Oki B2520 Maintenance Manual
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Oki B2520 Maintenance Manual

Oki B2520 Maintenance Manual

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B2520/B2540MFP
Maintenance Manual
071107A
Oki Data CONFIDENTIAL

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  • Page 1 B2520/B2540MFP Maintenance Manual 071107A Oki Data CONFIDENTIAL...

  • Page 2: Table Of Contents

    - 2 - Tech Reference Section CONTENTS 1 GENERAL INFORMATION RESENTATION ENERAL DESCRIPTION 2 CHARACTERISTICS HYSICAL CHARACTERISTICS ENERAL TECHNICAL CHARACTERISTICS ENERAL CHARACTERISTICS OF THE CONSUMABLE 3 OPERATION RONT PANEL CARD CARD Electronical architecture Power supply Quartz Reset 4 PRINTING RINTER LANGUAGE NTERNAL FONTS LIST APER FORMAT...

  • Page 3: General Information

    (USB key) feed tray Adjustable Paper tray paper guide Back LAN Connection Back cover (model B2540) USB connection master (USB key) (model B2520) Mains power USB connection supply connector slave (for PC) External phone line connector Phone line On/Off switch connector...

  • Page 4: General Description

    - 4 - 1.2 G ENERAL DESCRIPTION The terminal are part of a range of multi-function office equipment. The product consists of a color scanner with a 600 Dpi resolution and a Black and White printer with a 600 Dpi resolution. These two components are integrated into a single compact terminal. Documents are processed by a scanner using CIS (Contact Image Sensor) technology, via the ADF (Automatic Document Feeder) or via the exposition window for bulky documents.

  • Page 5: General Technical Characteristics

    - 5 - 2.2 G ENERAL TECHNICAL CHARACTERISTICS Terminal General Measurements L-D-H in mm 386 x 447 x 412 Weight (in Kg) Consumables Paper reference (PR) Type (for flatbed and ADF scanners) Inapa tecno SPEED A4 - 80 g/m Type (for printer) Ricoh T6200 A4 - 70 g/m Document reference (DR)
  • Page 6 - 6 - Terminal Zoom in steps of 1 % 25 % to 400 % Contrast Yes (7 levels) Brightness Yes (7 levels) Printer Type Laser B/W Printer language Resolution in DPI 600 x 600 Maximum paper width (in mm) Legal (215.9 x 355.6) Paper feed tray •...

  • Page 7: General Characteristics Of The Consumable

    - 7 - Terminal LAN Access (model B2540) Type Ethernet 10/100 base T Plug and Play configuration DHCP & BOOTP Internet Protocol TCP / IP 2 DNS server access Fax-Modem Type PSTN-Super G3 Maximum speed in bps (V34Fax) 33 600 V34Fax capacity in bps 33 600 to 2 400 •...

  • Page 8: Operation

    - 8 - The values of the consumable’s counter are regularly updated in the EEPROM memory. Each time the machine is switched on, the counter is read in the the EEPROM memory. 3. OPERATION The equipment is a Group 3 multifunction fax functioning in accordance with the UIT-T T30 recom- mendation.
  • Page 9 - 9 - List of connectors: Connector Topography Number of points Position CPU Connection P4200 Female Elbow top contact P4002 Female Elbow, top contact Smart card P4001 Female • CPU - P4200: CPU connection Signal Input/Output Utilization 1-7-8-10-15 Ground FERCAP Detection of smart card CVCC Smart card power supply (3.3V)

  • Page 10: Cpu Card

    SDRAM. The SDRAM also serves as the operating memory for Digicolor2. 3.2.1 E LECTRONICAL ARCHITECTURE Overview of the CPU electronical architecture : LAN (model B2540) MEMORIES CONNECTOR CONTROLLER 32 MBits (B2520) 256 MBits (B2520) P8800 128 MBits (B2540) 512 MBits (B2540) (model B2520)
  • Page 11 P4100 P4302 P4301 P1650 Master P4950 CN13 CN16 CN12 CN15 LAN P8800 P4380 (model B2540) USB master P4960 (model B2520) Slave P4901 External phone line P4420 Printer Phone line P4440 List of connectors: Connector Topography Number of points Position...

  • Page 12: Power Supply

    - 12 - • CNx: printer connectors Topography Connector Signal Input/ Utilization Output Polygon motor +24VS 24V power supply Ground XPMENA Starting the polygon motor XSCRDY Locking the polygon motor PMCLK Polygon motor clock Diode laser +5VLD XLDENA Activating the laser APCSH Sampling XDETP...
  • Page 13 - 13 - Topography Connector Signal Input/ Utilization Output 5V power supply DBGRXD Debug receipt DBGTXD Debug command Ground CN10 Signals of command High voltage TRAPWM PWM signal for transfer of charger (+) TRAPWM PWM signal for transfer of charger (-) BIASPW PWM development signal...
  • Page 14 - 14 - • Loudspeaker - P1650: connection with the loudspeaker Signal Input/Output Utilization Differentiated BF signal to HP Differentiated BF signal to HP • Frontpanel - P4100: connection with the front panel card Signal Input/Output Utilization 5V power supply 2-7-9-10-16 Ground STROB2...
  • Page 15 - 15 - • Phone line - P4420 Signal Input/Output Utilization Loopback Phone line Phone line Loopback • External phone line - P4440 Signal Input/Output Utilization Phone line Phone line • LAN - P8800 (model B2540) Signal Input/Output Utilzsation TXLANP Differential pair TXLANN Differential pair...

