Lexmark 13P0150 - C 750dtn Color Laser Printer Service Manual
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Lexmark 13P0150 - C 750dtn Color Laser Printer Service Manual

Lexmark 13P0150 - C 750dtn Color Laser Printer Service Manual

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Download this manual See also: Service Manual, Setup Manual
Edition: April 13, 2006
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. Some states do not allow disclaimer of express or
implied warranties in certain transactions; therefore, this statement may not apply to you.
This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the
information herein; these changes will be incorporated in later editions. Improvements or changes in the products or the
programs described may be made at any time.
Comments may be addressed to Lexmark International, Inc., Department D22A/032-2, 740 West New Circle Road,
Lexington, Kentucky 40550, U.S.A or e-mail at ServiceInfoAndTraining@Lexmark.com. Lexmark may use or distribute any
of the information you supply in any way it believes appropriate without incurring any obligation to you.
Lexmark, Lexmark with diamond design, and MarkNet are trademarks of Lexmark International, Inc., registered in the
United States and/or other countries.
ImageQuick, Optra Forms, and PrintCryption are trademarks of Lexmark International, Inc.
LEXFAX is a service mark of Lexmark International, Inc.
PostScript® is a registered trademark of Adobe Systems Incorporated.
PCL® is a registered trademark of the Hewlett-Packard Company.
Other trademarks are the property of their respective owners.
© 2006 Copyright Lexmark International, Inc.
All rights reserved.
UNITED STATES GOVERNMENT RIGHTS
This software and any accompanying documentation provided under this agreement are commercial computer software and
documentation developed exclusively at private expense.
U.S.A. P/N 12G9174
Lexmark Repair Catalog
The following information is from Lexmark's Service Mnaual.
Revised: April 13, 2006
Lexmark™ C750
Lexmark and Lexmark with diamond design are
trademarks of Lexmark International, Inc., registered
in the United States and/or other countries.
5060-00x

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Summary of Contents for Lexmark 13P0150 - C 750dtn Color Laser Printer

  • Page 1 Lexington, Kentucky 40550, U.S.A or e-mail at ServiceInfoAndTraining@Lexmark.com. Lexmark may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you. Lexmark, Lexmark with diamond design, and MarkNet are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.

  • Page 2: Repair Information

    5060-00x Repair information Warning: Read the following before handling electronic parts. 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: •...
  • Page 3 5060-00x Screw identification table The following table contains screw types, locations, and quantities necessary to service the printer. Pay careful attention to each screw type location when doing removals. You must install the correct screw type in each location during reassembly. Reference Screw type Location...
  • Page 4 5060-00x Reference Screw type Location Purpose number M2.9x6mm Front access door assembly Mounting Plastite Door handle to cover Mounting Detent housing to cover Mounting ITU switch housing to light shield Attach Duplex baffle to lower right door Attach Front and rear latches to lower right door Mounting Bias latch cover to door Attach...
  • Page 5 5060-00x Reference Screw type Location Purpose number M3.5 x 1.35mm ITU drive asm to lower frame Mounting (continued) Plastite 8 long Fuser drive asm to lower frame Mounting (continued) Vacuum top duct to lower frame Mounting Toner shield to lower frame Attach Upper deflector to lower frame (PF XPORT) Mounting...

  • Page 6: Removal Procedures

    5060-00x Removal procedures CAUTION: Remove the power cord from the printer or electrical outlet before you connect or disconnect any cable or electronic board or assembly for personal safety and to prevent damage to the printer. Disconnect any connections between the printer and PCs/peripherals. The printer weighs 47.7 kg (105 lb) and requires at least two people to lift it safely.

  • Page 7: Mounting

    5060-00x Remove the operator panel bezel. Remove the top cover mounting screws (D) from the front of the printer. Remove the three top cover screws (E) type “323” on page 4-3 from the rear and the screw (F) from the left side of the printer.
  • Page 8 5060-00x Remove the flag retainer (G) from the top cover. Under the top cover, unclip the bin full sensor (H). Tilt the sensor and lower it through the top cover. Remove the upper option autoconnect (I). Remove the top cover. Repair information...

  • Page 9: Rear Fan Cover Removal

    5060-00x Rear fan cover removal See “Rear fan cover” on page 7-5 for the part number. Remove the rear cover. See “Rear cover removal” on page 4-8. Remove the rear fan cover screw type “323” (A) and remove the rear fan cover. Rear cover removal See “Rear cover”...

