Minolta Magicolor 3100 User Manual

magicolor® 3100 Series

1750051-001B

Service Manual

The essentials of imaging

www.minolta-qms.com

Introduction

1. Trademarks

The following are trademarks or registered trademarks of their respective owners. Other product names

mentioned in this manual may also be trademarks or registered trademarks of their respective owners.

Registered trademarks are registered in the United States Patent and Trademark Office; some trademarks

may also be registered in other countries. QMS, magicolor, and the MINOLTA-QMS logo are registered

trademarks of MINOLTA-QMS, Inc. Minolta is a trade-mark of Minolta Co., Ltd.

2. Copyright Notice

Rights Reserved. This manual may not be copied in whole or in part, nor transferred to any other media or

language, without the express written permission of MINOLTA-QMS, Inc.

Introduction

Cautions for operation

1. Marks giving caution

Maintenance operations requiring special cautions or additional information to descriptions of this manual

are presented as "Warning", "Caution", or "Note", according to their nature.

If instructions are not observed, death or serious injury may be caused.

If instructions are not observed, injuries of workers or physical damages to assets

(including this laser printer) may result.

Particularly important essentials for procedures, steps, rules, and others.

Reference Incidental information to descriptions.

2. Related documents

▼ Instruction manuals (standard user manuals)

Describe operation and handling of this laser printer.

▼ Performance specifications

Describe in detail various specifications of this laser printer.

(In the event of discrepancy between this manual and the performance specifications, the performance

specifications shall take preference.)

▼ Spare parts list

Information on maintenance parts (spare parts) for this laser printer

3. Safety

To prevent possible accidents during maintenance operation, you should observe strictly the "Warning" and

"Caution" information in this manual.

Dangerous operations and operations out of range of this manual should be absolutely avoided.

Generally various processes not covered by this manual may be required in actual operation, which should

be performed carefully always giving attention to safety.

3.1 Power source

Keep the power supply off during maintenance operation to prevent electric shock, burns and other

damages. Keep the power plug disconnected during the maintenance operation.

If the power supply should be kept connected for measurement of voltage or other similar reasons,

sufficient care should be given to prevent electric shock, by following the procedures of this manual.

Introduction

While the printer is ON, never touch live parts if not required absolutely.

Power is supplied to the power switch / inlet (LVPS ASSY) even while the printer is off.

Never touch its live components.

Do not touch live parts unless otherwise specified.

vii

3.2 Driving units

When servicing gears or other driving units, be sure to turn them OFF and plug off. Drive them manually

when required.

Never touch the gears or other driving units while the printer is running.

3.3 High-temperature units

When servicing high-temperature units (securing unit, etc.), be sure to turn them OFF to prevent burns,

injuries and other troubles, remove the power plug and start service processes after they have cooled down

enough.

Immediately after completion of operation, they are still hot. Start services after more

than 40 minutes.

3.4 Laser beams

•If your eyes are exposed to laser beams, you may lose your eyesight.

•Never open the cover if warning label for laser beams is attached there.

•Before disassembling and reassembling this laser printer, be sure to turn it OFF.

•When servicing this laser printer while it is running, be sure to follow the

procedures specified in this manual.

•You should understand the features of the laser beams which are capable of

having an injurious action on the human body, not to extend the danger over the

workers as well as other people around the printer.

Laser beams have features as follows:

•Frequencies are smaller in width than other beams (sun and electric bulbs) and

phases are uniform so that high monochromatic and convergence performance

can be obtained and thin beams of light can reach places at a long distance.

•Due to the high convergence, beams are concentrated in high density and high

temperature, which is dangerous to human body.

Reference: Laser beams of this laser printer is invisible rays which you cannot see.

viii

Introduction

3.5 Warning/caution labels

Warning labels and caution labels are attached to this laser printer to prevent accidents Check those labels

for their peeling or stain when servicing the printer.

