Canon L100, L150 Series, 154 Series, L170, L174 Series Service Manual

...

87654321

Service Manual Rev.0

L100 / L150 / 154 / L170 / L174 Series

Application

This manual has been issued by Canon Inc. for qualied 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.

Corrections

This 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.

Trademarks

The product names and company names used in this manual are the registered trademarks

of the individual companies.

not be copied, reproduced or translated into another language, in whole or in part, without the

consent of Canon Inc.

Caution

Use of this manual should be strictly supervised to avoid disclosure of condential

information.

Explanation of Symbols

The 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 specic 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 ipping 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 eld. 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

Safety Precautions

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

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

Toner Safety -------------------------------------------------------------------- 0-7

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

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

Product Overview

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

Host Machine ----------------------------------------------------------------------- 1-2

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

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

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

Specications ------------------------------------------------------------------1-3

Product Specications ------------------------------------------------------------ 1-3 ADF Specications ---------------------------------------------------------------- 1-3 FAX Specications ---------------------------------------------------------------- 1-4

Parts Name ---------------------------------------------------------------------1-4

External View ----------------------------------------------------------------------- 1-4

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

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

Technical Overview

Basic Conguration -----------------------------------------------------------2-2

Conguration function ------------------------------------------------------------ 2-2 Basic Sequence -------------------------------------------------------------------- 2-2

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

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

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

Overview -------------------------------------------------------------------------------------- 2-5

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

General description ------------------------------------------------------------------------ 2-5

Power Supply ----------------------------------------------------------------------- 2-6

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

Service Tasks ----------------------------------------------------------------------- 2-7

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

Original Exposure System --------------------------------------------------2-8

Overview ----------------------------------------------------------------------------- 2-8 Major Components ---------------------------------------------------------------- 2-8

Various Control ------------------------------------------------------------------------------ 2-8

Detecting Jam ---------------------------------------------------------------------- 2-9

Jam Detection Outline --------------------------------------------------------------------- 2-9

Service Tasks ----------------------------------------------------------------------- 2-9

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

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

Overview ----------------------------------------------------------------------------2-10

Overview -------------------------------------------------------------------------------------2-10

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

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

Laser Control -----------------------------------------------------------------------2-12

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

Laser Scanner Motor Control --------------------------------------------------2-12

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

Service Tasks ----------------------------------------------------------------------2-13

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

Image Formation System ------------------------------------------------- 2-14

Overview/Conguration ---------------------------------------------------------2-14

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

High-Voltage Control ------------------------------------------------------------- 2-17

Overview -------------------------------------------------------------------------------------2-17 Generating Primary Charging Bias ---------------------------------------------------- 2-17 Generating Developing Bias ------------------------------------------------------------2-17 Generating Transfer Bias ----------------------------------------------------------------2-17

Toner Cartridge --------------------------------------------------------------------2-18

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

Service Tasks ----------------------------------------------------------------------2-19

At parts replacement ---------------------------------------------------------------------- 2-19 Maintenance --------------------------------------------------------------------------------2-19 Notes on service tasks -------------------------------------------------------------------2-19

Fixing System ----------------------------------------------------------------2-20

Overview/Conguration ---------------------------------------------------------2-20

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

Various Control Mechanisms --------------------------------------------------2-21

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

Other Functions -------------------------------------------------------------------2-23

Throughput Down Control ---------------------------------------------------------------2-23

Service Tasks ----------------------------------------------------------------------2-24

At parts replacement ---------------------------------------------------------------------- 2-24 Maintenance --------------------------------------------------------------------------------2-24 Notes on service tasks -------------------------------------------------------------------2-24

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

Overview ----------------------------------------------------------------------------2-25

Overview -------------------------------------------------------------------------------------2-25

Detecting Jams --------------------------------------------------------------------2-26

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

Service Tasks ----------------------------------------------------------------------2-29

At parts replacement ---------------------------------------------------------------------- 2-29 Maintenance --------------------------------------------------------------------------------2-29 Notes on service tasks -------------------------------------------------------------------2-29