  • Page 10: Front Right Handle Cover Assembly Removal

    5060-00x Front right handle cover assembly removal “Front right handle cover assembly” on page 7-3 for the part number. Open the front cover. Remove the light shield screw type “324” (A) and screw type “323” (B) and release tab (C) from the frame slot.

  • Page 11: Front Cover Assembly Removal

    5060-00x Front left handle cover assembly removal “Front left handle cover assembly” on page 7-3 for the part number. Open the front cover. Remove the front left handle cover assembly screw type “323” (A) and remove the assembly. A A (323) Front cover assembly removal “Front cover assembly”...
  • Page 12 5060-00x Remove the bezel (B). Hold the front cover and remove the two screws type “102” (C) from the upper front pivot cover. C(102) Remove the front cover assembly. 4-11 Repair information...

  • Page 13: Lower Right Door Assembly Removal

    5060-00x Lower right door assembly removal “Lower right door assembly” on page 7-3 for the part number. Open the lower right door assembly. Remove the front right handle cover assembly. See “Front right handle cover assembly removal” on page 4-9. Remove the screw (A) on the lower right front cover.

  • Page 14: Left Lower Cover Removal

    5060-00x Loosen the two screws (C). Remove the lower right door assembly. Left lower cover removal Remove the lower jam access door assembly. See “Lower jam access door assembly removal” on page 4-14. Remove the left lower cover screw type “323”...

  • Page 15: Lower Jam Access Door Assembly Removal

    5060-00x Lower jam access door assembly removal “Cover, left lower” on page 7-5 for the part number. Remove the front left handle cover assembly. See “Front left handle cover assembly removal” on page 4-10. Remove the lower jam access door assembly screw type “323”...

  • Page 16: Paper Path Access Door Cover Removal

    5060-00x Paper path access door cover removal “Paper path access door” on page 7-3 for part number. Remove the paper tray. Remove the front left handle cover assembly. See “Front left handle cover assembly removal” on page 4-10. Open the paper path access door, carefully remove screw (A) type “323”...

  • Page 17: Front Lower Left Cover Removal

    5060-00x Front lower left cover removal “Front lower left cover” on page 7-3 for part number. Remove the paper tray. Remove the front left handle cover assembly. See “Front left handle cover assembly removal” on page 4-10. Open the paper path access door, carefully remove screw (A) type “323”...

  • Page 18: Autocompensator Pick Assembly Removal

    5060-00x Autocompensator pick assembly removal Remove all cartridges. Remove the ITU. See “ITU assembly removal” on page 4-37. Remove tray 1. Remove the second transfer roll. See “Second transfer roll removal” on page 4-79. Remove the transfer plate. Lifting and rotating the right edge of the plate up to a 45° angle will release the transfer plate.
  • Page 19 5060-00x Remove the five screws “323” (C) and remove the lower left cover and the jam access door. Warning: Be careful not to lose the access door spring. C(323) Remove the pin (D) that holds in the MPF swing arm assembly. 4-18 Service Manual...
  • Page 20 5060-00x Remove the MPF swing arm assembly (E). 4-19 Repair information...

  • Page 21: Left Side View

    5060-00x Remove paper level sensor. There are two screws located under the back VTB belt. Remove both of them along with a third that is located at the rear pivot point for the transfer plate (F). This allows the paper level assembly to drop into the cavity that the tray is inserted into.
  • Page 22 5060-00x Disconnect the pick motor and the transparency sensor connectors (G). Remove four screws (H) holding the pick assembly in place. DO NOT REMOVE THIS SCREW 4-21 Repair information...
  • Page 23 5060-00x Push the bellcrank (I) in to allow the pick arm to fall to the bottom of the tray. Disconnect the spring clip (J) from the pick arm. Be sure not to let the spring come off of the lower frame. Also identify which pegs the spring clip is sitting on.

