Use of this manual should be strictly supervised to avoid disclosure of confidential information.
Symbols Used
This documentation uses the following symbols to indicate special information:
SymbolDescription
Indicates an item of a non-specific nature, possibly classified as Note, Caution, or Warning.
Indicates an item requiring care to avoid electric shocks.
Indicates an item requiring care to avoid combustion (fire).
Indicates an item prohibiting disassembly to avoid electric shocks or problems.
Indicates an item requiring disconnection of the power plug from the electric outlet.
Indicates an item intended to provide notes assisting the understanding of the topic in question.
Memo
Introduction
REF.
Indicates an item of reference assisting the understanding of the topic in question.
Provides a description of a service mode.
Provides a description of the nature of an error indication.
Introduction
The following rules apply throughout this Service Manual:
1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with reference to the timing of operation.
In the diagrams, represents the path of mechanical drive; where a signal name accompanies the symbol , the arrow indicates the
direction of the electric signal.
The expression "turn on the power" means flipping on the power switch, closing the front door, and closing the delivery unit door, which results in
supplying the machine with power.
2. In the digital circuits, '1'is used to indicate that the voltage level of a given signal is "High", while '0' is used to indicate "Low".(The voltage value, however, differs from circuit to circuit.) In addition, the asterisk (*) as in "DRMD*" indicates that the DRMD signal goes on when '0'.
In practically all cases, the internal mechanisms of a microprocessor cannot be checked in the field. Therefore, the operations of the microprocessors
used in the machines are not discussed: they are explained in terms of from sensors to the input of the DC controller PCB and from the output of the
DC controller PCB to the loads.
The descriptions in this Service Manual are subject to change without notice for product improvement or other purposes, and major changes will be communicated in the form of Service Information bulletins.
All service persons are expected to have a good understanding of the contents of this Service Manual and all relevant Service Information bulletins and be
able to identify and isolate faults in the machine."
Contents
Contents
Chapter 1 Introduction
1.1 System Construction .................................................................................................................................. 1- 1
1.1.1 System Configuration ..............................................................................................................................................1- 1
1.2.1 Names of Parts........................................................................................................................................................1- 4
1.2.2 Using the Machine...................................................................................................................................................1- 7
1.2.2.1 Turning On the Power Switch .................................................................................................................................................. 1- 7
1.2.2.2 When Turning Off the Main Power Switch ............................................................................................................................... 1- 8
1.2.2.3 Control Panel ......................................................................................................................................................................... 1- 10
1.2.3 User Mode Items ...................................................................................................................................................1- 11
1.2.3.1 COMMON SETTINGS ........................................................................................................................................................... 1- 11
1.2.3.9 SYSTEM SETTINGS ............................................................................................................................................................. 1- 15
1.2.4 Maintenance by the User.......................................................................................................................................1- 17
1.2.4.1 User Maintenance Items ........................................................................................................................................................ 1- 17
1.2.5.1 Safety of Toner ...................................................................................................................................................................... 1- 19
1.2.5.2 Safety of the Laser Light ........................................................................................................................................................ 1- 19
1.2.5.4 Handling the Laser Unit ......................................................................................................................................................... 1- 19
1.2.5.5 Point to Note about Fire ......................................................................................................................................................... 1- 20
1.2.5.6 Cautions as to the replacement and disposal of lithium battery............................................................................................. 1- 20
1.2.7 Function List ..........................................................................................................................................................1- 23
2.1.4 Registering the Card IDs ....................................................................................................................................... 2- 12
Chapter 3 Basic Operation
3.1 Construction ............................................................................................................................................... 3- 1
3.1.4 DC Controller PCB...................................................................................................................................................3- 3
3.1.5 Analog Processor PCB ............................................................................................................................................3- 4
3.1.6 Power Supply PCB ..................................................................................................................................................3- 4
3.1.8 Control Panel PCB...................................................................................................................................................3- 4
3.1.9 NCU PCB (if equipped with fax functions) ...............................................................................................................3- 4
3.1.10 Network PCB (if equipped with network functions) ................................................................................................3- 4
3.1.11 Modular Jack PCB (if equipped with fax functions)................................................................................................3- 4
3.1.12 Modem PCB (if equipped with fax functions) .........................................................................................................3- 4
4.1 Construction ............................................................................................................................................... 4- 1
4.1.1 Specifications, Control Methods, and Functions......................................................................................................4- 1