  • Page 16: Quartz

    - 16 - • USB - P4960: USB master interface (model B2520) Signal Input/Output Utilization VBUS_USB_HO Power supply provided to the slave ST_2 USBN Differential pair USBP Differential pair Ground 3.2.2 P OWER SUPPLY The 24V and 5V power supply are provided by the printer.

  • Page 17: Reset

    - 17 - 3.2.4 R ESET The reset is generated from 3.3V as all logical parts (DIGICOLOR2, memory, …) are supplied in 3.3V. The reset is active during at least 100ms. Printer’s reset diagram: Low voltage detection Reset USB USB Host 3.3 V MAX809 - T : 3,08 V Z410...

  • Page 18: Internal Fonts List

    - 18 - 4.2 I NTERNAL FONTS LIST The following list shows internal fonts as it is printed by the terminal (model B2540):...
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  • Page 23: Paper Format

    - 23 - 4.3 P APER FORMAT The following is a list of compatible paper formats: Supports Paper trays Media sizes Dimensions (mm) Main Manual Feeder Legal 215.9 x 355.6 210 x 297 Letter 215.9 x 279.4 148 x 210 B5 (JIS) 182 x 257 Executive...

  • Page 24: Maintenance Section

    AINTENANCE SECTION CONTENTS 1 SCANNER AND COMMUNICATION REVENTIVE MAINTENANCE 1.1.1 Paper transport rollers 1.1.2 Paper separator module 1.1.3 CIS and Flatbed window 1.1.4 Front panel keys and covers CANNING AND OMMUNICATION RROR ODES 1.2.1 Communication Error Codes 1.2.2 General Codes AINTENANCE TUNING 1.3.1 Supply voltages: connections between the power supply board...

  • Page 25: Scanner And Communication

    - 25 - 1. SCANNER AND COMMUNICATION 1.1 P REVENTIVE MAINTENANCE To keep the terminal in good working condition, the following operations should be carried out regu- larly: • Cleaning the paper transport rollers of the ADF scanner. • Cleaning the paper separator. •...

  • Page 26: Cis And Flatbed Window

    - 26 - 2 - Open the ADF scanner cover. 3 - Disassemble the ADF feeder (see Worksheet D4, page 17). 4 - Wipe the elements of the paper separator module with a lint-free cloth soaked with isopro- pyl alcohol. Recommended interval: from 2 to 6 months, depending on utilization.

  • Page 27: Canning And Ommunication Rror Odes

    - 27 - 1.2 S CANNING AND OMMUNICATION RROR ODES 1.2.1 C OMMUNICATION RROR ODES The communication error codes appear in the logs (printed using key sequence 5 2) and in the trans- mission reports. 1.2.2 G ENERAL ODES The following table presents and details for each error code displayed by the terminal its cause and when required the corrective action to perform.
  • Page 28 - 28 - Code Error Cause Action Received document faulty. The document is too long to be Ask the correspondent received in its entirety. to check/reduce the length of his document. Document transmission fault Document reception error. Ask the correspondent to retransmit his docu- ment.

  • Page 29: Maintenance - Tuning

    - 29 - 1.3 M AINTENANCE TUNING 1.3.1 S UPPLY VOLTAGES CONNECTIONS BETWEEN THE POWER SUPPLY BOARD AND BOARD CPU board pin Values Function CN° + 5 V 5V Supply 10-11 Ground 12-13 + 24 V 24V Supply Remark(s) : The mains input of the power supply is protected by a fuse.

  • Page 30: Disassembly / Assembly Worksheets

    - 30 - 1.4 D ISASSEMBLY ASSEMBLY WORKSHEETS Attention - BEFORE DISASSEMBLING/ASSEMBLING, MAKE SURE THE TERMINAL IS SWITCHED OFF. DISCONNECT ALL CORDS AT THE FRONT AND BACK OF THE TERMINAL (LINE, USB AND POWER SUPPLY). Remark(s) : Depending on the model, remove the front panel. 1.4.1 L IST OF TOOLS •...

