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Canon LBP-800 Service Manual

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SERVICE
MANUAL
REVISION 0
RY8-13A0-000
AUG. 1999
COPYRIGHT
1999 CANON INC.
CANON LBP-800 REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

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Summary of Contents for Canon LBP-800

  • Page 1: Service Manual

    SERVICE MANUAL REVISION 0 RY8-13A0-000 AUG. 1999 COPYRIGHT 1999 CANON INC. CANON LBP-800 REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 2 COPYRIGHT © 1999 CANON INC Printed in Japan Imprimé au Japon Use of this manual should be strictly supervised to avoid disclosure of confi- dential information. Prepared by PERIPHERAL PRODUCTS QUALITY PLANNING DIV. PERIPHERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT. CANON INC.

  • Page 3: Chapter 1 Product Information

    PREFACE PREFACE This Service Manual contains basic information required for after-sales service of the laser beam printer LBP-800 (hereinafter referred to as the "printer"). This information is vital to the service technician in maintaining the high print quality and performance of the printer. This manual consists of the following chapters: Chapter 1: Product information Features, specifications, operation, and installation...
  • Page 4 PREFACE DTP system This manual was produced on an Apple PowerMacintosh 9500/200 personal computer and output by an Apple LaserWriter 16/600 PS laser beam printer; final pages were printed on AGFA Selectset avantra 25. All graphics were produced with Macromedia FreeHand (J), and all documents and page layouts were created with QuarkXPress (E).

  • Page 5: Table Of Contents

    BY THE CUSTOMER ....1-10 Unit ........1-4 VII. OPERATION ......1-11 B. Toner Caution...... 1-4 A. Canon Advanced Printing C. Ozone Safety ....... 1-4 Technology (CAPT)....1-11 IV. PARTS OF THE PRINTER ..1-5 B. Microsoft Windows NT4.0 ..1-12 A.
  • Page 6 PREFACE B. Paper Top Sensor/ B. Main Motor ......3-18 Paper-out Sensor ....3-16 C. Pick-up Solenoid....3-18 C. Power Switch/Test Print Switch/ VII. PCBs......... 3-19 Door Open Detection Switch/ A. Locations......3-19 Paper Delivery Sensor..3-16 B. Interface Controller PCB..3-20 D.
  • Page 7 CHAPTER 1 PRODUCT INFORMATION FEATURES........ 1-1 INSTALLATION ......1-7 SPECIFICATIONS ...... 1-2 VI. MAINTENANCE, CHECKS III. SAFETY INFORMATION..1-4 BY THE CUSTOMER ....1-10 IV. PARTS OF THE PRINTER ..1-5 VII. OPERATION ......1-11...

  • Page 9: Features

    600 DPI. 2. Employment of Canon Advanced Printing Technology With Canon Advanced Printing Technology in which data are processed within a host comput- er, this printer needs no PDL converting/image processing. As a result, it has increased its speed performance and reduced the cost.

  • Page 10: Specifications

    76.2 mm(W) x 127 mm(L) ~ 216 mm(W) x 356 mm(L) sized paper (64 g/m to 135 g/m Canon recommended paper) and above men- tioned paper •Multi-purpose tray 76.2 mm(W) x 127 mm(L) ~ 216 mm(W) x 356 mm(L) sized paper...
  • Page 11 4. Only plain paper and recycled paper can be delivered face-down. 5. To print duplex manually, uncurl the face-up delivered paper and set it in the multi- purpose tray. 2. Interface controller 1) Printing System Canon Advanced Printing Technology 2) ROM capacity 8 KB 3) RAM capacity 512 KB...

  • Page 12: Safety Information

    CHAPTER 1 III. SAFETY INFORMATION A. Handling the Laser/Scanner Unit An invisible laser beam is emitted within the laser/scanner unit. The laser beam can cause eye damage if exposed, so be sure not to disassemble the laser/scanner unit. It is not necessary to adjust the laser/scanner unit in this printer in the filed.

  • Page 13: Parts Of The Printer

    CHAPTER 1 IV. PARTS OF THE PRINTER A. External View 1. External view of this printer 1: Multi-purpose tray 2: Paper width guide 3: Manual feed slot 4: Delivery switching lever 5: Face-up delivery port 6: Cartridge cover unit 7: Face-down delivery tray 8: Delivery sub-tray 9: Paper pick-up sub-tray Figure 1-4-1...

  • Page 14: Cross Section

    CHAPTER 1 B. Cross Section 1. Cross section of this printer 1: Face-down delivery roller 2: Fixing film unit 3: EP-22 cartridge 4: Primary charging roller 5: Laser/scanner unit 6: Pick-up roller 7: Separation pad 8: Feed roller 9: Developing cylinder 10: Transfer charging roller 11: Photosensitive drum 12: Pressure roller...

  • Page 15: Installation

    CHAPTER 1 V. INSTALLATION A. Precautions 1) This product has been carefully adjusted and strictly inspected before packing and shipping. To make the operation as intended, it is important to install it correctly. Service engineers must understand the performance of the printer sufficiently, install it in the appropriate environment with proper procedures, and operate the necessary checks.

  • Page 16: B. Storage And Handling Of

    CHAPTER 1 B. Storage and Handling of EP-22 Cartridge As time passes, the natural environment will change the cartridge, whether sealed or installed in the printer, or regardless of the number of prints. The progression of this natural change depends largely on the storage and installation environment, therefore, take special care on stor- age and handling the cartridge.
  • Page 17 CHAPTER 1 c. Notes on Handling of Cartridge 1) Before installing a new EP-22 cartridge in the printer, hold the cartridge at both sides as shown below, and gently slop it at about 45° right-up and left-up 5 or 6 times to distribute toner evenly.

  • Page 18: Cartridge

    CHAPTER 1 VI. MAINTENANCE, CHECKS BY THE CUSTOMER Maintenance points that should be performed by the customer to maintain the printer at opti- mum level are listed below. Table 1-6-1 Item Customer maintenance Cartridge Shake or replace the cartridge as necessary. External Cover Clean the external cover as necessary.

  • Page 19: Operation

    CAPT is used by installing on Microsoft Windows NT4.0 or Microsoft Windows 95/98. The installation is done using the Canon Advanced Printing Technology disk included with this print- CAPT specifies the paper size, document size, number of copies and print quality on the com- puter screen.