4.1.2 Major Components...................................................................................................................................................4- 1
4.2.1 Basic Sequence at Power-on...................................................................................................................................4- 2
4.2.2 Basic Sequence after Depression of Start Key (Book mode, One Sheet of original) ..............................................4- 2
4.2.3 Basic Sequence after Depression of Start Key (ADF Mode, One Sheet of Original)...............................................4- 3
4.3 Various Control........................................................................................................................................... 4- 3
4.3.1.1 Magnification Change in Vertical Scan Direction ..................................................................................................................... 4- 3
4.3.1.2 Magnification Change in Horizontal Scan Direction ................................................................................................................. 4- 3
4.3.2 Dirt Sensor Control ..................................................................................................................................................4- 4
4.4.1.1 Removing the Copyboard Glass .............................................................................................................................................. 4- 6
4.4.1.2 Procedure after Replacing the Copyboard Glass (equipped with SEND functions) ................................................................ 4- 6
4.4.2.1 Removing the Analog Processor PCB ..................................................................................................................................... 4- 6
4.4.3 Scanner Motor .........................................................................................................................................................4- 6
4.4.3.1 Removing the Reader Motor .................................................................................................................................................... 4- 6
4.4.4.1 Removing the Contact Sensor ................................................................................................................................................. 4- 6
4.4.4.2 Procedure after Replacing the CS ........................................................................................................................................... 4- 7
4.4.5 Contact Sensor HP Sensor......................................................................................................................................4- 7
4.4.5.1 Removing the Contact Sensor Home Position Sensor ............................................................................................................ 4- 7
Chapter 5 Laser Exposure
5.1 Construction ............................................................................................................................................... 5- 1
5.1.1 Specifications and Control Mechanism....................................................................................................................5- 1
5.1.2 Main Components....................................................................................................................................................5- 2
5.2 Parts Replacement Procedure ................................................................................................................... 5- 3
5.2.1 Laser Scanner Unit ..................................................................................................................................................5- 3
5.2.1.1 Removing the Laser Scanner Unit .......................................................................................................................................... 5- 3
Chapter 6 Image Formation
6.1 Construction ............................................................................................................................................... 6- 1
6.1.1 Specifications and Control Mechanism....................................................................................................................6- 1
6.3.1.1 Removing the Developing Unit ................................................................................................................................................ 6- 4
6.3.2 Transfer Charging Roller .........................................................................................................................................6- 4
6.3.2.1 Removing the Transfer Charging Roller .................................................................................................................................. 6- 4
6.3.3 Waste Toner Full Sensor.........................................................................................................................................6- 4
6.3.3.1 Removing the Waste Toner Full Sensor .................................................................................................................................. 6- 4
Chapter 7 Pickup/Feeding System
7.1 Construction ............................................................................................................................................... 7- 1
7.3.3 Detecting the Size of Paper.....................................................................................................................................7- 3
7.4 Manual Feed Pickup Unit ...........................................................................................................................7- 4
7.4.3 Detecting the Size of Paper.....................................................................................................................................7- 4
7.5 Duplex Feeding Unit ...................................................................................................................................7- 5
7.6.1.1 Removing the Cassette Pickup Roller ..................................................................................................................................... 7- 6
7.6.2 Cassette Paper Sensor ...........................................................................................................................................7- 6
7.6.2.1 Removing the Cassette Paper Sensor..................................................................................................................................... 7- 6
7.6.6.1 Removing the Manual Pickup Solenoid ................................................................................................................................... 7- 7
7.6.7 Manual Separation Pad ...........................................................................................................................................7- 7
7.6.7.1 Removing the Manual Separation Pad .................................................................................................................................... 7- 7
7.6.13.1 Removing the Cassette Separation Roller ........................................................................................................................... 7- 11
Chapter 8 Fixing System
Contents
8.1 Construction ............................................................................................................................................... 8- 1
8.1.1 Specifications, Control Mechanisms, and Functions ...............................................................................................8- 1
8.2 Various Control Mechanisms ..................................................................................................................... 8- 2