Periodical Services

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

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

Consumables ------------------------------------------------------------------3-2

Consumables ----------------------------------------------------------------------- 3-2

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

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

Cleaning -------------------------------------------------------------------------3-2

Disassembly/Assembly

PREFACE -----------------------------------------------------------------------4-2

Outline -------------------------------------------------------------------------------- 4-2

List Of Parts --------------------------------------------------------------------4-3

External View ----------------------------------------------------------------------- 4-3

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

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

List of Main Unit -------------------------------------------------------------------- 4-7

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

Electrical Components ------------------------------------------------------------ 4-9

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

List of Connectors ----------------------------------------------------------- 4-14

ADF Unit ----------------------------------------------------------------------------4-14

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

Printer Unit --------------------------------------------------------------------------4-16

External Cover ---------------------------------------------------------------4-18

Layout Drawing -------------------------------------------------------------------- 4-18

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

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

Procedure ------------------------------------------------------------------------------------4-23

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

Procedure ------------------------------------------------------------------------------------4-23

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

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

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

Procedure ------------------------------------------------------------------------------------4-26

Removing the Left Cover -------------------------------------------------------4-27

Procedure ------------------------------------------------------------------------------------4-27

Removing the Right Cover -----------------------------------------------------4-28

Procedure ------------------------------------------------------------------------------------4-28

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

Preparation ----------------------------------------------------------------------------------4-29 Procedure ------------------------------------------------------------------------------------4-29

Removing the Rear Cover ------------------------------------------------------4-29

Preparation ----------------------------------------------------------------------------------4-29 Procedure ------------------------------------------------------------------------------------4-29

Removing the Upper Cover ----------------------------------------------------4-30

Preparation ----------------------------------------------------------------------------------4-30 Procedure ------------------------------------------------------------------------------------4-30

Controller System -----------------------------------------------------------4-33

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

Procedure ------------------------------------------------------------------------------------4-34

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

Preparation ----------------------------------------------------------------------------------4-34 Procedure ------------------------------------------------------------------------------------4-34

Removing the Main Motor ------------------------------------------------------4-36

Preparation ----------------------------------------------------------------------------------4-36 Procedure ------------------------------------------------------------------------------------4-36

Removing the Main Controller PCB ------------------------------------------4-39

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

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

Preparation ----------------------------------------------------------------------------------4-40 Procedure ------------------------------------------------------------------------------------4-40

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

Preparation ----------------------------------------------------------------------------------4-44 Procedure ------------------------------------------------------------------------------------4-44

Removing the NCU PCB -------------------------------------------------------- 4-45

Preparation ----------------------------------------------------------------------------------4-45 Procedure ------------------------------------------------------------------------------------4-45

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

Preparation ----------------------------------------------------------------------------------4-45 Procedure ------------------------------------------------------------------------------------4-45

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

Preparation ----------------------------------------------------------------------------------4-47 Procedure ------------------------------------------------------------------------------------4-47

Removing the Toner Sensor ---------------------------------------------------4-49

Preparation ----------------------------------------------------------------------------------4-49 Procedure ------------------------------------------------------------------------------------4-49

Removing the Speaker ----------------------------------------------------------4-51

Preparation ----------------------------------------------------------------------------------4-51 Procedure ------------------------------------------------------------------------------------4-51

Original Exposure System ------------------------------------------------ 4-52

Layout Drawing -------------------------------------------------------------------- 4-52

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

Removing the ADF Unit ---------------------------------------------------------4-54

Preparation ----------------------------------------------------------------------------------4-54 Procedure ------------------------------------------------------------------------------------4-54

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

Preparation ----------------------------------------------------------------------------------4-56 Procedure ------------------------------------------------------------------------------------4-56

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

Preparation ----------------------------------------------------------------------------------4-58 Procedure ------------------------------------------------------------------------------------4-58

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

Preparation ----------------------------------------------------------------------------------4-61 Procedure ------------------------------------------------------------------------------------4-61

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

Preparation ----------------------------------------------------------------------------------4-62 Procedure ------------------------------------------------------------------------------------4-62