  • Page 20: B. Microsoft Windows Nt4.0

    CHAPTER 1 B. Microsoft Windows NT4.0 1. Installation of CAPT A Canon Advanced Printing Technology installation disk is packed with this printer. The types and contents are as follows: Types: • A 5-inch CD-ROM disk Contents: • CAPT driver • Language monitor •...
  • Page 21 CHAPTER 1 b. Installation Procedures Connecting the printer as a local printer This section describes how to install CAPT for using the printer as a local printer. Install it to the host computer by following the procedures below. For details, see the User’s Manual packed with the printer. 1.
  • Page 22 CHAPTER 1 Connecting to a network printer Follow the procedures described in this section to perform the installation on a client PC when you want to designate the PC to which the printer is connected as a network print server and to use the printer as a network printer.
  • Page 23 How to open the Printer Properties varies in each application. See the application manual. From the Microsoft Windows Shortcut • To create a shortcut, open the Printers folder, drag the Canon LBP-800 icon with the right mouse button to the desktop, and select the Create Shortcut(s) Here. (See the Microsoft Windows NT User’s Guide for details.) Double-click on the shortcut icon to open the print-...
  • Page 24 The Printer Properties contains 6 tabs common to all Microsoft Windows NT printers accord- ing to the Microsoft Windows User Interface model. You can click on each tab or move the focus and then press right or left cursor to open the tab and make settings. Canon LBP-800 Properties General Ports...
  • Page 25 The settings in this tab apply to the entire printer driver. This tab can be opened by clicking the General tab in the Properties dialog box. The General tab is shown in Figure 1-7-4. Canon LBP-800 Properties General Ports Scheduling Sharing Security...
  • Page 26 CHAPTER 1 Print Processor Dialog Box In the Print Processor dialog box, you can specify the print processor and spool data type used for this printer. The Printer Processor dialog box can be opened by clicking on the Print Processor button in the General tab in the Properties dialog box. The Print Processor dialog box is shown in Figure 1-7-5.
  • Page 27 Use this tab to select the port to which the printer is connected. It can be opened by clicking the Ports tab in the Properties dialog box. The ports tab is shown in Figure 1-7-6. Canon LBP-800 Properties General Ports Scheduling Sharing Security...
  • Page 28 CHAPTER 1 Printer Ports Dialog Box Use this dialog box to add ports to which the printer is to be connected if necessary. It can be opened by clicking the Add Ports button in the Ports tab of the Properties dialog box. The printer Ports dialog box is shown in Figure 1-7-7.
  • Page 29 CHAPTER 1 Configure LPT Ports Dialog Box Use this dialog box to set the time-out period until the PC notifies the user that the printer does not respond. It can be opened by clicking the Configure Ports button in the Ports tab. The configure LPT Port dialog box is shown in Figure 1-7-8.
  • Page 30 Use this tab to schedule a set time for printing, to set printing priorities, and to specify the print data spooling method. It can be opened by clicking the Scheduling tab in the Properties dialog box. The Scheduling tab is shown in Figure 1-7-9. Canon LBP-800 Properties Scheduling Sharing General Ports Security Select Forms...
  • Page 31 CHAPTER 1 (10)Keep documents after they have printed : Sets the spooler not to delete documents after they have been printed. 1 - 23...
  • Page 32 Use this tab to designate whether or not the printer is shared with other clients through a net- work. It can be opened by clicking on the Sharing tab in the Properties dialog box. The sharing tab is shown in Figure 1-7-10. Canon LBP-800 Properties Scheduling Sharing General Ports...
  • Page 33 Use this tab to set the security for the printer such as Permissions, Auditing, and Ownership. It can be opened by clicking the Security tab in the Property dialog box. The security tab is shown in Figure 1-7-11. Canon LBP-800 Properties Scheduling Sharing Security Select Forms...
  • Page 34 It can be opened by clicking the Permissions button in the Security tab of the Properties dialog box. The Printer Permissions dialog box is shown in Figure 1-7-12. Printer Permissions Printer: Canon LBP-800 Owner: Administrators Name: Administrators Full Control...
  • Page 35 The Printer Auditing dialog box can be opened by clicking the Auditing button in the Security tab of the Properties dialog box. The Printer Auditing dialog box is shown in Figure 1-7-13. PrinterAuditing Printer: Canon LBP-800 Cancel Name: Add... Administrators...
  • Page 36 Use this tab to set user defined paper. It can be opened by clicking the Select Forms tab in the Property dialog box. The Select Forms tab is shown in Figure 1-7-14. Canon LBP-800 Properties Select Forms General Ports Scheduling Sharing Security...
  • Page 37 From the Microsoft Windows shortcut • To create a shortcut, open the Printers folder, drag the Canon LBP-800 icon with the right mouse button to the desktop, and select the Create the Shortcut(s) Here. (See the Microsoft Windows NT User’s Guide for details.) Double-click on the shortcut icon to open the printer window and then select the Document Defaults in the Printer menu.
  • Page 38 The dialog box consists of 3 tabs shown below. You can click each tab or move the focus and then press the right or left cursor key to open the tab and make settings. Canon LBP-800 Default Page Setup Finishing Quality Figure 1-7-15 (1) Page Setup : Sets items frequently used in general printing.
  • Page 39 CHAPTER 1 • Profile The Profile reads and stores each item of the Page Setup tab, Finishing tab and Quality tab, which performs operations of Add, Edit, and Select. The Profile stores up to 50 items for each login user. As it stores in each login user, each Profile cannot be referred among them. If the name of the printer driver is changed to another, all the profiles already registered will be unreadable.
  • Page 40 CHAPTER 1 Add Profile Dialog Box The Add Profile dialog box adds new Profile. It can be opened by clicking the Add button in the Document Defaults dialog box. The Add Profile dialog box is shown in Figure 1-7-18. Add Profile Name : Icon : Comment :...
  • Page 41 CHAPTER 1 Edit Profile Dialog Box The Edit Profile dialog box edits the Profile. It can be opened by clicking the Edit button in the Document Defaults dialog box. The Edit Profile dialog box is shown in Figure 1-7-19. Edit Profile Profile List : (11) Profile01...
  • Page 42 Use this tab to set items frequently used in general printing. The items set in the Page Setup tab can be opened by clicking the Page Setup tab in the Document Defaults dialog box. The Page Setup tab is shown in Figure 1-7-20. Canon LBP-800 Default Page Setup Finishing Quality Add...
  • Page 43 CHAPTER 1 View Settings Dialog Box The View Settings dialog box displays in tab the list of setting information. It can be opened by clicking the View Settings button in the Page Setup dialog box. The View Setup dialog box is shown in Figure 1-7-21. View Settings Page Setup Finishing Quality Page Size :...
  • Page 44 CHAPTER 1 Overlay Dialog Box Use this dialog box to set items relating to Overlay form. It can be opened by clicking the Overly button in the Page Setup dialog box. The Overlay dialog box is shown in Figure 1-7-22. Overlay File Name : (11)
  • Page 45 The Finishing tab specifies either to print, in collate or page. The Finishing tab can be opened by clicking on the Finishing tab in the Document Defaults dialog box. The Finishing tab is shown in Figure 1-7-23. Canon LBP-800 Default Page Setup Finishing Quality Add...
  • Page 46 CHAPTER 1 Preferences Dialog Box The preference dialog sets the printing environment. It can be opened by clicking the Preferences button in the Finishing dialog box. The Preferences dialog box is shown in Figure 1-7-24. Preferences Execute printing even when Paper Size Mismatch detected EMF Spooling Cancel Restore Defaults...
  • Page 47 The Quality tab sets items relating to printing image. It can be opened by clicking the Quality tab in the Document Defaults dialog box. The Quality tab is shown in Figure 1-7-25. Canon LBP-800 Default Page Setup Finishing Quality Add...
  • Page 48 CHAPTER 1 More Options Dialog Box The more Options Dialog box sets the printing environment. The More Options dialog box can be opened by clicking the More Options dialog box in the Quality dialog box. The More Options dialog box is shown in Figure 1-7-26. More Options Toner Density : Light...
  • Page 49 Option dialog box of the Status Window (See Page 1-44.) • You quit the Windows while the Status Window is open, and then restart the Windows. The Printer Status Window dialog box is shown in Figure 1-7-27. Canon LBP-800 Job Options Help Printer Raedy...
  • Page 50 CHAPTER 1 (7) Tool bar : Consists of 3 buttons; the Pause Job button, Resume job button and Delete job button. (8) Status bar : Displays the printer port to which the printer is connected. When performing a menu operation, it displays the status relating to its menu. 1 - 42...
  • Page 51 CHAPTER 1 • Options menu The Options menu sets the status options and ports, and prints a cleaning page. The Option menu is shown on Figure 1-7-28. Canon LBP-800 Options Help Status Options... Port Setting... Cleaning Printing Job Printed Job...
  • Page 52 CHAPTER 1 Status Options Dialog Box The Status Options dialog box displays the Status Window, and sets the items in the Voice mes- sages. It can be opened by selecting the Status Options command in the Options menu of the Status Window.
  • Page 53 CHAPTER 1 Port Setting Dialog Box The Port Setting dialog box sets the Port(s). The Port Setting dialog box can be opened by select- ing the Port Setting command in the Option menu of the Status Window. It can be opened only when the printer is connected to the local parallel port. The Port Setting dialog box is shown in Figure 1-7-30.
  • Page 54 It does not operate on the Network client PC. <Starting the Trouble Shooter> To start Trouble Shooter, double-click on the Canon LBP-800 Trouble Shooter icon in the Windows Printing System group. Trouble Shooter Dialog Box (starting-up) The following dialog box appears when the Trouble Shooter is started.
  • Page 55 CHAPTER 1 When the Trouble Shooter is executed by clicking the Yes button, it checks the items below. Checks the Local • Displays the free disk and free memory. • Checks the installed files. • Checks the selected ports. • Checks the resistory. •...
  • Page 56 Trouble Shooter Dialog Box (exiting) Canon LBP-800 Trouble Shooter Canon LBP-800 on LPT1:[local] settings are correct. Result: Canon LBP-800 on LPT1:[local] trouble shooting - 4/5/99 2:19:55 AM Free Disk Space: 23MB Free Memory. 0KB LPT1CECPStandard parallel port All files are expected versions.