  • Page 24: Bor Drive Assembly Removal

    5060-00x BOR drive assembly removal “BOR housing assembly with motor” on page 7-30 for the part number. Open the front cover. Remove the yellow toner cartridge. Remove the front right light shield cover. Remove the BOR housing assembly screw type “323”...
  • Page 25 5060-00x Disconnect the signature button cable (A) from the developer HVPS board for the cartridge contact assembly you are removing. Remove the three mounting screws from the cartridge rail screws in the front (B) and one from the rear (C) and remove the rail of the selected cartridge assembly (yellow shown).
  • Page 26 5060-00x Remove the two upper screws (D) that mount each cartridge drive motor and the cartridge contact assembly to the upper frame for the cartridge contact assembly you want to remove. D (Yellow) D (Cyan) D (Magenta) D (Black) Press the three cartridge contact assembly retaining tabs (E) and remove the assembly. 4-25 Repair information...

  • Page 27: Cartridge Drive Assembly Removal

    5060-00x Cartridge drive assembly removal “Cartridge drive assembly, cyan/magenta/black” for the part number. Remove the RIP board shield assembly. See “RIP board shield assembly removal” on page 4-71. Remove the engine board. See “Engine board removal” on page 4-29. Remove the three cartridge drive assembly mounting screws (A) for the cartridge drive assembly you want to remove.

  • Page 28: Cartridge Rail Assembly

    5060-00x Cartridge rail assembly Open the front cover. Remove the toner cartridges. Remove the ITU assembly. See “ITU assembly removal” on page 4-37. Set aside the top cover assembly. It is not necessary to totally remove it. See “Top cover assembly removal”...

  • Page 29: Attach

    5060-00x Developer HVPS board removal “Developer HVPS board” on page 7-38 for the part number. Remove the RIP board shield assembly. See “RIP board shield assembly removal” on page 4-71. Remove the four screws type “323” (A) and four screws type “121”...

  • Page 30: Engine Board Removal

    5060-00x Engine board removal “Engine board” on page 7-39 for the part number. Remove the rear fan cover. See “Rear fan cover removal” on page 4-8. Remove the rear cover. See “Rear cover removal” on page 4-8. Disconnect all cables from the engine board. Remove the screw “323”...

  • Page 31: Engine Board Shield Removal

    5060-00x Engine board shield removal “Engine board shield” on page 7-39 for the part number. Remove the RIP board shield assembly. See “RIP board shield assembly removal” on page 4-71. Remove the engine board. See “Engine board removal” on page 4-29.

  • Page 32: Fuser Assembly Removal

    5060-00x Fuser assembly removal CAUTION: Be sure the fuser assembly has cooled before you remove it. “Fuser assembly 115V 500W” on page 7-9 “Fuser assembly 220V 500W” on page 7-9 for the part numbers. Open the lower right door assembly. Unlatch the two fuser latches (A).

  • Page 33: Fuser Bottom Duct Removal

    5060-00x Fuser bottom duct removal “Fuser bottom duct” on page 7-5 for the part number. Remove “Fuser assembly removal” on page 4-31. Remove “Fuser top duct removal” on page 4-34. Remove the redrive belt cover duct (A). Remove fuser left duct (B). Remove fuser bottom duct.

  • Page 34: Fuser Drive Assembly Removal

    5060-00x Fuser drive assembly removal “Fuser drive assembly w/motor” on page 7-12 for the part number. Remove “Fuser bottom duct removal” on page 4-32. Swing lever (A) and disengage VTB shaft. Remove the fuser drive assembly screws (A) type “323” on page 4-3 and remove the assembly.

  • Page 35: Fuser Fan Removal

    5060-00x Fuser fan removal “Fuser fan” on page 7-41 for the part number. Remove the rear fan cover. See “Rear fan cover removal” on page 4-8. Disconnect the fuser fan cable from connector J2 (B) on the engine board. Remove the fuser fan screws (A), part number 12G6529 and remove the fan. Fuser top duct removal “Fuser top duct”...

  • Page 36: Fuser Web Oiler Motor Assembly Removal

    5060-00x Fuser web oiler motor assembly removal “Fuser assembly, web oiler 115V 500W” on page 7-11 “Fuser assembly, web oiler 220V 500W” on page 7-11 for the part number. Remove the fuser top duct. See “Fuser top duct removal” on page 4-34.

  • Page 37: Installation Notes

    5060-00x Installation notes Note: When you reinstall the web oiler motor assembly, pull the excess cable, twist, install a cable tie, and route the cable down into the printer. Note: Make sure the motor cable (A) is routed away from gears (B). 4-36 Service Manual...

