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Canon LBP7780C Series Service Manual
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Canon LBP7780C Series Service Manual

Canon LBP7780C Series Service Manual

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LBP7780C/7750C/5480/5460 Series
Service Manual Rev.1
Product Description
Technical Reference
Disassembly and Assembly
Maintenance and Inspection
Troubleshooting
Appendix
1
2
3
4
5

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Summary of Contents for Canon LBP7780C Series

  • Page 1 LBP7780C/7750C/5480/5460 Series Service Manual Rev.1 Product Description Technical Reference Disassembly and Assembly Maintenance and Inspection Troubleshooting Appendix...
  • Page 2 Canon will release technical information as the need arises. In the event of major not be copied, reproduced or translated into another language, in whole or in part, without the changes in the contents of this manual over a long or short period, Canon will issue a new written consent of Canon Inc.
  • Page 3 Explanation of Symbols The following rules apply throughout this Service Manual: The following symbols are used throughout this Service Manual. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with reference to the timing of Symbols Explanation operation.
  • Page 4 Blank Page...
  • Page 5 Contents Paper Source Menu Options (LBP7750C/LBP5460) -----------------------------1-19 Paper Source (LBP7780C/LBP5480) ------------------------------------------------1-20 Standard Network Menu Options (LBP7750C/LBP5460) -----------------------1-20 Network (LBP7780C/LBP5480) ------------------------------------------------------1-22 Layout Menu Options (LBP7750C/LBP5460) --------------------------------------1-23 1 Product Description Layout (LBP7780C/LBP5480) ----------------------------------------------------------1-23 Quality Menu Options (LBP7750C/LBP5460) --------------------------------------1-23 Characteristics -----------------------------------------------------------------1-2 Quality (LBP7780C/LBP5480)----------------------------------------------------------1-24 System Configuration --------------------------------------------------------1-2 Interface Menu Options (LBP7750C/LBP5460) ------------------------------------1-26 System Configuration ------------------------------------------------------------- 1-2...
  • Page 6 Points to Note when Replacing/Discarding a Lithium Battery ---------1-34 Overview ----------------------------------------------------------------------------2-17 Points to Note when Performing Disassembly/Assembly---------------1-34 Various Controls -------------------------------------------------------------------2-17 Speed Control with Small Size Paper (Throughput Down Control) -----------2-17 2 Technical Reference Fixing Temperature Control -------------------------------------------------------------2-18 Pressure Roller Pressure Release Control -----------------------------------------2-19 Basic Configuration -----------------------------------------------------------2-2 Protection Function------------------------------------------------------------------------2-20 Functional Configuration --------------------------------------------------------- 2-2...
  • Page 7 DC Controller PCB ---------------------------------------------------------------2-33 Other License File Management Functions -----------------------------------------2-63 Enhanced System Application Management-------------------------------2-66 Overview -------------------------------------------------------------------------------------2-33 Motor/Fan Control -------------------------------------------------------------------------2-35 Outline ----------------------------------------------------------------------------------------2-66 Failure Detection ---------------------------------------------------------------------------2-36 About Login Service-----------------------------------------------------------------------2-66 Low-voltage Power Supply -----------------------------------------------------2-36 Default Authentication overview--------------------------------------------------------2-66 Other Log in service-----------------------------------------------------------------------2-66 Overview -------------------------------------------------------------------------------------2-36 Procedure Changing Login Services -------------------------------------------------2-66 Protection Function------------------------------------------------------------------------2-37 Procedure Installing Login Services --------------------------------------------------2-67...
  • Page 8 Glossary --------------------------------------------------------------------------------------2-79 Removing Right Rear Cover(LBP7780C/LBP5480) ---------------------3-13 Embedded RDS ------------------------------------------------------------- 2-81 Removing the Right Rear Cover -------------------------------------------------------3-13 Product Overview -----------------------------------------------------------------2-81 Removing the Control Panel Unit Right Cover ----------------------------3-14 Overview -------------------------------------------------------------------------------------2-81 Remove the Control Panel Unit Right Cover(LBP7780C/LBP5480) -3-14 Features and benefits --------------------------------------------------------------------2-81 Removing the Control Panel Unit Left Cover ------------------------------3-15 Service cautions -------------------------------------------------------------------2-81 Before Removing Control Panel Unit Left Cover ----------------------------------3-15...
  • Page 9 Removing Secondary Transfer Unit ------------------------------------------3-27 Before Removing Laser Scanner Unit ------------------------------------------------3-41 Removing Y/M Laser Scanner Unit ---------------------------------------------------3-41 Removing ITB Unit ---------------------------------------------------------------3-27 Removing C/Bk Laser Scanner Unit --------------------------------------------------3-43 Removing Fixing Assembly -----------------------------------------------------3-28 Removing Laser Scanner Unit(LBP7780C/LBP5480) -------------------3-45 Removing Waste Toner Container --------------------------------------------3-29 Before Removing Laser Scanner Unit ------------------------------------------------3-45 Remove the Waste Toner Container(LBP7780C/LBP5480) -----------3-29 Removing Y/M Laser Scanner Unit ---------------------------------------------------3-45...
  • Page 10 Before Removing the Duplex Drive Unit ---------------------------------------------3-68 Removing the Developing Disengagement Motor ------------------------3-85 Removing the Duplex Drive Unit -------------------------------------------------------3-69 Before Removing the Developing Disengagement Motor -----------------------3-85 Removing the Duplex Drive Unit(LBP7780C/LBP5480) ----------------3-69 Removing the Developing Disengagement Motor ---------------------------------3-85 Before Removing the Duplex Drive Unit ---------------------------------------------3-69 Removing the Developing Disengagement Motor(LBP7780C/LBP5480) Removing the Duplex Drive Unit -------------------------------------------------------3-70 3-86...
  • Page 11 Removing the Delivery Fan ----------------------------------------------------3-93 Before Removing the Low Voltage Power Unit ---------------------------------- 3-109 Removing the Low Voltage Power Unit -------------------------------------------- 3-109 Before Removing the Delivery Fan----------------------------------------------------3-93 Removing the Low Voltage Power Unit(LBP7780C/LBP5480) -------3-111 Removing the Delivery Fan -------------------------------------------------------------3-93 Removing the Delivery Fan(LBP7780C/LBP5480) -----------------------3-94 Before Removing the Low Voltage Power Unit ---------------------------------- 3-111 Removing the Low Voltage Power Unit -------------------------------------------- 3-111 Before Removing the Delivery Fan----------------------------------------------------3-94...
  • Page 12 Consumable Parts Replaced by Service Engineers ---------------------- 4-2 Checking the Pressure Volume (Nip Volume) of the Pressure Roller --------5-10 Adjustment of Electrical Parts ------------------------------------------------- 5-11 Periodical Service -------------------------------------------------------------4-2 When Replacing the DC Controller PCB -------------------------------------------- 5-11 Periodical Service ------------------------------------------------------------------ 4-2 Replacing the Main Controller PCB --------------------------------------------------- 5-11 Cleaning -------------------------------------------------------------------------4-3 Outline of Electrical Components --------------------------------------- 5-15...
  • Page 13 F/W UPDATE GR. -------------------------------------------------------------------------5-40 System Management Operations------------------------------------------------------5-65 NETWORK GR. ----------------------------------------------------------------------------5-41 Maintenance --------------------------------------------------------------------------------5-68 SP.ADMIN.MODE -------------------------------------------------------------------------5-42 FAQ -------------------------------------------------------------------------------------------5-69 Service Mode List(LBP7780C/LBP5480) -----------------------------------5-42 Error Messages ----------------------------------------------------------------------------5-72 Error Codes ---------------------------------------------------------------------------------5-78 COUNTER GR. ----------------------------------------------------------------------------5-42 ADJUST GR. --------------------------------------------------------------------------------5-42 Appendix OPTION GR. --------------------------------------------------------------------------------5-43 FUNCTION GR. ----------------------------------------------------------------------------5-43 General Timing Chart --------------------------------------------------------6-2 LOG GR.
  • Page 14 Product Description ■ Characteristics ■ System Configuration ■ Product Specifications ■ Detailed Specification ■ Parts Name ■ Operation ■ Safety Precautions Product Description...
  • Page 15 Product Description > System Configuration > System Configuration Characteristics System Configuration System Configuration ● High-Speed Color Printer This machine is a high-speed color printer, realizing a speed of approximately 30 pages per minute in full-color printing with A4 vertical paper. ●...
  • Page 16 Product Description > System Configuration > System Configuration Option Description Model [6] SD CARD-B1 1 Received printing jobs can be temporarily stored. LBP7780C 2 . Functions such as spool of printing jobs, LBP5480 encrypted secure print, secured print, electronic sorting, printing in interrupt mode, etc. Product Description >...
  • Page 17 Product Description > Product Specifications > Host Machine Specifications (LBP7750C/LBP5460) Product Specifications Item Function / Method Paper size for the cassette Standard sizes: A4, B5, A5, Letter, Executive, 16K Host Machine Specifications (LBP7750C/LBP5460) Custom paper sizes: • Portrait orientation (when the short edges of the paper are parallel to the front side of the printer): Item Function / Method...
  • Page 18 Product Description > Product Specifications > Host Machine Specifications (LBP7780C/LBP5480) Host Machine Specifications (LBP7780C/LBP5480) Item Function / Method Automatic gradation correction Enabled Item Function / Method Temperature range in the use environment 10 - 30 degree C Installation of the host machine Desktop page printer Humidity range in the use environment 10 - 80%RH...
  • Page 19 Product Description > Product Specifications > Host Machine Specifications (LBP7780C/LBP5480) Item Function / Method Item Function / Method Paper size for the cassette Standard sizes: Stack capacity of the delivery tray Approx.200 sheets (Plan paper, 80g/m A4, B5, A5, A6, Letter, Executive Statement and 16K Memory capacity 768MB Custom paper sizes *1:...
  • Page 20 Product Description > Detailed Specification > Printing Speed > LBP7780C/LBP5480 Detailed Specification ■ LBP7780C/LBP5480 • Specification of printing speed Printing Speed • Unit: 1-sided = sheets / min, 2-sided = pages / min Cassette 1 pickup Multi-purpose tray Printing speed of the LBP7750C/5460 machine is shown below. The machine provides the 1-sided 1-sided same speed in both color and monochrome modes.
  • Page 21 Product Description > Detailed Specification > Paper Size Paper Type Paper Size ●: Both single-sided and duplex printing is supported. This printer supports the following paper sizes. ○: Only single-sided printing is supported. ●: Both single-sided and duplex printing is supported. - : Printing cannot be performed.
  • Page 22 Product Description > Parts Name > External View > Front View of the Printer Parts Name *5 The custom size paper whose short edges are 5.83 to 8.50 in. (148.0 to 215.9 mm) and long edges are 5.83 to 8.50 in. (148.0 to 215.9 mm) can be loaded. *6 The custom size paper whose short edges are 8.27 to 8.50 in.
  • Page 23 Product Description > Parts Name > External View > Back View of the Printer 1-10 ● LBP7780C/LBP5480 ■ Back View of the Printer ● LBP7750C/LBP5460 [10] F-1-3 Power switch USB memory connector Front cover Right cover Cassette Ventilation Slots Control Panel Multi-purpose tray [11] Delivery tray...
  • Page 24 Product Description > Parts Name > External View > Inside of the Printer 1-11 ● LBP7780C/LBP5480 ■ Inside of the Printer F-1-5 Slot Cover LAN Connector USB Connector (for USB devices) Lift Handles USB Connector (forconnecting to computer) Rating Label ACT Indicator (Green) [10] Ventilation Slots...
  • Page 25 Product Description > Operation > Control Panel > LBP7750C/LBP5460 1-12 Cross Section View Operation [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] [ 6 ] [ 7 ] [ 8 ] Control Panel ■...
  • Page 26 Product Description > Operation > Control Panel > Control Panel Key 1-13 ■ Lamp ■ Control Panel Key Name Condition Name Function Online Lighting The printer is in the on-line condition (Print data can be [1] On-line The on-line and off-line conditions are switched. When the key lights up, (Green) received from the computer in this condition).
  • Page 27 Product Description > Operation > Control Panel > LBP7780C/LBP5480 1-14 ■ LBP7780C/LBP5480 Name Function [14] Reset On-line The reset menu is displayed. Printer reset operation, discharging of printing data, and Off-line shutdown operation are performed. Displaying the menu The lower item in the same level is selected. When a numeric value is selected, the value decreases.
  • Page 28 Product Description > Operation > Control Panel > Control Panel key 1-15 ■ LAMP ■ Control Panel key Name Function Name Condition Online Switches between online and offline. The printer is online when the Online Indicator Lighting Online (The printer can receive print data from indicator under the key is on and is offline when the indicator is off.
  • Page 29 Product Description > Operation > Control Panel > Control Panel key 1-16 Name Function Name Function (11) While the menu is Goes back up the previous hierarchy. This key is (16) Settings When the printer is Displays the [Setup] menu. Configure the displayed indicated as [◄] in this manual.
  • Page 30 Product Description > Operation > Setup Menu > Control Menu Options (LBP7750C/LBP5460) 1-17 Job Menu Setup Menu ■ Setting Items ■ Control Menu Options (LBP7750C/LBP5460) Setting Setting Value Setting Setting Value Job Menu Encrypted Print Power Save Mode [On] , [Deep Sleep], [Off], [Panel Off] Secured Print Power Save in Error [On]...
  • Page 31 Product Description > Operation > Setup Menu > Control Menu (LBP7780C/LBP5480) 1-18 ■ Control Menu (LBP7780C/LBP5480) Setting Setting Value Date and Time Setting Setting Value Date Settings 01/01/2001 to 31/12/2089 High (Deep Sleep) 12/24 Hour Clock [AM/PM]*, [24 Hour] Mid (Printer Sleep) Sleep Mode Low (Panel Sleep) •...
  • Page 32 Product Description > Operation > Setup Menu > Paper Source Menu Options (LBP7750C/LBP5460) 1-19 ■ Paper Source Menu Options (LBP7750C/LBP5460) Setting Setting Value Date 01/01/2001 to 31/12/2089 Setting Setting Value • When [AM/PM] is selected in [12/24 Hour Clock]: MP Tray Paper Size [LTR]*, [LGL], [EXEC], [Mixed Sizes], [Custom Size], [Custom Size R], 00:00:00 AM/PM to 11:59:59 AM/PM [ENV.
  • Page 33 Product Description > Operation > Setup Menu > Standard Network Menu Options (LBP7750C/LBP5460) 1-20 ■ Paper Source (LBP7780C/LBP5480) ■ Standard Network Menu Options (LBP7750C/LBP5460) Setting Setting Value Setting Setting Value Paper Source [Auto]*, [Drawer 1], [Multi-Purpose Tray] TCP/IP Settings MP Tray Paper Size [A6], [A5], [A5R], [B5],[A4]*, [LTR], [LGL], [EXEC], [Mixed Size], [Custom IP v.4 Settings IP Mode...
  • Page 34 Product Description > Operation > Setup Menu > Standard Network Menu Options (LBP7750C/LBP5460) 1-21 Setting Setting Value Setting Setting Value Proxy Settings Proxy [Off] , [On] MAC Address (Display only) Server Address E-Mail Print Set. Port Number 0 to 80 to 99999 POP3 Interval to 90...
  • Page 35 Product Description > Operation > Setup Menu > Network (LBP7780C/LBP5480) 1-22 ■ Network (LBP7780C/LBP5480) Setting Setting Value Remote UI Settings Setting Setting Value Remote UI [On] , [Off] TCP/IP Settings [Off] , [On] IP v.4 Settings IP v 4 [On] , [Off] Ethernet Driver IP Mode...
  • Page 36 Product Description > Operation > Setup Menu > Quality Menu Options (LBP7750C/LBP5460) 1-23 ■ Layout Menu Options (LBP7750C/LBP5460) Setting Setting Value Halftones Setting Setting Value B & W Halftones Text [Resolution] , [Gradation], [Color Tone], Copies to 9999 [High Resolution], [Error Diffusion] Offset Y -1.97 to 0.0 to 1.97 (in.)