  • Page 57: C. Microsoft Windows 95/98

    CHAPTER 1 C. Microsoft Windows 95/98 1. Installation of CAPT A Canon Advanced Printing System disk is packed with this printer. Types and contents are as follows: Types • A 5 inch CD-ROM disk Contents • CAPT driver • Language monitor •...
  • Page 58 CHAPTER 1 b. Installation Procedures Connecting the printer as a local server This section describes how to install CAPT for using this printer as a local printer. Install it by following the procedures below. For details, see the User’s Manual packed with this printer. 1.
  • Page 59 CHAPTER 1 Connecting to a network printer Follow the procedures described in this section to perform the installation on a client PC when you want to designate the PC to which the printer is connected as a network print server, and to use the printer as a network printer.
  • Page 60 How to open the Printer Properties varies in each application. See the application manual. From the Microsoft Windows Shortcut • To create a shortcut, open the Printers folder, drag the Canon LBP-800 icon to the desk- top pressing the CTPL key, (See the Microsoft Windows 95/98 User’s Guide for details.) Double-click on the shortcut icon to open the printer window and select the Properties in the Printer menu.
  • Page 61 CHAPTER 1 Canon LBP-800 Properties General Details Sharing Page Setup Finishing Quality Canon LBP-800 Figure 1-7-33 (1) General : Sets the Page separator output and executes a test print. (2) Details : Sets the printer port, printer driver and time out.
  • Page 62 Use this tab to set items frequently used in general printing. The Page Setup tab can be opened by clicking the Page Setup tab in the Properties dialog box. The Page Setup tab is shown in Figure 1-7-35. Canon LBP-800 Properties Page Setup Finishing Quality General Details Sharing Add...
  • Page 63 CHAPTER 1 Custom Paper Size Dialog Box The Custom Paper Size dialog sets user defined paper. The Paper Size dialog box can be opened by clicking on the Custom Paper Size button in the Page Setup dialog box. The Custom Paper Size dialog box is shown on Figure 1-7-36. Custom Paper Size Setting Costom Paper List : Form 1...
  • Page 64 The Finishing tab specifies either to print, in collate or page. The Finishing tab can be opened by clicking on the Finishing tab in the Properties dialog box. The Finishing tab is shown in Figure 1-7-37. Canon LBP-800 Properties Page Setup Finishing Quality General Details Sharing Add...
  • Page 65 CHAPTER 1 Preferences Dialog Box The Preferences dialog box sets the printing environment. It can be opened by clicking the Preferences button in the Finishing dialog box. The Preferences dialog box is shown in Figure 1-7-38. Preferences Execute printing even when Paper Size Mismatch detected Cancel Restore Defaults Help...
  • Page 66 The Quality tab sets items for printing image. It can be opened by clicking the Quality tab in the Properties dialog box. The Quality tab is shown in Figure 1-7-39. Canon LBP-800 Properties Page Setup Finishing Quality General Details Sharing Add...
  • Page 67 CHAPTER 1 3. Trouble Shooter When troubles occur in the printer, the Trouble Shooter checks the Microsoft Windows 95/98 configuration settings. If errors are found, the Trouble Shooter reports the errors to the user, and self-corrects if possible. The Trouble Shooter cannot detect problems regarding the hardware such as printer cable and parallel port failure.

  • Page 69: Microsoft Windows 95/98

    CHAPTER 1 D. Printing Environment Setting and Test Printing 1. Microsoft Windows NT4.0 a. Printing Environment Setting A list of printing environment that can be set from the CAPT dialog box is shown below. Note: The values in bold are the default values at the time of shipment from the factory. Table 1-7-1 •...

