Lexmark™ C920 5056-xxx Lexmark Repair Catalog The following information is from Lexmark's Service Mnaual. The following paragraph does not apply to any country where such provisions are inconsistent with local law: LEXMARK INTERNATIONAL, INC. PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
5056-XXX Repair information Handling ESD-sensitive parts Many electronic products use parts that are known to be sensitive to electrostatic discharge (ESD). To prevent damage to ESD-sensitive parts, use the following instructions in addition to all the usual precautions, such as turning off power before removing logic boards: • Keep the ESD-sensitive part in its original shipping container (a special “ESD bag”) until you are ready to install the part into the machine.
5056-XXX RIP board/operator panel replacement Warning: If the operator panel and the RIP board are being replaced at the same time, replace the parts in this order to avoid damage to the machine. 1. Replace the RIP card first. Note: Do not replace the new operator panel and RIP card in the machine at the same time. 2. After installing the new RIP card, and before installing the new operator panel, start the printer. 3.
5056-XXX Check finisher alignment when moving or servicing the finisher After moving or servicing the finisher, print some test pages to the finisher to ensure the vertical and horizontal alignment is correct. If the finisher is not properly aligned, refer to “Aligning the finisher and printer” on page 3-59 for alignment instructions.
056-XXX Adjustments High-capacity paper feed timing belt adjustment 1. 2. 3. 4. 5. Secure the bracket with the screw, as shown. Attach the spring and washer to the bracket with the screw. Adjust the screw to 6mm ±1mm. Tighten the screw completely. Adjust the timing belt on the rear in the same manner. Adjustments and procedures following parts replacement Note: When troubleshooting, or prior to making any adjustment to print quality, always be sure: • The printer is installed on a level, rigid surface.
5056-XXX Transfer belt If you replace the transfer belt, check the printer alignment (X, Y, and Theta), adjusted in diagnostic mode. LED printhead controller board or LED printhead If you replace the LED printhead controller board or LED printhead, check and adjust the following items in diagnostic mode: Printer Alignment (X, Y, and Theta) Print the alignment pages. Make sure that you installed the EEPROMS supplied with the printhead on the printhead controller board.
5056-XXX Removals Cover, top removal 1. Open the top unit, and remove the photodevelopers and toner cartridges. Cover the photodevelopers to avoid damage from exposure to the light. 2. Remove the two silver screws, and remove the spacer. 3. Remove five black screws from the bottom and the four silver screws from the back side. 4. Remove the top cover. Note: When replacing the top cover, avoid pinching or cutting wires that connect the printhead controller board to the face down unit.
5056-XXX Front door / operator panel removal Warning: If the operator panel and the RIP board are being replaced at the same time, replace the parts in the order described in steps a through d below to avoid damage to the machine. a. Replace the RIP card (this must be the first part replaced). b. Restart the printer. Let the machine finish the startup cycle, which takes several minutes. The machine is silent when startup is complete. c. Install the new operator panel. d.
5056-XXX 8. Remove six screws (C) that hold the operator panel to the front door. 9. Remove the operator panel from the door. Note: If the USB cable or the operator panel cable is being replaced, use the toroids from the old cables with the new cables. Cover, front left removal 1. Open the front cover and remove the cassette. 2. Remove the left front cover by removing the three silver screws.
5056-XXX Cover, rear removal 1. Open the top unit. 2. Remove the three silver screws from the rear cover, and then remove the cover. Cover, solenoid removal 1. Remove the screw from the solenoid cover. 2. Remove the solenoid cover. Cover, left side removal 1. Remove the upper cassette, front cover, paper exit tray, and duplex unit. 2. Remove the five screws from the left side cover, and remove the cover.
5056-XXX Cover, right side removal 1. Open the top unit, and remove the front cover and upper cassette. 2. Remove the operator panel cable and the USB cable from the operator panel. (See “Front door / operator panel removal”.) 3. Remove the seven screws from the right side cover together with the turn guide, and remove the cover. 4. When installing the right side cover, insert the turn guide shaft into the bearing.