  • Page 38: Itu Assembly Removal

    5060-00x ITU assembly removal “ITU assembly” on page 7-25 for the part number. Open the front cover. Remove the toner cartridges. Open the MPF. Raise the ITU release lever (A) and slide the ITU from the printer. ITU drive assembly removal “ITU motor drive assembly with SKC motor”...
  • Page 39 5060-00x ITU drive motor removal “ITU drive motor, SKC” on page 7-27 for the part number. Remove the RIP board shield assembly. See “RIP board shield assembly removal” on page 4-71. Remove the engine board shield. See “Engine board shield removal” on page 4-30.
  • Page 40 5060-00x Remove the right rear cover screw type “121” (A). Open the redrive cover and remove the screw type “121” (A) from the top of the LVPS and remove the LVPS from the printer. Note: Be sure to reinstall the ground strap when you replace the LVPS. 4-39 Repair information...
  • Page 41 5060-00x Multipurpose feeder (MPF) removal “Multipurpose Feeder (MPF)” on page 7-21 for the part number. Open the MPF to the lowest position. Remove the MPF cable cover screw (A). Place flatblade screwdriver in the slot (B) on the MPF cable cover and gently pry open the cover. 4-40 Service Manual...
  • Page 42 5060-00x Disconnect the MPF switch cable from the MPF sensor (C). Pull the MPF cable free of the enclosure and out from under the cable retainer (D). Remove the MPF strap screw (E) type “412” on page 4-4. 4-41 Repair information...
  • Page 43 5060-00x Release the MPF latch (F) and remove the MPF. Nip relief handle removal “Nip relief handle” on page 7-19 for the part number. Remove lower left side covers to gain access to the nip relief handle. Remove waste toner container. Reinsert paper tray into printer.
  • Page 44 5060-00x Some scarring of the post is expected, but be careful not to damage the post. Remove any remnants of the handle. Check the paper tray to check for debris. For example, see the fragment (B) in the following picture. 4-43 Repair information...
  • Page 45 5060-00x Installation notes: Rotate the new nip relief handle into place to connect it to the nip relief link (A). Using a screwdriver, gently pry the nip relief lever (B) towards the rear of the machine and insert lower portion of handle so that it is trapped between the lever and the reference edge plate (C). Holding the nip relief handle in place, use a flathead screwdriver to gently pry up on the top portion of the lever allowing the handle to press into place onto the post using moderate force.
  • Page 46 5060-00x Once the handle snaps onto the post, press the upper portion of the handle to the right and rotate the handle into its home position. This seats the nip relief lever into the correct position. Check for proper operation. Install the waste toner container.

  • Page 47: Operator Panel Removal

    5060-00x Operator panel removal “Operator panel assembly, low volt” on page 7-3 “Operator panel assembly, high volt” on page 7-3 for the part number. Remove the operator panel bezel. Unlatch the operator panel latches (A). 4-46 Service Manual...

  • Page 48: Outer Emc Shield Removal

    5060-00x Disconnect the operator panel cable from the operator panel and remove the operator panel. Outer EMC shield removal Loosen screw type “232” (A) and lift the outer EMC shield from the printer. 4-47 Repair information...

  • Page 49: Paper Size Sensing Assembly Removal

    5060-00x Paper size sensing assembly removal “Paper size sensing assembly” on page 7-57 for the part number. Note: The paper size sensing assembly contains components that easily fall apart as you remove the assembly. Be careful not to lose any of the components. Remove the rear cover.
  • Page 50 5060-00x Rear roll Reach around and depress the latch (A) on the side of the shaft and remove the tire. Installation notes: • Replace both rollers at the same time. • When you replace the front roller, make sure the roller is pressed against the shaft and the screw is fastened all the way down.

