. SCSI address selector switch 15 Replace the ribbon cable holder 16 Turn the rear panel into its original position then lift it slightly upwards until the slots in the panel sides catches the screws Now lower the panel making sure that it slides inside the two screws at the bottom and finally tighten these two screws Service Manual Flextight 848 8 4 Main Board Service Manual Flextight 848 Calibration General Part 9 Calibration General The scanner may require the following types of calibration Focus calibration adjusts the positioning of the scanners optics for each zoom level If your scans are coming out unfocused or at slightly the wrong size then you may need to make a new focus calibration to adjust the zoom mechanism See Focus Calibration on page 9 4 for details White calibration is only required for reflective scans it is done automatically for transparencies During calibration the scanner scans a white target to establish the white point along the full length of the scanners CCD See White Calibration for Reflectives on page 9 5 for details CCD calibration ensures that all of the pixels in the CCD react equally to low level light CCD calibration is done at the factory for all new scanners See CCD Calibration on page 9 7 for details Drum position calibration ensures that the preview is in the right vertical position Also if the preview image has a vertical wide black stripe throughout th
17. SI chain as the scanner s SCSI interface has an internal active terminator C SCSI Address Selector assign an address number using the and buttons Use only 1 2 3 4 5 or 6 Do not use 0 7 8 or 9 D FireWire Interface Sockets plug a FireWire cable max 6 m here and connect it to your computer You can use the second plug to connect another device hard disk printer etc to the FireWire chain Service Manual Flextight 848 Introduction 1 2 overview Diagrams Front Panel Figure 1 2 Front panel features of Flextight 848 A Feed Table must be in lower position for normal scanning When scanner is not in use you can turn it to upright position flushing with the scanner front to protect it from dust etc Adjust to horizontal position when using the 35 mm slide mount holder Light Table for viewing originals The grid helps you to align your transparent originals Transparency Holder Guide all transparency holders fit between two rails to keep them straight D Original Holder Clasp all original holders slide into a slot here and are held in place by a magnetic clasp Power Switch press here to switch the unit on off Power Indicator Green Remains lit when ready to scan Flashes when first installed to indicate that firmware must be loaded it will be loaded automatically when you run FlexColor G Motor Drive Indicator Yellow lights when the scanner is repositioning the optics to scan in a new format
18. amp Driver Board Transparencies Lamp Driver Board Figure 4 2 The Lamp Boards Dismount the lamp board cover by removing the two allen screws 2 5 mm Disconnect the plugs from the lamp board you are replacing and remove the board by removing the 2 screws holding it Mount the new board using the screws and connect the plugs IMPORTANT The T on the lamp board cover indicates the socket for the transparencies tube Replace all covers and panels using the reverse procedures as when they were removed Service Manual Flextight 848 Sensor and Optics Testing the Sensor and Optics 5 4 Part 5 Sensor and Optics Testing the Sensor and Optics FlexColor includes a hidden diagnostics feature for testing the response of the CCD Use this feature to make sure light is reaching the CCD across its full length and to look for signs of dust on the lens CCD or light source 1 Connect the scanner to a computer that has FlexColor installed Turn on both the computer and the scanner and start FlexColor 2 Remove the original holder from the scanner if there is one and make a preview scan 3 Type debg on the keyboard 4 From the Maintenance menu choose Monitor Monitor i a AERA aN m aa ei yhnauin0 puppa Ra see ty te a E his an nahi R PA A T apa R ER can aa mAh rie perenne iain ga a a a tg Aaina Manni neat n Aarten af Mani ay k tei ma hp j 1 Pa saan Aan A nat hase pate I Mgt Naa etd Peete an my tanta eet natn
19. anual Flextight 848 The Light Table Adjusting the Light Table Damper Adjusting the Light Table Damper When opening the light table from its upright position it should lower smoothly into its lowest position If the damper is adjusted too tight it results in a too slow movement and the light table will not reach its lowest position unless pushed down manually whereas a too loose adjustment will result in the light table coming down too quick Adjusting the damper L Remove the left side cover on your left when you are looking at the front of the scanner as described in The Side Covers on page 3 3 2 Turn the light table to upright position Cover plate 13 mm wrench MY Damper 5 mm allen key gt Loosen 4 Tighten X Figure 7 4 Adjusting the light table damper Open the cover plate below the light table Insert a5 mm allen key in the damper screw and hold it in position while slightly loosening the nut on the inside using a 13 mm wrench Now make the required adjustment e To tighten the damper turn the allen key clockwise when looking at the scanner s left side e To loosen the damper turn the allen key counterclockwise when looking at the scanner s left side Hold the allen key in place while tightening the nut Remove the tools and lower the cover plate Check light table movement If necessary readjust until a satisfactory movement has been obtained NOTE If a satisfactory movemen