  • Page 31: Worksheet Chart

    - 31 - 1.4.3 W ORKSHEET CHART B2520 / B2540 basic assembly Front panel Printer front door ADF scanner cover support assy + Side covers + White panel (Worksheet D1) (Worksheet D3) (Worksheet D2) Flat bed scanner Back cover CPU module...
  • Page 32 - 32 - OBJECT :E QUIPED FRONT PANEL Requirements • None. Preliminary steps • None. Disassembly 1 - Stand in front of the terminal. 2 - Unlock the three clips of the front panel (A, B and C). 3 - Push the panel towards the back to release it from the two bottom slots (D and E). 4 - Disconnect the panel ribbon cable from the panel card connector.
  • Page 33 - 33 - OBJECT :ADF S CANNER COVER AND WHITE PANEL Requirements • Flat screwdriver (medium size). • Cross-threaded (Philips) screwdriver. Preliminary steps • None. Disassembly White panel 1 - Stand in front of the terminal and open the ADF scanner cover. 2 - Pull out the white panel located inside the ADF scanner cover.
  • Page 34 - 34 - OBJECT :ADF S CANNER COVER AND WHITE PANEL ONTINUED 3 - Unscrew the mounting screw of the ground cable. 4 - Disconnect the ADF scanner cover sensor connector (A) and the paper sensor connector (B). 5 - Open the ADF scanner cover, unscrew the two mounting screws of the cable cover and remove the cable cover.
  • Page 35 - 35 - OBJECT :ADF S CANNER COVER AND WHITE PANEL ONTINUED 7 - Insert a flat screwdriver in each slot of the two ADF scanner cover hinges. Left slot of the Right slot of the left hinge left hinge 8 - Lift and remove the ADF scanner cover, do not forget the mounting screws of the hinges.
  • Page 36 - 36 - OBJECT :ADF S CANNER COVER AND WHITE PANEL ONTINUED 4 - Position the cable cover, screw the two mouting screws then close the ADF scanner cover. 5 - Connect the paper sensor connector (black end) and the ADF cover sensor connector (white end).
  • Page 37 - 37 - OBJECT :P RINTER FRONT DOOR AND SIDE COVERS Requirements • Cross-threaded (Philips) screwdriver. • Flat screwdriver. Preliminary steps • None. Disassembly Printer front door 1 - Stand in front of the terminal. 2 - Push the left and right side of the printer front door and simultaneously pull it towards your- self.
  • Page 38 - 38 - SUBJECT:P RINTER FRONT DOOR AND SIDE COVERS CONTINUED 3 - Using a flat screwdriver, unscrew the side covers from their slots located under the terminal. 4 - Unclip the side covers from the top slots located at the back of the terminal and pivot them towards yourself to remove them.
  • Page 39 - 39 - OBJECT :I NSIDE PAPER WAY ASSEMBLY Requirements • Cross-threaded (Philips) screwdriver. • Flat screwdriver. Preliminary steps • None. Feeder assembly Disassembly 1 - Open the ADF cover. 2 - Lift the roller bearing.. 3 - Lift the roller bearing from the other end of the feeder.
  • Page 40 - 40 - OBJECT :I NSIDE PAPER WAY ASSEMBLY CONTINUED 4 - Lift the feeder and remove the feeder. Assembly 1 - Unpack and check all new components. 2 - Position the feeder in its slot, positionning correctly the teeth gear in the motor assembly. 3 - Lower the two roller bearings.
  • Page 41 - 41 - OBJECT :I NSIDE PAPER WAY ASSEMBLY CONTINUED Assembly • LFX Cork 1 - Make sure that the slot of the cork on the paper input guide is clean. 2 - Unpack and check all new components. 3 - Remove the adhesive from the cork and place the cork in its slot. •...
  • Page 42 - 42 - OBJECT :I NSIDE PAPER WAY ASSEMBLY CONTINUED 3 - Remove the motor frame cable from its cable guide. 4 - Disconnect the connector reaching the ADF cover and remove the inside paper way assem- bly. Assembly 1 - Unpack and check all new components. 2 - Position the inside paper way assembly near its final slot.
  • Page 43 - 43 - OBJECT :I NSIDE PAPER WAY ASSEMBLY CONTINUED 2 - Unscrew the two mounting screws of the paper guide assembly. 3 - Make a forward movement and remove the paper guide assembly. Assembly 1 - Unpack and check all new components. 2 - Insert the paper guide assembly forward in the paper input guide.
  • Page 44 - 44 - OBJECT :I NSIDE PAPER WAY ASSEMBLY CONTINUED DIsassembly 1 - Unscrew the mounting screw of the motor frame. 2 - Lift and remove the motor frame. Locate the teeth gears and remove them. Motor Disassembly 1 - Unscrew the two mounting screws of the motor and remove the motor. Assembly 1 - Position the motor on its frame and screw the two mounting screws.
  • Page 45 - 45 - OBJECT :I NSIDE PAPER WAY ASSEMBLY CONTINUED Motor frame assembly 1 - Unpack and check all new components. 2 - Position the teeth gears respecting their location identified during disassembly. 3 - Position the equiped motor frame in its slot on the inside paper way assembly. 4 - Screw the mounting screw of the motor frame.
  • Page 46 - 46 - OBJECT :I NSIDE PAPER WAY ASSEMBLY CONTINUED 2 - Lift the white frame plate to disassemble it from the inside paper way assembly and remove...