5056-XXX Cover, RIP board removal Warning: If the operator panel and the RIP board are being replaced at the same time, replace the parts in this order to avoid damage to the machine. 1. Replace the RIP card first (this must be the first part replaced). 2. Restart the printer. Let the machine finish the startup cycle. This takes a few minutes. The machine is silent when startup is complete. 3. Install the new operator panel. 4. Restart the printer, and let the startup cycle complete.
5056-XXX Tray, paper exit removal 1. Unlatch the hinge at the back side, then unlatch the hinge on the front side. 2. Remove the paper exit tray. Belt up/down clutch removal 1. Remove the RIP cover, electronic box, printer controller card, and HVPS board. 2. Unplug the belt up/down clutch cable from CN1 in the CK1 daughter card board. 3. Remove the C-clip from the belt up/down clutch, and remove the clutch.
5056-XXX Cassette guide removal 1. Remove the paper feed frame. 2. Remove the front cover, cassette, turn guide, right side cover, and paper feed frame. 3. Remove the screws from the cassette guide, and remove the guide. CK1 daughter board removal 1. 2. 3. 4. Remove the front, right, left rear, and rear covers. Remove printer controller board and HVPS board. Disconnect all cables from the daughter board.
5056-XXX Connector, duplex unit removal 1. Open the top unit and remove the upper cassette, left front cover, paper feed cover, left side cover, RIP 2. 3. cover, RIP board, RIP box, and the electronic box. Remove the turn guide, open the paper feed cover, and remove the duplex unit. Remove the left side cover and power supply A. Disconnect the connector, and remove the two screws from the mounting plate. Remove the two screws of the drawer connector from the mounting plate drawer bracket.
5056-XXX Density sensor removal/Separation fingers removal/Sensor cleaner removal 1. Open the top unit and remove the belt unit. 2. Remove the three screws from the sensor bracket. 3. Remove the harness band and remove the two screws from the density sensor from the sensor bracket. 4. Remove the three set screws from the sensor cleaner assembly from the sensor bracket. 5. Remove the four separating finger screws from the fuser entrance guide. Drive gear unit sensor assembly removal 1.
5056-XXX Electronic box removal 1. 2. 3. 4. Open the top unit, and remove the back cover. Remove the RIP board cover. Remove the RIP board. Remove the screws from the electronic box. 5. Disconnect all cables from the rear of the electronic box, and remove the box.
5056-XXX Face up paper exit assembly removal 1. Open the top unit, and remove the upper cassette. Open the duplex cover, and remove the duplex unit. 2. Remove the left front cover, left side cover, and rear cover. 3. Remove the three screws from the face up delivery assembly, and remove the assembly. Front cover open switch actuator removal 1. Open the front cover. 2. Remove the two screws from the front cover open switch actuator.
5056-XXX Fuser removal 1. Open the top unit. 2. Pushing the front and back lock, hold the handle, and then raise and remove the fuser.
5056-XXX Gear cover removal/Multipurpose feeder frame assembly 1. Open the top unit, and remove the upper cassette, front cover, multipurpose feeder, right side cover, and turn guide. 2. Remove the two screws from the gear cover, and remove the cover. 3. Remove the four screws from the multipurpose feeder frame and the ground screw. 4. Disconnect the connector of the multipurpose feeder paper feed sensor. 5. Pull out the multipurpose feeder frame slightly. 6.
5056-XXX High voltage power supply board (HVPS) removal Note: When removing the high voltage power supply, be careful to avoid damaging the secondary daughter card (Q906). If the daughter card gets damaged, a 925 service error will result. 1. Open the top unit, and remove the RIP cover, RIP board, RIP box, electronic box, and printer controller board. 2. Remove the five screws from the printer controller board bracket. 3. Remove the connectors, and then remove the 12 screws. 4. Remove the HVPS board.