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

Preparation ----------------------------------------------------------------------------------4-65 Procedure ------------------------------------------------------------------------------------4-65

Removing the CIS Unit ----------------------------------------------------------4-68

Preparation ----------------------------------------------------------------------------------4-68 Procedure ------------------------------------------------------------------------------------4-68

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

Preparation ----------------------------------------------------------------------------------4-69 Procedure ------------------------------------------------------------------------------------4-69

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

Preparation ----------------------------------------------------------------------------------4-70 Procedure ------------------------------------------------------------------------------------4-70

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

Preparation ----------------------------------------------------------------------------------4-72 Procedure ------------------------------------------------------------------------------------4-72

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

Procedure ------------------------------------------------------------------------------------4-74

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

Preparation ----------------------------------------------------------------------------------4-75 Procedure ------------------------------------------------------------------------------------4-75

Laser Exposure System ---------------------------------------------------4-77

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

Preparation ----------------------------------------------------------------------------------4-77 Procedure ------------------------------------------------------------------------------------4-77

Image Formation System ------------------------------------------------- 4-79

Layout Drawing -------------------------------------------------------------------- 4-79 Removing the Transfer Roller --------------------------------------------------4-79

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

Fixing System ----------------------------------------------------------------4-81

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

Preparation ----------------------------------------------------------------------------------4-81 Procedure ------------------------------------------------------------------------------------4-81

Pickup Feed System ------------------------------------------------------- 4-86

Layout Drawing -------------------------------------------------------------------- 4-86

Removing the Pickup Unit ------------------------------------------------------4-86

Preparation ----------------------------------------------------------------------------------4-86 Procedure ------------------------------------------------------------------------------------4-86

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

Preparation ----------------------------------------------------------------------------------4-90

Removing the Pickup Solenoid ------------------------------------------------ 4-91

Preparation ----------------------------------------------------------------------------------4-91 Procedure ------------------------------------------------------------------------------------4-91

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

Preparation ----------------------------------------------------------------------------------4-93

Adjustment

Electrical Adjustment ---------------------------------------------------------5-2

Electric part-related adjustment ------------------------------------------------ 5-2

When Replacing the Main Controller PCB ------------------------------------------- 5-2 After Replacing the Main Controller PCB --------------------------------------------- 5-2

Trouble Shooting

Test Print ------------------------------------------------------------------------6-2

Test Print Function ----------------------------------------------------------------- 6-2

Trouble Shooting Items ------------------------------------------------------6-3

Image Faults ------------------------------------------------------------------------ 6-3

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

Mechanical Adjustment ------------------------------------------------------6-4

Conrming Nip Width ------------------------------------------------------------- 6-4

Version Upgrade --------------------------------------------------------------6-5

Overview ----------------------------------------------------------------------------- 6-5 Preparation -------------------------------------------------------------------------- 6-5

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

Downloading System Software ------------------------------------------------- 6-6

Log Collector -------------------------------------------------------------------6-8

Overview ----------------------------------------------------------------------------- 6-8

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

Error Codes

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

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

Overview -------------------------------------------------------------------------------------- 7-4

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

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

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

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

Service Mode

Overview ------------------------------------------------------------------------8-2

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

Screen ow of Service mode ------------------------------------------------------------ 8-2

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

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

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

I/O -------------------------------------------------------------------------------------- 8-3

R-CON ----------------------------------------------------------------------------------------- 8-3

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

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

FUNCTION -------------------------------------------------------------------------- 8-4

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

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

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

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

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

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

FEEDER -------------------------------------------------------------------------8-8

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

FAX -------------------------------------------------------------------------------8-9

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

TONE/PULSE ------------------------------------------------------------------------------ 8-11 2ND DTN ------------------------------------------------------------------------------------8-12 BUSTONE0 ---------------------------------------------------------------------------------8-12 BUSTONE1 ---------------------------------------------------------------------------------8-12 REORDRTN --------------------------------------------------------------------------------8-13 MULTI -----------------------------------------------------------------------------------------8-13 AUTO RX ------------------------------------------------------------------------------------8-13 CNGDTCT ----------------------------------------------------------------------------------- 8-13 SPECIALB ----------------------------------------------------------------------------------- 8-14 SPECIALN -----------------------------------------------------------------------------------8-14 RKEY -----------------------------------------------------------------------------------------8-14 PBXDIALT -----------------------------------------------------------------------------------8-14 PBXBUSYT ---------------------------------------------------------------------------------8-14