  • Page 47 - 47 - OBJECT :I NSIDE PAPER WAY ASSEMBLY CONTINUED White frame plate assembly 1 - Unpack and check all new components. 2 - Position the white frame plate on the inside paper way assembly and press on the white frame plate to clip it on the inside paper way assembly.
  • Page 48 - 48 - OBJECT :I NSIDE PAPER WAY ASSEMBLY CONTINUED 3 - Lift vertically the ADF sliders and remove them from the inside paper way assembly. 4 - Remove gently the brosse antistatique. ADF sliders and brosse antistatique assembly 1 - Unpack and check all new components. 2 - Check that the slot of the brosse antistatique is clean.
  • Page 49 - 49 - OBJECT :CPU M ODULE Requirements • Cross-threaded (Philips) screwdriver. Preliminary steps • Disassembling the printer front door and the right side cover (see worksheet D3). Disassembly 1 - Unscrew the three mounting screws of the CPU board armour plate. 2 - Pull the CPU board armour plate towards yourself and remove it.
  • Page 50 - 50 - OBJECT :CPU M ODULE CONTINUED 5 - Unscrew the eight mounting screws and remove the CPU board. Assembly 1 - Unpack and check all new components. 2 - Place the CPU board in the rack, screw in and tighten the eight mounting screws. 3 - Connect all the cords and leads to their corresponding CPU board connectors.
  • Page 51 - 51 - OBJECT :L OUD SPEAKER Requirements • None. Preliminary steps • Disassembling the front door and the right-hand side cover (see Worksheet D3). • Disassembling the CPU armour plate (see Worksheet D5). Disassembly 1 - Disconnect the loudspeaker connector from the CPU board. 2 - Remove the loudspeaker connector from its ferrite tube and cable guide.
  • Page 52 - 52 - OBJECT :F LATBED SCANNER ASSEMBLY Requirements • Cross-threaded (Philips) screwdriver. • Flat screwdriver. Preliminary steps • Disassemble the flatbed scanner cover (see Worksheet D2). • Disassemble the front door and the side covers (see Worksheet D3). • Disassemble the CPU board armour plate (see Worksheet D5). Disassembly 1 - Disconnect the scanner connector from the CPU board and remove it from its ferrite tube and cable guide.
  • Page 53 - 53 - OBJECT :F LATBED SCANNER ASSEMBLY CONTINUED 4 - Unlock the assembled flatbed scanner with a flat screwdriver and pull it towards yourself. 5 - Lift the assembled flatbed scanner and disassemble it. Assembly 1 - Unpack and check all new components. 2 - Stand in front of the terminal.
  • Page 54 - 54 - OBJECT :E QUIPED SCANNER CANNER WINDOW FRAME - CIS RIBBON CABLE SUPPORT CANNER MOTOR Requirements • Cross-threaded (Philips) screwdriver. • Flat screwdriver. Preliminary steps • Disassemble the scanner cover (see Worksheet D2). • Disassemble the printer front door and the side covers (see Worksheet D3). •...
  • Page 55 - 55 - OBJECT :E QUIPED SCANNER CANNER WINDOW FRAME - CIS RIBBON CABLE SUPPORT CANNER MOTOR CONTI 3 - Lift the front part of the scanner window panel and disassemble it. • CIS 1 - Lift the CIS backwards. 2 - Disconnect the CIS ribbon cable and disassemble it from its two side slots.
  • Page 56 - 56 - OBJECT :E QUIPED SCANNER CANNER WINDOW FRAME - CIS RIBBON CABLE SUPPORT CANNER MOTOR CONTI • CIS ribbon cable 1 - Unfold the end of the CIS ribbon cable and remove it from its slot. 2 - Slide the CIS ribbon cable out of its ferrite tube which is fixed to the CIS panel and remove it from the scanner.
  • Page 57 - 57 - OBJECT :E QUIPED SCANNER CANNER WINDOW FRAME - CIS RIBBON CABLE SUPPORT CANNER MOTOR CONTI • Scanner motor 1 - Unscrew the two mounting screws of the scanner motor (A et B). 2 - Remove the end of the scanner motor connector from its ferrite tube. 3 - Remove the CIS motor connector from its cable guide.
  • Page 58 - 58 - OBJECT :E QUIPED SCANNER CANNER WINDOW FRAME - CIS RIBBON CABLE SUPPORT CANNER MOTOR CONTI 12 - Assemble the side covers and the printer front door (see Worksheet D3). 13 - Assemble the ADF scanner cover (see Worksheet D2).
  • Page 59 - 59 - OBJECT :B ACK COVER Requirements • Cross-threaded (Philips) screwdriver. Preliminary steps • Disassemble the ADF scanner cover (see Worksheet D2). • Disassemble the printer front door and the side covers (see Worksheet D3). • Disassemble the CPU board armour plate (see Worksheet D5). •...
  • Page 60 - 60 - OBJECT :E QUIPED NTERFACE Requirements • Cross-threaded (Philips) screwdriver.. Preliminary steps • Disassemble theADF scanner cover (see Worksheet D2). • Disassemble the printer front door and the side covers (see Worksheet D3). • Disassemble the CPU board armour plate (see Worksheet D5). •...
  • Page 61 - 61 - OBJECT :P RINTER Requirements • Cross-threaded (Philips) screwdriver. Preliminary steps • None. Disassembly 1 - Stand in front of the terminal. 2 - Disassemble the equiped front panel (see Worksheet D1) and the ADF scanner cover (see Worksheet D2).

