456_L100_L150_L154_L170_L174_SM_EN_00LOW

87654321

Service Manual Rev.0

L100 / L150 / 154 / L170 / L174 Series

ApplicationThis manual has been issued by Canon Inc. for qualified persons to learn technical theory, installation, maintenance, and repair of products. This manual covers all localities where the products are sold. For this reason, there may be information in this manual that does not apply to your locality.

CorrectionsThis manual may contain technical inaccuracies or typographical errors due to improvements or changes in products. When changes occur in applicable products or in the contents of this manual, Canon will release technical information as the need arises. In the event of major changes in the contents of this manual over a long or short period, Canon will issue a new edition of this manual.

The following paragraph does not apply to any countries where such provisions are inconsistent with local law.

TrademarksThe product names and company names used in this manual are the registered trademarks of the individual companies.

CopyrightThis manual is copyrighted with all rights reserved. Under the copyright laws, this manual may not be copied, reproduced or translated into another language, in whole or in part, without the consent of Canon Inc.

CANON INC. 2011

CautionUse of this manual should be strictly supervised to avoid disclosure of confidential information.

Explanation of SymbolsThe following symbols are used throughout this Service Manual.

Symbols Explanation Symbols Explanation

Check. Remove the claw.

Check visually. Insert the claw.

Check the noise. Use the bundled part.

Disconnect the connector. Push the part.

Connect the connector. Plug the power cable.

Remove the cable/wire from the cable guide or wire saddle.

Turn on the power.

Set the cable/wire to the cable guide or wire saddle.

Remove the screw.

Tighten the screw.

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.

Contents0 Safety Precautions

CDRH Provisions -------------------------------------------------------------0-6Laser Safety --------------------------------------------------------------------0-6

About Laser Beams --------------------------------------------------------------- 0-6Handling Laser Scanner Unit --------------------------------------------------- 0-6

Toner Safety --------------------------------------------------------------------0-7About Toner ------------------------------------------------------------------------- 0-7Handling Adhered Toner --------------------------------------------------------- 0-7

Notes on Handling Lithium Battery ---------------------------------------0-7Notes on Assembly/Disassembly -----------------------------------------0-7

1 Product OverviewProduct Lineup -----------------------------------------------------------------1-2

Host Machine ----------------------------------------------------------------------- 1-2L100 / L170 / L174 ------------------------------------------------------------------------- 1-2L150 -------------------------------------------------------------------------------------------- 1-2L150 CHN / L150 KOR / L154 ----------------------------------------------------------- 1-2

Product Features --------------------------------------------------------------1-2Product Features ------------------------------------------------------------------- 1-2

Specifications ------------------------------------------------------------------1-3Product Specifications ------------------------------------------------------------ 1-3ADF Specifications ---------------------------------------------------------------- 1-3FAX Specifications ---------------------------------------------------------------- 1-4

Parts Name ---------------------------------------------------------------------1-4External View ----------------------------------------------------------------------- 1-4

Front side of the machine (L100 / L170 / L174) ------------------------------------- 1-4Rear side of the machine (L100 / L170 / L174) ------------------------------------- 1-5Front side of the machine (L150) ------------------------------------------------------- 1-6Rear side of the machine (L150)-------------------------------------------------------- 1-7Front side of the machine (L150 CHN / L150 KOR / L154) ---------------------- 1-7Rear side of the machine (L150 CHN / L150 KOR / L154) ---------------------- 1-8

Cross Sectional View ------------------------------------------------------------- 1-9Operation Panel (L100 / L170 / L174) ---------------------------------------- 1-9Operation Panel (L150 / L150 CHN / L150 KOR / L154) ---------------1-10

2 Technical OverviewBasic Configuration -----------------------------------------------------------2-2

Configuration function ------------------------------------------------------------ 2-2Basic Sequence -------------------------------------------------------------------- 2-2

Basic Sequence of Operation ----------------------------------------------------------- 2-2Print Sequence ------------------------------------------------------------------------------ 2-3Power-On Sequence----------------------------------------------------------------------- 2-4

Controller System -------------------------------------------------------------2-5Main Controller --------------------------------------------------------------------- 2-5

Overview -------------------------------------------------------------------------------------- 2-5Engine Controller ------------------------------------------------------------------ 2-5

General description ------------------------------------------------------------------------ 2-5Power Supply ----------------------------------------------------------------------- 2-6

Power Supply -------------------------------------------------------------------------------- 2-6Protective Functions ----------------------------------------------------------------------- 2-6

Service Tasks ----------------------------------------------------------------------- 2-7At parts replacement ----------------------------------------------------------------------- 2-7Maintenance --------------------------------------------------------------------------------- 2-7Notes on service tasks -------------------------------------------------------------------- 2-7

Original Exposure System --------------------------------------------------2-8Overview ----------------------------------------------------------------------------- 2-8Major Components ---------------------------------------------------------------- 2-8

Various Control ------------------------------------------------------------------------------ 2-8Detecting Jam ---------------------------------------------------------------------- 2-9

Jam Detection Outline --------------------------------------------------------------------- 2-9Service Tasks ----------------------------------------------------------------------- 2-9

At parts replacement ----------------------------------------------------------------------- 2-9Maintenance --------------------------------------------------------------------------------- 2-9Notes on service tasks -------------------------------------------------------------------- 2-9

Laser Exposure System --------------------------------------------------- 2-10Overview ----------------------------------------------------------------------------2-10

Overview -------------------------------------------------------------------------------------2-10Controlling the Laser Activation Timing -------------------------------------- 2-11

Laser ON/OFF Control -------------------------------------------------------------------2-11Horizontal Sync Control ------------------------------------------------------------------2-11

Laser Control -----------------------------------------------------------------------2-12Auto Power Control (APC) --------------------------------------------------------------2-12

Laser Scanner Motor Control --------------------------------------------------2-12Overview -------------------------------------------------------------------------------------2-12Scanner Motor Fault Detection ---------------------------------------------------------2-13

Service Tasks ----------------------------------------------------------------------2-13At parts replacement ----------------------------------------------------------------------2-13Maintenance --------------------------------------------------------------------------------2-13Notes on service tasks -------------------------------------------------------------------2-13

Image Formation System ------------------------------------------------- 2-14Overview/Configuration ---------------------------------------------------------2-14

Overview -------------------------------------------------------------------------------------2-14Print Process --------------------------------------------------------------------------------2-14Static Latent Image Formation Block -------------------------------------------------2-15Development Block------------------------------------------------------------------------2-15Transfer Block ------------------------------------------------------------------------------2-16Fixing Block ---------------------------------------------------------------------------------2-16Drum Cleaning Block ---------------------------------------------------------------------2-16

High-Voltage Control -------------------------------------------------------------2-17Overview -------------------------------------------------------------------------------------2-17Generating Primary Charging Bias ----------------------------------------------------2-17Generating Developing Bias ------------------------------------------------------------2-17Generating Transfer Bias ----------------------------------------------------------------2-17

Toner Cartridge --------------------------------------------------------------------2-18Toner Level Detection --------------------------------------------------------------------2-18Specification of Toner level display ----------------------------------------------------2-18Operation when toner level is Low/Nearly Out -------------------------------------2-18Toner Cartridge Absence/Presence Detection -------------------------------------2-19


Fixing System ---------------------------------------------------------------- 2-20Overview/Configuration ---------------------------------------------------------2-20

Overview -------------------------------------------------------------------------------------2-20Main Parts of Fixing assembly ---------------------------------------------------------2-20

Various Control Mechanisms --------------------------------------------------2-21Fixing Temperature Control -------------------------------------------------------------2-21Protective Functions ----------------------------------------------------------------------2-21

Other Functions -------------------------------------------------------------------2-23Throughput Down Control ---------------------------------------------------------------2-23


Pickup Feed System ------------------------------------------------------- 2-25Overview ----------------------------------------------------------------------------2-25

Overview -------------------------------------------------------------------------------------2-25Detecting Jams --------------------------------------------------------------------2-26

Jam Detection Outline --------------------------------------------------------------------2-26Delay Jam -----------------------------------------------------------------------------------2-26Stationary Jam -----------------------------------------------------------------------------2-28Other Jams ----------------------------------------------------------------------------------2-28


3 Periodical ServicesPeriodically Replaced Parts ------------------------------------------------3-2

Periodically Replaced Parts ----------------------------------------------------- 3-2Consumables ------------------------------------------------------------------3-2