8.2.1 Controlling the Fixing Film Temperature..................................................................................................................8- 2
8.2.1.2 Controlling the Fixing Film Temperature .................................................................................................................................. 8- 2
8.2.1.3 Target Temperatures by Mode ................................................................................................................................................ 8- 2
8.4 Parts Replacement Procedure ................................................................................................................... 8- 5
8.4.1 Fixing Unit ................................................................................................................................................................8- 5
8.4.1.1 Removing the Fixing Unit ......................................................................................................................................................... 8- 5
8.4.1.2 Installing the Fixing unit ........................................................................................................................................................... 8- 6
8.4.3.1 Removing the Fixing Film Unit ................................................................................................................................................. 8- 7
8.4.4.1 Removing the Delivery Sensor ................................................................................................................................................ 8- 8
Chapter 9 External and Controls
9.1 Control Panel.............................................................................................................................................. 9- 1
9.3 Power Supply System ................................................................................................................................ 9- 2
9.3.1 Power Supply...........................................................................................................................................................9- 2
9.3.1.2 Rated Output of the Power Supply PCB .................................................................................................................................. 9- 2
9.3.2 Protection Function ..................................................................................................................................................9- 3
9.4.2 Drive Unit .................................................................................................................................................................9- 7
9.4.2.1 Removing the Main Drive Unit ................................................................................................................................................. 9- 7
9.4.2.2 Removing the Pickup Drive Unit .............................................................................................................................................. 9- 8
9.4.2.3 Removing the Fixing/Duplex Drive Unit ................................................................................................................................... 9- 8
9.4.3 Power Supply Unit ...................................................................................................................................................9- 8
9.4.3.1 Removing the Power Supply PCB ........................................................................................................................................... 9- 8
9.4.4 Control Panel ...........................................................................................................................................................9- 8
9.4.4.1 Removing the Operation Panel Unit ........................................................................................................................................ 9- 8
9.4.5.1 Removing the Image Processor PCB ...................................................................................................................................... 9- 9
9.4.5.2 Procedure after Replacing the Image Processor PCB........................................................................................................... 9- 10
9.4.6.1 Removing the NCU PCB........................................................................................................................................................ 9- 10
9.4.7 Modular Jack PCB .................................................................................................................................................9- 10
9.4.7.1 Removing the Modular Jack PCB .......................................................................................................................................... 9- 10
9.4.12.1 Removing the Heat Discharge Fan ...................................................................................................................................... 9- 11
10.2.3 Paper Pickup Operation.......................................................................................................................................10- 4
10.4.2.1 Removing the Front Cover ................................................................................................................................................... 10- 8
10.4.2.2 Removing the Rear Cover.................................................................................................................................................... 10- 8
10.4.2.3 Detaching the Open/Close cover ......................................................................................................................................... 10- 8
10.4.2.4 Removing the Pickup Tray ................................................................................................................................................... 10- 9
10.4.3.1 Removing the Drive Unit ...................................................................................................................................................... 10- 9
10.4.4.1 Removing the Feed Frame Unit ........................................................................................................................................... 10- 9
10.4.5 ADF Motor Unit ..................................................................................................................................................10- 10
10.4.5.1 Removing the ADF Motor................................................................................................................................................... 10- 10
10.4.6.1 Removing the Pickup/Feed Roller Unit .............................................................................................................................. 10- 10
10.4.7.1 Removing the Pickup Roller ............................................................................................................................................... 10- 11
10.4.8 Original Separation Pad.....................................................................................................................................10- 11
10.4.8.1 Removing the Separation Pad ........................................................................................................................................... 10- 11
10.4.9.1 Removing the Feed Roller ................................................................................................................................................. 10- 12
10.4.10 Original Sensor ................................................................................................................................................10- 12