3.5.1 Caution label for high-temperature units

4. List of Abbreviations

ADC Automatic Density Control MPT Multipurpose Tray

AG Analog Ground MSI Multi Sheet Inserter

AUX Auxiliary N/F Normal Force

B/W Blank and White NP No Paper

BCR Bias Charge Roller NVM Non Volatile Memory

BTR Bias Transfer Roller (Image Transfer Roller) OPC Organic Photo Conductor

BUR Back Up Roller P/H Paper Handling

C Cyan PCDC Pixel Count Dispense Control

CART Cartridge PHD Printer Head (Imaging Cartridge)

CCW Counterclockwise Pixel Picture Cell (Picture Element)

CL Clutch PPM Prints per Minute

CLN Cleaning (or Cleaner) PV Print Volume

CLK Clock PWB Printed Wiring Board

CR Charge Roller R/H Right Hand

CRU Customer Replaceable Unit REGI Registration

CRUM CRU Monitor ROS Raster Output Scanner

CW Clockwise RTN Return

DB Developing Bias SEF Short Edge Feed

DTS Detack Saw SG Signal Ground

EP Electrophotography SNR Sensor

FDR Feeder SOL Solenoid

FG Frame Ground SOS Start of Scan

FRU Field Replaceable Unit SPI Scans per Inch

Hex Hexadecimal SYNC Synchronous

I/F Interface T/A Take Away

IDT Intermediate Drum Transfer TC Toner Concentration

ID Image Density (or Identification) TEMP Temperature

KBlackTRTransfer

L/H Left Hand TRANS Transport

L/P Low Paper WDD Wide Range Dynamic Damper

LD Laser Diode XERO Xerographic

LEF Long Edge Feed Y Yellow

M Magenta

Unpacking the Printer

The printer must be carried horizontally with two or more persons.

Extreme care must be taken to avoid personal injuries

Check visually the printer for evidence of any damages.

Peel all tapes off the printer.

Remove protection parts (2 pieces) from the paper tray.

Introduction

xii

CONTENTS

Introduction ..................................................................................................... iii

1. Trademarks ...................................................................................................................... v

2. Copyright Notice............................................................................................................... v

1. Marks giving caution........................................................................................................ vi

2. Related documents.......................................................................................................... vi

3. Safety .............................................................................................................................. vi

3.1 Power source .........................................................................................................................................vi

3.2 Driving units ......................................................................................................................................... viii

3.3 High-temperature units ........................................................................................................................ viii

3.4 Laser beams ........................................................................................................................................ viii

3.5 Warning/caution labels...........................................................................................................................ix

4. List of Abbreviations......................................................................................................... x

Contents........................................................................................................ 13

Chapter 1 Troubleshooting ........................................................................ 1-23

1. Progressing with the Troubleshooting .........................................................................1-25

1.1 Flow of Troubleshooting.................................................................................................................... 1-25

1.2 Preparatory Requirements................................................................................................................ 1-26

1.3 Cautions for Service Operations ....................................................................................................... 1-27

1.4 Cautions for FIP Use......................................................................................................................... 1-28

2. Level 1 FIP ..................................................................................................................1-30

2.1 Level 1 FIP ........................................................................................................................................ 1-30

2.2 Flow of Level 1 FIP ........................................................................................................................... 1-30

3. Level 2 FIP ..................................................................................................................1-31

3.1 Level 2 FIP ........................................................................................................................................ 1-31

3.2 Error / Status Code List..................................................................................................................... 1-31

3.3 Operating / Clearing the Error........................................................................................................... 1-34

3.4 Error Code FIP .................................................................................................................................. 1-37

3.5 Image Trouble FIP ............................................................................................................................ 1-81

3.6 Roller Circumferences ...................................................................................................................... 1-81

3.7 Other FIPs......................................................................................................................................... 1-92

4. Preventive Maintenance.............................................................................................. 1-94

Chapter 2 Operation of Diagnostics........................................................... 2-95

1. Diagnostics for a Standalone Printer ...........................................................................2-97

1.1 General ............................................................................................................................................. 2-97

1.2 Printing Method ................................................................................................................................. 2-97

1.3 Test Print Pattern .............................................................................................................................. 2-98

2. Diagnostics Using the MINOLTA- QMS magicolor 3100 Diagnostics

(Hanabi Service Commander) .........................................................................................2-99

2.1 General ............................................................................................................................................. 2-99

2.2 Preparation ..................................................................................................................................... 2-100

2.3 Operation of magicolor 3100 Diagnostics ....................................................................................... 2-101

2.4 Test Print......................................................................................................................................... 2-103