Consumables ----------------------------------------------------------------------- 3-2Periodical Service -------------------------------------------------------------3-2

Scheduled Servicing -------------------------------------------------------------- 3-2Cleaning -------------------------------------------------------------------------3-2

4 Disassembly/AssemblyPREFACE -----------------------------------------------------------------------4-2

Outline -------------------------------------------------------------------------------- 4-2List Of Parts --------------------------------------------------------------------4-3

External View ----------------------------------------------------------------------- 4-3Front Side (L100/L170/L174/L250/L150 CHN/L150 KOR/L154) --------------- 4-3

Rear Side (L100/L170/L174/L250/L150 CHN/L150 KOR/L154) ---------------- 4-4Front Side (L150 EUR/L150 AUS)------------------------------------------------------ 4-4Rear Side (L150 EUR/L150 AUS) ------------------------------------------------------ 4-5Front Side (L150 CHN/L150 KOR/L154) --------------------------------------------- 4-6Rear Side (L150 CHN/L150 KOR/L154) ---------------------------------------------- 4-7

List of Main Unit -------------------------------------------------------------------- 4-7ADF Unit (L100/L170/L174/L250/L150 CHN/L150 KOR/L154) ----------------- 4-7ADF Unit (L150 EUR/L150 AUS) ------------------------------------------------------- 4-8ADF Unit (L150 CHN/L150 KOR/L154) ----------------------------------------------- 4-8Printer Unit ----------------------------------------------------------------------------------- 4-9

Electrical Components ------------------------------------------------------------ 4-9ADF Unit (L100/L170/L174/L250/L150 CHN/L150 KOR/L154) ----------------- 4-9ADF Unit (L150 EUR/L150 AUS) ------------------------------------------------------4-10Motor ------------------------------------------------------------------------------------------4-10Solenoid --------------------------------------------------------------------------------------4-11Sensor ----------------------------------------------------------------------------------------4-11Switch/Speaker -----------------------------------------------------------------------------4-12Heater/Thermistor/Thermoswitch/ -----------------------------------------------------4-12PCB -------------------------------------------------------------------------------------------4-13

List of Connectors ----------------------------------------------------------- 4-14ADF Unit ----------------------------------------------------------------------------4-14

(L100/L170/L174/L250/L150 CHN/L150 KOR/L154) -----------------------------4-14(L150 EUR/L150 AUS) -------------------------------------------------------------------4-15

Printer Unit --------------------------------------------------------------------------4-16External Cover --------------------------------------------------------------- 4-18

Layout Drawing --------------------------------------------------------------------4-18Front Side (L100/L170/L174/L250/L150 CHN/L150 KOR/L154) --------------4-18Rear Side (L100/L170/L174/L250/L150 CHN/L150 KOR/L154) ---------------4-19Front Side (L150 EUR/L150 AUS)-----------------------------------------------------4-19Rear Side (L150 EUR/L150 AUS) -----------------------------------------------------4-20Front Side (L150 CHN/L150 KOR/L154) --------------------------------------------4-21Rear Side (L150 CHN/L150 KOR/L154) ---------------------------------------------4-22

Removing the ADF Left Cover -------------------------------------------------4-23Procedure ------------------------------------------------------------------------------------4-23

Removing the ADF Right Cover -----------------------------------------------4-23Procedure ------------------------------------------------------------------------------------4-23

Removing the Handset Base Unit (L100/L170/L174/L250/L150 CHN/L150 KOR/L154) --------------------4-24

Preparation ----------------------------------------------------------------------------------4-24Procedure ------------------------------------------------------------------------------------4-24

Removing the ADF Left Upper Cover (L150 EUR/L150 AUS) ----------------------------------------------------------4-26

Procedure ------------------------------------------------------------------------------------4-26Removing the Left Cover -------------------------------------------------------4-27

Procedure ------------------------------------------------------------------------------------4-27Removing the Right Cover -----------------------------------------------------4-28

Procedure ------------------------------------------------------------------------------------4-28Removing the Front Cover Unit -----------------------------------------------4-29


Removing the Rear Cover ------------------------------------------------------4-29Preparation ----------------------------------------------------------------------------------4-29Procedure ------------------------------------------------------------------------------------4-29

Removing the Upper Cover ----------------------------------------------------4-30Preparation ----------------------------------------------------------------------------------4-30Procedure ------------------------------------------------------------------------------------4-30

Controller System ----------------------------------------------------------- 4-33Layout Drawing --------------------------------------------------------------------4-33Removing the Operation Panel Unit -----------------------------------------4-34

Procedure ------------------------------------------------------------------------------------4-34Removing the Drive Belt --------------------------------------------------------4-34


Removing the Main Motor ------------------------------------------------------4-36Preparation ----------------------------------------------------------------------------------4-36Procedure ------------------------------------------------------------------------------------4-36

Removing the Main Controller PCB ------------------------------------------4-39Before Replacing the Main Controller PCB -----------------------------------------4-39Preparation ----------------------------------------------------------------------------------4-39Procedure ------------------------------------------------------------------------------------4-39After Replacing the Main Controller PCB --------------------------------------------4-40

Removing the Engine Controller PCB ---------------------------------------4-40Preparation ----------------------------------------------------------------------------------4-40Procedure ------------------------------------------------------------------------------------4-40

Removing the Communication PCB Unit -----------------------------------4-44


Removing the NCU PCB --------------------------------------------------------4-45Preparation ----------------------------------------------------------------------------------4-45Procedure ------------------------------------------------------------------------------------4-45

Removing the Paper Leading Edge Sensor--------------------------------4-45Preparation ----------------------------------------------------------------------------------4-45Procedure ------------------------------------------------------------------------------------4-45

Removing the Fixing Delivery/Paper Width Sensor PCB ---------------4-47Preparation ----------------------------------------------------------------------------------4-47Procedure ------------------------------------------------------------------------------------4-47

Removing the Toner Sensor ---------------------------------------------------4-49Preparation ----------------------------------------------------------------------------------4-49Procedure ------------------------------------------------------------------------------------4-49

Removing the Speaker ----------------------------------------------------------4-51Preparation ----------------------------------------------------------------------------------4-51Procedure ------------------------------------------------------------------------------------4-51

Original Exposure System ------------------------------------------------ 4-52Layout Drawing --------------------------------------------------------------------4-52

(L100/L170/L174/L250/L150 CHN/L150 KOR/L154) -----------------------------4-52(L150 EUR/L150 AUS) -------------------------------------------------------------------4-53

Removing the ADF Unit ---------------------------------------------------------4-54Preparation ----------------------------------------------------------------------------------4-54Procedure ------------------------------------------------------------------------------------4-54

Removing the ADF Upper Unit (L100/L170/L174/L250/L150 CHN/L150 KOR/L154) --------------------4-56


Removing the ADF Upper Unit (L150 EUR/L150 AUS) -----------------4-58Preparation ----------------------------------------------------------------------------------4-58Procedure ------------------------------------------------------------------------------------4-58

Removing the Document Feed Tray -----------------------------------------4-61Preparation ----------------------------------------------------------------------------------4-61Procedure ------------------------------------------------------------------------------------4-61

Removing the ADF Upper Unit and ADF Lower Unit (L100/L170/L174/L250/L150 CHN/L150 KOR/L154) --------------------4-62


Removing the ADF Upper Unit and ADF Lower Unit (L150 EUR/L150 AUS) ----------------------------------------------------------4-65


Removing the CIS Unit ----------------------------------------------------------4-68Preparation ----------------------------------------------------------------------------------4-68Procedure ------------------------------------------------------------------------------------4-68

Removing the White Plate Retainer ------------------------------------------4-69Preparation ----------------------------------------------------------------------------------4-69Procedure ------------------------------------------------------------------------------------4-69

Removing the ADF Pickup Roller ---------------------------------------------4-70Preparation ----------------------------------------------------------------------------------4-70Procedure ------------------------------------------------------------------------------------4-70

Removing the ADF Feed Roller -----------------------------------------------4-72Preparation ----------------------------------------------------------------------------------4-72Procedure ------------------------------------------------------------------------------------4-72

Removing the ADF Separation Pad ------------------------------------------4-74Procedure ------------------------------------------------------------------------------------4-74

Removing the ADF Delivery Roller -------------------------------------------4-75Preparation ----------------------------------------------------------------------------------4-75Procedure ------------------------------------------------------------------------------------4-75

Laser Exposure System --------------------------------------------------- 4-77Layout Drawing --------------------------------------------------------------------4-77Removing the Laser Scanner Unit --------------------------------------------4-77