10.4.10.1 Removing the Document Set Sensor ............................................................................................................................... 10- 12
11.3.1 Periodeical Service Items.....................................................................................................................................11- 1
12.2.1 Procedure after Replacing the CS ......................................................................................................................12- 2
12.2.2 Procedure after Replacing the Copyboard Glass (if equipped with SEND functions) ..........................................12- 2
12.4.1.2 Preparing a Test Sheet for Adjustment ................................................................................................................................ 12- 3
12.4.2 Adjusting the Mechanical System ........................................................................................................................12- 3
12.4.2.1 Adjusting the Perpendicularity.............................................................................................................................................. 12- 3
12.4.3 Adjusting the Ellectrical System...........................................................................................................................12- 3
12.4.3.1 Adjusting the Magnification .................................................................................................................................................. 12- 3
12.4.3.2 Adjusting the Horizontal Registration ................................................................................................................................... 12- 3
12.4.3.3 Leading edge registration adjustment .................................................................................................................................. 12- 4
Chapter 13 Correcting Faulty Images
13.1 Making lnitial Checks .............................................................................................................................. 13- 1
13.1.1 Site Environment..................................................................................................................................................13- 1
13.1.2 Checking the Paper..............................................................................................................................................13- 1
13.1.3 Checking the Placement of Paper........................................................................................................................13- 1
13.1.4 Checking the Durables.........................................................................................................................................13- 1
13.1.5 Checking the Units and Functional Systems........................................................................................................13- 1
13.2.1.1 List of Clutches/Solenoids/Motors/Fans ............................................................................................................................... 13- 3
13.2.2.1 List of Sensors ..................................................................................................................................................................... 13- 4
13.2.3 Lamps, Heaters, and Others................................................................................................................................13- 5
13.2.3.1 List of Lamps, Heaters, and Others ..................................................................................................................................... 13- 5
13.2.4.1 List of PCBs ......................................................................................................................................................................... 13- 7
14.3.2 User Error Code...................................................................................................................................................14- 3
14.3.2.1 User Error Code ................................................................................................................................................................... 14- 3
14.3.3 Service Error Code ..............................................................................................................................................14- 3
14.3.3.1 Service Error Code............................................................................................................................................................... 14- 3
15.1.1 Outline of Service Mode ......................................................................................................................................15- 1
15.1.2 Using the Mode....................................................................................................................................................15- 2
15.2.1 Service Mode Menus ...........................................................................................................................................15- 2
15.3 Setting of Bit Switch (SSSW) ..................................................................................................................15- 8
15.3.2.1 List of Functions ................................................................................................................................................................... 15- 8
15.3.2.2 Detailed Discussions of Bit 0................................................................................................................................................ 15- 8
15.3.3.1 List of Functions ................................................................................................................................................................... 15- 8
15.3.3.2 Detailed Discussions of Bit 7................................................................................................................................................ 15- 8
15.3.4.1 List of Functions ................................................................................................................................................................... 15- 8
15.3.4.2 Detailed Discussions of Bit 2................................................................................................................................................ 15- 9
15.3.4.3 Detailed Discussions of Bit 3................................................................................................................................................ 15- 9
15.3.4.4 Detailed Discussions of Bit 4................................................................................................................................................ 15- 9
15.3.4.5 Detailed Discussions of Bit 6................................................................................................................................................ 15- 9
15.3.4.6 Detailed Discussions of Bit 7................................................................................................................................................ 15- 9
15.3.5.1 List of Functions ................................................................................................................................................................... 15- 9
15.3.5.2 Detailed Discussions of Bit 1................................................................................................................................................ 15- 9
15.3.5.3 Detailed Discussions of Bit 2.............................................................................................................................................. 15- 10
