Page 1 March 2011 Revision: 1.0 Xerox DocuMate 4790 ® ® Service Manual...
Page 2 ® ® ® Design © 2011 Xerox Corporation. All rights reserved. XEROX , XEROX and Design and DocuMate are registered trademarks of Xerox Corporation in the United States and/or other countries. Content © 2011 Visioneer, Inc. All rights reserved. The Visioneer brand name and OneTouch® logo are registered trademarks of Visioneer, Inc.
Page 3 Detecting Bent Paper ..............50 Xerox DocuMate 4790...
Page 4 FAN ................80 Xerox DocuMate 4790...
Page 5 Other (Save Information) ............111 Xerox DocuMate 4790...
Page 6 ENDING SENSOR Board ..............211 Xerox DocuMate 4790...
Page 7 Tool ................. . . 244 Xerox DocuMate 4790...
Page 8 Table of Contents Xerox DocuMate 4790 Service Manual...
Page 9 11 • Standard for Repair Service on page 12 • For Service Technicians on page 13 • About Lead Free Solder (PbF: Pb free) on page 14 • About RoHS on page 15 Xerox DocuMate 4790 Service Manual...
Page 10 After servicing, be sure to restore the wire dressing, insulation barriers, insulation papers, shields, etc. Before returning the serviced equipment to the customer, perform the following electrical tests to prevent shock hazard. The power supply unit in this scanner contains dangerous levels energy. Xerox DocuMate 4790 Service Manual...
Page 11 Note: Some exposed parts may be isolated from the chassis by design. They read infinity. If the measurement is less than 1 M., there may be a danger of electric shock. Note: This hazardous condition must be corrected before the unit is returned to the end user. Xerox DocuMate 4790 Service Manual...
Page 12 When performing repairs, neither the products nor its parts or components shall be modified. If cable assembly is supplied as the smallest unit when servicing, make sure to replace the cable assembly. Xerox DocuMate 4790 Service Manual...
Page 13 When repairing, the following precautions will help to prevent recurring malfunctions. Cover plastic parts with aluminum foil. Ground soldering irons. Use a conductive mat on the worktable. Do not hold IC or LSI pins with bare fingers. Xerox DocuMate 4790 Service Manual...
Page 14 Pb free solder than the following solder, make sure to confirm that the solder maker (you use) has the license agreement for Pb free solder. Supplier: Senju Metal Industry Co., Ltd. (http://www.senju-m.co.jp) Part Description in Senju: EcoSolder RMA02 P3 M705 Series Xerox DocuMate 4790 Service Manual...
Page 15 RoHS legislation to spare parts, non-compliant spare parts cannot be used to repair compliant products put on the EU market on or after 1st July 2006. Therefore make sure to order and use RoHS-compliant spare parts listed in this manual. Xerox DocuMate 4790 Service Manual...
Page 16 Xerox DocuMate 4790 Service Manual...
Page 17 0.4 A (AC 100 V to 120 V) 0.2 A (AC 220 V to 240 V) (Standby) Sleep Mode 3.5 W or less (AC 100 V to 120 V) 3.5 W or less (AC 220 V to 240 V) Xerox DocuMate 4790 Service Manual...
Page 18 Boards Note: Distinction of PbF PCB PCBs manufactured using lead free solder will have a PbF stamp on the PCB. Option *3 Roller Cleaning Paper (KV-SS03) *3 Imprinter Unit (KV-SS014) *3 Ink Cartridge (KV-SS021) *4 Roller Exchange Kit (KV-SS039) Flatbed Scanner (KV-SS080) Xerox DocuMate 4790 Service Manual...
Page 19 Component Identification This chapter includes: • Main Part Names and Locations on page 20 • Control Panel on page 22 Xerox DocuMate 4790 Service Manual...
Page 20 3.1 Main Part Names and Locations Xerox DocuMate 4790 Service Manual...
Page 21 Xerox DocuMate 4790 Service Manual...
Page 22 4 DFS key When a double-feed occurs, push this key to continue scanning the double-feed detected sheet and the following sheet on the Hopper. 5 LED indicator Indicates the scanner status • Blue—Ready • Purple—Warning • Red—Error Xerox DocuMate 4790 Service Manual...
Page 23 30 • Installing DIMM Modules on page 33 • Connecting the Scanner to a Personal Computer on page 34 • System Requirements on page 35 • Installing the Driver and Software on page 36 Xerox DocuMate 4790 Service Manual...
Page 24 4.1 Minimum Space Requirements Be sure to maintain the recommended space requirements for proper ventilation. • Top View • Left-side View Xerox DocuMate 4790 Service Manual...
Page 25 4.2 Included Accessories Confirm that the following items are included with the scanner. Xerox DocuMate 4790 Service Manual...
Page 26 If the roller is not installed correctly, it may cause double feeding or a paper jam. Xerox DocuMate 4790 Service Manual...
Page 27 Cover does not stick up. If the cover is not closed properly, paper jams or damage to the paper may occur. Close the ADF Door. Push both sides of the ADF Door down slowly until it clicks into place. Xerox DocuMate 4790 Service Manual...
Page 28 A3. Set the Manual Feed Selector to "AUTO". Slide the Document Guides Selector in the direction of the arrow to unlock the Document Guides so that the guides can be slid independently from each other. Xerox DocuMate 4790 Service Manual...
Page 29 Note: Adjusting the left and right Document Guides to their original position Slide the Document Guides Selector to unlock the Document Guides. Spread the Document Guides as far apart as they will go. Slide the Document Guides Selector to lock the Document Guides. Xerox DocuMate 4790 Service Manual...
Page 30 Note 5: “X” • “X” in the Fig. 4.5.1 and Fig. 4.5.2 means the scanning will be suspended intermittently (START/ STOP function will operate.) even if the maximum amount of memory (total 1024 MB) is installed. Xerox DocuMate 4790 Service Manual...
Page 31 : 305 mm x 2,540 mm (12.0 x 100 in.) Mode Size Binary SC's Max Double Letter Legal Letter 8 bit Gray SC's Max Double Letter Legal Letter 24 bit Color SC's Max Double Letter Legal Letter Xerox DocuMate 4790 Service Manual...
Page 32 (Unit: MB) 305 mm x 2,540 mm (12.0 x 100 in.) Mode Size Binary + 8 bit SC's Max Gray Double Letter Legal Letter Binary + SC's Max 24 bit Color Double Letter Legal Letter Xerox DocuMate 4790 Service Manual...
Page 33 (1), and then push the module down in the direction of the arrow (2) until the notches of the module on both sides lock into place. Insert another DIMM Module similarly into the other memory slot (CN0018) on the CONTROL Board. Xerox DocuMate 4790 Service Manual...
Page 34 Only use the Power Cord and USB Cable enclosed in this scanner. • Be sure to connect the scanner directly to the USB interface port on the PC. We cannot guarantee that the scanner will work properly if it is connected to a USB hub. Xerox DocuMate 4790 Service Manual...
Page 35 • Microsoft, Windows, and Windows Vista are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. • All other trademarks identified herein are the property of their respective owners. Xerox DocuMate 4790 Service Manual...
Page 36 4.9 Installing the Driver and Software Following the instructions in the scanner’s Installation Manual, install the scanner driver and software that is included on the enclosed DVD-ROM. Xerox DocuMate 4790 Service Manual...