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

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

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

SCAN --------------------------------------------------------------------------------8-15

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

FAX ----------------------------------------------------------------------------------- 8-16

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

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

Appendix

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

General Circuit Diagram ----------------------------------------------------------- IV

Signal Input/Output List ------------------------------------------------------9-5 General Timing Chart --------------------------------------------------------9-6 Backup 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

CDRH Provisions

Food 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 certied their compliance with the provisions

to market in the US. Each product shall have afxed 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

classications.

F-0-1

Laser Safety

About Laser Beams

Laser 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 certicated as a Class 1 laser product under IEC60825-1:2007.

Handling Laser Scanner Unit

Before 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 reection has afxed the caution label at the

position shown in the gure below.

F-0-2

0-12

Toner Safety

About Toner

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

Never throw toner in ames 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 bers 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 xed 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 gemäß der Anleitung beseitigen.

Notes on Assembly/Disassembly

Follow 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.

Product Overview

■Product Lineup

■Product Features

■Specications

■Parts Name

1-2

Product Overview > Product Features > Product Features

Product Lineup

Host Machine

Model name L100 / L170 / L174 L150

L150 CHN / L150 KOR

/ L154

Conguration

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

■L150

Handset

■L150 CHN / L150 KOR / L154

None

T-1-1

Product Features

1. 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 consumption

This machine uses the on-demand xing 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 quality

This 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 operability

User 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.

1-3

Product Overview > Specications > ADF Specications

Specications

Product Specications

Copyboard Stream reading Machine installation method Desktop Light source LED Image reading method CIS Photosensitive medium OPC Drum (φ24 mm ) Exposure method Laser beam (semiconductor laser) Charging method Roller charging method Developing method Jumping development method Transfer method Roller transfer method Separation method Curvature separation Paper feed method Pickup Tray : Pad separation method

Multi-purpose Tray : None Delivery method Face-down Drum cleaning method Blade cleaning Fixing method On-demand method Toner supplying method Toner Cartridge replacement Toner level detection Yes Document type Sheet Maximum document size 216 mm×356 mm Magnication ratio 100 % magnication

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 less First 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, Ofcio, B-ofcio,

M-ofcio, Government-Letter, Government-Legal, Foolscap,

A-foolscap, Envelope COM10, Envelope C5, Envelope B5,

Envelope DL

Custom 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 Centigrade Environment humidity range 20 to 80 % Duplex method None Host Interface Standard: USB/Hi-speed USB, Options: None Hard disk capacity Standard: None, Options: None Memory capacity Standard: 64 MB, Options: None Power 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 mm Weight L100 / L170 / L174

Approx. 8.24 kg (including Toner Cartridge)

L150

Approx. 8.0 kg (including Toner Cartridge)

L150 CHN / L150 KOR / L154

Approx. 8.2 kg (including Toner Cartridge)

*: Resolution switching

With 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 dpi

Resolution priority: 600 dpi × 600 dpi

**: Copy : 600 dpi x 600 dpi only

ADF Specications

Document Exposure LED Document Scan document stream reading by xed contact image sensor (CIS) Scanning Resolution 600 dpi (horizontal scanner) X 600 dpi (vertical scanner) Number Of Gradations 256 Magnication 50 % to 200 % (1 % increment)

horizontal : image processing by Main Controller PCB

vertical : image processing by Main Controller PCB Lens CIS/Color CIS 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 xed, 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

1-4

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

FAX Specications

Suitable Line Public Switched Telephone Network (PSTN)*1 Communication Protocol Super G3 Modem speed 33.6 Kbps Data 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 / L154 Transmission: 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 ne) : 200dpi x 400 dpi