15.3.6.1 List of Functions ................................................................................................................................................................. 15- 10
15.3.7.1 List of Functions ................................................................................................................................................................. 15- 10
15.3.7.2 Detailed Discussions of Bit 2.............................................................................................................................................. 15- 10
15.3.8.1 List of Functions ................................................................................................................................................................. 15- 11
15.3.8.2 Detailed Discussions of Bit 2.............................................................................................................................................. 15- 11
15.3.8.3 Detailed Discussions of Bit 4.............................................................................................................................................. 15- 11
15.3.9.1 List of Functions ................................................................................................................................................................. 15- 11
15.3.9.2 Detailed Discussions of Bit 0.............................................................................................................................................. 15- 11
15.3.9.3 Detailed Discussions of Bit 1.............................................................................................................................................. 15- 11
15.3.9.4 Detailed Discussions of Bit 2.............................................................................................................................................. 15- 11
15.3.9.5 Detailed Discussions of Bit 3.............................................................................................................................................. 15- 11
15.3.9.6 Detailed Discussions of Bit 4.............................................................................................................................................. 15- 11
15.3.9.7 Detailed Discussions of Bit 5.............................................................................................................................................. 15- 11
15.3.10.1 List of Functions ............................................................................................................................................................... 15- 12
15.3.10.2 Detailed Discussions of Bit 5 ............................................................................................................................................ 15- 12
15.3.11.1 List of Functions ............................................................................................................................................................... 15- 12
15.3.11.2 Detailed Discussions of Bit 0 ............................................................................................................................................ 15- 12
15.3.11.3 Detailed Discussions of Bit 1 ............................................................................................................................................ 15- 12
15.4 Setting of Menu Switch (Menu)............................................................................................................. 15- 12
Contents
15.4.1 Menu Switch Composition..................................................................................................................................15- 12
15.4.6 <No.009 V.34 data speed upper limit>...............................................................................................................15- 13
15.4.7 <No.010 Frequency of the pseudo CI signal>....................................................................................................15- 13
15.5 Setting of Numeric Parameter (NUMERIC Param.).............................................................................. 15- 13
15.5.9 <016: time length to first response at time of fax/tel switchover> ......................................................................15- 14
15.5.10 <017: pseudo RBT signal pattern ON time length><018: pseudo RBT signal pattern OFF time length (short)><019:
pseudo RBT signal pattern OFF time length (long)> ...............................................................................................15- 14
15.5.11 <020: pseudo CI signal pattern ON time length><021: pseudo CI signal pattern OFF time length (short)><022:
pseudo CI signal pattern OFF time length (long)> ...................................................................................................15- 15
15.5.12 <023: CNG detention level for fax/tel switchover> ...........................................................................................15- 15
15.5.13 <024: pseudo RBT transmission level at time of fax/tel switchover> ...............................................................15- 15
15.5.14 <025: Answering machine connection function signal detection time> ............................................................15- 15
15.5.15 <027: V.21 low-speed flag preamble identification length> ..............................................................................15- 15
15.5.16 <056 - 061: Count type select > .......................................................................................................................15- 15
15.6 Setting of Scanner Functions (SCANNER)........................................................................................... 15- 18
15.6.2 <024:CIS scan position during ADF scanning> .................................................................................................15- 19
15.6.3 <026:Distance from the standby position of CIS to the shading start point> .....................................................15- 19
15.6.4 <031: Vertical scan start position adjustment> ..................................................................................................15- 19
15.6.5 <032: Horizontal scan start position adjustment> ..............................................................................................15- 19
15.7.2.10 <041: Target fixing temperature adjustment (cassette 1)>............................................................................................... 15- 23
15.7.2.11 <042: Target fixing temperature adjustment (cassette 2)>............................................................................................... 15- 24
15.7.2.12 <051: Target 2-sided temperature adjustment> ............................................................................................................... 15- 24
15.7.2.13 <053: Margin adjustment at the leading edge of the copy> ............................................................................................. 15- 24
15.7.2.14 <054: Margin adjustment at the trailing edge of the copy> .............................................................................................. 15- 24
15.7.2.15 <055: Margin adjustment at the right edge of the copy> .................................................................................................. 15- 24
15.7.2.16 <056: Margin adjustment at the left edge of the copy> .................................................................................................... 15- 24
15.8 Registration of Accessories (ACC) .......................................................................................................15- 25