Page 37 Sectional View This chapter includes: • Bottom Block on page 38 • Back Block on page 39 • Upper Block on page 40 • Lower Block on page 41 Xerox DocuMate 4790 Service Manual...
Page 38 5.1 Bottom Block Xerox DocuMate 4790 Service Manual...
Page 39 5.2 Back Block Xerox DocuMate 4790 Service Manual...
Page 40 5.3 Upper Block Xerox DocuMate 4790 Service Manual...
Page 41 5.4 Lower Block 5.4.1. Mechanical Parts Xerox DocuMate 4790 Service Manual...
Page 42 5.4.2. Boards Xerox DocuMate 4790 Service Manual...
Page 43 Paper Feed Mechanism (Auto) on page 44 • Paper Feed Mechanism (Manual) on page 46 • Paper Feed Operation on page 47 • Glass Cleaning Mechanism (Auto) on page 49 • Detecting Bent Paper on page 50 Xerox DocuMate 4790 Service Manual...
Page 44 Sensor, the Paper Feed Motor will be driven to rotate the Double-feed Prevention Roller in the reverse direction to ensure separation of the first document from the following documents. At this time, the Paper Feed Roller rises to separate from the documents. Xerox DocuMate 4790 Service Manual...
Page 45 2nd document. 2 to 7 above are repeated. Note • When the scanner’s buffer becomes full, the scanner stops to prevent buffer overflow, while continuing to allow data to be transferred to the PC. Xerox DocuMate 4790 Service Manual...
Page 46 Double-feed Prevention Roller operates as a free roller.) Note • Do not scan multipart paper with the Manual Feed Selector set to “AUTO”. • When scanning multipart paper, be sure the Manual Feed Selector is set to “MANUAL”. Xerox DocuMate 4790 Service Manual...
Page 47 Roller will go down until the roller is in contact with, and then rotate in the paper feed direction. (Arrows 1 > 2 > 3 > 4) At this time, Separation Roller will also rotate in the paper feed direction. (Arrows 1 > 2 > 3) Xerox DocuMate 4790 Service Manual...
Page 48 Paper Feed Roller will rise and won't rotate. (Arrows 1 > 2 > 3) At this time, Separation Roller will also rotate in the paper feed direction. (Arrows 1 > 2 > 3) Xerox DocuMate 4790 Service Manual...
Page 49 After turning on the scanner or finishing scanning, this scanner will rotate the Conveyor Motor in the reverse direction of paper-feed to rotate the Reference Plates (F) and (B). This performance will enable the brush attached on the plates clean the glass surfaces. Xerox DocuMate 4790 Service Manual...
Page 50 6.5 Detecting Bent Paper When scanning the documents bound with staples and others to flip up them, this scanner will detect the flipped -up documents by using BENT PAPER S Sensor and BENT PAPER R Sensor. Xerox DocuMate 4790 Service Manual...
Page 51 Maintenance This chapter includes: • Maintenance Chart on page 52 • Cleaning on page 53 • Replacing Limited Life Parts on page 60 Xerox DocuMate 4790 Service Manual...
Page 52 • The maintenance schedule was determined according to paper standards (A4: 75 g/m / Letter: 20 lb.), which can vary greatly between users. Therefore, the values can also vary. Xerox DocuMate 4790 Service Manual...
Page 53 “Clear Counter for cleaning roller” with Service Utility. (See 9.3.4.) Cleaning Parts and Action • **Action Code means cleaning methods as follows: • C: Clean each surface with the included Roller Cleaning Paper or Model KV-SS03. (Option: Roller Cleaning Paper) Xerox DocuMate 4790 Service Manual...
Page 54 If the bag is left open for a long period of time before using it, the alcohol will evaporate. Please use the Roller Cleaning Paper immediately after opening the bag. • The Roller Cleaning Paper is available from sales channel. Xerox DocuMate 4790 Service Manual...
Page 55 (Don't clean the glass surface or its surroundings with the included Blower.) Note 4: *2 Direction for wiping rollers Xerox DocuMate 4790 Service Manual...
Page 56 (Fig. 7.2.2-2) Cleaning Position 1 (Rollers) Xerox DocuMate 4790 Service Manual...
Page 57 With the included blower, blow off any dirt on the self-cleaning brushes. After cleaning, rotate the plates in the direction of the arrow to return them to the original background color. Xerox DocuMate 4790 Service Manual...
Page 58 Exit Roller. When cleaning it, wipe off the dust on the roller surface all the way around it, proceeding from one end to the other in the direction of the arrows shown in the figure. Xerox DocuMate 4790 Service Manual...
Page 59 With the included Roller Cleaning Paper, clean the surface of the Exit Free Roller. With the included blower, blow off the dust on the Exit Sensor. Xerox DocuMate 4790 Service Manual...
Page 60 Note: Make sure that the lever of the Paper Feed Roller module is firmly locked. If the lever is not firmly locked, the lever or the module may become damaged or may not function correctly. Xerox DocuMate 4790 Service Manual...
Page 61 If the roller is not installed correctly, it may cause double feeding or a paper jam. • After replacing the Paper Feed Roller Module and Double-feed Prevention Roller, execute "Clear Counter for replacing roller" with Service Utility. (See 9.3.4.) Xerox DocuMate 4790 Service Manual...
Page 62 Xerox DocuMate 4790 Service Manual...
Page 63 Disassembly Instructions This chapter includes: • Disassembly Flowchart on page 64 • Bottom Block on page 67 • Back Block on page 68 • Upper Block on page 71 • Lower Block on page 79 Xerox DocuMate 4790 Service Manual...
Page 64 When reassembling, perform the steps in the reverse order unless otherwise instructed in Reassembling Notes. Note: Disassembly flowchart explanation * This sample flowchart shows that, to disassemble C, the procedures 1 and 2 must be performed first before proceeding to the procedure 3. Xerox DocuMate 4790 Service Manual...
Page 65 Xerox DocuMate 4790 Service Manual...
Page 66 Xerox DocuMate 4790 Service Manual...
Page 67 CONTROL Board. Disconnect all connectors (8 connectors and 1 flat cable) on the DRIVE Board. Remove the 2 screws that fasten the Heatsink. Remove the 6 screws on the DRIVE Board. Then, remove the DRIVE Board. Xerox DocuMate 4790 Service Manual...
Page 68 8.3.3. USS RELAY Board Remove the Rear Cover. (See 8.3.2.) Disconnect the 3 connectors. Then, release them from the clampers. Disconnect the flat cable. Remove the 3 screws. Then, remove the USS RELAY Board. Xerox DocuMate 4790 Service Manual...
Page 69 Release the connector from the clamper to release the plate from the scanner. Remove the 2 screws on both sides of Optical Unit Front. While holding up the Optical Unit Front, pull the unit horizontally and backwards to remove it. Xerox DocuMate 4790 Service Manual...
Page 70 8.3.5. Sub Exit Conveyor Assembly Remove the Optical Unit. (See 8.3.4.) Remove the 3 screws. Release the 3 claws of the Sub Exit Conveyor Assembly to remove it. Xerox DocuMate 4790 Service Manual...
Page 71 Remove the Light Unit (F). (Reassembling Note) • When reassembling the Light Unit (F) and the Optical Unit (F), be sure to reassemble the Optical Unit (F) first. Otherwise, the scanning position may shift. Xerox DocuMate 4790 Service Manual...