  • Page 37 Product Description > Operation > Setup Menu > Quality (LBP7780C/LBP5480) 1-24 ■ Quality (LBP7780C/LBP5480) Setting Setting Value Gamma Text [1.4] , [1.8], [2.2], [1.0] Setting Setting Value Graphics [1.4] , [1.8], [2.2], [1.0] Gradation Level [High 1] , [High 2] Image [1.4] , [1.8], [2.2], [1.0]...
  • Page 38 , [Gamma] Graphics [CMS] , [Gamma] Image [CMS] , [Gamma] RGB Source Profile Text [sRGB_v3.0(Canon)]*, [Canon HDTV_gamma_1.5], [Canon HDTV_gamma_1.8], [Canon HDTV_ gamma_2.4] Graphics [sRGB_v3.0(Canon)]*, [Canon HDTV_gamma_1.5], [Canon HDTV_gamma_1.8], [Canon HDTV_ gamma_2.4] Image [sRGB_v3.0(Canon)]*, [Canon HDTV_gamma_1.5], [Canon HDTV_gamma_1.8], [Canon HDTV_ gamma_2.4]...
  • Page 39 Product Description > Operation > Setup Menu > User Maintenance Options (LBP7750C/LBP5460) 1-26 ■ User Maintenance Options (LBP7750C/LBP5460) ■ Interface Menu Options (LBP7750C/LBP5460) Setting Setting Value Setting Setting Value Adj. Start Position Interface Connection [On] , [Off] Offset Y (MP Tray) -0.20 to 0.0 to 0.20 (in.) Network...
  • Page 40 Product Description > Operation > Setup Menu > UFR II (LBP7780C/LBP5480) 1-27 ■ User Maintenance (LBP7780C/LBP5480) ■ Print Mode Options (LBP7750C/LBP5460) Setting Setting Value Setting Setting Value Adj. Start Position Mode Selection [Auto Selection] , [PCL], [PS] , [PDF] Offset Y (MP Tray) -5 to 0.0 to 5 Auto Switch...
  • Page 41 Enlarge Print Area [Off] , [On] Resolution/Grad Text [Resolution] , [Gradation] RGB Source Profile [sRGB_v3.0(Canon)]*, [Canon HDTV_gamma_1.5], [Canon HDTV_ Graphics [Resolution], [Gradation] gamma_1.8], [Canon HDTV_gamma_2.4] Image [Resolution], [Gradation] CMYK Sim. Profile [Euro Standard v1.00], [Japan Color(Canon)] , [U.S Web Coated v1.0]...
  • Page 42 [Canon HDTV_gamma_1.8], [Canon HDTV_ absence of options, or contents of other setting items. gamma_2.4], [None] • Setting values with "*" are factory setting values CMYK Sim. Profile [Euro Standard v1.00], [Japan Color(Canon)], [U.S Web Coated v1.0], [None] ■ Imaging (LBP7780C/LBP5480) Grayscale Profile [Off]...
  • Page 43 Product Description > Operation > Utility Menu (LBP7780C/5480) 1-30 Utility Menu (LBP7750C/LBP5460) ■ MEAP Setting (LBP7780C/LBP5480) Setting Setting Value Select Def. Screen Setting Setting Value Print Screen Configuration Page MEAP Network Status Print • Items and setting values with "*1" may not be displayed depending on the model, presence/ Calibration [Color Regis.
  • Page 44 Product Description > Operation > Select Feeder (LBP7780C/5480) 1-31 Select Feeder Menu (LBP7750C/LBP5460) Setting Setting Value Print MEAP Sys. Info Setting Setting Value Serial Number Paper Source [Auto] , [Cassette 1], [Cassette 2] , [Multi-purpose Tray] Consumables Paper Information [Multi Purpose Tray], [Drawer 1] MP Tray Paper Size [LTR] , [LGL], [EXEC], [Mixed Sizes], [Custom Size], [Custom Size R,...
  • Page 45 Product Description > Operation > Application (LBP7780C/LBP5480) 1-32 Application (LBP7780C/LBP5480) Setting Setting Value Auto Selection Multi-Purpose Tray [On] , [Off] Setting Setting Value Drawer 1 [On] , [Off] USB Print Setting Default Paper Type [Plain]*, [Plain L], [Plain L2], [Heavy 1], [Heavy 2], [Heavy 3], [Transparency], [Labels], [Rough] PDF/XPS No.
  • Page 46 Product Description > Safety Precautions > How to Handle the Laser Scanner Unit 1-33 Safety Precautions Toner Safety ■ About Toner Laser Safety Toner is a nontoxic substance which consists of plastic, iron, and a small amount of pigment. Laser beam radiation sometimes causes a danger to human body. To prevent such a danger, Caution : the optical laser system used in this machine is hermetically closed by the protection housing and external cover so that a laser beam does not leak to outside.
  • Page 47 Product Description > Safety Precautions > Points to Note when Performing Disassembly/Assembly 1-34 Points to Note when Replacing/Discarding a Lithium Battery The main controller PCB in this machine contains a lithium battery as backup power supply for various data just in the case when a blackout occurs or the power plug is removed. Caution : If the battery is replaced with an incorrect type of battery, it may cause an explosion.
  • Page 48 Technical Reference ■ Basic Configuration ■ Operation Sequence ■ Laser Exposure System ■ Image Formation System ■ Fixing System ■ Pickup Feeding System ■ Controller System ■ MEAP ■ Embedded RDS Technical Reference...
  • Page 49 Technical Reference > Basic Configuration > Functional Configuration Basic Configuration Functional Configuration The function of this machine is broadly classified into the following five blocks. • Controller system • Laser exposure system • Image formation system • Fixing system • Pickup feeding system The following figure shows the block category of the function.
  • Page 50 Technical Reference > Operation Sequence > Overview Operation Sequence Overview Operation sequence is controlled by the DC controller contained in the controller system. The following shows operation in each interval from when the power of this machine is turned on to when printing is completed and each motor stops.
  • Page 51 Technical Reference > Laser Exposure System > Safety Laser Exposure System One laser scanner unit consists of the laser drive unit, which controls the laser unit, and the scanner motor unit, which controls the scanner motor. One scanner motor and scanner mirror reflect laser beams for two colors.
  • Page 52 Technical Reference > Image Formation System > Image Formation Process > Overview Image Formation System Image Formation Process ■ Overview Overview The image formation process of this machine is broadly classified into six blocks and ten The image formation system forms a toner image on paper. steps.
  • Page 53 Technical Reference > Image Formation System > Image Formation Process > Static Latent Image Formation Block ■ Static Latent Image Formation Block ● Step 3: Laser Beam Exposure A static latent image is formed on the photosensitive drum by a laser beam. This block consists of three steps.
  • Page 54 Technical Reference > Image Formation System > Image Formation Process > Transfer Block ■ Development Block ■ Transfer Block In this block, toner is applied on the static latent image on the surface of the photosensitive This block consists of three steps. In this block, the toner image on the surface of the drum and visualized.
  • Page 55 Technical Reference > Image Formation System > Image Formation Process > Fixing Block ● Step 6: Secondary Transfer ■ Fixing Block The toner on the ITB is transferred onto paper. In this block, a toner image is fixed to paper. A positive DC bias is applied to the secondary transfer outer roller to charge the paper positively.
  • Page 56 Technical Reference > Image Formation System > Controls > High-voltage Power Supply Control Controls ■ ITB Cleaning Block In this block, cleaning is performed to remove waste toner on the surface of the ITB. ■ High-voltage Power Supply Control ● Overview ●...
  • Page 57 Technical Reference > Image Formation System > Controls > Calibration 2-10 ● Generation of a Primary Charging Bias ■ Calibration It is a negative DC bias output to charge the surface of the photosensitive drum with a ● Overview uniform negative potential as preparation for image formation. It is generated for each color (Y, Calibration is performed to correct color displacement and density change in an image M, C, Bk) by the primary charging bias generation circuit in lower high-voltage power supply caused by environmental changes and individual differences among host machines to print a...
  • Page 58 Technical Reference > Image Formation System > Controls > Calibration 2-11 Image color displacement measurement control is performed in the following conditions. • When a specified time elapses after printing was completed • After the cartridge is replaced • After the cartridge is replaced •...
  • Page 59 Technical Reference > Image Formation System > Cartridge > Cartridge Life Detection 2-12 Cartridge The inside of the cartridge consists of the following components. • Photosensitive drum ■ Overview • Developing assembly • Primary charging roller The cartridge forms a visible image on the photosensitive drum with toner. The DC controller rotates the drum motor, and drives the photosensitive drum, developing Four types of cartridges are installed;...
  • Page 60 Technical Reference > Image Formation System > Cartridge > Developing Assembly Engagement/Disengagement Control 2-13 ■ Developing Assembly Engagement/Disengagement Control <All developing assemblies are engaged with the photosensitive drums> Photosensitive drum Developing This control is performed to engage/disengage the necessary developing assembly with/from disengagement cam the photosensitive drum according to the specified print mode (full color/monochrome).
  • Page 61 Technical Reference > Image Formation System > ITB Unit > Overview 2-14 ITB Unit DC controller rotates the developing engagement motor and changes the direction of the engagement/disengagement cam to engage/disengage the developing assembly with/from ■ Overview the photosensitive drum. The ITB unit primarily transfers the toner image on the photosensitive drum onto the ITB.
  • Page 62 Technical Reference > Image Formation System > ITB Unit > Primary Transfer Roller Engagement/Disengagement Control 2-15 ■ Primary Transfer Roller Engagement/Disengagement Control Engagement/disengagement operation of the primary transfer roller is explained below. The drive force of the fixing motor is sent to the primary transfer roller disengagement cam This control is performed to engage the ITB with the necessary photosensitive drum by the primary transfer roller disengagement solenoid and rotates the cam.
  • Page 63 Technical Reference > Image Formation System > ITB Unit > ITB Cleaning Mechanism 2-16 ■ ITB Cleaning Mechanism ● Overview The ITB cleaner cleans the surface of the ITB. Waste toner on the surface of the ITB is removed by the cleaning blade mounted inside of the cleaner.
  • Page 64 Technical Reference > Fixing System > Various Controls > Speed Control with Small Size Paper (Throughput Down Control) 2-17 Fixing System Various Controls ■ Speed Control with Small Size Paper (Throughput Down Overview Control) Fixing control is performed to control the temperature of the fixing assembly. This control is the control to prevent the temperature at the edge of Fixing Heater from The on-demand fixing method is used in the fixing assembly of this machine.
  • Page 65 Technical Reference > Fixing System > Various Controls > Fixing Temperature Control 2-18 ■ Fixing Temperature Control Paper type Paper Print speed(ppm) size Cassette pickup/ Multi-purpose tray pickup ● Overview option cassette pickup Fixing temperature control is performed to keep the temperature of the surface of the fixing Heavy paper 2 9.5 (->5.0->3.0) sleeve to be the target temperature.
  • Page 66 Technical Reference > Fixing System > Various Controls > Pressure Roller Pressure Release Control 2-19 ■ Pressure Roller Pressure Release Control Speed Paper type Setting on driver Target temperature (deg C) 1/3 speed Heavy paper (115 to 176 g/m Heavy paper 2 This control is performed to prevent deformation of the fixing sleeve and pressure roller and T-2-4 improve jam removal performance by releasing pressure of the fixing roller at other time than...
  • Page 67 Technical Reference > Fixing System > Various Controls > Failure Detection 2-20 ■ Protection Function <Thermo switch> When the temperature of the fixing heater increased abnormally and the temperature of ● Overview the thermo switch reached the following condition, the contact point of the thermo switch This function blocks power distribution to the heater by detecting an abnormal temperature becomes opened and power distribution to the fixing heater is blocked.
  • Page 68 Technical Reference > Fixing System > Various Controls > Failure Detection 2-21 <Abnormal low temperature detection> When the following conditions are detected after each thermistor reached a specified temperature after the power was turned on, the DC controller judges that an abnormal low temperature occurred regardless of the fixing heater drive condition.
  • Page 69 Technical Reference > Pickup Feeding System > Overview 2-22 Pickup Feeding System The schematic diagram of the motors, solenoids, and clutches is shown below. : Duplex feed path Overview : Single-sided feed path The pickup feeding system feeds and transports paper. Duplex flapper The schematic diagram of the sensors is shown below.
  • Page 70 Technical Reference > Pickup Feeding System > Pickup Feeding Assembly > Overview 2-23 Pickup Feeding Assembly The pickup feeding system is broadly classified into three blocks. 1. Pickup feeding assembly: From each pickup inlet to the fixing assembly inlet ■ Overview 2.
  • Page 71 Technical Reference > Pickup Feeding System > Pickup Feeding Assembly > Cassette Presence Detection 2-24 ■ Cassette Pickup ■ Cassette Presence Detection Cassette pickup is performed to feed the paper in the cassette to inside of the machine one Cassette presence detection is performed by the cassette presence sensor. by one.
  • Page 72 Technical Reference > Pickup Feeding System > Pickup Feeding Assembly > Cassette Paper Presence Detection 2-25 ■ Lifting Operation ● Lift-down Operation When the lifting plate is placed at the position where pickup can be performed, the paper is Lifting operation is classified into the lift-up operation, which lifts up the paper surface to the pressed to the cassette pickup roller.
  • Page 73 Technical Reference > Pickup Feeding System > Pickup Feeding Assembly > Multi-purpose Tray Pickup 2-26 ■ Cassette Double Feeding Prevention Mechanism ■ Multi-purpose Tray Pickup In this machine, the separation roller method is used as a mechanism to prevent double Multi-purpose tray pickup is performed to feed the paper on the multi-purpose tray into the feeding when paper is picked up from the cassette.
  • Page 74 Technical Reference > Pickup Feeding System > Pickup Feeding Assembly > Paper Feed 2-27 ■ Paper Feed DC controller The paper fed from the cassette or multi-purpose tray is transported to the fixing/delivery assembly. The DC controller drives the pickup motor (M13) and drum motor 3 (M5), rotates the Secondary transfer outer roller registration roller, secondary transfer outer roller, and ITB unit to feed the paper.
  • Page 75 Technical Reference > Pickup Feeding System > Pickup Feeding Assembly > OHT Detection Mechanism 2-28 ■ Skew Correction Mechanism ■ OHT Detection Mechanism In this mechanism, paper skew can be corrected without decreasing throughput. Since the printing condition is changed in this machine depending on whether the paper is The operation in the skew correction mechanism is explained below.
  • Page 76 Technical Reference > Pickup Feeding System > Fixing/Delivery Assembly > Loop Control 2-29 Fixing/Delivery Assembly ■ Loop Control This control is performed to stabilize feeding of paper in front of the fixing assembly. ■ Overview When the feeding speed of the pressure roller is slower than that of the secondary transfer The fixing/delivery assembly consists of the fixing assembly, which fixes toner on the paper, outer roller, the paper is bent more significantly, and an image failure and paper wrinkle occur.
  • Page 77 Technical Reference > Pickup Feeding System > Duplex Assembly > Duplex Pickup Operation 2-30 Duplex Assembly ■ Duplex Reverse/Duplex Feed Control This control is performed to execute duplex printing by reversing the paper of which the first ■ Overview side printing is completed and feeding it into the printer again. The duplex reverse assembly is placed at the upper side, and the duplex feed assembly is The reverse operation is performed by control of the duplex reverse motor (M11) and duplex placed at the right side of the host machine, which reverse/feed paper.
  • Page 78 Technical Reference > Pickup Feeding System > Jam Detection > Wrapping Jam 2-31 Jam Detection ■ Pickup Delay Jam ● When Picked Up From The Cassette ■ Overview The leading edge of the paper cannot be detected by the TOP sensor (SR8) within a specified The following paper sensors are provided to detect the presence of paper and whether the time after the cassette pickup solenoid (SL4) is turned on.
  • Page 79 Technical Reference > Pickup Feeding System > Jam Detection > Door Open Jam 2-32 ■ Residual Paper Jam The presence of the paper is detected by the following sensors when the machine is turned on or the door is closed. •...
  • Page 80 Technical Reference > Controller System > DC Controller PCB > Overview 2-33 Controller System DC Controller PCB ■ Overview Overview The DC controller controls the operation sequence in this machine. The controller system controls all blocks following instructions received from the main LBP7750C/LBP5460 controller.
