Ricoh MET-C1 Field Service Manual

Model MET-C1

Machine Code: D176/D177

Field Service Manual

September, 2013

Subject to change

Important Safety Notices

Prevention of Physical Injury

1. Before disassembling or assembling parts of the copier and peripherals, make sure that the copier
power cord is unplugged.

2. The wall outlet should be near the copier and easily accessible.

3. If any adjustment or operation check has to be made with exterior covers off or open while the
main switch is turned on, keep hands away from electrified or mechanically driven components.

4. The copier drives some of its components when it completes the warm-up period. Be careful to
keep hands away from the mechanical and electrical components as the copier starts operation.

5. The inside and the metal parts of the fusing unit become extremely hot while the copier is operating.
Be careful to avoid touching those components with your bare hands.

Health Safety Conditions

1. Toner and developer are non-toxic, but if you get either of them in your eyes by accident, it may
cause temporary eye discomfort. Immediately wash eyes with plenty of water. If unsuccessful, get
medical attention.

2. The copier, which use high voltage power source, can generate ozone gas. High ozone density is
harmful to human health. Therefore, the machine must be installed in a well-ventilated room.

Observance of Electrical Safety Standards

The copier and its peripherals must be serviced by a customer service representative who has completed
the training course on those models.

• Keep the machine away from flammable liquids, gases, and aerosols. A fire or an explosion might
occur.

• The Controller board on this machine contains a lithium battery. The danger of explosion exists if a
battery of this type is incorrectly replaced. Replace only with the same or an equivalent type
recommended by the manufacturer. Discard batteries in accordance with the manufacturer's
instructions and local regulations.

• The optional fax and memory expansion units contain lithium batteries, which can explode if
replaced incorrectly. Replace only with the same or an equivalent type recommended by the

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manufacturer. Do not recharge or burn the batteries. Used batteries must be handled in
accordance with local regulations.

Safety and Ecological Notes for Disposal

1. Do not incinerate toner bottles or used toner. Toner dust may ignite suddenly when exposed to an
open flame.

2. Dispose of used toner, the maintenance unit which includes developer or the organic
photoconductor in accordance with local regulations. (These are non-toxic supplies.)

3. Dispose of replaced parts in accordance with local regulations.

4. When keeping used lithium batteries in order to dispose of them later, do not put more than 100
batteries per sealed box. Storing larger numbers or not sealing them apart may lead to chemical
reactions and heat build-up.

Laser Safety

The Center for Devices and Radiological Health (CDRH) prohibits the repair of laser-based optical units
in the field. The optical housing unit can only be repaired in a factory or at a location with the requisite
equipment. The laser subsystem is replaceable in the field by a qualified Customer Engineer. The laser
chassis is not repairable in the field. Customer engineers are therefore directed to return all chassis and
laser subsystems to the factory or service depot when replacement of the optical subsystem is required.

• Use of controls, or adjustment, or performance of procedures other than those specified in this
manual may result in hazardous radiation exposure.

• Turn off the main switch before attempting any of the procedures in the Laser Optics Housing Unit
section. Laser beams can seriously damage your eyes.
CAUTION MARKING:

Warnings, Cautions, Notes

In this manual, the following important symbols and notations are used.

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• A Warning indicates a potentially hazardous situation. Failure to obey a Warning could result in
death or serious injury.

• A Caution indicates a potentially hazardous situation. Failure to obey a Caution could result in
minor or moderate injury or damage to the machine or other property.

• Obey these guidelines to avoid problems such as misfeeds, damage to originals, loss of valuable
data and to prevent damage to the machine.

• This information provides tips and advice about how to best service the machine.

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Symbols, Abbreviations and Trademarks

This manual uses several symbols and abbreviations. The meaning of those symbols and abbreviations
are as follows:

Clip ring

Screw

Connector

Clamp

SEF Short Edge Feed

LEF Long Edge Feed

[A] Short Edge Feed (SEF)

[B] Long Edge Feed (LEF)

Trademarks

Microsoft®, Windows®, and MS-DOS® are registered trademarks of Microsoft Corporation in the
United States and /or other countries.

PostScript® is a registered trademark of Adobe Systems, Incorporated.

PCL® is a registered trademark of Hewlett-Packard Company.

Ethernet® is a registered trademark of Xerox Corporation.

PowerPC® is a registered trademark of International Business Machines Corporation.

Other product names used herein are for identification purposes only and may be trademarks of their
respective companies. We disclaim any and all rights involved with those marks.

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TABLE OF CONTENTS

Important Safety Notices...................................................................................................................................1

Prevention of Physical Injury..........................................................................................................................1

Health Safety Conditions...............................................................................................................................1

Observance of Electrical Safety Standards.................................................................................................1

Safety and Ecological Notes for Disposal...................................................................................................2

Laser Safety.....................................................................................................................................................2

Warnings, Cautions, Notes...........................................................................................................................2

Symbols, Abbreviations and Trademarks.........................................................................................................4

Trademarks.....................................................................................................................................................4

1. Product Information

Product Overview.............................................................................................................................................21

Component Layout.......................................................................................................................................21

Scanner Unit.................................................................................................................................................22

Laser Exposure Unit.....................................................................................................................................23

Image Transfer Unit......................................................................................................................................24

PCDU............................................................................................................................................................25

Toner Supply / Waste Toner Bottle...........................................................................................................26

Paper Feed Unit...........................................................................................................................................27

Duplex Unit...................................................................................................................................................28

By-pass unit .................................................................................................................................................29

Fusing Unit....................................................................................................................................................30

Paper Transfer / Paper Exit.........................................................................................................................31

Air Flow.........................................................................................................................................................32

Drive Unit......................................................................................................................................................33

Board / Switch............................................................................................................................................34

Paper Path....................................................................................................................................................35

Drive Layout..................................................................................................................................................37

Machine Codes and Peripherals Configuration............................................................................................39

Diagram........................................................................................................................................................39

Options................................................................................................................................................39

Specifications....................................................................................................................................................43

Guidance for Those Who are Familiar with Similar Products.......................................................................44

Differences from similar models..................................................................................................................44

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Scan, LD unit, Paper feed unit............................................................................................................44

Duplex, Driving, Main frame.............................................................................................................44

PCDU....................................................................................................................................................45

Fusing...................................................................................................................................................46

Electrical component...........................................................................................................................46

New features of D176/D177...................................................................................................................46

Important notice for machine......................................................................................................................47

2. Installation

Installation Requirements.................................................................................................................................49

Environment..................................................................................................................................................49

Machine Space Requirements....................................................................................................................50

Machine Dimensions...................................................................................................................................51

Power Requirements....................................................................................................................................51

Input voltage level...............................................................................................................................52

Main Machine Installation...............................................................................................................................53

Important notice on security issues.............................................................................................................53

Overview.............................................................................................................................................53

Password setting procedure...............................................................................................................54

Installation Flow Chart.................................................................................................................................59

Accessory Check..........................................................................................................................................59

Installation Procedure..................................................................................................................................61

Removal of packing materials and shipping retainers / Removal of PCDU seal..........................61

Toner bottle installation.......................................................................................................................66

Attaching the optical cloth pocket.....................................................................................................67

Attaching paper output tray parts......................................................................................................68

Connecting the power cord...............................................................................................................68

Image quality test / settings........................................................................................................................69

Image quality test................................................................................................................................69

Checking the copy image with the test chart....................................................................................69

Paper setting........................................................................................................................................69

Moving the Machine...................................................................................................................................69

Paper Feed Unit PB3210.................................................................................................................................71

Accessory Check..........................................................................................................................................71

6

Installation procedure..................................................................................................................................71

Paper Feed Unit PB3150.................................................................................................................................75

Accessory Check..........................................................................................................................................75

Installation procedure..................................................................................................................................75

Caster Table Type M3.....................................................................................................................................79

Accessory Check..........................................................................................................................................79

Installation procedure..................................................................................................................................79

How to place MFP on the caster table..............................................................................................80

How to place the Paper Feed Unit PB3150 on the caster table.....................................................80