2.5 Input Test ........................................................................................................................................ 2-104

2.6 Output Test ..................................................................................................................................... 2-107

2.7 Operation of EEPROM.................................................................................................................... 2-110

Chapter 3 Removal and Replacement Procedures ................................. 3-119

1. Removal and Replacement Procedures.................................................................... 3-121

1.1 Before starting service work............................................................................................................ 3-121

1.2 Description of procedures ............................................................................................................... 3-122

RRP1. COVERS............................................................................................................3-123

RRP1.1 CONSOLE PANEL HANABI (PL1.1.1) .................................................................................... 3-123

RRP1.2 COVER ASSY FRONT HEAD (PL1.1.2) ................................................................................. 3-124

RRP1.3 FAN FUSER (PL1.1.7) ............................................................................................................ 3-126

RRP1.4 COVER TOP MAIN (PL1.1.9) .................................................................................................3-128

RRP1.5 COVER ASSY TOP PHD (PL1.1.10) ...................................................................................... 3-129

RRP1.6 COVER REAR (PL1.1.20)....................................................................................................... 3-130

RRP1.7 LINK:L (PL1.1.23).................................................................................................................... 3-131

RRP1.8 LINK:R (PL1.1.23) ................................................................................................................... 3-132

RRP1.9 COVER SIDE R (PL1.1.24)..................................................................................................... 3-133

RRP1.10 COVER ASSY FRONT IN (PL1.1.25) ................................................................................... 3-134

RRP1.11 COVER MSI (PL1.1.26) ........................................................................................................ 3-136

RRP1.12 TRAY ASSY MSI (PL1.1.28) ................................................................................................. 3-137

RRP1.13 COVER ASSY FRONT (PL1.1.29) ........................................................................................ 3-138

RRP1.14 COVER SIDE L (PL1.1.30) ................................................................................................... 3-140

RRP2. PAPER CASSETTE...........................................................................................3-141

RRP2.1 ROLL ASSY (PL2.1.1)............................................................................................................. 3-141

RRP2.2 HOLDER RETARD (PL2.1.3)..................................................................................................3-142

RRP2.3 CASSETTE ASSY FRONT (REFERENCE ONLY) ................................................................. 3-144

RRP3. PAPER FEEDER ...............................................................................................3-146

RRP3.1 CHUTE ASSY TURN (PL3.1.2)............................................................................................... 3-146

RRP3.2 COVER CASSETTE REAR (PL3.1.3)..................................................................................... 3-148

RRP3.3 FEEDER ASSY UNIT (REFERENCE ONLY) ......................................................................... 3-150

RRP3.4 HOUSING ASSY FEEDER L (REFERENCE ONLY) .............................................................. 3-152

RRP3.5 HOUSING ASSY FEEDER R (REFERENCE ONLY) ............................................................. 3-154

RRP3.6 SENSOR HUM TEMP (PL3.2.2) ............................................................................................. 3-156

RRP3.7 HARNESS ASSY OPFREC (PL3.2.3)..................................................................................... 3-157

Table of Contents

RRP3.8 SWITCH ASSY SIZE (PL3.2.4)...............................................................................................3-158

RRP3.9 LEVER LOW PAPER (PL3.2.7) .............................................................................................. 3-160

RRP3.10 INDICATOR (PL3.2.8) ........................................................................................................... 3-162

RRP3.11 GUIDE INDICATOR (PL3.2.10) ............................................................................................ 3-164

RRP3.12 PICKUP ASSY (PL3.3.1)....................................................................................................... 3-166

RRP3.13 ROLL ASSY FEED (PL3.3.2) ................................................................................................3-168

RRP3.14 SENSOR PHOTO:NO PAPER (PL3.3.3) .............................................................................. 3-170

RRP3.15 SENSOR PHOTO:LOW PAPER (PL3.3.3) ........................................................................... 3-171

RRP3.16 ACTUATOR NO PAPER (PL3.3.4) ....................................................................................... 3-172

RRP3.17 LINK ACTUATOR (PL3.3.5).................................................................................................. 3-173

RRP3.18 SOLENOID FEED (PL3.3.16) ............................................................................................... 3-174

RRP3.19 CLUTCH ASSY TURN (PL3.3.17) ........................................................................................ 3-175