15.10.2 System Data List..............................................................................................................................................15- 27
15.10.3 System Dump List............................................................................................................................................15- 27
15.10.5 Error Log List ...................................................................................................................................................15- 29
15.10.6 Spec List ..........................................................................................................................................................15- 31
15.10.7 Service Label ...................................................................................................................................................15- 32
15.14 Display of ROM Information (ROM) ....................................................................................................15- 33
15.14.1 ROM display ....................................................................................................................................................15- 33
15.15 Test Mode (TEST) ..............................................................................................................................15- 34
16.1.1 Overview of Upgrade ...........................................................................................................................................16- 1
16.1.2 Overview of Service Support Tool .......................................................................................................................16- 1
16.2 Making Preparations ...............................................................................................................................16- 1
16.2.1 Registering the System Software ........................................................................................................................16- 1
16.3 Downloading System Software ............................................................................................................... 16- 4
16.3.1 Downloading System ...........................................................................................................................................16- 4
16.3.3 Other Upgrade Methods.......................................................................................................................................16- 9
16.3.3.1 Downloading the PCL Software ........................................................................................................................................... 16- 9
Chapter 17 Service Tools
17.1 Service Tools .......................................................................................................................................... 17- 1
17.1.1 Special Tools........................................................................................................................................................17- 1
Chapter 1 Introduction
Contents
Contents
1.1 System Construction ......................................................................................................................................................1-1
1.1.1 System Configuration .................................................................................................................................................................. 1-1
1.2.1 Names of Parts ............................................................................................................................................................................. 1-4
1.2.2 Using the Machine ....................................................................................................................................................................... 1-7
1.2.2.1 Turning On the Power Switch .........................................................................................................................................................................1-7
1.2.2.2 When Turning Off the Main Power Switch ....................................................................................................................................................1-8
1.2.2.3 Control Panel.................................................................................................................................................................................................1-10
1.2.3 User Mode Items........................................................................................................................................................................ 1-11
1.2.3.1 COMMON SETTINGS ................................................................................................................................................................................1-11
1.2.3.4 ADDRESS BOOK SET. ...............................................................................................................................................................................1-12
1.2.3.9 SYSTEM SETTINGS ...................................................................................................................................................................................1-15
1.2.4 Maintenance by the User ........................................................................................................................................................... 1-17
1.2.4.1 User Maintenance Items ................................................................................................................................................................................1-17
1.2.5.1 Safety of Toner..............................................................................................................................................................................................1-19
1.2.5.2 Safety of the Laser Light ............................................................................................................................................................................... 1-19
1.2.5.4 Handling the Laser Unit ................................................................................................................................................................................1-19
1.2.5.5 Point to Note about Fire ................................................................................................................................................................................1-20
1.2.5.6 Cautions as to the replacement and disposal of lithium battery .................................................................................................................... 1-20
1.2.7 Function List .............................................................................................................................................................................. 1-23
1.2.7.3 Types of Paper...............................................................................................................................................................................................1-24
The machine possesses 2 power switches: main power switch and control power switch. Normally (i.e., unless the machine is in a sleep state), the machine will be
supplied with power when you turn on its main power switch.
<During printing or fax data transmission/reception>
Be sure to operate the main power switch while the Processing/Data lamp on the control panel is not lit.
(Turning off the main switch during printing or fax data transmission/reception can erase the data being processed.)
0013-1053
1-8
F-1-8
<During downloading>
Do not turn off the power switch or ON/OFF switch on the control panel.
(Turning off the main power switch during downloading can make this machine inoperative.)