Platen Cover PN2000.....................................................................................................................................82

Accessory Check..........................................................................................................................................82

Installation Procedure..................................................................................................................................82

ARDF DF3090..................................................................................................................................................85

Accessory Check..........................................................................................................................................85

Installation Procedure..................................................................................................................................85

When feeding thin paper...................................................................................................................90

1 Bin Tray BN3110.........................................................................................................................................91

Accessory Check..........................................................................................................................................91

Installation Procedure..................................................................................................................................91

Internal Shift Tray SH3070.............................................................................................................................99

Accessory Check..........................................................................................................................................99

Installation procedure..................................................................................................................................99

Side Tray Type M3........................................................................................................................................104

Accessory Check.......................................................................................................................................104

Installation procedure...............................................................................................................................105

Internal Finisher SR3130...............................................................................................................................109

Accessory Check.......................................................................................................................................109

Installation Procedure................................................................................................................................109

Punch Unit PU3040.......................................................................................................................................120

Accessory Check.......................................................................................................................................120

Installation Procedure................................................................................................................................121

Internal Finisher SR3180...............................................................................................................................128

Accessory Check.......................................................................................................................................128

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Installation procedure...............................................................................................................................129

Staple setting as an initial setting.....................................................................................................140

Anti-Condensation Heater............................................................................................................................142

Anti-Condensation Heater (Scanner)......................................................................................................142

Accessory Check..............................................................................................................................142

Installation procedure.......................................................................................................................143

Anti-Condensation Heater (PCDU)..........................................................................................................148

Accessory Check..............................................................................................................................148

Installation procedure.......................................................................................................................149

Key Counter Bracket Type M3.....................................................................................................................155

Accessory Check.......................................................................................................................................155

Installation procedure...............................................................................................................................155

Optional Counter Interface Unit Type A......................................................................................................158

Accessory Check.......................................................................................................................................158

Installation procedure...............................................................................................................................158

Key Counter......................................................................................................................................158

Smart Card Reader Built-in Unit Type M2 (D739-36)...............................................................................160

Accessory Check.......................................................................................................................................160

Installation Procedure................................................................................................................................160

Imageable Area Extension Unit Type M3...................................................................................................166

Accessory Check.......................................................................................................................................166

Installation Procedure................................................................................................................................166

When you forgot to change the SP.................................................................................................167

Internal Options.............................................................................................................................................168

List of Slots..................................................................................................................................................168

IEEE 802.11a/g/n Interface Unit Type M2...............................................................................................170

Accessory Check.......................................................................................................................................170

Installation procedure...............................................................................................................................170

Attaching the boards........................................................................................................................171

Attaching the antenna......................................................................................................................171

Settings.......................................................................................................................................................172

Check the connection of the wireless LAN interface......................................................................172

IEEE 1284 Interface Board Type A..............................................................................................................174

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Accessory Check.......................................................................................................................................174

Installation procedure...............................................................................................................................174

File Format Converter Type E........................................................................................................................176

Accessory Check.......................................................................................................................................176

Installation procedure...............................................................................................................................176

Copy Data Security Unit Type G..................................................................................................................178

Accessory Check.......................................................................................................................................178

Installation procedure...............................................................................................................................178

Settings (to be done by the user)..............................................................................................................179

Equipment administrator settings.....................................................................................................179

Bluetooth Interface Unit Type D....................................................................................................................180

Accessory Check.......................................................................................................................................180

Installation procedure...............................................................................................................................180

SD Card Option.............................................................................................................................................182

SD Card Slots............................................................................................................................................182

List of Slots Used........................................................................................................................................182

SD Card Appli Move....................................................................................................................................184

Overview....................................................................................................................................................184

Move Exec.................................................................................................................................................185

Undo Exec..................................................................................................................................................187

Data Overwrite Security Unit Type H (D377).............................................................................................189

Overview....................................................................................................................................................189

Component List..........................................................................................................................................189

Before You Begin the Procedure..............................................................................................................189

Seal Check and Removal.................................................................................................................190

Installation Procedure................................................................................................................................191