  • Page 81 Technical Reference > Controller System > DC Controller PCB > Overview 2-34 LBP7780C/LBP5480 Electrical parts Electrical symbol Name Remarks Power supply fan Cartridge fan Motor Delivery fan Solenoid Controller box Upper high-voltage Motor Motor Fixing motor ITB unit power supply Drum motor 1 Secondary Clutch...
  • Page 82 Technical Reference > Controller System > DC Controller PCB > Motor/Fan Control 2-35 ■ Motor/Fan Control Electrical parts Electrical symbol Name Remarks Photo interrupter Drum home position sensor 1 ● Overview Drum home position sensor 2 This machine uses 11 motors for paper feed and image formation. It also has four fan motors Drum home position sensor 3 to prevent a temperature increase in the machine.
  • Page 83 Technical Reference > Controller System > Low-voltage Power Supply > Overview 2-36 Low-voltage Power Supply ■ Failure Detection ● Motor Failure Detection ■ Overview Fixing motor, Drum motor 1 - 3, Scanner motor (Y/M, C/Bk): The low-voltage power supply converts the AC voltage input from the power supply receptacle When the following conditions are detected, the DC controller judges that a failure occurred in into a DC power supply, and supplies it to each load.
  • Page 84 Technical Reference > Controller System > Low-voltage Power Supply > Safety 2-37 LBP7780C/LBP5480 The low-voltage power supply converts the supplied AC power into +24V, +5V, and +3.3V DC power supply, which is needed in the printer host machine. Main SW The +24V DC power supply consists of +24VA, which is supplied by the low-voltage power AC Realay All night power supply...
  • Page 85 Technical Reference > Controller System > Low-voltage Power Supply > Low-voltage Power Supply Failure 2-38 ■ Power Supply Voltage Detection Function This function detects the voltage of the power supply connected with the printer. The DC controller detects whether the voltage of the power supply is 100V or 200V based on the output condition of the power supply voltage detection signal (PSTY100), and performs fixing control according to the detection result.
  • Page 86 Technical Reference > MEAP > About MEAP > Overview 2-39 MEAP About MEAP ■ Overview Introduction MEAP (Multifunctional Embedded Application Platform) is an application platform (execution ■ References by purpose platform) that allows the user to execute an application written in the Java language on a Java virtual machine installed on the device.
  • Page 87 Technical Reference > MEAP > About SMS > About the MEAP Application Installation Screen 2-40 About SMS ■ About the MEAP Application Management Screen This screen is used to perform basic management of MEAP applications. Its main functions ■ Overview are listed below.
  • Page 88 Technical Reference > MEAP > About SMS > About System Management 2-41 For details of this function, see "Installing an MEAP Application" in this chapter. ■ About System Management It is used to perform MEAP management other than management of MEAP applications and installation of MEAP applications.
  • Page 89 Technical Reference > MEAP > Preparation for Using SMS > Device Settings 2-42 Preparation for Using SMS ■ Device Settings ● Network configuration ( Activate Netowork Settings ) To use SMS, you need to set up network settings for the PC, browser, and devices that are used to access SMS.
  • Page 90 Technical Reference > MEAP > Preparation for Using SMS > Device Settings 2-43 ● Key Pair and Server Certificate when Using Encrypted SSL 2) Click [ Management Settings ] > [ Security ] > [ Key and Certificate Settings ]. Communication To use SMS via SSL connection, it is required to specify a key pair and server certificate as the key to be used.
  • Page 91 Technical Reference > MEAP > Preparation for Using SMS > Device Settings 2-44 4) Enter the necessary information, and then click the [ OK ] button. Note: When the IP address of the device has been entered in the [Common Name] entry field, if you install a server certificate to the browser ( see "Installing a server certificate (reference information)"...
  • Page 92 Technical Reference > MEAP > Preparation for Using SMS > Device Settings 2-45 3) Select the generated key, and then click the [ Default Key Settings ] button. Installing a server certificate (reference information) On Internet Explorer 7 (IE) or later, if [ Default Key ] installed as standard on the device is used, "Certificate Error"...
  • Page 93 Technical Reference > MEAP > Preparation for Using SMS > Device Settings 2-46 3) Click the [ Install Certificate... ] button on the [ General ] tab. 5) In [ Certificate Store ], select the [ Place all certificates in the following store ] option, and then click the [ Browse ] button.
  • Page 94 Technical Reference > MEAP > Preparation for Using SMS > Device Settings 2-47 7) You will return to the [ Certificate Store ] dialog. Check that "Trusted Root Certification 9) If the [Security Warning] appears, click the [Yes] button. (It does not appear when installing Authorities"...
  • Page 95 Technical Reference > MEAP > Preparation for Using SMS > How to Check the Serial Number 2-48 ● Network Port Settings Note: The default port of the HTTP server used for MEAP and MEAP applications to provide the If PS Print Server Unit is connected, do not specify port 8080. If port 8080 is specified, the RUI of the device where the MEAP authentication servlet function is 8000, and the HTTPS server's default port is 8443.
  • Page 96 Technical Reference > MEAP > Login to SMS > Procedure to Log in 2-49 Login to SMS ● Checking from the device's Control Panel From [ Utility Menu ], select [ Serial Number ]. ■ Procedure to Log in Utility Menu Serial Number Use the following procedure to log in to SMS.
  • Page 97 Technical Reference > MEAP > Login to SMS > Procedure to Log in 2-50 ● When SMS Cannot Be Accessed Note: If you forgot the password (SMS login password initialization) SMS Access can be gained also from Remote UI. Access Remote UI and click on SMS shortcut shown on the lower right of the screen to After changing the default SMS login password, if you forgot the new password and cannot gain access to SMS.
  • Page 98 Technical Reference > MEAP > Login to SMS > Procedure to Log in 2-51 ● If login is not possible due to exclusive control ● If [ Key and Certificate Settings ] is not set Because SMS uses exclusive control, if there is another user already logged in to the SMS of If [ Key and Certificate Settings ] is not set correctly, you cannot access the URL for SMS the same device, then you cannot log in.
  • Page 99 Technical Reference > MEAP > Installing an MEAP Application > Procedure to install applications 2-52 Installing an MEAP Application ■ Procedure to install applications 1) Long on to SMS. ■ Outline 2) Click [ Install MEAP Application ] on the menu. From the MEAP application installation screen, you can install the MEAP application as well as the license file.
  • Page 100 Technical Reference > MEAP > Installing an MEAP Application > Procedure to install applications 2-53 8) Upon installation completed, click [ To MEAP Application Management ] button shown on CAUTION: the screen to view MEAP Application Management page. • You cannot install only the license. •...
  • Page 101 Technical Reference > MEAP > Resource Information > About MEAP Application Management Page 2-54 Resource Information Note: There are two ways to install an MEAP application. You can install using SMS, or install ■ About MEAP Application Management Page using the [Register/Update Software] screen of the remote UI. Screen example Application Management page shows [ resource information ] for information of the whole device resources including Amount Used, Remaining, and Percent Used.
  • Page 102 Meanwhile, MEAP Specifications shows other information than defined by Device http://www.canon.com/lms/license/ Specification ID above, including network and security. Thus each model does not always have the same version.
  • Page 103 Technical Reference > MEAP > MEAP Specifications > What is MEAP Specifications (MEAP Spec Version)? 2-56 MEAP Specifications for each model Description ImagingAPI (Creation API of Visible Signature PDF) added Product Name Initial MEAP SpecVer Reserved i-SENSYS LBP7680Cx/ imageCLASS 11, 15, 18, 19, 25, 26, 27, 29, 34, 39, 43, 45, Reserved LBP7680Cdn 47, 50, 51, 52, 54, 55, 57, 58, 60, 61, 62, 63,...
  • Page 104 Technical Reference > MEAP > MEAP Application Management > Starting, Stopping, or Uninstalling the MEAP Application 2-57 MEAP Application Management 4) Check to see that the status of the MEAP application in question is either [ Started ] or [ Stopped ].
  • Page 105 Technical Reference > MEAP > MEAP Application Management > Starting, Stopping, or Uninstalling the MEAP Application 2-58 ● Proc edure to uninstall the MEAP application 1) Log in to SMS to click [ MEAP Application Management ] on the menu. 2) Check that the status of the application you want to uninstall is [ Stop ] and the license has Before uninstalling the MEAP application, check that the following conditions are met.
  • Page 106 Technical Reference > MEAP > MEAP Application Management > Managing the License File 2-59 ■ Managing the License File ● Procedure adding a license file 1) Log on to SMS. ● Outline 2) On MEAP Application Management, click the name of the application to which you want to The license file management functions allow you to perform the following operations related add a license file.
  • Page 107 Technical Reference > MEAP > MEAP Application Management > Managing the License File 2-60 4) Click [ Browse ] button, and select the license file you want to install. ● Procedure disabling a license file (suspending a license) CAUTION: • Since the license file cannot be disabled when the application is still running, the application needs to be stopped before disabling the license file.
  • Page 108 Technical Reference > MEAP > MEAP Application Management > Managing the License File 2-61 2) Click the name of the application that you want to disable. 5) Click [ Yes ]. F-2-106 F-2-103 3) On Application/ License Information page, click [ License Management ] button. F-2-104 4) License Management page appears.
  • Page 109 Technical Reference > MEAP > MEAP Application Management > Managing the License File 2-62 ● Procedure downloading / removing an invalidated license file 5) License Management page appears. To download, click [ Download ] button. Note: The downloaded license file can be used for reinstallation only in the same iR device (with the same device serial number).
  • Page 110 Technical Reference > MEAP > MEAP Application Management > Other License File Management Functions 2-63 8) When the dialog to confirm deletion is shown, click [ Yes ] button. ■ Other License File Management Functions ● Reusable license When reinstalling, Disable License file should be downloaded (see “Disabling a License File .”...
  • Page 111 Technical Reference > MEAP > MEAP Application Management > Other License File Management Functions 2-64 ● License for forwarding 3) Specify the application to be forwarded. If the machine needs to be replaced due to a device failure, you can transfer the license information used in the MEAP application to the new machine and continue its usage.
  • Page 112 Technical Reference > MEAP > MEAP Application Management > Other License File Management Functions 2-65 6) When [Download] button on the [ Download / Delete Transfer License File ] becomes 9) After downloading the license file for forwarding, click [ Delete ] to display the confirmation effective, click [Download] button.
  • Page 113 Technical Reference > MEAP > Enhanced System Application Management > Procedure Changing Login Services 2-66 Enhanced System Application Management ■ About Login Service The login service is started up to authenticate the user when MEAP-enabled iR device is ■ Outline booted up.
  • Page 114 Technical Reference > MEAP > Enhanced System Application Management > Procedure Installing Login Services 2-67 2) Click the [ SWITCH ] button of the login service you want to switch to. ■ Procedure Installing Login Services Use the following procedure to install the login services. 1) Access SMS, and then click [ System Management ] >...
  • Page 115 Technical Reference > MEAP > System Application Management > Procedure to manage System Application 2-68 System Application Management ■ Procedure Uninstalling Login Services Use the following procedure to uninstall the login services. This function manages the login services for logging in to SMS. Also, note that the services need to be stopped ("Installed"...
  • Page 116 Technical Reference > MEAP > System Information > Display of System Information Details 2-69 System Information ■ Display of System Information Details The system information details can be displayed to check more than one pieces of information ■ Outline all at the same time: platform information, system application information, information on the You can check the device's platform information and the MEAP application's system installed MEAP applications, etc.
  • Page 117 Application Name: C-Cabinet Gateway for MEAP Application ID/System Application Name: 03a46668-63e4-4636-9cbb-492b6cef05d5 Application Version: 1.0.0 Status: Resolved Installed on: Tue Oct 21 14:00:11 GMT+09:00 2003 Vendor : Canon Inc. License Status : Installed Maximum Memory Usage : 1024 Registered Service : Item...
  • Page 118 Technical Reference > MEAP > MEAP Application Information > Procedure to Check MEAP Application Information 2-71 MEAP Application Information 3) The MEAP application information screen appears. ■ Outline You can use this function to check the MEAP application installed on the device. The following information can be checked on the MEAP application information screen.
  • Page 119 Technical Reference > MEAP > Changing SMS Login Password > Procedure to Change the SMS Login Password 2-72 Check License Changing SMS Login Password ■ Outline ■ Outline You can use this function to check the contents of the license file. You can change the password for logging in to SMS.
  • Page 120 Technical Reference > MEAP > MEAP Application Setting Information Management and Log Management > Advantages Obtained When Using the Services 2-73 MEAP Application Setting Information Management ■ Advantages Obtained When Using the Services and Log Management By using MEAP Application Configuration Service and MEAP Application Log Service, as long as the MEAP application supports these services, you can perform data management tasks ■...
  • Page 121 Technical Reference > MEAP > MEAP Application Setting Information Management and Log Management > MEAP Application Log Management 2-74 ■ MEAP Application Setting Information Management ■ MEAP Application Log Management The setting data (stored on the device) of the MEAP application which supports the The log data (stored on the device) of the MEAP application which supports the Log Service Configuration Service can be deleted.
  • Page 122 Technical Reference > MEAP > Maintenance > When Replacing the PCB 2-75 Maintenance 5) To delete the log The confirmation screen will appear to prompt you to delete the log. Click the [ Yes ] button ■ When Replacing the PCB to delete the log.
  • Page 123 Technical Reference > MEAP > Maintenance > Actions to be taken when E616 is displayed. 2-76 ● Procedure for reinstalling MEAP applications after replacing the PCB ■ Actions to be taken when E616 is displayed. The following shows the procedure when replacing the PCB. ●...
  • Page 124 Technical Reference > MEAP > Maintenance > MEAP Safe Mode 2-77 ■ MEAP Safe Mode ● How to cancel MEAP SAFE mode If you want to cancel MEAP SAFE mode, just restart the device as usual. It will start in normal ●...
  • Page 125 Technical Reference > MEAP > Maintenance > Using USB Devices 2-78 ■ Using USB Devices USB Storage Device Application that supports mass storage MEAP application that Settings: [ MEAP Driver ] device supports system driver ● Two types of USB drivers OFF (*default) Cannot use USB mass storage device.
  • Page 126 (Esplet Type show user interfaces either on Local UI or Web. Esplet is a coined word USB Setting Application) created by Canon, consisting of [ Espresso ] or Italian coffee and [ let ] Registration System driver System driver Application with...
  • Page 127 Technical Reference > MEAP > Reference material > Glossary 2-80 Terms & Acronyms Definitions and Explanations Terms & Acronyms Definitions and Explanations J2RE A set of basic programs to run applications developed in the programming MEAP Specifications MEAP Spec Version, the term used for the SDK. The version number that (Java 2 Runtime language of Java2.
  • Page 128 Technical Reference > Embedded RDS > Service cautions 2-81 Embedded RDS ■ Features and benefits E-RDS embedded with a network module in advance can realize a front-end processing Product Overview of e-Maintenance/ imageWARE Remote system without attaching any extra hardware equipment.
  • Page 129 Technical Reference > Embedded RDS > E-RDS Setup > Confirmation and preparation in advance 2-82 E-RDS Setup 4) Communication tests can be conducted in user mode.* When conducting a communication test in user mode, pay attention on the following points: ■...
  • Page 130 Technical Reference > Embedded RDS > E-RDS Setup > Steps to E-RDS settings 2-83 (3) Network settings ■ Steps to E-RDS settings Based on the results of the information obtained in (2) Advance preparations, make this 1. Start [Service Mode]. machine network related settings.
  • Page 131 Technical Reference > Embedded RDS > E-RDS Setup > Steps to E-RDS settings 2-84 5. Perform installation or deletion of the CA certificate if necessary, and reboot this machine. 8. Select [On] and press [OK] button. • Installation of the CA certificate: Perform installation from Remote UI. NOTE: •...
  • Page 132 Technical Reference > Embedded RDS > E-RDS Setup > Initializing E-RDS settings 2-85 If the communication is successful, "Done." is displayed. If "Could not execute." (failed) ■ Initializing E-RDS settings appears, refer to the "Troubleshooting" and repeat until "Done." is displayed. It is possible to return E-RDS Settings to factory-shipments value.
  • Page 133 Technical Reference > Embedded RDS > FAQ 2-86 4. Select [CLEAR] and press [OK] or [ ] button to display Confirm Initialization screen. No.1 Select [Yes] and press [OK] button. Q: In what case does a communication test with UGW fail? E-RDS Execute? A: The following cases can be considered in the becoming "Could not execute."...