  • Page 70: Printer Test Page

    (1) Machine Name: Name of the computer specified when Microsoft Windows NT was installed. Windows NT (2) Printer name: Name of the printer driver specified when the printer was installed (normally "Canon LBP-800.") Printer Test Page (3) Printer model: Name of the printer (in case of this printer "Canon LBP-800.")
  • Page 71 CHAPTER 1 2. Microsoft Windows 95/98 a. Printing Environment Setting A list of printing environment that can be set from the CAPT dialog box is shown below. Note: The values in bold are the default values at the time of shipment from the factory. Table 1-7-2 •...

  • Page 72: Printer Test Page

    For details, see “Contents of Test Page.” Contents of Test Page (1) Printer name: Name of the printer driver specified when the printer was installed (normally "Canon LBP-800.") Windows (2) Printer model: Name of the printer (in case of this printer "Canon LBP-800.") Printer Test Page (3) Driver name: File name of the graphics driver.

  • Page 73: Operation And Timing

    CHAPTER 2 OPERATION AND TIMING 1. This chapter describes the printer functions, the relationships between mechanisms and cir- cuits, and the timing of operations. Mechanical linkages are indicated by black and white lines ( ), the flow of control signals by solid arrows ( ), and the flow of groups of signals by outline arrows ( 2.

  • Page 75: Basic Operation

    CHAPTER 2 I. BASIC OPERATION A. Functions Printer functions can be divided into five groups: the video control system, the engine control system, the image formation system, the laser/scanner system, and the paper pick-up/feed sys- tem. VIDEO CONTROL SYSTEM To external device (host computer, etc.) Interface controller PCB LASER/SCANNER SYSTEM ENGINE CONTROL...
  • Page 76 CHAPTER 2 B. Basic Operation Sequence The operation sequence of this printer is controlled by the microcomputer on the engine con- troller PCB. The purpose of each period from that the printer is turned ON until that the main motor stops rotating after completion of printing is stated below. Refer to the appendix for the detailed timing chart.
  • Page 77 CHAPTER 2 C. Power-ON Sequence The sequence from power-ON until the printer enters the STANDBY mode is as follows: 1) Power-ON 2) CPU initialization 3) Start of the video interface communication 0.5 seconds after the status command signal (/SC) turns "H", the video interface communi- cation is ready for operation.

  • Page 78: Engine Control System

    CHAPTER 2 II. ENGINE CONTROL SYSTEM A. Engine Controller PCB 1. Outline The operation sequence of the printer is controlled by the CPU on the engine controller PCB. When the printer is turned ON and enters the STANDBY mode, the CPU outputs signals to drive loads, such as the laser diode, motors, and solenoids, based on the pick-up command and image data input from the interface controller.
  • Page 79 CHAPTER 2 2. Operations a. CPU (IC201) The CPU intstalled in this printer is an 8-bit single-chip microcomputer. This CPU is a single-chip CPU with a built-in ROM and RAM and controls the following print- er operations based on the control program stored in the ROM. 1) Printer sequence control 2) Video interface control 3) High-voltage power supply circuit control...
  • Page 80 CHAPTER 2 3. Engine Controller Input/Output Signals Laser/scanner unit Engine controller PCB +24V J208-4 J802-1 M801 The scanner motor decelerates /DEC when "L." Scanner /ACC The scanner motor accelerates motor when "L." Scanner motor driver circuit J801-8 J208-5 +3.3V Laser diode Video signals /VDO Laser driver...
  • Page 81 CHAPTER 2 Engine controller PCB SW101 J101-1 AC power AC power input input Thermal Fixing film unit fuse J102-1 NEUTRAL FU701 H701 Fixing heater Thermistor J009-2 J206-1 J008-2 FSRTH Fixing heater temperature Fixing heater detection signal temperature TH701 detection EP-22 Cartridge J304 Primary high-voltage output J301...
  • Page 82 CHAPTER 2 B. Fixing Control Circuit 1. Fixing temperature control A plate-shaped fixing heater is installed in the fixing film unit to heat the fixing film. The fixing heater temperature is detected by the thermistor (TH701) on the fixing heater. As the temperature of the fixing heater rises, the resistance of TH701 drops, and the voltage of the FIXING HEATER TEMPERATURE DETECTION signal (FSRTH) decreases.
  • Page 83 CHAPTER 2 2. Fixing heater safety circuit This circuit is located on the engine controller PCB and always monitors the abnormal rise of the fixing temperature. When the output voltage from the thermistor falls below about 0.6V (240°C) due to the ele- vation of the fixing heater temperature, the output of the comparator (IC302) becomes “L”...
  • Page 84 CHAPTER 2 C. High-voltage Power Supply Circuit 1. Outline Engine controller PCB IC201 Primary high voltage circuit Primary charging roller DC voltage J305 generation PRDCC Photosensitive drum circuit J304 IC302 Combined CRGSNS Developing cylinder AC voltage J303 generation circuit Power operational amplifier Transfer charging roller Developing bias circuit...
  • Page 85 CHAPTER 2 2. Operation a. Generation of voltage applied to primary charging roller When the pick-up command is sent from the interface controller, the INITIAL ROTATION period (INTR) starts, and the PRIMARY HIGH VOLTAGE (AC) DRIVE signal (PRACC) is input to the pri- mary high-voltage circuit via the power operational amplifier.
  • Page 86 CHAPTER 2 D. Low-voltage Power Supply Circuit 1. Outline The AC voltage input from the inlet is converted to the DC voltage in the rectification circuit, transformer, and power supply circuits, and then supplied to the printer as +24VDC, +5VDC, and +3.3VDC.
  • Page 87 CHAPTER 2 2. Protective function The power supply circuits of +24VDC and +5VDC are equipped with overcurrent/overvoltage protective functions. These protective functions automatically shut off the output voltage to pro- tect the circuits when overcurrent or abnormal voltage results from troubles such as a short on load.
  • Page 88 CHAPTER 2 E. Video Interface 1. Outline Unlike the conventional video interface, which uses an individual signal line for each signal exchanged between the interface controller and engine controller, this printer uses command status. This section describes the kinds of interface signals between the engine controller and inter- face controller, and gives information of the sequence of printer operation using the interface sig- nals.
  • Page 89 CHAPTER 2 2. Operation When the power is switched ON, the printer enters the WAIT mode. When the printer is ready for operation after the WAIT period, the engine controller sends the ready status to the interface controller to notify that the printer is ready. On receiving the ready status, the interface controller sends the pick-up command to the engine controller.

  • Page 90: Laser/Scanner System

    CHAPTER 2 III. LASER/SCANNER SYSTEM A. Outline The microcomputer (CPU:201) on the engine controller sends the LASER CONTROL signals (CNT0, CNT1) to the laser driver (IC801) on the laser driver PCB. The VIDEO signals (/VDO, VDO) from the interface controller are sent to the laser driver (IC801) on the laser driver PCB through the engine controller.