Image Formation System ------------------------------------------------- 4-79Layout Drawing --------------------------------------------------------------------4-79Removing the Transfer Roller --------------------------------------------------4-79

Procedure ------------------------------------------------------------------------------------4-79

Fixing System ---------------------------------------------------------------- 4-81Layout Drawing --------------------------------------------------------------------4-81Removing the Fixing Assembly ------------------------------------------------4-81


Pickup Feed System ------------------------------------------------------- 4-86Layout Drawing --------------------------------------------------------------------4-86

Removing the Pickup Unit ------------------------------------------------------4-86Preparation ----------------------------------------------------------------------------------4-86Procedure ------------------------------------------------------------------------------------4-86

Removing the Pickup Roller ----------------------------------------------------4-90Preparation ----------------------------------------------------------------------------------4-90

Removing the Pickup Solenoid ------------------------------------------------4-91Preparation ----------------------------------------------------------------------------------4-91Procedure ------------------------------------------------------------------------------------4-91

Removing the Separation Pad -------------------------------------------------4-93Preparation ----------------------------------------------------------------------------------4-93

5 AdjustmentElectrical Adjustment ---------------------------------------------------------5-2

Electric part-related adjustment ------------------------------------------------ 5-2When Replacing the Main Controller PCB ------------------------------------------- 5-2After Replacing the Main Controller PCB --------------------------------------------- 5-2

6 Trouble ShootingTest Print ------------------------------------------------------------------------6-2

Test Print Function ----------------------------------------------------------------- 6-2Trouble Shooting Items ------------------------------------------------------6-3

Image Faults ------------------------------------------------------------------------ 6-3Smudged/Streaked ------------------------------------------------------------------------- 6-3Repetitive image defects ruler ----------------------------------------------------------- 6-4

Mechanical Adjustment ------------------------------------------------------6-4Confirming Nip Width ------------------------------------------------------------- 6-4

Version Upgrade --------------------------------------------------------------6-5Overview ----------------------------------------------------------------------------- 6-5Preparation -------------------------------------------------------------------------- 6-5

System Requirements --------------------------------------------------------------------- 6-5Preparation ----------------------------------------------------------------------------------- 6-5

Downloading System Software ------------------------------------------------- 6-6Log Collector -------------------------------------------------------------------6-8

Overview ----------------------------------------------------------------------------- 6-8Scope of Application ----------------------------------------------------------------------- 6-8Operation Procedure----------------------------------------------------------------------- 6-8Troubleshooting ----------------------------------------------------------------------------- 6-9

7 Error CodesOverview ------------------------------------------------------------------------7-2Error Codes ---------------------------------------------------------------------7-3FAX Error Code ----------------------------------------------------------------7-4

Error Code Overview -------------------------------------------------------------- 7-4Overview -------------------------------------------------------------------------------------- 7-4

User Error Code -------------------------------------------------------------------- 7-4Error Code ------------------------------------------------------------------------------------ 7-4

Service Error Code ---------------------------------------------------------------- 7-4Error Code ------------------------------------------------------------------------------------ 7-4

8 Service ModeOverview ------------------------------------------------------------------------8-2

Entering Service Mode. ---------------------------------------------------------- 8-2Exiting Service Mode ------------------------------------------------------------- 8-2Service Mode Menu --------------------------------------------------------------- 8-2

Screen flow of Service mode ------------------------------------------------------------ 8-2

COPIER -------------------------------------------------------------------------8-3DISPLAY ----------------------------------------------------------------------------- 8-3

VERSION ------------------------------------------------------------------------------------- 8-3CCD -------------------------------------------------------------------------------------------- 8-3

I/O -------------------------------------------------------------------------------------- 8-3R-CON ----------------------------------------------------------------------------------------- 8-3

ADJUST ------------------------------------------------------------------------------ 8-3CCD -------------------------------------------------------------------------------------------- 8-3

FUNCTION -------------------------------------------------------------------------- 8-4CLEAR ---------------------------------------------------------------------------------------- 8-4MISC-R ---------------------------------------------------------------------------------------- 8-4MISC-P ---------------------------------------------------------------------------------------- 8-4SYSTEM -------------------------------------------------------------------------------------- 8-4PARAM ---------------------------------------------------------------------------------------- 8-4SPLMAN -------------------------------------------------------------------------------------- 8-5

OPTION ------------------------------------------------------------------------------ 8-5BODY ------------------------------------------------------------------------------------------ 8-5

COUNTER --------------------------------------------------------------------------- 8-6TOTAL ----------------------------------------------------------------------------------------- 8-6

PICK-UP -------------------------------------------------------------------------------------- 8-6FEEDER -------------------------------------------------------------------------------------- 8-7JAM -------------------------------------------------------------------------------------------- 8-7

FEEDER -------------------------------------------------------------------------8-8ADJUST ------------------------------------------------------------------------------ 8-8FUNCTION -------------------------------------------------------------------------- 8-8

FAX -------------------------------------------------------------------------------8-9List of SSSW ------------------------------------------------------------------------ 8-9List of MENU -----------------------------------------------------------------------8-10List of NUM ------------------------------------------------------------------------- 8-11Setting of NCU Parameters ---------------------------------------------------- 8-11

TONE/PULSE ------------------------------------------------------------------------------8-112ND DTN ------------------------------------------------------------------------------------8-12BUSTONE0 ---------------------------------------------------------------------------------8-12BUSTONE1 ---------------------------------------------------------------------------------8-12REORDRTN --------------------------------------------------------------------------------8-13MULTI -----------------------------------------------------------------------------------------8-13AUTO RX ------------------------------------------------------------------------------------8-13CNGDTCT -----------------------------------------------------------------------------------8-13SPECIALB -----------------------------------------------------------------------------------8-14SPECIALN -----------------------------------------------------------------------------------8-14RKEY -----------------------------------------------------------------------------------------8-14PBXDIALT -----------------------------------------------------------------------------------8-14PBXBUSYT ---------------------------------------------------------------------------------8-14

TESTMODE ------------------------------------------------------------------ 8-15SYSTEM ----------------------------------------------------------------------------8-15

DRAM -----------------------------------------------------------------------------------------8-15SPEAKER -----------------------------------------------------------------------------------8-15

SCAN --------------------------------------------------------------------------------8-15ADJUST --------------------------------------------------------------------------------------8-15SENSOR -------------------------------------------------------------------------------------8-15ADFTEST ------------------------------------------------------------------------------------8-15

FAX -----------------------------------------------------------------------------------8-16MODEM --------------------------------------------------------------------------------------8-16FACULTY ------------------------------------------------------------------------------------8-16

PANEL -------------------------------------------------------------------------------8-16

9 Appendix

Service Tools -------------------------------------------------------------------9-2Solvent/Oil List -----------------------------------------------------------------9-3General Circuit Diagram ------------------------------------------------------ IV

General Circuit Diagram ----------------------------------------------------------- IVSignal Input/Output List ------------------------------------------------------9-5General Timing Chart --------------------------------------------------------9-6Backup Data --------------------------------------------------------------------9-7

CDRH Provisions Laser Safety Toner Safety Notes on Handling Lithium Battery Notes on Assembly/Disassembly

Safety Precautions

L100/L150/L154/L170/L174

Series

0-11

0-11

CDRH ProvisionsFood and Drug CDRH (Center for Devices and Radiological Health) under FDA (Food and Drug Administration) enforced provisions of the section for laser and laser products on August 2, 1976. These provisions are applicable to all laser products manufactured or assembled after August 1, 1976 and allow only products certified their compliance with the provisions to market in the US. Each product shall have affixed the applicable label as shown below to follow the labeling requirements prescribed in CDRH provisions.

Note that the wording included in labels is different depending on laser product classifications.

F-0-1

Laser Safety

About Laser BeamsLaser radiation may be hazardous to human. The laser scanner unit mounted in this device is sealed in the protective housing and the external cover to prevent laser beams from leaking to the environment. As long as the device is operated under normal conditions, users are safely guarded from laser leaks.This product is certificated as a Class 1 laser product under IEC60825-1:2007.

Handling Laser Scanner UnitBefore providing service works for the laser scanner unit and its peripherals, ensure to turn off the power of the device.Any cover with potential dangers of laser beam reflection has affixed the caution label at the position shown in the figure below.

F-0-2

0-12

0-12

Toner Safety

About TonerToner is a non-toxic material composed of plastic, iron, small amount of pigment, etc.

Never throw toner in flames to avoid explosion.

Handling Adhered Toner Use dry tissue paper to wipe off toner adhered to skin or clothes and wash in water. Never use warm water for cleaning up toner to prevent toner particles from being able to

soak into fibers permanently. Toner particles are reactive with vinyl polymers. Avoid contacting these materials.

F-0-3

Notes on Handling Lithium Battery

CAUTION:

The battery installed in this machine is fixed and cannot be replaced.

When disposing of an old battery, remove it from the PCB and follow the

local regulation.

The following warnings are given to comply with Safety Principles (EN60950).

Achtung:

Wenn mit dem falschen Typ ausgewechselt, besteht Explosionsgefahr.

Gebrauchte Batterien gem der Anleitung beseitigen.

Notes on Assembly/DisassemblyFollow the items below to assemble/disassemble the device.1. Disconnect the power plug to avoid any potential dangers during assembling/disassembling

works.2. If not specially instructed, reverse the order of disassembly to reinstall.3. Ensure to use the right screw type (length, diameter, etc.) at the right position when

assembling.4. To keep electric conduction, binding screws with washers are used to attach the grounding

wire and the varistor. Ensure to use the right screw type when assembling.5. Unless it is specially needed, do not operate the device with some parts removed.6. Never remove the paint-locked screws when disassembling.

11 Product Overview

Product Overview Product Lineup Product Features Specifications Parts Name

111-2

1-2

Product Overview > Product Features > Product Features

Product Overview > Product Features > Product Features

Product Lineup

Host Machine

Model name L100 / L170 / L174 L150L150 CHN / L150 KOR

/ L154Configuration 3in1 single-sided ADF 3in1 single-sided ADF 3in1 single-sided ADF

Design

SADF Engine 1-sided Yes Yes Yes

LAN Port - - -FAX

Options L100 / L170 / L174

None

L150Handset

L150 CHN / L150 KOR / L154None

T-1-1

Product Features

Product Features1. Compact/high-speed printer

This machine is a high-speed B&W printer with a compact body design and the print speed of 19 ppm (LTR).

2. Reduced standby time and low energy consumptionThis machine uses the on-demand fixing method in which power is supplied to the heater only at printing.This realized the reduction of standby time and low energy consumption during standby.

3. Reduced operation noise and stabilized image qualityThis machine uses the belt drive method for the Main Motor's drive transmission.The operation noise is reduced and image quality is stabilized compared to the conventional gear drive method (see NOTE).

4. Improved user operabilityUser operability is improved by concentrating the maintenance processes (jam removal and cartridge replacement) in a single location at the Upper Cover.

Note:By changing the drive method from gear to belt, uneven cycle of the Photosensitive Drum is reduced. This makes it possible to realize stabilized image quality.

111-3

1-3

Product Overview > Specifications > ADF Specifications

Product Overview > Specifications > ADF Specifications

Specifications

Product Specifications

Copyboard Stream readingMachine installation method DesktopLight source LEDImage reading method CIS Photosensitive medium OPC Drum (24 mm )Exposure method Laser beam (semiconductor laser)Charging method Roller charging methodDeveloping method Jumping development methodTransfer method Roller transfer methodSeparation method Curvature separationPaper feed method Pickup Tray : Pad separation method

Multi-purpose Tray : NoneDelivery method Face-downDrum cleaning method Blade cleaningFixing method On-demand methodToner supplying method Toner Cartridge replacementToner level detection YesDocument type SheetMaximum document size 216 mm356 mmMagnification ratio 100 % magnification

50 to 200 % (in increments of 1 %)Resolution at reading 600 dpi 600 dpi

600 dpi x 196 dpi/600 dpi x 392 dpi (At the time of FAX)Print resolution 600 dpi x 400 dpi/600 dpi x 600 dpi *Warm-up time Minimum (without Toner Cartridge replacement): 14 sec. or less /

When a new Toner Cartridge is installed: 42 sec. or lessFirst print time 7.7 sec. or less (LTR, default setting)First copy time 21.3 sec. or less (LTR, default setting)Print speed 18 ppm mode setting:19 ppm (LTR)

12 ppm mode setting: 12.4ppm(LTR)Copy speed 12.4 ppm (LTR) **Paper size Fixed size:

A4, B5, A5, LGL, LTR, Statement, Executive, Officio, B-officio, M-officio, Government-Letter, Government-Legal, Foolscap, A-foolscap, Envelope COM10, Envelope C5, Envelope B5, Envelope DLCustom size:Width: 76.2 to 216 mm, Length: 127 to 356 mm

Paper types Plain paper (60 to 89 g/m2), Heavy paper (90 to 163 g/m2), Rough paper (60 to 163 g/m2), Transparency, Label, Envelope

Pickup Tray capacity Approx. 150 sheets (plain paper: 60 to 80 g/m2)

Delivery Tray capacity Approx. 60 sheets (plain paper: 60 to 80 g/m2)Environment temperature range 10 to 30 degrees CentigradeEnvironment humidity range 20 to 80 %Duplex method NoneHost Interface Standard: USB/Hi-speed USB, Options: NoneHard disk capacity Standard: None, Options: NoneMemory capacity Standard: 64 MB, Options: NonePower supply AC110 to 127 V +/- 10 %, ( 50,60 Hz +/- 2 Hz)

AC220 to 240 V +/- 10 %, ( 50,60 Hz +/- 2 Hz)Maximum power consumption 900 W or less (120 V), 1020 W or less (230 V)Power consumption 410 W or less (120 V), 400 W or less (230 V)External dimensions (W x D xH) 372 276 254 mmWeight L100 / L170 / L174

Approx. 8.24 kg (including Toner Cartridge)L150Approx. 8.0 kg (including Toner Cartridge)L150 CHN / L150 KOR / L154Approx. 8.2 kg (including Toner Cartridge)

*: Resolution switchingWith this machine, 2 types of resolution can be switched by setting "Copy Type" on the printer driver.

Speed priority (at the time of shipment): 600 dpi 400 dpiResolution priority: 600 dpi 600 dpi

**: Copy : 600 dpi x 600 dpi only

ADF Specifications

Document Exposure LEDDocument Scan document stream reading by fixed contact image sensor (CIS)Scanning Resolution 600 dpi (horizontal scanner) X 600 dpi (vertical scanner) Number Of Gradations 256Magnification 50 % to 200 % (1 % increment)

horizontal : image processing by Main Controller PCBvertical : image processing by Main Controller PCB

Lens CIS/ColorCIS Unit number of lines: 1 line

number of pixels: 5148 pixels as total pixels (5107 pixels as effective pixels)maximum document scanning width: 216 mm

Documentdrive control CIS is fixed, and does not execute drive control.Document is moved by the DF Motor, which is controlled by the Main Controller PCB.

Document size detection None

T-1-2

T-1-3

111-4

1-4

Product Overview > Parts Name > External View > Front side of the machine (L100 / L170 / L174)

Product Overview > Parts Name > External View > Front side of the machine (L100 / L170 / L174)

FAX Specifications

Suitable Line Public Switched Telephone Network (PSTN)*1Communication Protocol Super G3Modem speed 33.6 KbpsData compression method MH, MR, MMR Transmission Speed Approx. 3 sec. per page*2

(ECM-MMR, sent from memory at 33.6 Kbps)Send/receive memory L100 / L150 / L170 / L174

Transmission: 10 jobs / Reception: 30 jobs(Total number of sent/received pages: approx. 512 pages *2)

L150 CHN / L150 KOR / L154Transmission: 10 jobs / Reception: 30 jobs(Total number of sent/received pages: approx. 346 pages *2)

Fax Resorution (Normal) : 200dpi x 100 dpi(Fine) : 200dpi x 200 dpi(Photo) : 200dpi x 200 dpi(Super fine) : 200dpi x 400 dpi

Dial method L100 / L170 / L174One-touch dial : 30L150 / L150 CHN / L150 KOR / L154One-touch dial : 15Abbreviation dial : 100Group dial : 129Address book dialNormal dial : entry by numeric keypadAuto redialManual redialConcurrent transmission : 140

Reception method Auto receptionRemote reception by a telephone (initial setting ID: 25)

Report output TX ReportCommunication Management Report(to be output automatically for every 40 communications)RX Report

Number Display Not supported

*1The Public Switched Telephone Network (PSTN) currently supports 28.8 Kbps modemspeed or lower. Note that speeds can vary depending on the telephone line conditions.*2Based on ITU-T (ITU Telecommunication Standardization Sector) Standard Chart No. 1,MMR standard mode.

T-1-4

Parts Name

External View

Front side of the machine (L100 / L170 / L174)

[6]

[7][9]

[8]

[4]

[5]

[3]

[2]

[1]

[12]

[11]

[10]

[13]

[14][15]

[17][18][19][20]

[21]

[22]

[23]

[24]

[16]

F-1-1

111-5

1-5

Product Overview > Parts Name > External View > Rear side of the machine (L100 / L170 / L174)

Product Overview > Parts Name > External View > Rear side of the machine (L100 / L170 / L174)

No. Name No. Name[1] Document Pickup Tray [13] Handset[2] Document Feed Tray [14] Onetouch Cover[3] ADF Right Cover [15] Operation Panel Unit[4] ADF Upper Cover [16] ADF Lower Cover[5] ADF Upper Unit Lower Cover [17] Pickup Tray Paper Guides[6] Right Cover [18] Pickup Tray[7] Delivery Auxiliary Tray [19] Pickup Tray Trailing Edge Paper [8] Delivery Stopper [20] Small Size Paper Guides[9] Dust Cover [21] Power Button

[10] Document Return Tray [22] Front Cover Unit[11] Document Stopper [23] Delivery Tray[12] Handset Base [24] Upper Cover

Rear side of the machine (L100 / L170 / L174)

[1]

[2]

[5]

[6]

[7][8]

[9]

[3]

[4]

No. Name No. Name[1] Document Guides [6] Power Supply Socket[2] ADF Left Cover [7] External Device Jack[3] USB Port [8] Telephon Line Jack[4] Handset Jack [9] Rear Cover[5] Left Cover

F-1-2

111-6

1-6

Product Overview > Parts Name > External View > Front side of the machine (L150)

Product Overview > Parts Name > External View > Front side of the machine (L150)

Front side of the machine (L150)

[7][9]

[8]

[12]

[13]

[15][16][17][18]

[19]

[20]

[21]

[22]

[6]

[4]

[5]

[3]

[2]

[1]

[14]

[11]

[10]

F-1-3

No. Name No. Name[1] Document Pickup Tray [13] Operation Panel Unit[2] Document Feed Tray [14] ADF Lower Cover[3] ADF Right Cover [15] Pickup Tray Paper Guides[4] ADF Upper Cover [16] Pickup Tray[5] ADF Upper Unit Lower Cover [17] Pickup Tray Trailing Edge Paper [6] Right Cover [18] Small Size Paper Guides[7] Delivery Auxiliary Tray [19] Power Button[8] Delivery Stopper [20] Front Cover Unit[9] Dust Cover [21] Delivery Tray

[10] Document Return Tray [22] Upper Cover[11] Document Stopper[12] ADF Left Upper Cover

111-7

1-7

Product Overview > Parts Name > External View > Front side of the machine (L150 CHN / L150 KOR / L154)

Product Overview > Parts Name > External View > Front side of the machine (L150 CHN / L150 KOR / L154)

Rear side of the machine (L150)

[1]

[2]

[3]

[4]

[5]

[7] [6][8]

[9]

No. Name No. Name[1] Document Guides [6] Handset Jack[2] ADF Left Cover [7] External Device Jack[3] USB Port [8] Telephon Line Jack[4] Left Cover [9] Rear Cover[5] Power Supply Socket

F-1-4

Front side of the machine (L150 CHN / L150 KOR / L154)

[7][9]

[8]

[12]

[11]

[10]

[13]

[14]

[16][17][18][19]

[20]

[21]

[22]

[23]

[6]

[4]

[5]

[3]

[2]

[1]

[15]

F-1-5

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Product Overview > Parts Name > External View > Rear side of the machine (L150 CHN / L150 KOR / L154)

Product Overview > Parts Name > External View > Rear side of the machine (L150 CHN / L150 KOR / L154)

No. Name No. Name[1] Document Pickup Tray [13] Handset[2] Document Feed Tray [14] Operation Panel Unit[3] ADF Right Cover [15] ADF Lower Cover[4] ADF Upper Cover [16] Pickup Tray Paper Guides[5] ADF Upper Unit Lower Cover [17] Pickup Tray[6] Right Cover [18] Pickup Tray Trailing Edge Paper [7] Delivery Auxiliary Tray [19] Small Size Paper Guides[8] Delivery Stopper [20] Power Button[9] Dust Cover [21] Front Cover Unit

[10] Document Return Tray [22] Delivery Tray[11] Document Stopper [23] Upper Cover[12] Handset Base

Rear side of the machine (L150 CHN / L150 KOR / L154)

[1]

[2]

[5]

[6]

[7][8]

[9]

[3]

[4]

No. Name No. Name[1] Document Guides [6] Power Supply Socket[2] ADF Left Cover [7] External Device Jack[3] USB Port [8] Telephon Line Jack[4] Handset Jack [9] Rear Cover[5] Left Cover

F-1-6

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1-9

Product Overview > Parts Name > Operation Panel (L100 / L170 / L174)

Product Overview > Parts Name > Operation Panel (L100 / L170 / L174)

Cross Sectional View

[1] [2] [3] [4] [5]

[6]

[7][8][9]

[10]

[11]

[12]

[13]

[14]

[15]

No. Name No. Name[1] ADF Pickup Roller [9] Feed Roller[2] ADF Separation Pad [10] Photosensitive Drum[3] ADF Feed Roller [11] Transfer Roller[4] CIS Unit [12] Fixing Film Unit[5] ADF Delivery Roller [13] Fixing Pressure Roller[6] Laser Scanner Unit [14] Fixing Assembly[7] Pickup Roller [15] Delivery Roller[8] Separation Pad

F-1-7

Operation Panel (L100 / L170 / L174)

[2] [3][1] [4] [5] [6]

[7][8][10][11]

[12]

[9]

[13]

No. Name Function[1] [Redial] key Calls up the destination of last transmission. (This is enabled

only when the fax basic screen is displayed.)[2] [Address Book] key Searches the destination registered to One-Touch Dial and

Coded Dial by name.[3] [Coded Dial] key Specifies the destination registered to the Coded Dial.[4] [FAX/COPY] key Switches the mode between copy and fax.[5] LCD Displays a message or operation status. Displays menu,

selected item, texts, numbers and other information when changing settings.

[6] [Menu] key Registers various settings.[Paper Settings] key Specifies the paper size and type to place in the pickup tray.[Report] key Prints a report and list. Also allows to set whether to

automatically print a report.[Clear] key Deletes a text or number.[Energy Saver] key/lamp Manually sets and cancels energy saver mode.Lights up in

green when in the energy saver mode.Numeric keys ([0]-[9]) Enters a text or number.[*] key Switches the text entry mode. Use to send the tone signal from

the dial line when sending fax.[#] key Use to enter a signal.[Stop] key Stops the job.[Start] key/lamp Starts copy or fax operation.Lights up in green when a copy or

fax operation is in starting state.

F-1-8

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1-10

Product Overview > Parts Name > Operation Panel (L150 / L150 CHN / L150 KOR / L154)


No. Name Function[7] [Status Monitor/Cancel]

keyConfirms and cancels a job. Also allows monitoring of this product's status.

[Back] key Returns to the screen one layer before.[] Key Selects the upper setting item or increases a setting value.[] Key Selects the lower setting item or decreases a setting value.[] Key Returns to the screen one layer before. Or moves the cursor

to the left. Press to lower the volume level when the fax tone is playing.

[] Key Proceeds to the screen one layer after. Or moves the cursor to the right. Press to raise the volume level when the fax tone is playing.

[OK] key Determines settings and registered data.[Reset] key Resets settings.

[8] [Processing/Data] lamp Blinks in green when this product is running. Lights up in green when a job is waiting.

[Error] lamp Blinks in orange when an error occurs. Or lights up in orange instead.

[9] [Hook] key Push to dial with the telephone receiver of the external phone on the hook.

[10] [Pause] key Inserts a pause in the fax number.[11] [One-touch Speed Dial]

keysSpecifies the destination registered to the One-Touch Dial 1-30..[12]

[13] Onetouch Cover By opening the Onetouch Cover, one-touch dials 16 to 30 are enabled.