Dial method L100 / L170 / L174

One-touch dial : 30 L150 / L150 CHN / L150 KOR / L154 One-touch dial : 15 Abbreviation dial : 100 Group dial : 129 Address book dial Normal dial : entry by numeric keypad Auto redial Manual redial Concurrent transmission : 140

Reception method Auto reception

Remote reception by a telephone (initial setting ID: 25)

Report output TX Report

Communication 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 modem

speed 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

1-5

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

1-6

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

1-7

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

1-8

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

1-9

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 Species 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 Species 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

1-10

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

No. Name Function

[7] [Status Monitor/Cancel]

key

Conrms 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]

keys

Species 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

selected item, texts, numbers and other information when

changing settings. [6] [Menu] key Registers various settings.

[Paper Settings] key Species 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

1-11

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

No. Name Function

[7] [Status Monitor/Cancel]

key

Conrms and cancels a job. Also allows monitoring of this

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]

keys

Species the destination registered to the One-Touch Dial

1-15..

T-1-6

Technical Overview

■Basic Conguration

■Controller System

■Original Exposure System

■Laser Exposure System

■Image Formation System

■Fixing System

■Pickup Feed System

2-2

Technical Overview > Basic Conguration > Basic Sequence > Basic Sequence of Operation

Basic Conguration

Conguration function

The 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 xing system.

Original exposure system

External device

Control system

Laser exposure system

Pickup feed system

Image formation system

Fixing system

Main

controler

Engine

controler

Power supply

F-2-1

Basic Sequence

■Basic Sequence of Operation

The 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 Remarks WAIT (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 (initial rotation)

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.

T-2-1

2-3

Technical Overview > Basic Conguration > 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

0.06

0.9

2.0

Forcible emission

Masking emission Masking emission Masking emission

1.3Print temperature control

Print command

Waiting 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

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)

F-2-2

2-4

Technical Overview > Basic Conguration > Basic Sequence > Power-On Sequence

■Power-On Sequence

The 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 xing 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 xing unit failure and door open during above periods.

2-5

Technical Overview > Controller System > Engine Controller > General description

Controller System

Main Controller

■Overview

The 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

USB

INTERFACE

CONTROL PANEL

ENGINE

CONTROLLER

DRAM

MAIN CONTROLLER

Flash ROM

READER

CONVERTER

ANALOG TO DIGITAL

MOTOR DRIVER

DC/DC CONVERTER

CPU

ASIC

FAX MODEM

NCU

EXT

HANDSET

TEL

FAX LINE

F-2-3

Engine Controller

■General description

Engine 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

Motor

Transfer roller

High-voltage

power supply

Low-voltage

power supply

Laser scanner

unit

Solenoid

Main controller

Toner Cartridge

Sensor

CPU

Switch

Engine controller

Fixing control

F-2-4

2-6

Technical Overview > Controller System > Power Supply > Protective Functions

Power Supply

■Power Supply

5.5V

3.3V

24V

3.3V

5.5V

3.3V

Main Controller PCB

CIS Unit

Control Pan el Unit

5.5V

3.3V

1.0V

24V

DC/DC

Converte r

24V

3.3V

Engine Contr oller PCB

Generatin g

Circuit

Protectio n

Circuit

Motor Drive r PCB

Laser Sca nner Unit

Fixing Ass embly

PickupSole noid

(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 function

Low 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 x 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 function

The 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.

2-7

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

Service Tasks

■At parts replacement

●When Replacing the Main Controller PCB

The 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 > VERSION

When 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 > ALL

The machine will be automatically restarted

If 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/Region

USA English,French,Portuguese,Spanish United States(US),Canada(CA),

Brazil(BR),Mexico(MX),Other

Country group Language Select ountry/Region

EUROPE 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 (Simplied)

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 (Simplied)

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)

■Maintenance

No periodically replaced parts, durable parts or periodical service is set for this product.

■Notes on service tasks

None.

T-2-2

+ 156 hidden pages

Canon L100, L150 Series, 154 Series, L170, L174 Series Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual