Konica Minolta bizhub 423 Service Manual
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Konica Minolta bizhub 423 Service Manual

Konica Minolta bizhub 423 Service Manual

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SERVICE MANUAL
THEORY OF OPERATION
2010.04
Ver. 1.0

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Summary of Contents for Konica Minolta bizhub 423

  • Page 1 SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...

  • Page 2: Table Of Contents

    WARNING INDICATIONS ON THE MACHINE ............S-18 MEASURES TO TAKE IN CASE OF AN ACCIDENT ............S-20 Composition of the service manual ................. C-1 Notation of the service manual ..................C-2 bizhub 423/363/283/223 Main body OUTLINE ........................1 CONFIGURATION/OPERATION .................. 15 DF-621 OUTLINE ........................
  • Page 3 SD-509 OUTLINE ........................1 CONFIGURATION/OPERATION ..................3 JS-603 OUTLINE ........................1 CONFIGURATION/OPERATION ..................3 FS-529 OUTLINE ........................1 CONFIGURATION/OPERATION ..................5 AU-102/AU-201 AU-102..........................1 AU-201..........................2 EK-604/605/SC-507 EK-604..........................1 EK-605..........................2 SC-507 ........................... 4...

  • Page 4: Safety And Important Warning Items

    IMPORTANT NOTICE Because of possible hazards to an inexperienced person servicing this product as well as the risk of damage to the product, KONICA MINOLTA BUSINESS TECHNOLOGIES, INC. (hereafter called the KMBT) strongly recommends that all servicing be performed only by KMBT-trained service technicians.

  • Page 5: Safety Warnings

    [1] MODIFICATIONS NOT AUTHORIZED BY KONICA MINOLTA BUSINESS TECHNOLOGIES, INC. KONICA MINOLTA brand products are renowned for their high reliability. This reliability is achieved through high-quality design and a solid service network. Product design is a highly complicated and delicate process where numerous mechanical, physical, and electrical aspects have to be taken into consideration, with the aim of arriving at proper tolerances and safety factors.

  • Page 6: Power Plug Selection

    SAFETY AND IMPORTANT WARNING ITEMS [2] POWER PLUG SELECTION In some countries or areas, the power plug provided with the product may not fit wall outlet used in the area. In that case, it is obligation of customer engineer (hereafter called the CE) to attach appropriate power plug or power cord set in order to connect the product to the supply.

  • Page 7: Checkpoints When Performing On-Site Service

    SAFETY AND IMPORTANT WARNING ITEMS [3] CHECKPOINTS WHEN PERFORMING ON-SITE SERVICE KONICA MINOLTA brand products are extensively tested before shipping, to ensure that all applicable safety standards are met, in order to protect the customer and customer engi- neer (hereafter called the CE) from the risk of injury. However, in daily use, any electrical equipment may be subject to parts wear and eventual failure.
  • Page 8 SAFETY AND IMPORTANT WARNING ITEMS Power Plug and Cord WARNING • When using the power cord set (inlet type) that came with this product, make sure the connector is securely inserted in the inlet of the product. When securing measure is provided, secure the cord with the fixture properly.
  • Page 9 SAFETY AND IMPORTANT WARNING ITEMS Wiring WARNING • Never use multi-plug adapters to plug multiple power cords in the same outlet. If used, the risk of fire exists. • When an extension cord is required, use a specified one. Current that can flow in the extension cord is limited, so using a too long extension cord may result in fire.

  • Page 10: Inspection Before Servicing

    SAFETY AND IMPORTANT WARNING ITEMS Ventilation CAUTION • The product generates ozone gas during operation, but it will not be harmful to the human body. If a bad smell of ozone is present in the following cases, ventilate the room. a.
  • Page 11 SAFETY AND IMPORTANT WARNING ITEMS Inspection before Servicing CAUTION • Do not leave the machine unattended during transporta- tion, installation, and inspection of the machine. If it is to be unavoidably left unattended, face protrusions toward the wall or take other necessary risk reducing action. The user may stumble over a protrusion of the machine or be caught by a cable, falling to the floor or being injured.
  • Page 12 SAFETY AND IMPORTANT WARNING ITEMS Safety Checkpoints WARNING • When mounting an option on the machine, be careful about the clearance between the machine and the option. You may be injured with your finger or hand pinched between the machine and the option. •...
  • Page 13 SAFETY AND IMPORTANT WARNING ITEMS Safety Checkpoints WARNING • Before disassembling or adjusting the write unit (P/H unit) incorporating a laser, make sure that the power cord has been disconnected. The laser light can enter your eye, leading to a risk of loss of eyesight.

  • Page 14: Handling Of Consumables

    SAFETY AND IMPORTANT WARNING ITEMS Handling of Consumables WARNING • Toner and developer are not harmful substances, but care must be taken not to breathe excessive amounts or let the substances come into contact with eyes, etc. It may be stimulative.
  • Page 15 SAFETY AND IMPORTANT WARNING ITEMS [4] Used Batteries Precautions ALL Areas CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions. Germany VORSICHT! Explosionsgefahr bei unsachgemäßem Austausch der Batterie.

  • Page 16: Internal Laser Radiation

    Internal Laser Radiation semiconductor laser Maximum power of the laser diode 15 mW bizhub 423/363 17.3 µW Maximum average radiation power (*) bizhub 283/223 13.9 µW Wavelength...
  • Page 17 SAFETY AND IMPORTANT WARNING ITEMS U.S.A., Canada (CDRH Regulation) • This machine is certified as a Class 1 Laser product under Radiation Performance Stan- dard according to the Food, Drug and Cosmetic Act of 1990. Compliance is mandatory for Laser products marketed in the United States and is reported to the Center for Devices and Radiological Health (CDRH) of the U.S.
  • Page 18 SAFETY AND IMPORTANT WARNING ITEMS Finland, Sweden LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT VAROITUS! • Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saat- taa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle laser- säteilylle. puolijohdelaser Laserdiodin suurin teho 15 mW aallonpituus 770-800 nm VARNING!

  • Page 19: Laser Safety Label

    SAFETY AND IMPORTANT WARNING ITEMS Laser Safety Label • A laser safety label is attached to the inside of the machine as shown below. *only for the U.S.A. A1UDP0E504DA Laser Caution Label • A laser caution label is attached to the outside of the machine as shown below. A1UDP0C503DA S-16...

  • Page 20: Precautions For Handling The Laser Equipment

    SAFETY AND IMPORTANT WARNING ITEMS PRECAUTIONS FOR HANDLING THE LASER EQUIPMENT • When laser protective goggles are to be used, select ones with a lens conforming to the above specifications. • When a disassembly job needs to be performed in the laser beam path, such as when working around the printerhead and PC drum, be sure first to turn the printer OFF.

  • Page 21: Warning Indications On The Machine

    SAFETY AND IMPORTANT WARNING ITEMS WARNING INDICATIONS ON THE MACHINE Caution labels shown are attached in some areas on/in the machine. When accessing these areas for maintenance, repair, or adjustment, special care should be taken to avoid burns and electric shock. A1UDP0E505DA S-18...

  • Page 22: High Voltage

    SAFETY AND IMPORTANT WARNING ITEMS High voltage This area generates high voltage. Be careful not to touch here when the power is turned ON to avoid getting an electric shock. High voltage This area generates high voltage. Be careful not to touch here when the power is turned ON to avoid getting an electric shock.

  • Page 23: Measures To Take In Case Of An Accident

    MEASURES TO TAKE IN CASE OF AN ACCIDENT MEASURES TO TAKE IN CASE OF AN ACCIDENT 1. If an accident has occurred, the distributor who has been notified first must immediately take emergency measures to provide relief to affected persons and to prevent further damage.

  • Page 24: Composition Of The Service Manual

    Composition of the service manual This service manual consists of Theory of Operation section and Field Service section to explain the main machine and its corresponding options. Theory of Operation section gives, as information for the CE to get a full understanding of the product, a rough outline of the object and role of each function, the relationship between the electrical system and the mechanical system, and the timing of operation of each part.

  • Page 25: Notation Of The Service Manual

    Notation of the service manual A. Product name In this manual, each of the products is described as follows: (1) bizhub 423/363/283/223: Main body (2) Microsoft Windows NT 4.0: Windows NT 4.0 or Windows NT Microsoft Windows 2000: Windows 2000...

  • Page 26: Theory Of Operation

    SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...

  • Page 27: Revision History

    Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
  • Page 28 Theory of Operation Ver. 1.0 Apr. 2010 CONTENTS bizhub 423/363/283/223 Main body OUTLINE SYSTEM CONFIGURATION................... 1 PRODUCT SPECIFICATIONS ................3 Type ........................3 Functions ......................4 Paper ........................6 Materials ....................... 7 Print volume......................7 Machine specifications..................8 Operating environment ..................8 Print functions .......................
  • Page 29 Theory of Operation Ver. 1.0 Apr. 2010 WRITE SECTION (PH SECTION) ................ 30 Configuration ...................... 30 Operation......................31 8.2.1 Laser exposure process................31 8.2.2 Laser emission timing ................. 32 8.2.3 Advance polygon rotation ................32 8.2.4 Laser emission stop..................32 8.2.5 Laser emission area ...................
  • Page 30 Theory of Operation Ver. 1.0 Apr. 2010 11.3.6 Measure the temperature of the area around the photo conductor mechanism....................57 11.3.7 Drum unit detection..................58 11.3.8 Drum unit life detection ................59 11.3.9 Life value of drum unit................. 62 11.3.10 Ozone filter new article detection..............62 11.3.11 Ozone filter life detection................
  • Page 31 Theory of Operation Ver. 1.0 Apr. 2010 PAPER FEED SECTION (MANUAL BYPASS TRAY) ........... 88 14.1 Configuration ...................... 88 14.2 Drive ........................89 14.3 Operation......................90 14.3.1 Up/down control..................90 14.3.2 Paper feed control..................93 14.3.3 Paper size detection control................ 96 14.3.4 Paper empty detection ................
  • Page 32 Theory of Operation Ver. 1.0 Apr. 2010 17.3.6 Curl prevention control ................140 17.3.7 Fusing unit new article detection............... 140 17.3.8 Fusing unit life detection ................141 17.3.9 Life value of fusing unit ................144 PAPER EXIT/SWITCHBACK SECTION.............. 145 18.1 Configuration/Drive ................... 145 18.2 Operation ......................
  • Page 33 Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 34: Outline

    [15] Saddle stitcher SD-509 [16] Finisher FS-527 [17] Punch kit PK-517 [18] Job separator JS-603 [19] Finisher FS-529 [20] Job separator JS-505 [21] Stamp unit SP-501 *1: Standard equipment only on bizhub 423, and bizhub 363 for North America and Europe.
  • Page 35 • Use the desk or the paper feed cabinet without fail when installing on the floor in order to keep the function and quality of the unit. 2/2 System rear view A1UDF1E004DA bizhub 423/363/283/223 Fax kit FK-508 Security kit SC-507...

  • Page 36: Product Specifications

    Theory of Operation Ver. 1.0 Apr. 2010 2. PRODUCT SPECIFICATIONS PRODUCT SPECIFICATIONS Type Type Desktop/console *1 scanner/printer Printing process Laser electrostatic printing system PC drum type OPC drum: KM-1 Scanning density 600 dpi in main scanning direction x 600 dpi in sub scanning direction Exposure lamp White rare-gas fluorescent lamp 30 W Platen...

  • Page 37: Functions

    Trailing edge: 4.2 mm (3/16 inch), Rear edge: 4.2 mm (3/16 inch), Front edge: 4.2 mm (3/16 inch) First copy time (Tray1/2 A4 or 8 x 11, full size) bizhub 423/363 3.6 sec. or less bizhub 283/223 4.2 sec. or less Processing speed bizhub 423/363 173.0 mm/s...
  • Page 38 Theory of Operation Ver. 1.0 Apr. 2010 2. PRODUCT SPECIFICATIONS Paper size Tray 1 Metric area A3 to B5/B5S, A5S, 16K, 8K Inch area 11 x 17 to 8 x 11, 8 x 11S, S, 8 x 13 Tray 2 Metric area A3 to B5/B5S,16K, 8K Inch area...

  • Page 39: Paper

    2. PRODUCT SPECIFICATIONS Theory of Operation Ver. 1.0 Apr. 2010 Paper Paper source (maximum tray capacity) Type Tray 1 Tray 2 Manual bypass tray ❍ (500 sheets) ❍ (500 sheets) ❍ (150 sheets) Plain paper (60 to 90 g/m / 16 to 24 lb) ⎯...

  • Page 40: Materials

    423 480,000 prints A1UD R711 XX bizhub 363 440,000 prints bizhub 283 400,000 prints bizhub 223 320,000 prints Print volume • bizhub 423 Europe Average 10,700 prints/month Maximum 60,000 prints/month Except for Europe Average 8,300 prints/month Maximum 60,000 prints/month •...

  • Page 41: Machine Specifications

    1,634 mm (W) x 895 mm (D) x 1,141 mm (H) *4 64.3 inch (W) x 35.2 inch (D) x 44.9 inch (H) *4 Weight bizhub 423/363 Approx. 78 kg / 172 lb (except for developer and toner bottle) bizhub 283/223 Approx.

  • Page 42: Print Functions

    Theory of Operation Ver. 1.0 Apr. 2010 2. PRODUCT SPECIFICATIONS Print functions Type Built-in printer controller 2 GB (shared with the main body) 250 GB (shared with the main body) * Optional in some models and marketing areas. 1 GB Interface Standard Ethernet (1000Base-T/100Base-TX/10Base-T)
  • Page 43 2. PRODUCT SPECIFICATIONS Theory of Operation Ver. 1.0 Apr. 2010 Printer driver PostScript KONICAMI- Windows 2000 Professional (SP4 or later) NOLTA driver (PS driver) Windows 2000 Server (SP3 or later) Windows XP Home Edition (SP1 or later) Windows XP Professional (SP1 or later) Windows Server 2003, Standard Edition (SP1 or later) Windows Server 2003, Enterprise Edition...
  • Page 44 Theory of Operation Ver. 1.0 Apr. 2010 2. PRODUCT SPECIFICATIONS Printer driver Fax driver Windows NT Workstation Version 4.0 (SP6 or later) Windows NT Server Version 4.0 (SP6 or later) Windows 2000 Professional (SP4 or later) Windows 2000 Server (SP3 or later) Windows XP Home Edition (SP1 or later) Windows XP Professional (SP1 or later) Windows Server 2003, Standard Edition...

  • Page 45: Scan Functions

    2. PRODUCT SPECIFICATIONS Theory of Operation Ver. 1.0 Apr. 2010 Scan functions Scanner Scannable range Same as the copier (Max. 11 x 17: inch area, A3: metric area) Scan speed 70 pages/min (A4 or 8 1/2 x 11, DF scan, 1-side original Resolution 300 dpi) Functions Scan to E-mail, Scan to FTP, Scan to SMB, Scan to...

  • Page 46: Section Configuration

    Theory of Operation Ver. 1.0 Apr. 2010 3. SECTION CONFIGURATION SECTION CONFIGURATION [13] [14] [12] [11] [10] A1UDT1C001DA [1] DF-621 * Scanner section [3] Paper exit/switchback section Fusing section [5] Duplex section Image transfer/separation section [7] Registration section Paper feed section (manual bypass tray) [9] Paper feed section (tray 2) [10] Paper feed section (tray 1) [11] Write section (PH section)

  • Page 47: Paper Path

    4. PAPER PATH Theory of Operation Ver. 1.0 Apr. 2010 PAPER PATH • Machine equipped with a DF-621, FS-527, and PC-208. A1UDT1C002DA...

  • Page 48: Configuration & Operation

    Theory of Operation Ver. 1.0 Apr. 2010 5. OVERALL CONFIGURATION CONFIGURATION/OPERATION OVERALL CONFIGURATION Control block diagram Scanner section Reverse Inverter board automatic document feeder CCD board Scanner relay board Control panel DC power supply Secret boad USB board MFP board Authentication Fusing unit unit...

  • Page 49: Image Creation Process

    5. OVERALL CONFIGURATION Theory of Operation Ver. 1.0 Apr. 2010 Image creation process [12] [11] [14] [13] [10] [6] [7] [8] A1UDT2C015DA • Light reflected off the surface of the original is converted to a correspond- (Photoelectric ing electric signal by CCD and the resultant electric signal is sent to the conversion) MFP board.