20. at is capable of operating the scanner i e has a FireWire or SCSI connector and FlexColor installed 6 Makea few previews to move the two carriages inside the scanner and spread out the grease you do not need to mount an original or original holder For example e Make an A4 preview e Turn the scanner off and on again the carriages will move to top position e Make a 35 mm preview e Turn the scanner off and on Service Manual Flextight 848 Sensor and Optics Replacing the CCD Sensor Board Replacing the CCD Sensor Board 1 10 Obtain a replacement CCD sensor board assembly from Imacon see Part 10 Spare Parts for order numbers Connect the scanner to a computer that is capable of operating the scanner i e has a FireWire or SCSI connector and FlexColor installed Make a preview with the software set to scan a 24x36 frame you do not need to mount an original or original holder This will put especially the CCD carriage in a position where the CCD board is easy accessible Turn off the scanner Remove the front panel and inside cover as described in The Front Panel on page 3 1 and The Inside Cover on page 3 2 Bracket plate CCD cover plate Finger screws CCD board plugs Figure 5 4 Replacing the CCD sensor board Remove the bracket plate in front of the CCD carriage by removing the 4 allen screws 3 0 mm holding it Remove the two finger screws that hold the CCD cover plate to the bottom
21. bes or lamp driver boards may be defective Make a preview using both types of scans transparent and reflective to find out which tube is affected e If transparencies are not working then the bottom tube may be burned out or its lamp driver board may be defective e If reflectives are not working then the top tube may be burned out or its lamp driver board may be defective Replacing a defective light tube or lamp driver board is described on the following pages IMPORTANT After changing the light tube for the reflectives you should make a new white calibration or you should remember to inform the customer that he must make the calibration when receiving the repaired scanner See White Calibration for Reflectives on page 9 5 for more information Service Manual Flextight 848 Light Tubes Replacing the Light Tubes Figure 4 1 Replacing the Light Tubes PRESS PULL OUT PULL OUT Service Manual Flextight 848 Light Tubes Replacing the Light Tubes Replacing the Light Tubes See Figure 4 1 opposite i 2 10 11 12 13 14 Get the appropriate replacement lamp See Part 10 Spare Parts for ordering information Turn off and unplug the scanner from the primary power supply IMPORTANT Let the light tubes cool down for app 10 minutes before proceeding Remove the front panel A as described in The Front Panel on page 3 1 Remove the two side covers
22. calibrate the scanner as described in Focus Calibration on page 9 4 and test the focus at each resolution by making test scans If you are still having trouble you may need to adjust the CCD and or optics position settings Contact Imacon for advice about how best to do this Motor Positions Current Calibration Flash Calibration Flash Factory Calibration cc Optic Drum 2157 s60228 46195 32130 691 Flatbed Center 4000 Start position DPI 55124 2e7o2 14631 97535 Drum 15000 Flatbed 7000 Scanner S N FYsooo MBs N CCD S N Calibration rail C Revised zoombox al Registration OK v OptiRes CCO 315706 461955 321300 69154 Drum Flatbed Center 4000 Start position 15000 7o00 Drum Flatbed Optic 9802278 829340 530000 221088 CCO 315706 461955 321300 69153 Drum Flatbed Center 4000 Start position 13000 T000 Drum Flatbed Optic 390228 829340 330000 221088 Fesood Fasood lI Default Use factory Use CCDfile Write factory Write file Figure 9 1 The Motor Positions window Service Manual Flextight 848 9 3 Calibration Focus Calibration 9 4 Focus Calibration The scanner uses an adjustable zoom and focus mechanism to optimize its scanning resolution for each of the original formats it can
23. canner position the optics but it stops making sound and does not load the original then you may need to replace the drive motor Use the procedure below 1 Obtain anew drum motor from Imacon see Part 10 Spare Parts for order numbers 2 Switch off and unplug the scanner 3 Remove the bottom panel as described in The Bottom Panel on page 3 4 and the right side cover as described on page 3 3 Inner belt tension spring es Stud Drum tension spring Drum motor Figure 6 3 Drum motor and tension springs 4 Remove the inner belt tension spring to release the drive belt from the drum motor drive wheel If necessary remove the drum tension spring as well 5 Remove the plug from the drum motor and remove the two allen screws 2 5 mm holding the motor 6 Mount the new motor and connect the plug 7 Mount the drive belt on the drive gear 8 Place the tension springs in their original positions If you have removed the drum tension spring make sure that it is stretched around the stud 9 Mount the panels and covers in the reverse order as when they were removed Service Manual Flextight 848 6 3 The Drive System 6 4 Replacing the Drum Position Sensor Replacing the Drum Position Sensor After making a scan the drum rotates to the feed position and stops there The drum position sensor detects when the drum has reached this position and turns off the motor If the sensor is defective the drum will no
24. ce Manual Flextight 848 Calibration White Calibration for Reflectives 9 5 White Calibration for Reflectives The scanner uses a white reference to make sure that all elements in the scanner s CCD react consistently to light brightnesses The first time you make a reflective scan a window will appear reminding you to make a white calibration scan Thereafter the calibration will be stored in the scanners flash PROM so it is preserved when you move the scanner to a new computer Use the procedure below to make White Calibration 1 Geta white calibration sheet like the one that comes with the scanner It is a square white piece of paper 219 x 219 mm 8 6 x 8 6 If you do not have an original Imacon white calibration sheet then you can use a flat non textured perfectly white piece of paper of the same dimensions 2 Get anew clear plastic cover sheet for the reflective original holder and mount the original holder on the scanner 3 Align the top edge of the sheet with the dotted line near the top of the original holder see Figure 9 2 below Align each side of the target with the edges of the original holder Align the top edge of the calibration card with the dotted line printed near the top of the original holder Align the side edges of the calibration card with the side edges of the original holder Figure 9 2 Positioning the white calibration sheet on the reflective holder Service Manual Flextigh