  • Page 62: Administrator Functions

    - 62 - 1.5 A DMINISTRATOR FUNCTIONS Each one of the administrator functions described here can be accessed via a specific succession of keys. The alphabetic keys are available via the navigation keys via the keyboard. * A (launching scanner tuning): For example, to enter a sequence 1 - Press the following key 2 - Press the following key *.

  • Page 63: Other Functions

    - 63 - • Erase the first element of the printer queue: • Erase Printer Error: Then switch ON/OFF the machine 1.5.2 O THER FUNCTIONS Before you start, position the Soft-switch 1 bit n°8 to 1. • Printing all parameters (including installation and technical parameters): •...

  • Page 64: Replacing The Cpu Board

    - 64 - • Retransmission of faxes to print to rerouting mail: • Activating the RAM dump: • Display modem software version: • Entering the serial number (with the SOS 1 bit 8 at 1): • Displaying the internal counters: •...

  • Page 65: Laser Printer

    - 65 - 2 - Replace the scanner (see Worksheet D7). 3 - Tune the scanner ( 8 0) only if the quality of the copy is unsatisfactory. 2. LASER PRINTER Refer to the printer’s technical manual. 2.1 R EPLACING THE PRINTER To replace the printer, follow this procedure: 1 - Set the On/Off button to Off (position 0).
  • Page 66 Disassembly Section TABLE OF CONTENTS 1. DETAILED SECTION DESCRIPTIONS ........1-1 1.1 COMPONENT LAYOUT ................1-1 1.1.1 MECHANICAL COMPONENTS............1-1 1.2 PRINTING ....................1-2 1.2.1 PRINTING PROCESSES AROUND THE DRUM ......1-2 1.2.2 CHARGE ..................1-3 1.2.3 LASER EXPOSURE .................1-4 Overview....................1-4 Block Diagram ..................1-5 PRINTER MODEL-L1 Error Conditions ..................1-5 1.2.4 DEVELOPMENT................1-6 Overview....................1-6...

  • Page 67: Technical Document

    2.3.5 THERMISTOR ................2-10 2.3.6 HOT ROLLER STRIPPERS ............2-10 2.3.7 THERMOSTAT ................2-11 2.4 PAPER FEED..................2-12 2.4.1 PAPER FEED ROLLER REMOVAL ..........2-12 2.4.2 REGISTRATION ROLLER .............2-13 (ALSO KNOWN AS ‘ROLLER DRIVEN’ IN THE PARTS CATALOG) 2-13 2.5 OTHERS ....................2-14 2.5.1 TRANSFER ROLLER ..............2-14 2.5.2 FAN MOTOR ..................2-15 2.5.3 MAIN MOTOR REMOVAL..............2-16 2.6 PSU (KNOWN AS ‘POWER SUPPLY UNIT’...

  • Page 68: Detailed Section Descriptions

    COMPONENT LAYOUT 1. DETAILED SECTION DESCRIPTIONS 1.1 COMPONENT LAYOUT 1.1.1 MECHANICAL COMPONENTS PRINTER MODEL-L1 (G182) SERVICE MANUAL G182D101.WMF TECHNICAL DOCUMENT Name Description Laser Unit Consists of the laser diode unit, cylindrical lens, f-theta lens, polygon mirror motor, and other laser optical components.

  • Page 69: Printing

    PRINTING 1.2 PRINTING 1.2.1 PRINTING PROCESSES AROUND THE DRUM PRINTER MODEL-L1 (G182) SERVICE MANUAL TECHNICAL DOCUMENT G182D010.WMF This machine uses a “write to black” system, using negative toner. Charge: The charge brush roller [A] gives the OPC drum [B] surface a negative charge.

  • Page 70: Charge

    PRINTING 1.2.2 CHARGE G182D102.WMF PRINTER MODEL-L1 The OPC (Organic Photoconductor) drum [A] used in this machine is small in diameter. This allows a very compact design. (G182) A charge roller [B] charges the photoconductor. The charge roller has the advantage of not generating ozone. A large negative voltage is applied from the Power Supply Unit board to the charge roller.

  • Page 71: Laser Exposure

    PRINTING 1.2.3 LASER EXPOSURE Overview PRINTER MODEL-L1 (G182) SERVICE MANUAL G182D004.WMF TECHNICAL DOCUMENT Laser Unit Layout A : Laser Diode Unit F : Laser Synchronization Detector B : Polygon Mirror Motor G : Cylindrical Lens C : F-theta Lens H : Synchronization Detector Lens D : First Mirror J : Shutter E : Second Mirror...