  • Page 91: Laser Control Circuit

    CHAPTER 2 B. Laser Control Circuit 1. Outline Engine controller PCB Laser driver PCB IC201 /BDI J208F-11 J801F-2 BD sensor +3.3V J208F-12 J801F-1 J208F-5 J801F-8 IC801 J208F-6 J801F-7 Comparator (photodiode) CNT0 J208F-9 J801F-3 CNT1 (laser diode) Sample J208F-9 J801F-4 hold circuit Logic circuit...
  • Page 92 CHAPTER 2 2. Laser diode automatic power control The laser diode automatic power control (APC) is performed by the IC801 to make the laser diode emit the laser beam at a constant intensity. The APC is performed prior to the image formation (Initial APC) and between lines (between line APC).
  • Page 93 CHAPTER 2 Unmasking area 1 mm 1 mm Figure 2-3-3 Notes: 1. The shaded area indicates the area where the laser beam can write. 2. T1 is the range 1mm toward the center from the right and left sides of the Letter size regardless of the paper size specification.

  • Page 94: C. Scanner System

    CHAPTER 2 C. Scanner System The scanner motor control circuit is shown below. Engine controller PCB Laser/scanner unit +3.3V /BDI J801F-2 J208F-11 BD sensor +24VA +24VA J802-1 J208-4 Scanner driver IC J208-3 /ACC J802-2 /ACC Frequency Integration Drive comparator circuit circuit J208-2 J802-3...
  • Page 95 CHAPTER 2 The CPU detects the following failures and error by monitoring /BDI sent from the BD sen- sor, and reports it to the interface controller. 1) Scanner failure The CPU assesses a scanner failure when the /BDI cycle does not reach the specified value within 3.5 seconds after the completion of the initial forced acceleration.

  • Page 96: Image Formation System

    CHAPTER 2 IV. IMAGE FORMATION SYSTEM A. Outline The image formation system is the main part of the printer, and consists of the photosensitive drum, developing unit, charging roller, etc. When a pick-up command is sent from the interface controller to the engine controller, the engine controller drives the main motor to rotate the photosensitive drum, developing cylinder, primary charging roller, and transfer charging roller.

  • Page 97: Print Process

    CHAPTER 2 B. Print Process The major portion of the image formation system is contained in a cartridge as shown in Figure 2-4-2. Laser beam Primary charging roller Cartridge Blade Cleaning blade Photosensitive drum Developing cylinder Static charge eliminator Transfer charging roller Figure 2-4-2 The cartridge used by the printer has a seamless photosensitive drum with the structure shown in Figure 2-4-3.
  • Page 98 CHAPTER 2 Drum cleaning stage Step 7: Drum cleaning Electrostatic latent image formation stage Flow of paper 2. Scanning exposure Direction of drum rotation 1. Primary charging Developing stage 3. Developing Drum cleaning stage 7. Drum cleaning Fixing stage Paper delivery 5.
  • Page 99 CHAPTER 2 Step 1: Primary charging Primary charging roller AC bias Photosensitive drum DC bias Figure 2-4-6 For preparation of latent image formation, a uniform negative potential is applied to the photo- sensitive drum surface. This printer performs primary charge by the method that directly charges the photosensitive drum.
  • Page 100 CHAPTER 2 2. Developing stage The toner is applied to the electrostatic latent image on the surface of the photosensitive drum to form a visible image. This printer performs the toner projection development with a single- component toner. Step 3: Development Stirrer Blade Photosensitive...
  • Page 101 CHAPTER 2 An AC bias is applied to the developing cylinder to help project the toner particles to the drum surface and improve the contrast of the printed image. The center voltage of the AC bias (1460 Vp-p) varies with the developing DC bias. This printer changes the developing DC bias according to the IMAGE DENSITY DATA signal sent from the interface controller.
  • Page 102 CHAPTER 2 4. Fixing stage As the toner image transferred onto the paper in the transfer stage is held to the paper only by the static electricity, even a light touch will smear the image. The toner particles are fused to the paper to make an permanent image by applying pressure and heat to the paper and the toner.
  • Page 103 CHAPTER 2 5. Photosensitive drum cleaning stage The photosensitive drum cleaning stage is to clean the photosensitive drum surface in prepara- tion for the next print operation to obtain crisp image. Step 7: Photosensitive drum cleaning Cleaner container Cleaning blade Photosensitive drum Sweeper strip...

  • Page 104: Pick-Up/Feed System

    CHAPTER 2 V. PICK-UP/FEED SYSTEM A. Outline The printer is equipped with two pick-up sources, the multi-purpose tray and the manual feed slot. Whether or not the multi-purpose tray and the manual feed slot are loaded with paper is detected by the paper-out sensor (PS003). The main motor (M001) starts rotating in about 0.5 seconds after the engine controller receives a pick-up command from the interface controller.
  • Page 105 CHAPTER 2 In the specified period of time after the paper reaches the paper top sensor (PS002), the engine controller sends the /BD signal to the interface controller. The interface controller sends the VIDEO signal to the engine controller based on the /BD signal to form an image on the pho- tosensitive drum.

  • Page 106: Jam Detection

    CHAPTER 2 B. Jam Detection The following paper sensors are provided to detect whether paper is present and whether the paper is fed correctly: • Paper top sensor (PS002) • Paper delivery sensor (PS201) The CPU determines whether paper jam has occurred by checking for the presence of paper in the sensor at the timing stored in the CPU.

  • Page 107: Video Control System

    CHAPTER 2 VI. VIDEO CONTROL SYSTEM A. Interface Controller PCB 1. Outline The interface controller receives print information from external devices such as host comput- ers through interface cables. Print information described above is dot data converted from print data, corresponding to the resource type, in the host computer.
  • Page 108 CHAPTER 2 Figure 2-6-1 DRAM SCIN SCLKIN SCOUT AD[7 .. 0] WR_N RD_N CPUCLK SCLK CPURST_N BDOUT_N Cellbase IC nRESET nVDO X'tal Bi-Directional Parallel I/F Figure 2-6-2 2 - 34...
  • Page 109 CHAPTER 3 THE MECHANICAL SYSTEM PREFACE........3-1 SWITCHES/SENSORS/LEDS ..3-15 EXTERNALS ......3-2 VI. MOTOR/SOLENOID ....3-17 III. MAIN UNITS ......3-5 VII. PCBs......... 3-19 IV. MAIN PARTS ......3-10...

  • Page 111: I. Preface

    CHAPTER 3 I. PREFACE This chapter describes the disassembly and reassembly procedures of the printer. The service technician is to identify the factor of malfunction according to the “Chapter 4 Troubleshooting” and to replace the defective part(s) following the disassembly procedure of each part.