25. e image or if the preview image is entirely missing these problems might be solved by calibrating the drum position See Drum Position Calibration on page 9 8 for details All of the calibration procedures are simple and are initiated from the FlexColor program If the normal Focus Calibration procedures does not fully fix a focusing problem it is possible for technicians to access an advanced set of focus calibration parameters This may become necessary if the focus has become too inaccurate for the standard procedure to work The advanced procedure is described in Advanced Focus and Position Calibration on page 9 9 Service Manual Flextight 848 9 1 Calibration 9 2 Saving Loading Calibration Settings Saving Loading Calibration Settings Saving settings to a File The values for the various calibration procedures are stored in the flash PROMs on the scanner s main board and thereby preserved when you move your scanner to another computer On the other hand this also means that all settings will be lost if the main board is replaced For this reason we strongly recommend that you save all your calibration settings to a file on your harddisk or a diskette once the scanner has been properly calibrated enabling you to load the settings at any time IMPORTANT Only the values for focus and drum position calibration can be saved to a file meaning that you will have to perform white calibration and in some cases also CCD cal
26. e when you scan 35 mm negatives The CCD calibration information is stored in a flash PROM on the main board inside the scanner not on the hard disk This means that the CCD calibration is preserved when you move the scanner to a new computer However if you change the main board then you must make a new CCD calibration Use the procedure below to calibrate your CCD sensor using FlexColor 1 Connect the scanner to a computer that has FlexColor installed Switch on both the computer and scanner and start FlexColor In FlexColor type debg Find or make a color negative original showing a clear blue sky or something similar The original must not have too many sharp contours in it Mount the original in the 36 x 24 landscape original holder and set the original format in the Frame pop up menu as usual Choose CCD calibration from the Maintenance menu The CCD calibration window appears CCD calibration This calibration will detect small irregularities in sensor pixels especially during low lightlevels After calibration these data will be used to optimize the scan quality The procedure is as follows 1 Mount an original in a 36x24 landscape original holder A special filter for this use can be obtained from your dealer You can also get good results by using a color negative of a uniform surface like a bright blue sky 2 Press Calibrate to start the calibration procedure The process involves 2 full scans of the
27. ervice Manual Flextight 848 2002 Imacon A S All rights reserved Imacon Flextight 848 Service Manual revision 1 0 The information in this manual is furnished for informational use only is subject to change without notice and should not be construed as a commitment by Imacon A S Imacon A S assumes no responsibility or liability for any errors or inaccuracies that may appear in this manual Imacon A S assumes no responsibility or liability for loss or damage incurred during or as a result of using Imacon software or products Imacon FlexColor and Flextight are trademarks of Imacon A S Adobe and Adobe Photoshop are trademarks of Adobe Systems Inc Macintosh Mac OS and ColorSync are registered trademarks of Apple Computer Inc Printed in Denmark Service Manual Flextight 848 Table Of Contents Table Of Contents Part 1 Introduction About this Manual 0000000 1 1 Overview Diagrams 225800008 5 1 1 Back Panel amp Connectors 1 1 Front Panel 000 0c eee enna 1 2 Cu t Aw ay VIEW 6 accise amp oan ee oe be 1 3 Part 2 Problem Diagnosis Striping in Images 00000808 2 1 Striping in Reflectives Only 2 1 Striping in Dark Areas Only or Light Areas for Negatives 0 0 eee ee ee 2 1 General Striping Problems 2 1 Bands or Scattered Pixels 2 1 NO IMA e oie bee eds bee ROS be wee ws 2 2 Drive Problems 000000
28. g see Loading Settings from a File on page 9 2 The Motor Positions window shows the position settings for the CCD carriage and Optics carriage for each of several resolutions and formats plus the Drum position at which the scan starts for each format Service Manual Flextight 848 Spare Parts Spare parts for Flextight 848 10 1 Part 10 Spare Parts Spare parts for Flextight 848 Below is a list of available spare parts service kits and replacement accessories for Flextight 848 Contact Imacon for the latest pricing information Item Description Item Number Light Tube Ushio 10700022 Lamp Driver Board Ushio 10700023 Light Board 50100029 Main Board 50100026 CCD Board Assembly 50200271 CCD Cooling Unit 30900004 Tube of Cooling Compound Gear Belt 10600007 Gear Module 50200307 Power Unit 40250014 Drum Motor 10400018 Drum Position Sensor 30900003 Flexible Loader Serial Nos FX010110xx FX02051xxx 40100962 40100906 Light Table Damper Assembly 50200328 Rubber Roller Assembly 50200311 Spindle Grease 10800025 Lens 10700002 Back Ring w Infrared Filter 10700009 Misc Screws amp Springs Kit 50900002 White Calibration Sheet 219 x 219 mm 40900002 Focus Calibration Sheet Service Manual Flextight 848 40900026 10 2 Spare Parts Service Manual Flextight 8