  • Page 72: Block Diagram

    PRINTING Block Diagram Laser Diode Unit Engine Board Regulator Laser Diode VIDEO Driver LDENA APCSH PGSYCI +24VD Polygon Mirror PMENA Motor Unit Interlock Switch PRINTER MODEL-L1 PMCLK Laser Diode PMLOK Polygon Mirror (G182) Motor Driver +24V Laser Synchronization Power Detector Supply SERVICE MANUAL Unit...

  • Page 73: Printer Model-L1

    PRINTING 1.2.4 DEVELOPMENT Overview G182D103.WMF PRINTER MODEL-L1 (G182) This machine uses mono-component toner, which is composed of resin and ferrite. SERVICE MANUAL The toner mixing bar [A] stirs and carries toner to the toner application roller [B]. The toner application roller supplies toner to the development roller [C]. As the development roller turns past the toner metering blade [D], only a thin coating of negatively charged toner particles stays adhered to the development roller.
  • Page 74 PRINTING PRINTER MODEL-L1 (G182) SERVICE MANUAL G182D005.WMF TECHNICAL DOCUMENT The voltage to the development roller and the toner application roller is supplied through the terminals ([A] for the development roller and [B] for the toner application roller) from the Power Supply Unit board.

  • Page 75: Toner End Detection

    PRINTING Toner End Detection This machine does not have toner end detection. PRINTER MODEL-L1 (G182) SERVICE MANUAL TECHNICAL DOCUMENT...

  • Page 76: (G182)

    PRINTING 1.2.5 TRANSFER AND SEPARATION Overview PRINTER MODEL-L1 (G182) G182D104.WMF This machine uses a transfer roller [A], which touches the OPC drum [B] surface. A constant current is applied to the transfer roller from the power supply unit board SERVICE MANUAL [C].

  • Page 77: Service Manual

    PRINTING 1.2.6 DRUM CLEANING G182D102.WMF PRINTER MODEL-L1 The cleaning blade and the used toner tank are contained in the toner cartridge. (G182) A counter blade system is used for drum cleaning. The cleaning blade [A] removes any toner remaining on the drum after the image is transferred to the paper. This SERVICE MANUAL removed toner is stored in the used toner tank [B].

  • Page 78: Paper Feed And Registration

    PRINTING 1.2.7 PAPER FEED AND REGISTRATION Overview PRINTER MODEL-L1 (G182) G182D105.WMF Paper Feed System: Feed roller [A] and Friction pad [B] SERVICE MANUAL Paper Lift Mechanism: Bottom plate with spring [C] Sheet feeder 1 sheet feeder [D] Tray Capacity: 250 sheets [E] Paper End Detection: Paper end sensor TECHNICAL DOCUMENT...

  • Page 79: Technical Document

    PRINTING Paper Feed Drive Mechanism PRINTER MODEL-L1 (G182) SERVICE MANUAL G182D006.WMF TECHNICAL DOCUMENT The feed roller [A] is located above the upper tray bottom plate [B], and the friction pad [C]. It allows only one sheet to feed from the paper tray. They are controlled by the paper feed clutch [D].

  • Page 80: Paper Feed Operation

    PRINTING Paper Feed Operation PRINTER MODEL-L1 (G182) SERVICE MANUAL G182D007.WMF A : Paper feed drive gear D : Friction pad B : Paper feed clutch E : Paper feed sensor TECHNICAL DOCUMENT C : Paper feed roller F : Registration sensor The paper feed drive gear [A] always rotates while the main motor rotates, since the paper feed clutch (magnet clutch) [B] is energized to turn the paper feed roller [C].

  • Page 81: Registration

    PRINTING Registration PRINTER MODEL-L1 G182D107.WMF (G182) The registration sensor [A] detects the leading edge of the paper and synchronizes paper feed with the writing of the image on the drum, so that the image and paper match up properly. This sensor also detects paper feed jams. SERVICE MANUAL TECHNICAL DOCUMENT 1-14...

  • Page 82: Paper End Detection

    PRINTING Paper End Detection PRINTER MODEL-L1 (G182) SERVICE MANUAL G182D008.WMF TECHNICAL DOCUMENT The laser unit [A] has the paper end sensor [B] built into it. The paper end sensor detects the presence or absence of paper. The sensor has an actuator that extends through a slot in the paper tray bottom plate [C], so that the sensor is actuated when paper is placed in the upper tray.

  • Page 83: Jam Detection

    PRINTING Jam Detection Jam 1. Paper jam at the paper cassette When the registration sensor does not turn on within 2.65 seconds after the paper pick-up clutch for the paper cassette turns on. Jam 2. Paper did not pass the registration sensor When the registration sensor does not turn off within the specified time for passing each paper size (see below) + 3 seconds after the registration sensor turns on.