  • Page 112: Ii. Externals

    CHAPTER 3 II. EXTERNALS B. External Covers 1. Lobe 1) Unhook the 2 claws and then turn the A. Locations lobe (right) in the direction of the arrow to remove. Claws Lobe (right) Lobe (right) Cartridge cover unit Figure 3-2-2 Rear cover Front cover Multi-purpose tray...
  • Page 113 CHAPTER 3 2. Cartridge cover unit 4) Unhook the claw with a precision slot 1) Open the cartridge cover unit. head screw driver, and then remove the 2) Pressing the claw, remove the right arm deflector pulling it toward you. from the cartridge cover unit.
  • Page 114 CHAPTER 3 3. Rear cover 4. Front cover 1) Remove the right and left lobes. 1) Remove the rear cover 2) Remove the 2 screws and pull the lower 2) Remove the 2 screws and pull the lower part of the rear cover to the right and part of the front cover to the right and left.
  • Page 115 CHAPTER 3 III. MAIN UNITS 5) Remove the 2 screws and 2 claws, then the duct. A. Laser/Scanner Unit 1) Remove the external covers. 2) Disconnect the connector, and then remove the cable from the cable guide. 3) Remove the 2 screws, then the display unit.
  • Page 116 CHAPTER 3 7) Disconnect the 2 connectors and B. Drive Unit remove the 4 screws. Remove the cable 1) Remove the external covers. from the cable guides and then the 2) Disconnect the connector from the back laser/scanner unit. of the printer. Figure 3-3-5 Figure 3-3-6 Connectors...
  • Page 117 CHAPTER 3 C. Feed Unit 4) Remove the 2 screws, disconnect the 2 1) Performing the engine controller PCB connectors, and then remove the feed removal procedures 1) through 6) on unit. page 3-21, remove the engine controller unit. 2) Unhook the 2 claws and remove the 2 gears and the spring.

  • Page 118: Fixing Film Unit

    CHAPTER 3 D. Delivery Unit E. Fixing Film Unit 1) Open the cartridge cover unit. 1) Remove the external covers. 2) Pressing the claw, remove the face- 2) Remove the delivery unit. down delivery roller holder, and then 3) Make sure that the pressure release slide the face-down delivery roller to the lever is up.
  • Page 119 CHAPTER 3 5) Disconnect the connector and remove the cable from the cable guides. 6) Remove the fixing film unit. Connector Cable guides Cable Fixing film unit Figure 3-3-15 3 - 9...

  • Page 120: Main Parts

    CHAPTER 3 IV. MAIN PARTS A. Locations Pick-up roller Separation pad Transfer charging roller Pressure roller Figure 3-4-1 3 - 10...

  • Page 121: Pick-Up Roller

    CHAPTER 3 B. Pick-up Roller C. Separation Pad 1) Open the cartridge cover unit. 1) Performing the laser/scanner unit 2) Remove the pick-up roller by pulling removal procedures 1) through 5) on the lower part toward you. page 3-5, remove the duct. 2) Performing the drive unit removal pro- cedures on page 3-6, remove the drive unit.
  • Page 122 CHAPTER 3 5) Remove the 3 screws and disconnect 7) Moving the lifting plate unit in the the 2 connectors, and then remove the direction of the arrow, remove the sep- scanner mounting unit. aration pad. Screws Lifting plate unit Separation pad Connectors Scanner mounting unit...

  • Page 123: Transfer Charging Roller

    CHAPTER 3 D. Transfer Charging Roller E. Pressure Roller 1) Open the cartridge cover unit. 1) Performing the drive unit removal pro- 2) Holding the 2 claws on the left side of cedures on page 3-6, remove the drive the bushing, lift the transfer charging unit.

  • Page 124: Pressure Roller

    CHAPTER 3 5) Remove the 2 claws. Remove the fixing bias contact unit by pulling it toward you. Claws Fixing bias contact unit Figure 3-4-9 6) Remove the gear. Lift up the right shaft and slide it to the right to remove the pressure roller.

  • Page 125: Switches/Sensors/Leds

    CHAPTER 3 V. SWITCHES/SENSORS/LEDS A. Locations LED601 PS003 SW101 PS002 SW201 PS201 SW301 SW101: Power switch (Engine controller PCB) SW201: Test print switch (Engine controller PCB) SW301: Door open detection switch (Engine controller PCB) PS002: Paper top sensor PS003: Paper-out sensor PS201: Paper delivery sensor (Engine controller PCB) LED601: Display unit LED (Display PCB) Figure 3-5-1...

  • Page 126: Paper Top Sensor/Paper-Out Sensor

    CHAPTER 3 B. Paper Top Sensor/Paper-out Sensor D. Display Unit LED 1) Performing the feed unit removal proce- 1) Performing the display PCB removal dures on page 3-7, remove the feed procedures on page 3-23, remove the unit. display PCB. 2) Remove the paper top sensor or paper- out sensor.

  • Page 127: Motor/Solenoid

    CHAPTER 3 VI. MOTOR/SOLENOID A. Locations SL001 M001 M001: Main motor SL001: Pick-up solenoid Figure 3-6-1 3 - 17...

  • Page 128: B. Main Motor

    CHAPTER 3 B. Main Motor C. Pick-up Solenoid 1) Performing the drive unit removal pro- 1) Performing the drive unit removal pro- cedures on page 3-6, remove the drive cedures on page 3-6, remove the drive unit. unit. 2) Remove the 2 screws, and then the 2) Disconnect the connector from the main motor.

  • Page 129: Vii. Pcbs

    CHAPTER 3 VII. PCBs A. Locations Interface controller PCB Engine controller PCB Display PCB Figure 3-7-1 3 - 19...
  • Page 130 CHAPTER 3 B. Interface Controller PCB 3) Disconnect the 2 connectors and 1) Remove the 3 screws remove the interface controller unit. Screws Connectors Interface controller unit Interface controller PCB Figure 3-7-2 Figure 3-7-4 2) Remove the 3 screws and pull the inter- face controller unit to place it down.

  • Page 131: C. Engine Controller Pcb

    CHAPTER 3 C. Engine controller PCB 5) Remove the two screws on the back of 1) Remove the external covers. the printer, and disconnect the two con- 2) Performing the interface controller PCB nectors. removal procedures 1) through 3) on page 3-20, remove the interface con- troller unit.
  • Page 132 CHAPTER 3 7) Remove the 5 screws and disconnect a. Fuses the 3 connectors, and then remove the 1) Performing the engine controller PCB engine controller PCB. removal procedures 1) through 6) on page 3-21, remove the engine controller unit. 2) Remove the fuses.
  • Page 133 CHAPTER 3 D. Display PCB 1) Remove the external covers. 2) Remove the 2 screws, disconnect the connector, and then remove the display unit. Screws Connector Display unit Display PCB Figure 3-7-12 3) Remove the screw and then the display PCB.