29. he software set to scan a 60x60 frame you do not need to mount an original or original holder This will put the CCD and lens carriages in the positions shown in Figure 5 2 which makes the CCD and lens easily accessible Turn off the scanner Remove the front panel and inside cover as described in The Front Panel on page 3 1 and The Inside Cover on page 3 2 CCD carriage behind bracket r CCD cover plate Lens carriage Finger screws Exposed CCD Figure 5 2 The CCD and Lens carriages Remove the two finger screws that hold the CCD cover plate to the bottom of the CCD carriage Carefully remove the CCD cover plate thereby exposing the CCD sensor Use a clean anti static brush to brush dust away from the CCD sensor and from the top and bottom surfaces of the lens on the lens carriage Clean the CCD sensor and both lens surfaces with a dust free tissue If the CCD sensor and or lens surfaces are still dirty for example with fingerprints then use a small amount of Lens cleaner or isopropyl alcohol and a dust free tissue to clean them further Carefully replace the CCD cover plate using the finger screws again being careful not to scratch the CCD itself 10 Reassemble the scanner Service Manual Flextight 848 Sensor and Optics Cleaning the Sensor and Optics 5 3 11 To be extra sure the scanner is as clean as possible remove the light tubes and wipe them with a clean dust free tissue See Part 4
30. ibration again when having replaced the main board Save your settings to a file following the procedure below 1 Follow the procedure in Opening the Motor Positions Window on page 9 9 2 Inthe Motor Positions window see Figure 9 1 click on the Write file button then name your file and select where you want to save it and finally click on Save You can load your settings any time see Loading Settings from a File below for details Loading Settings from a File It is possible to load the values of the focus and drum position calibrations from a file There can be several reasons why you might want to do this e You have been experimenting with the settings and need to restore the original values e macon has provided you with a diskette to help you with a specific focus problem e You have replaced the main board on a scanner so the factory settings which were stored on the old main board are no longer available In this case you can use the calibration diskette that came with the scanner if you have it If you do not have the diskette you may be able to get a new copy from Imacon because we keep a database of the factory calibration for every scanner by serial number In either case you will have a file on your harddisk or on a diskette with values that you must load into the scanner Use the following procedure to do so 1 Follow the procedure in Opening the Motor Positions Window on page 9 9 2 Inthe Motor Positi
31. isperse the pasta evenly on the surfaces WARNING Make sure that you apply a very thin layer only as the pasta has to ensure proper contact of the surfaces if the layer is too thick it will have an insulating effect instead Apply cooling pasta Figure 5 6 Applying cooling pasta Service Manual Flextight 848 16 17 18 19 20 21 Sensor and Optics Replacing the CCD Sensor Board Insert the cooling element and push it back and forth a couple of times to make proper contact with the CCD sensor IMPORTANT Make sure that the cooling element is inserted with the Supercool side down facing the back of the CCD sensor and with the plug facing the connector on the CCD board Do not connect it yet Replace the heat transmission plate and make sure of proper contact with the cooling element Make sure that the CCD window is clean and free of fingerprints and dust If necessary use a piece of lens paper to clean it Replace the board in the CCD carriage using the reverse procedure that you used to remove it Always be careful that the CCD does not get scratched while you work NOTE The plug for the cooling element must go through the small rectangular hole in the CCD carriage bottom Connect both plugs to the CCD board see Figure 5 4 NOTE The big plug from the ribbon cable can be a little tricky as it has to go past the special EMC contact spring Mount all covers brackets and panels in the reverse o
32. lder parameter has a negative value normally in the range 5 000 through 25 000 Make sure that no original holder is mounted on the scanner then click the Find button The scanner will now search for the home position This takes about 4 minute When the scanner has found the home position of the drum it is saved in the scanner and no further action is necessary Make a new preview with a holder mounted to verify that the image is in the right position Service Manual Flextight 848 Calibration Advanced Focus and Position Calibration Advanced Focus and Position Calibration When the scanner executes its self calibration procedure for focus it tests a range of focus settings to find the sharpest position However if the focus has drifted too far away from its correct setting the automatic procedure will fail to find the correct position This will require you either to return to the factory settings or to enter a new position value from which the scanner can initiate the self calibration procedure to find the optimal setting The advanced focus and position settings are available through the FlexColor software but are hidden from the user Opening the Motor Positions Window below explains how to access and use these settings Opening the Motor Positions Window 1 Connect the scanner to a computer that has FlexColor installed Switch on both the computer and scanner and start FlexColor 2 In FlexColor type debg