5056-XXX 5. Disconnect the affected LED printhead connectors from the printhead controller board. Remove the screw from the ground wire located on the LED printhead. 6. Remove the LED printhead and the cables from the printer. When replacing the LED printhead, replace the corresponding EEPROM, shipped with the printhead, on the printhead controller board. Note: The LED printhead light intensity values do not have to be entered for the printer. Eraser removal 1.
5056-XXX Lock handle assembly removal 1. 2. 3. 4. Open the top unit. Turn the plastic latch on the front and rear sides 90°. Remove the spring. Remove the lock handle assembly.
5056-XXX Main drive unit removal 1. Open the top unit, and remove the gear cover, upper cassette, left front cover, paper feed cover, RIP cover, 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. RIP board, RIP box, electronic box, and rear cover. Open the turn guide and paper feed cover, and remove the duplex unit. Remove the left side cover, power unit 1, and power unit 2. Remove the printer controller board. Remove the bracket, HVPS board, and sub frame R.
5056-XXX 14. Remove the screw from the clutch stopper. The clutch stopper is attached to the ground plate with two screws. 15. Remove the six screws on the right side. 16. Remove the two screws from the drive unit, and remove the unit. 17. Remove the E-clip on the belt up/down clutch, and remove the changing shaft from the drive unit. 18. Remove the three screws from the belt up/down clutch box, and remove the belt up/down clutch. 19. Remove the screw from the drum gear sensor, and remove the sensor.
5056-XXX Main unit fan removal 1. Remove the left side cover, the solenoid cover, and the rear cover. 2. Remove the LVPS (low voltage power supply) 1. 3. Remove two screws from the main unit fan bracket. 4. Disconnect the fan power cable from CN6 on the CK2 daughter card board. 5. Remove the fan. Motor drive board removal 1. Remove the upper cassette, front cover B, paper feed cover, and the left side cover. 2.
5056-XXX Multipurpose feeder tray removal 1. Open the top unit, and remove the front cover, cassette feeder, turn guides and right side cover. 2. Open the multipurpose feeder and slide it toward the magnet in the direction of the arrow, removing it from the printer. Paper feed unit removal 1. 2. 3. 4. 5. Remove the front, right, left rear, and rear covers. Remove the printer controller board and HVPS board. Unplug connectors CN23, CN16, CN10, CN20, CN12, CN15, and CN7 on the CK1 daughter card board.
5056-XXX 6. Remove the paper feed gear unit, paper feed clutch, and two gears (C) not held in place with an E-clip. 7. Remove the 3 screws (D), and remove the cassette guide. 8. Remove the brass screws (E) on the left side of the paper feed unit. 9. Remove the paper feed unit, being careful to route the sensor cabling through the wire guides.
5056-XXX Paper-feed rollers removal Paperpath maintenance A paper path maintenance kit can be used when a machine is experiencing misfeeds and jams after 200,000 pages. The order number for this kit is 40X1109.
5056-XXX Paper carrying frame removal / roll removal 1. Open the top unit, and remove the upper cassette, front cover, turn guide, multipurpose feeder, right side 2. cover, turn guide, OHP detection sensor (upper), multipurpose feeder frame, back cover, RIP cover, RIP board, RIP box, and electronic box. Remove the four screws from the paper carrying frame. 3. Remove the paper carrying frame.
5056-XXX Registration frame Registration clutch removal 1. Open the top unit, open the turn guide, open the paper feed cover, and pull out the duplex unit halfway. 2. Remove the two screws from the registration frame. 3. Remove the registration clutch. Note: When installing, set the clip of the registration clutch to the stopper. Registration sensor removal 1. Open the top unit, and remove the upper cassette, front cover, turn guide, multipurpose feeder, right side cover, and multipurpose feeder frame.
5056-XXX Relay roller removal Note: This removal can be used for the expansion paper-feed unit relay roller removal as well. 1. Remove the paper feed unit from the machine. 2. Remove the e-clips and bushings from each end of the relay roller shaft. 3. Remove the five screws (A) that hold the top metal plate on the unit. A A 4. Remove the top plate from the paper-feed unit. 5. Slide the relay roller to the right (B), and tilt the roller up and out of the unit. B C 6.
5056-XXX Face down guide assembly removal 1. Remove the top cover. 2. Disconnect the connector, and remove the five screws and two snap bands from the face down guide assembly. 3. Remove the four screws from the face down cover and the face down guide assembly, and remove the assembly. Note: When replacing the face down unit, use a tie to hold back the wiring that connects the printer controller board to the face down unit.
5056-XXX 3. Remove the rear cover. 4. Remove the motor and drive belt from the exit roller shaft. 5. Remove the grounding strip (A).
5056-XXX 6. Remove the e-clips and bushings (A) from both ends of the exit roller shaft. 7. Pull the guide rib (A) to the left.
5056-XXX 8. Remove the exit roller. Power supply 1 removal 1. Unplug the power cord from the printer. 2. Open the top unit, and remove the RIP cover, RIP board, RIP box, and electronic box. Remove the cassette, left front cover, and back cover. Remove the left side cover. 3. Remove the insulation sheet connector, yellow ground wire, five screws, two screws with washers, and two screws with spring washers. 4. Disconnect CN106 and CN04 at power supply 2. 5. Remove the power supply.
5056-XXX Power supply 2 removal 1. Unplug the power cord from the printer. 2. Open the top unit, and remove the RIP cover, RIP board, RIP box, and electronic box. 3. Disconnect the connector, and remove the seven screws from power supply 2, and remove the power supply. Note: After replacing any board on the printer, ensure all the connections are properly connected before closing the covers.
5056-XXX Power switch removal 1. Remove the upper cassette, left front cover, paper feed cover, and left side cover. 2. Unlock the power switch, and pull out the power switch. 3. Remove each terminal connected to the power switch. Note: When connecting, be careful to connect the connectors correctly. Insert the insulator cover, completely covering the terminal. Printer controller removal 1. Open the top unit, and remove the RIP cover, RIP board, RIP box, and electronic box. 2.
5056-XXX Printhead controller board removal 1. Remove the top cover, and then remove the 20 printhead controller board connectors. 2. Remove the six screws from the printhead controller board and remove the board. Note: When replacing the board, be sure to return the four EEPROMs on the former board to the same positions on the new board.
5056-XXX Left slide rail removal 1. Remove the upper cassette. 2. Remove the screw from both left and right slide rails. RIP box removal 1. Remove the six screws from the RIP box. 2. Slightly lift and remove the RIP box.
5056-XXX Sensor board removal 1. Remove the transfer belt unit. 2. Remove the four connectors. 3. Remove the three screws from the waste toner full sensor board. Stay arm removal 1. Open the top unit, and remove the face down paper guide assembly. 2. Remove the yellow and black sub frame. 3. Remove the screw from the right stopper, and remove the stopper. 4. Remove the screw from the left stopper, and remove the stopper. 5. Remove the clip from the lock shaft. 6.
5056-XXX Sub-frame removal Important: Read the entire procedure before removal. 1. Open the top unit, and remove the RIP cover, RIP board, RIP box, electronic box, printer controller, printer controller bracket, and HVPS board. 2. Remove the cable ties. 3. Remove the 12 screws from the sub frame. 4. Remove sub frame.
5056-XXX Sub frame F1, sub frame F2 removal 1. Open the top unit. 2. Remove the two screws from the sub frames F1 and F2. Note: Spread a paper or cloth over the belt to protect the belt. Set the sub frame F to the position of the following colors, depending on the presence of the upper detection buttons.
5056-XXX Top unit removal 1. Open the top unit, and remove the top cover and face-down guide assembly. 2. Remove the screws, and remove the top unit. Transfer belt removal Transfer belt removal has been simplified with a redesign of the changing shaft linkage to the belt up / down clutch. The supplies menu no longer needs to accessed to remove the transfer belt unit. Note: If the operator panel is inoperable, or if you have an unrecoverable error code, this procedure can still be used. 1.
5056-XXX 3. Loosen the thumbscrews as shown. 4. Lift and remove the transfer belt cover.
5056-XXX 5. Loosen the thumbscrews as shown. 6. Press down on the transfer belt release lever as shown.
5056-XXX 7. Pull the transfer belt out. 8. After replacing the transfer belt and removing the four shipping spacers, tighten the transfer belt thumbscrews, and reinstall the transfer belt cover. 9. Close the top unit, rotate the locking lever to the right, and close the front cover. 10. Turn the printer on. 11. Adjust the registration, if needed, by pressing the Menu key, scrolling to Settings, scrolling to Utilities, and selecting Alignment Info. From here, you can adjust the settings for the belt.
5056-XXX Turn guide cover sensor removal 1. 2. 3. 4. Remove the left rear, rear, and right covers. Remove the print controller card and the HVPS. Disconnect the sensor cable from CN10 on the CK1 daughter card board. Remove two screws from the turn guide sensor assembly, and remove the sensor. Upper fan removal 1. Open the top unit, and remove the toner cartridges and photodeveloper drum units, top cover, and facedown guide assembly. 2.
5056-XXX 3. Remove the two screws from the left fan, and remove the fan. 4. Remove the two screws from the right fan, and remove the fan.
56-XXX Expansion feeder removals Turn guide door removal 1. Open the turn guide door. 2. Pull the door hinge from the right turn guide bushing. 3. Pull the turn guide door clear of the expansion feeder. Expansion feeder controller board removal 1. Remove six screws from the expansion feeder rear cover. 2. Unplug all cables from the expansion feeder controller board. 3. Remove six screws from the controller card. 4. Remove the controller board.
5056-XXX Stepper motor removal 1. Remove the expansion feeder rear cover. 2. Disconnect the stepper motor power cable from the expansion feeder controller board. 3. Remove three screws from the stepper motor assembly (A). A 4. Remove the stepper motor assembly from the expansion feeder.
5056-XXX Paper feed assembly removal 1. 2. 3. 4. 5. 6. 7. Remove the rear cover. Remove the cassette. Remove the stepper motor assembly. Disconnect the cables from connectors CN11, CN13, CN18 on the expansion feeder controller board. Remove the screws (A) holding the paper feed gear assembly. Remove the gear assembly (B) and the paper feed clutch (C). Remove three gears from the paper feed unit. E 8. 9. 10. 11. 12. D Remove the three cassette guide screws (D).
5056-XXX Paper tray lift motor removal 1. 2. 3. 4. Remove the rear cover. Remove the cassette. Disconnect the cable from the paper tray lift motor. Remove three black screws from the paper tray lift motor (A). A 5. Remove the paper tray lift motor. Expansion feeder turn guide door sensor assembly removal 1. 2. 3. 4. 5. Remove the rear cover. Disconnect the cable from CN15 on the controller board. Open the turn guide door. Remove two black screws from the door sensor.
5056-XXX Duplex removals Duplex unit separation removal 1. Remove the thumbscrews, C-clips, and screws as shown from both sides. 2. Remove the connectors, and separate the duplex frame from the duplex unit.
5056-XXX Duplex unit removal 1. Remove the four screws from the interface board, and remove the board. 2. Remove the two screws from the duplex connector, and remove the connector. Duplex timing belt removal 1. Remove the three C-clips from the three timing gears, and remove the timing belts. 2. Remove the knob screw, and remove the timing belt.
5056-XXX Duplex pressure roller and solenoid removal Remove the two screws securing the pressure roller solenoid assembly. Duplex feed roller and solenoid removal 1. Remove the two screws securing the feed roll solenoid assembly. 2. Remove the pressure roller and springs. 3. Remove the feed roller and springs.
5056-XXX Duplex side fence motor assembly/side fence removal 1. Remove the three screws, and remove the side fence motor assembly. 2. Remove the front and rear side fences. Note: When installing, spread the front and rear side fences to the sides, and install.
5056-XXX Duplex paper carrying motor removal 1. Remove the gear cover. 2. Remove the screws from the duplex paper carrying motor, and remove the motor.