RRP3.20 ROLL ASSY TURN (PL3.3.19).............................................................................................. 3-176

RRP3.21 ROLL ASSY (PL3.3.22)......................................................................................................... 3-177

RRP4. HOUSING ASSY RETARD................................................................................3-178

RRP4.1 HOUSING ASSY RETARD (PL4.1.1) ..................................................................................... 3-178

RRP4.2 ROLL TURN (PL4.1.2) ............................................................................................................ 3-179

RRP4.3 ROLL ASSY RETARD (PL4.1.5) ............................................................................................. 3-180

RRP4.4 CLUTCH TURN (PL4.1.9) ....................................................................................................... 3-182

RRP4.5 STUD RTD (PL4.1.10) ............................................................................................................ 3-183

RRP5. FRONT ASSY IN ...............................................................................................3-184

RRP5.1 FRONT ASSY IN (PL5.1.1) ..................................................................................................... 3-184

RRP5.2 SENSOR ADC ASSY (PL5.1.11) ............................................................................................ 3-187

RRP5.3 SENSOR TNR FULL (PL5.1.13) ............................................................................................. 3-188

RRP5.4 FUSER DRIVE ASSY (PL5.1.18)............................................................................................ 3-190

RRP5.5 LATCH R (PL5.1.21) ............................................................................................................... 3-192

RRP5.6 LATCH L (PL5.1.30) ................................................................................................................ 3-193

RRP6. CHUTE ASSY OUT ........................................................................................... 3-194

RRP6.1 CHUTE ASSY OUT (PL6.1.1) .................................................................................................3-194

RRP6.2 SENSOR PHOTO:FULL STACK (PL6.1.4) ............................................................................. 3-197

RRP6.3 ACTUATOR FULL (PL6.1.5) ................................................................................................... 3-198

RRP6.4 SENSOR PHOTO:DUP (PL6.1.4) ........................................................................................... 3-199

RRP6.5 SENSOR PHOTO:MSI (PL6.1.4) ............................................................................................ 3-200

RRP6.6 ELIMINATOR ASSY (PL6.1.9) ................................................................................................3-201

RRP6.7 ROLL DUP (PL6.1.12)............................................................................................................. 3-202

RRP6.8 ACTUATOR DUP (PL6.1.13) ..................................................................................................3-204

RRP6.9 LATCH OUT (PL6.1.18) .......................................................................................................... 3-206

RRP6.10 ROLL ASSY FEED (PL6.1.27) .............................................................................................. 3-207

RRP6.11 ACTUATOR MSI (PL6.1.37) .................................................................................................3-208

RRP6.12 SOLENOID FEED MSI (PL6.1.40) ........................................................................................ 3-209

RRP6.13 SHAFT ASSY ROLL FEED (REFERENCE ONLY)............................................................... 3-210

RRP6.14 PLATE ASSY BOTTOM MSI (PL6.1.42) ............................................................................... 3-212

RRP7. CHUTE ASSY EXIT...........................................................................................3-213

RRP7.1 CHUTE ASSY EXIT (PL7.1.1)................................................................................................. 3-213

RRP7.2 ROLL EXIT (PL7.1.4) ............................................................................................................. 3-214

RRP7.3 ROLL MID (PL7.1.5)................................................................................................................ 3-215

RRP7.4 MOTOR ASSY DUP (PL7.1.8) ................................................................................................ 3-216

RRP8. BTR ASSY & FUSER.........................................................................................3-217

RRP8.1 FUSER ASSY (PL8.1.1).......................................................................................................... 3-217

RRP8.2 ROLL ASSY EXIT (PL8.1.3).................................................................................................... 3-218

RRP8.3 ACTUATOR EXIT (PL8.1.7).................................................................................................... 3-220

RRP8.4 BTR UNIT ASSY (PL8.1.12) ................................................................................................... 3-221

RRP8.5 STRAP (PL8.1.13)................................................................................................................... 3-222

RRP9. XEROGRAPHICS..............................................................................................3-224

RRP9.1 ROS ASSY (PL9.1.1) .............................................................................................................. 3-224

RRP9.2 HSG ASSY BIAS (PL9.1.4) ..................................................................................................... 3-226

RRP9.3 CHUTE ASSY REGI (PL9.1.6)................................................................................................3-228