33. ll height of the image Unfortunately there are many sources of this problem making it one of the most challenging things to fix Striping in Reflectives Only If the striping problem is only affecting reflective scans then the problem is probably an invalid white calibration Try making a new white calibration as described in White Calibration for Reflectives to see if this fixes the problem Striping in Dark Areas Only or Light Areas for Negatives If striping is only appearing in the dark areas of the original then you may need to make a CCD calibration which corrects for variations across the CCD for low light levels This type of striping is most noticeable when you are scanning 35 mm negatives See CCD Calibration on page 9 7 for instructions General Striping Problems If striping is visible in all types of scans regardless of the brightness or format of the original then there are many possible causes Try to clean the CCD and lens as described in Cleaning the Sensor and Optics on page 5 2 At the same time inspect the CCD and optics for scratches If the optics and or CCD surface are damaged then you must replace them See Replacing the CCD Sensor and or Board on page 5 5 and Replacing the Optics on page 5 8 If this doesn t help and you have checked the other possible causes described in the sections above then there may be a problem with the electronics Contact Imacon for advice the result
34. m for example changing a light tube From there you will be referred back to the appropriate section s of this chapter when necessary The Front Panel Removing the front panel See Figure 3 1 Pull the front panel outwards at the bottom to release it and then lift it upwards NOTE It may require a firm pull to release the panel Figure 3 1 The Front Panel Replacing the front panel Use the reverse of the procedure as when removing the panel but make sure to give it a firm push at the bottom to click it properly into position Service Manual Flextight 848 3 1 Covers and Panels 3 2 The Inside Cover The Inside Cover Removing the inside cover See Figure 3 2 Pull the cover upwards Figure 3 2 The inside cover Replacing the inside cover Use the reverse of the procedure as when removing the cover but make sure that the notches at the cover bottom fits into the holes in the base plate Service Manual Flextight 848 Covers and Panels The Side Covers 3 3 The Side Covers Removing the side covers See Figure 3 3 1 Remove the front panel as described in The Front Panel on page 3 1 2 Remove the two black allen screws one in each side using a 3 mm allen key Do not remove any other screws NOTE It may be easier to remove the screws if you have removed the inside cover as described in The Inside Cover on page 3 2 3 Remove the covers by pushing them slightly upwards and then
35. may be that you need to replace the main board or CCD sensor board Bands or Scattered Pixels If scans are showing colored bands or scattered colored pixels then there may be a problem with the home position of the drum See Drum Position Calibration on page 9 8 for further instructions Service Manual Flextight 848 Problem Diagnosis 2 2 No Image No Image If no image appears when making either transparency or reflective scans only then one of the light tubes is probably burnt out or the respective lamp driver board is defective Replace the appropriate tube or board as described in Replacing the Light Tubes on page 4 3 and Replacing a Lamp Driver Board on page 4 4 If the lights are working then there may be a faulty connection to the CCD Check the wires that connect to the CCD carriage see Replacing the CCD Sensor and or Board on page 5 5 If there is no obvious problem then you may need to change the CCD board or main board Contact Imacon for advice Drive Problems Lost Originals If a customer takes a preview or scan with the software set to use the A4 reflective holder but have instead mounted one of the transparency holders then the scanner may draw the original holder all of the way into the scanner and not eject it again It is possible for you to guide the customer through the procedure to fix this problem over the telephone However if you have already received the scanner you can easily fi
36. n page 5 2 10 Reassemble the lens and mount it inside the scanner using the reverse procedure you used to remove it being careful not to touch the top or bottom surfaces of the lens assembly 11 Mount all covers and panels in the reverse order of when they were removed Service Manual Flextight 848 The Drive System General 6 1 Part 6 The Drive System General This chapter provides procedures for replacing the various mechanical parts that are responsible for operating the drum that moves the originals in and out of the scanner These include e The original loader e The drum motor e The drum position sensor e The drive belts Replacing the Original Loader 1 Obtain the part you wish to replace from Imacon see Part 10 Spare Parts for order numbers 2 Remove the bottom panel as described in The Bottom Panel on page 3 4 3 Now you have access to the drum as shown in Figure 6 1 Original holder screws 3 pcs Spring device Original holder gripper Figure 6 1 Drum and Original Loader 4 Turn the drum until you have full access to the original loader NOTE If you turn the drum too fast you might hear a clicking sound this will not damage the drum or any other related part but you should try to avoid it 5 Remove the 3 screws holding the original loader onto the drum then push the spring device backwards and you can easily remove the original loader IMPORTANT To remove the screws it i