Camera Direct Print Card Type M3.............................................................................................................192

Accessory Check.......................................................................................................................................192

Installation procedure...............................................................................................................................192

Browser Unit Type M9..................................................................................................................................194

Accessory Check.......................................................................................................................................194

Installation procedure...............................................................................................................................194

Settings.......................................................................................................................................................196

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Browser default setting.....................................................................................................................196

SD card for NetWare printing Type M3.....................................................................................................197

Accessory Check.......................................................................................................................................197

Installation procedure...............................................................................................................................197

OCR Unit Type M2........................................................................................................................................199

Accessory Check.......................................................................................................................................199

Searchable PDF function outline..............................................................................................................199

Installation procedure...............................................................................................................................199

Postscript3 Unit Type M3..............................................................................................................................202

Accessory Check.......................................................................................................................................202

Installation procedure...............................................................................................................................202

Security Function Installation.........................................................................................................................204

Data Overwrite Security...........................................................................................................................205

Before You Begin the Procedure.....................................................................................................205

Installation Procedure.......................................................................................................................205

HDD Encryption.........................................................................................................................................206

Before You Begin the Procedure.....................................................................................................206

Enable Encryption Setting................................................................................................................207

Check the Encryption Settings..........................................................................................................210

Print the encryption key....................................................................................................................211

Memory Unit Type M3 2GB.........................................................................................................................213

Accessory Check.......................................................................................................................................213

Installation Procedure................................................................................................................................213

3. Preventive Maintenance

PM Parts Settings............................................................................................................................................215

Replacement procedure of the PM parts.................................................................................................215

After installing the new PM parts..............................................................................................................216

Preparation before operation check........................................................................................................216

Operation check........................................................................................................................................217

4. Replacement and Adjustment

Notes on the Main Power Switch.................................................................................................................219

Push Switch................................................................................................................................................219

Characteristics of the Push Switch (DC Switch)..............................................................................219

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Shutdown Method............................................................................................................................220

Forced Shutdown..............................................................................................................................220

Beforehand.....................................................................................................................................................222

Special Tools..................................................................................................................................................223

Exterior Covers...............................................................................................................................................224

Front Cover................................................................................................................................................224

Controller Cover........................................................................................................................................226

Upper Left Cover.......................................................................................................................................226

Left Rear Cover..........................................................................................................................................227

Left Cover...................................................................................................................................................227

Rear Cover.................................................................................................................................................230

Rear Right Cover.......................................................................................................................................231

Rear Lower Cover......................................................................................................................................231

Scanner Rear Cover..................................................................................................................................232

Scanner Rear Cover (Small).....................................................................................................................232

Right Rear Cover.......................................................................................................................................232

Right Upper Cover ...................................................................................................................................233

Main power switch cover.........................................................................................................................234

Waste Toner Cover...................................................................................................................................234

Reverse Tray..............................................................................................................................................235

Paper Exit Tray...........................................................................................................................................236

Paper Exit Cover........................................................................................................................................236

Paper Exit Lower Cover.............................................................................................................................236

Paper Exit Front Cover..............................................................................................................................237

Inner Upper Cover....................................................................................................................................238

Inner Lower Cover.....................................................................................................................................239

Operation Panel Unit.....................................................................................................................................240

Operation Panel........................................................................................................................................240

Board A......................................................................................................................................................241

Board B......................................................................................................................................................243

Board C......................................................................................................................................................244

LCD Panel...................................................................................................................................................244

LCD.............................................................................................................................................................245

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Notes when replacing the LCD........................................................................................................245

Replacement procedure...................................................................................................................248

Scanner Unit...................................................................................................................................................250

Scanner Exterior........................................................................................................................................250

Scanner Upper Cover......................................................................................................................250

Scanner Right Cover.........................................................................................................................250

Scanner Front Cover.........................................................................................................................251

Scanner Left Cover...........................................................................................................................251

Exposure Glass..........................................................................................................................................252

Exposure Lamp (LED)................................................................................................................................254

Scanner Motor...........................................................................................................................................255

Lens Block...................................................................................................................................................258

Original Size Sensor.................................................................................................................................258

SIO.............................................................................................................................................................259

Scanner HP Sensor....................................................................................................................................260

DF Position Sensor.....................................................................................................................................261

Adjusting the Scanner Wire......................................................................................................................262

Scanner Wire (Front)........................................................................................................................262

Scanner wire assembly (front side).................................................................................................265

Scanner position adjustment............................................................................................................267

Scanner Wire (Rear)........................................................................................................................268

Scanner Wire Assembly (rear side)................................................................................................271

Modifying the Scanner (contact/contactless) when using ARDF..........................................................272

Procedure for the ADF......................................................................................................................272

Procedure for the scanner................................................................................................................275

Laser Unit........................................................................................................................................................276

Laser Unit....................................................................................................................................................276

Before Replacement.........................................................................................................................277

Removing...........................................................................................................................................277

Installing a New Laser Unit..............................................................................................................278

Adjustment after replacing the laser unit.........................................................................................279

Polygon Motor...........................................................................................................................................280

Adjustment after replacing the polygon motor...............................................................................280

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PCDU..............................................................................................................................................................281

PCDU..........................................................................................................................................................281

Before replacing the PCDU..............................................................................................................281

Replacement......................................................................................................................................281

PCU/Development Unit............................................................................................................................283

Before replacing a PCU...................................................................................................................283

Before replacing a Development Unit.............................................................................................285

Replacement......................................................................................................................................285

Notes for assembling PCU/Development unit ..............................................................................288

Method for checking after replacement.........................................................................................288

Imaging Temperature Sensor (Thermistor)..............................................................................................289

Waste Toner...................................................................................................................................................291

Replacement..............................................................................................................................................291

Adjustment after replacing........................................................................................................................291

Image Transfer Unit.......................................................................................................................................293

Image Transfer Belt Unit............................................................................................................................293

Adjustment before replacing the image transfer belt unit..............................................................294

Replacement......................................................................................................................................294

Image Transfer Cleaning Unit...................................................................................................................297

Adjustment before replacing the image transfer cleaning unit......................................................298

Replacement......................................................................................................................................298

Image Transfer Belt....................................................................................................................................301

Replacement......................................................................................................................................301

Adjustment after replacing the Image transfer belt........................................................................304

Paper Transfer Roller.................................................................................................................................305

Paper Transfer Roller Unit ........................................................................................................................305

Adjustment before replacing the paper transfer roller unit............................................................305

Replacement......................................................................................................................................305

Fusing Entrance Sensor.............................................................................................................................307

TM (ID) Sensor...........................................................................................................................................308

Before Replacing the TM(ID) sensor...............................................................................................308

Replacement procedure...................................................................................................................310

Adjustment after replacing the TM(ID) sensor................................................................................311

13

Temperature and Humidity Sensor..........................................................................................................312

ITB Contact and Release Sensor..............................................................................................................313

Drive Unit........................................................................................................................................................315

Overview....................................................................................................................................................315

Paper Feed Motor.....................................................................................................................................316

Transport Motor.........................................................................................................................................316

Transfer Motor Unit...................................................................................................................................317

Imaging Drive Unit....................................................................................................................................318

PCU Motor: CMY......................................................................................................................................320

Development Motor: CMY.......................................................................................................................320

Development solenoid..............................................................................................................................320

Fusing Motor..............................................................................................................................................322

Paper Exit / Pressure Release Motor.......................................................................................................322

Duplex Entrance Motor.............................................................................................................................323

Toner Transport Motor..............................................................................................................................324

Sub Hopper...............................................................................................................................................325

K.........................................................................................................................................................325

C.........................................................................................................................................................325

M........................................................................................................................................................327

Y.........................................................................................................................................................328

Toner End Sensor......................................................................................................................................329

Toner Bottle Drive Motor..........................................................................................................................330

K.........................................................................................................................................................330

C.........................................................................................................................................................330

M........................................................................................................................................................331

Y.........................................................................................................................................................331

ID Chip.......................................................................................................................................................331

K.........................................................................................................................................................331

C.........................................................................................................................................................332

M........................................................................................................................................................332

Y.........................................................................................................................................................333

Transport screw.........................................................................................................................................334

Y.........................................................................................................................................................334

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M........................................................................................................................................................337

C.........................................................................................................................................................338

K.........................................................................................................................................................338

Fusing Unit......................................................................................................................................................340

Fusing Unit..................................................................................................................................................340

Adjustment before replacing the fusing unit....................................................................................340

Replacement......................................................................................................................................340

Fusing Entrance Guide Plate.....................................................................................................................341

Replacement......................................................................................................................................341

Cleaning the Fusing Entrance Guide Plate.....................................................................................342

Fusing Exit Guide Plate.............................................................................................................................342

Replacement......................................................................................................................................342

Cleaning the Fusing Exit Guide Plate..............................................................................................343

Fusing Upper Cover..................................................................................................................................344

Fusing Lower Cover...................................................................................................................................344

Fusing Front Cover.....................................................................................................................................345

Fusing Rear Cover.....................................................................................................................................346

Heating sleeve unit....................................................................................................................................347

Replacement......................................................................................................................................347

How to cancel SC544-02/SC554-02 with a new unit detection fuse.......................................350

Pressure Roller............................................................................................................................................351

Adjustment before replacing the pressure roller............................................................................351

Replacement......................................................................................................................................351

Thermostat Unit..........................................................................................................................................353

Non-contact Thermistor Unit.....................................................................................................................354

Fusing Thermistor.......................................................................................................................................355

Fusing Thermopile Unit..............................................................................................................................355

Pressure Roller HP Sensor.........................................................................................................................356

Fusing Shield Position Sensor...................................................................................................................356

Fusing Shield Drive Motor........................................................................................................................357

Paper Exit........................................................................................................................................................359

Paper Exit Unit...........................................................................................................................................359

Paper Exit Switching Solenoid..................................................................................................................359

15

Paper Exit Sensor.......................................................................................................................................360

Reverse Sensor..........................................................................................................................................362

Reverse Motor...........................................................................................................................................363

Fusing Exit Sensor......................................................................................................................................364

Paper Feed.....................................................................................................................................................366

Paper Feed Unit.........................................................................................................................................366

1st Paper Feed Unit..........................................................................................................................366

2nd Paper Feed Unit........................................................................................................................367

Paper Dust Collection Unit........................................................................................................................369

Separation Roller, Torque Limiter.............................................................................................................370

Pick-up Roller, Paper Feed Roller.............................................................................................................371

1st Tray Lift Motor / 2nd Tray Lift Motor................................................................................................372

Vertical Transport Sensor..........................................................................................................................373

Limit Sensor................................................................................................................................................374

Paper End Sensor......................................................................................................................................375

Registration Sensor....................................................................................................................................376

By-pass Tray Unit...........................................................................................................................................377

By-pass Tray..............................................................................................................................................377

By-pass Paper End Sensor........................................................................................................................379

By-pass Pick-up Roller...............................................................................................................................380

By-pass Paper Feed Roller........................................................................................................................381

By-pass Separation Roller........................................................................................................................381

Torque Limiter.............................................................................................................................................382

Duplex Unit.....................................................................................................................................................383

Duplex Unit................................................................................................................................................383

Duplex/By-pass Motor.............................................................................................................................385

Duplex Entrance Sensor............................................................................................................................387

Duplex Exit Sensor....................................................................................................................................388

Electrical Components...................................................................................................................................391

Overview....................................................................................................................................................391

Printed Circuits/Parts Inside the Controller Box.............................................................................391

Printed Circuits Behind the Controller Box......................................................................................392

Printed Circuit/Parts Inside the Power Box.....................................................................................392

16

Printed Circuits Behind the Power Box............................................................................................393

IPU..............................................................................................................................................................393

BCU............................................................................................................................................................394

When installing the new BCU..........................................................................................................394

Replacing the NVRAM (EEPROM) on the BCU.............................................................................395

Controller Board........................................................................................................................................396