Page 72 Release the poly-slider that holds the Free Roller shaft. Remove the Free Roller Assembly. Remove the 2 screws on the STARTING SENSOR Board. After releasing the connector to the STARTING SENSOR Board from the clamper, disconnect the connector. Xerox DocuMate 4790 Service Manual...
Page 73 Reassembling Note: How to attach the spring With one side of the spring hung to a wire (about 3 inches long), reassemble the spring around the Reference Plate (B). Pass the wire behind the bearing for the plate. Xerox DocuMate 4790 Service Manual...
Page 74 Pull out and remove the Inner Cover T. 8.4.8. Top Cover Remove the Inner Cover T. (See 8.4.7.) Remove the 2 screws. Open the Imprinter Door, and then remove the 2 screws. Remove the Top Cover. Xerox DocuMate 4790 Service Manual...
Page 75 Remove the spring to release the Lock Assembly from the scanner. Remove the Lock Assembly. Remove the screw, and then disconnect the connector from the BENT RELAY Board. Pull out the BENT PAPER S (R) Board and BENT PAPER R (R) Board. Xerox DocuMate 4790 Service Manual...
Page 76 Pull out the BENT PAPER S (L) Board and the BENT PAPER R (L) Board. Disconnect the connector to the BENT PAPER S (L) Board. Disconnect the connector, and then remove the 2 screws on the BENT PAPER R (L) Board. Xerox DocuMate 4790 Service Manual...
Page 77 Remove the Imprinter Door. (See 8.3.1.) Remove the Top Cover. (See 8.4.8.) Remove the screw to release the PAPER FEED SELECT SENSOR Board with the plate from the scanner. Disconnect the connector and remove the screw. Xerox DocuMate 4790 Service Manual...
Page 78 Reinforcement Plate 2 to the scanner. Then remove the plate. Remove the 2 screws and the Free-roller Plate. Disconnect the connector to the SLIP DETECT SENSOR Board. Remove the screw on the SLIP DETECT SENSOR Board. Xerox DocuMate 4790 Service Manual...
Page 79 (1) and holding up the cover in the direction of the arrow (2), pull the cover forward. Disconnect the connector from the PANEL Board to release the Right Cover (with Right Front Cover) from the scanner. Xerox DocuMate 4790 Service Manual...
Page 80 Right Front Cover. Remove the 3 screws on the PANEL Board. 8.5.4. FAN Remove the Right Cover (with Right Front Cover). (See 8.5.1.) Remove the 2 screws. Disconnect the connector from the POWER Board. Xerox DocuMate 4790 Service Manual...
Page 81 Remove the 2 screws from the front right of the scanner. Remove the screw (a) and 2 screws (b) from the back right of the scanner. Then pull off the Power Box. Disconnect the 2 connectors to release the Power Box from the scanner. Xerox DocuMate 4790 Service Manual...
Page 82 8.5.8. Ionizer Board Remove the Power Box. (See 8.5.6.) Remove the 2 screws. Disconnect the 2 connectors to release the Ionizer Board's unit from the scanner. While releasing the holder’s 3 claws, pull out the Ionizer Board. Xerox DocuMate 4790 Service Manual...
Page 83 8.5.9. Left Cover Remove the 2 screws on the left of the scanner. Push the ADF Door Release to open the ADF Door. Remove the screw. While releasing the 3 claws, pull the Left Cover forward. Xerox DocuMate 4790 Service Manual...
Page 84 Loosen the 2 screws. (Loosening the 2 screws will make the belt tighten properly.) Tighten the 2 screws. 8.5.12.Double-feed Prevention Roller Push the ADF Door Release to open the ADF Door. Open and remove the Double-feed Prevention Cover. Xerox DocuMate 4790 Service Manual...
Page 85 While pull the Hopper Plate Assembly upward, release the 2 claws (Claw2) to remove the assembly. Remove the screw with a ground-lug and connector on the bottom of the assembly to release the assembly from the scanner. Xerox DocuMate 4790 Service Manual...
Page 86 Remove the screw, and then disconnect the connector. 8.5.16.DFP Pressure Motor Remove the Left Cover. (See 8.5.9.) Remove the Hopper Plate Assembly. (See 8.5.13.) Remove the screw (a) and 4 screws (b) on the Reinforcement Plate. Xerox DocuMate 4790 Service Manual...
Page 87 Disconnect the connector, and then remove the 2 screws to release the motor from the plate. 8.5.17.DFP HOME SENSOR Board Remove the DFP Pressure Motor. (See 8.5.16.) Remove the screw, and then disconnect the connector of the DFP HOME SENSOR Board. Xerox DocuMate 4790 Service Manual...
Page 88 Remove the Drive Belt. (See 8.5.11.) Remove the Inner Cover C. (See 8.5.18.) Remove the Inner Cover L. Remove the 2 screws that fasten the Heatsink for Conveyor Motor. Remove the 2 screws that fasten the Conveyor Motor in place. Xerox DocuMate 4790 Service Manual...
Page 89 Reassembling Note: Be sure to assemble the unit so that the claws of the unit can be matched with the square holes of the scanner. After removing the Conveyor 1, check whether the claws are properly inserted in the holes. Xerox DocuMate 4790 Service Manual...
Page 90 8.5.24.Light Unit (B) Remove the Scanning Glass (B). (See 8.5.23.) Remove the screw on the right, as seen from the back. Remove the screw and disconnect the connector on the left, as seen from the back. Xerox DocuMate 4790 Service Manual...
Page 91 Release the 2 poly-sliders on both sides that fasten the Reference Plate (F) to the scanner. Remove the Gear and poly-slider. Slide and remove the plate. Reassembling Note: How to attach the spring Refer to 8.4.6. Xerox DocuMate 4790 Service Manual...
Page 92 Remove the screw on the left, as seen from the back. Remove the Conveyor 1. 8.5.27.Drive Roller 2 Remove the Drive Belt. (See 8.5.11.) Remove the Conveyor 1. (See 8.5.26.) Pull out the Drive Roller 2 in the direction of the arrow. Xerox DocuMate 4790 Service Manual...
Page 93 Remove the Rear Cover. (See 8.3.2.) Remove the screw with a washer on the right, as seen from the back. Remove the screw on the left, as seen from the back. Remove the Conveyor 2. Xerox DocuMate 4790 Service Manual...
Page 94 Remove the Conveyor 2. (See 8.5.30.) Remove the Power Box. (See 8.5.6.) Remove the Drive Belt. (See 8.5.11.) Remove the Discharge Brush. (See 8.5.19.) Pull out the Exit Roller in the direction of the arrow. Xerox DocuMate 4790 Service Manual...
Page 95 Service Utility & Self Test This chapter includes: • Main Menu Indication for Service Utility on page 96 • List of Functions for Service Utility on page 97 • Operation on page 99 • Scanner Self-test on page 112 Xerox DocuMate 4790 Service Manual...
Page 96 Note: This is a main menu sample (Figure 9.1.1) of the Service Utility software (Version 1.0.0.5). • The software is the latest version at the time when this service manual is issued, but it is subject to change without notice. Xerox DocuMate 4790 Service Manual...
Page 97 Feed To check paper feed mechanism Sleep Mode To check whether sleep mode function works properly CCD Level Used to check the peak output-level after setting CCD lighting level on each side Xerox DocuMate 4790 Service Manual...