37. ons window see Figure 9 1 click on the Use file button then locate the calibration file you want to load and click on Open This will load the values from the file into the Current area 3 Click on OK to close the Motor Positions window and save the new settings Flash area will be updated with the loaded settings Service Manual Flextight 848 Calibration Saving Loading Calibration Settings Loading Factory Settings If you are having trouble with the focus calibration at one or more resolution settings then the problem will usually be solved by returning the scanner to its factory settings and then recalibrating the scanner as usual 1 2A Follow the procedure in Opening the Motor Positions Window on page 9 9 The Flash Factory area displays the factory settings Before proceeding check that the values look reasonable if all values are i e 0 you should not use the settings In this case you should contact Imacon to obtain a copy of the settings for this specific scanner In the Motor Positions window see Figure 9 1 click on the Use factory button Confirm that you want to overwrite the current positions with the factory positions by clicking OK Now the values shown in the Flash Factory area are loaded into the Current area effectively returning the scanner to its factory settings Click on OK to close the Motor Positions window and save the new settings Flash area will be updated with the loaded settings Re
38. or when drum is repositioning H Scan Indicator Red lights when scanning Do not touch the scanner while this indicator is lit If the light is flashing when not scanning then an error has occurred please contact your Flextight dealer for assistance enc ri rri Service Manual Flextight 848 Introduction Overview Diagrams 1 3 Cut Away View V CG CC C S A Figure 1 3 Cut away view of Flextight 848 CCD Housing this movable platform contains the CCD sensor Positioning Lead Screws for positioning of the CCD housing and optics housing for the appropriate resolution and original size Optics Housing holds the optics lens Focuses the image of the original on the CCD Upper Light Source illuminates reflective originals Lower Light Source illuminates transparent originals Drum rotates the original into the scanner and steps it past the CCD line of focus Original Holder a transparency holder is shown mounted and with the top layer held open w gt Qmamon Service Manual Flextight 848 1 4 Introduction Service Manual Flextight 848 Problem Diagnosis Striping in Images 2 1 Part 2 Problem Diagnosis Striping in Images One of the most common problems experienced by users of CCD scanners is the appearance of unwanted vertical stripes in the images This is caused by a flaw that affects a single pixel in the CCD which is then scanned across the fu
39. outwards NOTE It may require a firm push upwards to release the covers 2 pcs black allen screws 3mm Keyholes A Figure 3 3 The Side Covers Replacing the side covers Use the reverse of the procedure as when removing the covers but make sure that the 3 screws on the inside of each cover fits into the keyholes in the scanner chassis Service Manual Flextight 848 Covers and Panels 3 4 The Bottom Panel The Bottom Panel Removing the bottom panel See Figure 3 4 1 Lay the scanner carefully down on its back with the bottom facing you 2 Usea2 5 mm allen key to remove the screws located at each of the four corners of the bottom panel 3 Remove the bottom panel Figure 3 4 The Bottom Panel Replacing the bottom panel To replace the bottom panel simply use the reverse procedure as described above but make sure that the bottom panel flushes with the side covers Tighten the screws in an opposite diagonal sequence e g top left bottom right top right bottom left as indicated in Figure 3 4 Service Manual Flextight 848 Light Tubes General 4 1 Part 4 Light Tubes General The scanner contains two light tubes one for illuminating reflective originals from above the other for shining light through transparencies from below Each tube is controlled by a lamp driver board If scans are suddenly coming out black or all white if you are scanning negatives then one of the light tu
40. r locate the two allen screws 2 5 mm as pointed out in Figure SZ Loosen the screws app 3 rounds do not remove them SCSI address selector switch SUV i Ribbon cable holder Rear panel aennaen ssaaseuse Main board cover aos Screws Figure 8 2 Replacing the main board Lift the rear panel upwards and then turn it outwards against yourself Remove the ribbon cable holder and unplug all connectors from the board Lift the back panel assembly off the scanner If the replacement main board you have received is already built into a rear panel you should jump to Step 13 to continue the installation otherwise continue from Step 8 Remove all of the 11 allen screws that you can see on the face of the grey metal cover and remove the cover Unplug the SCSI address selector switch Use a5 5 mm wrench or socket wrench to remove all of the 11 stud screws holding the main board onto the rear panel Position the new main board on the back panel in the same position as the one you removed and secure it using all of the stud screws Mount the grey cover using the 11 allen screws Mount the rear panel assembly on the scanner by lowering the hinge brackets into the appropriate slots on the left side Service Manual Flextight 848 Main Board Replacing the Main Board 8 3 14 Reconnect all of the cables to the connectors on the main board There are 3 cables in all Also remember to connect the plug from the
41. r unusual sound e If a belt is loose or slipping because it has stretched or if a tension spring has come loose then the original will move into the scanner at an uneven rate and the scans will be distorted You may also hear a clicking sound as the belt slips The solution to this problem is to replace one or both of the drive belts using the procedure below 1 Obtain two drive belts and three tension springs from Imacon See Part 10 Spare Parts for ordering information 2 Remove the right side cover on your right when you are looking at the front of the scanner as described in The Side Covers on page 3 3 Rear drive wheel P i gt Securing plate Outer belt tension spring Drum tension spring Stud 3 Outer drive belt Inner belt tension spring Inner drive belt Drive wheel Figure 6 5 Replacing the drive belts 3 Remove the inner and outer belt tension springs Each of these springs is stretched between two screws To remove them stretch them slightly and pull them away from the relevant screws NOTE Do not remove the drum tension spring 4 Remove the outer drive belt 5 Use a 2 5 mm allen key to remove the three allen screws from the securing plate on the outside of the top wheel 6 Remove the plate NOTE The rear drive wheel will also come off when you do this 7 Remove the inner drive belt Service Manual Flextight 848 6 6 The Drive System Replacing the Drive Belts 10 T