5056-XXX High-capacity feeder (HCF) removals HCF covers removal 1. 2. 3. 4. 5. 6. Remove Remove Remove Remove Remove Remove 4-58 Service Manual the two screws from the drive cover, and remove the cover. the front cover. the two screws from the right cover, and remove the cover. the top cover. the rear cover. the four screws from the transfer cover, and remove the cover.
5056-XXX HCF call roller, paper feed roller, reverse roller removal 1. Open the top cover on the tray. 2. Remove the two screws from the transfer cover, and remove the cover. 3. Remove the retaining rings on the rollers, and remove the rollers. HCF pickup solenoid removal 1. 2. 3. 4. Remove Remove Remove Remove the four screws from the transfer cover, and remove the cover. the two screws from the drive cover, and remove the cover. the screw from the clamp plate, and remove the plate.
5056-XXX HCF paper end sensor removal HCF paper size sensors (1, 2) removal 1. Cover the paper level sensor with your hand, and press the down button. The tray moves down. Lower the 2. 3. 4. 5. 6. 7. tray until the down sensor turns on. Remove the front cover and transfer cover. Remove the two screws on the front and rear sides of the side fence. Mark the locking position of the side fence locking stay. Remove the two screws on the side fence locking stay.
5056-XXX 8. Remove the top cover switches. White Blue Top Cover Switch 1 Blue Green Black Yellow Top Cover Switch 2 HCF tray motor removal 1. Remove the rear cover and the drive cover. 2. Remove the two screws of the tray motor, and remove the motor.
5056-XXX HCF paper level sensor removal 1. Remove the four screws from the transfer cover, and remove the cover. 2. Remove the two screws from the sensor, and remove the cover. 3. Remove the connector and screw from paper level sensor, and remove the sensor. HCF power supply removal 1. 2. 3. 4. 5. 6. Move the paper tray upward. Disconnect the power cord. Remove the front cover. Remove the two screws from the power supply cover, and remove the cover.
5056-XXX Finisher removals Note: Check finisher alignment when moving or servicing the finisher. After moving or servicing the finisher, print some test pages to the finisher to ensure the vertical and horizontal alignment is correct. If the finisher is not properly aligned, refer to “Aligning the finisher and printer” on page 3-59 for alignment instructions. External covers removals 1. Remove the finisher trays. 2. Remove the two screws from the front cover, and remove the cover. 3.
5056-XXX 4. Remove the two screws from the top cover, and remove the cover. Finisher control board removal 1. Remove the external covers. 2. Disconnect all of the associated connectors. 3. Remove the four finisher control board mounting screws, and remove the board.
5056-XXX Elevator motor removal 1. Disconnect the elevator motor connector. 2. Remove the two elevator motor bracket screws from the bracket. 3. Remove the elevator motor assembly. Feed motor assembly removal 1. Remove the finisher control board mounting bracket. 2. Loosen the tension bracket mounting screw. 3. Disconnect the feed motor connector. 4. Remove the three screws and connector from the feed motor mounting bracket, and remove the feed motor assembly. 5. Remove the feed motor pulley.
5056-XXX Hole punch removal 1. 2. 3. 4. Remove Remove Remove Remove the external covers. the hole punch unit cables. the tension spring. the screw and E-ring from the tension bracket, and remove the bracket. Note: When installing the tension bracket, use the left side screw hole for the three hole punch unit and the right side screw hole for the four hole punch unit. 5. Remove the two hole punch unit screws, and remove the unit.
5056-XXX Inverter paper exit discharge brush removal 1. 2. 3. 4. Remove Remove Remove Remove the external covers. the finisher control board. the upper left panel. the two discharge brush screws, and remove the brush. Inverter paper exit roller removal 1. Remove the front and rear external covers. 2. Remove the four lower left panel screws, and remove the panel. 3. Disconnect the harness connect from the lower left panel. 4. Remove the inverter paper exit roller bushing.