Page 98 : These items are also available in User Utility software. : This setting is needed when replacing CONTROL Board or IC0004. Remarks Parameter setting by user Status indication Parameter setting by service person Adjustment Diagnosis Maintenance Xerox DocuMate 4790 Service Manual...
Page 99 *** Caution*** The surface of the plate is dirty. The back reference plate may need to be cleaned. Please clean the back reference plate. — Scanner is not connected! Scanner is not connected to PC properly. Xerox DocuMate 4790 Service Manual...
Page 100 Fig. 9.3.2.2 Error Code Outline Error Contents No error Paper jam error Door open error Mechanical function error Paper sensor error Scanning error Other sensor error — Hardware Error Hardware Error — — — — — — Xerox DocuMate 4790 Service Manual...
Page 101 Front side gain adjustment error Front side black level adjustment error Back side gain adjustment error Back side black level adjustment error Double Feed Detector adjustment error Ionizer error (Ionizer ON error) Ionizer error (Ionizer OFF error) Xerox DocuMate 4790 Service Manual...
Page 102 Xerox DocuMate 4790 Service Manual...
Page 103 “STOP” on the “Sleep Mode” dialog box. Clean Imprinter Click “Clean Imprinter” on the main menu to clean the — This item is available only if the imprinter’s print head. optional Imprinter is installed to the scanner. Xerox DocuMate 4790 Service Manual...
Page 104 And click “OK” to scan the Shading Sheet. Reverse the Reference Plates to black according to the message on the display. And click “OK” Click “OK”, and then click “Close” to return to the main menu. Xerox DocuMate 4790 Service Manual...
Page 105 Click “Close” to get back the main menu. Key / Sensor Click “Key / Sensor” on the main menu. — Check key and sensor status on the Key / Sensor dialog box. Click “Close” to get back to the main menu. Xerox DocuMate 4790 Service Manual...
Page 106 Click “Sleep Mode” on the main menu. — Click “START” on “Sleep Mode” dialog box to enter into the sleep mode. Click “STOP” to get out of the sleep mode. Click “Close” to get back to the main menu. Xerox DocuMate 4790 Service Manual...
Page 107 Click “STOP” on the “Image Sensor Output” dialog box to finish the test. Click “Close” to return to the main menu. Open the ADF Door, and then remove the paper. Xerox DocuMate 4790 Service Manual...
Page 108 1st page: Front (Face-up) 2nd page: Back (Face -down) Click “All Position” on the main menu to execute scanning position & length adjustment. Check the Result. Click “OK” to get back to the main menu. Xerox DocuMate 4790 Service Manual...
Page 109 (Width) • Decreasing the number extends the scanning document width. If the appropriate scanning position can not be obtained by any of the manual adjustments, check installation. Xerox DocuMate 4790 Service Manual...
Page 110 CONTROL Board or IC0004. Click “Set” on the “USB ID” dialog box to store a new ID number for a new replaced CONTROL Board. Click “Close” to return to the main menu. Xerox DocuMate 4790 Service Manual...
Page 111 After changing the parameter, make sure to perform the scan- ning test, and to confirm that paper-jams do not occur. 9.3.8. Other (Save Information) Click “Save Info” on the main menu to save the scanner and the PC information as text files. Xerox DocuMate 4790 Service Manual...
Page 112 LED’s status is 3 (h)* Push the “Simplex/Duplex Button” once to start the test. Push the “Simplex/Duplex Button” once to stop the test. Turn off the scanner to finish the test. — — Xerox DocuMate 4790 Service Manual...
Page 113 ADF Door again and turn the two Reference Plates (F, B) to the black side. And close the ADF Door. After confirming the front LED is blue, turn off the — — scanner to finish the test. Xerox DocuMate 4790 Service Manual...
Page 114 After confirming the front LED is blue, turn off the — — ↓ scanner to finish the test. Lamp (F) ON Lamp (B) OFF ↓ Note: For LED and indicators’ position shown in the above figure, see Sec. 3. Xerox DocuMate 4790 Service Manual...
Page 115 Troubleshooting This chapter includes: • Troubleshooting-1 (with no error message on PC) on page 116 • Troubleshooting-2 (with an error message on PC) on page 117 • Requirement After Parts Replacement on page 131 Xerox DocuMate 4790 Service Manual...
Page 116 Hopper Tray. Rollers are dirty. Clean the rollers. Rollers are not attached to the default position Assemble the rollers properly again. properly when assembling. Rollers have reached their life expectancy. Replace the rollers after inspecting them. Xerox DocuMate 4790 Service Manual...
Page 117 → Paper Motor to CN4004 (DRIVE Board) 3. Check the following signals on the DRIVE Board. → CN4005-1, 3, 4, and 6th pins: See Fig. 1. 4. Replace faulty cables. 5. Replace Paper Feed Motor. Xerox DocuMate 4790 Service Manual...
Page 118 Configuration: Do the rollers swell irregularly? → Replace the roller. b. Whether the roller surface is dirty → Clean the surface. 4. Check whether the Drive Belt tension is proper. → Re-adjust the belt tension. Xerox DocuMate 4790 Service Manual...
Page 119 2. Paper dust exists on or around 1. Blow off the dirt with the accessory blower. Starting Sensor. (See Sec.7.) 2. Execute Key/Sensor and Sensor Sensitive Level tests in Sec. 9.3.6 to check the sensor condition. Xerox DocuMate 4790 Service Manual...
Page 120 2. Paper dust exists on or around 1. Blow off the dirt with the accessory blower. the Exit Sensor. (See Sec.7.) 2. Execute Key/Sensor and Sensor Sensitive Level tests in Sec.9.3.6 to check the sensor condition. Xerox DocuMate 4790 Service Manual...
Page 121 1. Execute Key/Sensor and Sensor Sensitive Level tests in Sec. 9.3.6 to define the sensor that results in this problem. 2. Blow off the dirt on the surface of the sensor with the accessory blower. (See Sec.7.2.) Xerox DocuMate 4790 Service Manual...
Page 122 DC 24V signal (CN2006-5th pin) b. JS_CLK (CN2006 9th pin) → 300 kHz c. USS / WAITING SENSOR USS+ (CN2011-7th pin) and USS-(CN2011-8th pin) → See Fig. 7. 7. Replace faulty parts or boards. Xerox DocuMate 4790 Service Manual...
Page 123 BPS_D_R (CN3015-3rd pin) → See Fig. 11. 6. Replace faulty parts or boards. U30 (ADF Door or 00 1. ADF Door or Imprinter Door is Shut the door properly. Imprinter Door is not closed enough. open.) Xerox DocuMate 4790 Service Manual...
Page 124 EEPROM (IC0004) and its surrounding circuit on the CONTROL Board. 2. Check the soldering condition of the CPU (IC0006-89,90, and 100th pins) and their surrounding circuit on the CONTROL Board. 3. Replace faulty parts or CONTROL Board. Xerox DocuMate 4790 Service Manual...
Page 125 CN4002 (DRIVE Board) to CN1002 (CONTROL Board) 4. Check the lamp control signals to the Lamp Driver. → IC4009-1st pin: 10 V → CN4002-27th pin: 0 V (when lamp is ON) 5. Replace faulty parts or boards. Xerox DocuMate 4790 Service Manual...
Page 126 4. Check the soldering condition of the all ICs and their surrounding parts on the CCD (B) Board. 5. Check the soldering condition of the CN1006, IC0002, and their surrounding circuit on the CONTROL Board. 6. Replace faulty parts or boards Xerox DocuMate 4790 Service Manual...