  • Page 135: Troubleshooting

    CHAPTER 4 TROUBLESHOOTING PREFACE........4-1 VI. MALFUNCTION STATUS IMAGE DEFECTS ...... 4-6 TROUBLESHOOTING....4-17 III. JAMS TROUBLESHOOTING..4-12 VII. MEASUREMENT AND IV. TRANSPORT ADJUSTMENT......4-20 TROUBLESHOOTING....4-15 VIII. MAINTENANCE AND MALFUNCTION SERVICING ....... 4-22 TROUBLESHOOTING....4-16 IX. LOCATION OF CONNECTORS..4-27...

  • Page 137: Preface

    CHAPTER 4 I. PREFACE A. Malfunction Diagnosis Flowchart The malfunctions that occur in the printer are mainly classified to five factors; “image defects”, “jams”, “transport defect”, “malfunction”, and “malfunction status”. If a malfunction occurred in the printer, the service technician is to identify the factor accord- ing to the flowchart and then to rectify the problem according to the action procedures of each malfunction.
  • Page 138 CHAPTER 4 Initial check execution Power ON Refer to the item, "malfunction Displays "operator call" Displays "READY"? troubleshooting" or "service call"? Do you make Refer to the item, "malfunction test print? (Note 1) status troubleshooting" Make a test print Occurs paper jam? Refer to the item, "paper jams"...
  • Page 139 CHAPTER 4 Notes: 1. Before executing a test print, make sure to select the pick-up source and delivery source that were used when the malfunction occurred according to the information given by the user. If the information is not available, make test prints with all feasible combination of paper source and delivery source in the printer, and find out the factor.

  • Page 140: Initial Check

    CHAPTER 4 B. Initial Check Check the following items before making a diagnosis of malfunction. If any failure is found, the service technician is to clear problems and to give instructions to the user. 1. Installation environment Make sure that the requirements stated below meet when installing the printer. a.

  • Page 141: Test Print

    CHAPTER 4 C. Test Print The test print is divided into two types: engine test print and controller test print. If an image defect occurred in this printer, make a test print and assess the abnormality of the printer. 1. Engine test print Execution of a test print prints the test pint pattern shown in Figure 4-1-3.

  • Page 142: Image Defects Troubleshooting

    CHAPTER 4 II. IMAGE DEFECTS TROUBLESHOOTING Perform troubleshooting according to the malfunction diagnosis flowchart (Figure 4-1-1). If an “image defect” is found, the defective part must be located and rectified by the following proce- dure. Table 4-2-1 Image defects Defects Additional explanation 2-1 Light Output very light image.
  • Page 143 CHAPTER 4 5) Defective laser/scanner unit Action: Replace the laser/scanner unit. 6) Defective engine controller PCB Action: Replace the engine controller PCB. II-2. Dark <Possible causes> 1) The image density is not adjusted correctly. Action: Adjust the image density by operating the external device. 2) Poor contact in the drum grounding contact on the engine controller PCB and cartridge con- tact.
  • Page 144 CHAPTER 4 2) Defective primary charging roller Action: Replace the cartridge. 3) Defective engine controller PCB. Action: Replace the engine controller PCB. II-5. Dirt on back of paper <Possible causes> 1) Periodic dirt (transfer charging roller, pressure roller) Action: Identify and clean the dirty roller according to Table 4-2-2 on page 4-11. If dirt can- not be removed, replace the dirty roller.
  • Page 145 CHAPTER 4 2) Circumferential scars on the photosensitive drum Action: Replace the cartridge. 3) Defective developing cylinder Action: Replace the cartridge. 4) Foreign materials are deposited on the laser outlet of the printer or the laser inlet of the car- tridge.
  • Page 146 CHAPTER 4 2) Dirty or deformed transfer charging roller. Action: Replace the transfer charging roller. 3) Defective photosensitive drum or developing cylinder Action: Replace the cartridge. II-12. Poor fixing <Possible causes> 1) The nip width of the fixing unit is not within specification Action: Replace the fixing pressure units.
  • Page 147 CHAPTER 4 3) Paper top sensor lever Action: Replace the lever if it does not move smoothly or is damaged. Table 4-2-2 Periodical dirt and spots appearing on the image Phenomenon Diameter Period of the image Susceptible location Dirt on back Blank (mm) (mm)

  • Page 148: Jams Troubleshooting

    CHAPTER 4 III. JAMS TROUBLESHOOTING Perform troubleshooting according to the malfunction diagnosis flowchart (Figure 4-1-1). If a “jams” is found, the defective part must be located and rectified by the following procedure. The paper route can be divided into two sections: 1) paper pick-up and feed unit and 2) fix- ing and delivery unit.
  • Page 149 CHAPTER 4 III-1. Paper pick-up unit <Possible causes> 1) The paper top sensor lever does not move smoothly or is damaged. Action: Replace the paper top sensor lever if damaged. If this does not rectify the situation, replace the sensor (PS002). 2) Defective paper top sensor lever spring Action: Set the spring in the right position if out of place.
  • Page 150 CHAPTER 4 4) The pressure roller does not rotate smoothly. Action: Check whether the gear is worn or damaged. If the pressure roller is worn, replace 5) Deformed or damaged fixing film unit or pressure roller Action: If deformed or damaged, replace it. 6) The paper delivery sensor lever does not move smoothly or is damaged.

  • Page 151: Transport Troubleshooting

    CHAPTER 4 IV. TRANSPORT TROUBLESHOOTING Perform troubleshooting according to the malfunction diagnosis flowchart (Figure 4-1-1). If a “transport defect” is found, the defective part must be located and rectified by the following pro- cedure. IV-1. Multiple feed <Possible causes> 1) Worn or dirty separation pad surface Action: Clean the separation pad surface if dirty.

  • Page 152: Malfunction Troubleshooting

    CHAPTER 4 V. MALFUNCTION TROUBLESHOOTING Perform troubleshooting according to the malfunction diagnosis flowchart (Figure 4-1-1). If an “malfunction” is found, the defective part must be located and rectified by the following proce- dure. V-1. No AC power <Possible causes> 1) Blown fuse (FU101) Action: Refering to page 3-22 in Chapter 3, replace the fuse (FU101).

  • Page 153: Malfunction Status Troubleshooting

    CHAPTER 4 VI. MALFUNCTION STATUS TROUBLESHOOTING Perform troubleshooting according to the malfunction diagnosis flowchart (Figure 4-1-1). If an “malfunction status” is found, the defective part must be located and rectified by the following procedure. VI-1. Laser failure/BD failure <Possible causes> 1) The laser shutter cannot be opened due to the damaged claw of the cartridge cover.
  • Page 154 CHAPTER 4 2) Defective paper delivery sensor lever Action: Replace the sensor lever if damaged. 3) Defective paper top sensor spring Action: Replace the spring if damaged. 4) Defective paper top sensor lever Action: Replace the lever if damaged. 5) Defective engine controller PCB Action: Replace the engine controller PCB.
  • Page 155 CHAPTER 4 2) Defective cartridge Action: Replace the cartridge. 3) Defective engine controller PCB Action: Replace the engine controller PCB. 4 - 19...