5056-XXX 5. Remove the inverter idle gear. 6. Remove the inverter drive gear and bushing. 7. Remove the inverter paper exit roller. Jogging unit removal 1. Remove the dust box. 2. Remove the two screws, and remove the cover. 3. Disconnect the jogging motor connector. 4. Disconnect the jogging home position sensor connector. 5. Remove the jogging unit.
5056-XXX Path select gate removal 1. 2. 3. 4. 5. 6. Remove Remove Remove Remove Remove Remove the external covers. the two screws from the top cover, and remove the cover. the gate solenoid with mounting bracket. the straight paper exit sensor connector. the upper guide plate for the straight paper exit. the two screws and two springs for the upper guide plate. 7. Remove the path select gate. Note: Adjust the solenoid bracket mounting position so that the gate arm is contacting the solenoid.
5056-XXX Patting roller removal 1. Remove the front and rear covers. 2. Remove the finisher control board mounting bracket. 3. Remove the two screws from the upper left panel, and remove the panel. 3 4. Disconnect the sensor connector. 5. Remove the sensor harness from the harness clamp. 6. Remove the four upper guide plate screws from the inverter paper exit, and remove the plate. 7. Remove the four screws from the inverter guide plate, and remove the plate.
5056-XXX 8. Remove the tension springs. Use the upper hole when installing the spring. 9. Remove the gear and bushing. 10. Remove the patting roller.
5056-XXX Power supply removal 1. 2. 3. 4. 5. Unplug the power cord from the printer. Remove the external covers. Remove the lower left panel. Remove the cable connector for the left panel. Remove the four lower guide support plate screws, and remove the plate. 6. Remove the two power supply screws. 7. Remove the screw from the ground wire. 8. Disconnect the power supply connector, and remove the power supply.
5056-XXX Registration roller removal 1. 2. 3. 4. Remove Remove Remove Remove the hole punch unit. the registration roller clutch. the registration roller bushing. the registration roller. Registration roller clutch removal 1. Remove the harness from the clamp. 2. Remove the three control board mounting bracket screws, and remove the bracket. 3. Remove the registration roller clutch set screw. 4. Remove the registration roller clutch connector. 5. Remove the registration roller clutch.
5056-XXX Stack area discharge brush removal 1. Remove the dust box. 2. Remove the stack area discharge brushes. Staple unit removal 1. Remove the staple unit connector. 2. Pull outward on the staple cover, and remove the staple unit.
5056-XXX Straight paper exit discharge brush removal 1. 2. 3. 4. Remove Remove Remove Remove the external covers. the two screws from the top cover, and remove the cover. the two lever screws, and remove the lever. the two discharge brush screws, and remove the brush. Straight paper exit roller removal 1. 2. 3. 4. Remove Remove Remove Remove the external covers. the finisher control board. the upper left panel. the front straight paper exit roller bushing. 5. Remove the belt and pulley.
5056-XXX 6. Remove the rear straight paper exit roller E-ring and bushing. 7. Remove the straight paper exit roller.
5056-XXX Timing belts 1 and 2 removal 1. Remove the finisher control board mounting bracket. 2. Remove the feed motor mounting bracket. 3. Remove the tension bracket mounting screw. 4. Remove the tension spring. 5. Remove the timing belt 1. 6. Loosen the tension bracket mounting screw for timing belt 2. 7. Remove the timing belt 2.
5056-XXX Tractor belt removal 1. 2. 3. 4. 5. Remove Remove Remove Remove Remove the external covers. the lower left panel. the cable connector of the left panel. the belt motor unit. the four lower guide support plate screws for the invert paper exit. 6. Remove the tension spring from the shaft. 7. Remove the paper jam removal knob.
5056-XXX 8. Remove the tractor belts. Note: Install the belt so that the belt tooth just under the plastic hook aligns with the hook on the other belt. Tractor drive motor assembly removal 1. Remove the outer covers. 2. Remove the drive belt. 3. Remove the three screws, and disconnect the connector from the tractor drive motor assembly. 4. Remove the tractor drive motor assembly.