42. rder of when they were removed Service Manual Flextight 848 5 7 Sensor and Optics 5 8 Replacing the Optics Replacing the Optics 1 The optics of two parts A Lens Unit the glass lenses and a Back Lens Ring including a permanent infrared filter Obtain the part you wish to replace from Imacon see Part 10 Spare Parts for order numbers 2 Connect the scanner to a computer that is capable of operating the scanner i e has a FireWire or SCSI connector and FlexColor installed 3 Makea preview with the software set to scan a 24x36 frame you do not need to mount an original or original holder This will put the lens carriage in a position where the optics parts are easy accessible 4 Turn off the scanner 5 Remove the front panel and inside cover as described in The Front Panel on page 3 1 and The Inside Cover on page 3 2 Back Lens Ring with Infrared Filter Lens Unit lens glasses Figure 5 7 The Optics 6 The lens unit is held in place by the back lens ring which you can see by looking inside the top of the lens carriage Hold the bottom part of the lens with one hand and unscrew the ring with your other hand Try not to touch the glass with your fingers When the ring comes off remove the ring and the lens 7 Replace any of the parts as required Reuse any part that is not damaged 9 Check all lens surfaces for dust and fingerprints clean as required See Cleaning the Sensor and Optics o
43. ribed in the following Replacing the Light Board 1 Obtain a replacement light board from Imacon See Part 10 Spare Parts for ordering information 2 Remove the 2 allen screws 2 5 mm 1 in each side as shown in Figure 7 1 Figure 7 1 Light table screws 3 Now turn the top of the light table to upright position as shown in Figure 7 2 on the next page Service Manual Flextight 848 The Light Table 1 2 Replacing the Light Board Metal bracket Metal bracket Ribbon cable Figure 7 2 Light board with ribbon cable and screws 4 Disconnect the ribbon cable from the plug by pulling the plug s locking device downwards to release the cable see Figure 7 2 5 Remove the 4 allen screws 3 mm and take out the light board Note that when you remove the screws the two metal brackets will also come loose 6 Mount the new light board and make sure that the board edges goes properly underneath the metal brackets Screw hole in metal bracket Figure 7 3 Light board assembling 7 Assemble the light table again observing the following see Figure 7 3 e If there is a gap at the light table front you will have to loosen the board again and readjust it Repeat until there is no gap e The screw holes in the metal brackets inside are placed a little higher than the holes in the light table sides This is to ensure that the screws will pull the light table top into its proper position when tightened Service M
44. s very important to use the suitable 2 0 mm allen key otherwise you might damage the screws If this should happen anyway you can use a torx bit to remove the screws Service Manual Flextight 848 6 2 The Drive System Replacing the Original Loader 6 10 11 Do one of the following e If you are replacing the complete original loader jump to step 9 to continue with the installation of the new loader e If you are replacing the flexible holder only you will have to move the gripper to the new flexible holder as described in the following Flexible Holder Magnets Figure 6 2 Original Loader assembly Dismount the gripper by removing the 3 allen screws see Figure 6 2 Assemble the gripper with the new flexible holder as shown Make sure that the magnets are placed properly into the grooves on the lower gripper part Mount the loader on the drum in the reverse order as when you removed it IMPORTANT Make sure that the lower gripper part fits properly onto the brackets on the drum before you tighten the screws Mount the bottom panel as described in The Bottom Panel on page 3 4 The drum will automatically move to feed position when the scanner is switched on Service Manual Flextight 848 The Drive System Replacing the Drum Motor Replacing the Drum Motor The drum motor rotates the drum when originals are loaded into the scanner If when you try to scan an image you can hear the s
45. t 848 Calibration White Calibration for Reflectives 4 Select White Calibration from the Maintenance window The External White Calibration window appears External white calibration External white calibration is used to ensure high quality reflective scans The calibration must be performed after installation thereafter it Should be repeated every 6 months or more frequently in the case of extensive Scanner usage The procedure is as follows 1 The best result is obtained by using the Imacon supplied white calibration sheet but good quality white paper can also be used It should cover the entire width of the 44 original holder the mininurn length is 210 rom 2 Place the calibration sheet at the tos of the 44 original holder aligned to the upper dotted line Make sure to use a new foil without scratches and fingerprints 3 Press Calibrate to start the calibration procedure 5 Click on Calibrate The scanner will take several scans of the white target The process will take about eight minutes Service Manual Flextight 848 Calibration CCD Calibration CCD Calibration To make sure all of the pixels in the CCD react equally to low levels of light the scanner s CCD should be calibrated If it is not you may see some faint single pixel striping in very dark areas of positives or in light areas of images that were scanned from negatives The problem which is present in all CCD scanners is most noticeabl