  • Page 51: Printhead Removal And Adjustment

    5060-00x Printhead removal and adjustment See “Printhead assembly” on page 15 for the part numbers. Warnings: • Do not loosen or replace more than one printhead at a time to retain factory settings. • Whenever a printhead is replaced, you must to perform the “Printhead mechanical alignment”...
  • Page 52 5060-00x Printhead mechanical alignment Identify the configuration of your printer. The following steps are similar for both versions, except you need to remove two extra screws when you have the PSD bracket. You may have a PSD bracket (A), whether or not the PSD or thermistor is connected. You may not have a bracket.
  • Page 53 5060-00x Insert the first printhead alignment tool. If you have a PSD bracket, remove the two screws (A and B). Note: Use a small diameter Phillips screwdriver to remove screw (A). Insert the printhead alignment tool, placing the locating pin (C) in the middle hole (A). Secure the alignment tool bracket (D) with screw provided or a screw removed from the previous step.
  • Page 54 5060-00x Install the second printhead alignment tool in the front of the printhead and secure alignment tool bracket (D) with screw provided. Align the locating pin (C) in the hole in printer frame. Turn the thumbwheel (E) until the end of the thumbwheel just touches the printhead mounting arm for both the front and rear alignment assemblies.
  • Page 55 5060-00x Remove the old printhead and install a new printhead assembly. Do not tighten the printhead screws yet. Note: Make sure the right rear screw goes through the printhead spacer located at the right rear of the printer frame. Bias the new printhead assembly against the front and rear stops. Tighten the right rear printhead mounting screw.
  • Page 56 5060-00x Securely close the front cover or reattach if previously removed. If replacing the black printhead, go to step 12. Otherwise, enter Diagnostics Mode: Turn the printer off. Press and hold Go and Return. Turn the printer on. Release the buttons when Performing Self Test displays. Select Alignment Menu, select the color of the printhead that was replaced, and set the Z value to zero.
  • Page 57 5060-00x Loosen the printhead screws before making any adjustments to the thumbwheel. Turn each thumbwheel the appropriate number of clicks as indicated by the test page. For example, if the test page indicates a +10 as the misalignment, turn the thumbwheel 10 clicks in the positive direction indicated on the test page.
  • Page 58 5060-00x Examine the registration marks on the top, bottom, left, and right sides on the page. Adjust the margin settings so that the Registration lines are on the edge of the page. Repeat for each margin. • Adjust the top margin before bottom margin, and the right margin before the left. Value Description Value change effect:...
  • Page 59 5060-00x Electronic color alignment Note: Use of a loupe or magnifying glass (4x or higher) may make observation of the alignment targets easier. Press Menu until Alignment displays and press Select. Select Alignment Test from the Alignment menu. Three sheets print for cyan, magenta, and yellow. Each is compared to black alignment. For example, one of the sheets shows cyan printed over a black target.
  • Page 60 5060-00x Press Go to print the Cyan Alignment Page. Use the top row to determine adjustments. “Printhead alignment test page—cyan (three of three)” on appendix page B-11 for a color sample of the entire page. Use the leftmost target in the first row to adjust the cyan and black horizontal lines in the target (T value or Top).
  • Page 61 5060-00x To adjust R or Right value press Go to print the Cyan Alignment Page. Use the rightmost target in the first row to adjust the cyan and black vertical lines. Adjust the setting and press Go to print the page and verify the setting, until the lines are even. Press Select to save the value.
  • Page 62 5060-00x Print line length calibration Press Return until you reach the main Diagnostic Menu (the top line is blank and bottom line displays Alignment). Press Menu until Print Tests is displayed and press Select. Select Print Line Length Calibration. There are six alignment groups, A through F. “Print Line Len page”...

  • Page 63: Printhead Thermistor Card Removal

    5060-00x Select the appropriate color. Change value of the respective setting by the calculated value. For example, if T= -5 and dT= 2, the new T value is (T+dT= -5 + 2) -3. Once all values are changed, return to the Print Tests menu and select Print Line Length Calibration. Verify that the adjusted values and the color bands for cyan, magenta, and yellow on all six groups, A through F, are centered between -2 and +2.