NVRAMs on the controller board...................................................................................................397

HDD............................................................................................................................................................401

Adjustment after replacement..........................................................................................................402

Imaging IOB..............................................................................................................................................402

HVP_TTS.....................................................................................................................................................403

PSU (AC Controller Board)......................................................................................................................404

PSU (DC Power)........................................................................................................................................404

Paper Transport IOB.................................................................................................................................405

HVP-CB......................................................................................................................................................406

When removing the HVP-CB together with its bracket..................................................................409

Fans/Filters.....................................................................................................................................................411

Odor Filter..................................................................................................................................................411

Development Intake Fan/Right................................................................................................................411

Development Intake Fan/Left...................................................................................................................412

Ozone Exhaust Fan...................................................................................................................................413

Paper Exit Cooling Fan.............................................................................................................................413

Fusing Exhaust Heat Fan...........................................................................................................................414

Toner Supply Cooling Fan........................................................................................................................415

PSU Cooling Fan.......................................................................................................................................416

Power Box Cooling Fan............................................................................................................................417

Image Adjustment..........................................................................................................................................418

Auto Color Calibration.............................................................................................................................418

Printer Gamma Correction........................................................................................................................418

Copy Mode.......................................................................................................................................419

Printer Mode.....................................................................................................................................423

Color Registration......................................................................................................................................424

Check the occurrence of color registration errors..........................................................................424

17

Judgment for type of color registration error..................................................................................424

Adjustment after replacing............................................................................................................................434

Image position adjustment........................................................................................................................434

Parts that require adjustment............................................................................................................434

Laser-related adjustment..................................................................................................................434

Scanner-related adjustment.............................................................................................................436

ADF image adjustment.....................................................................................................................439

5. Troubleshooting

Self-Diagnostic Mode...................................................................................................................................441

Service Call Codes....................................................................................................................................441

Service Call Conditions ...................................................................................................................441

SC logging.................................................................................................................................................442

SC automatic reboot.................................................................................................................................442

Controller self-diagnosis outline......................................................................................................445

Controller self-diagnosis flowchart..................................................................................................446

Service Call 101-195...................................................................................................................................450

SC100 (Engine: Scanning).......................................................................................................................450

Service Call 201-285...................................................................................................................................457

SC200 (Engine: Image Writing)..............................................................................................................457

Service Call 324-396...................................................................................................................................463

SC300 (Engine: Charge, Development).................................................................................................463

Service Call 441-498...................................................................................................................................468

SC400 (Engine: Around the Drum).........................................................................................................468

Service Call 501-584...................................................................................................................................474

SC500 (Engine: Paper transport 1: Paper Feed, Duplex, Transport)...................................................474

Service Call 620-689...................................................................................................................................520

SC600 (Engine: Communication and Others)........................................................................................520

SC600 (Controller)...................................................................................................................................528

Service Call 700-792...................................................................................................................................539

SC700 (Engine: Peripherals)....................................................................................................................539

Service Call 816-899...................................................................................................................................551

SC800 (Controller)...................................................................................................................................551

Service Call 900-998...................................................................................................................................612

18

SC900 (Engine: Others)...........................................................................................................................612

SC900 (Controller)...................................................................................................................................613

When SC549 is displayed...........................................................................................................................620

Troubleshooting Flowchart.......................................................................................................................620

Fusing Shield Check..................................................................................................................................621

Solution......................................................................................................................................................624

When SC670 is displayed...........................................................................................................................626

Troubleshooting Flowchart.......................................................................................................................626

Jam Detection.................................................................................................................................................627

Jam Display................................................................................................................................................627

Sensor Locations........................................................................................................................................628

Clearing a paper jam................................................................................................................................629

Paper Jam History......................................................................................................................................629

History checking method..................................................................................................................629

Paper Jam Display............................................................................................................................630

Jam Codes and Display Codes................................................................................................................630

Paper Size Code.......................................................................................................................................634

Image Quality................................................................................................................................................635

When an abnormal image is generated.................................................................................................635

Roller pitch.................................................................................................................................................636

OCR Unit Type M2........................................................................................................................................637