46. t can not be obtained you may have to replace the damper device See Replacing the Light Table Damper on page 7 4 for details Mount the left side cover as described in The Side Covers on page 3 3 Service Manual Flextight 848 1 3 7 4 The Light Table Replacing the Light Table Damper Replacing the Light Table Damper 1 10 11 Obtain a replacement damper from Imacon See Part 10 Spare Parts for ordering information Remove the left side cover on your left when you are looking at the front of the scanner as described in The Side Covers on page 3 3 Turn the light table to upright position Cover plate 13 mm wrench i Q Damper 5 mm allen key i Loosen A Tignten X Figure 7 5 Replacing the light table damper Open the cover plate below the light table Use a 5 mm allen key and a 13 mm wrench to remove the damper Mount the new damper and tighten it with your fingers only NOTE Make sure that the rod is mounted onto the appropriate stud Now make default adjustment Turn the allen key clockwise when looking at the scanner s left side and from the point where the rod holds on to the stud turn another 3 4 round Hold the allen key in place while tightening the nut Remove the tools and lower the cover plate Check light table movement See Adjusting the Light Table Damper on page 7 3 for information about correct movement of the light table and for readjusting it if necessary
47. t stop in the feed position but continue to turn until it hits the light table As a result the motor continues to turn and the drive belt begins to slip so that the scanner makes a clicking sound To replace the sensor use the procedure below 1 Obtain anew drum position sensor from Imacon see Part 10 Spare Parts for order numbers 2 Switch off and unplug the scanner 3 Remove the bottom panel as described in The Bottom Panel on page 3 4 and the right side cover as described on page 3 3 Drum drive wheel Sensor plug Drum position sensor Sensor unit locks Figure 6 4 Drum position sensor 4 Pull out the plug from the inside 5 Remove the sensor by pressing together the two small locks underneath the bracket 6 Mount the new sensor and finally connect the plug 7 Mount the panels and covers in the reverse order as when they were removed Service Manual Flextight 848 The Drive System Replacing the Drive Belts 6 3 Replacing the Drive Belts The scanner has two drive belts which make the mechanical connection from the drum motor to the drum They are made of rubber and might possibly become stretched or broken They are held in place by tensions springs which might also come loose or break Either of these problems will have the following effects e If one or more of the drive belts is broken then the original will never be drawn into the scanner when scanning You will hear the motor but no othe
48. tually found during the calibration are saved in the flash PROMs of the scanner and can be found in the DPI column The last two digits are really decimals but it is not possible to put a comma in the readout To read the resolution simply divide by 100 The precise CCD and Optic Lens positions are shown in corresponding row It is possible to adjust the calibrated motor positions manually if a fine tuning is necessary This is done by editing the CCD and Optic parameters in the Current area Service Manual Flextight 848 9 9 Calibration idles Advanced Focus and Position Calibration For instance the motor positions for the approximate 5760 dpi will primarily influence the frames 24x36 and 36x24 The motor positions for the approximate 2800 dpi will primarily influence the 60x60 frame and other frame in the vicinity of 60 mm width If you wish to make adjustments to the motor positions this should be done in relatively small intervals A change of 500 1000 steps at the time is recommended The CCD and Optic positions should be changed in pairs together and with the same amount Adding to the motor positions will move the focal point downwards Subtracting from the motor positions will move the focal point upwards It is a good idea to save a copy of the Motor Positions to a file before making any changes see Saving Settings to a File on page 9 2 The saved Motor Positions can then be retrieved from the file if something goes wron
49. x it yourself To get the original holder out 1 Turn off and unplug the scanner 2 Lie the scanner down on its back 3 Find the allen key hex wrench that came with your scanner and use it to remove the four screws that hold on the bottom panel of the scanner see The Bottom Panel on page 3 4 4 Itshould be very easy to see the original holder inside the scanner Remove it and make sure that the flexible original loader has not been bent out of shape If OK then reassemble the scanner otherwise you should replace the damaged part See Replacing the Original Loader on page 6 1 If the Drum Motor Does Not Turn Off Perform a Drum Position Calibration as described on page 9 8 If this calibration does not solve the problem and if after ejecting an original the drum motor continues to operate possibly making a clicking sound then the drum position sensor is probably defective or not properly connected See Replacing the Drum Position Sensor on page 6 4 for instructions If the Originals Are Not Loading Correctly If the scanner makes a clicking sound instead of loading an original when you begin to scan or if the original holder rotates slightly as it is drawn in then the passive rollers that regulate the original loading may be sticking If the rollers are not the problem then there may be something wrong with the springs or belts that drive the drum See Replacing the Drive Belts on page 6 5 for instructions
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