Page 127 (Ionizer Board) and CN1016 (CONTROL Board). 2. Check the following signals. CN1-1st pin: 12.7 V (during paper-feed) CN1-3rd pin: Approx. 2 V (during paper-feed) 3. Replace the high voltage power supply in the Ionizer module. Xerox DocuMate 4790 Service Manual...
Page 128 Xerox DocuMate 4790 Service Manual...
Page 129 Xerox DocuMate 4790 Service Manual...
Page 130 Xerox DocuMate 4790 Service Manual...
Page 131 Adjust Back Horizontal Position in Individual Position. BENT PAPER S(L) SENSOR Board 1. Execute “Bent Paper Sensor” (See 9.3.7.) to adjust BENT PAPER S(R) SENSOR Board sensor level. BENT PAPER R(L) SENSOR Board BENT PAPER R(R) SENSOR Board Xerox DocuMate 4790 Service Manual...
Page 132 Xerox DocuMate 4790 Service Manual...
Page 133 Circuit Description This chapter includes: • Block Diagram-1 (Image Processing) on page 134 • Block Diagram-2 (Board) on page 136 • Explanation of Connector on page 137s Xerox DocuMate 4790 Service Manual...
Page 134 The FPGA (ASIC: IC0030) receives front image signals from the AD converters (IC5007) on the CCD (F) Board, and then performs the line correction for them. After that, the Gate Array (IC0035) pre- processes them. Xerox DocuMate 4790 Service Manual...
Page 135 PC via the USB Interface. (Post-process means binary processing (simple binary, auto binary, dither, error diffusion), color, and gray scale image processing (MTF, Color Correction, Gamma Correction, etc.).) Xerox DocuMate 4790 Service Manual...
Page 136 PH-3S PH-3S CN2014 CN3004 PH-3S CN2008 CN2009 CN3014 PH-3S PH-4S CN3011 PH-3S PHDSS-8B CN2013 CN3009 PH-3S CN2011 CN1015 CN1014 PHDSS-8S 7614 DF11-10 DDR2 CN902 CN1016 87831 DDR2 FMN-34B CN1002 CN1001 XH-11B XH-11B CN4002 CN4001 FMN-34B Xerox DocuMate 4790 Service Manual...
Page 137 Ground 5V supply Ground 3.3V 3.3V supply Ground AFE_CLK AFE serial clock AFE_SDI AFE serial data in AFE_SENF AFE serial enable LSYNC_F Line sync *SRES Reset AFE_SDOF AFE serial data out CCD_REVF CCD_AFE Board revision Xerox DocuMate 4790 Service Manual...
Page 138 Pin No. Signal Name Description CN1007 CN2001 JS_DATA Double feed detector sensor out DFP_HOME DFP home detect Ground ENDING Paper exit *PEXIST Paper detect 5VSLP +5V for sensor +12V for analog ATT_ON Amplifer gain down Xerox DocuMate 4790 Service Manual...
Page 139 CN1001 (CONTROL Board) - CN4001 (DRIVE Board) Pin No. Signal Name Description CN1001 CN4001 24VIL +24V +14V Ground Ground Ground 3.3VCPU +3.3V for CPU ROM SRAM USBC 3.3VSLP +3.3V for ASIC DRAM 3.3VSLP +3.3V for ASIC DRAM Ground Ground Xerox DocuMate 4790 Service Manual...
Page 140 Conveyor motor mode C_M2 Conveyor motor mode C_M1 Conveyor motor mode C_CCW Conveyor motor mode C_ENB Conveyor mootor enable C_CLK Conveyor motor clock C_CUR Conveyor motor creent level Ground DRV_REV0 Drive Board revision DRV_REV1 Drive Board revision Xerox DocuMate 4790 Service Manual...
Page 141 — COMMON_RB +24V (Interlock switch and Fuse) — FEED_RB Paper Feed Motor phase (B+) — FEED_RA Paper Feed Motor phase (A+) — COMMON_RA +24V (Interlock switch and Fuse) — *FEED_RA Paper Feed Motor phase (A-) Xerox DocuMate 4790 Service Manual...
Page 142 — LED- LED cathode CN841 (POWER Board) - CN4003 (DRIVE Board) Pin No. Signal Name Description CN841 CN4003 Over voltage protect 3.3CPU 3.3CPU Ground Ground Ground *SLEEP_PWR Power Board Low mode *OVP Over voltage protect Xerox DocuMate 4790 Service Manual...
Page 143 Paper exit 5VSLP 5 V supply Ground CN2005 (USR RELAY Board) - CN2010 (USR SENSOR Board) Pin No. Signal Name Description CN2005 CN2010 USR+ Ultra sonic receive+ N.C. N.C. N.C. N.C. USR- Ultra sonic receive- Xerox DocuMate 4790 Service Manual...
Page 144 CN3009 (BENT RELAY Board) - CN2011 (USS / WAITING SENSOR Board) Pin No. Signal Name Description CN3009 CN2011 WAIT Wait 5VSLP 5 V Supply Ground N.C. N.C. N.C. N.C. N.C. N.C. USS+ Ultra sonic send+ USS- Ultra sonic send- Xerox DocuMate 4790 Service Manual...
Page 145 CN3013 (BENT PAPER SENSOR R (R) Board) - CN3015 (BENT PAPER SENSOR S (R) Board) Pin No. Signal Name Description CN3013 CN3015 LED Power LED Power N.C. N.C. BPS_D_R Bent paper LED Send(R) CN1018 [Control Board] - CN901 [Panel Board] Pin No. CN1018 CN901 Signal Name Description +12V Ground Xerox DocuMate 4790 Service Manual...
Page 146 Signal Name Description LED_SHDNX LED on-off signal LED_V(+5V) VDD(+3.3V) +3.3V Ground Ground Interface data bus Interface data bus Interface data bus Interface data bus Interface data bus Interface data bus Interface data bus Interface data bus Xerox DocuMate 4790 Service Manual...
Page 147 CN902 [PANEL Board] - LCD Module Pin No. CN701 LCD Module Signal Name Description Interface control signal Interface control signal Interface control signal RST B Interface control signal CS1 B Interface control signal Xerox DocuMate 4790 Service Manual...
Page 148 Xerox DocuMate 4790 Service Manual...
Page 149 201 Note 1 • The schematic diagrams are the latest at the time when this service manual is issued, but are subject to change without notice. Note 2 • N.M. means “Not Mounted”. Xerox DocuMate 4790 Service Manual...
Page 150 12.1CONTROL Board [The following 27 pages contain the control board diagrams.] Xerox DocuMate 4790 Service Manual...
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Page 178 12.2PANEL and SENSOR Boards [The next 9 pages contain the panel and sensor board diagrams.] Xerox DocuMate 4790 Service Manual...
Page 179 12.2.1.PANEL Board Xerox DocuMate 4790 Service Manual...
Page 180 12.2.2.DFP HOME SENSOR Board Xerox DocuMate 4790 Service Manual...
Page 181 12.2.3.ENDING SENSOR Board Xerox DocuMate 4790 Service Manual...
Page 182 12.2.4.PAPER FEED SELECT SENSOR Board Xerox DocuMate 4790 Service Manual...
Page 183 12.2.5.BENT RELAY Board Xerox DocuMate 4790 Service Manual...