  • Page 134 Technical Reference > Embedded RDS > FAQ 2-87 No.5 No.10 Q: Although Microsoft ISA as a proxy server is introduced, the authentication check is failed. Q: Counter information could not be sent at the scheduled send time due to the power of this Can E-RDS adopt with Microsoft ISA? machine being turned OFF.
  • Page 135 Technical Reference > Embedded RDS > Troubleshooting 2-88 Troubleshooting Remedy 2: Troubleshooting using communication log (COM-LOG) 1) Start [Service Mode]. No.1 2) Select [NETWORK GR.] > [E-RDS] > [COM-LOG] and press [OK] or [ ] button to display Symptom: A communication test (COM-TEST) has failed. List Communication Log screen.
  • Page 136 Technical Reference > Embedded RDS > Troubleshooting 2-89 No.3 4) Press [OK] or [ ] button to show the detailed error information. Symptom: There was a log, indicating "Device is not ready, try later" in error details of COM- COM-LOG LOG list.
  • Page 137 Technical Reference > Embedded RDS > Error code and strings 2-90 Error code and strings Code Error strings Cause Remedy 8xxx 0101 Server response Communication with UGW has Perform and complete a error (NULL) been successful, but an error of communication test (COM- The following error information is output in the communication error log details display screen.
  • Page 138 Technical Reference > Embedded RDS > Error code and strings 2-91 Code Error strings Cause Remedy 19 8xxx 2004 Server response Communication with UGW has Try again after a period of time. error been successful, but an error of Check detailed error code ([Hexadecimal]) some sort has prevented UGW (Hexadecimal) and [Error...
  • Page 139 Technical Reference > Embedded RDS > SSL > A making procedure 2-92 2. Select [Settings/Registration] > [Management Settings] > [Security] > [Key and Certificate Settings]. In this machine, there is not SSL which was made by default. It is necessary to make it from Remote UI when you use it.
  • Page 140 Technical Reference > Embedded RDS > SSL > A making procedure 2-93 4. Enter the name of the key to be newly created. Up to 24 alphanumeric characters can be entered. F-2-171 Note: F-2-169 • Key Generation Algorithm 5. Select [Signature Algorithm]. Select from [512 bit], [1024 bit], [2048 bit], or [4096 bit]. The generation algorithm when the printer generates a key is RSA.
  • Page 141 Technical Reference > Embedded RDS > SSL > A making procedure 2-94 7. Specify the effective date and expiration date and the country/region name for the self-sign ● Installing a Key/Certificate File on the Printer server certificate. Then click [OK]. → The key and certificate creation starts. If there are an extra Key and Certificate file, you can also install/register it from a PC.
  • Page 142 Technical Reference > Embedded RDS > SSL > A making procedure 2-95 3. Specify the directory of a key/certificate file. 5. Click [Register Key and Certificate]. F-2-175 F-2-177 4. Click [Start installation].→ The installation of the key/certificate file starts 6. Click [Register]. F-2-178 F-2-176 2-95...
  • Page 143 Technical Reference > Embedded RDS > SSL > A making procedure 2-96 7. Enter the name of the key to be registered. 9. Click [OK]. → The key and certificate registration starts. F-2-179 F-2-181 8. Enter the password specified for the private key. F-2-180 2-96 Technical Reference >...
  • Page 144 Technical Reference > Embedded RDS > SSL > Setting the SSL Encryption Communication Function 2-97 ■ Setting the SSL Encryption Communication Function 3. Select [Network] from the [Preferences] menu. Select the Key and Certificate which was made or registered by the method mentioned. ●...
  • Page 145 Technical Reference > Embedded RDS > SSL > Setting the SSL Encryption Communication Function 2-98 5. Click [Key and Certificate] under [SSL Settings]. ● Changing the Remote UI Settings Specify whether the SSL encrypted communication function should be used for the Remote 1.
  • Page 146 Technical Reference > Embedded RDS > SSL > Setting the SSL Encryption Communication Function 2-99 3. Select [Security] from the [Management Settings] menu. 5. Click [Edit]. F-2-188 F-2-190 4. Click [Remote UI Settings]. 6. Change the Remote UI settings. (1) Select the [Use SSL] check box. If you clear the check box, the remote UI cannot use SSL encrypted communication.
  • Page 147 Technical Reference > Embedded RDS > SSL > Setting the SSL Encryption Communication Function 2-100 Caution: You cannot select the [Use SSL] check box if a key and certificate are not created and registered in advance and a key used by SSL is not selected. 7.
  • Page 148 Disassembly and Assembly ■ Introduction ■ External-related Issues ■ Main Units ■ Main Parts ■ PCB-related Issures Disassembly and Assembly...
  • Page 149 Disassembly and Assembly > Introduction > Points to Note During Disassembly and Assembly Introduction Points to Note During Disassembly and Assembly Be sure to pay attention to the below points in performing disassembly and assembly. 1. In performing disassembly and assembly, for safety precaution be sure to disconnect the power plug. 2.
  • Page 150 Disassembly and Assembly > Introduction > Lay Out Drawing > External-related Issues Lay Out Drawing ● LBP7780C/LBP5480 ■ External-related Issues ● LBP7750C/LBP5460 [12] [11] [12] [10] [11] [10] F-3-2 F-3-1 Disassembly and Assembly > Introduction > Lay Out Drawing > External-related Issues...
  • Page 151 Disassembly and Assembly > Introduction > Lay Out Drawing > Main Units ■ Main Units Number Name Reference Reference (LBP7750C/5460) (LBP7780C/5480) Upper front cover unit (Refer to page 3-16) (Refer to page 3-16) Upper rear cover (Refer to page 3-21) (Refer to page 3-21) Right rear cover (Refer to page 3-13) (Refer to page 3-13) Control panel unit right cover...
  • Page 152 Disassembly and Assembly > Introduction > Lay Out Drawing > Main Units Number Name Reference Reference (LBP7750C/5460) (LBP7780C/5480) Main drive unit (Refer to page 3-55) (Refer to page 3-58) Secondary transfer unit (Refer to page 3-27) (Refer to page 3-27) ITB unit (Refer to page 3-27) (Refer to page 3-27)
  • Page 153 Disassembly and Assembly > Introduction > Lay Out Drawing > Main Units Number Name Reference Reference (LBP7750C/5460) (LBP7780C/5480) Duplex drive unit (Refer to page 3-68) (Refer to page 3-69) Delivery unit (Refer to page 3-64) (Refer to page 3-66) Cassette pickup drive unit (Refer to page 3-50) (Refer to page 3-50) Fixing drive unit (Refer to page 3-61) (Refer to page 3-63)
  • Page 154 Disassembly and Assembly > Introduction > Lay Out Drawing > Main Parts ■ Main Parts Number Name Reference Reference (LBP7750C/5460) (LBP7780C/5480) Multi-purpose tray pickup unit (Refer to page 3-71) (Refer to page 3-74) Duplex feed roller unit (Refer to page 3-70) (Refer to page 3-71) T-3-4 [16]...
  • Page 155 Disassembly and Assembly > Introduction > Lay Out Drawing > PCB-related Issues ■ PCB-related Issues ● LBP7750C/LBP5460 Number Name Reference Reference (LBP7750C/5460) (LBP7780C/5480) Delivery fan (Refer to page 3-93) (Refer to page 3-94) Cartridge fan (Refer to page 3-95) (Refer to page 3-96) Developing disengagement motor (Refer to page 3-86) (Refer to page 3-86)
  • Page 156 Disassembly and Assembly > Introduction > Lay Out Drawing > PCB-related Issues ● LBP7780C/LBP5480 Number Name Reference [11] DC controller PCB (Refer to page 3-113) ICB PCB (Refer to page 3-101) Low-voltage power unit (Refer to page 3-109) Environment sensor (Refer to page 3-122) Main controller PCB (Refer to page 3-101)
  • Page 157 Disassembly and Assembly > Introduction > Lay Out Drawing > PCB-related Issues 3-10 Number Name Reference DC controller PCB (Refer to page 3-114) Sleep IF PCB (Refer to page 3-108) All night PCB (Refer to page 3-107) Low voltage power unit (Refer to page 3-111) Environment sensor (Refer to page 3-122)
  • Page 158 Disassembly and Assembly > External-related Issues > Removing Left Cover(LBP7780C/LBP5480) 3-11 External-related Issues Removing Left Cover(LBP7780C/LBP5480) 1) Open the front cover unit. Removing Left Cover 2) Remove the 4 screws [1]. 1) Remove the cassette. 2) Open the front cover unit. 3) Remove the 3 screws [1].
  • Page 159 Disassembly and Assembly > External-related Issues > Removing Rear Cover(LBP7780C/LBP5480) > Removing the Rear Cover 3-12 Removing Rear Cover Removing Rear Cover(LBP7780C/LBP5480) ■ Before Removing Rear Cover ■ Before Removing Rear Cover 1) Remove the left cover.(Refer to page 3-11) 1) Remove the left cover.(Refer to page 3-11) 2)Remove the right rear cover.(Refer to page 3-13) ■...
  • Page 160 Disassembly and Assembly > External-related Issues > Removing Right Rear Cover(LBP7780C/LBP5480) > Removing the Right Rear Cover 3-13 Removing Right Rear Cover Removing Right Rear Cover(LBP7780C/LBP5480) ■ Before Removing Right Rear Cover ■ Removing the Right Rear Cover 1) Remove the left cover.(Refer to page 3-11) 1) Open the right cover unit.
  • Page 161 Disassembly and Assembly > External-related Issues > Remove the Control Panel Unit Right Cover(LBP7780C/LBP5480) 3-14 Removing the Control Panel Unit Right Cover Remove the Control Panel Unit Right Cover(LBP7780C/ LBP5480) 1) Open the front cover unit. 2) Open the right cover unit. 1)Open the front cover unit.
  • Page 162 Disassembly and Assembly > External-related Issues > Removing the Control Panel Unit Left Cover(LBP7780C/LBP5480) > Before Removing Control Panel Unit Left Cover 3-15 Removing the Control Panel Unit Left Cover Removing the Control Panel Unit Left Cover(LBP7780C/ LBP5480) ■ Before Removing Control Panel Unit Left Cover ■...
  • Page 163 Disassembly and Assembly > External-related Issues > Removing Upper Front Cover Unit > Removing the Upper Front Cover Unit 3-16 Removing Upper Front Cover Unit 2) Slide the Upper Front Cover Unit [1] to the left and remove it. • 2 screws [2] (1 in left side, 1 in front side) ■...
  • Page 164 Disassembly and Assembly > External-related Issues > Removing Upper Front Cover Unit(LBP7780C/LBP5480) > Removing the Upper Front Cover Unit 3-17 Removing Upper Front Cover Unit(LBP7780C/ MEMO : LBP5480) When installing upper front cover unit, be sure to install it to the host machine by passing the cable [1] to the hole [2] of the upper front cover unit.
  • Page 165 Disassembly and Assembly > External-related Issues > Removing Upper Front Cover Unit(LBP7780C/LBP5480) > Removing the Upper Front Cover Unit 3-18 2) Slide the Upper Front Cover Unit [1] to the left and remove it. MEMO : • 2 screws [2] (1 in left side, 1 in front side) •...
  • Page 166 Disassembly and Assembly > External-related Issues > Removing Control Panel Unit > Removing Control Panel Unit 3-19 Removing Control Panel Unit 2) Remove the connector [1] ■ Before Removing Control Panel Unit 1) Remove the control panel unit right cover.(Refer to page 3-14) 2) Remove the left cover.(Refer to page 3-11) 3) Remove the control panel unit left cover.(Refer to page 3-15) 4) Remove the upper front cover unit.(Refer to page 3-16)
  • Page 167 Disassembly and Assembly > External-related Issues > Removing Control Panel Unit(LBP7780C/LBP5480) > Removing Control Panel Unit 3-20 Removing Control Panel Unit(LBP7780C/LBP5480) 2) Remove the control panel unit [1]. • 4 claws [2] ■ Before Removing Control Panel Unit 1) Remove the control panel unit right cover.(Refer to page 3-14) 2) Remove the left cover.(Refer to page 3-11) 3) Remove the control panel unit left cover.(Refer to page 3-15) 4) Remove the upper front cover unit.(Refer to page 3-16)
  • Page 168 Disassembly and Assembly > External-related Issues > Removing Upper Rear Cover(LBP7780C/LBP5480) > Removing Upper Rear Cover 3-21 Removing Upper Rear Cover Removing Upper Rear Cover(LBP7780C/LBP5480) ■ Before Removing the Upper Rear Cover ■ Before Removing the Upper Rear Cover 1) Remove the rear cover.(Refer to page 3-12) 1) Remove the rear cover(Refer to page 3-12) 2) Remove the control panel unit right cover.(Refer to page 3-14) 2) Remove the control panel unit right cover.(Refer to page 3-14)
  • Page 169 Disassembly and Assembly > External-related Issues > Removing the Front Cover Unit 3-22 Removing the Front Cover Unit 2)Remove the USB cable[1] and upper rear cover[2] • 1 screw [3] 1) Open the front cover unit. • 1 cable guide[4] 2) Remove the front cover unit [1].
  • Page 170 Disassembly and Assembly > External-related Issues > Removing Front Right Cover > Removing Front Right Cover 3-23 Removing Front Right Cover 2) Remove the front right cover [1]. • 2 screws [2] ■ Before Removing Front Right Cover • 2 claws [3] •...
  • Page 171 Disassembly and Assembly > External-related Issues > Removing Front Right Cover(LBP7780C/LBP5480) > Removing Front Right Cover 3-24 Removing Front Right Cover(LBP7780C/LBP5480) ■ Before Removing Front Right Cover 1) Open the right cover unit. 2) Remove the control panel unit right cover.(Refer to page 3-14) 3)Remove the front cover unit(Refer to page 3-22) ■...
  • Page 172 Disassembly and Assembly > External-related Issues > Removing the Right Cover Unit 3-25 Removing the Right Cover Unit 2) Remove the front right cover [1]. 1) Open the right cover unit. • 2 screws [2] 2) Close the secondary transfer unit [1], and remove the cover [2]. •...
  • Page 173 Disassembly and Assembly > External-related Issues > Removing the Right Cover Unit(LBP7780C/5480) 3-26 Removing the Right Cover Unit(LBP7780C/5480) 4) Remove the right cover unit [1]. • 2 screws [2] 1) Open the right cover unit. • 2 connectors [3] 2) Close the secondary transfer unit [1], and remove the cover [2]. •...
  • Page 174 Disassembly and Assembly > Main Units > Removing ITB Unit 3-27 Main Units Removing ITB Unit 1) Open the right cover unit. Removing Secondary Transfer Unit 2) Press the arm [1] downward, and lift down the secondary transfer unit [2]. 1) Open the right cover unit.
  • Page 175 Disassembly and Assembly > Main Units > Removing Fixing Assembly 3-28 Removing Fixing Assembly 4) Pinch to the left and right grip [1], and remove the ITB unit [2]. Caution : Since the Fixing Assembly is in high temperature just after the power OFF, make sure to leave it until it cools down before remove it.
  • Page 176 Disassembly and Assembly > Main Units > Remove the Waste Toner Container(LBP7780C/LBP5480) 3-29 Removing Waste Toner Container Remove the Waste Toner Container(LBP7780C/ LBP5480) 1) Open the front cover unit. 2) Remove the waste toner container [1]. 1) Open the front cover unit. 2) Remove the waste toner container [1].
  • Page 177 Disassembly and Assembly > Main Units > Removing Waste Toner Full Sensor Unit > Removing the Waste Toner Full Sensor Unit 3-30 Removing Waste Toner Full Sensor Unit 2) Remove the waste toner full sensor unit [1]. • 1 screw [2] (tapping screw) ■...
  • Page 178 Disassembly and Assembly > Main Units > Removing Waste Toner Full Sensor Unit(LBP7780C/LBP5480) > Removing the Waste Toner Full Sensor Unit 3-31 Removing Waste Toner Full Sensor Unit(LBP7780C/ 2) Remove the waste toner full sensor unit [1]. • 1 screw [2] (tapping screw) LBP5480) •...