T-1-5

Operation Panel (L150 / L150 CHN / L150 KOR / L154)

[2] [3][1] [4] [5] [6]

[7][8][10][11] [9]

No. Name Function[1] [Redial] key Calls up the destination of last transmission. (This is enabled

only when the fax basic screen is displayed.)[2] [Address Book] key Searches the destination registered to One-Touch Dial and

Coded Dial by name.[3] [Coded Dial] key Specifies the destination registered to the Coded Dial.[4] [FAX/COPY] key Switches the mode between copy and fax.[5] LCD Displays a message or operation status. Displays menu,

selected item, texts, numbers and other information when changing settings.

[6] [Menu] key Registers various settings.[Paper Settings] key Specifies the paper size and type to place in the pickup tray.[Report] key Prints a report and list. Also allows to set whether to

automatically print a report.[Clear] key Deletes a text or number.[Energy Saver] key/lamp Manually sets and cancels energy saver mode.Lights up in

green when in the energy saver mode.Numeric keys ([0]-[9]) Enters a text or number.[*] key Switches the text entry mode. Use to send the tone signal from

the dial line when sending fax.[#] key Use to enter a signal.[Stop] key Stops the job.[Start] key/lamp Starts copy or fax operation.Lights up in green when a copy or

fax operation is in starting state.

F-1-9

111-11

1-11



No. Name Function[7] [Status Monitor/Cancel]

keyConfirms and cancels a job. Also allows monitoring of this product's status.

[Back] key Returns to the screen one layer before.[] Key Selects the upper setting item or increases a setting value.[] Key Selects the lower setting item or decreases a setting value.[] Key Returns to the screen one layer before. Or moves the cursor

to the left. Press to lower the volume level when the fax tone is playing.

[] Key Proceeds to the screen one layer after. Or moves the cursor to the right. Press to raise the volume level when the fax tone is playing.

[OK] key Determines settings and registered data.[Reset] key Resets settings.

[8] [Processing/Data] lamp Blinks in green when this product is running. Lights up in green when a job is waiting.

[Error] lamp Blinks in orange when an error occurs. Or lights up in orange instead.

[9] [Hook] key Push to dial with the telephone receiver of the external phone on the hook.

[10] [Pause] key Inserts a pause in the fax number.[11] [One-touch Speed Dial]

keysSpecifies the destination registered to the One-Touch Dial 1-15..

T-1-6

22 Technical Overview

Technical Overview Basic Configuration Controller System Original Exposure System Laser Exposure System Image Formation System Fixing System Pickup Feed System

222-2

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Technical Overview > Basic Configuration > Basic Sequence > Basic Sequence of Operation

Technical Overview > Basic Configuration > Basic Sequence > Basic Sequence of Operation

Basic Configuration

Configuration functionThe machine may be broadly divided into the following 6 functional blocks: control system,original exposure system, laser exposure system, image formation system, pickup feed system and fixing system.

Original exposure system

External device

Control system

Laser exposure system

Pickup feed system

Image formation system

Fixing system

Maincontroler

Enginecontroler

Powersupply

F-2-1

Basic Sequence

Basic Sequence of OperationThe engine controller controls the operation sequence. The following table provides an outline of machine operation occurring from when the power switch is turned on to when printing ends and Main Motor (M1) stop, indicating the purposes of intervals and engine operation.

Interval Purpose RemarksWAIT(Wait)

From power-ON until initial drive for Main Motor (M1) is completed.

To clear potential from the drum surface and to clean the transfer roller.Also to bring the heater temperature up to the targeted temperature.

Detect whether the Toner cartridge is installed or not.

STBY(Standby)

From the end of the WAIT period or the LSTR period until the print command is sent from the main controller. Or, from the end of the LSTR period until power switch is turned OFF.

To keep the printer ready to print.

INTR(initialrotation)

From the input of the print command from the main controller until the Pickup Solenoid (SL1) is turned ON.

To stabilize the photosensitive drum sensitivity in preparation for printing. Also to clean the transfer roller.

PRINT(print)

From the end of the INTR period until the Paper Leading Edge Sensor (PS751) detects the trailing edge of paper.

To form image on the photosensitive drum based on the VIDEO (/VDO, VDO) signals input from the main controller, and to transfer the toner image onto paper.

LSTR(last rotation)

From the end of PRINT period until the Main Motor (M1) stops.

To deliver the last paper completely out of the printer.

Return to the INTR period as soon as another print command is sent from the main controller.

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2-3

Technical Overview > Basic Configuration > Basic Sequence > Print Sequence

Technical Overview > Basic Configuration > Basic Sequence > Print Sequence

Print Sequence

Fixing heater

CIS Unit

Document Feed Motor (M3)

Sequence WAIT

Power-on Start KEY

0.9 0.1

0.3

0.1

Max.1.5

2.4

0.5

0.5

0.06 0.06

0.9

2.0

2.0

Forcible emissionForcible emissionMasking emission Masking emission Masking emission

1.3Print temperature control

Print command Print commandWaiting for a print command

0.5

1.1

0.1

0.8

Max.4.1 1.1

Cleaning bias Cleaning bias Print bias Cleaning bias

BD emission/Forcible emission

Controls at 80 C

Relay

1

Print command

Scanner motor (M2)

Laser diode

Main motor (M1)

Pickup solenoid (SL1)

Leading edge sensor (PS751)

Fixing delivery sensor (PS701)

Primary charging bias (DC)

Developing bias (AC)

Developing bias (DC)

Transfer bias

STBY INTR PRINT LSTR STBY(Unit:Seconds)

2

3

4

5

6

7

8

9

10

11

12

13

14

15

F-2-2

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Technical Overview > Basic Configuration > Basic Sequence > Power-On Sequence

Technical Overview > Basic Configuration > Basic Sequence > Power-On Sequence

Power-On SequenceThe sequences from the power-ON to the STBY period are described below.1) Power-ON.2) CPU initialization.3) Video interface communication start.4) Residual paper check.

Detecting paper presence by each sensor signaling.5) Initial drive for Main Motor (M1).6) Initial drive for Fixing Heater (H1).

Controlling fixing temperature targeting for 120 deg C.7) Initial drive of the Scanner Motor (M2).8) High-voltage control.

Detect cartridge presence after primary charging AC bias is applied.Cleaning transfer roller.

9) Failure/Abnormality check.Detecting fixing unit failure and door open during above periods.

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2-5

Technical Overview > Controller System > Engine Controller > General description

Technical Overview > Controller System > Engine Controller > General description

Controller System

Main Controller

OverviewThe Main Controller receives print information from the Reader and external equipment (computer, etc.). Video data is created from the received print information, and is sent to the Engine Controller.There are 2 types of print information from the external equipment: engine command data to exchange the status or unique information of a printer and dot data for printing.In the case of receiving dot data, video data is created and is sent to the Engine Controller.In the case of receiving engine command data, printer status is returned to the external equipment after communicating with the Engine Controller.

EXTERNAL DEVICE

USBINTERFACE

CONTROL PANELENGINE

CONTROLLER

DRAMMAIN CONTROLLER

Flash ROM

READER

CONVERTERANALOG TO DIGITAL

MOTOR DRIVERDC/DC CONVERTER CPU

ASIC

FAX MODEM NCU

EXTHANDSET

TEL

FAX LINE

F-2-3

Engine Controller

General descriptionEngine controller is the circuit to control the operation sequence of the host machine and it is controlled by the CPU inside the engine controller.When the Power Switch (SW1100) is turned ON and DC power is supplied through the low voltage power inside engine controller, CPU starts the printer operation control.Then, CPU drives the loads such as laser diode, motors and solenoids etc. according to the image data that is input by the main controller when status becomes stand-by mode.The following is the block diagram of this circuit.

AC input

Fixing assembly

MotorM

Transfer rollerHigh-voltagepower supply

Low-voltagepower supply

Laser scannerunit

Solenoid

Main controller

Toner Cartridge

SensorCPU

Switch

Engine controller

Fixing control

F-2-4

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2-6

Technical Overview > Controller System > Power Supply > Protective Functions

Technical Overview > Controller System > Power Supply > Protective Functions

Power Supply

Power Supply

5.5V

3.3V

24V

3.3V

5.5V

5.5V

3.3V

Main Controller PCB

CIS Unit

Control Panel Unit

5.5V

3.3V

1.0V

24V

DC/DC Converter

24V

3.3V

Engine Controller PCB

5V Generating

Circuit

Protection Circuit

Motor Driver PCB

Laser Scanner Unit

Fixing Assembly

Pickup Solenoid(SL1)

24V

Power Supply

Assembly

24V

Main Motor(M1)

24V

DF Motor(M3)

3.3V

SW1100

FU101 FU201

FU202 FU203

F-2-5

Protective Functions

Power protective functionLow voltage power circuit carries the overcurrent preventive function against and overvoltage preventive function that block the voltage output automatically to prevent the power circuit brokerage when the overcurrent or overvoltage occur due to load errors such as short circuit etc.Thus, when the DC power cannot be output from the low voltage circuit, the protective function against overcurrent or overvoltage may be working. Turn OFF the Power Switch (SW1100) to fix load errors and turn ON the Power Switch (SW1100) again (see CAUTION).Also the circuit carries the 4 fuses (FU101, FU201, FU202, FU203) as another preventive function. The fuses blow to block the power supply when overcurrent occurs in AC line.

CAUTION:

When restoring the low voltage power after protective function is activated, leave it for 2 minutes or more from turning off the Power Switch (SW1100) or plugging out before turning ON.

Safety functionThe host machine equips the function of stopping 24V in part of the high voltage power unit to avoid users and engineers from getting burned or electric shock.When the cartridge door is opened, the Door Switch (SW501) is turned off and 24V supplied to the high voltage power unit is shut.Engine controller CPU determines the door open when the Door Switch (SW501) is turned OFF.

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Technical Overview > Controller System > Service Tasks > Notes on service tasks

Technical Overview > Controller System > Service Tasks > Notes on service tasks

Service Tasks

At parts replacement

When Replacing the Main Controller PCBThe Main Controller PCB stores data shown in the Backup Data List.When replacing the Main Controller PCB, it is necessary to back up data in advance and install it after replacing the PCB.

Before Replacing the Main Controller PCB Check the version.

Service mode > COPIER > DISPLAY > VERSION Output the system data on a piece of paper as needed.

Service mode> COPIER > FUNCTION > MISC-P > OUTPUT >SYS-DAT Export address book data to the PC (backup of address book data)

After Replacing the Main Controller PCB Check the version.

Service mode > COPIER > DISPLAY > VERSIONWhen the version differs, execute upgrading.

Set country group.Service mode > COPIER > OPTION > BODY > LOCALE

Clear the data to enable the country group.Service mode> COPIER > FUNCTION > CLEAR > ALLThe machine will be automatically restartedIf USA, EUROPE, ASIA, or OCEANIA is selected as the country group, make selections for Language and Select Country/Region when the machine is restarted.The options available for Language and Select Country/Region are shown in the following list

Country group Language Select ountry/RegionUSA English,French,Portuguese,Spanish United States(US),Canada(CA),

Brazil(BR),Mexico(MX),Other

Country group Language Select ountry/RegionEUROPE Bulgarian,Croatian,Czech,Danish,

Dutch,English,Estonian,Finnish,French,German,Grrek,Hangarian,Italian,Norwegian,Polish,Portuguese, Romanian,Russian,Slovak,Slovene, Spanish,Swedish,Turkish

Austria (AT),Belarus (BY),Belgium (BE),Czech Republic (CZ),Denmark (DK),Egypt (EG),Finland (FI),France (FR),Germany (DE),Greece (GR),Hungary (HU),Ieland (IE),Italy (IT),Jodan (JO),Luxembourg (LU),Netherland (NL),Norway (NO),Poland (PL),Portugal (PT),Russia (RU),Saudi Arabia (SA),Slovenia (SI),South Africa (ZA),Spain (ES),Sweden (SE),Switzerland (CH),Ukraina (UA),Great Britain (GB),Other

ASIA Chinese (Simplified)Chinese (Traditional),English,Frranch,Japanese,Korean,Portuguese,Spanish,Thai,Vietnamese

Hongkong (HK),Singapore (SG),Malaysia (MY),Vetnam (VN),Argentina (AR),Other (Asia),Other (Latin America)

OCEANIA Chinese (Simplified)Chinese (Traditional),English,Frranch,Japanese,Korean,Portuguese,Spanish,Thai,Vietnamese

Australia (AU),New Zealand (NZ),Other

Make settings of system data as needed. Import address book data from the PC (installation of address book data)

MaintenanceNo periodically replaced parts, durable parts or periodical service is set for this product.

Notes on service tasksNone.

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Technical Overview > Original Exposure System > Major Components > Various Control

Technical Overview > Original Exposure System > Major Components > Various Control

Original Exposure System

Overview

item function / methoddocument exposure LEDdocument scan Document stream reading by fixed CIS Unitscanning resolution 600 dpi x 600 dpi (Horizontal x Vertical)number of gradations 256 gradationsmagnification 50 % to 200 % (1 % increment)

Horizontal: image processing by Main Controller PCBVertical: image processing by Main Controller PCB

lens CIS / ColorCIS Unit Number of lines: 1 line

Number of pixels: 5148 pixels as total pixels (5104 pixels as effective pixels)Maximum document scanning width: 216 mm

CIS Unit drive control Drive control by document feeder motor (M3)Document size detection None

The Single-side Auto Document Feeder (SADF) mounted onto this host machine is dedicated to stream-reading. 1 motor (Document Feed Motor : M3) is engaged in pickup/feeding/delivery. At the start of copy/fax/scan, the Document Feed Motor is driven by the drive command from the Main controller to pickup/feed the originals set face down on the original tray one by one in order from the bottom. Image is read when the original passes over the Contact Sensor (CIS). Then, the original is delivered face-down to the Delivery Assembly of the original.

T-2-3

Major ComponentsMain components of the original exposure system are shown below. CIS Unit for reading the original Original Feed Motor (M3), Pickup Roller, Feed Roller and Delivery Roller for feeding the

original

Based on the drive signals from the Main Controller PCB, image reading control moves the original by rotating the Original Feed Motor (M3) so that the original is read by the CIS Unit.

J21234B0/B0

A0/A0

Main Controller PCBM3

Various Control

Original DetectionThere are two types of original detection in this equipment.1,Original Presence / Absence Detection

Detected by DS (Document Sensor)Setting the original onto the original tray pushes up the actuator, activating (light shielded =>light transmitted) the DS, and resulting in detection of the presence of original.

2,Detection of the End of the OriginalDetected by the DES (Document End Sensor)The leading edge of the original that is fed pushes up the actuator, activating the DES (light shielded =>light transmitted) and resulting in detection of the reach of the leading edge of original. Furthermore, when the trailing edge of the original passes the actuator position, the actuator returns to the original position, inactivating the DES (light transmitted => light shielded). The trailing edge of the original is detected by this mechanism. The original length that can be scanned with this equipment is less than 400 mm. Passing of the original longer than this results in jam stop. The original length is calculated by the time it takes from detection of the leading edge of the original to detection of the trailing edge of the original.

F-2-6

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Technical Overview > Original Exposure System > Service Tasks > Notes on service tasks

Technical Overview > Original Exposure System > Service Tasks > Notes on service tasks

J21234B0/B0

A0/A0

Main Controller PCBM3

Detecting Jam

Jam Detection Outline

OutlineThe following cases are judged as ADF jam.1. In case of delay in reaching DS/DES or stationary during scanning of original2. In case DS/DES is detected as ON at power-on (residual paper jam)3. In case of detecting original of which length is 400 mm or longer Operation after Detection of Jam

The host machine stops scanning operation and displays "CHECK DOCUMENT" on the control panel. No jam code is displayed. In case of the model equipped with fax function (with built-in speaker), the warning beep occurs at the detection of jam.

How to release JamRemove the jammed paper and open / close the ADF upper cover.

F-2-7

Service Tasks

At parts replacementNo task is required for this product at parts replacement.



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Technical Overview > Laser Exposure System > Overview > Overview

Technical Overview > Laser Exposure System > Overview > Overview

Laser Exposure System

Overview

OverviewThe laser exposure system forms static latent images on the photosensitive drum according to the VIDEO signals sent from the main controller, and is comprised of the laser driver and scanner motor, etc. These are controlled by the engine controller. The following is the outline.

Laser unit

Scanner Motor (M2)Four-faced mirror

Cylindrical lens

Photosensitive drum

Engine Controller

BD

INP

UT

sign

al

VID

EO

sig

nal

LAS

ER

CO

NTR

OL

sign

al

SC

AN

NE

R M

OTO

R

SP

EE

D C

ON

TRO

L si

gnal

Main controller

Focus lens

BD sensor

Collimator lens

F-2-8

The operational sequence of the laser scanner unit is described below.

1) When the Main controller sends print instruction command, the Engine controller rotates the Four-faced mirror, causing the Scanner Motor (M2) to rotate.