RRP9.4 SENSOR PHOTO:REGI (PL9.1.8).......................................................................................... 3-230

RRP9.5 ACTUATOR REGI (PL9.1.9) ................................................................................................... 3-231

RRP9.6 OHP SENSOR ASSY (PL9.1.12) ............................................................................................ 3-232

RRP10. TCRU ASSY ....................................................................................................3-236

RRP10.1 HOLDER TCRU ASSY UNIT (REFERENCE ONLY) ............................................................ 3-236

RRP10.2 HOLDER TCRU ASSY (1) (PL10.1.1)................................................................................... 3-239

RRP10.3 HOLDER TCRU ASSY (2) (PL10.1.2)................................................................................... 3-240

RRP10.4 HOLDER TCRU ASSY (3) (PL10.1.3)................................................................................... 3-241

RRP10.5 HOLDER TCRU ASSY (4) (PL10.1.4)................................................................................... 3-242

RRP10.6 SWITCH TCRU ASSY (PL10.1.18)....................................................................................... 3-243

RRP10.7 SENSOR TONER LOW (PL10.1.8)....................................................................................... 3-244

RRP10.8 PWBA EEPROM STD (PL10.1.16) ....................................................................................... 3-245

RRP10.9 S-HVPS (PL10.1.17) ............................................................................................................. 3-246

RRP11. FRAME & DRIVE.............................................................................................3-247

RRP11.1 LEVER DRUM:L (PL11.1.4) .................................................................................................. 3-247

RRP11.2 LEVER DRUM:R (PL11.1.4) .................................................................................................3-250

RRP11.3 ACTUATOR I/R (PL11.1.8) ................................................................................................... 3-253

RRP11.4 DEVE DRIVE ASSY (PL11.1.13) .......................................................................................... 3-254

RRP11.5 MAIN DRIVE ASSY (PL11.1.14) ........................................................................................... 3-255

RRP11.6 PWBA ASSY EARTH (PL11.1.16) ........................................................................................ 3-256

RRP12. ELECTRICAL...................................................................................................3-258

RRP12.1 PWBA HNB MCU (PL12.1.1) ................................................................................................ 3-258

RRP12.2 FAN REAR (PL12.1.2) .......................................................................................................... 3-260

RRP12.3 CONTROLLER BOARD (PL12.1.4)(TBD)............................................................................. 3-261

RRP12.4 LVPS (PL12.1.10) ................................................................................................................. 3-262

RRP12.5 HARNESS ASSY AC SW (PL12.1.11) .................................................................................. 3-264

RRP12.6 PWBA HNB DRV (PL12.1.12) ............................................................................................... 3-265

RRP12.7 BOX ASSY MCU/ESS (REFERENCE ONLY) ...................................................................... 3-266

RRP12.8 HOUSING ASSY CONTACT (PL12.1.14) ............................................................................. 3-268

Table of Contents

Chapter 4 Plug/Jack (P/J) Connector Locations...................................... 4-271

1. Connector [P (plug) / J (jack)]....................................................................................4-273

1.1 List of P/J ........................................................................................................................................ 4-273

1.2 P/J layout diagram .......................................................................................................................... 4-275

Chapter 5 Parts List ................................................................................. 5-279

1. Parts List....................................................................................................................5-281

1.1 Caution for use of parts list ............................................................................................................. 5-281

Chapter 6 Principles of Operation............................................................ 6-313

1. Printing Process ........................................................................................................6-315

1.1 Summary of Printing Process ......................................................................................................... 6-315

1.2 Schematic Diagram for Printing Processes ....................................................................................6-316

1.3 Description of Printing Process Techniques ................................................................................... 6-317

2. Flow of Print Data...................................................................................................... 6-330

2.1 Data Flow........................................................................................................................................ 6-330

3. Drive Transmission Route .........................................................................................6-331

3.1 MAIN DRIVE ASSY ........................................................................................................................ 6-331

3.2 DEVE DRIVE ASSY........................................................................................................................ 6-332

3.3 HOLDER TCRU ASSY (Y, M, C, K)................................................................................................ 6-332

3.4 FUSER DRIVE ASSY ..................................................................................................................... 6-333

3.5 MOTOR ASSY DUP ....................................................................................................................... 6-333