  • Page 179 Disassembly and Assembly > Main Units > Removing Waste Toner Feed Motor Unit > Removing Waste Toner Feed Motor Unit 3-32 Removing Waste Toner Feed Motor Unit 3) Remove 1 connector [1]. ■ Before Removing Waste Toner Feed Motor Unit 1) Remove the left cover.(Refer to page 3-11) 2) Remove the waste toner container.(Refer to page 3-29) ■...
  • Page 180 Disassembly and Assembly > Main Units > Removing Waste Toner Feed Motor Unit(LBP7780C/LBP5480) > Removing Waste Toner Feed Motor Unit 3-33 Removing Waste Toner Feed Motor Unit(LBP7780C/ 3) Remove 1 connector [1]. LBP5480) ■ Before Removing Waste Toner Feed Motor Unit 1) Remove the left cover.(Refer to page 3-11) 2) Remove the waste toner container.(Refer to page 3-29) ■...
  • Page 181 Disassembly and Assembly > Main Units > Removing Registration Unit > Removing Registration Unit 3-34 Removing Registration Unit 2) Remove the of the DC controller PCB. ■ Before Removing Registration Unit 1) Remove the secondary transfer unit.(Refer to page 3-27) 2) Remove the left cover.(Refer to page 3-11) 3) Remove the rear cover.(Refer to page 3-12) 4) Remove the right rear cover.(Refer to page 3-13)
  • Page 182 Disassembly and Assembly > Main Units > Removing Registration Unit(LBP7780C/LBP5480) > Removing Registration Unit 3-35 Removing Registration Unit(LBP7780C/LBP5480) 4) Open the feed guide [1]. • 2 claws [2] ■ Before Removing Registration Unit 1) Remove the secondary transfer unit.(Refer to page 3-27) 2) Remove the left cover.(Refer to page 3-11) 3) Remove the right rear cover.(Refer to page 3-13) 4) Remove the rear cover.(Refer to page 3-12)
  • Page 183 Disassembly and Assembly > Main Units > Removing Registration Unit(LBP7780C/LBP5480) > Removing Registration Unit 3-36 2)Remove the 2 connectors[1] from the DC controller PCB. 4) Open the feed guide [1]. • 2 claws [2] F-3-76 3) Remove the cover [1]. •...
  • Page 184 Disassembly and Assembly > Main Units > Removing Color Displacement/Density Sensor Unit > Removing Color Displacement/Density Sensor Unit 3-37 Removing Color Displacement/Density Sensor Unit 2) Remove the harness from the harness guide [1], and remove the color displacement/ density sensor unit [2]. ■...
  • Page 185 Disassembly and Assembly > Main Units > Removing Color Displacement/Density Sensor Unit(LBP7780C/5480) > Removing Color Displacement/Density Sensor Unit 3-38 Removing Color Displacement/Density Sensor 2)Remove the gear cover[1] • 2 screws [2] Unit(LBP7780C/5480) ■ Before Removing Color Displacement/Density Sensor Unit 1) Remove the secondary transfer unit.(Refer to page 3-27) 2) Remove the ITB unit.(Refer to page 3-27) 3) Remove the left cover.(Refer to page 3-11) 4) Remove the right rear cover.(Refer to page 3-13)
  • Page 186 Disassembly and Assembly > Main Units > Removing Lifter Drive Unit > Removing Lifter Drive Unit 3-39 Removing Lifter Drive Unit 2) Remove the lifter drive unit [1]. • 5 screws [2] ■ Before Removing Lifter Drive Unit • 1 claw [3] 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13)
  • Page 187 Disassembly and Assembly > Main Units > Removing Lifter Drive Unit(LBP7780C/LBP5480) > Removing Lifter Drive Unit 3-40 Removing Lifter Drive Unit(LBP7780C/LBP5480) 2)Remove the lifter drive unit [1]. • 5 screws [2] ■ Before Removing Lifter Drive Unit • 1 claw [3] 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13)
  • Page 188 Disassembly and Assembly > Main Units > Removing Laser Scanner Unit > Removing Y/M Laser Scanner Unit 3-41 Removing Laser Scanner Unit 2) Remove the cover [1]. • 1 screw [2] ■ Before Removing Laser Scanner Unit 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13) 4) Remove the ICB PCB.(Refer to page 3-101)
  • Page 189 Disassembly and Assembly > Main Units > Removing Laser Scanner Unit > Removing Y/M Laser Scanner Unit 3-42 4) Pull out and slide the Y/M Laser Scanner Unit [1] to the right and remove the left shaft [2] Points to note at installation : to remove the unit.
  • Page 190 Disassembly and Assembly > Main Units > Removing Laser Scanner Unit > Removing C/Bk Laser Scanner Unit 3-43 ■ Removing C/Bk Laser Scanner Unit 4) Remove the 2 screws [1] under the front cover unit. 1) Remove the Y/M laser scanner unit. 2) Remove the lifter drive unit.
  • Page 191 Disassembly and Assembly > Main Units > Removing Laser Scanner Unit > Removing C/Bk Laser Scanner Unit 3-44 6) Remove the cover [1]. 7) Remove the spring [1]. • 2 screws [2] • 1 claw [3] F-3-98 8) Remove the shaft [1] in the left side, remove the C/Bk scanner unit [2]. •...
  • Page 192 Disassembly and Assembly > Main Units > Removing Laser Scanner Unit(LBP7780C/LBP5480) > Removing Y/M Laser Scanner Unit 3-45 Removing Laser Scanner Unit(LBP7780C/LBP5480) Points to note at installation : ■ Before Removing Laser Scanner Unit • Make sure to adjust the position by inserting the protrusion [1] of Laser Scanner Unit into the frame hole [2].
  • Page 193 Disassembly and Assembly > Main Units > Removing Laser Scanner Unit(LBP7780C/LBP5480) > Removing Y/M Laser Scanner Unit 3-46 2)Remove the cover [1]. 4) Pull out and slide the Y/M Laser Scanner Unit [1] to the right and remove the left shaft [2] •...
  • Page 194 Disassembly and Assembly > Main Units > Removing Laser Scanner Unit(LBP7780C/LBP5480) > Removing C/Bk Laser Scanner Unit 3-47 ■ Removing C/Bk Laser Scanner Unit 1) Remove the Y/M laser scanner unit. Points to note at installation : 2) Remove the lifter drive unit. Make sure to adjust the position by inserting the protrusion [1] of Laser Scanner Unit 3) Remove the spring [1] and the flat cable.[2].
  • Page 195 Disassembly and Assembly > Main Units > Removing Laser Scanner Unit(LBP7780C/LBP5480) > Removing C/Bk Laser Scanner Unit 3-48 5)Open the front cover unit, and remove the cover [1]. Caution : • 1 screw [2] When removing/installing the cover [1], be careful of the arm [2] because it easily comes off.
  • Page 196 Disassembly and Assembly > Main Units > Removing Laser Scanner Unit(LBP7780C/LBP5480) > Removing C/Bk Laser Scanner Unit 3-49 8) Remove the shaft [1] in the left side, remove the C/Bk scanner unit [2]. Points to note at installation : • 1 connector [3] •...
  • Page 197 Disassembly and Assembly > Main Units > Removing Cassette Pickup Drive Unit > Removing Cassette Pickup Drive Unit 3-50 Removing Cassette Pickup Drive Unit ■ Before Removing Cassette Pickup Drive Unit(LBP7750C/ LBP5460) 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13) 4) Remove the ICB PCB.(Refer to page 3-101)
  • Page 198 Disassembly and Assembly > Main Units > Removing Cassette Pickup Drive Unit > Removing Cassette Pickup Drive Unit 3-51 2) Remove the harness guide [1] by sliding it. • 1 claw [2] F-3-116 REAR VIEW F-3-117 3) Remove the harness [1], and remove the harness guide [2] by sliding it in the direction of the arrow.
  • Page 199 Disassembly and Assembly > Main Units > Removing Cassette Pickup Unit > Removing Cassette Pickup Unit 3-52 Removing Cassette Pickup Unit 4) Remove the high-voltage PCB mount [1]. • 2 screws [2] ■ Before Removing Cassette Pickup Unit 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13) 4) Remove the secondary transfar unit.(Refer to page 3-27)
  • Page 200 Disassembly and Assembly > Main Units > Removing Cassette Pickup Unit(LBP7780C/LBP5480) > Removing Cassette Pickup Unit 3-53 Removing Cassette Pickup Unit(LBP7780C/LBP5480) 2) Remove the cassette pickup unit [1]. • 2 screws [2] ■ Before Removing Cassette Pickup Unit 1) Remove the left cover.(Refer to page 3-11) 2) Remove the right rear cover.(Refer to page 3-13) 3) Remove the rear cover.(Refer to page 3-12) 4) Remove the secondary transfar unit.(Refer to page 3-27)
  • Page 201 Disassembly and Assembly > Main Units > Removing Cassette Pickup Unit(LBP7780C/LBP5480) > Removing Cassette Pickup Unit 3-54 2) Remove the cassette pickup unit [1]. • 2 screws [2] F-3-124 3-54 Disassembly and Assembly > Main Units > Removing Cassette Pickup Unit(LBP7780C/LBP5480) > Removing Cassette Pickup Unit...
  • Page 202 Disassembly and Assembly > Main Units > Removing the Main Drive Unit > Removing the Main Drive Unit 3-55 Removing the Main Drive Unit 2) Remove the harness [1] and remove the high voltage contact point assembly [2]. ■ Before Removing the Main Drive Unit •...
  • Page 203 Disassembly and Assembly > Main Units > Removing the Main Drive Unit > Removing the Main Drive Unit 3-56 4) Remove the flat cable [1] from the harness guide[2]. 7) Remove the developing disengagement motor [1]. 5) Remove the harness guide [3]. •...
  • Page 204 Disassembly and Assembly > Main Units > Removing the Main Drive Unit > How to Check the Phase of Main Drive Unit Cam 3-57 ■ How to Check the Phase of Main Drive Unit Cam Points to note when installing the main drive unit : 1) Check the positions of 4 cams [1].
  • Page 205 Disassembly and Assembly > Main Units > Removing the Main Drive Unit(LBP7780C/LBP5480) > Removing the Main Drive Unit 3-58 Removing the Main Drive Unit(LBP7780C/LBP5480) 2) Remove the harness [1] and remove the high voltage contact point assembly [2]. • 1 screw [3] ■...
  • Page 206 Disassembly and Assembly > Main Units > Removing the Main Drive Unit(LBP7780C/LBP5480) > Removing the Main Drive Unit 3-59 4) Remove the flat cable [1] from the harness guide[2]. 7) Remove the developing disengagement motor [1]. 5) Remove the harness guide [3]. •...
  • Page 207 Disassembly and Assembly > Main Units > Removing the Main Drive Unit(LBP7780C/LBP5480) > How to Check the Phase of Main Drive Unit Cam 3-60 ■ How to Check the Phase of Main Drive Unit Cam Points to note when installing the main drive unit : 1) Check the positions of 4 cams [1].
  • Page 208 Disassembly and Assembly > Main Units > Removing the Fixing Drive Unit > Before Removing the Fixing Drive Unit 3-61 Removing the Fixing Drive Unit ■ Before Removing the Fixing Drive Unit 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the ITB unit.(Refer to page 3-27) 4) Remove the fixing assembly.(Refer to page 3-28)
  • Page 209 Disassembly and Assembly > Main Units > Removing the Fixing Drive Unit > Removing the Fixing Drive Unit 3-62 ■ Removing the Fixing Drive Unit 4) Remove the cover [1]. • 1 screw [2] 1) Remove the harness [1]. • 1 connector [2] 2) Remove the harness guide [3].
  • Page 210 Disassembly and Assembly > Main Units > Removing the Fixing Drive Unit(LBP7780C/LBP5480) > Removing the Fixing Drive Unit 3-63 Removing the Fixing Drive Unit(LBP7780C/LBP5480) ■ Removing the Fixing Drive Unit 1) Remove the harness [1]. ■ Before Removing the Fixing Drive Unit •...
  • Page 211 Disassembly and Assembly > Main Units > Removing the Delivery Unit > Before Removing the Delivery Unit 3-64 Removing the Delivery Unit 4) Remove the cover [1]. • 1 screw [2] ■ Before Removing the Delivery Unit 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the ITB unit.(Refer to page 3-27) 4) Remove the fixing assembly.(Refer to page 3-28)
  • Page 212 Disassembly and Assembly > Main Units > Removing the Delivery Unit > Removing the Delivery Unit 3-65 ■ Removing the Delivery Unit 3) Remove the gear [1]. • 1 claw [2] 1) Remove the guide [1]. • 2 screws [2] F-3-155 4) Turn and remove the shaft support [1].
  • Page 213 Disassembly and Assembly > Main Units > Removing the Delivery Unit(LBP7780C/LBP5480) > Before Removing the Delivery Unit 3-66 Removing the Delivery Unit(LBP7780C/LBP5480) 5) Remove the delivery unit [1]. • 1 connector [2] ■ Before Removing the Delivery Unit • 2 screws [3] 1) Remove the left cover.(Refer to page 3-11) Caution: 2) Remove the right rear cover.(Refer to page 3-13)
  • Page 214 Disassembly and Assembly > Main Units > Removing the Delivery Unit(LBP7780C/LBP5480) > Removing the Delivery Unit 3-67 ■ Removing the Delivery Unit 3) Remove the gear [1]. • 1 claw [2] 1) Remove the guide [1]. • 2 screws [2] F-3-161 4) Turn and remove the shaft support [1].
  • Page 215 Disassembly and Assembly > Main Units > Removing the Duplex Drive Unit > Before Removing the Duplex Drive Unit 3-68 Removing the Duplex Drive Unit 5) Remove the delivery unit [1]. • 1 connector [2] ■ Before Removing the Duplex Drive Unit •...
  • Page 216 Disassembly and Assembly > Main Units > Removing the Duplex Drive Unit(LBP7780C/LBP5480) > Before Removing the Duplex Drive Unit 3-69 Removing the Duplex Drive Unit(LBP7780C/LBP5480) ■ Removing the Duplex Drive Unit 1) Remove the duplex drive unit [1]. ■ Before Removing the Duplex Drive Unit •...
  • Page 217 Disassembly and Assembly > Main Units > Removing the Duplex Feed Roller Unit 3-70 Removing the Duplex Feed Roller Unit ■ Removing the Duplex Drive Unit 1) Remove the duplex drive unit [1]. 1) Open the right cover unit. • 2 connectors [2] 2) Remove the duplex feed guide [1].
  • Page 218 Disassembly and Assembly > Main Units > Removing the Multi-purpose Tray Pickup Unit > Removing the Multi-purpose Tray Pickup Unit 3-71 Removing the Duplex Feed Roller Unit(LBP7780C/ Removing the Multi-purpose Tray Pickup Unit LBP5480) ■ Before Removing the Multi-purpose Tray Pickup Unit 1) Open the right cover unit.
  • Page 219 Disassembly and Assembly > Main Units > Removing the Multi-purpose Tray Pickup Unit > Removing the Multi-purpose Tray Pickup Unit 3-72 3) Remove the 2 springs [1]. 5) Remove the shaft [1] from the shaft support [2] in 2 places and remove the feed unit cover [3].
  • Page 220 Disassembly and Assembly > Main Units > Removing the Multi-purpose Tray Pickup Unit > Removing the Multi-purpose Tray Pickup Unit 3-73 7) Remove the spring [1] and the gear [2]. 9) Disengage the plate [1] from the boss and slide the multi-purpose tray pickup unit [2] in the direction of the arrow.
  • Page 221 Disassembly and Assembly > Main Units > Removing the Multi-purpose Tray Pickup Unit (LBP7780C/LBP5480) > Removing the Multi-purpose Tray Pickup Unit 3-74 Removing the Multi-purpose Tray Pickup Unit 3) Remove the 2 springs [1]. (LBP7780C/LBP5480) ■ Before Removing the Multi-purpose Tray Pickup Unit 1) Remove the right cover unit.(Refer to page 3-25) ■...
  • Page 222 Disassembly and Assembly > Main Units > Removing the Multi-purpose Tray Pickup Unit (LBP7780C/LBP5480) > Removing the Multi-purpose Tray Pickup Unit 3-75 5) Remove the shaft [1] from the shaft support [2] in 2 places and remove the feed unit cover 7) Remove the spring [1] and the gear [2].
  • Page 223 Disassembly and Assembly > Main Units > Removing the Auto Close Unit(LBP7780C/LBP5480) > Removing the Auto Close Unit 3-76 Removing the Auto Close Unit(LBP7780C/LBP5480) 9) Disengage the plate [1] from the boss and slide the multi-purpose tray pickup unit [2] in the direction of the arrow.
  • Page 224 Disassembly and Assembly > Main Parts > Removing the Cassette Pickup Roller > Removing the Cassette Pickup Roller 3-77 Main Parts 4) Shift it upward and remove the Cassette Pickup Roller [1]. Removing the Cassette Pickup Roller ■ Before Removing the Cassette Pickup Roller 1) Open the Front Cover Unit.
  • Page 225 Disassembly and Assembly > Main Parts > Removing the Cassette Pickup Roller(LBP7780C/LBP5480) > Removing the Cassette Pickup Roller 3-78 Removing the Cassette Pickup Roller(LBP7780C/ 4) Shift it upward and remove the Cassette Pickup Roller [1]. LBP5480) ■ Before Removing the Cassette Pickup Roller 1) Open the Front Cover Unit.
  • Page 226 Disassembly and Assembly > Main Parts > Removing the Power Fan > Removing the Power Fan 3-79 Removing the Cassette Separation Roller Assembly Removing the Power Fan ■ Before Removing the Power Fan 1) Remove the cassette. 1) Remove the left cover.(Refer to page 3-11) Caution : 2) Remove the rear cover.(Refer to page 3-12) Do not touch the roller surface [1] of the cassette separation roller assembly.
  • Page 227 Disassembly and Assembly > Main Parts > Removing the Power Fan > Removing the Power Fan 3-80 2) Remove the 6 connectors [1]. 4) Remove the connector [1] and the screw [2]. F-3-199 F-3-201 3) Remove the harness [2] from the harness guide [1]. 5) Remove the power fan [1].
  • Page 228 Disassembly and Assembly > Main Parts > Removing the Power Fan(LBP7780C/LBP5480) > Removing the Power Fan 3-81 Removing the Power Fan(LBP7780C/LBP5480) 2) Remove the 6 connectors [1]. ■ Before Removing the Power Fan 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13) ■...
  • Page 229 Disassembly and Assembly > Main Parts > Removing the Fan Unit > Removing the Fan Unit 3-82 Removing the Fan Unit 4) Remove the connector [1] and the screw [2]. ■ Before Removing the Fan Unit 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13) 4) Remove the ICB PCB.(Refer to page 3-101)
  • Page 230 Disassembly and Assembly > Main Parts > Removing the Fan Unit > Removing the Fan Unit 3-83 2) Remove the plate [1]. 4) Slide the fan unit [1] in the direction of the arrow and remove it. • 4 screws [2] •...
  • Page 231 Disassembly and Assembly > Main Parts > Removing the Fan Unit(LBP7780C/LBP5480) > Removing the Fan Unit 3-84 Removing the Fan Unit(LBP7780C/LBP5480) 2) Remove the plate [1]. • 4 screws [2] ■ Before Removing the Fan Unit 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13) 4) Remove the main controller PCB.(Refer to page 3-101)
  • Page 232 Disassembly and Assembly > Main Parts > Removing the Developing Disengagement Motor > Removing the Developing Disengagement Motor 3-85 Removing the Developing Disengagement Motor 4) Slide the fan unit [1] in the direction of the arrow and remove it. • 2 claws [2] ■...
  • Page 233 Disassembly and Assembly > Main Parts > Removing the Secondary Transfer Outer Roller Unit 3-86 Removing the Developing Disengagement Removing the Secondary Transfer Outer Roller Unit Motor(LBP7780C/LBP5480) Caution : ■ Before Removing the Developing Disengagement Motor Do not touch the roller surface [1] of the secondary transfer outer roller. 1) Remove the left cover.(Refer to page 3-11) 2) Remove the right rear cover.(Refer to page 3-13) 3) Remove the rear cover.(Refer to page 3-12)
  • Page 234 Disassembly and Assembly > Main Parts > Removing the Pickup Motor > Removing the Pickup Motor 3-87 Removing the Pickup Motor 3) Hold the both sides [1] of the Secondary Transfer Outer Roller Unit and remove it in the direction of the arrow. ■...
  • Page 235 Disassembly and Assembly > Main Parts > Removing the Pickup Motor(LBP7780C/LBP5480) > Removing the Pickup Motor 3-88 Removing the Pickup Motor(LBP7780C/LBP5480) 2) Remove the pickup motor [1]. • 2 screws [2] ■ Before Removing the Pickup Motor • 1 connector [3] 1) Remove the left cover.(Refer to page 3-11) 2) Remove the right rear cover.(Refer to page 3-13) 3) Remove the rear cover.(Refer to page 3-12)
  • Page 236 Disassembly and Assembly > Main Parts > Removing the Drum Motor 1(LBP7780C/LBP5480) > Removing the Drum Motor 1 3-89 Removing the Drum Motor 1 Removing the Drum Motor 1(LBP7780C/LBP5480) ■ Before Removing the Drum Motor 1 ■ Before Removing the Drum Motor 1 1) Remove the left cover.(Refer to page 3-11) 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12)
  • Page 237 Disassembly and Assembly > Main Parts > Removing the Drum Motor 2(LBP7780C/LBP5480) > Removing the Drum Motor 2 3-90 Removing the Drum Motor 2 Removing the Drum Motor 2(LBP7780C/LBP5480) ■ Before Removing the Drum Motor 2 ■ Before Removing the Drum Motor 2 1) Remove the left cover.(Refer to page 3-11) 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12)
  • Page 238 Disassembly and Assembly > Main Parts > Removing the Drum Motor 3(LBP7780C/LBP5480) > Removing the Drum Motor 3 3-91 Removing the Drum Motor 3 Removing the Drum Motor 3(LBP7780C/LBP5480) ■ Before Removing the Drum Motor 3 ■ Before Removing the Drum Motor 3 1) Remove the left cover.(Refer to page 3-11) 1)Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12)
  • Page 239 Disassembly and Assembly > Main Parts > Removing the Fixing Motor(LBP7780C/LBP5480) > Removing the Fixing Motor 3-92 Removing the Fixing Motor Removing the Fixing Motor(LBP7780C/LBP5480) ■ Before Removing the Fixing Motor ■ Before Removing the Fixing Motor 1) Remove the left cover.(Refer to page 3-11) 1)Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 2) Remove the right rear cover.(Refer to page 3-13)
  • Page 240 Disassembly and Assembly > Main Parts > Removing the Delivery Fan > Removing the Delivery Fan 3-93 Removing the Delivery Fan 2) Remove the delivery fan [1]. • 1 connector [2] ■ Before Removing the Delivery Fan 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13) 4) Remove the ICB PCB.(Refer to page 3-101)
  • Page 241 Disassembly and Assembly > Main Parts > Removing the Delivery Fan(LBP7780C/LBP5480) > Removing the Delivery Fan 3-94 Removing the Delivery Fan(LBP7780C/LBP5480) 2) Remove the delivery fan [1]. • 1 connector [2] ■ Before Removing the Delivery Fan 1)Remove the left cover.(Refer to page 3-11) 2) Remove the right rear cover.(Refer to page 3-13) 3) Remove the rear cover.(Refer to page 3-12) 4) Remove the main controller PCB.(Refer to page 3-101)
  • Page 242 Disassembly and Assembly > Main Parts > Removing the Cartridge Fan > Removing the Cartridge Fan 3-95 Removing the Cartridge Fan 2) Remove the cartridge fan [1]. • 1 connector [2] ■ Before Removing the Cartridge Fan 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13) 4) Remove the ICB PCB.(Refer to page 3-101)
  • Page 243 Disassembly and Assembly > Main Parts > Removing the Cartridge Fan(LBP7780C/LBP5480) > Removing the Cartridge Fan 3-96 Removing the Cartridge Fan(LBP7780C/LBP5480) Remove the cartridge fan [1]. • 1 connector [2] 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13) 4) Remove the main controller PCB.(Refer to page 3-101) 5) Remove the low voltage power unit.(Refer to page 3-109)
  • Page 244 Disassembly and Assembly > Main Parts > Removing the Multi-purpose Tray Pickup Roller 3-97 Removing the Multi-purpose Tray Pickup Roller 3) Open the pickup roller retainer [1] to the right and left and remove the multi-purpose tray pickup roller [2] in the direction of the arrow. Caution : Do not touch the roller surface [1] of the multi-purpose tray pickup roller.
  • Page 245 Disassembly and Assembly > Main Parts > Removing the Multi-purpose Tray Separation Pad 3-98 Removing the Multi-purpose Tray Separation Pad 3) Insert the precision screwdriver into the clearance [2] of the multi-purpose tray separation pad [1]. Turn the precision screwdriver and remove the multi-purpose tray separation pad [1] from the multi-purpose tray separation pad holder [3].
  • Page 246 Disassembly and Assembly > Main Parts > Removing the Controller Fan > Removing the Controller Fan 3-99 Removing the Controller Fan Points to note when installing the parts : ■ Before Removing the Controller Fan At installation, make sure to insert the protrusion [2] on the back of [1] into the hole of the multi-purpose tray separation pad holder [3].
  • Page 247 Disassembly and Assembly > Main Parts > Removing the Controller Fan > Removing the Controller Fan 3-100 2) Remove the plate [1]. Points to note at installation : • 1 connector [2] When installing the controller fan, be careful of the installation direction. •...
  • Page 248 Disassembly and Assembly > PCB-related Issures > Removing the Main Controller PCB 3-101 PCB-related Issures Removing the Main Controller PCB Setting values and management data of this machine are memorized in the NVRAM (IC475) Removing the ICB PCB on the main controller PCB. When replacing the main controller PCB, be sure to remove the NVRAM (IC475) from the old ■...
  • Page 249 Disassembly and Assembly > PCB-related Issures > Removing the Main Controller PCB 3-102 • Turn ON the power. • "Panel Language" is displayed. • When turning ON the power, "NVRAM export" is displayed on the Control Panel. • Here, select your own language. •...
  • Page 250 Disassembly and Assembly > PCB-related Issures > Removing the Main Controller PCB 3-103 3-3 Backing up data kept by the NVRAM of the DC Controller PCB to the Main Controller For details on backup to Sublog Board attached with the Expansion ROM, refer to the Service Manual >...
  • Page 251 Disassembly and Assembly > PCB-related Issures > Removing the Main Controller PCB > Removing the Main Controller PCB 3-104 2-1-2 Backup to USB memory • Turn ON the power. • Connect the USB memory to the host machine. • The equipment is started and can be used normally. •...
  • Page 252 Disassembly and Assembly > PCB-related Issures > Removing the Main Controller PCB > Removing the Main Controller PCB 3-105 2) Remove the harness [1]. MEMO : • 7 connectors [2] SW4(push SW) is not used for service use. • 1 flat cable [3] The jumper connector is installed on JP7 as follows.
  • Page 253 Disassembly and Assembly > PCB-related Issures > Removing the Main Controller PCB > Removing the Main Controller PCB(LBP7780C/LBP5480) 3-106 2)Remove the 7 connectors[1] and flat cable[2] ■ Before Removing the Main Controller PCB(LBP7780C/ LBP5480) 1)Remove the left cover.(Refer to page 3-11) 2) Remove the right rear cover.(Refer to page 3-13) 3)Remove the rear cover(Refer to page 3-12) ■...
  • Page 254 Disassembly and Assembly > PCB-related Issures > Removing the ALL NIGHT PCB(LBP7780C/LBP5480) > Removing the ALL NIGHT PCB 3-107 Removing the RELAY PCB(LBP7780C/LBP5480) Removing the ALL NIGHT PCB(LBP7780C/LBP5480) ■ Before Removing the RELAY PCB ■ Before Removing the ALL NIGHT PCB 1)Remove the left cover.(Refer to page 3-11) 1)Remove the left cover.(Refer to page 3-11) 2) Remove the right rear cover.(Refer to page 3-13)
  • Page 255 Disassembly and Assembly > PCB-related Issures > Removing the SD CARD PCB(LBP7780C/LBP5480) > Before Removing the SD CARD PCB 3-108 Removing the SLEEP IF PCB(LBP7780C/LBP5480) ■ Before Removing the SLEEP IF PCB 1)Remove the left cover.(Refer to page 3-11) 2) Remove the right rear cover.(Refer to page 3-13) 3)Remove the rear cover(Refer to page 3-12) ■...
  • Page 256 Disassembly and Assembly > PCB-related Issures > Removing the Low Voltage Power Unit > Removing the Low Voltage Power Unit 3-109 Removing the Low Voltage Power Unit 2)Remove the SD CARD PCB bracket and remove the SD CARD PCB[1]. ■ Before Removing the Low Voltage Power Unit •...
  • Page 257 Disassembly and Assembly > PCB-related Issures > Removing the Low Voltage Power Unit > Removing the Low Voltage Power Unit 3-110 2) Remove the cable from the 2 wire saddles [1]. 5) Remove the plate [1]. 3) Remove the reuse band [2]. •...
  • Page 258 Disassembly and Assembly > PCB-related Issures > Removing the Low Voltage Power Unit(LBP7780C/LBP5480) > Removing the Low Voltage Power Unit 3-111 Removing the Low Voltage Power Unit(LBP7780C/ 7) Remove the controller mount [1]. • 8 screws [2] LBP5480) ■ Before Removing the Low Voltage Power Unit 1)Remove the left cover.(Refer to page 3-11) 2) Remove the right rear cover.(Refer to page 3-13) 3)Remove the rear cover(Refer to page 3-12)
  • Page 259 Disassembly and Assembly > PCB-related Issures > Removing the Low Voltage Power Unit(LBP7780C/LBP5480) > Removing the Low Voltage Power Unit 3-112 2)Remove the RELAY/ALL NIGHT PCB[1] 4)Remove the plate[1] • 4 connectors[2] • 2 screws[2] • 3 screws[3] • 4 hooks[3] •...
  • Page 260 Disassembly and Assembly > PCB-related Issures > Removing the DC Controller PCB > Removing the DC Controller PCB 3-113 Removing the DC Controller PCB 6)Remove the Low Voltage Power Unit[1]. • 3 screws[2] Information of the NVRAM mounted on the DC controller PCB is saved in the NVRAM on the •...
  • Page 261 Disassembly and Assembly > PCB-related Issures > Removing the DC controller PCB(LBP7780C/LBP5480) > Removing the DC Controller PCB 3-114 Removing the DC controller PCB(LBP7780C/LBP5480) 2) Remove all the connectors on the DC controller PCB. • 23 connectors • 5 flat cables NVRAM information on the DC Controller PCB is stored in the NVRAM on the Main Controller 3) Remove the DC controller PCB [1].
  • Page 262 Disassembly and Assembly > PCB-related Issures > Removing the Lower High Voltage Power Supply PCB > Removing the Lower High Voltage Power Supply PCB 3-115 Removing the Lower High Voltage Power Supply PCB ■ Before Removing the Lower High Voltage Power Supply PCB 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13)
  • Page 263 Disassembly and Assembly > PCB-related Issures > Removing the Lower High Voltage Power Supply PCB > Removing the Lower High Voltage Power Supply PCB 3-116 2) Remove the connector [1] and the flat cable.[2] 4) Remove the lower high voltage power supply PCB.[1] •...
  • Page 264 Disassembly and Assembly > PCB-related Issures > Removing the Lower High Voltage Power Supply PCB(LBP7780C/LBP5480) > Removing the Lower High Voltage Power Supply PCB 3-117 Removing the Lower High Voltage Power Supply Note at installation : PCB(LBP7780C/LBP5480) When installing the lower high voltage power supply PCB [1] to the host machine, make sure that the contact spring [3] contacts with outline of holes from the 18 round holes [2].
  • Page 265 Disassembly and Assembly > PCB-related Issures > Removing the Lower High Voltage Power Supply PCB(LBP7780C/LBP5480) > Removing the Lower High Voltage Power Supply PCB 3-118 2) Remove the connector [1] and the flat cable.[2] 4) Remove the lower high voltage power supply PCB.[1] •...
  • Page 266 Disassembly and Assembly > PCB-related Issures > Removing the Upper High Voltage Power Supply PCB > Removing the Upper High Voltage Power Supply PCB 3-119 Removing the Upper High Voltage Power Supply PCB ■ Before Removing the Upper High Voltage Power Supply PCB Note at installation : When installing the lower high voltage power supply PCB [1] to the host machine, make 1) Remove the left cover.(Refer to page 3-11)
  • Page 267 Disassembly and Assembly > PCB-related Issures > Removing the Upper High Voltage Power Supply PCB > Removing the Upper High Voltage Power Supply PCB 3-120 4) Remove the upper high voltage power supply PCB [1]. • 3 screws [2] • 3 claws [3] RIGHT VIEW F-3-299 Caution :...
  • Page 268 Disassembly and Assembly > PCB-related Issures > Removing the Upper High Voltage Power Supply PCB(LBP7780C/LBP5480) > Removing the Upper High Voltage Power Supply PCB 3-121 Removing the Upper High Voltage Power Supply 2)Remove all the controllers. • 23 connectors PCB(LBP7780C/LBP5480) •...
  • Page 269 Disassembly and Assembly > PCB-related Issures > Removing the Environment Sensor > Removing the Environment Sensor 3-122 Removing the Environment Sensor 4) Remove the upper high voltage power supply PCB [1]. • 3 screws [2] ■ Before Removing the Environment Sensor •...
  • Page 270 Disassembly and Assembly > PCB-related Issures > Removing the Environment Sensor(LBP7780C/LBP5480) > Removing the Environment Sensor 3-123 Removing the Environment Sensor(LBP7780C/ LBP5480) ■ Before Removing the Environment Sensor 1) Remove the left cover.(Refer to page 3-11) 2) Remove the rear cover.(Refer to page 3-12) 3) Remove the right rear cover.(Refer to page 3-13) 4) Remove the main controller PCB.(Refer to page 3-106) 5) Remove the low voltage power unit.(Refer to page 3-111)
  • Page 271 Maintenance and Inspection ■ Periodically Replaced Parts ■ Consumable Parts ■ Periodical Service ■ Cleaning Maintenance and Inspection...
  • Page 272 Maintenance and Inspection > Periodical Service > Periodical Service Periodically Replaced Parts Periodical Service Periodically Replaced Parts Periodical Service No periodically replaced parts exist in this machine. No periodical service is needed for this machine. Consumable Parts Consumable Parts Replaced by Users There is a possibility that replacement of parts is needed due to deterioration or damage at least more than once during the product's warranty period.
  • Page 273 Maintenance and Inspection > Cleaning > Cleaning Item Cleaning [1] [2] Cleaning Item Performed by Area to be cleaned Cleaning procedure User Fixing sleeve Execute "Utility > Cleaning". User Outside of the printer, Vent Wring the water out of a soft cloth moistened with water or watered-down mild detergent, and remove dirt with it.
  • Page 274 Troubleshooting ■ Corrective Actions ■ Standard/Adjustment ■ Outline of Electrical Components ■ Connector Layout Drawing ■ Service Tools ■ Error Code ■ Version Up ■ Service Mode ■ Debug Log ■ Backup/Restoration by Expansion ROM for servicing and Sublog Board Troubleshooting...
  • Page 275 Troubleshooting > Corrective Actions > Image Failure > Low Density (2) Corrective Actions ■ Low Density (2) The density of all specific colors in the printed image is obviously low. Image Failure ■ Low Density (1) The density of the entire printed image is obviously low.
  • Page 276 Troubleshooting > Corrective Actions > Image Failure > Polka-dot Pattern ■ High Density ■ Coal-black/Solid Color Image The density of printed image is obviously high. An inky-black or solid color image is printed. F-5-3 F-5-5 Cause Action Cause Action 1) Failure in the color displacement/density Replace the color displacement/density sensor unit.
  • Page 277 Troubleshooting > Corrective Actions > Image Failure > White Vertical Line (2) ■ Dirt on the Backside ■ White Vertical Line (1) Dirt is attached on the backside of the paper. White vertical lines are printed in a specific color. F-5-7 Cause Action...
  • Page 278 Troubleshooting > Corrective Actions > Image Failure > Dropout of a Specific Color ■ Horizontal Line ■ Dropout of a Specific Color Horizontal lines are printed. F-5-11 F-5-13 An image is printed in which a specific color is dropped. Cause Action Cause Action...
  • Page 279 Troubleshooting > Corrective Actions > Image Failure > Color Displacement ■ White Patch ■ Color Displacement An image with white patches is printed. An image in which color is displaced is printed. F-5-14 F-5-16 Cause Action Cause Action 1) Deformation/deterioration of the secondary Replace the secondary transfer outer roller.
  • Page 280 Troubleshooting > Corrective Actions > Image Failure > Skewed Image ■ Image Trouble ■ Wrinkle/Bend at the Leading Edge A fading image or trouble image is printed. There is wrinkle or bend at the leading edge of the delivered paper. F-5-19 F-5-17 Cause...
  • Page 281 Troubleshooting > Corrective Actions > Image Failure > Interval of Dirt or White Patches on the Image ■ Dirt Dirt is attached on the printing surface. F-5-21 Cause Action 1) Dirt on the photosensitive drum Replace the cartridge. 2) Dirt on the fixing sleeve/pressure roller Execute pressure roller cleaning specification in the multi-purpose mode.
  • Page 282 Troubleshooting > Standard/Adjustment > Test Print > Engine Test Print Standard/Adjustment Test Print ■ Engine Test Print A test print is performed to check whether this machine operates correctly or not. For the test print, two types of test print are performed; an engine test print and a controller test print. When a failure occurs in this machine, a printer failure can be identified by performing the test print.
  • Page 283 Troubleshooting > Standard/Adjustment > Adjustment of the Fixing Assembly > Checking the Pressure Volume (Nip Volume) of the Pressure Roller 5-10 Adjustment of the Image Formation System Adjustment of the Fixing Assembly ■ When Replacing the ITB Unit ■ When Replacing the Fixing Assembly Clear the counter value using the following service mode after replacing the ITB.
  • Page 284 Troubleshooting > Standard/Adjustment > Adjustment of Electrical Parts > Replacing the Main Controller PCB 5-11 Adjustment of Electrical Parts ■ When Replacing the DC Controller PCB Information of the NVRAM mounted on the DC controller PCB is saved in the NVRAM on the Paper feed direction Center of main controller PCB.
  • Page 285 Troubleshooting > Standard/Adjustment > Adjustment of Electrical Parts > Replacing the Main Controller PCB 5-12 However, when the Main Controller PCB cannot operate normally because of flash memory • When the menu is displayed on the Control Panel upon turning ON the power, select failure or system error, the above data cannot be backed up.
  • Page 286 Troubleshooting > Standard/Adjustment > Adjustment of Electrical Parts > Replacing the Main Controller PCB 5-13 NOTE after replacing the Main Controller PCB. When you execute Setup Menu>SERVIVE MODE>FUNCTION Setting values of this machine: User mode setting values, service mode setting values GR.>ECONF>EXPORT>ALL>Yes upon backup of data by the USB memory, information Management data of this machine: Page counter, device serial number kept by NVRAM on the DC Controller PCB is also backed up.
  • Page 287 Troubleshooting > Standard/Adjustment > Adjustment of Electrical Parts > Replacing the Main Controller PCB 5-14 • Install the Sublog Board attached with the Expansion ROM to the Main Controller PCB. • Connect the USB memory to the host machine. 1-3 Restoring data after replacing the PCB •...
  • Page 288 Troubleshooting > Outline of Electrical Components > Sensor 5-15 Outline of Electrical Components Sensor SR15 SR14 SR11 SR17 SR13 SR10 SR22 SR20 SR21 Symbol Parts name Symbol Parts name F-5-26 Fixing delivery sensor SR17 Primary transfer roller disengagement Symbol Parts name Symbol Parts name sensor...
  • Page 289 Troubleshooting > Outline of Electrical Components > Clutch/Solenoid 5-16 Motor Clutch/Solenoid F-5-27 F-5-28 Symbol Parts name Symbol Parts name Fixing motor Duplex re-pickup clutch Drum motor 1 Primary transfer roller disengagement solenoid Drum motor 2 Duplex reverse solenoid Drum motor 3 Multi-purpose tray pickup solenoid Lifter motor Cassette pickup solenoid...
  • Page 290 Troubleshooting > Outline of Electrical Components > LED/Heater/Thermistor/Switch 5-17 LED/Heater/Thermistor/Switch LED5 LED6 LED7 LED1 LED8 LED2 LED3 LED4 F-5-29 Symbol Parts name Power supply fan F-5-30 Cartridge fan Symbol Parts name Symbol Parts name Delivery fan LED1 Front side pre-exposure LED 1 Sleeve thermistor Controller fan (Not supported by LBP7780C)
  • Page 291 Troubleshooting > Outline of Electrical Components > PCB 5-18 LBP7780C/LBP5480 UN44 LBP7750C/LBP5460 UN37 UN36 UN40 UN43 UN41 UN35 UN40 UN42 UN10 UN10 F-5-32 Symbol Parts name Low-voltage power supply PCB Upper high-voltage power supply PCB F-5-31 Symbol Parts name Lower high-voltage power supply PCB DC controller PCB Low-voltage power supply PCB Bk toner sensor PCB...
  • Page 292 Troubleshooting > Outline of Electrical Components > PCB 5-19 Symbol Parts name Low-voltage power supply PCB Upper high-voltage power supply PCB UN23 Lower high-voltage power supply PCB DC controller PCB Bk toner sensor PCB Y toner sensor PCB M toner sensor PCB UN12 UN10 C toner sensor PCB...
  • Page 293 Troubleshooting > Outline of Electrical Components > PCB 5-20 UN49 UN50 UN30 UN39 UN47 UN48 UN46 UN45 F-5-34 Symbol Parts name UN30 Waste toner full level sensor PCB UN39 Control panel PCB UN45 Color displacement/density sensor PCB 1 UN46 Color displacement/density sensor PCB 2 UN47 OHT IN(LBP7780C/LBP5480 only) UN48...
  • Page 294 Troubleshooting > Connector Layout Drawing > Connector List(LBP7750C/LBP5460) 5-21 Connector Layout Drawing Connector List(LBP7750C/LBP5460) J118 J262 J90 J85 J501 J503 J780 J130 J701 J351 J350 J702 J352 F-5-36 F-5-35 5-21 Troubleshooting > Connector Layout Drawing > Connector List(LBP7750C/LBP5460)
  • Page 295 Troubleshooting > Connector Layout Drawing > Connector List(LBP7750C/LBP5460) 5-22 Main controller J304 J143 J100 J101 DC controller J116 J201 J202 (J70) J262 J114 (J261) J119 J261 J251 F-5-38 F-5-37 5-22 Troubleshooting > Connector Layout Drawing > Connector List(LBP7750C/LBP5460)
  • Page 296 Troubleshooting > Connector Layout Drawing > Connector List(LBP7780C/LBP5480) 5-23 Connector List(LBP7780C/LBP5480) J126 J117 J106 J110 J111 J501 J503 J112 J139 J115 J4 J81 J3 J350 J351 F-5-39 J352 F-5-40 5-23 Troubleshooting > Connector Layout Drawing > Connector List(LBP7780C/LBP5480)
  • Page 297 Troubleshooting > Connector Layout Drawing > Connector List(LBP7780C/LBP5480) 5-24 J600 J100 J101 J118 J137 J108 J107 J200 J201 J262 J116 J123 J113 J114 J130 J119 J109 J138 J122 J510 J701 J702 J250 J251 J511 F-5-41 F-5-42 5-24 Troubleshooting > Connector Layout Drawing > Connector List(LBP7780C/LBP5480)
  • Page 298 Troubleshooting > Connector Layout Drawing > Connector List(LBP7780C/LBP5480) 5-25 J126 J120 J127 J121 J202 J131 J261 J121 J141 J140 F-5-44 F-5-43 5-25 Troubleshooting > Connector Layout Drawing > Connector List(LBP7780C/LBP5480)
  • Page 299 Troubleshooting > Connector Layout Drawing > Connector List(LBP7780C/LBP5480) 5-26 J110CNT J1SD J4CNT J120 J1501 J1504 J105 J2801 J2803 J1211 J1502 J1506 J1507 J1201 J1505 J1003 F-5-45 5-26 Troubleshooting > Connector Layout Drawing > Connector List(LBP7780C/LBP5480)
  • Page 300 Troubleshooting > Service Tools > List of Solvents/Greases 5-27 Service Tools Special Tools Tool name Tool No. Purpose/Remarks Standard Tools Expansion ROM for FM0-2725 • Backup/Restoration by Expansion servicing ROM for servicing and Sublog Board Sublog Board FM0-1774 • Backup/Restoration by Expansion Tool name Tool No.
  • Page 301 Troubleshooting > Error Code > Error Code Details 5-28 Error Code Code Detection details Action E012 0003 Yellow drum motor error (Failure in drum • Check the contact of the connector motor rotation) between the drum motor (J515) and Error Code Details The motor rotated out of the target speed the DC controller PCB (J81).
  • Page 302 Troubleshooting > Error Code > Error Code Details 5-29 Code Detection details Action Code Detection details Action 0000 Fixing motor startup error • Check the contact of the connector 0002 Cassette 2 lift up motor error • Reconnect the connector J2003 on The target speed was not reached within between the fixing motor (J516) and the paper feeder driver PCB and the...
  • Page 303 Troubleshooting > Error Code > Error Code Details 5-30 Code Detection details Action Code Detection details Action 0000 Optical assembly error (Scanner motor • Check the contact of the connector E198 DC controller memory failure initial operation failure) between the laser scanner unit and 0000 •...
  • Page 304 Troubleshooting > Error Code > Error Code Details 5-31 Code Detection details Action Code Detection details Action 0008 1602 File system initialization error Execute the following procedures. 1. Turn OFF and then ON the power. 0009 2. Download the /APL_CDS firmware 1102 Error detection of file system Execute the following procedures.
  • Page 305 Troubleshooting > Error Code > Error Code Details 5-32 Code Detection details Action Code Detection details Action 0001 Printer communication error (Invalid • Turn on the power again. 0003 Controller fan failure detected Replace the controller fan. communication after communication is •...
  • Page 306 Troubleshooting > Error Code > Jam Code 5-33 Jam Code Code Detection details Action 0004 OHT sensor failure warning Jam code E840 Pressure release mechanism failure Cause Jammed paper position Upper digits Lower digits 0000 The target pressure position was •...
  • Page 307 Troubleshooting > Error Code > Alarm Code 5-34 Alarm Code Location code/ Location Alarm code/ Description LEVEL Remarks FFFF 05 Transfer System, Copier 0001 LBP7780C/ LBP5480 06 Fixing System, Copier 0002 Fixing upper Fixing upper not supported roller alarm roller alarm 11 Drum Cleaner System, 0001 Waste toner Waste toner...
  • Page 308 Troubleshooting > Version Up > Preparation > Necessary System Environment 5-35 Version Up Preparation ■ Necessary System Environment Overview • OS (Any of the following) ■ Overview of Upgrading • Microsoft Windows 2000 Server/Professional Japanese Edition • Microsoft Windows XP Professional/Home Edition Japanese Edition* Upgrading is performed by downloading firmware from a personal computer (hereinafter •...
  • Page 309 Troubleshooting > Version Up > Downloading the System Software > Downloading the System 5-36 Downloading the System Software ■ Before Downloading the System Software 1) Start up the PC. ■ Downloading the System 2) Connect the host machine and the PC with a USB cable. ●...
  • Page 310 Troubleshooting > Version Up > Downloading the System Software > Downloading the System 5-37 3) Click the "Next" button. 5) Click the "Start" button. F-5-49 F-5-51 4) Select the USB connection device, and click the "Next" button. 6) When the warning screen is displayed, click the "Yes" button. F-5-52 F-5-50 F-5-53...
  • Page 311 Troubleshooting > Version Up > Downloading the System Software > Downloading the System 5-38 7) When downloading is completed, click the "OK" button. The host machine automatically restarts up. F-5-54 8) Perform common status print via the user mode, and make sure that the firmware version matches the information written down in Procedure 2).
  • Page 312 Troubleshooting > Service Mode > Service Mode List(LBP7750C/LBP5460) > OPTION GR. 5-39 Service Mode ■ OPTION GR. Item Description Setting range Service Mode List(LBP7750C/LBP5460) B4-L-CNT Set to determine B4 size to be large size or small size. ON / OFF •...
  • Page 313 Troubleshooting > Service Mode > Service Mode List(LBP7750C/LBP5460) > F/W UPDATE GR. 5-40 ■ FUNCTION GR. ■ LOG GR. Item Description Setting range Item Description Setting range ECONF EXPORT Export the device setting data. GENERAL/ SYSTEM LOG Make a setting of the system log function. / OFF DEPEND/ SUBLOG FTP GET Sub log is collected without using the serial consol.
  • Page 314 SNMP search broadcast packet is not provided. When any error occurs, the time, error code and error 3: Wake Up function using the old Canon utility is information are displayed. Up to 5 logs can be stored and enabled. Wake Up function with the new protocol the latest log is displayed.
  • Page 315 Troubleshooting > Service Mode > Service Mode List(LBP7780C/LBP5480) > ADJUST GR. 5-42 Service Mode List(LBP7780C/LBP5480) ■ SP.ADMIN.MODE Item Description Setting range ■ COUNTER GR. MAINTENANCE This item is displayed only when “Maintenance Code” is ---- not set. By entering the Maintenance Code here, the menu Item Description Setting range...
  • Page 316 Troubleshooting > Service Mode > Service Mode List(LBP7780C/LBP5480) > FUNCTION GR. 5-43 ■ OPTION GR. ■ FUNCTION GR. Item Description Setting range Item Description Setting range LONG SLEEP • To set long sleep time. 0 to 8 to 24 ECONF EXPORT Export the device setting data.
  • Page 317 Troubleshooting > Service Mode > Service Mode List(LBP7780C/LBP5480) > F/W UPDATE GR. 5-44 ■ LOG GR. Item Description Setting range MEAP MEAP-PN To specify the port number of MEAP 0 to 8000* to Item Description Setting range HTTP. 65535 SYSTEM LOG Make a setting of the system log function.
  • Page 318 • ON: Embedded-RDS is used. search broadcast packet is not provided. • OFF: Embedded-RDS is not used. 3: Wake Up function using the old Canon utility is enabled. RGW- URL can be checked and set here. For the URL ----...
  • Page 319 Troubleshooting > Service Mode > Service Mode List(LBP7780C/LBP5480) > SP.ADMIN.MODE 5-46 Item Description Setting range EAPOL_WT Time to wait for a response (or the next request) to 10 to 30 to 120 EAPOL packet sent by the device T-5-54 ■ SP.ADMIN.MODE Item Description Setting range...
  • Page 320 • When the error is suspected of links with firmware rather than a mechanical/electrical failure. • Collection of Sublog is not necessary when the reproduction procedure is identified and the error can be reproduced by the sales company HQ or the Canon staff who is in charge of quality follow-up. 5-47...
  • Page 321 Troubleshooting > Debug log > Collecting Sublog > Installing the Sublog Board 5-48 Collecting Sublog 1) Remove the cover on the right side of the host machine. ■ Flow of collecting Sublog Installing the Sublog Board Install the board to the host machine. Generating the log When the Sublog Board is installed, it records the log all time.
  • Page 322 Troubleshooting > Debug log > Collecting Sublog > Collecting log 5-49 2) Scroll to the right and left to display "LOG TO USBMEM". Press the "↓" button to write to the USB memory device. UPDATE:LANC →/↓ BOOTROM XX.XX →/↓ UPDATE:USB →/↓ F-5-58 ■...
  • Page 323 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Function Overview > Target Data for Backup 5-50 Backup/Restoration by Expansion ROM for servicing ■ Target Data for Backup and Sublog Board User mode setting values Service mode setting values Function Overview Page counter Device serial number...
  • Page 324 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Backup and Restoration (Export and Import) > Installing the Expansion ROM for servicin 5-51 Backup and Restoration (Export and Import) ■ Installing the Expansion ROM for servicing and Sublog Board 1) Install the Expansion ROM for servicing to the Sublog Board.
  • Page 325 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Backup and Restoration (Export and Import) > Restoration Procedure (Import) 5-52 ■ Restoration Procedure (Import) Backup Procedure (Export) 1) Install the unused Main Controller PCB which has been installed with the Sublog Board (to 1) The menu is displayed when turning ON the power while the Sublog Board attached with which data was exported) attached with the Expansion ROM to the machine.
  • Page 326 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Others > Deletion (Erase) 5-53 Others 3) The data in the Sublog Board is deleted and the following message is displayed in the case of successful completion. ■ Deletion (Erase) NVRAM import complete When the data is not imported although it was exported, it needs to be deleted to prevent leakage of information.
  • Page 327 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Others > List of Error Messages 5-54 ■ List of Error Messages The following messages are displayed when certain failures occur during operation. List of Messages Detail Sublog board not found Sublog Board is not installed.
  • Page 328 CDS. e-RDS updated remotely, which effectively slashes costs incurred in field services. 4) Download firmware Canon Inc. Firmware Upload • MEAP Application/System Option Installation Updater Firmware By linking devices to CDS and License Management System (providing the function to manage licenses;...
  • Page 329 Firmware Group firmware Firmware Updating downloaded firmware Cancelling downloaded Service Command for Firmware Distribution firmware Technician Canon Inc. Acquiring firmware distribution information registered from F-5-74 Notifying firmware version information Periodical update Inquiring license for MEAP MEAP application/ application option system option...
  • Page 330 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Overview 5-57 ● Distribution Flow MEAP Application/System Option Installation Flow MEAP application/system option installation method using service mode is not provided. Firmware Installation Flow Be sure to use the user mode to install. Service technicians provide firmware install services in the following 4 methods.
  • Page 331 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Limitations and Cautions 5-58 ■ Limitations and Cautions Job/Function Receiving Printing Queued print type jobs ● Limitations PRINT Wait for EOJ Wait for EOJ Wait for EOJ (end of job) Changing Date/Time on Device I-FAX Receipt...
  • Page 332 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Preparation 5-59 ■ Preparation ● Setting Sales Company’s HQ When using devices input in the markets listed below, the default setting of Sales Company’s ● Overview of Preparation HQ should be changed before obtaining firmware distributed from CDS.
  • Page 333 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Preparation 5-60 ● Network Settings 2. Type the password [*28*] then log in it. Connecting to External Network Caution: The method of connecting to external network is similar to a normal network connection In the case of the following, you cannot log in even if you input a right password.
  • Page 334 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Preparation 5-61 Communication Test Caution: This section describes how to check if the communication is normally done to the distribution The setting change of the output level influences a performance. server and/or the file server.
  • Page 335 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Preparation 5-62 3. The Communication Test is carried out. ● Enabling UGW Link When installing the firmware in the method of “UGW-linked Download and Update” or “UGW- linked Download”, the following should be set before actually using UGW link.
  • Page 336 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Preparation 5-63 ● Enabling [Install Application/Options] Button of User Mode (Remote ● Enabling [Manual Update] Button of User Mode (Remote UI) To allow users to install firmware from Updater using the file on Local PCs, the setting of firmware installation should be set to ON for users in advance.
  • Page 337 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Preparation 5-64 ● Enabling [Scheduled Update] Button of User Mode Service Setting of Device Service Mode SERVICE MODE >FUNCTION GR. >MEAP Technician >CDS-LVUP (On -> Off) •...
  • Page 338 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > System Management Operations 5-65 ■ System Management Operations Log Output Log Level Trace Information Important Message Ordinary Error System Error ● Various Setting Setting Log Level This section describes how to set system log levels.
  • Page 339 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > System Management Operations 5-66 ● Displaying Logs 3. Press [Switch] button. Update Logs This section describes how to confirm System Option/MEAP Application Installation Logs and Firmware Update Logs. 1.
  • Page 340 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > System Management Operations 5-67 System Logs 3. Press [Switch] button. This section describes how to confirm System Logs. 4.Updater internal logs are displayed. 1. Select [Settings/Registration] > [License/Other] > [Register/Update Software] > [Display Logs/Communication Test] from management mode of Remote UI.
  • Page 341 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Maintenance 5-68 ■ Maintenance ● Upgrading Updater The firmware installed in the device should be also upgraded when upgrading Updater. The setting information and logs (update logs/system logs) are inherited in the upgraded version. ●...
  • Page 342 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > FAQ 5-69 ■ FAQ No.3 Q: In the course of “UGW-linked download”, what will happen if the user downloads the ● FAQ on Installing Firmware firmware before the service technician update the firmware downloaded with “UGW-linked No.1 download”...
  • Page 343 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > FAQ 5-70 No.7 ● FAQ on Installing MEAP Application/System Option Q: Can we cancel the operation during firmware download? No.1 A: Yes. [Cancel] button is shown. Q: What happens if a MEAP application is installed in the system with insufficient storage free space? A: An error message is shown.
  • Page 344 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > FAQ 5-71 ● FAQ on General Matters of Updater No.2 Q: How can operations using Updater be masked on the users' side? No.1 A: Be sure to perform the following from the service mode. Q: What preparation is needed in each installation method? •...
  • Page 345 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Error Messages 5-72 ■ Error Messages Error messages displayed in Remote UI are shown below. As to error codes, see the next list. Messages Timing of display Cause Remedy An error occurred with the delivery...
  • Page 346 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Error Messages 5-73 Messages Timing of display Cause Remedy Delivery Server : Connect Failed Communication test, etc. In the communication test, failed to connect to the Check the network environment of the device, and re-execute the job.
  • Page 347 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Error Messages 5-74 Messages Timing of display Cause Remedy An error occurred. communication test, etc. The max value (space/file) was exceeded and new Check if the log file exceeded the max value. Error Code: [xxx] (main screen) log was not accepted.
  • Page 348 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Error Messages 5-75 Messages Timing of display Cause Remedy An error occurred. UGW linkage (main UGW linkage was turned ON when eRDS was OFF.For a device using eRDS, turn ON the eRDS. For a device not using eRDS, turn OFF the Error Code: [xxx] screen) UGW linkage.
  • Page 349 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Error Messages 5-76 Messages Timing of display Cause Remedy An error occurred. Check the Update UGW linkage (main eRDS sent an order but Updater failed to connect Conduct a communication test to analyze the cause of the error.
  • Page 350 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Error Messages 5-77 Messages Timing of display Cause Remedy Delivery Error UGW linkage (Update eRDS sent an order but Updater failed to connect Conduct a communication test to analyze the cause of the error. After solving the cause, Error Code: [xxx] Firmware screen) to the server.
  • Page 351 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Error Codes 5-78 ■ Error Codes Error Codes displayed on Remote UI and how to read them. ● How to read an error code 84 0142 06 Code Value Contents...
  • Page 352 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Error Codes 5-79 Error Code (hex number) Description Remedy Cause of error The first The second The 3rd - 4th The 5th digit The 6 - 8th digits CDS file Network digit Error...
  • Page 353 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Error Codes 5-80 Error Code (hex number) Description Remedy Cause of error The first The second The 3rd - 4th The 5th digit The 6 - 8th digits CDS file Network digit Error...
  • Page 354 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Error Codes 5-81 Error Code (hex number) Description Remedy Cause of error The first The second The 3rd - 4th The 5th digit The 6 - 8th digits CDS file Network digit Error...
  • Page 355 Troubleshooting > Backup/Restoration by Expansion ROM for servicing and Sublog Board > Updater > Error Codes 5-82 Error Code (hex number) Description Remedy Cause of error The first The second The 3rd - 4th The 5th digit The 6 - 8th digits CDS file Network digit Error...
  • Page 356 Appendix ■ General Timing Chart ■ General Circuit Diagram ■ Signal Input/Output List ■ Backup Data...
  • Page 357 Appendix > General Timing Chart General Timing Chart Print command Operation INTR PRINT LSTR STBY STBY Cassette pickup solenoid TOP sensor Fixing delivery sensor Fixing motor Scanner motor TOP signal Drum motor 1 Drum motor 2 Drum motor 3 Pickup motor Primary charging bias Y Primary charging bias M Primary charging bias C...
  • Page 358 General Circuit Diagram General Circuit Diagram (1/2) F-6-2...
  • Page 359 General Circuit Diagram (2/2) F-6-3...
  • Page 360 General Circuit Diagram (1/2) (LBP7780C/5480) DUPMPHAD UN41 DUPMPHAND Duplex Power switch PCB DUPMPHBD LED1 reverse Upper high-voltage power supply PCB Front side pre-exposure LED 1 DUPMPHBND motor +24VB LED2 Front side pre-exposure LED 2 DUP_SL J201 J200 J1003 Duplex LED3 Front side pre-exposure LED 3 reverse solenoid...
  • Page 361 General Circuit Diagram (2/2) (LBP7780C/5480) UN39 CN1F Control panel PCB UN50 All night PCB PowerCable INL101 10 11 9 10 11 12 CN2M CN2F J1111F J1111M UN49 Relay PCB J1201M J1211M 12 11 10 9 J1211F J1201F 11 10 J120 200V 120V TB210...
  • Page 362 Appendix > Signal Input/Output List Signal Input/Output List Connector Abbreviation Logic Signal name J105 AWAKE (Not in use) Connector Abbreviation Logic Signal name SGND J100 +24VA /BD1O Pulse Y BD signal +24VB /BD2O Pulse M BD signal PGND /BD3O Pulse C BD signal PGND /BD4O...
  • Page 363 Appendix > Signal Input/Output List Connector Abbreviation Logic Signal name Connector Abbreviation Logic Signal name J106 +24VA J109 +3.3VS /SCN2ACC Scanner motor accelerating signal SGND /SCN2DEC Scanner motor decelerating signal /TOPI TOP signal PGND SGND +24VA OHT_SNS Analog OHT detection signal /SCN4ACC Scanner motor accelerating signal 24VAFU3...
  • Page 364 Appendix > Signal Input/Output List Connector Abbreviation Logic Signal name Connector Abbreviation Logic Signal name J111 SGND J113 +24VB /VDO42 Bk video signal PGND VDO42 Bk video signal +5VC LD4CTRL2 Bk laser control signal SGND LD4CTRL1 Bk laser control signal +24VB LD4CTRL0 Bk laser control signal...
  • Page 365 Appendix > Signal Input/Output List 6-10 Connector Abbreviation Logic Signal name Connector Abbreviation Logic Signal name J116 /HVRESET Pulse High-voltage IC reset signal J120 +24VA HVDALD Pulse High-voltage IC load signal +24VA HVDACLK Pulse High-voltage IC clock signal PGND HVDATA2 Pulse High-voltage IC data signal PGND...
  • Page 366 Appendix > Signal Input/Output List 6-11 Connector Abbreviation Logic Signal name Connector Abbreviation Logic Signal name J122 OHT_LED OHT sensor LED control signal J127 +5VA +3.3V PREEXP4 Bk pre-exposure LED control signal J123 +3.3VS +5VA SGND PREEXP3 C pre-exposure LED control signal PAPOUT Fixing delivery detection signal +5VA...
  • Page 367 Appendix > Signal Input/Output List 6-12 Connector Abbreviation Logic Signal name Connector Abbreviation Logic Signal name J130 N.C. J137 WTMON Waste toner feed motor control signal N.C. WTMSNS Waste toner feed motor current signal RDSRGAIN0 Color displacement/density sensor SGND sensitivity signal (rear) RTSNS1 Y toner level detection signal RDSRGAIN1...
  • Page 368 Appendix > Signal Input/Output List 6-13 Connector Abbreviation Logic Signal name J140 OUTA Lifter motor control signal OUT/A Lifter motor control signal +3.3V SGND CSTSNS Cassette presence detection signal +3.3VS SGND CSTLUPS Cassette media surface detection signal +3.3VS SGND CSTPEND Cassette media presence detection signal 24VAFU2...
  • Page 369 6-14 Backup Data Data to Be Stored Data Replacement Delete User Backup Service Backup Location User function Service function When Initializing Initializing IPSec SD Card (Fixing unit/ NVRAM DC Controller E-RDS > Can Data Method Location to Method 1 Location to Method 2 Location to Replacing Controller...
  • Page 370 6-15 6-15...
  • Page 371 6-16 6-16...

This manual is also suitable for:

Lbp7750c seriesLbp5480 seriesLbp5460 series