Page 184 12.2.6.BENT PAPER SENSOR R(L) Board Xerox DocuMate 4790 Service Manual...
Page 185 12.2.7.BENT PAPER SENSOR R(R) Board Xerox DocuMate 4790 Service Manual...
Page 186 12.2.8.BENT PAPER SENSOR S (L) Board Xerox DocuMate 4790 Service Manual...
Page 187 12.2.9.BENT PAPER SENSOR S (R) Board Xerox DocuMate 4790 Service Manual...
Page 188 12.3RELAY and SENSOR Boards [The next 7 pages contain the relay and sensor board diagrams.] Xerox DocuMate 4790 Service Manual...
Page 189 12.3.1.USS RELAY Board Xerox DocuMate 4790 Service Manual...
Page 190 Xerox DocuMate 4790 Service Manual...
Page 191 12.3.2.USR RELAY Board Xerox DocuMate 4790 Service Manual...
Page 192 12.3.3.USR SENSOR Board Xerox DocuMate 4790 Service Manual...
Page 193 12.3.4.SLIP DETECT SENSOR Board Xerox DocuMate 4790 Service Manual...
Page 194 12.3.5.STARTING SENSOR Board Xerox DocuMate 4790 Service Manual...
Page 195 12.3.6.USS / WAITING SENSOR Board Xerox DocuMate 4790 Service Manual...
Page 196 12.4DRIVE Board Xerox DocuMate 4790 Service Manual...
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Page 201 12.5POWER Board Xerox DocuMate 4790 Service Manual...
Page 202 12.6LED Board Xerox DocuMate 4790 Service Manual...
Page 203 12.7CCD Boards Xerox DocuMate 4790 Service Manual...
Page 204 Xerox DocuMate 4790 Service Manual...
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Page 207 • Front Side on page 222 • Back Side on page 223 • CCD (F) Board and CCD (B) Board on page 224 • Front Side on page 224 • Back Side on page 225 Xerox DocuMate 4790 Service Manual...
Page 208 13.1CONTROL Board 13.1.1.Front Side Xerox DocuMate 4790 Service Manual...
Page 209 C0013 C0106 R0277 C0151 C0012 C0153 C0163 C0105 R0279 C0011 R0216 C0560 C0161 R0214 C0010 R0281 R0278 C0159 C0112 C0155 C0009 C0553 C0093 C0114 C0113 C0157 C0008 R0222 C0110 C0007 C0115 R0221 R0223 R0225 C0121 Xerox DocuMate 4790 Service Manual...
Page 210 13.2PANEL Board Xerox DocuMate 4790 Service Manual...
Page 211 13.3DFP HOME SENSOR Board R3005 C3005 CN3002 IC3001 DFP Home Board Magnification percentage:130 % 13.4ENDING SENSOR Board Ending Sensor Board IC3002 PJLPC0287ZB-c R3006 Q3004 PPB0D36ADF03C00 C3007 R3007 Magnification percentage:130 % Xerox DocuMate 4790 Service Manual...
Page 212 13.5PAPER FEED SELECT SENSOR Board CN3004 PPB0D36ADF03D00 Manual Feed Board PJLPC0287ZB-d Magnification percentage:200 % 13.6BENT RELAY Board PPB0D36ADF03E00 CN3008 PJLPC0287ZB-e JS3007 CN3005 JS3016 JS3017 Bent Relay Board CN3007 Magnification percentage:170 % Xerox DocuMate 4790 Service Manual...
Page 213 13.7BENT PAPER SENSOR R(L) Board PJLPC0287ZB-f CN3011 PPB0D36ADF03F00 Bent Sensor R(L) Board CN3010 Q3005 Q3006 Magnification percentage:170 % 13.8BENT PAPER SENSOR R(R) Board CN3013 PJLPC0287ZB-g Bent Sensor R(R) Board CN3012 PPB0D36ADF03G00 Q3007 Q3008 Magnification percentage:170 % Xerox DocuMate 4790 Service Manual...
Page 214 13.9BENT PAPER SENSOR S(L) Board D3004 D3003 PPB0D36ADF03H00 PJLPC0287ZB-h CN3014 Bent Sensor S(L) Board Magnification percentage:170 % 13.10BENT PAPER SENSOR S(R) Board D3006 D3005 PPB0D36ADF03J00 Bent Sensor S(R) Board CN3015 PJLPC0287ZB-j Magnification percentage:170 % Xerox DocuMate 4790 Service Manual...
Page 215 C2032 R2060 R2028 R2071 R2057 C2035 R2053 C2038 R2095 IC2002 C2040 R2073 C2033 C2036 C2047 C2037 R2090 C2041 C2048 C2046 R2091 R2098 IC2008 C2025 IC2003 R2062 R2077 PJLPC0288ZC-a R2055 R2023 R2068 R2051 Magnification percentage:170 % Xerox DocuMate 4790 Service Manual...
Page 216 13.11.2.Back Side R2031 CN2006 R2027 CN2012 R2031 R2027 CN2012 Magnification percentage:200 % Xerox DocuMate 4790 Service Manual...
Page 217 R2148 R2126 Q2022 C2074 R2151 C2084 R2144 C2065 R2147 C2087 C2086 IC2009 C2076 R2134 Q2021 R2136 R2137 R2133 R2128 C2067 C2075 Magnification percentage:170 % 13.13USR SENSOR Board PPB0D36ADF02C00 USR Board SN2002 PJLPC0288ZC-c Magnification percentage:300 % Xerox DocuMate 4790 Service Manual...
Page 218 13.14SLIP DETECT SENSOR Board Slip Detect CN2013 R2162 Q2024 Sensor Board C2091 R2161 IC2011 PPB0D36ADF02D00 C2092 PJLPC0288ZC-d Magnification percentage:170 % 13.15STARTING SENSOR Board PJLPC0288ZC-e Starting Sensor Board Q2025 R2164 IC2012 PPB0D36ADF02E00 C2094 R2163 Magnification percentage:180 % Xerox DocuMate 4790 Service Manual...
Page 219 13.16USS / WAITING SENSOR Board IC2013 CN2015 PJLPC0288ZC-f C2095 R2165 C2096 R2166 CN2017 CN2016 USS_Waiting Sensor Board PPB0D36ADF02F00 Magnification percentage:200 % Xerox DocuMate 4790 Service Manual...
Page 220 Q4007 R4037 R4063 R4036 C4040 C4039 C4038 C4081 R4073 C4053 R4049 D4012 R4061 C4073 C4045 R4060 C4070 CF4001 R4062 C4078 C4055 R4064 C4076 D4006 D4007 F4007 4.0A IC4006 C4046 C4109 R4014 R4013 D4021 R4010 L4013 Xerox DocuMate 4790 Service Manual...
Page 221 13.17.2.Back Side Xerox DocuMate 4790 Service Manual...
Page 222 D844 R863 R887 D843 R862 R886 IC841 R885 D849 R869 D846 D842 C845 R861 D847 R865 D848 R866 C848 C846 C841 Q844 Q846 C847 R871 T6.3A F841 250V R884 C842 CN841 Magnification percentage: 85 % Xerox DocuMate 4790 Service Manual...
Page 223 C829 D806 IC806 C807 R846 R841 C821 D808 Q802 R839 D805 R840 L804 L805 R847 R844 D804 R838 PRIMARY SECONDARY IC841 C848 C849 C847 C841 Q845 F841 C842 T6.3A 250V CN841 Magnification percentage: 85 % Xerox DocuMate 4790 Service Manual...