3.6 Gear • Layout .................................................................................................................................. 6-334

4. Paper Transport.........................................................................................................6-335

4.1 Paper Transport Route (without option).......................................................................................... 6-335

4.2 Layout of Paper Transport Route.................................................................................................... 6-336

5. Functions of Major Functional Components ..............................................................6-337

5.1 Paper Cassette ............................................................................................................................... 6-338

5.2 Paper Feeder .................................................................................................................................. 6-340

5.3 Housing Assy Retard ...................................................................................................................... 6-342

5.4 Front Assy In ................................................................................................................................... 6-344

5.5 Chute Assy Out ............................................................................................................................... 6-346

5.6 Chute Assy Exit............................................................................................................................... 6-348

5.7 BTR Assy & Fuser .......................................................................................................................... 6-350

5.8 Xerographics ................................................................................................................................... 6-352

5.9 TCRU Assy ..................................................................................................................................... 6-354

5.10 Frame & Drive ............................................................................................................................... 6-356

5.11 Electrical ....................................................................................................................................... 6-358

6. MODES .....................................................................................................................6-360

6.1 Print Mode....................................................................................................................................... 6-360

6.2 Operation Modes ............................................................................................................................ 6-360

7. Control.......................................................................................................................6-361

7.1 Control of Paper Size ...................................................................................................................... 6-361

7.2 Selective Control on Paper Pick-up Unit ......................................................................................... 6-361

7.3 ROS Light Quantity Control ............................................................................................................ 6-361

7.4 Process Control .............................................................................................................................. 6-362

7.5 Color Registration Control............................................................................................................... 6-365

7.6 BTR UNIT ASSY Control ................................................................................................................ 6-366

7.7 Toner Control .................................................................................................................................. 6-367

7.8 Fuser Control .................................................................................................................................. 6-368

Chapter 7 Wiring Diagrams and Signal Information................................. 7-369

1. General Wiring Diagram............................................................................................7-371

1. Wiring Diagram between Parts................................................................................. 7-373

1.1 Configuration................................................................................................................................... 7-373

1.2 Notes on Using the Wiring Diagram between Parts........................................................................ 7-375

Chapter 8 Printer Specifications .............................................................. 8-401

1. Configuration of Printer..............................................................................................8-403

1.1 Basic Configuration ......................................................................................................................... 8-403

1.2 Functional Configuration ................................................................................................................. 8-403

2. Electrical Properties...................................................................................................8-404

2.1 Power Source ................................................................................................................................. 8-404

2.2 Power Consumption........................................................................................................................ 8-404

3. Mechanical Properties............................................................................................... 8-404

3.1 Dimensions/Mass of Printer ............................................................................................................ 8-404

3.2 Dimensions/Mass of Universal Paper Tray (standard paper supply - 500 sheets) ......................... 8-405

3.3 Dimensions/Mass of Consumables (CRU) ..................................................................................... 8-405

3.4 Installation Space (min. installation space) ..................................................................................... 8-406

4. Functions...................................................................................................................8-407

4.1 Recording System........................................................................................................................... 8-407

4.2 Exposure System ............................................................................................................................ 8-407

4.3 Development System ...................................................................................................................... 8-407

4.4 Fixing System ................................................................................................................................. 8-407

4.5 Resolution ....................................................................................................................................... 8-407

4.6 Operation Mode .............................................................................................................................. 8-407

4.7 Speed Mode.................................................................................................................................... 8-408

4.8 Print Mode....................................................................................................................................... 8-408

4.9 Paper Mode .................................................................................................................................... 8-408

4.10 Warm-up Time .............................................................................................................................. 8-409

4.11 FPOT (First Print Output Time)..................................................................................................... 8-409

Table of Contents

4.12 Continuous Printing Speed ........................................................................................................... 8-409

4.13 Printing Area ................................................................................................................................. 8-410

4.14 Input Properties............................................................................................................................. 8-411

4.15 Output Properties.......................................................................................................................... 8-412

4.16 Paper ............................................................................................................................................ 8-412

5. Consumables.............................................................................................................8-413

5.1 Items of Consumables .................................................................................................................... 8-413

5.2 Consumable Life ............................................................................................................................. 8-413