  • Page 84: Fusing

    PRINTING 1.2.8 FUSING Overview PRINTER MODEL-L1 (G182) SERVICE MANUAL G182D106 WMF After the image is transferred, the copy paper enters the fusing unit. The image is fused to the copy paper by applying heat and pressure through the use of a hot roller [A] and pressure roller [B].

  • Page 85: Power Save Control

    PRINTING Power Save Control When the main switch is turned on, the machine turns on the fusing lamp. For printing, the machine raises the fusing temperature to 170°C. The fusing temperature is kept at 170°C during printing. [t1] [t2] 170°C PRINTER MODEL-L1 Stand-by (G182)

  • Page 86: Cover Switch

    PRINTING 1.2.9 COVER SWITCH When the front door is opened, the interlock switch will be opened and power supply to the following parts will be cut. G182D014.JPG Power pack Laser diode driver Fan motor Main motor Polygon mirror motor Fusing lamp 1-19...

  • Page 87: Paper Feed Drive Release And Fusing Drive Release

    PRINTING 1.2.10 PAPER FEED DRIVE RELEASE AND FUSING DRIVE RELEASE PRINTER MODEL-L1 (G182) SERVICE MANUAL TECHNICAL DOCUMENT G182D009.WMF The main motor drives the paper feed unit, the transfer roller, the toner cassette, and fusing unit through a series of gears as follows. Main motor [A] Idle gear 1[B] Idle gear 2 [C]...

  • Page 88: Replacement And Adjustment

    PRINTING PAPER CASSETTE 1.2.10 PAPER FEED DRIVE RELEASE AND FUSING DRIVE 2. REPLACEMENT AND ADJUSTMENT RELEASE The following table shows the part replacement rank, which explains the difficulty of each replacement procedure. Definition: A: Replacement in the field cannot be recommended. (It takes time and needs space.) B: Replacement in the field is recommended.

  • Page 89: Paper Cassette

    PAPER CASSETTE 2.1 PAPER CASSETTE 2.1.1 PAPER CASSETTE [A]: Paper cassette PRINTER MODEL-L1 G182R001.JPG (G182) Side Fence [B]: Side fence gear (pull it out) SERVICE MANUAL TECHNICAL DOCUMENT G182R002.JPG [C]: Side fence – Left Unhook at the rear. [D]: Side fence – Right Unhook at the rear.

  • Page 90: Bottom Plate

    PAPER CASSETTE Bottom Plate [E]: Bottom plate Unhook at both sides of the cassette [F]. Detach from the pin [G] at both sides. G182R004.JPG PRINTER MODEL-L1 (G182) SERVICE MANUAL G182R005.JPG TECHNICAL DOCUMENT Friction Pad [H]: Friction pad (two hooks) NOTE: Be careful not to lose the spring [I].

  • Page 91: Laser Unit

    LASER UNIT 2.2 LASER UNIT WARNING FOR THE LASER UNIT This machine contains a laser beam generator. Laser beams can cause permanent eye damage. Do not open the laser unit or look along the laser beam path while the main power is on. Preparation: 1) Remove the upper unit.
  • Page 92 LASER UNIT CAUTION VORSICHT CATION-CLASS 3B LASER RADIATION WHEN OPEN AVOID EXPOSURE TO THE BEAM VORSICHT-LASERSTRAHLUNG KLASSE 3B WENN ABDECKUNG GEOFFNET NICHT DEM STRAHL AUSSETZEN >PS< 3BLASERCAUTION.WMF PRINTER MODEL-L1 (G182) SERVICE MANUAL TECHNICAL DOCUMENT...

  • Page 93: Fusing Area

    FUSING AREA LASER UNIT 2.3 FUSING AREA CAUTION VORSICHT CATION-CLASS 3B LASER RADIATION 2.3.1 FUSING UNIT WHEN OPEN AVOID EXPOSURE TO THE BEAM VORSICHT-LASERSTRAHLUNG KLASSE 3B WENN ABDECKUNG GEOFFNET NICHT DEM STRAHL AUSSETZEN Preparation: >PS< 1) Remove the upper unit. (See Upper Unit Removal.) 3BLASERCAUTION.WMF PRINTER MODEL-L1 (G182)

  • Page 94: Paper Exit Assembly

    FUSING AREA 2.3.2 PAPER EXIT ASSEMBLY [A]: Fusing cover (1 screw) G182R010.JPG PRINTER MODEL-L1 [B]: Paper exit assembly (2 screws [circled in blue in the lower diagram]) (G182) SERVICE MANUAL TECHNICAL DOCUMENT G182R012.JPG G182R011.JPG...

  • Page 95: Fusing Lamp And Hot Roller

    FUSING AREA 2.3.3 FUSING LAMP AND HOT ROLLER Preparation: Remove the paper exit assembly ( 2.3.2). Fusing Lamp [A]: Fusing lamp (2 screws) PRINTER MODEL-L1 (G182) G182R013.JPG SERVICE MANUAL TECHNICAL DOCUMENT G182R014.JPG G182R015.JPG NOTE: Do not touch the surface of the fusing lamp with bare hands.