Page 224 13.19.1.Front Side REF No. 5000SERIES PJLPC0279ZB-a (FRONT) 2010.02.23 C103 C101 C104 C102 94V-0 C106 #PPB0D36OPT05A- REF No. (FRONT) PJLPC0279ZB-a C104 C106 #PPB0D36OPT05 5000SERIES 2010.02.23 C103 C101 C102 94V-0 PT05A- R80 R81 Magnification percentage: 150 % Xerox DocuMate 4790 Service Manual...
Page 225 CL41 CL42 CL31 CL28 CL43 CL18 CL29 CL34 CL26 CL24 CL23 CL35 CL21 CL36 CL25 CL22 CL37 CL38 CL32 CL39 CL40 CL30 CL27 CL41 CL42 CL31 CL28 CL43 CL29 CL33 CL16 CL10 CL12 CL11 CL18 Xerox DocuMate 4790 Service Manual...
Page 226 Xerox DocuMate 4790 Service Manual...
Page 227 The marking (TSCA) in the Remark column indicates that the part shown in the column consist of the substance which are included in the TSCA inventory. Note: PbF (Pb Free) • “PbF” in the Remark column means Pb Free solder is used to assembly part on the PCB assembly. Xerox DocuMate 4790 Service Manual...
Page 228 14.1Exterior Xerox DocuMate 4790 Service Manual...
Page 229 Left Cover ISO:PS PJJRC3570Z Control to Panel Cable PJHGC0059Z Stopper Rubber PJHEC0290Z Reflect Sheet 2 ISO:PC PNMC1044Z Shield Plate PNJE1091Z FG Cable L5DYDYY00002 PJJEC3484Z LCD-FFC XTW3+14LFJ Screw XTW3+10PFJ Screw XTW3+6LFJ Screw XTW3+8LFJ Screw XTW3+8PFJ Screw Xerox DocuMate 4790 Service Manual...
Page 230 14.2Main Chassis 1 Xerox DocuMate 4790 Service Manual...
Page 231 USR Relay to Ultra Sonic Receive Cable PJWP0D366M USR SENSOR Board PJMCC0120Z Double Feed Detector Plate PJDEB0024Z Collar PJHRC0547Z Conveyor 2 ISO:ABS PJJRC3513Z Drive to DFP Motor Cable PJHEC0291Z Reflector Sheet 3 ISO:PC XTB3+6FFJ Screw XTW3+10PFJ Screw XTW3+6LFJ Screw Xerox DocuMate 4790 Service Manual...
Page 232 14.3Main Chassis 2 Xerox DocuMate 4790 Service Manual...
Page 233 PJDVC0106Z Drive Belt PJUAC0327Z Main Chassis R Assy. PJDJC0121Z Bearing D8 XUC6FJ Retaining Rings E Type PJHRC0562Z Collar ISO:ABS PJBWC0074Z Damper Spring R PJBWC0073Z Damper Spring L Xerox DocuMate 4790 PJULC0118Z Supporting Plate R Service Manual PJULC0111Z Supporting Plate L...
Page 234 ISO:PA66 PJMYC0046Z Heat Sink (for Conveyor Motor) PJMYC0047Z Conveyor Motor Sheet PJULC0150Z Earth Conveyor Plate PJULC0151Z Earth Motor Harness J0KG00000013 Filter XTB3+6FFJ Screw XTW23+10LFJ Screw XTW3+10PFJ Screw XTW3+6LFJ Screw XTW3+8LFJ Screw XYN3+J6FJ Screw XYC3+FJ10FJ Screw Xerox DocuMate 4790 Service Manual...
Page 235 14.4Sub Chassis 1 Xerox DocuMate 4790 Service Manual...
Page 236 Sub Conveyor Plate PJUEC0459Z Reinforcement Plate 2 PJDVC0107Z Feed Belt PJDJ06061CZ Bearing PJJRC3530Z USS Relay to Bent Relay Cable PJDJC0119Z Bearing D6 PJNW610Z Washer ISO:PA66 PJUDC0092Z Imprinter Connector Holder Xerox DocuMate 4790 PNDK1003Z Separation Roller Holder PNHR1462Z Collar Service Manual...
Page 237 Safety Ref. No. Part No. Part Name & Description Remarks RWPS8-025 Spacer RWPS5-10025 Spacer XTB3+6FFJ-RP Screw XTW3+10PFJ Screw XTW3+6LFJ Screw XYN3+J6FJ Screw Xerox DocuMate 4790 Service Manual...
Page 238 14.5Sub Chassis 2 Xerox DocuMate 4790 Service Manual...
Page 239 DFP Sub Planet Plate Assy. PJDGC0166Z Feed Gear ISO:POM J0KG00000013 Ferrite Core PJBUC0163Z Emi Earth Plate Upper PJBVC0237Z Manual SW Lever Tension Spring RTP3+8(3)BC Screw XTB3+6FFJ-RP Screw XTW3+10PFJ Screw XTW3+6LFJ Screw XTW3+8LFJ Screw XYN3+F6FJ Screw Xerox DocuMate 4790 Service Manual...
Page 240 14.6Board Box Xerox DocuMate 4790 Service Manual...
Page 241 Emi Plate Spring PJHXB0005Z Insulating Sheet PJMCC0149Z Soft Gasket T50R-V0 Bundling Straps J0KD00000040 Ferrite Core PJUQC0010Z Clip LWS-2HV0 Locking Wire Saddle ISO:PA66 XSN3+6FJ Screw XTW3+30LFJ Screw XTW3+10PFJ Screw XTW3+6LFJ Screw XTW3+8LFJ Screw XTW3+8SFJ Screw XYN4+F6FJ Screw Xerox DocuMate 4790 Service Manual...
Page 242 14.7Packing Xerox DocuMate 4790 Service Manual...
Page 243 Driver DVD K1HY04YY0002 USB Cable PJIUA0001Z Blower Brush K2CG3YY00063 Power Cord for 4790-US K2CM3DH00012 Power Cord for 4790-EU K2CT3DH00024 Power Cord for 4790-EU PJPNC0286Z DFP Roller Pad PBHSA0055Z Roller Cleaning Paper TSCA PJPEC0195Z CD-ROM Pad Xerox DocuMate 4790 Service Manual...
Page 244 PBQX90095Z-J Test Chart A (A4) (10 Pieces) PJQXC0330Z-J Shading Sheet (10 Pieces) PBQX90104Z-J Test Chart A (10 Pieces) PBQX90105Y-J Test Chart B (10 Pieces) T4E30725-2 Polyester Tape (19mm) T4E307100 Polyester Tape (100mm) RMA02M705-08 Eco Solder Xerox DocuMate 4790 Service Manual...
Page 246 up to 10 Visioneer Vendor Part week lead Part Name / Description Part No. time for * parts Exterior 65-1171- Hopper PJKNC0047Z-1 65-1172- Reflector Sheet 1 (for Paper Sensor) PJHEC0289Z 65-1173- Document Fixing Pad 2 PBHEA0049Z 65-1174- Document Guide Selector PJBDC0002Z-1 65-1175- Document Guide L...
Page 247 65-1197- PANEL Board PJWP0D361M-1 65-1198- Control Sheet PNHX1426Z 65-1199- Right Front Cover PJYK0D360M-1 65-1200- Right Cover PJKMC0076Z-1 65-1201- Blind Cover PJKEC0096Z 65-1202- Inner Cover C PJKEC0094Z 65-1203- Caution Label (Small Size) PJQTC0266Z 65-1204- Exit Sub Guide PJHRC0561Z 65-1205- Extension Sub Tray PJHRC0560Z 65-1206- Exit Stopper...
Page 248 65-1226- Screw XTW3+8PFJ Main Chassis 1 65-1227- DFP Press Shaft PJDFC0322Z 65-1228- DFP Press Plate PJUEC0456Z 65-1229- DFP Adjustment Spring PJBVC0220Z 65-1230- DFP Adjust Drive Shaft PJDFC0321Z 65-1231- Spacer PJNW525Z 65-1232- Auc Gear PJDGC0088Z 65-1233- Poly Slider PJNW317Z 65-1234- DFP Drive Bracket PJUEC0455Z 65-1235- Bearing...
Page 249 65-1255- DFP Idle Gear Z16 PJDGC0290Z 65-1256- DFP Roller Support PJHRC0536Z 65-1257- DFP Earth Plate PJBUC0157Z 65-1258- DFP Drive Shaft PJDFC0319Z 65-1259- DFP Drive Gear Z14 PJDGC0289Z 65-1260- Polyslider PJNW212Z 65-1261- Retard Roller Sleeve PJDYC0021Z 65-1262- DFP (Double-Feed Prevention) Roller PJDRC0185Z 65-1263- DFP Roller Shaft...
Page 250 65-1284- USR Relay to Ultra Sonic Receive Cable PJJRC3521Z 65-1285- USR SENSOR Board PJWP0D366M 65-1286- Double Feed Detector Plate PJMCC0120Z 65-1287- Collar PJDEB0024Z 65-1288- Conveyor 2 PJHRC0547Z 65-1289- Drive to DFP Motor Cable PJJRC3513Z 65-1290- Reflector Sheet 3 PJHEC0291Z 65-1291- Screw XTB3+6FFJ 65-1292-...
Page 251 65-1312- Micro Switch K0KABF000018 65-1313- Ionizer Board Holder (Upper) PJHRC0565Z 65-1314- Ionizer Board MPH4129A 65-1315- Control to Ionizer Power Cable PJJRC3509Z 65-1316- Reference Plate (F) PJZR0D360M 65-1317- Ionizer (Ion Outlet) MHM008-50 65-1318- Ionizer Holder L PJHRC0567Z 65-1319- Ionizer Holder R PJHRC0575Z 65-1320- Drive Roller 1...
Page 252 65-1341- Stopper Holder PJHRC0543Z 65-1342- Stopper Spring PJBXC0018Z 65-1343- Stopper PJHRC0542Z 65-1344- Gap Roller PJHRC0541Z 65-1345- Bearing D5 PJDJC0120Z 65-1346- Gear PBDGA0061Z 65-1347- Platen Spring PJBVC0225Z 65-1348- CCD(B) Junction to CCD(B) PJJRC3526Z 65-1349- Support Bearing PJDJC0118Z 65-1350- Platen Connect Spring PJBVC0226Z 65-1351- Gear Z26M0.5...
Page 253 65-1370- USR Relay to Ultra Sonic Receive Cable PJJRC3521Z 65-1371- USR Relay to Ending Sensor Cable PJJRC3520Z 65-1372- USR Relay to DFP Home Cable PJJRC3519Z 65-1373- USR Relay to Paper Sensor Cable PJJRC3518Z 65-1374- Drive to Conveyor Motor Cable PJJRC3512Z 65-1375- Noise Grounding Clamp EMT-2N...
Page 254 65-1399- Bent Sensor to Bent Sensor(T) Cable PJJRC3529Z 65-1400- Feed Chassis PJUAC0321Z 65-1401- Balancer Spring PJBXC0019Z 65-1402- Feed unit Damper sheet PJHEC0265Z 65-1403- BENT RELAY Board PJWP0D36CM 65-1404- Mini Clamp HC-6B 65-1405- Pcb Bracket L PJUEC0460Z 65-1406- Bent Relay to Imprinter Start Cable PJJRC3525Z 65-1407- SLIP DETECT SENSOR Board...
Page 255 65-1428- Separation Roller Pipe PJZG0D361M 65-1429- Separation Roller PNDR1036Z 65-1430- Separation Roller Shaft PNDF1060Z 65-1431- Idle Pulley Gear T16/Z20 PJDAC0024Z 65-1432- Pick Up Roller Holder PJHRC0540Z 65-1433- Torque Limiter 0TLR6-500A 65-1434- Pick Up Belt PJDVC0108Z 65-1435- Pulley T17 PJDAC0025Z 65-1436- Feed Unit Fulcrum PJDJC0117Z 65-1437-...
Page 256 65-1457- Washer PJNW610Z 65-1458- Imprinter Connector Holder PJUDC0092Z 65-1459- Separation Roller Holder PNDK1003Z 65-1460- Collar PNHR1462Z 65-1461- Spacer RWPS8-025 65-1462- Spacer RWPS5-10025 65-1463- Screw XTB3+6FFJ-RP 65-1464- Screw XTW3+10PFJ 65-1465- Screw XTW3+6LFJ 65-1466- Screw XYN3+J6FJ Sub Chassis 2 65-1467- DFP Planet Plate PJUEC0463Z 65-1468- Bearing...
Page 257 65-1485- Locking Wire Saddle LWS-1S 65-1486- Lock Shaft PJDFC0341Z 65-1487- Hook R PJULC0113Z 65-1488- Hook L PJULC0114Z 65-1489- Lock Plate PJULC0115Z 65-1490- Lock Lever Spring PJBVC0230Z 65-1491- Reference Plate (B) PJZR0D368M 65-1492- Sub Center Plate PJUEC0469Z 65-1493- Control to CCD Lvds(Front) Cable PJJRC3502Z 65-1494- Control to CCD Power(Front) Cable...
Page 258 65-1514- USS RELAY Board PJWP0D364M 65-1515- Locking Mini Clamp LAMS-05 65-1516- Control to USS Relay FFC Cable PJJEC3479Z 65-1517- USS Relay to Bent Relay Cable PJJRC3530Z 65-1518- USS Relay to Starting Cable PJJRC3524Z 65-1519- FG Cable (Sub to Main) PJJTC0036Z 65-1520- Mini Clamp Side-Slot YMC-15-0-V0...
Page 259 65-1543- Main Drive Power Cable PJJRC3165Z 65-1544- Control to Drive FFC Cable PJJEC3478Z 65-1545- Drive to Power Junction Cable PJJRC3532Z 65-1546- Drive to Feed Motor Cable PJJRC3511Z 65-1547- Drive to Conveyor Motor Cable PJJRC3512Z 65-1548- Drive to Interlock SW Cable PJJRC3514Z 65-1549- Drive to LED(Front) Junction Cable...
Page 260 65-1572- Power to Power Junction Cable PJJRC3510Z 65-1573- Power to FAN Cable PJJRC3538Z 65-1574- Power Box Cover PJMCB0096Y 65-1575- Power Sheet T PJHXC0002Z 65-1576- AC Switch Cable PJJRC3517Z 65-1577- Silicone Sheet PJHEC0287Z 65-1578- Heat Sink (for Drive Board) PJMYC0045Z 65-1579- Filter J0KG00000013 65-1580-...

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