5.3 Parts Requiring Periodical Replacement ........................................................................................ 8-414

6. Operating Environment.............................................................................................. 8-414

6.1 Installation Temperature / Humidity ................................................................................................ 8-414

6.2 Installation Altitude.......................................................................................................................... 8-414

6.3 Installation Horizontality .................................................................................................................. 8-414

6.4 Ambient Lighting ............................................................................................................................. 8-414

7. Safety / Environment Conditions ...............................................................................8-414

7.1 Safety Standard .............................................................................................................................. 8-414

7.2 Laser Safety Standard .................................................................................................................... 8-414

7.3 EMI.................................................................................................................................................. 8-414

7.4 Noise............................................................................................................................................... 8-415

8. Print image Quality .................................................................................................... 8-415

8.1 Image Quality Guarantee Conditions .............................................................................................. 8-415

9. Option........................................................................................................................8-415

9.1 Options to be Installed by Users ..................................................................................................... 8-416

Index ......................................................................................................... I-417

Chapter 1 Troubleshooting

Troubleshooting in this manual assumes use of Diag. tools (maintenance tools).

However, the troubleshooting allows for the case where the Diag tools are not used.

You can correct troubles according to these troubleshooting procedures after

understanding them well.

1. Progressing with the Troubleshooting

After making sure of actual condition of a trouble, proceed with the troubleshooting process making use of

the Fault Isolation Procedure (FIP), “Operation of Diagostics” (Chapter 2), “Plug/Jack (P/J) Connector

Locations” (Chapter 7), and “Principles of Operation” (Chapter 6).

1.1 Flow of Troubleshooting

Flow of the troubleshooting is as follows:

Prior check

Condition check

Start

Level 1 FIP

Trouble recovery check

Preventive maintenance

End

Diagnostic operation Operational principle Wiring connection diagram

Level 2 FIP

1-25

1.2 Preparatory Requirements

Be sure to check the following items before starting any troubleshooting procedures:

1) Voltage of the power supply is within the specifications (measure the voltage at the electric outlet).

2) Power cord is free from breakage, short-circuit, disconnected wire, or incorrect connection in the power

cord.

3) The laser printer is properly grounded.

4) The laser printer is not installed at a place subjected to too high temperature, too high humidity, too low

temperature, too low humidity or rapid change of temperature.

5) The laser printer is not installed close to water service, humidifier, heat generating unit, or fire, in very

dusty place, or a place exposed to air flow from the air conditioning system.

6) The laser printer is not installed in a place where volatile gas or inflammable gas is generated.

7) The laser printer is not installed under direct sunbeams.

8) The laser printer is installed in a well-ventilated place.

9) The laser printer is installed on a stout and stable plane.

10) Paper used meets specifications (standard paper is recommendable).

11) The laser printer is handled properly.

12) Parts which should be periodically replaced are replaced each time when specified number of sheets

have been printed.

1-26

Chapter 1 Troubleshooting

1.3 Cautions for Service Operations

1) Be sure to remove the power cord except when it is specifically required.

If the printer is kept ON, never touch the conductive parts while it is not specifically

required.

The power switch/inlet of LVPS is live even while the power supply is cut off. Never

touch the live parts.

2) When checking some parts with covers removed and with the interlock and safety and power switches

ON, remove the connector (P/J151) on the ROS ASSY except when it is specifically required.

When checking some parts with covers removed and with the interlock and safety and

power switches ON, laser beams may be irradiated from the ROS ASSY. Since it is

dangerous, be sure to remove the connector (P/J151) while it is not required.

3) When checking some parts with the left cover removed and power ON, be sure to remove the

connector (P/J5011) on the HVPS while it is not required.

When checking some parts with the left cover removed and power ON, high voltage

may be applied by the HVPS. Be sure to remove the connector (P/J5011) on the HVPS.

When connecting the connector (P/J5011) on the HVPS according to the instructions

of the FIP, never touch the HVPS and parts of high voltage.

4) When using Diag. tools or other tools of high voltage, be sure to keep them covered except when

otherwise specified.

When using Diag.Tool or other tools of high voltage, never touch parts of high voltage.

When using Diag.Tool or other tools of high voltage, be sure to follow the procedure of

this manual.