  • Page 96: Hot Roller

    FUSING AREA Hot Roller [A]: Electrode (1 screw) G182R019.JPG PRINTER MODEL-L1 [B]: Hot roller (pull it out) NOTE: Do not touch the surface of the hot (G182) roller with bare hands. SERVICE MANUAL TECHNICAL DOCUMENT G182R020.JPG NOTE: When re-assembling, be careful not to damage the hot roller strippers [C].

  • Page 97: Pressure Roller

    FUSING AREA 2.3.4 PRESSURE ROLLER Preparation: Remove the paper exit assembly ( 2.3.2). Remove the fusing lamp and hot roller ( 2.3.3). [A]: Pressure roller (1 bushing [B] and 1 spring [C] at each side) G182R046.JPG PRINTER MODEL-L1 (G182) SERVICE MANUAL TECHNICAL DOCUMENT G182R048.JPG NOTE: When re-assembling, be careful to...

  • Page 98: Thermistor

    FUSING AREA 2.3.5 THERMISTOR Preparation: Remove the paper exit assembly ( 2.3.2). [A]: Thermistor (1 screw) NOTE: When reassembling, do not damage the thermistor, and check that the element touches the hot roller. PRINTER MODEL-L1 (G182) G182R023.JPG SERVICE MANUAL 2.3.6 HOT ROLLER STRIPPERS Preparation: TECHNICAL DOCUMENT Remove the paper exit assembly (...

  • Page 99: Thermostat

    FUSING AREA 2.3.7 THERMOSTAT Preparation: Remove the paper exit assembly ( 2.3.2). Remove the fusing lamp and hot roller ( 2.3.3). [A]: Thermostat (2 screws) PRINTER MODEL-L1 (G182) G182R024.JPG SERVICE MANUAL TECHNICAL DOCUMENT G182R025.JPG 2-12...

  • Page 100: Paper Feed

    PAPER FEED 2.4 PAPER FEED 2.4.1 PAPER FEED ROLLER REMOVAL Preparation: 1) Remove the upper unit. (See Upper Unit Removal.) [A]: Drive assembly (4 screws) PRINTER MODEL-L1 PRINTER MODEL-L1 (G182) (G182) G182R026.JPG SERVICE MANUAL SERVICE MANUAL [B]: Electromagnetic clutch assembly (1 clip) TECHNICAL DOCUMENT TECHNICAL DOCUMENT...
  • Page 101 PAPER FEED Remove the paper feed roller [C] from the shaft. G182R031.JPG PRINTER MODEL-L1 (G182) SERVICE MANUAL TECHNICAL DOCUMENT 2-14...

  • Page 102: Registration Roller

    PAPER FEED 2.4.2 REGISTRATION ROLLER (ALSO KNOWN AS ‘ROLLER DRIVEN’ IN THE PARTS CATALOG) Preparation: 1) Remove the upper unit. (See Upper Unit Removal) 2) Remove the paper tray 3) Remove the toner cartridge [A]: Paper tray guides (2 screws) [B]: Left shield (13 screws &...

  • Page 103: Others

    OTHERS 2.5 OTHERS 2.5.1 TRANSFER ROLLER Preparation: 1) Remove the upper unit. (See Upper Unit Removal.) 2) Remove the toner cartridge. [A]: Transfer roller PRINTER MODEL-L1 [B]: Black bushing (G182) G182R036.JPG SERVICE MANUAL TECHNICAL DOCUMENT G182R035.JPG Remove the transfer roller with a flat-head (-) screwdriver. G182R037.JPG 2-16...

  • Page 104: Fan Motor

    OTHERS OTHERS 2.5.3 MAIN MOTOR REMOVAL 2.5.2 FAN MOTOR Preparation: Preparation: 1) Remove the upper unit. (See Upper Unit Removal.) 1) Remove the upper unit. (See Upper Unit Removal.) 2) Remove the paper tray. 3) Remove the toner cartridge. [A]: Fan motor (1 screw & 1 harness) 4) Remove the laser unit ( 2.2).
  • Page 105 OTHERS 2.5.3 MAIN MOTOR REMOVAL Preparation: 1) Remove the upper unit. (See Upper Unit Removal.) 2) Remove the paper tray. 3) Remove the toner cartridge. 4) Remove the laser unit ( 2.2). [A]: Paper tray guides (2 screws) [B]: Left shield (13 screws & 2 screws at the bottom) [C]: Right shield (9 screws) [D]: Laser shield (4 screws) PRINTER MODEL-L1...

  • Page 106: Psu (Known As 'Power Supply Unit' In The Parts Catalog)

    PSU (KNOWN AS ‘POWER SUPPLY UNIT’ IN THE PARTS CATALOG) (KNOWN AS ‘POWER SUPPLY UNIT’ IN THE PARTS CATALOG) 2.6.1 PSU REMOVAL Preparation 1) Remove the upper unit. (See Upper Unit Removal.) 2) Remove the paper tray. 3) Remove the toner cartridge. 4) Remove the right &...

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