  • Page 64: Psd Sensor Assembly Removal

    5060-00x Installation notes • If a PSD exists, install the new printhead thermistor card. Leave the old PSD sensor assembly in place. • Disconnect the cable from the PSD card and connect it to the printhead thermistor card. Note: Whether replacing a printhead thermistor or an existing PSD sensor assembly, check the Registration and Color Alignment.
  • Page 65 5060-00x Rear bellcrank removal (cyan, magenta, yellow) See the assembly, “ITU loading” on page 7-29, for the part number. Power off the printer. Remove the four toner cartridges and leave the front door open. Remove the ITU assembly. See “ITU assembly removal” on page 4-37.
  • Page 66 5060-00x Rotate the contact end of the bellcrank down (B) and remove. Be careful not to lose the contact spring (C). Installation note Replace the bellcranks by reversing the order of removal. Note: Test the color coverage by running the Print Quality Pages in the Diagnostics or Configuration Menu. 4-65 Repair information...
  • Page 67 5060-00x Rear bellcrank removal (black) See the assembly, “ITU loading” on page 7-29, for the part number. Power off the printer. Remove the four toner cartridges and leave the front door open. Remove “ITU assembly removal” on page 4-37. Check each of the rear bellcranks for cracks or breakage. Remove the spring.
  • Page 68 5060-00x Rotate the contact end of the bellcrank down (C) and remove. Be careful not to lose the spring (D). Installation note Replace the bellcranks by using reverse order of removal. Note: Test the color coverage by running the Print Quality Pages in the Diagnostics or Configuration Menu. 4-67 Repair information...

  • Page 69: Redrive Assembly Removal

    5060-00x Redrive assembly removal “Redrive assembly” on page 7-16 for the part number. Open the redrive door. Remove the redrive assembly screw type “323” (A). Remove the drive belt (B) from the lower redrive pulley. Remove the redrive assembly. Note: When you reinstall the redrive assembly be sure to align the notch in the redrive assembly with tab (A). 4-68 Service Manual...

  • Page 70: Registration Motor Removal

    5060-00x Registration motor removal “Registration motor” on page 7-19 for the part number. Remove the rear cover. See “Rear cover removal” on page 4-8. Remove the transfer HVPS. See “Transfer HVPS board removal” on page 4-80. Remove the registration motor mounting screws (B), cut the cable tie (A), and remove the assembly. 4-69 Repair information...

  • Page 71: Rip Board Removal

    5060-00x RIP board removal “RIP board assembly - network, model 5060-002” on page 7-37 “RIP board assembly, non- network, Model 5060-001” on page 7-37 for the part number. Warning: Improper RIP board replacement can result in incorrect printer function and significant additional service time due to loss of data.

  • Page 72: Rip Fan Removal

    5060-00x RIP fan removal “RIP fan” on page 7-41 for the part number. Remove the top cover assembly. See “Top cover assembly removal” on page 4-5. Remove the rip fan screw type “324” (A). Disconnect the rip fan cable from the engine board at connector J53. Remove the rip fan.
  • Page 73 5060-00x S2/NMS/transparency sensor assembly removal The S2, narrow media sensor (NMS), and transparency sensor are bundled into a sensor cable assembly. See “S2/transparency/narrow media sensor assembly” on page 7-17 for the part number. Removing the old assembly Note: Disconnect all power from the printer before proceeding with the steps below. Open the front cover and remove the print cartridges.
  • Page 74 5060-00x Disconnect the MPF assembly door hinge restraint by removing screw (E) and remove the MPF assembly. Gently pull the sensor assembly cable (B) through the opening between the upper and lower frame and remove the sensor assembly through the rectangular opening. Clip and remove the cable tie (C).
  • Page 75 5060-00x Disconnect the three sensors (A) from the frame. Service tip: A light aimed toward the grounding clip (B) makes the removal easier. Service tip: Leave the old sensor cable assembly (C) in place temporarily after disconnecting the sensors as a guide to placement of the sensors for the new assembly. Lay the new sensor cable assembly beside the old one and connect the new sensors as you remove the old assembly.
  • Page 76 5060-00x Installing the new assembly Remove the J70 connector cable to allow space. Note the route it shares with sensor cable assembly through the frame (see openings D and E below). Place a new cable sensor assembly in the printer next to the sensor connectors (A). Route the J68 connector around the ground clip (B) and cable channel between the upper and lower frame.
  • Page 77 5060-00x Insert the cable connector into the rectangular opening and twist left and push up gently, the connector tends to follow the pathway through and out. Insert the J68 connector of the sensor cable assembly into the rectangular opening and push up. With your other hand, twist the sensor cable assembly toward the left and continue guiding the cable 4-76 Service Manual...
  • Page 78 5060-00x Continue to push until the J68 connector (A) appears in the opening. Route the MPF tray assembly sensor cable through the same openings. Connect J68 to the engine board. Connect the MPF tray assembly sensor cable to the engine board at J70. Install the new cable tie (B) on the cable bundle and trim the excess cable tie flush.
  • Page 79 5060-00x Ensure the sensor cable assembly is on the side of the grounding clip (A) closest to the fuser end of the printer. Install the new sensor assembly (B) in the lower frame. Verify the sensors flags are not sticking and are moving freely. Service tip: Use a sheet of paper between the upper and lower guides to activate the sensors.