5)When operating the driving units using the Diag or other tools, be sure to keep them

covered unless otherwise specified.

When operating the driving units using the Diag or other tools, never touch the driving

units. When operating the driving units using Diag or other tools, be sure to observe

the procedures in this manual.

6) When touching hot parts, be careful not to get burnt.

7) Workers should wear a wrist band or the like to remove static electricity from their body, grounding

their body while working.

1-27

1.4 Cautions for FIP Use

1) It is assumed in the FIP that the printer controller (CONTROLLER PWB) is normally functioning. If the

trouble cannot be corrected by troubleshooting, replace the printer controller with a normal one and

check for proper operation again.

If the trouble is still not corrected, replace the major parts and then related parts in succession and

confirm according to the procedure of the "Initial check" and "Major check parts".

2) When troubleshooting according to the FIP, normal HNB MCU PWB, Imaging Unit (PHD) or other

parts may be necessary for isolation of failed parts. Prepare them in advance.

3) In the initial check according to the FIP, check only items which can be simply checked.

4) In the initial check according to the FIP, check the constitutive parts of the major check parts and

related parts, as well as major check parts.

5) When working with the printer, Be sure to remove the power cord except when required specifically.

Never touch live parts if not required, while the power cord is connected.

6) Connector condition is denoted as follows:

[P/J12] → Connector (P/J12) is connected.

[P12] → Plug side with the connector (P/J12) removed (except when attached directly to the board).

[J12] → Jack side with the connector (P/J12) removed (except when attached directly to the board).

7) [P/J1-2PIN <=> P/J3-4PIN] in the FIP means measurement with the plus side of the measuring instru-

ment connected to [P/J1] and the minus side to [4PIN] of [P/J3].

8) [P/J<=>P/12] in the FIP means measurement for all terminals corresponding between [P/J1] and [P/J2]

referring to "Wire connecting diagram".

9) In [P/J1-2PIN <=> P/J3-4PIN] in the FIP where voltage is measured, [P/J3-4PIN] on the rear minus

side is always at the AG (analog ground), SG (signal ground), or RTN (return).

Therefore, after checking of proper continuity between AGs, SGs, or RTNs respectively, the rear minus

side can be connected to the PIN of AG, SG or RTN instead of [P/J3-4PIN].

However, care should be taken not to mistake since [AG], [SG], and [RTN] are not on the same level.

10) Measure the voltage of small connectors with the special tool. Handle the tool with care, as the leading

edge of the tool is pointed.

11) When measuring the voltage, set the PDH ASSY, FUSER ASSY, BRT ASSY and paper tray, close the

FRONT COVER ASSY and power ON if not required specifically.

12) Numerical values in the FIP are only for standard. If numerical values are approximate, they should be

considered permissible.

1-28

Chapter 1 Troubleshooting

13) Parts which are always removed to check as indicated in the FIP and procedures for that purpose are

not specifically referred to here. They should be handled carefully.

14) "Replacement" in the FIP indicates replacement of parts which are considered to be the source of trou-

ble to be checked after replacing those parts, assemblies containing them, or parts (HIGH ASSY).

15) In the FIP, the paper pick-up unit by means of the paper tray at the lower part of the printer is referred

to as "try 1", the first level of the paper pick-up unit feeder unit as "try 2", and the second level as the

"tray3".

16) In the FIP, existence and non-existence of Diag tools (maintenance tools,) are distinguished in some

cases. Correct troubles according to the instructions in the FIP.

17) In the FIP, procedures are differentiated depending on specifications. Correct troubles according to the

instructions in the FIP.

18) For optional parts, some troubleshooting procedure may follow the manual for those options, of which

you should take note.

Keep those manuals for the optional parts when required.

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2. Level 1 FIP

2.1 Level 1 FIP

The level 1 FIP is the first step for trouble diagnosis. The level 1 FIP isolates the presence of various

troubles including error codes, and the level 2 FIP provides a guide for proceeding of the troubleshooting.

2.2 Flow of Level 1 FIP

Ask the operator about trouble status Is operator’s operating method correct?

Is error code displayed?

Image quality FIP

Is trouble related to image quality?

Print in the mode where the trouble occurred to check if error or jam occurs

Instruct how to operate

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Level 2 FIP

Level 2 FIP Other FIP

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