  • Page 156: Adjustment

    CHAPTER 4 VII. MEASUREMENT AND ADJUSTMENT A. Mechanical Adjustment 1. Checking the nip width of the pressure roller The fixing unit is not designed to allow adjustment of the pressure (nip width); however, the incorrect nip width can cause fixing problems. Follow the procedures below to check the nip width: 1) Make an all-black print of A4 size using an EP-22 cartridge, and bring the print to the cus- tomer’s site.

  • Page 157: And Switches On Pcbs

    CHAPTER 4 C. LEDs, Test Pins, Jumpers and Switches on PCBs Only the LEDs, test pins, jumpers, and switches required during the after-sales service in the field are listed below. All other test pins, etc. are for the factory use only. The adjustment and check using these test pins, etc.

  • Page 158: Periodic Replacement

    CHAPTER 4 VIII. MAINTENANCE AND SERVICING A. Periodic Replacement Parts This printer does not have any periodic replacement parts. Note: Periodic replacement parts are the parts that must be replaced at regular intervals, even if they are functioning properly and show no signs of wear. (Failure of these parts can seriously affect printer performance.) These parts should be replaced during a regular service visit closest to the end of the parts expected life.

  • Page 159: Cleaning During A Service Visit

    CHAPTER 4 D. Cleaning During a Service Visit Fixing unit entrance guide Pick-up roller Separation pad Transfer charging roller Figure 4-8-1 4 - 23...
  • Page 160 CHAPTER 4 Following the procedures below, clean the printer during a service visit. 1. Fixing unit entrance guide Clean with dry lint free paper. 2. Pick-up roller Clean with dry lint free paper. 3. Separation pad Clean the rubber area with dry lint free paper. 4.

  • Page 161: Standard Tools

    CHAPTER 4 E. Standard Tools The standard tools required to service the printer are listed below. Table 4-8-1 Tool No. Remark Tool name Tool case TKN-0001 Jumper wire TKN-0069 With a clip Clearance gauge CK-0057 0.02 to 0.3mm Phillips screwdriver CK-0101 M4, M5 Length : 363mm Phillips screwdriver...

  • Page 162: List Of Lubricants And Cleaners

    CHAPTER 4 G. List of Lubricants and Cleaners Table 4-8-2 Name Components Remarks MEK (methyl CO-C Cleaning: oil and • Purchase locally ethyl ketone) toner stains • Highly flammable: keep away from flame Lubricant Special oil Apply to gears and •...

  • Page 163: Location Of Connectors

    CHAPTER 4 IX. LOCATION OF CONNECTORS J801 J802 J003 J702 J102 J002 Å@ J211 J204 J208 J703 J201 J206 J008 J601 J007 J401 J901 Figure 4-9-1 4 - 27...

  • Page 165: Appendix

    APPENDIX GENERAL TIMING CHART ..A-1 III. LIST OF SIGNALS ..... A-5 GENERAL CIRCUIT DIAGRAM ... A-3 IV. MESSAGES TABLE ....A-7...

  • Page 167: I. General Timing Chart

    APPENDIX I. GENERAL TIMING CHART A. Timing Chart for Printing Two A4-size Sheet Continuously Power ON (Unit : Seconds) Sequence WAIT STBY INTR PRINT LSTR STBY Between-page temperature control (Note1) 100 C control (Note2) Fixing heater (H701) Print temperature control Pick-up command Main motor (M001) Scanner motor (M801)

  • Page 169: Ii. General Circuit Diagram

    APPENDIX II. GENERAL CIRCUIT DIAGRAM A. Engine Controller PCB Toner cartridge FU701 J702F J702M H701 HVT connector TH701 Fixing film unit J102F J102M J703M SW101 INL101 J703F J206M J206F J009M J009F FSRTH J304 J302 J301 J303 J008F J008M Paper delivery Test print switch sensor SW201...

  • Page 170: B. Interface Controller Pcb

    APPENDIX B. Interface Controller PCB (Pararell Interface Connector) /STROBE DATA 1 DATA 2 DATA 3 DATA 4 DATA 5 DATA 6 DATA 7 Interface Controller PCB DATA 8 /ACK BUSY PERROR SELECT /INIT /AUTOFD /FAULT N.C. N.C. N.C. F.GND N.C. /SELECTIN +3.3V SCLK...

  • Page 171: List Of Signals

    APPENDIX III. LIST OF SIGNALS A. Engine Controller Connector Abbreviation I/O Logic Signal name J102 NEUTRAL AC power input AC power input J201 +24VM +24VM 3.3V SCLK SERIAL CLOCK signal STATUS COMMAND signal BEAM DETECTION signal /RESET RESET signal /VDO VIDEO signal VIDEO signal 3.3V...
  • Page 172 APPENDIX Connector Abbreviation I/O Logic Signal name J211 /PISNS PAPER PICK-UP SENSOR signal PAPERSNS PAPER-OUT SENSOR signal J301 DEVELOPING HIGH-VOLTAGE DRIVE signal J302 TRANSFER HIGH-VOLTAGE DRIVE signal J303 J304 PRIMARY CHARGING HIGH-VOLTAGE DRIVE signal J401 MAIN MOTOR DRIVE signal MAIN MOTOR DRIVE signal MAIN MOTOR DRIVE signal MAIN MOTOR DRIVE signal A - 6...

  • Page 173: Messages Table

    Error message area. • Idling status • Printing status • Status not available • Error status Canon LBP-800 Job Options Help Message area Printer Raedy Error message area Printed Job...
  • Page 174 APPENDIX 1. Idling status The idling status is defined that printing jobs are not contained in the printer, and no troubles for printing are found. The following 3 messages are indicated for the idling status: Message area: Printer Ready Error message area: None Indicated regularly when the status window is started up.
  • Page 175 APPENDIX Message area: Check Print Server Error message area: The printer server is down or the server status window is not active. Indicated when the printer is connected as a network printer, and the status window in the server is not active. Message area: Getting status Error message area: Please wait a moment Indicated when the port status has not been received, as the local port to which the printer...
  • Page 176 APPENDIX Message area: Service Error Error message area: Printer error. Contact the store where you bought the printer. Indicated when service errors occur in the printer engine. Perform the Trouble Shooting in Chapter 4. Message area: Clear Paper Jam Error message area: 1.Open cover 2.Remove toner cartridge 3.Remove jammed paper Indicated when paper jam occurs.
  • Page 177 Prepared by PERIPHERAL PRODUCTS QUALITY PLANNING DIV. PERIPHERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT. CANON INC Printed in Japan REVISION 0 ( AUG. 1999 ) 5-1, Hakusan 7–chome, Toride-City, Ibaraki-Pref. 302-8501, Japan...
  • Page 178 The printing paper contains 70% waste paper. PRINTED IN JAPAN (IMPRIME AU JAPON) 0899AB0.50 CANON INC.

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