2) When the Scanner Motor (M2) starts to rotate, the Engine controller emits the laser forcibly using the Laser control signal, causing the Engine controller to start rotation control for the Scanner Motor (M2).

3) The Engine controller controls to keep a constant speed of rotation of the Scanner Motor (M2) using the Scanner motor speed control signal.

4) After the rotation speed of the Scanner motor reaches its target, the Main controller sends VIDEO signals to the Laser driver PCB.

5) The Laser driver emits laser diode according to these signals.

6) The laser beam passes through the collimator lens and the cylindrical lens and enters the Four-faced mirror rotating at a constant speed.

7) The laser beam reflected by the Four-faced mirror is focused on the Photosensitive drum via the image-forming lens at the front of the Four-faced mirror.

8) When the Four-faced mirror rotates at a constant speed, the laser beam on the Photosensitive drum is scanned on the Photosensitive drum at a constant speed.

9) When the Photosensitive drum rotates at a constant speed and the laser beam is scanned on the Photosensitive drum at a constant speed, latent images are formed on the Photosensitive drum.

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Technical Overview > Laser Exposure System > Controlling the Laser Activation Timing > Horizontal Sync Control

Technical Overview > Laser Exposure System > Controlling the Laser Activation Timing > Horizontal Sync Control

Controlling the Laser Activation Timing

Laser ON/OFF ControlIn this control, the laser driver turns on/off the laser diode (LD) according to the laser control signal sent from the engine controller.The following is the circuit diagram of the laser control.

Engine Controller

Main Controller

Laser driver PCB

Laser driver IC

BD Sensor

LDPD

C1

CNT1

CNT0

VOD

/VOD

Sample holdcircuit

Drivecircuit

Comparator

Logic PCB

/BD

+3.3V

/BDI

F-2-9

The engine controller sends the laser control signals (CNT0, CNT1) for changing the operation mode of the laser to the logic circuit in the laser driver IC, as well as the video signals (VDO, /VDO) for image formation.The laser driver IC executes laser control according to the combination of the CNT0, CNT1 signals.The following is the combination of the laser control signal (CNT0, CNT1).

Operation mode CNT0 CNT1 RemarksDischarge L L The capacitor (C1) is discharged.Data output H H At normal printAPC H L At using APCForced OFF L H At using image mask

Horizontal Sync ControlThis is the control to adjust the writing position in the image horizontal direction.The following is the details of control procedure.

1) The engine controller controls the laser control signal during unblanking (*) to emit the laser diode (LD) forcibly.

2) The BD PCB exists on the scanning route of the laser beam, which is sent to the BD PCB.

3) The BD PCB detects this laser beam, creates BD input signal (/BDI) and sends it to the engine controller.

4) The engine controller creates horizontal sync signals (/BD) based on /BDI signal and sends the /BD signal to the main controller.

5) When /BD signal is input, the main controller outputs the video signal (VDO, /VDO) to the engine controller to adjust the writing position in image horizontal direction.

*: Unblanking periodThe period during which the laser diode is emitted in non-image area.

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Technical Overview > Laser Exposure System > Laser Scanner Motor Control > Overview

Technical Overview > Laser Exposure System > Laser Scanner Motor Control > Overview

Laser Control

Auto Power Control (APC)This is the control to emit a constant level of laser diode.There are two types of APC; initial APC (note 1), and line space APC (note 2). The laser driver executes the same procedure for both controls. The following is the details of the control procedure.

1) When the laser control signal enters APC mode (CNT0=H, CNT1=L), the laser driver emits LD in APC mode.

2) The emission level of LD is detected with photo diode (PD), converted from current output to voltage, and compared with the standard voltage (voltage equivalent to the target laser level).

3) The laser driver controls the laser current to achieve the voltage of LD target level.

4) When the laser control signal enters LD forced OFF mode, the LD is forcibly turned off. The laser driver saves the adjusted laser intensity to the capacitor (C1).

NOTE:1. Initial APCAPC that is executed during initial rotation. APC adjusts laser intensity and detects faults in the laser.

2. Line space APCAPC that is executed during printing. Laser intensity for one line is adjusted before writing one line.

Laser Scanner Motor Control

OverviewThis is the control to rotate the Scanner Motor (M2) at a constant speed to emit the laser beam on the correct position on the photosensitive drum.The following is the control circuit of the Scanner Motor (M2).

Engine controller Motor driver PCB

BD PCB

Oscillator

Reference clock

Frequencycomparator

Laser scanner unit

Integrationcircuit

M

Scanner motor driver IC

Scanner motor

ACC

DEC

/BDI

Drivecircuit

CPU ASIC

X501

+24VA +24VA

The engine controller creates standard clock based on oscillation frequency of the oscillator (X501); the cycles of the standard clock is compared with that of BD input signal (/BDI) with a frequency comparator and the rotations of the Scanner Motor (M2) is monitored.The engine controller sends the scanner motor acceleration signal (ACC) and scanner motor deceleration signal (DEC) to the scanner motor driver according to the detected rotation speed to control the rotation speed.

F-2-10

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Technical Overview > Laser Exposure System > Service Tasks > Notes on service tasks

Technical Overview > Laser Exposure System > Service Tasks > Notes on service tasks

Scanner Motor Fault DetectionThis is the detection of faults in the laser scanner unit.When the laser scanner unit falls into either of the following status, the engine controller judges it as a fault in the laser scanner unit system and notices the status of fault to the main controller.The operations of the host machine are stopped.

1. Fault in BD inputAt startup of the scanner, /BDI signal cannot be detected within 0.1 sec from the completion of forced acceleration of the Scanner Motor (M2).

2. Fault in startupDuring activating the Scanner Motor (M2) at startup of the scanner, the motor rotation exceeds the specified range (98.3 to 102.1%).

3. Fault in controlAfter startup of the scanner completes correctly, /BDI signal exceeds the specified value of cycle 10 consecutive times.

Service Tasks

At parts replacementNo task is required for this product at parts replacement.



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Technical Overview > Image Formation System > Overview/Configuration > Print Process

Technical Overview > Image Formation System > Overview/Configuration > Print Process

Image Formation System

Overview/Configuration

OverviewThe image formation system is the core of this equipment; it forms toner images on papers.The image formation system is comprised of the following components.The engine controller controls the laser scanner unit and high-voltage power supply circuit and forms images based on the video signals on papers.The following are the details of print process for this equipment and the functions of image formation.

Fixing assembly

Cartridge

Photosensitive drum

To primary charging roller

To developing cylinder

Engine controllerTR PR

I

DE

V

High-voltage power supply

VIDEO signal

Main controller

CPU

Laser/scanner unitLaser beam

Fixing Film

Pressure roller

Transfer roller

F-2-11

Print ProcessThis explains the basic process of the operations that a printer executes for image formation.The print process of this equipment is divided largely into 5 blocks, 7 steps.Toner images are formed on papers by executing the steps of each block in order.The following are the blocks of print process and the steps.

1. Static latent image formation blockStep 1: Primary chargingStep 2: Laser beam exposure

2. Development blockStep 3: Development

3. Transfer blockStep 4: TransferStep 5: Separation

4. Fixing blockStep 6: Fixing

5. Drum cleaning blockStep 7: Drum cleaning

Paper pathRotational direction of the drum

Electrostatic latent image formation block

Transfer blockFixing block

Developmentblock

Drum cleaningblockDelivery

Pick-up4. Transfer5. Separation6. Fixing

2. Laser beam exposure

3. Development

7. Drum cleaning

1. Primary charging

F-2-12

222-15

2-15

Technical Overview > Image Formation System > Overview/Configuration > Development Block

Technical Overview > Image Formation System > Overview/Configuration > Development Block

Static Latent Image Formation BlockThis block is comprised of two steps and forms static latent images on the photosensitive drum.When the final step of this block completes, negative charge remains at dark areas on the drum surface where laser beam has not been exposed, and negative charge is eliminated from bright areas on the drum surface with laser beam exposed. The images on the drum with negative charge are called static latent images because human eyes cannot detect them.

0Time (t)

Surface potential

(V)

Laser beam

exposure (step 2)

Transfer (step 4)

Primary charging (step 1)

Primary charging (step 1)

Exposed area

Unexposed area

Step 1: Primary chargingFor preparation of latent image formation, the surface of photosensitive drum is charged with even negative potential. In this primary charging, the charge is applied from the primary charging roller directly to the photosensitive drum.DC bias is applied to the primary charging roller to maintain an even pot

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