Recovery procedure..................................................................................................................................637

Electrical Component Defects.......................................................................................................................638

6. Environment

Environment....................................................................................................................................................641

Energy Saver Modes................................................................................................................................641

Timer Settings....................................................................................................................................642

Return to Stand-by Mode.................................................................................................................642

Recommendation..............................................................................................................................643

Energy Save Effectiveness........................................................................................................................643

19

20

1. Product Information

Product Overview

Component Layout

No. Description No. Description

1 Scanner Unit 6 Paper Feed Unit

2 Paper Exit Unit 7 Waste Toner Unit

21

1. Product Information

No. Description No. Description

3 Fusing Unit 8 Laser Exposure Unit

4 Paper Transfer Unit 9 PCDU

5 Duplex Unit 10 Image Transfer Unit

Scanner Unit

22

No. Description No. Description

1 Operation Panel 6 Scanner Input/Output (SIO) board

2 Scanner lamp Unit (LED) 7 Scanner motor

Product Overview

No. Description No. Description

3 Scanner Home Position sensor 8 Auto Paper Size detection (APS) sensor 1

Anti-condensation heater (Scanner

4

heater)

*1

9 Auto Paper Size detection (APS) sensor 2

5 DF Position Sensor 10 Sensor Board Unit (SBU)

Option

*1

Laser Exposure Unit

No. Description No. Description

1 Skew motor 5 Polygon mirror motor

2 Synchronizing detector board: M/Y-S 6 LD Drive Board (M/Y)

23

1. Product Information

No. Description No. Description

3 Skew motor 7 LD Drive Board (Bk/C)

4 Skew motor 8 Synchronizing detector board: Bk/C-S

Image Transfer Unit

24

No. Description

1 Interlock switch: Front cover (LD Safety Switch)

2 Interlock switch: Duplex Unit (LD Safety Switch)

3 ITB contact and release sensor

4 TM/P sensor shutter solenoid

No. Description

5 TM/P sensor (rear)

6 TM/P sensor (center)

7 TM/P sensor (front)

PCDU

Product Overview

No. Description No. Description

1 PCDU (Y) 3 PCDU (C)

2 PCDU (M) 4 PCDU (Bk)

25

1. Product Information

Toner Supply / Waste Toner Bottle

26

No. Description No. Description

1 ID chip (Y) 10 Toner end sensor (Y)

2 Toner bottle drive motor (Y) 11 Toner transport motor (M)

3 ID chip (M) 12 Toner end sensor (M)

4 Toner bottle drive motor (M) 13 Toner transport motor (C)

5 ID chip (C) 14 Toner end sensor (C)

6 Toner bottle drive motor (C) 15 Toner end sensor (Bk)

7 ID chip (Bk) 16 Toner transport motor (Bk)

No. Description No. Description

8 Toner bottle drive motor (Bk) 17 Waste toner capacity sensor

9 Toner transport motor (Y) 18 Waste toner bottle set switch

Paper Feed Unit

Product Overview

No. Description No. Description

1 Tray set switch (1st feed tray) 10 Paper feed sensor (1st feed tray)

2 Lift motor (1st feed tray) 11 Paper end sensor (2nd feed tray)

3 Tray set switch (2nd feed tray) 12 Limit sensor (2nd feed tray)

4 Lift motor (2nd feed tray) 13 Transport sensor (1st feed tray)

5 Registration sensor 14 Paper end sensor (1st feed tray)

6 Size switch (2nd Feed Tray) 15 Limit sensor (1st feed tray)

27

1. Product Information

No. Description No. Description

7 Anti-condensation heater 16 Pick-up solenoid (2nd feed tray)

8 Paper feed sensor (2nd Feed Tray) 17 Pick-up solenoid (1st feed tray)

9 Transport sensor (2nd Feed Tray)

Duplex Unit

28

No. Description No. Description

1 Duplex entrance motor 5 By-pass pick-up solenoid

2 Right door open/close switch 6 By-pass/Duplex motor

3 Duplex entrance sensor 7 By-pass paper end sensor