  • Page 50: Image Forming Control

    Theory of Operation Ver. 1.0 Apr. 2010 5. OVERALL CONFIGURATION Image forming control [10] [21] [11] [21] [12] [13] [14] [15] [16] [17] [18] [19] [20] A1UDT2C068DA [1] Transport motor (M1) PC motor (M2) [3] Polygon motor (M5) [5] Paper exit sensor (PS3) Charge [7] Developing bias DC Developing bias AC...

  • Page 51: Process Speed

    • The process speed is not changed according to the size or type of the paper. Instead, the main body controls the intervals between sheets of paper (paper transport timing). Process speed bizhub 423 173 mm/s bizhub 363 bizhub 283...

  • Page 52: Interface Section

    Theory of Operation Ver. 1.0 Apr. 2010 6. INTERFACE SECTION INTERFACE SECTION Configuration 6.1.1 Rear side 1 A1UDT2C016DB [1] Telephone jack 2 (LINE PORT2) Telephone jack 1 (LINE PORT1) [3] Jack for connecting a telephone (TEL PORT1) USB port (Type A) USB2.0/1.1 [5] USB port (Type B) USB2.0/1.1 Network connector (10Base-T/100Base-TX/1000Base-T)

  • Page 53: Rear Side 2

    6. INTERFACE SECTION Theory of Operation Ver. 1.0 Apr. 2010 6.1.2 Rear side 2 A1UDT2E018DB Power code...

  • Page 54: Scanner Section

    Theory of Operation Ver. 1.0 Apr. 2010 7. SCANNER SECTION SCANNER SECTION Configuration [15] [14] [13] [12] [11] [10] A1UDT2E009DB [1] Angle sensor (PS202) Original size detection sensor/1 (PS204) [3] Scanner motor (M201) Inverter board (INVB) [5] Scanner relay board (REYB/SCAN) Scanner home sensor (PS201) [7] Exposure unit Mirror unit...

  • Page 55: Drive

    7. SCANNER SECTION Theory of Operation Ver. 1.0 Apr. 2010 Drive A1UDT2C536AB Scanner motor (M201) Scanner drive cable/R Scanner home sensor (PS201) Mirror unit Exposure unit Scanner drive cable/F...

  • Page 56: Operation

    Theory of Operation Ver. 1.0 Apr. 2010 7. SCANNER SECTION Operation 7.3.1 When the power is ON 1. The exposure unit moves from the scanner standby position to the home position. 2. The exposure unit moves from the home position to the shading position (under the shading correction sheet) and stops (in scanning direction).

  • Page 57: Control When The Start Key Is Pressed

    7. SCANNER SECTION Theory of Operation Ver. 1.0 Apr. 2010 7.3.2 Control when the Start key is pressed A. Original scanning mode • Original scanning mode has two types: Original cover mode and DF mode. (1) Original cover mode 1. Turning the Start key ON will turn the exposure lamp ON (at the scanner standby position).
  • Page 58 Theory of Operation Ver. 1.0 Apr. 2010 7. SCANNER SECTION (2) DF mode • The original fed by the reverse automatic document feeder will be read at the original DF glass. The exposure unit will move to the reading position and stops. The original will be read as it is transferred.
  • Page 59 7. SCANNER SECTION Theory of Operation Ver. 1.0 Apr. 2010 B. Original scanning control • The light reflected off the exposed original reaches the CCD sensor via the lens. • The CCD sensor outputs an electric signal (analog) that varies according to the intensity of the light.

  • Page 60: Original Scanning Area

    Theory of Operation Ver. 1.0 Apr. 2010 7. SCANNER SECTION 7.3.3 Original scanning area • Original scanning areas vary depending on a scanning mode. A. Original cover mode • Main scanning direction: Max. 297.0 mm • Sub scanning direction: Max. 431.8 mm B.
  • Page 61 7. SCANNER SECTION Theory of Operation Ver. 1.0 Apr. 2010 B. Original size judgement NOTE • Table 1 or 2 can be selected in the Service Mode. Criterion Metric area & china area Table 1 Original Main scanning width (mm) size detection 0~130.0...

  • Page 62: Image Processing

    Theory of Operation Ver. 1.0 Apr. 2010 7. SCANNER SECTION 7.3.5 Image processing The image processing has following items. For details, see “20. Image processing”. See P.155 Scanner section image processing block diagram • Photoelectric conversion • Analog-to-digital conversion...

  • Page 63: Write Section (Ph Section)

    8. WRITE SECTION (PH SECTION) Theory of Operation Ver. 1.0 Apr. 2010 WRITE SECTION (PH SECTION) Configuration [10] A1UDT2C519AA Laser aperture G2 lens Index lens Index board (INDEXB) Laser drive board (LASDB) Collimator lens Cylindrical lens Polygon motor (M5) G1 lens [10] Index mirror...

  • Page 64: Operation

    Theory of Operation Ver. 1.0 Apr. 2010 8. WRITE SECTION (PH SECTION) Operation 8.2.1 Laser exposure process 1. The laser light emitted from the semiconductor laser on the laser drive board is inci- dent upon the polygon mirror via the collimator lens and the cylindrical lens. 2.

  • Page 65: Laser Emission Timing

    8. WRITE SECTION (PH SECTION) Theory of Operation Ver. 1.0 Apr. 2010 8.2.2 Laser emission timing • The index sensor has a function of keeping the same laser light emission timing per every one line in the main scanning direction. •...
  • Page 66 Theory of Operation Ver. 1.0 Apr. 2010 8. WRITE SECTION (PH SECTION) A1UDT2C560AA [1] Void image area along the edge of the paper Void image area along the leading edge of the paper [3] Void image area along the trailing edge of the paper...

  • Page 67: Toner Supply Section

    9. TONER SUPPLY SECTION Theory of Operation Ver. 1.0 Apr. 2010 TONER SUPPLY SECTION Configuration A1UDT2C516AA Toner bottle Toner hopper Toner bottle motor (M3) Toner bottle home sensor (PS4)

  • Page 68: Drive

    Theory of Operation Ver. 1.0 Apr. 2010 9. TONER SUPPLY SECTION Drive 9.2.1 Toner bottle drive A1UDT2C518AA [1] Toner bottle motor (M3) Toner bottle home sensor (PS4) [3] Toner bottle holder 9.2.2 Toner hopper drive A1UDT2C517AA [1] Toner agitating blade/1 Toner agitating blade/2 [3] Toner conveying screw Toner supply motor (M4)

  • Page 69: Operation

    9. TONER SUPPLY SECTION Theory of Operation Ver. 1.0 Apr. 2010 Operation 9.3.1 Toner flow • The TCR sensor mounted in the developing unit detects the T/C ratio in the developing unit. Toner is supplied from the toner bottle to the toner hopper and from the toner hop- per to the developing unit according to the T/C ratio detected by the TCR sensor and the amount of toner consumed.

  • Page 70: Toner Replenishing Mechanism

    Theory of Operation Ver. 1.0 Apr. 2010 9. TONER SUPPLY SECTION 9.3.2 Toner replenishing mechanism A. Toner supply from toner bottle to toner hopper • The toner bottle motor provides the drive for replenishing toner from the toner bottle to the toner hopper.

  • Page 71: Toner Replenishing Control

    9. TONER SUPPLY SECTION Theory of Operation Ver. 1.0 Apr. 2010 9.3.3 Toner replenishing control • The toner replenishing control is performed through two different control modes: toner replenishing control to the toner hopper and toner replenishing control to the developing unit.

  • Page 72: T/C Ratio Recovery Control

    Theory of Operation Ver. 1.0 Apr. 2010 9. TONER SUPPLY SECTION A1UDT2C597AA [1] Toner agitating blade/2 (when the toner is full) [2] Toner agitating blade/2 makes a verti- cal movement. [3] Toner agitating blade/2 (when the toner decreases) [4] Toner near empty switch (RS1) [5] Toner level (small amount of toner left) [6] Toner level (toner full) [7] Magnet...

  • Page 73: Manual Toner Add Control

    9. TONER SUPPLY SECTION Theory of Operation Ver. 1.0 Apr. 2010 9.3.5 Manual Toner Add control • A function of the Service Mode (Manual Toner Add) may also be used to supply toner forcibly. “Service Mode / Imaging Process Adjustment / Manual Toner Add / Black” •...

  • Page 74: Toner Level Detection Control

    Theory of Operation Ver. 1.0 Apr. 2010 9. TONER SUPPLY SECTION 9.3.6 Toner level detection control A. Toner near empty detection control • A toner near empty condition is detected based on the number of “continuous toner replenishing sequences” (the number of times the toner bottle is continuously rotated) in which toner is supplied from the toner bottle to toner hopper.
  • Page 75 9. TONER SUPPLY SECTION Theory of Operation Ver. 1.0 Apr. 2010 B. Toner empty detection control • The main body determines that there is a toner empty condition when any of the follow- ing conditions is detected. (1) Toner empty condition detected through monitoring the cumulative amount of toner supplied •...
  • Page 76 Theory of Operation Ver. 1.0 Apr. 2010 9. TONER SUPPLY SECTION D. Toner level display (1) Toner near empty display (typical) A1UDT2E049DA (2) Toner empty display (typical) A1UDT2E050DA [1] Replaced by user Replaced by service engineer...
  • Page 77 9. TONER SUPPLY SECTION Theory of Operation Ver. 1.0 Apr. 2010 E. Resetting the toner near empty and toner empty conditions • Either the “toner replenishing control to toner hopper” or “toner replenishing control to developing unit” is performed (both may be performed in some cases) if the toner bottle is replaced with a new one after a toner near empty condition and a toner empty condi- tion have been detected.

  • Page 78: Main Body Interior Temperature Measurement System

    Theory of Operation Ver. 1.0 Apr. 2010 9. TONER SUPPLY SECTION 9.3.7 Main body interior temperature measurement system • The temperature/humidity sensor is located on the back panel of the main body. It is used to measure the temperature and humidity inside the main body. •...

  • Page 79: Imaging Unit Section (Iu Section)

    10. IMAGING UNIT SECTION (IU SECTION) Theory of Operation Ver. 1.0 Apr. 2010 10. IMAGING UNIT SECTION (IU SECTION) 10.1 Configuration A1UDT2C561AA Imaging unit (IU) Drum unit Developing unit Recycling section Cleaning section Photo conductor section Developing section Charging section...
  • Page 80 Theory of Operation Ver. 1.0 Apr. 2010 10. IMAGING UNIT SECTION (IU SECTION) 10.2 Drive 10.2.1 Drum unit A1UDT2C521AA [1] PC motor (M2) Toner collecting screw/2 [3] Drum unit Toner collecting screw/1 [5] Toner agitating roller 10.2.2 Developing unit A1UDT2C523AA [1] PC motor (M2) Developing roller [3] Toner conveying screw...

  • Page 81: 10.3 Operation

    • The developing unit is replaced once in four times of replacement of the drum unit and developer. Life Model Drum unit Developer Developing unit bizhub 423 120,000 counts 120,000 counts 480,000 counts bizhub 363 110,000 counts 110,000 counts 440,000 counts...

  • Page 82: 11. Drum Unit Section

    Theory of Operation Ver. 1.0 Apr. 2010 11. DRUM UNIT SECTION 11. DRUM UNIT SECTION 11.1 Configuration A1UDT2C520AA [1] Toner agitating roller Separation claw [3] Toner collecting screw/1 Charge corona [5] Photo conductor Toner collecting screw/2...

  • Page 83: 11.2 Drive

    11. DRUM UNIT SECTION Theory of Operation Ver. 1.0 Apr. 2010 11.2 Drive A1UDT2C521AA PC motor (M2) Toner collecting screw/2 Drum unit Toner collecting screw/1 Toner agitating roller • The PC motor provides the drive for the photo conductor which is rotated via the drive gear.

  • Page 84: 11.3 Operation

    Theory of Operation Ver. 1.0 Apr. 2010 11. DRUM UNIT SECTION 11.3 Operation 11.3.1 Charge corona control • The comb electrode deposits a charge evenly across the surface of the photo conductor through a grid mesh. • The corona unit has a comb electrode that discharges only toward the grid mesh. This results in the amount of ozone produced being smaller than with the wire electrode.

  • Page 85: Photo Conductor Cleaning Mechanism

    11. DRUM UNIT SECTION Theory of Operation Ver. 1.0 Apr. 2010 11.3.2 Photo conductor cleaning mechanism A. Cleaning using cleaning blade • Part of the toner that is left on the surface of the photo conductor is scraped off by the cleaning blade.

  • Page 86: Erase Mechanism

    Theory of Operation Ver. 1.0 Apr. 2010 11. DRUM UNIT SECTION 11.3.3 Erase mechanism • Part of the toner that is left on the surface of the photo conductor is scraped off by the cleaning blade. A voltage is applied at this time to the cleaning blade to charge the sur- face of the photo conductor, thereby making the surface potential uniform.

  • Page 87: Ozone Suction Function

    11. DRUM UNIT SECTION Theory of Operation Ver. 1.0 Apr. 2010 11.3.4 Ozone suction function • The comb electrode generates ozone as it discharges. • When the photo conductor is exposed to a predetermined amount of ozone for a prede- termined period of time, the sensitivity of the surface of the photo conductor becomes no longer uniform, resulting in uneven sensitivity.

  • Page 88: Drum Dry Control

    Theory of Operation Ver. 1.0 Apr. 2010 11. DRUM UNIT SECTION 11.3.5 Drum dry control • The photo conductor is rotated idly without the system performing any image forming processes (drum charge, exposure, erase, etc.). • The drum dry sequence is automatically executed (for about 1 min.), if a predetermined condition is met during the predrive after the power has been turned ON and when the main body is reset from the sleep mode.
  • Page 89 11. DRUM UNIT SECTION Theory of Operation Ver. 1.0 Apr. 2010 B. Auto drum dry control • Ozone stagnant in the charging section may change properties of the photo conductor, which results in a reduced initial surface potential and an increased potential after expo- sure.

  • Page 90: Measure The Temperature Of The Area Around The Photo Conductor Mechanism

    Theory of Operation Ver. 1.0 Apr. 2010 11. DRUM UNIT SECTION 11.3.6 Measure the temperature of the area around the photo conductor mecha- nism • The PC thermistor located immediately below the image transfer roller functions to mea- sure the temperature of the area around the photo conductor inside the main body. •...

  • Page 91: Drum Unit Detection

    11. DRUM UNIT SECTION Theory of Operation Ver. 1.0 Apr. 2010 11.3.7 Drum unit detection • The developing mechanism of the main body consists of the drum unit and the develop- ing unit that are treated as one imaging unit. •...

  • Page 92: Drum Unit Life Detection

    Theory of Operation Ver. 1.0 Apr. 2010 11. DRUM UNIT SECTION 11.3.8 Drum unit life detection • The life counter of the drum unit controls detection of life of the drum unit. • The counter value is recorded in the service EEPROM of the main body. Controlled item Counting unit Drum unit rotation time...
  • Page 93 11. DRUM UNIT SECTION Theory of Operation Ver. 1.0 Apr. 2010 (1) Drum unit rotation time counter life criteria State Display Criteria Normal Less than the drum unit rotation Normal (print enabled: within image guaranteed range) time threshold Drum unit rota- Equal to or more than the drum unit tion time L code display...
  • Page 94 Theory of Operation Ver. 1.0 Apr. 2010 11. DRUM UNIT SECTION B. Drum unit life display • The L code screen is displayed when the value of the drum unit rotation time counter reaches the drum unit rotation time threshold (print enabled, outside image guaranteed range).

  • Page 95: Life Value Of Drum Unit

    • The life of consumables varies depending on how the user uses the machine. For details, see “3. PERIODICAL MIANTENANCE ITEMS 3.4 Concept of parts life” of Field Service. Model Excess (reaching the life value) Replacement alarm Life stop bizhub 423/363 3,921 M 4,313 M 4,901 M bizhub 283/223 4,845 M 5,329 M 6,056 M 11.3.10...

  • Page 96: Ozone Filter Life Detection

    Theory of Operation Ver. 1.0 Apr. 2010 11. DRUM UNIT SECTION 11.3.11 Ozone filter life detection • The life counter of the ozone filter controls detection of life of the ozone filter. • The counter value is recorded in the service EEPROM of the main body. Controlled item Counting unit Number of printed pages produced using the cur-...

  • Page 97: Life Value Of Ozone Filter

    • The life of consumables varies depending on how the user uses the machine. For details, see “3. PERIODICAL MIANTENANCE ITEMS 3.4 Concept of parts life” of Field Service. Model Excess (reaching the life value) bizhub 423/363 150,000 counts bizhub 283/223...

  • Page 98: 12. Developing Section

    Theory of Operation Ver. 1.0 Apr. 2010 12. DEVELOPING SECTION 12. DEVELOPING SECTION 12.1 Configuration [10] [11] [12] A1UDT2C522AA [1] Developing roller 1st toner conveying screw [3] 2nd toner conveying screw TCR sensor board (TCRSB) [5] Toner filter (Developing unit side) 3rd toner conveying screw [7] Toner replenishing port Toner collecting screw/2...

  • Page 99: 12.2 Drive

    12. DEVELOPING SECTION Theory of Operation Ver. 1.0 Apr. 2010 12.2 Drive A1UDT2C523AA PC motor (M2) Developing roller Toner conveying screw • The developing roller is driven by the PC motor via the drive gear. • The toner conveying screw is driven by the PC motor via the developing roller.

  • Page 100: 12.3 Operation

    Theory of Operation Ver. 1.0 Apr. 2010 12. DEVELOPING SECTION 12.3 Operation 12.3.1 Toner flow A. Fresh toner • Toner fed off from the toner hopper of the toner supply section is agitated and mixed with the developer by the three toner conveying screws and conveyed onto the developing roller.

  • Page 101: Developing Roller

    12. DEVELOPING SECTION Theory of Operation Ver. 1.0 Apr. 2010 12.3.2 Developing roller • The developer (carrier and toner) in the developer mixing chamber is conveyed onto the point of development by the toner conveying screws and the developing roller. •...

  • Page 102: Developing Bias

    Theory of Operation Ver. 1.0 Apr. 2010 12. DEVELOPING SECTION 12.3.4 Developing bias • The developing bias voltage (Vdc) is applied to the developing roller so that an adequate amount of toner is attracted onto the surface of the photo conductor. •...

  • Page 103: Developer Scattering Preventive Mechanism

    12. DEVELOPING SECTION Theory of Operation Ver. 1.0 Apr. 2010 12.3.5 Developer scattering preventive mechanism • To prevent the image and machine interior from being dirtied, the toner suction fan motor draws air so that toner particles rising up in the developing unit can be trapped. •...

  • Page 104: Tcr Sensor Control

    Theory of Operation Ver. 1.0 Apr. 2010 12. DEVELOPING SECTION 12.3.6 TCR sensor control • The TCR sensor is located on the underside of the developing unit. The sensor is a non- contact magnetic type that measures permeability (bulk density) of the toner and carrier to thereby detect the toner-to-carrier ratio (T/C).

  • Page 105: Developing Unit Detection

    12. DEVELOPING SECTION Theory of Operation Ver. 1.0 Apr. 2010 12.3.7 Developing unit detection • The developing mechanism of the main body consists of the drum unit and the develop- ing unit that are treated as one imaging unit. • A signal from the TCR sensor is used to determine whether or not the imaging unit is installed in the main body.

  • Page 106: Developing Unit Life Detection

    Theory of Operation Ver. 1.0 Apr. 2010 12. DEVELOPING SECTION B. TCR sensor adjust A1UDT2E076DA C. Manual drum dry A1UDT2E033DA 12.3.8 Developing unit life detection • The life counters of the developing unit and developer are used to control detection of the life of the developing unit.
  • Page 107 12. DEVELOPING SECTION Theory of Operation Ver. 1.0 Apr. 2010 A. Developing unit counter life determination • Each of the developing unit rotation time counter and the developer use time counter has its own threshold value. If the developing unit rotation time counter value and the devel- oper use time counter value reach their respective threshold values, the main body determines that the drum unit has reached a new state.
  • Page 108 Theory of Operation Ver. 1.0 Apr. 2010 12. DEVELOPING SECTION A1UDT2E036DA B. Developing unit life display • The L code screen is displayed when the values of the developing unit rotation time counter and the developer use time counter reach the life thresholds (print enabled, out- side image guaranteed range).

  • Page 109: Life Value Of Developing Unit

    Field Service. Excess (reaching the Replacement Model Counter Life stop life value) alarm Developing unit rotation 15,684M 15,684M 15,684M time bizhub 423/363 Developer use time 3,921M 4,313M 4,901M Developing unit rotation 19,380M 19,380M 19,380M time bizhub 283/223 Developer use time 4,845M...

  • Page 110: Developer New Article Detection

    Theory of Operation Ver. 1.0 Apr. 2010 12. DEVELOPING SECTION 12.3.10 Developer new article detection • No new article detection functions are provided. If the developer is replaced with a new one, therefore, the “Developer Unit Rotation Time counter” must be reset using “Service Mode / Counter / Life”.

  • Page 111: Developer Life Detection

    12. DEVELOPING SECTION Theory of Operation Ver. 1.0 Apr. 2010 C. Manual drum dry A1UDT2E033DA 12.3.11 Developer life detection • The life counter of the developer controls detection of life of the developer. • The counter value is recorded in the service EEPROM of the main body. Controlled item Counting unit Developer use time...
  • Page 112 Theory of Operation Ver. 1.0 Apr. 2010 12. DEVELOPING SECTION (1) Developer use time counter life criteria State Display Criteria Normal Less than the developer use time Normal (print enabled: within image guaranteed range) threshold Developer use Equal to or more than the developer L code display time excess use time threshold and less than the...
  • Page 113 12. DEVELOPING SECTION Theory of Operation Ver. 1.0 Apr. 2010 (1) L code display (typical) A1UDT2E051DA L code key [2] L code display (displayed when the L code key is touched) (2) Replacement alarm display (typical) A1UDT2E080DA (3) Life stop display (typical) A1UDT2E081DA...

  • Page 114: Life Value Of Developer

    • The life of consumables varies depending on how the user uses the machine. For details, see “3. PERIODICAL MIANTENANCE ITEMS 3.4 Concept of parts life” of Field Service. Model Excess (reaching the life value) Replacement alarm Life stop bizhub 423/363 3,921M 4,313M 4,901M bizhub 283/223 4,845M 5,329M...

  • Page 115: 13. Image Transfer/Separation Section

    13. IMAGE TRANSFER/SEPARATION SECTION Theory of Operation Ver. 1.0 Apr. 2010 13. IMAGE TRANSFER/SEPARATION SECTION 13.1 Configuration A1UDT2C524AA Image transfer roller Charge neutralizing needle PC thermistor (TH1) Registration roller 13.2 Drive A1UDT2C019DA PC motor (M2) Image transfer roller...

  • Page 116: 13.3 Operation

    Theory of Operation Ver. 1.0 Apr. 2010 13. IMAGE TRANSFER/SEPARATION SECTION 13.3 Operation 13.3.1 Image transfer roller control • To transfer the toner image formed on the photo conductor onto the paper, the image transfer voltage supplied from the high voltage unit is applied to the image transfer roller. •...

  • Page 117: Image Transfer Current Upper/Lower Limit Control

    13. IMAGE TRANSFER/SEPARATION SECTION Theory of Operation Ver. 1.0 Apr. 2010 13.3.3 Image transfer current upper/lower limit control • The image transfer voltage is determined through the image transfer roller control depends on the environmental conditions. A manual fine-adjusting function is also avail- able to achieve an even more optimum image transfer voltage for each type of paper.

  • Page 118: Measure The Temperature Of The Area Around The Photo Conductor Mechanism

    Theory of Operation Ver. 1.0 Apr. 2010 13. IMAGE TRANSFER/SEPARATION SECTION 13.3.5 Measure the temperature of the area around the photo conductor mecha- nism • The PC thermistor located immediately below the image transfer roller functions to mea- sure the temperature of the area around the photo conductor inside the main body. •...

  • Page 119: Image Transfer Roller Life Detection

    13. IMAGE TRANSFER/SEPARATION SECTION Theory of Operation Ver. 1.0 Apr. 2010 13.3.7 Image transfer roller life detection • The life counter of the image transfer roller controls detection of life of the image transfer roller. • The counter value is recorded in the service EEPROM of the main body. Controlled item Counting unit Number of printed pages produced using the...

  • Page 120: Life Value Of Image Transfer Roller

    • The life of consumables varies depending on how the user uses the machine. For details, see “3. PERIODICAL MIANTENANCE ITEMS 3.4 Concept of parts life” of Field Service. Model Excess (reaching the life value) bizhub 423/363 150,000 counts bizhub 283/223...

  • Page 121: Paper Feed Section (Manual Bypass Tray)

    14. PAPER FEED SECTION (MANUAL BYPASS TRAY) Theory of Operation Ver. 1.0 Apr. 2010 14. PAPER FEED SECTION (MANUAL BYPASS TRAY) 14.1 Configuration [12] [13] [11] [10] A1UDT2C510AA Manual multi FD sensor /3 (PS86) Manual multi FD sensor /2 (PS85) Manual multi FD sensor /1 (PS84) Paper side guide plate (front) Manual CD size sensor (VR81)

  • Page 122: 14.2 Drive

    Theory of Operation Ver. 1.0 Apr. 2010 14. PAPER FEED SECTION (MANUAL BYPASS TRAY) 14.2 Drive A1UDT2C511AA [1] Transport motor (M1) Manual paper feed clutch (CL81) [3] Manual paper feed roller Manual separation roller...

  • Page 123: 14.3 Operation

    14. PAPER FEED SECTION (MANUAL BYPASS TRAY) Theory of Operation Ver. 1.0 Apr. 2010 14.3 Operation 14.3.1 Up/down control • The paper lift-up plate is moved up and down by the transport motor. A. Up operation • The manual pick-up solenoid is energized for a predetermined period of time during rota- tion of the transport motor.
  • Page 124 Theory of Operation Ver. 1.0 Apr. 2010 14. PAPER FEED SECTION (MANUAL BYPASS TRAY) C. Operation timing (1) Move to paper feed position (up) • At the start of a manual paper feed sequence, the paper lift-up plate is raised to the paper feed position.
  • Page 125 14. PAPER FEED SECTION (MANUAL BYPASS TRAY) Theory of Operation Ver. 1.0 Apr. 2010 A1UDT2C526AA Paper lift-up cam Manual lift-up position detection plate Manual lift-up position sensor (PS83) Paper lift-up plate Standby position Paper feed position...

  • Page 126: Paper Feed Control

    Theory of Operation Ver. 1.0 Apr. 2010 14. PAPER FEED SECTION (MANUAL BYPASS TRAY) 14.3.2 Paper feed control A. Pick-up control • Paper feed operations of the manual bypass tray are driven by the transport motor. • The manual pick-up solenoid is energized by a print start signal and the paper is raised to the paper feed position.
  • Page 127 14. PAPER FEED SECTION (MANUAL BYPASS TRAY) Theory of Operation Ver. 1.0 Apr. 2010 B. Separation control • The separation roller is pressed up against, and driven by, the paper feed roller. A torque limiter is mounted on the shaft of the separation roller. •...
  • Page 128 Theory of Operation Ver. 1.0 Apr. 2010 14. PAPER FEED SECTION (MANUAL BYPASS TRAY) D. Periodically replaced parts • The paper feed roller and separation roller are periodically replaced parts. These two rollers must be replaced with new ones at the same time. •...

  • Page 129: Paper Size Detection Control

    14. PAPER FEED SECTION (MANUAL BYPASS TRAY) Theory of Operation Ver. 1.0 Apr. 2010 14.3.3 Paper size detection control • The size of the paper loaded in the manual bypass section is detected by the combina- tion of ON or OFF positions of the three manual multi FD sensors and the manual CD size sensor.
  • Page 130 Theory of Operation Ver. 1.0 Apr. 2010 14. PAPER FEED SECTION (MANUAL BYPASS TRAY) • Inch area Manual CD size sensor Paper size Manual multi Manual multi Manual multi detected FD sensor /1 FD sensor /2 FD sensor /3 Unit: mm 80 to less than 115 115 to 144 inclusive Invoice...
  • Page 131 14. PAPER FEED SECTION (MANUAL BYPASS TRAY) Theory of Operation Ver. 1.0 Apr. 2010 A1UDT2C530AA Manual multi FD sensor /3 (PS86) Manual multi FD sensor /2 (PS85) Manual multi FD sensor /1 (PS84) Manual paper empty sensor (PS82) Manual CD size sensor (VR81)

  • Page 132: Paper Empty Detection

    Theory of Operation Ver. 1.0 Apr. 2010 14. PAPER FEED SECTION (MANUAL BYPASS TRAY) 14.3.4 Paper empty detection • The manual paper empty sensor detects a paper empty condition in the manual bypass section. A1UDT2C531AA [1] Manual paper empty sensor (PS82) Actuator (Paper empty position) [3] Actuator (Paper full position)

  • Page 133: Remaining Paper Detection Control

    14. PAPER FEED SECTION (MANUAL BYPASS TRAY) Theory of Operation Ver. 1.0 Apr. 2010 14.3.5 Remaining paper detection control A. Paper near-empty control • The manual bypass tray is not mounted with any near-empty detection mechanism. B. Paper empty control (1) Paper conditions •...
  • Page 134 Theory of Operation Ver. 1.0 Apr. 2010 14. PAPER FEED SECTION (MANUAL BYPASS TRAY) (3) Manual paper detection sensor • When paper is loaded on the manual bypass tray, the manual paper detection sensor detects whether or not there is paper. If the paper lift-up plate is located at the standby position (lower position), however, the detection result is not incorporated under any of the following conditions because of the limited detection range of the manual paper detection sensor.
  • Page 135 14. PAPER FEED SECTION (MANUAL BYPASS TRAY) Theory of Operation Ver. 1.0 Apr. 2010 C. Paper empty and paper set failure displays A1UDT2E008DA...

  • Page 136: Paper Feed Section (Tray 1/Tray 2)

    [10] Tray 1 detection sensor (PS13) [11] Tray 1 lift-up motor (M11) *: Dedicated to bizhub 423. bizhub 423 has a faster paper feed speed than bizhub 363/283/ 223 and a short distance between sheets of paper. The paper feed sensor is installed for...
  • Page 137 15. PAPER FEED SECTION (TRAY 1/TRAY 2) Theory of Operation Ver. 1.0 Apr. 2010 B. Mechanical parts configuration A1UDT2C501AA Tray 1 pick-up roller Tray 1 paper feed roller Tray 1 separation roller Tray 1 paper lift-up plate Paper guide (CD) Paper guide (FD) Paper length detection plate...

  • Page 138: Tray 2

    [11] Tray 2 near empty sensor (PS24) [12] Tray 2 paper feed clutch (CL21) *1: The type of the sensor differs between bizhub 363/283/223 and bizhub 423. bizhub 423 incorporates a reflector type and, as a result, is not provided with any actuator for detecting paper feed.
  • Page 139 15. PAPER FEED SECTION (TRAY 1/TRAY 2) Theory of Operation Ver. 1.0 Apr. 2010 B. Mechanical parts configuration A1UDT2C503AA Tray 2 vertical transport roller Tray 2 paper feed roller Tray 2 separation roller Tray 2 pick-up roller Tray 2 paper lift-up plate Paper guide (CD) Paper guide (FD) Paper length detection plate...

  • Page 140: 15.2 Drive

    Theory of Operation Ver. 1.0 Apr. 2010 15. PAPER FEED SECTION (TRAY 1/TRAY 2) 15.2 Drive [11] [10] A1UDT2C504AA [1] Transport motor (M1) Tray 1 paper feed clutch (CL11) [3] Tray 2 vertical transport clutch (CL22) Tray 1 pick-up roller [5] Tray 1 paper feed roller Tray 1 separation roller [7] Tray 2 vertical transport roller...

  • Page 141: Layout Of Sensors And Rollers

    363/283/223 and bizhub 423. (The illustration shows, as an example, the loca- tion of the sensor in bizhub 423.) bizhub 423 incorporates a reflector type and, as a result, is not provided with any actua- tor for detecting paper feed.

  • Page 142: 15.3 Operation

    Theory of Operation Ver. 1.0 Apr. 2010 15. PAPER FEED SECTION (TRAY 1/TRAY 2) 15.3 Operation 15.3.1 Up/down control • Tray 1 and tray 2 are controlled in the same control procedure. A. Up operation • The paper lift-up plate B is located under the paper lift-up plate A. •...
  • Page 143 15. PAPER FEED SECTION (TRAY 1/TRAY 2) Theory of Operation Ver. 1.0 Apr. 2010 B. Down operation • When the paper feed tray is slid out of the machine, the coupling of the lift-up motor and the lift-up plate drive shaft are disconnected from each other. •...
  • Page 144 Theory of Operation Ver. 1.0 Apr. 2010 15. PAPER FEED SECTION (TRAY 1/TRAY 2) C. Operation timing (1) When the paper feed tray is slid in • When the paper feed tray is slid into the machine, the tray detection sensor is blocked. The machine then determines that the paper feed tray is slid into position.

  • Page 145: Paper Feed Control

    15. PAPER FEED SECTION (TRAY 1/TRAY 2) Theory of Operation Ver. 1.0 Apr. 2010 15.3.2 Paper feed control • Tray 1 and tray 2 are controlled in the same control procedure. A. Pick-up control • The paper feed clutch is energized after the lapse of a predetermined period of time after the print start signal.
  • Page 146 Theory of Operation Ver. 1.0 Apr. 2010 15. PAPER FEED SECTION (TRAY 1/TRAY 2) C. Paper feed roller section noise reduction mechanism • During a paper separation sequence, the paper feed roller may vibrate to produce a large operating noise. To reduce the operating noise, the rotation shaft of the paper feed roller is mounted with a paper feed roller spring.
  • Page 147 • The paper feed speed reduction control is not performed for continuous paper feeding from tray 1, because, in this case, the paper does not move past the tray 2 vertical trans- port sensor. (The paper feed sensor is mounted only on bizhub 423.) A1UDT2C977AA...
  • Page 148 For more details, see “Paper feed speed reduction control.” (The paper feed sensor is mounted on bizhub 423 only.) • When the paper fed from the tray 1 paper feed roller moves past the registration roller and reaches a predetermined position, the tray 1 paper feed clutch is deenergized to dis- connect the driving force of the transport motor.
  • Page 149 • Different models of bizhub use different types of the tray 2 vertical transport sensor. bizhub 423 incorporates a reflector type. As the paper moves past the sensor, the sensor receives a sensor light reflected off the paper. The main body thereby determines that a sheet of paper has moved past the sensor.
  • Page 150 Theory of Operation Ver. 1.0 Apr. 2010 15. PAPER FEED SECTION (TRAY 1/TRAY 2) G. Paper misfeed display NOTE • Different paper misfeed displays appear depending on the settings made in “Sys- tem 2 / JAM Code Display Setting” of the Service Mode. (1) Tray 1 (typical) A1UDT2E001DA (2) Tray 2 (typical)
  • Page 151 15. PAPER FEED SECTION (TRAY 1/TRAY 2) Theory of Operation Ver. 1.0 Apr. 2010 H. Downstream exit control during multi-print cycle • The following terms are used for convenience’ sake throughout this chapter. Upstream: Refers to the source side of paper supply relative to the paper feeding direc- tion Downstream: Refers to the destination side of paper transport relative to the paper feed- ing direction...
  • Page 152 Theory of Operation Ver. 1.0 Apr. 2010 15. PAPER FEED SECTION (TRAY 1/TRAY 2) (2) Paper pass (In the case of the tray 2) [14] [13] [12] [10] [11] A1UDT2C976AA [1] Paper exit/switchback roller Duplex transport roller/1 [3] Pressure roller Duplex unit upper transport sensor (PS92) [5] Duplex transport roller/2 Image transfer roller...
  • Page 153 15. PAPER FEED SECTION (TRAY 1/TRAY 2) Theory of Operation Ver. 1.0 Apr. 2010 (3) 1-sided printing 1. Operation 1 • In consecutive 1-sided printing, the 4th sheet causes a jamming at the paper feed tray section. [3] • The 1st sheet after an image transfer is remained at the fusing section and the paper exit section.
  • Page 154 Theory of Operation Ver. 1.0 Apr. 2010 15. PAPER FEED SECTION (TRAY 1/TRAY 2) 3. Operation 3 • Exit the 2nd sheet. [1] • Fuse the 3rd sheet to exit paper. [2] A1UDT2C984AA...
  • Page 155 15. PAPER FEED SECTION (TRAY 1/TRAY 2) Theory of Operation Ver. 1.0 Apr. 2010 (4) 2-sided printing 1. Operation 1 • In consecutive 2-sided printing, the 4th sheet causes a jamming at the paper feed tray section. [4] • The 1st sheet after a 2-sided image transfer is remained at the paper exit section.
  • Page 156 Theory of Operation Ver. 1.0 Apr. 2010 15. PAPER FEED SECTION (TRAY 1/TRAY 2) 3. Operation 3 • Exit the 2nd sheet. [1] • Stop the 3rd sheet at the duplex sec- tion. [2] A1UDT2C981AA Operation 4 • The 3rd sheet of paper left in the duplex section should be removed by opening the duplex section cover.
  • Page 157 15. PAPER FEED SECTION (TRAY 1/TRAY 2) Theory of Operation Ver. 1.0 Apr. 2010 Periodically replaced parts • The pick-up roller, paper feed roller, and separation roller are periodically replaced parts. These three rollers must be replaced with new ones at the same time. •...

  • Page 158: Paper Size Detection Control

    Theory of Operation Ver. 1.0 Apr. 2010 15. PAPER FEED SECTION (TRAY 1/TRAY 2) 15.3.3 Paper size detection control A. Main scanning direction • The size in the main scanning direction is detected based on the combination of paper CD size detect sensor/1 and paper CD size detect sensor/2 being unblocked or blocked. •...
  • Page 159 15. PAPER FEED SECTION (TRAY 1/TRAY 2) Theory of Operation Ver. 1.0 Apr. 2010 C. Paper size determination • Combination of the width of the main scanning and the length of the sub scanning will decide a paper size. Paper FD sensor board Paper CD size Paper CD size Paper size...

  • Page 160: Paper Level Detection Control

    Theory of Operation Ver. 1.0 Apr. 2010 15. PAPER FEED SECTION (TRAY 1/TRAY 2) 15.3.4 Paper level detection control • The paper level detection control is performed under any of the following conditions: “Tray 1/tray 2 is closed in position” “The up/down control of the paper lift-up plate is completed”...
  • Page 161 Upper limit sensor Unblocked A1UDT2C990AA Pick-up roller Paper feed roller Paper feed sensor (PS11/PS21) Paper empty detection plate (bizhub 423 only) (Lower position: paper empty) Paper empty sensor (PS15/PS25) Upper limit sensor (PS12/PS22) Paper empty detection plate (Upper position: paper remaining)
  • Page 162 Theory of Operation Ver. 1.0 Apr. 2010 15. PAPER FEED SECTION (TRAY 1/TRAY 2) C. Paper level display • The amount of paper is indicated by the LED on the right side of each paper feed tray and by the screen of the control panel. •...

  • Page 163: Paper Feed Tray Locking Mechanism

    15. PAPER FEED SECTION (TRAY 1/TRAY 2) Theory of Operation Ver. 1.0 Apr. 2010 15.3.5 Paper feed tray locking mechanism • The paper feed tray is provided with a locking mechanism. A. Unlocking the paper feed tray • Withdrawing the knob of the paper feed tray to the front will disengage the tray lock pawl provided on the right side of the paper feed tray.

  • Page 164: 16. Registration Section

    Theory of Operation Ver. 1.0 Apr. 2010 16. REGISTRATION SECTION 16. REGISTRATION SECTION 16.1 Configuration A1UDT2C022DA [1] Image transfer roller Registration sensor (PS1) [3] Registration roller Registration clutch (CL1) 16.2 Drive A1UDT2C023DA [1] Transport motor (M1) Registration clutch (CL1)

  • Page 165: 16.3 Operation

    16. REGISTRATION SECTION Theory of Operation Ver. 1.0 Apr. 2010 16.3 Operation 16.3.1 Registration control • The transport motor provides the drive for the registration roller. • The registration clutch is connected to the registration roller. When the registration clutch is energized, the driving force of the transport motor is transmitted to the registration roller.

  • Page 166: Registration Roller Paper Dust Remover Mechanism

    Theory of Operation Ver. 1.0 Apr. 2010 16. REGISTRATION SECTION 16.3.2 Registration roller paper dust remover mechanism • The paper dust remover is disposed so as to be in contact with the registration roller (driven side) in order to remove paper dust from the registration section. •...

  • Page 167: Paper Dust Remover Life Detection

    16. REGISTRATION SECTION Theory of Operation Ver. 1.0 Apr. 2010 16.3.4 Paper dust remover life detection • The life counter of the paper dust remover controls detection of life of the paper dust remover. • The counter value is recorded in the service EEPROM of the main body. Controlled item Counting unit Paper dust remover rotation time...

  • Page 168: Life Value Of Paper Dust Remover

    • The life of consumables varies depending on how the user uses the machine. For details, see “3. PERIODICAL MIANTENANCE ITEMS 3.4 Concept of parts life” of Field Service. Model Excess (reaching the life value) bizhub 423/363 3,921M bizhub 283/223 4,845M...

  • Page 169: 17. Fusing Section

    17. FUSING SECTION Theory of Operation Ver. 1.0 Apr. 2010 17. FUSING SECTION 17.1 Configuration A1UDT2C514AB Paper transport roller Paper transport roll Fusing separation claw Pressure roller Heating roller fusing heater lamp (FH) Heating roller thermostat (TS) Heating roller thermistor (TH2) Paper exit sensor (PS3) 17.2 Drive A1UDT2C515AA...

  • Page 170: 17.3 Operation

    Theory of Operation Ver. 1.0 Apr. 2010 17. FUSING SECTION 17.3 Operation 17.3.1 Fusing roller drive control • Drive of the fusing unit is controlled by the transport motor. • The transport motor drives the heating roller and the pressure roller is driven by the heat- ing roller.
  • Page 171 17. FUSING SECTION Theory of Operation Ver. 1.0 Apr. 2010 A. Temperature control during warm-up • Control is provided until the heating roller reaches the predetermined temperature. (1) Control start timing • The power switch is turned ON. • The main body leaves the sleep mode. •...

  • Page 172: Protection From Abnormal Temperatures

    Theory of Operation Ver. 1.0 Apr. 2010 17. FUSING SECTION 17.3.3 Protection from abnormal temperatures A. Heating roller thermistor protection (software) • The heating roller thermistors are connected via a short-circuit connector. If a connection failure occurs in the heating roller thermistor as a result of the thermistor’s not being con- nected via the short-circuit connector, a heater remote is cut off.

  • Page 173: Paper-To-Paper Distance Control

    17. FUSING SECTION Theory of Operation Ver. 1.0 Apr. 2010 17.3.5 Paper-to-paper distance control • Degraded fusing performance results due to a reduced temperature at the fusing section, if a continuous print cycle is run to produce printed pages on thick paper. To prevent this, a predetermined paper-to-paper distance is provided, thereby preventing the tempera- ture of the fusing section from decreasing and maintaining an intended level of fusing performance.
  • Page 174 Theory of Operation Ver. 1.0 Apr. 2010 17. FUSING SECTION 17.3.8 Fusing unit life detection • The life counter of the fusing unit controls detection of life of the fusing unit. • The counter value is recorded in the service EEPROM of the main body. Controlled item Counting unit Fusing unit rotation time...
  • Page 175 17. FUSING SECTION Theory of Operation Ver. 1.0 Apr. 2010 (1) Fusing unit rotation time counter life criteria State Display Criteria Normal Less than the fusing unit rotation Normal (print enabled: within image guaranteed range) time threshold Fusing unit Equal to or more than the fusing unit rotation time L code display rotation time threshold and less than...
  • Page 176 Theory of Operation Ver. 1.0 Apr. 2010 17. FUSING SECTION B. Fusing unit life display • The life reaching screen is displayed when the value of the fusing unit rotation time counter reaches the life threshold (print enabled, outside image guaranteed range). •...
  • Page 177 • The life of consumables varies depending on how the user uses the machine. For details, see “3. PERIODICAL MIANTENANCE ITEMS 3.4 Concept of parts life” of Field Service. Model Excess (reaching the life value) Replacement alarm Life stop bizhub 423 14,800 M 15,800 M 16,440 M bizhub 363 16,130 M 17,200 M...

  • Page 178: Paper Exit/Switchback Section

    Theory of Operation Ver. 1.0 Apr. 2010 18. PAPER EXIT/SWITCHBACK SECTION 18. PAPER EXIT/SWITCHBACK SECTION 18.1 Configuration/Drive A1UDT2C512AA [1] Switchback motor (M91) Paper exit/switchback roller [3] Fusing unit cooling fan motor (FM3) Paper exit/switchback roll...
  • Page 179 18. PAPER EXIT/SWITCHBACK SECTION Theory of Operation Ver. 1.0 Apr. 2010 18.2 Operation 18.2.1 Transport control A. Paper transport path • The paper exit/switchback roller is driven by the switchback motor. • The duplex transport roller 1 is driven by the duplex transport motor. •...

  • Page 180: Duplex Section

    Theory of Operation Ver. 1.0 Apr. 2010 19. DUPLEX SECTION 19. DUPLEX SECTION 19.1 Configuration/Drive A1UDT2C508AA [1] Duplex unit door sensor (PS91) Duplex transport roller 1 [3] Duplex transport roller 2 Duplex transport roller 3 [5] Duplex unit lower transport sensor (PS93) Duplex transport motor (M92) [7] Duplex unit upper transport sensor (PS92)
  • Page 181 19. DUPLEX SECTION Theory of Operation Ver. 1.0 Apr. 2010 19.2 Operation 19.2.1 Paper transport control • Paper transported from the paper exit/switchback section is transported to the internal duplex section by the duplex transport roller 1. • Paper is transported to the registration section by the duplex transport roller 2 and 3 to re-transport the paper.
  • Page 182 Theory of Operation Ver. 1.0 Apr. 2010 19. DUPLEX SECTION A. Transport roller control • The duplex transport roller 1, duplex transport roller 2 and duplex transport roller 3 are connected to duplex transport motor. When the duplex transport motor is energized, these rollers start rotating to transport paper.
  • Page 183 19. DUPLEX SECTION Theory of Operation Ver. 1.0 Apr. 2010 19.2.2 Duplex circulation control • The duplex circulation control is performed differently according to the length of the paper. Paper length Duplex circulation control Lower limit Upper limit Letter (215.9 mm) Ledger (431.8 mm) One-sheet circulation operation B5 (182 mm)
  • Page 184 Theory of Operation Ver. 1.0 Apr. 2010 19. DUPLEX SECTION Operation 4 • The main body carries out the second print cycle to produce the print image of the first page of the original [1] on the other side of the 1-sided print. A1UDT2C547AA Operation 5 •...
  • Page 185 19. DUPLEX SECTION Theory of Operation Ver. 1.0 Apr. 2010 B. Two-sheet circulation operation Operation 1 • The first sheet of paper is taken up and fed in from the main body drawer and the main body starts the first print cycle to produce the print image of the second page of the original [2].
  • Page 186 Theory of Operation Ver. 1.0 Apr. 2010 19. DUPLEX SECTION Operation 4 • The main body produces the print image of the first page of the original [1] on the first 1-sided print. • At the same time that the image of the first page of the original is printed, the third sheet of paper is taken up and fed into the main body.
  • Page 187 19. DUPLEX SECTION Theory of Operation Ver. 1.0 Apr. 2010 Operation 7 • The main body carries out the first print cycle for the second sheet of paper to produce the print image of the third page of the original [3]. •...

  • Page 188: Scanner Section Image Processing Block Diagram

    Theory of Operation Ver. 1.0 Apr. 2010 20. IMAGE PROCESSING 20. IMAGE PROCESSING 20.1 Scanner section image processing block diagram 1. Photoelectric conversion CCD sensor board 2. Analog-to-digital conversion To the MFP board • The following detail the image processing operations performed by the scanner section. 1.

  • Page 189: Write Section Image Processing Block Diagram

    20. IMAGE PROCESSING Theory of Operation Ver. 1.0 Apr. 2010 20.2 Write section image processing block diagram From scanner section MFP board 1. Shading correction 2. Line-to-line variation 16. Frame memory correction/color aberration correction 17. Output buffer memory 3. Detection of security pattern 18.
  • Page 190 Theory of Operation Ver. 1.0 Apr. 2010 20. IMAGE PROCESSING • The following detail the image processing operations performed by MFP board on the Write section. 1. Correct variations in reading caused by pixel-to-pixel variations in sensitivity of the CCD sensor and uneven light distribution by the exposure lamp. A peak-hold-type shading correction is performed, in which the maximum value of two or more read- ings of two or more lines is taken to prevent effect due to dust or dirt on the shading sheet.
  • Page 191 20. IMAGE PROCESSING Theory of Operation Ver. 1.0 Apr. 2010 21. When copying in a photo mode or making PC print, the V data is converted to the K density data. Also, the masking processing, which compensates for the deviation in the spectral reflection characteristics of the toner, and UCR/BP processing are per- formed on the image data.

  • Page 192: Power Supply Section

    Theory of Operation Ver. 1.0 Apr. 2010 21. POWER SUPPLY SECTION 21. POWER SUPPLY SECTION 21.1 Parts energized when the main power switch is turned ON 21.1.1 Configuration A1UDT2C025DA 21.1.2 Operation • When the main power switch is turned ON, power is supplied from the DC power supply unit to the following components.

  • Page 193: Parts Energized When The Sub Power Switch Is Turned On

    21. POWER SUPPLY SECTION Theory of Operation Ver. 1.0 Apr. 2010 21.2 Parts energized when the sub power switch is turned ON 21.2.1 Configuration A1UDT2C073DA 21.2.2 Operation • When the sub power switch is turned ON, MFP board detects it and sends a control sig- nal to the DC power supply through the printer control board.

  • Page 194: Power Cables

    Theory of Operation Ver. 1.0 Apr. 2010 21. POWER SUPPLY SECTION 21.3 Power cables 21.3.1 Configuration A1UDT2E018DB [1] Power code 21.3.2 Operation • The main body uses a single outlet. Power supply: 100V 15A, 110V 15A, 120V 12A, 127V 12A, 230V 8A...

  • Page 195: Fan Control

    22. FAN CONTROL Theory of Operation Ver. 1.0 Apr. 2010 22. FAN CONTROL 22.1 Configuration A1UDT2C030DB Fusing unit cooling fan motor (FM3) Cooling fan motor (FM2) Power supply cooling fan motor (FM1) Toner suction fan motor (FM4) MFP board cooling fan motor (FM5)
  • Page 196 Theory of Operation Ver. 1.0 Apr. 2010 22. FAN CONTROL 22.2 Operation 22.2.1 Function Motor name Function (purpose) Power supply cooling fan • Draws outside air into the inside of the machine to prevent the tempera- motor (FM1) ture of the DC power supply, PH section, and other parts from rising. •...
  • Page 197 22. FAN CONTROL Theory of Operation Ver. 1.0 Apr. 2010 22.2.2 Control condition Motor name Control Control conditions • The transport motor remains energized Power supply cooling fan motor (FM1) • The transport motor remains deenergized • During a predetermined period of time after the ON (high speed) completion of a warm-up cycle •...

  • Page 198: Counter Information

    Theory of Operation Ver. 1.0 Apr. 2010 23. COUNTER INFORMATION 23. COUNTER INFORMATION 23.1 Configuration A1UDT2C069DB [1] Printer control board (PRCB) Electronic counter [3] Total counter MFP board (MFPB) [5] Key counter (option) Name Function • Shows the cumulative number of copies made in all copy modes Total counter •...
  • Page 199 23. COUNTER INFORMATION Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 200: Theory Of Operation

    SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...

  • Page 201: Revision History

    Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
  • Page 202 Theory of Operation Ver. 1.0 Apr. 2010 CONTENTS DF-621 OUTLINE PRODUCT SPECIFICATIONS ................1 PAPRE FEED PATH ....................4 In 1-sided mode ....................4 In 2-sided mode ....................5 CONFIGURATION/OPERATION CONFIGURATION ....................7 Section configuration .................... 7 Electrical parts configuration ................8 DRIVE ........................
  • Page 203 Theory of Operation Ver. 1.0 Apr. 2010 Raised/lowered position detection mechanism ..........39 5.7.1 Document exchange detection control............39 5.7.2 DF raised/lowered position detection mechanism ........39 Cooling inside the unit ..................40...

  • Page 204: Outline

    Theory of Operation Ver. 1.0 Apr. 2010 1. PRODUCT SPECIFICATIONS OUTLINE PRODUCT SPECIFICATIONS A. Type Name Reverse automatic document feeder Feeding order Forward Feed section Paper feed from top of stack Type Switchback section Switch back system Exit section Straight exit system Installation Screw cramp to the main body Document alignment...
  • Page 205 1. PRODUCT SPECIFICATIONS Theory of Operation Ver. 1.0 Apr. 2010 D. Paper feed prohibited originals • If fed, trouble occurrence will be highly possible. Type of original Possible trouble Feed failure, damaged sheet, or drive failure due to Original that is stapled or clipped. clip clogging Book original Feed failure, damaged sheet, or drive failure...
  • Page 206 Theory of Operation Ver. 1.0 Apr. 2010 1. PRODUCT SPECIFICATIONS F. Mixed original feed chart For metric Max. original 297 mm 257 mm 210 mm size Mixed original size 297 mm 257 mm 210 mm 182 mm 148 mm 128 mm For inch Max.

  • Page 207: Papre Feed Path

    2. PAPRE FEED PATH Theory of Operation Ver. 1.0 Apr. 2010 PAPRE FEED PATH In 1-sided mode [10] [11] [17] [16] [12] [14] [15] [13] A143T1C500AA Document feed path Document set sensor (PS1) Document pick-up roller Document separation roller Separation roller sensor (PS2) Document registration path Document registration sensor (PS3) Document registration roller...

  • Page 208: In 2-Sided Mode

    Theory of Operation Ver. 1.0 Apr. 2010 2. PAPRE FEED PATH In 2-sided mode [3/7] [5/9] [4/8] A143T1C501AA [1] Document feed path Document registration path [3] Document transport path (1st side) Document reading path (1st side) [5] Document switchback path (switchback) Document second feed path (2nd side) [7] Document transport path (2nd side) Document reading path (2nd side)
  • Page 209 2. PAPRE FEED PATH Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 210: Configuration/Operation

    Theory of Operation Ver. 1.0 Apr. 2010 3. CONFIGURATION CONFIGURATION/OPERATION CONFIGURATION Section configuration A143T1C502AA [1] Document set section Document feed section [3] Document registration section Document transport section [5] Document reading section Document exit /switchback section [7] Document second feed section Document exit tray section...

  • Page 211: Electrical Parts Configuration

    3. CONFIGURATION Theory of Operation Ver. 1.0 Apr. 2010 Electrical parts configuration [25] [24] [23] [22] [21] [10] [11] [12] [13] [14] [15] [20] [16] [19] [17] [18] A143T2C500AA Document set sensor (PS1) DF control board (DFCB) DF cooling fan motor (FM1) Document exit roller release solenoid (SD1) Document feed motor (M2) Document feed clutch (CL1)

  • Page 212: Drive

    Theory of Operation Ver. 1.0 Apr. 2010 4. DRIVE DRIVE Paper feed drive A143T2C501AA [1] Document pick-up roller Document feed motor (M2) [3] Document feed clutch (CL1) Document registration clutch (CL2) [5] Document registration roll Document registration roller [7] Document separation roller Document feed roller •...

  • Page 213: Transport/Paper Exit Drive

    4. DRIVE Theory of Operation Ver. 1.0 Apr. 2010 Transport/paper exit drive [10] A143T2C502AA Document exit roller Document exit roll Document exit roller release solenoid (SD1) Document reading motor (M1) Reading roller release motor (M3) Document reading roll Document reading roller/1 Original glass cleaning roller Document reading roller/2 [10] Glass cleaning motor (M4)

  • Page 214: Original Glass Cleaning Drive

    Theory of Operation Ver. 1.0 Apr. 2010 4. DRIVE Original glass cleaning drive A143T2C503AA [1] Glass cleaning motor (M4) Original glass cleaning roller • The glass cleaning motor drives the original glass cleaning roller.

  • Page 215: Operation

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 OPERATION Document set section 5.1.1 Original size detection mechanism A143T2C504AA Document FD size sensor/1 (PS6) Document FD size sensor/3 (PS8) Document feed tray Document FD size sensor/2 (PS7) Document CD size sensor (VR1) Mixed original sensor/3 (PS11) Mixed original sensor/2 (PS10) Mixed original sensor/1 (PS9)
  • Page 216 Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION A. Detecting the width of the original 1 • The width of the original will be detected by the document CD size sensor under the doc- ument feed tray. • When the document guide plates are moved in or out crosswise to fit the size of the orig- inal, the size detection gear is rotated, so that the detection portion of the document CD size sensor mounted on the same shaft as the gear is rotated.
  • Page 217 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 E. Original size detection • The original size is determined by the combination of the results of detection made of the width and length of the original. (1) Standard mode Metric area Document FD size sensor Document CD size sensor Original size detected...
  • Page 218 Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION Inch area Document FD size sensor Document CD size sensor Original size detected Unit: mm Over 286.2 and up to 307 Over 194 and up to 236.5 Over 286.2 and up to 307 Over 236.5 and up to 266.2 Over 158.7 and up to 194 Over 236.5 and up to 266.2...
  • Page 219 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 (2) Mixed original mode Metric area Document CD size Reading roller sensor Document FD size sensor sensor (Paper length) Original size detected Unit: mm Unit: mm Over 214 Over 186 and up to Over 286.2 Over 152 and up to 152 or under...
  • Page 220 Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION Inch area Document CD size Reading roller sensor Document FD size sensor sensor (Paper length) Original size detected Unit: mm Unit: mm Over 261 Over 286.2 Over 214 and up to 214 or under Ledger (11 x 17) Over 284...
  • Page 221 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 China area Document CD size Reading roller sensor Document FD size sensor sensor (Paper length) Original size detected Unit: mm Unit: mm 8K (270 mm x 390 mm) Over 214 Over 199 and up to Over 281 Over 152 and up to 16K (195 mm x 270 mm)

  • Page 222: Original Set Detection Control

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION 5.1.2 Original set detection control • When original is loaded on the document feed tray, the document set sensor detects whether or not there is original. • If no original is loaded when the document pick-up roller is in the standby position, the document set sensor actuator blocks the document set sensor and it is determined that no original is loaded.

  • Page 223: Document Feed Section

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 Document feed section • The document feed section consists of the document pick-up rollers, document feed roller and document separation roller. • The document feed motor provides the device for the document pick-up section. •...

  • Page 224: Document Feed/Separation Control

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION 5.2.2 Document feed/separation control • When the start key is pressed, the document feed motor starts rotating forward and the document feed clutch is energized, so that the document feed roller rotates forward (in the direction of feeding the original).
  • Page 225 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 B. Periodically replaced parts • The document pick-up roller, document feed roller, and document separation roller are periodically replaced parts. These three rollers must be replaced with new ones at the same time.

  • Page 226: Document Registration Section

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION Document registration section • The document feed motor provides the drive for the document registration roller. • The document registration clutch is connected to the document registration roller. When the document registration clutch is energized, the driving force of the document feed motor is transmitted to the document registration roller.

  • Page 227: Document Reading Section

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 Document reading section • The document reading motor provides the drive for the document reading roller/1 and 2, and document exit roller. • The original transported from the document registration section will be transported to the document exit/switchback section by the document reading roller/1 and 2, and the docu- ment exit roller.

  • Page 228: Document Reading Roller Pressure/Release Control

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION 5.4.1 Document reading roller pressure/release control • When the trailing edge of the original moves past the document reading roller/1, the doc- ument reading roller/1 acts to push the original, so that the document transport speed increases instantaneously.

  • Page 229: Df Original Glass Contamination Prevention Control

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 5.4.2 DF original glass contamination prevention control A. DF original glass cleaning • A line can occur in the image read from the original if the DF original glass is contami- nated with dust or dirt.
  • Page 230 Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION B. DF original glass cleaning operation Condition Cleaning operation Sub power switch ON Rotates the original glass cleaning brush one complete turn to Predrive check for its correct operation. (forward rotation) Existing from sleep Rotates the original glass cleaning brush one complete turn to Before starting reading...

  • Page 231: Document Exit Section

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 *2: Feed cleaning settings screen A143T2E002DA Document exit section • The document reading motor provides the drive for the document exit roller. (the same drive source as that for the document reading section) •...
  • Page 232 Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION [10] [12] [11] [10] A143T2C511AA [1] Document exit roller Document registration sensor (PS3) [3] Document registration roller Document reading roll [5] Document reading roller/1 Document exit sensor (PS5) [7] Document reading roller/2 Document exit sensor actuator [9] Paper guide [10] Document exit roll...

  • Page 233: Document Switchback/Second Feed Control (In The 2-Sided Mode Only)

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 5.5.1 Document switchback/second feed control (in the 2-sided mode only) • When the leading edge of the original moves past the document reading roller/2, the document exit sensor disposed downstream of the roller is blocked, which detects the leading edge of the original.

  • Page 234: Document 2Nd Side Registration Control (In The 2-Sided Mode Only)

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION 5.5.2 Document 2nd side registration control (in the 2-sided mode only) • When the original reaches the document registration roller, the document registration sensor detects the leading edge of the 2nd side of the original. •...
  • Page 235 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 A143T2C510AA Document exit roller Document registration roller Document reading roller/1 Document exit roll Document exit roller release solenoid (SD1)

  • Page 236: Faxed Document Stamp Function

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION 5.5.4 Faxed document stamp function • Mounting the optional “Stamp unit SP-501” allows a stamp to be placed on a faxed docu- ment. • The stamp solenoid located upstream of the document exit roller is energized when the original is about to be fed out and the stamp mounted on the solenoid plunger is pressed ⊕...
  • Page 237 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 *2: TX Stamp setting screen A143T2E004DA...

  • Page 238: Original Feed Operation

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION Original feed operation A. Document transport operation flow in the 1-sided mode [10] A143T2C006DA [1] Document pick-up roller Document feed roller/ Document separation roller [3] Document registration sensor (SP3) Document registration roller [5] Document reading roller/1 Reading roller sensor (PS4) [7] Original glass cleaning roller...
  • Page 239 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 B. Document transport operation flow in the 2-sided mode • Operation in the 2-sided mode consists of the three processes of “Reading the 1st side”, “Reading the 2nd side”, and “Rearranging the original in order of page numbers” (so that the original is fed through the DF a total of three times).
  • Page 240 Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION (2) Reading the 2nd side of the 2-sided original A143T2C007DA [1] Document pick-up roller Document feed roller/ Document separation roller [3] Document registration sensor (SP3) Document registration roller [5] Document reading roller/1 Reading roller sensor (PS4) [7] Document exit sensor (PS5) Document reading roller/2...
  • Page 241 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 (3) Rearranging the original in order of page numbers • When the 2nd side of the original is read, the original is turned over and fed through the DF. If the original is fed out directly into the document exit tray, the order of page numbers of the original becomes out of correct order.

  • Page 242: Raised/Lowered Position Detection Mechanism

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION Raised/lowered position detection mechanism 5.7.1 Document exchange detection control • An angle detection mechanism is provided to detect the operation of exchanging origi- nals when the DF is used as the original cover of the main body. •...

  • Page 243: Cooling Inside The Unit

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 Cooling inside the unit • The DF cooling fan motor functions to cool the DF control board, document feed motor, and document reading motor in the DF. • It discharges heat generated inside the DF out through the exhaust port. A143T2C013DA DF control board (DFCB) DF cooling fan motor (FM1)

  • Page 244: Theory Of Operation

    SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...

  • Page 245: Revision History

    Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
  • Page 246 Theory of Operation Ver. 1.0 Apr. 2010 CONTENTS PC-109/PC-208 OUTLINE PRODUCT SPECIFICATIONS ................1 PAPRE FEED PATH ....................2 CONFIGURATION/OPERATION CONFIGURATION ....................3 Electrical parts configuration ................3 Mechanical parts configuration................4 DRIVE ........................5 MECHANISM ......................6 Operation ......................6 5.1.1 Up/down control ....................
  • Page 247 Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 248: Product Specifications

    Theory of Operation Ver. 1.0 Apr. 2010 1. PRODUCT SPECIFICATIONS OUTLINE PRODUCT SPECIFICATIONS A. Type Name 1 way paper feed cabinet / 2 way paper feed cabinet Type Front loading type 1 way paper feed device / 2 way paper feed device Installation Desk type Document alignment...

  • Page 249: Papre Feed Path

    2. PAPRE FEED PATH Theory of Operation Ver. 1.0 Apr. 2010 PAPRE FEED PATH A1V4T1C001DA Paper feed from the 3rd tray Transportation to main body Transportation in PC Paper feed from the 4th tray...

  • Page 250: Configuration/Operation

    Theory of Operation Ver. 1.0 Apr. 2010 3. CONFIGURATION CONFIGURATION/OPERATION CONFIGURATION Electrical parts configuration [1] [2] [21] [22] [23] [20] [19] [18] [17] [16] [15] [14] [10] [13] [12] [11] A1V4T2C500AA [1] Right lower door sensor (PS39) Tray3 upper limit sensor (PS33) [3] Tray3 vertical transport sensor (PS36) Tray4 vertical transport sensor (PS46) [5] Tray3 paper empty sensor (PS34)

  • Page 251: Mechanical Parts Configuration

    3. CONFIGURATION Theory of Operation Ver. 1.0 Apr. 2010 Mechanical parts configuration [13] [12] [11] [10] A1V4T2C501AA Tray 3 vertical transport roller Tray 3 vertical transport roll Tray 3 separation roller Tray 4 vertical transport roll Tray 3 paper guide (CD) Tray 4 vertical transport roller Tray 4 paper guide (CD) Tray 4 paper lift-up plate...

  • Page 252: Drive

    Theory of Operation Ver. 1.0 Apr. 2010 4. DRIVE DRIVE [13] [14] [12] [11] [10] A1V4T2C502AA [1] Tray 3 vertical transport roller Tray 3 vertical transport roll [3] Tray 3 paper feed roller Tray 3 separation roller [5] Tray 4 vertical transport roll Tray 4 vertical transport roller [7] Tray 4 paper feed roller Tray 4 separation roller...

  • Page 253: Mechanism

    5. MECHANISM Theory of Operation Ver. 1.0 Apr. 2010 MECHANISM Operation 5.1.1 Up/down control • The tray 3 and tray 4 are controlled in the same control procedure. A. Up operation • The paper lift-up plate B is located under the paper lift-up plate A. •...
  • Page 254 Theory of Operation Ver. 1.0 Apr. 2010 5. MECHANISM (1) Upper position A1V4T2C999AB [1] Actuator of upper limit Upper position Light blocking plate of Lower position sensor (paper full) upper limit sensor (unblocked) [3] Paper lift-up plate A Upper position Unblocked Upper limit sensor (PS33/PS43)
  • Page 255 5. MECHANISM Theory of Operation Ver. 1.0 Apr. 2010 B. Down operation • When the paper feed tray is slid out of the machine, the coupling of the lift-up motor and the lift-up plate drive shaft are disconnected from each other. •...
  • Page 256 Theory of Operation Ver. 1.0 Apr. 2010 5. MECHANISM C. Operation timing (1) When the paper feed tray is slid in • When the paper feed tray is slid into the machine, the tray detection sensor is blocked. The machine then determines that the paper feed tray is slid into position. •...

  • Page 257: Paper Feed Control

    5. MECHANISM Theory of Operation Ver. 1.0 Apr. 2010 5.1.2 Paper feed control • The tray 3 and tray 4 are controlled in the same control procedure. A. Pick-up control • The paper feed motor is energized after the lapse of a predetermined period of time after the print start signal.
  • Page 258 Theory of Operation Ver. 1.0 Apr. 2010 5. MECHANISM C. Paper feed retry control • If the specified sensor is unable to detect the paper even after the lapse of a predeter- mined period of time after the start of the paper feed sequence, the machine determines that there is a paper misfeed.
  • Page 259 5. MECHANISM Theory of Operation Ver. 1.0 Apr. 2010 D. Paper feed control (1) Paper transport path [17] [16] [15] [14] [13] [12] [11] [10] A1V4T2C507AA Registration roller Registration sensor (PS1) Paper transport to registration section Paper transport in tray 2 vertical transport section Tray 4 Paper transport in tray 3/4 vertical transport...
  • Page 260 Theory of Operation Ver. 1.0 Apr. 2010 5. MECHANISM (2) Tray 3 • The tray 3 paper feed roller feeds the paper onto the tray 3 vertical transport roller. • The tray3 vertical transport sensor located downstream of the tray 3 vertical transport roller detects the paper fed from the tray 3 paper feed roller.
  • Page 261 5. MECHANISM Theory of Operation Ver. 1.0 Apr. 2010 (3) Tray 4 • The tray 4 paper feed roller feeds the paper onto the tray 4 vertical transport roller. • The tray4 vertical transport sensor located downstream of the tray 4 vertical transport roller detects the paper fed from the tray 4 paper feed roller.
  • Page 262 Theory of Operation Ver. 1.0 Apr. 2010 5. MECHANISM E. Paper misfeed display NOTE • Different paper misfeed displays appear depending on the settings made in “Sys- tem 2/ JAM Code Display Setting” of the Service Mode. (1) Tray3 (typical) A1V4T2E003DA (2) Tray4 (typical) A1V4T2E004DA...
  • Page 263 5. MECHANISM Theory of Operation Ver. 1.0 Apr. 2010 F. Periodically replaced parts • The pick-up roller, paper feed roller, and separation roller are periodically replaced parts. These three rollers must be replaced with new ones at the same time. •...

  • Page 264: Paper Size Detection Control

    Theory of Operation Ver. 1.0 Apr. 2010 5. MECHANISM 5.1.3 Paper size detection control A. Main scanning direction • The size in the main scanning direction is detected based on the combination of CD paper size sensor/1 and CD paper size sensor/2 being unblocked or blocked. •...
  • Page 265 5. MECHANISM Theory of Operation Ver. 1.0 Apr. 2010 C. Paper size determination • Combination of the width of the main scanning and the length of the sub scanning will decide a paper size. Paper FD sensor board Paper CD size Paper CD size Paper size detect sensor/1...

  • Page 266: Paper Level Detection Control

    Theory of Operation Ver. 1.0 Apr. 2010 5. MECHANISM 5.1.4 Paper level detection control • The paper level detection control is performed under any of the following conditions: “Tray 3/tray 4 is closed in position” “The up/down control of the paper lift-up plate is completed” A.
  • Page 267 5. MECHANISM Theory of Operation Ver. 1.0 Apr. 2010 B. Paper empty detection • The tray 3 and tray 4 use the same control system to detect a paper empty condition. • A paper empty condition is detected by the tray detection sensor, upper limit sensor, and paper empty sensor.
  • Page 268 Theory of Operation Ver. 1.0 Apr. 2010 5. MECHANISM C. Paper level display • The paper level is indicated by the LED on the right side of each paper feed tray and by the screen of the control panel. • The following shows how the paper level is displayed. Other statuses Paper feed tray Empty...

  • Page 269: Paper Feed Tray Locking Mechanism

    5. MECHANISM Theory of Operation Ver. 1.0 Apr. 2010 5.1.5 Paper feed tray locking mechanism • The paper feed tray is provided with a locking mechanism. A. Unlocking the paper feed tray • Withdrawing the knob of the paper feed tray to the front will disengage the tray lock pawl provided on the right side of the paper feed tray.

  • Page 270: Theory Of Operation

    SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...

  • Page 271: Revision History

    Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
  • Page 272 Theory of Operation Ver. 1.0 Apr. 2010 CONTENTS PC-409 OUTLINE PRODUCT SPECIFICATIONS ................1 PAPRE FEED PATH ....................2 CONFIGURATION/OPERATION CONFIGURATION ....................3 Section configuration .................... 3 Electrical parts configuration ................4 Mechanical parts configuration................5 OPERATION ......................6 Up/down control....................6 4.1.1 Up operation ....................
  • Page 273 Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 274: Product Specifications

    Theory of Operation Ver. 1.0 Apr. 2010 1. PRODUCT SPECIFICATIONS OUTLINE PRODUCT SPECIFICATIONS A. Type Name Large capacity cabinet Type Front loading type LCC Installation Desk type Document alignment Center B. Paper Type Size Capacity Plain paper Metric area: A4, 2,500 sheets (60 to 90 g/m (16 to 24 lb))

  • Page 275: Papre Feed Path

    2. PAPRE FEED PATH Theory of Operation Ver. 1.0 Apr. 2010 PAPRE FEED PATH A1V4T1C002DA Paper feed from LCC Transportation to main body Main tray Move from the shift tray to the main tray Shift tray...

  • Page 276: Configuration/Operation

    Theory of Operation Ver. 1.0 Apr. 2010 3. CONFIGURATION CONFIGURATION/OPERATION CONFIGURATION Section configuration A1V4T2C509AA [1] Paper feed section Main tray section [3] Shift tray section...

  • Page 277: Electrical Parts Configuration

    3. CONFIGURATION Theory of Operation Ver. 1.0 Apr. 2010 Electrical parts configuration [25] [24] [23] [22] [10] [21] [11] [12] [20] [13] [14] [19] [15] [16] [18] [17] A1V4T2C510AA Paper feed motor (M51) Vertical transport motor (M52) Right lower door sensor (PS55) Vertical transport sensor (PS52) Lift-up upper limit sensor (PS54) Paper feed sensor (PS51)

  • Page 278: Mechanical Parts Configuration

    Theory of Operation Ver. 1.0 Apr. 2010 3. CONFIGURATION Mechanical parts configuration [21] [20] [19] [18] [17] [16] [10] [15] [14] [11] [13] [12] A1V4T2C511AA [1] Paper feed motor (M51) Vertical transport motor (M52) [3] Tray 3 vertical transport roller Paper feed roller [5] Separation roller Pick-up roller...

  • Page 279: Operation

    4. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 OPERATION Up/down control 4.1.1 Up operation • A lifting cable is connected to the main tray and the main tray is held in the horizontal position by the elevator take-up axis. •...

  • Page 280: Operation Timing

    Theory of Operation Ver. 1.0 Apr. 2010 4. OPERATION 4.1.3 Operation timing A. When the paper feed tray is slid in • When the paper feed tray is slid into the machine, the tray detection sensor is blocked. The machine then determines that the paper feed tray is slid in position. •...
  • Page 281 4. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 B. During a print cycle • As paper is consumed, the pick-up roller gradually lowers and the lift-up upper limit sen- sor is unblocked. • Determining that the lift-up upper limit sensor is unblocked, the machine lets the elevator motor rotate forward to start the up operation of the main tray.
  • Page 282 Theory of Operation Ver. 1.0 Apr. 2010 4. OPERATION [10] A1V4T2C515AA [1] Main tray Lift-down lower limit sensor (PS5D) [3] Elevator motor (M55) Lift-down over run sensor (PS57) [5] Elevator take-up axis Paper feed tray [7] Manual down key Tray lock lever (Manual down control board MDCB) [9] Tray unlock hole [10] Tray lock solenoid (SD51)

  • Page 283: Paper Feed Control

    4. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 Paper feed control 4.2.1 Pick-up control • The paper feed motor is energized by the print start signal. • The pick-up roller and paper feed roller pick up a sheet of paper and transports it onto the paper feed roller by the driving force of the paper feed motor.

  • Page 284: Separation Control

    Theory of Operation Ver. 1.0 Apr. 2010 4. OPERATION 4.2.2 Separation control • The separation roller is driven via a torque limiter in the direction opposite the paper transport direction. • The separation roller is pressed against the paper feed roller by the operating pressure generated by pressure of the spring and torque of the torque limiter.

  • Page 285: Paper Level Detection Control

    4. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 4.2.3 Paper level detection control A. Paper near-empty detection of the main tray • The paper level of the main tray is determined by counting the number of times the eleva- tor motor sensor is activated/deactivated.

  • Page 286: Paper Empty Detection

    Theory of Operation Ver. 1.0 Apr. 2010 4. OPERATION 4.2.4 Paper empty detection A. Paper empty detection of the main tray • The main tray paper empty board and paper empty sensor detect a paper empty condi- tion of the main tray. •...

  • Page 287: Paper Shift Control

    4. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 Paper shift control 4.3.1 Overview of paper shift operation • When a paper empty condition of the main tray is detected, the shifter is operated and the paper stack loaded in the shift tray is moved onto the main tray. A.

  • Page 288: Shifter Drive Mechanism

    Theory of Operation Ver. 1.0 Apr. 2010 4. OPERATION 4.3.3 Shifter drive mechanism • The shift motor drives the shifter. • When the shift motor rotates forward, the shifter drive belt rotates, so that the shifter moves from the home position to the stop position. When the shift motor rotates back- ward, the shifter moves from the stop position to the home position.

  • Page 289: Paper Misfeed Display

    4. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 Paper misfeed display NOTE • Different paper misfeed displays appear depending on the settings made in “Sys- tem 2/ JAM Code Display Setting” of the Service Mode. (1) Tray3 (typical) A1V4T2E011DA (2) System 2/ JAM Code Display Setting A1UDT2E003DA...

  • Page 290: Paper Level Display

    Theory of Operation Ver. 1.0 Apr. 2010 4. OPERATION Paper level display • The paper level is indicated by the LED on the right side of each paper feed tray and by the screen of the control panel. • The following shows how the paper level is displayed. Other statuses Paper feed tray Empty...

  • Page 291: Periodically Replaced Parts

    4. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 Periodically replaced parts • The pick-up roller, paper feed roller, and separation roller are periodically replaced parts. These three rollers must be replaced with new ones at the same time. • None of the pick-up roller, paper feed roller, and separation roller is provided with a new article detection mechanism.

  • Page 292: Theory Of Operation

    SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...

  • Page 293: Revision History

    Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
  • Page 294 Theory of Operation Ver. 1.0 Apr. 2010 CONTENTS JS-505 OUTLINE PRODUCT SPECIFICATIONS ................1 PAPER PATH......................3 Exit to the lower tray ..................... 3 Exit to the sub tray ....................3 CONFIGURATION/OPERATION CONFIGURATION ....................5 DRIVE ........................6 OPERATION ......................7 Transport/exit section....................
  • Page 295 Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 296: Product Specifications

    Theory of Operation Ver. 1.0 Apr. 2010 1. PRODUCT SPECIFICATIONS OUTLINE PRODUCT SPECIFICATIONS A. Type Type Built-in type 2-bin stacker Installation Installed in main body Document align- Center ment B. Functions Modes Sort, group, sort offset, group offset C. Paper Exit tray Size Type...
  • Page 297 1. PRODUCT SPECIFICATIONS Theory of Operation Ver. 1.0 Apr. 2010 D. Offset function Exit tray Lower tray Shift amount 30 mm Types of paper to Plain paper, Thick paper 1/2/3/4 be used B5S/B5, A4S/A4, B4, A3 Size X 11S/8- X 11, 8- X 14, 11 X 17 E.

  • Page 298: Paper Path

    Theory of Operation Ver. 1.0 Apr. 2010 2. PAPER PATH PAPER PATH Exit to the lower tray A083T1C501AA Exit to the sub tray A083T1C502AA...
  • Page 299 2. PAPER PATH Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 300: Configuration/Operation

    Theory of Operation Ver. 1.0 Apr. 2010 3. CONFIGURATION CONFIGURATION/OPERATION CONFIGURATION A083T2C519AA A083T1C503AA Upper tray Transport path switching mechanism Lower tray Paper shift mechanism A083T2C501AA...

  • Page 301: Drive

    4. DRIVE Theory of Operation Ver. 1.0 Apr. 2010 DRIVE JS control board (JSCB) Transport motor (M1) Retraction motor (M3) Upper tray exit roller Lower tray exit roller Shift motor (M2) A083T2C507AA...

  • Page 302: Operation

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION OPERATION Transport/exit section 5.1.1 Paper transport • Drive from the transport motor causes the corresponding exit roller to rotate, thereby transporting the paper into the main or upper tray. • The transport motor is energized a predetermined period of time after the paper has acti- vated the paper exit sensor of the copier.

  • Page 303: Transport Path Switching

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 5.1.2 Transport path switching • The paper transport path is adequately switched to ensure that the paper is transported properly into the main or upper tray as necessary. • The retraction motor is energized to operate the paper path switching guide, so that the paper is directed into the correct tray.
  • Page 304 Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION B. Operation • The retraction motor is used to swing up or down the paper path switching guide. The retraction motor, when energized, swings the paper path switching guide up or down. •...
  • Page 305 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 (2) Operation from the lowered position (exit to lower tray) to the raised position (exit to upper tray) 1. The predrive sequence is run (only when the copier is turned or released from the sleep mode, or a malfunction is reset).
  • Page 306 Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION (3) Paper exit into the upper tray 1. The predrive sequence is run (only when the copier is turned or released from the sleep mode, or a malfunction is reset). 2. The exit position of the tray is determined according to whether the retraction home sensor is blocked or unblocked.

  • Page 307: Full-Of-Paper Detecting Mechanism

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 5.1.3 Full-of-paper detecting mechanism • Each tray is mounted with a tray paper full detect board that detects a full-of-paper condi- tion of the tray. • The tray paper full detect board consists of an LED and a PR (photoreceiver). When the paper stack blocks the LED light for a predetermined period of time, it is determined that the tray is in the full-of-paper condition.

  • Page 308: Lower Tray Exit Roller Pressure/Retraction

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION 5.1.4 Lower tray exit roller pressure/retraction • The lower tray is provided with an exit roller pressure/retraction mechanism that allows paper to be temporarily fed into the lower tray when a 2-sided print cycle is commanded. •...
  • Page 309 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 B. Exit roller pressure/retraction operation • When the roller pressure/retraction clutch is energized, the lifting cam is rotated a half turn. The lifting plate is then raised and lowered to complete a pressure/retraction opera- tion.

  • Page 310: Paper Shift Section

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION Paper shift section 5.2.1 Paper shift mechanism • The exit roller is shifted its position during paper exit so that print jobs can be offset, one job from another. • To offset print jobs, the shift section is moved. •...

  • Page 311: Shift Operation Overview

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 5.2.2 Shift operation overview • At a predetermined timing during paper exit into the lower tray, the shift motor is ener- gized to slide the shift section in a direction perpendicular to the feeding direction. •...

  • Page 312: Theory Of Operation

    SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...

  • Page 313: Revision History

    Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
  • Page 314 Theory of Operation Ver. 1.0 Apr. 2010 CONTENTS FS-527 OUTLINE PRODUCT SPECIFICATIONS ................1 PAPER FEED PATH ....................4 Tray1 ........................4 Tray2 ........................5 Stapling......................... 6 CONFIGURATION/OPERATION CONFIGURATION ....................7 HORIZONTAL CONVEYANCE SECTION............... 8 Configuration ......................8 Horizontal conveyance mechanism ..............9 4.2.1 Paper conveyance..................
  • Page 315 Theory of Operation Ver. 1.0 Apr. 2010 STAPLER ......................28 Drive ........................28 Operation......................29 8.2.1 Stapler movement..................29 8.2.2 Stapler control..................... 30...

  • Page 316: Product Specifications

    Theory of Operation Ver. 1.0 Apr. 2010 1. PRODUCT SPECIFICATIONS OUTLINE PRODUCT SPECIFICATIONS A. Type Name Multi staple finisher Type Freestanding Document Center alignment Consumables Staples B. Functions Modes Sort, group, offset, group offset, sort staple C. Paper type (1) Non sort/sort/group Type Size Weight...
  • Page 317 1. PRODUCT SPECIFICATIONS Theory of Operation Ver. 1.0 Apr. 2010 (2) Sort offset/group offset Type Size Weight Max. capacity A5, B5S/B5, A4S/A4, B4, A4S, 8 x 11S 3000 A3, A3Wide sheets * or less Plain paper x 11S/8 x 11, B4, 8 x 14 60 to 90 g/m...
  • Page 318 Theory of Operation Ver. 1.0 Apr. 2010 1. PRODUCT SPECIFICATIONS D. Stapling Staple filling mode Dedicated staple cartridge (5000 staples) Back/Front of the corner A4, A3 (45 degree) x 11, 11 x 17 Back/Front of the corner B5, B4 (35 degree) Stapling position Back/Front of the corner A4S, B5S, A5...

  • Page 319: Paper Feed Path

    2. PAPER FEED PATH Theory of Operation Ver. 1.0 Apr. 2010 PAPER FEED PATH Tray1 Tray1 Paper path from the horizontal conveyance unit Tray1 exit roller Tray1 path switching gate A0HRT1C001DB...

  • Page 320: Tray2

    Theory of Operation Ver. 1.0 Apr. 2010 2. PAPER FEED PATH Tray2 Bypass route Upper lower path switching gate Tray2 Paper path from the horizontal conveyance unit A0HRT1C002DB...

  • Page 321: Stapling

    2. PAPER FEED PATH Theory of Operation Ver. 1.0 Apr. 2010 Stapling Bypass route Upper lower path switching gate Tray2 Paper path from the horizontal conveyance unit Tray2 exit roller Alignment section Stapler A0HRT1C003DB...

  • Page 322: Configuration/Operation

    Theory of Operation Ver. 1.0 Apr. 2010 3. CONFIGURATION CONFIGURATION/OPERATION CONFIGURATION • The following sections are combined in a single unit: the horizontal conveyance section, conveyance section, alignment section, tray1, tray2, and stapler section. Tray1 Horizontal conveyance Alignment section Conveyance section section Tray2 Stapler section...

  • Page 323: Horizontal Conveyance Section

    4. HORIZONTAL CONVEYANCE SECTION Theory of Operation Ver. 1.0 Apr. 2010 HORIZONTAL CONVEYANCE SECTION Configuration • The horizontal conveyance section is composed of the duplex path switching sensor, paper passage sensor/1, horizontal conveyance cover sensor, paper passage sensor/2, paper passage motor/1, and duplex path switching motor. Duplex path switching motor (M2) Duplex path switching sensor (PS3) Paper passage...

  • Page 324: Horizontal Conveyance Mechanism

    Theory of Operation Ver. 1.0 Apr. 2010 4. HORIZONTAL CONVEYANCE SECTION Horizontal conveyance mechanism 4.2.1 Paper conveyance • The horizontal conveyance section conveys paper fed out from the main body to the fin- isher. • The paper passage motor/1 provides drive for the conveyance rollers. •...

  • Page 325: Conveyance Path Switching Motor Mechanism

    4. HORIZONTAL CONVEYANCE SECTION Theory of Operation Ver. 1.0 Apr. 2010 4.2.2 Conveyance path switching motor mechanism • The horizontal conveyance section is provided with a paper path switching mechanism for conveying paper fed from the fusing section onto the duplex section or tray 3 (when another option of JS-603 is mounted).

  • Page 326: Conveyance Section

    Theory of Operation Ver. 1.0 Apr. 2010 5. CONVEYANCE SECTION CONVEYANCE SECTION Configuration Tray1 exit roller Paper passage motor/2 (M3) Registration roller Switchback roller Tray2 exit roller Conveyance motor (M4) Exit motor (M5) A0HRT2C025DA...

  • Page 327: Drive

    5. CONVEYANCE SECTION Theory of Operation Ver. 1.0 Apr. 2010 Drive Tray1 exit roller Exit motor (M5) Conveyance motor (M4) Tray2 exit roller Paper passage motor/2 (M3) Conveyance roller 2 Paper passage roller Exit driven roller Conveyance roller 1 A0HRT2C004DB...

  • Page 328: Operation

    Theory of Operation Ver. 1.0 Apr. 2010 5. CONVEYANCE SECTION Operation 5.3.1 Upper lower path switching gate • The upper lower path switching gate switches paper to different routes that go to individ- ual trays and SD-509. • The paper exit command from the main body moves the upper lower path switching gate up or down as necessary.

  • Page 329: Tray1 Path Switching Gate

    5. CONVEYANCE SECTION Theory of Operation Ver. 1.0 Apr. 2010 5.3.2 Tray1 path switching gate • The tray1 path switching gate changes the paper conveyance path between one toward the tray1 and one toward the bypass route. A. Tray1 path switching gate operation •...

  • Page 330: Conveyance Operation

    Theory of Operation Ver. 1.0 Apr. 2010 5. CONVEYANCE SECTION 5.3.3 Conveyance operation A. Tray1 conveyance • The paper conveyed from the horizontal conveyance section is conveyed via the registra- tion roller and guided into the tray1 by the upper lower path switching gate and tray1 path switching gate.
  • Page 331 5. CONVEYANCE SECTION Theory of Operation Ver. 1.0 Apr. 2010 C. Bypass route • The bypass route is provided to eliminate any time loss during stapling operation relative to the subsequent sheet of paper and to achieve high productivity. The following describe how two copy sets/stacks are produced as an output, each con- sisting of two sheets of paper stapled together.
  • Page 332 Theory of Operation Ver. 1.0 Apr. 2010 5. CONVEYANCE SECTION D. Conveyance to SD-509 • The paper conveyed from the horizontal conveyance section is further conveyed onto the path toward tray2 and, when the trailing edge of the paper moves past the lower path sensor, the switchback roller is brought to a temporary stop.

  • Page 333: Exit Tray Section

    6. EXIT TRAY SECTION Theory of Operation Ver. 1.0 Apr. 2010 EXIT TRAY SECTION Drive Tray2 Elevate motor (M15) Lift belt A0HRT2C011DB...

  • Page 334: Operation

    Theory of Operation Ver. 1.0 Apr. 2010 6. EXIT TRAY SECTION Operation 6.2.1 Tray lift A. Tray lift operation • The driving force of the worm gear mounted on the shaft of the elevate motor drives the lift belt. • The tray2 moves up or down depending on the direction in which the lift belt is driven. Tray2 Elevate motor (M15) Tray2 upper position...

  • Page 335: Exit To Tray1

    6. EXIT TRAY SECTION Theory of Operation Ver. 1.0 Apr. 2010 6.2.2 Exit to tray1 • The paper conveyed from the horizontal conveyance section is fed out into the tray1 by the tray1 exit roller by way of the registration roller and paper passage roller. •...

  • Page 336: Exit To Tray2

    Theory of Operation Ver. 1.0 Apr. 2010 6. EXIT TRAY SECTION 6.2.3 Exit to tray2 • The exit motor is energized to convey paper onto tray2. • To collect sheets of paper in the alignment section during stapling, the exit roll is tempo- rarily retracted.
  • Page 337 6. EXIT TRAY SECTION Theory of Operation Ver. 1.0 Apr. 2010 Exit roller retraction motor (M9) Exit roll Tray2 exit roller Exit motor (M5) A0HRT2C014DB Before pressure After pressure A0HRT2C026DA...

  • Page 338: Tray2 Shift Control

    Theory of Operation Ver. 1.0 Apr. 2010 6. EXIT TRAY SECTION 6.2.4 Tray2 shift control • The tray2 is moved to the front or rear in order to offset one copy set/stack with respect to another in the sort or group mode. •...
  • Page 339 6. EXIT TRAY SECTION Theory of Operation Ver. 1.0 Apr. 2010 A. Tray1 shift operation • When the leading edge of the paper reaches a point a given distance before the tray2 exit roller in the sort/group mode, the tray2 shift motor is energized to perform the shift operation.

  • Page 340: Alignment Section

    Theory of Operation Ver. 1.0 Apr. 2010 7. ALIGNMENT SECTION ALIGNMENT SECTION Drive Alignment plate Alignment plate home sensor (PS17) Alignment plate motor (M13) A0HRT2C017DB...

  • Page 341: Operation

    7. ALIGNMENT SECTION Theory of Operation Ver. 1.0 Apr. 2010 Operation 7.2.1 Alignment plate • The alignment plates align sheets of paper in the crosswise direction inside the finisher. • The alignment plate motor rotates in the forward/reverse direction to open/close the alignment plates to perform the alignment of the paper.

  • Page 342: Alignment Section Conveyance Mechanism

    Theory of Operation Ver. 1.0 Apr. 2010 7. ALIGNMENT SECTION 7.2.2 Alignment section conveyance mechanism • The paper fed out from the main body falls in the alignment section by its own weight. • The accommodation paddle motor operates the accommodation paddle to convey paper reliably onto the alignment section.

  • Page 343: Stapler

    8. STAPLER Theory of Operation Ver. 1.0 Apr. 2010 STAPLER Drive A0HRT2C027DA Stapler unit Stapler home sensor/1 (PS18) Stapler home sensor/2 (PS19) Stapler movement motor (M11) Belt A0HRT2C021DB...

  • Page 344: Operation

    Theory of Operation Ver. 1.0 Apr. 2010 8. STAPLER Operation 8.2.1 Stapler movement A. Stapler movement operation • The stapler movement motor moves the stapler. • Rotation of the stapler movement motor drives the belt through the pulley, which moves the stapler mounted on the belt.

  • Page 345: Stapler Control

    8. STAPLER Theory of Operation Ver. 1.0 Apr. 2010 8.2.2 Stapler control • The stapling operation is performed by the stapler motor. A. Stapling operation • In the stapling operation, the stapler motor drives the clincher side to press the paper. Then, the staple is pushed out from the stapler side and bent at the clincher side.
  • Page 346 Theory of Operation Ver. 1.0 Apr. 2010 8. STAPLER B. Staple control (1) Stapling • After completing the alignment operation of the alignment plate, the stapler motor per- forms the stapling operation. • The stapling operation is completed when the stapler home sensor in the stapler detects the home position and turn ON.
  • Page 347 8. STAPLER Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 348: Theory Of Operation

    SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...

  • Page 349: Revision History

    Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
  • Page 350 Theory of Operation Ver. 1.0 Apr. 2010 CONTENTS PK-517 OUTLINE PRODUCT SPECIFICATIONS ................1 UNIT CONFIGURATION ..................2 PAPER PATH......................3 CONFIGURATION/OPERATION CONFIGURATION ....................5 OPERATION ......................5 Skew correction mechanism ................. 5 Punch mechanism ....................6 Punch status detection ..................7 Punch trash box full detection mechanism ............
  • Page 351 Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 352: Product Specifications

    Theory of Operation Ver. 1.0 Apr. 2010 1. PRODUCT SPECIFICATIONS OUTLINE PRODUCT SPECIFICATIONS A. Type Name Punch kit Type FS-integrated type punching operation device B. Functions Punching method Stops and punches every paper No. of holes 2-3 holes / 4 holes / Sweden 4 holes 2 holes / φ...

  • Page 353: Unit Configuration

    2. UNIT CONFIGURATION Theory of Operation Ver. 1.0 Apr. 2010 UNIT CONFIGURATION Punch section Punch scraps box section A10ET1C001DB...

  • Page 354: Paper Path

    Theory of Operation Ver. 1.0 Apr. 2010 3. PAPER PATH PAPER PATH Punch kit Paper path from the main body Punch scraps box A10ET1C002DB...
  • Page 355 3. PAPER PATH Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 356: Configuration/Operation

    Theory of Operation Ver. 1.0 Apr. 2010 4. CONFIGURATION CONFIGURATION/OPERATION CONFIGURATION A10ET2C001DA OPERATION Skew correction mechanism • For punch operation, a loop is formed in the paper at the conveyance roller to correct skew. • The paper passage sensor/1 detects the leading edge of the paper and the conveyance roller forms a loop in the paper.

  • Page 357: Punch Mechanism

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 Punch mechanism • The paper passage sensor/1 will detect the trailing edge of the paper and stop feeding the paper after the lapse of a predetermined period of time. • The drive cam will be rotated by the punch motor/1(2) to move the slide cam back and forth.

  • Page 358: Punch Status Detection

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION Punch status detection • The punch status is detected by the punch cam position sensor, punch home sensor/1, and the punch pulse sensor/1. Punch cam position sensor (PS200) Punch home sensor/1 (PS100) Punch home sensor/2 (PS101) Punch pulse sensor/1 (PS300) Punch pulse sensor/2 (PS301)

  • Page 359: Punch Trash Box Full Detection Mechanism

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 Punch trash box full detection mechanism • The punch trash box is provided with the punch hole full sensor. When a punch waste is detected, the corresponding message is displayed on the control panel. •...
  • Page 360 SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...
  • Page 361 Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
  • Page 362 Theory of Operation Ver. 1.0 Apr. 2010 CONTENTS SD-509 OUTLINE PRODUCT SPECIFICATIONS ................1 PAPER FEED PATH ....................2 CONFIGURATION/OPERATION CONFIGURATION ....................3 ALIGNMENT SECTION ..................4 Drive ........................4 Operation ......................5 4.2.1 Alignment ...................... 5 4.2.2 Stopper ......................7 STAPLER ........................
  • Page 363 Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 364: Product Specifications

    Theory of Operation Ver. 1.0 Apr. 2010 1. PRODUCT SPECIFICATIONS OUTLINE PRODUCT SPECIFICATIONS A. Type Name Saddle sticher SD-509 Type Built into the finisher Installation Screwed to the finisher Document alignment Center Stapling function Center parallel two points B. Paper (1) Saddle stitching Type Plain paper, Thick paper 1, Thick paper 2...

  • Page 365: Paper Feed Path

    2. PAPER FEED PATH Theory of Operation Ver. 1.0 Apr. 2010 PAPER FEED PATH A10DT1C001DB...

  • Page 366: Configuration/Operation

    Theory of Operation Ver. 1.0 Apr. 2010 3. CONFIGURATION CONFIGURATION/OPERATION CONFIGURATION Alignment section Stapler Exit section A10DT2C001DA...

  • Page 367: Alignment Section

    4. ALIGNMENT SECTION Theory of Operation Ver. 1.0 Apr. 2010 ALIGNMENT SECTION Drive Alignment plate/R Alignment plate/F Center staple alignment Center staple alignment motor/R (M23) motor/F (M24) Leading edge stopper motor (M20) Leading edge stopper Leading edge stopper A10DT2C002DB...

  • Page 368: Operation

    Theory of Operation Ver. 1.0 Apr. 2010 4. ALIGNMENT SECTION Operation 4.2.1 Alignment • In the folding/saddle stitching mode, the center staple alignment motor/F and /R aligns paper. • The center staple alignment motor rotates in the forward/reverse direction to move the alignment plates, thereby aligning paper in the main scanning direction.
  • Page 369 4. ALIGNMENT SECTION Theory of Operation Ver. 1.0 Apr. 2010 B. Alignment control • When the first sheet of paper undergoes a switchback operation, the center staple align- ment motor/F and /R start rotating to bring the alignment plates closer to each other and then bring them to a stop at the standby positions at which they are apart from each at a distance slightly wider than the paper width.

  • Page 370: Stopper

    Theory of Operation Ver. 1.0 Apr. 2010 4. ALIGNMENT SECTION 4.2.2 Stopper • At the leading edge stopper, papers in sub scanning direction are aligned, and papers conveyed to the aligning section are conveyed to the specified position. • The leading edge grip holds the paper when moving it to a specified position, or when stapling or folding it.
  • Page 371 4. ALIGNMENT SECTION Theory of Operation Ver. 1.0 Apr. 2010 B. Stopper control (1) Folding mode • After the last sheet of paper was aligned, the leading edge grip solenoid is turned ON and the sheets of paper are held in place. •...
  • Page 372 Theory of Operation Ver. 1.0 Apr. 2010 5. STAPLER STAPLER Drive Staple motor Drive gear A10DT2C005DA...

  • Page 373: Stapler

    5. STAPLER Theory of Operation Ver. 1.0 Apr. 2010 Operation 5.2.1 Stapling • The stapling operation is performed by the staple motor. A. Stapling operation • In the stapling operation, the staple motor in the stapler pushes out the paper press sec- tion to the clincher by the drive gear to hold the paper and punch out the staple.

  • Page 374: Folding/Saddle Stitching

    Theory of Operation Ver. 1.0 Apr. 2010 6. FOLDING/SADDLE STITCHING FOLDING/SADDLE STITCHING Drive Folding plate Folding roller Center fold roller motor (M25) Center fold plate motor (M26) A10DT2C007DB...

  • Page 375: Operation

    6. FOLDING/SADDLE STITCHING Theory of Operation Ver. 1.0 Apr. 2010 Operation 6.2.1 Folding plate • The center fold plate motor drives the folding plate. A. Folding plate operation • The center fold plate motor rotates the crank shaft a half turn via the gear and pushes the paper to the nip section with the folding plate.

  • Page 376: Folding Conveyance

    Theory of Operation Ver. 1.0 Apr. 2010 6. FOLDING/SADDLE STITCHING 6.2.2 Folding conveyance • The center fold roller motor drives the folding roller. Folding roller Center fold roller motor (M25) A10DT2C009DA...
  • Page 377 6. FOLDING/SADDLE STITCHING Theory of Operation Ver. 1.0 Apr. 2010 A. Folding conveyance control • The center fold plate motor turns ON after the leading edge stopper stops at the folding position. • When the center fold plate motor turns ON the center fold plate home sensor, the center fold roller motor turns ON and folds the paper.

  • Page 378: Exit Section

    Theory of Operation Ver. 1.0 Apr. 2010 7. EXIT SECTION EXIT SECTION Configuration Booklet tray full Booklet tray near full sensor (PS50) sensor (PS48) A10DT2C008DA...

  • Page 379: Operation

    7. EXIT SECTION Theory of Operation Ver. 1.0 Apr. 2010 Operation 7.2.1 Exit • The paper fed out by the center fold roller motor is stacked in the tray by its own weight. A. Full-of-paper detection • The capacity of the tray varies depending on the number of sheets of paper in the paper sets/stacks fed into the tray and detection of a full-of-paper condition cannot be made based on the number of sheets of paper stacked in the tray.

  • Page 380: Theory Of Operation

    SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...

  • Page 381: Revision History

    Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
  • Page 382 Theory of Operation Ver. 1.0 Apr. 2010 CONTENTS JS-603 OUTLINE PRODUCT SPECIFICATIONS ................1 PAPER PATH......................2 CONFIGURATION/OPERATION CONFIGURATION ....................3 DRIVE ........................4 OPERATION ......................5 Conveyance/exit section ..................5 5.1.1 Paper conveyance..................5 5.1.2 Conveyance path switching................5 5.1.3 Full-of-paper detecting mechanism...............
  • Page 383 Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 384: Product Specifications

    Theory of Operation Ver. 1.0 Apr. 2010 1. PRODUCT SPECIFICATIONS OUTLINE PRODUCT SPECIFICATIONS A. Type Type Fixed to the finisher Document align- Center ment B. Functions Modes Sort, group C. Paper Size Type Capacity Plain paper (60 to 90 g/m 100 sheets (16 to 24 lb) Thick paper 1 (91 to 150 g/m...

  • Page 385: Paper Path

    2. PAPER PATH Theory of Operation Ver. 1.0 Apr. 2010 PAPER PATH A10FT1C001DA...

  • Page 386: Configuration/Operation

    Theory of Operation Ver. 1.0 Apr. 2010 3. CONFIGURATION CONFIGURATION/OPERATION CONFIGURATION A10FT2C001DB Conveyance/exit section A10FT2C002DB...

  • Page 387: Drive

    4. DRIVE Theory of Operation Ver. 1.0 Apr. 2010 DRIVE Paper passage motor/1 (M1) Tray3 full sensor (PS36) Tray3 exit roller retraction motor (M17) Tray3 exit roller retraction sensor (PS35) A10FT2C003DA...

  • Page 388: Operation

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION OPERATION Conveyance/exit section 5.1.1 Paper conveyance • Drive from the paper passage motor/1 causes the corresponding exit roller to rotate, thereby conveying the paper into the tray. • The paper passage motor/1 is energized a predetermined period of time after the paper has activated the paper passage sensor/1.

  • Page 389: Full-Of-Paper Detecting Mechanism

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 5.1.3 Full-of-paper detecting mechanism • The tray3 full sensor is located at the exit of the tray, detecting a full-of-paper condition of the tray. • The actuator is operated each time paper is fed into the tray. When the level of paper fed into the tray reaches a predetermined value (capacity), the sensor is blocked and the main body determines that the tray is full of paper.

  • Page 390: Exit Roller Pressure/Retraction

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION 5.1.4 Exit roller pressure/retraction • The tray is provided with an exit roller pressure/retraction mechanism that allows paper to be temporarily fed into the tray when a 2-sided print cycle is commanded. •...
  • Page 391 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 A. Exit roller pressure/retraction overview • The exit roller is normally in its retracted condition. It is pressed during a 2-sided print cycle and paper exit into tray 3. • When the main body is turned or retracted from the sleep mode, or a cover open/close, the tray3 exit roller retraction motor is energized to bring the exit roller into its retracted condition, which is done to determine the condition of the exit roller.
  • Page 392 SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...
  • Page 393 Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
  • Page 394 Theory of Operation Ver. 1.0 Apr. 2010 CONTENTS FS-529 OUTLINE PRODUCT SPECIFICATIONS ................1 PAPER PATH......................3 CONFIGURATION/OPERATION CONFIGURATION ....................5 DRIVE ........................6 OPERATION ......................7 Conveyance section....................7 5.1.1 Paper conveyance..................7 5.1.2 Conveyance path switching................8 5.1.3 Tray exit roller pressure/retraction ..............
  • Page 395 Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 396: Product Specifications

    Theory of Operation Ver. 1.0 Apr. 2010 1. PRODUCT SPECIFICATIONS OUTLINE PRODUCT SPECIFICATIONS A. Type Type Multi staple finisher built into the main body Installation Installed in main body B. Functions Modes Sort, group, sort offset, group offset, sort staple C.
  • Page 397 1. PRODUCT SPECIFICATIONS Theory of Operation Ver. 1.0 Apr. 2010 E. Stapling Letter S, A4S, 8- X 11S or less 50 sheets No. of sheets to be Legal, B4, 8- X 14 or greater 30 sheets stapled 80 to 90 g/m (21.25 to 24 lb): 48 sheets + 2 sheets (209 g/m (55.5 lb)) Back of the corner...

  • Page 398: Paper Path

    Theory of Operation Ver. 1.0 Apr. 2010 2. PAPER PATH PAPER PATH A0U7T1C001DA...
  • Page 399 2. PAPER PATH Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 400: Configuration/Operation

    Theory of Operation Ver. 1.0 Apr. 2010 3. CONFIGURATION CONFIGURATION/OPERATION CONFIGURATION A0U7T2C015DA Conveyance section Exit tray section Alignment section Staple section A0U7T2C001DA...

  • Page 401: Drive

    4. DRIVE Theory of Operation Ver. 1.0 Apr. 2010 DRIVE Conveyance motor/1 (M5) Conveyance motor/2 (M6) Exit roller Pick up roller position motor (M1) A0U7T2C002DA...

  • Page 402: Operation

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION OPERATION Conveyance section 5.1.1 Paper conveyance • Drive from the conveyance motor/1 and conveyance motor/2 cause the corresponding roller to rotate, thereby conveying the paper into the tray. • After it is determined that the paper has been fed out of the main body, the conveyance motor/1 and conveyance motor/2 are energized.

  • Page 403: Conveyance Path Switching

    5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 5.1.2 Conveyance path switching • The conveyance path is switched to conveyance paper onto the duplex section. • The paper path switching guide works to switch the conveyance path as necessary. The lever is operated to swing up and down the paper path switching guide when the flapper solenoid is energized.

  • Page 404: Tray Exit Roller Pressure/Retraction

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION 5.1.3 Tray exit roller pressure/retraction • The exit roller is retracted as necessary in order to conveyance the paper from the main body temporarily onto the alignment section. • After the alignment operation is completed, the exit roller is pressed again, so that the paper is fed into the tray.
  • Page 405 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 B. Exit roller pressure/retraction operation • When the pick up roller position motor is energized, the gear is rotated. The exit roller is then raised and lowered to complete a pressure/retraction operation. •...

  • Page 406: Alignment Section

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION Alignment section 5.2.1 Drive Alignment plate/R Alignment plate/F Alignment motor/R (M4) Alignment motor/F (M3) A0U7T2C007DA...
  • Page 407 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 5.2.2 Operation A. Alignment section • The alignment section performs stapling, aligning, sorting, and offsetting. • The paper is conveyed, one sheet at a time, onto the alignment section for subsequent necessary operation.

  • Page 408: Operation

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION Stapler 5.3.1 Drive Stapler movement motor (M7) Stapler home sensor (PS11) Stapler Drive belt A0U7T2C010DA...
  • Page 409 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 5.3.2 Operation A. Stapler movement • The stapler movement motor moves the stapler. • The stapler movement motor rotates to drive the belt, which in turn moves the stapler unit. • The stapling position is controlled based on the number of pulses generated by the sta- pler movement motor.

  • Page 410: Operation

    Theory of Operation Ver. 1.0 Apr. 2010 5. OPERATION Exit tray section 5.4.1 Drive Paper surface detect solenoid (SD1) Exit roller Tray up/down operation sensor (PS4) Conveyance motor/2 (M6) Paper surface detect sensor/1 (PS2) Tray up/down motor (M2) Paper surface detect sensor/2 (PS3) Tray lower limit sensor (PS6) A0U7T2C012DA...
  • Page 411 5. OPERATION Theory of Operation Ver. 1.0 Apr. 2010 5.4.2 Operation A. Tray up/down • When the tray up/down motor is energized, the corresponding arm is operated via a gear train to raise the tray. • The upper limit of motion of the tray is established by a stopper provided in the finisher. The tray is lowered as the motor rotates backward.

  • Page 412: Theory Of Operation

    SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...

  • Page 413: Revision History

    Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
  • Page 414 Theory of Operation Ver. 1.0 Apr. 2010 CONTENTS AU-102/AU-201 AU-102 CONFIGURATION ....................1 OPERATION ......................1 AU-201 CONFIGURATION ....................2 OPERATION ......................2...
  • Page 415 Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...

  • Page 416: Configuration

    Theory of Operation Ver. 1.0 Apr. 2010 1. CONFIGURATION AU-102 CONFIGURATION Finger Authentication unit (AU-102) A0P0T2C581AA OPERATION • A finger vein pattern is used for personal identification. • Vein patterns are inside the body and cannot be visually recognized. This makes vein patterns extremely difficult to forge or falsify.

  • Page 417: Configuration

    1. CONFIGURATION Theory of Operation Ver. 1.0 Apr. 2010 AU-201 CONFIGURATION Abcde Fgdhi ABCDE_Co. Non-contact IC card Authentication unit (AU-201) A00HT2C302AA OPERATION • A non-contact IC card, such as an employee ID card, is used for personal identification. • The system supports the communications protocol in compliance with Type A, Type B, and Felica (Type C) of ISO14443.
  • Page 418 SERVICE MANUAL THEORY OF OPERATION 2010.04 Ver. 1.0...
  • Page 419 Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
  • Page 420 Theory of Operation Ver. 1.0 Apr. 2010 CONTENTS EK-604/605/SC-507 EK-604 CONFIGURATION ....................1 OPERATION ......................1 EK-605 CONFIGURATION ....................2 OPERATION ......................3 SC-507 CONFIGURATION ....................4 OPERATION ......................4...
  • Page 421 Theory of Operation Ver. 1.0 Apr. 2010 Blank Page...
  • Page 422 Theory of Operation Ver. 1.0 Apr. 2010 1. CONFIGURATION EK-604 CONFIGURATION USB terminal (extension) USB terminal (standard) Local Interface Kit EK-604 A0YCT2C502AA OPERATION • The document can be printed directly from, or saved in, the USB memory. • Connecting the USB keyboard (dealer option: overseas market only) will permit keyboard input.
  • Page 423 1. CONFIGURATION Theory of Operation Ver. 1.0 Apr. 2010 EK-605 CONFIGURATION USB terminal (extension) USB terminal (standard) Local Interface Kit EK-605 A0YCT2C504AA...
  • Page 424 Theory of Operation Ver. 1.0 Apr. 2010 2. OPERATION OPERATION • The document can be printed directly from, or saved in, the USB memory. • Connecting the USB keyboard (dealer option: overseas market only) will permit keyboard input. • The local interface kit is mounted when the voice guidance function and functions inter- acting with the portable phone or PDA (portable data terminal) compatible with Bluetooth are to be used.

  • Page 425: Operation

    * The copy guard security pattern and password copy security pattern can be detected only by the Konica Minolta machine mounted with the copy guard and password copy functions. Copy...
  • Page 426 © 2010 KONICA MINOLTA BUSINESS TECHNOLOGIES, INC. © 2010 KONICA MINOLTA BUSINESS TECHNOLOGIES, INC. Use of this manual should be strictly supervised to Use of this manual should be strictly supervised to DDA1UD-M-TE1 DDA1UD-M-TE1 avoid disclosure of confidential information. avoid disclosure of confidential information.

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