  • Page 80: Second Transfer Roll Removal

    5060-00x Install a new cable tie in the same location as the one that was previously removed (B), if necessary. Install the MPF tray assembly and replace the screw to reconnect the MPF assembly door hinge restraint. Install the ITU and print cartridges. Reconnect power to the printer.

  • Page 81: Transfer Hvps Board Removal

    5060-00x Transfer HVPS board removal “Transfer HVPS board” on page 7-38 for the part number. Remove the rear cover. See “Rear cover removal” on page 4-8. Remove the transfer HVPS board screw type “324” “312” (A). Disconnect the five spade terminals (B) from the transformers. Disconnect the control cable (C).

  • Page 82: Transfer Plate Assembly

    5060-00x Transfer plate assembly “Transfer plate assembly” on page 7-14 for part number. Remove the “S2/NMS/transparency sensor assembly removal” on page 4-72. Remove the transfer plate. Lifting and rotating the right edge of the plate up to a 45° angle releases the transfer plate.
  • Page 83 5060-00x Vacuum transport belt (VTB) removal “Vacuum transport belt assembly” on page 7-13 for part number. Remove the transfer plate assembly. See “Transfer plate assembly” on page 4-81. Remove the fuser bottom duct. See “Fuser bottom duct removal” on page 4-32.
  • Page 84 5060-00x Rotate release lever on gear until the gear can be removed. Remove screw from ground wire. Remove vacuum belt transfer belt unit far enough to release ground wire from restraint clips and remove completly. 4-83 Repair information...

  • Page 85: Waste Container Door Removal

    5060-00x Vacuum transport belt (VTB) fan removal “VTB fan” on page 7-41 for the part number. Remove the RIP board shield assembly. See “RIP board shield assembly removal” on page 4-71. Remove the VTB fan with a flatblade screwdriver. Waste container door removal “Waste container door”...

  • Page 86: Waste Container Latch Removal

    5060-00x Waste container latch removal “Waste container latch” on page 7-18 for the part number. Remove the paper size sensing assembly. See “Paper size sensing assembly removal” on page 4-48. Use a flatblade screwdriver to release the waste container latch from the paper size sensing assembly. Web oiler fuser kit installation “Fuser web oiler upgrade kit and replacements”...
  • Page 87 5060-00x Unlatch the two fuser latches (A). Remove the fuser assembly. Open the front cover. Remove the yellow print cartridge. Remove the front right light shield screws (B) and (C) and remove the light shield. B(323) C(324) 4-86 Service Manual...
  • Page 88 5060-00x Carefully remove the paper path access door cover right mounting screw (D). Tape front jam access door (E) if tape is available, to help hold the door in place. 4-87 Repair information...
  • Page 89 5060-00x Remove the front right handle cover assembly screws (F) and remove the assembly. F(323) Open paper tray (G). 4-88 Service Manual...
  • Page 90 5060-00x Remove screw (H) from the top front support bracket. Swing bracket to the right. Use the alignment pins (I) on the web oiler fuser motor assembly to position the assembly in holes (J) and install the assembly. 4-89 Repair information...
  • Page 91 5060-00x Secure the web oiler motor assembly with screws (K). Install the web oiler card using screws (L). 4-90 Service Manual...
  • Page 92 5060-00x Plug web oiler cable into web oiler card connector (M). Plug web oiler drive assembly cable into cable connector (N). Note: Make sure the cables from the drive assembly are routed along the lower frame and are not in contact with the drive assembly gears.
  • Page 93 5060-00x Align tabs on the front right light shield with the slots (O) on the frame. Move the front right light shield up until alignment stud (P) and the screw hole (Q) are aligned. 4-92 Service Manual...
  • Page 94 5060-00x Attach the new fuser web oiler fuser housing (R) to the new web oiler fuser. Insert the web oiler fuser assembly into the fuser assembly and install the fuser assembly into the printer. 4-93 Repair information...
  • Page 95 5060-00x 4-94 Service Manual...

This manual is also suitable for:

C750

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