Brother 2170W, 2150N, HL-2140 User Manual

Brother Laser Printer

SERVICE MANUAL

MODEL:

HL-2140/2150N/2170W

Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.

Sep 2007
SM-PRN066
84UA0*
(1)

Confidential

© Copyright Brother Industries, Ltd. 2007

Compilation and Publication:

This manual has been complied and published, under the supervision of Brother Industries Ltd.,
covering the latest product descriptions and specifications. The contents of this manual and the
specifications of this product are subject to change without notice. Brother reserves the right to make
changes without notice in the specifications and materials contained herein and shall not be
responsible for any damages (including consequential) caused by reliance on the materials presented,
including but not limited to typographical and other errors relating to the publication. This product is
designed for use in a professional environment.

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PREFACE

This service manual contains basic information required for after-sales service of the laser
printer (hereinafter referred to as "the machine"). This information is vital to the service
personnel to maintain the high printing quality and performance of the machine.

This service manual covers the HL-2140/2150N/2170W machines.

This manual consists of the following chapters:

CHAPTER 1: TROUBLESHOOTING

Details of error messages and codes that the incorporated self-diagnostic function of the
machine will display if any error or malfunction occurs. If any error message appears, refer to
this chapter to find which parts should be checked or replaced.

The latter half of this chapter provides sample problems that could occur in the main sections
of the machine and related troubleshooting procedures.

CHAPTER 2: PERIODICAL MAINTENANCE

Details of consumable parts and periodical maintenance parts. This chapter also covers
procedures for disassembling and assembling periodical maintenance parts.

CHAPTER 3: DISASSEMBLY AND ASSEMBLY

Details of procedures for disassembling and assembling of the machine together with related
notes. The disassembly order flow provided enables you to see at a glance the quickest way
to get to parts involved.

At the start of a disassembly job, you can check the disassembly order flow that guides you
through a shortcut to get to the object parts.

This chapter also covers screw tightening torques and lubrication points to which the
specified lubrications should be applied during assembly jobs.

CHAPTER 4: ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED

AFTER PARTS REPLACEMENT

Details of adjustments and updating of settings, which are required if the main PCB and
some other parts have been replaced. This chapter also covers how to update the firmware.

CHAPTER 5: SERVICE SUPPORT SOFTWARE

Describes the maintenance mode which is exclusively designed for the purpose of checking
the settings and adjustments using the keys on the panel.

This chapter also covers hidden function menus, which activate settings and functions or
reset the parts life.

CHAPTER 6: CIRCUIT DIAGRAMS, WIRING DIAGRAM

Provides the Circuit Diagrams and Wiring Diagram for the connections of the PCBs.

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APPENDIX 1: SERIAL NUMBERING SYSTEM

APPENDIX 2: SCREW CATALOGUE

APPENDIX 3: DELETION OF PERSONAL INFORMATION

APPENDIX 4: REFERENCES

APPENDIX 5: GLOSSARY

Information in this manual is subject to change due to improvement or redesign of the
product. All relevant information in such cases will be supplied in service information
bulletins (Technical Information).

A thorough understanding of this machine, based on information in this service manual and
service information bulletins, is required for maintaining its print quality performance and for
improving the practical ability to find the cause of problems.

There is the service reference manual as well. This service reference manual contains
“SPECIFICATIONS”, “THEORY OF OPERATION”, “TONER CARTRIDGE WEIGHT
INFORMATION”, “REFERENCES”, and “GLOSSARY”.

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TABLE OF CONTENTS

REGULATION ..........................................................................................................vii

SAFETY INFORMATION ...........................................................................................xi

CHAPTER 1 TROUBLESHOOTING ................................................................... 1-1

1. INTRODUCTION ......................................................................................................................... 1-1

1.1 Precautions ......................................................................................................................... 1-1

1.2 Initial Check ........................................................................................................................ 1-2

2. DISTINGUISH ERROR CAUSE .................................................................................................. 1-4

2.1 LED indication ..................................................................................................................... 1-4

2.1.1 LED indication at Operator Calls ............................................................................ 1-4

2.1.2 LED indication at Service Calls .............................................................................. 1-6

2.2 Message indication ............................................................................................................. 1-7

2.2.1 Error indication at Service Calls ............................................................................. 1-7

2.3 Error Cause and Remedy ................................................................................................... 1-8

3. PAPER FEEDING PROBLEMS ................................................................................................. 1-17

3.1 No Feeding ....................................................................................................................... 1-17

3.2 Double Feeding ................................................................................................................ 1-17

3.3 Paper Jam ........................................................................................................................ 1-18

3.4 Dirt on Paper ..................................................................................................................... 1-19

3.5 Wrinkles or creases .......................................................................................................... 1-19

3.6 Waves in the paper / folds in the paper at the eject roller 2 .............................................. 1-19

3.7 Curl in the paper ............................................................................................................... 1-20

4. IMAGE DEFECT TROUBLESHOOTING ................................................................................... 1-21

4.1 Image Defect Examples .................................................................................................... 1-21

4.2 Diameter of Rollers ........................................................................................................... 1-21

4.3 Troubleshooting Image Defect .......................................................................................... 1-22

5. SOFTWARE SETTING PROBLEMS ......................................................................................... 1-35

6. NETWORK PROBLEMS ........................................................................................................... 1-36

7. OTHERS PROBLEMS ............................................................................................................... 1-37

CHAPTER 2 PERIODICAL MAINTENANCE ...................................................... 2-1

1. CONSUMABLE PARTS ............................................................................................................... 2-1

2. PERIODICAL PEPLACEMENT PARTS ...................................................................................... 2-2

CHAPTER 3 DISASSEMBLY AND ASSEMBLY ................................................ 3-1

1. SAFETY PRECAUTIONS ............................................................................................................ 3-1

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2. PACKING ..................................................................................................................................... 3-2

3. SCREW TORQUE LIST .............................................................................................................. 3-3

4. LUBRICATION ............................................................................................................................. 3-5

5. OVERVIEW OF GEARS .............................................................................................................. 3-6

6. HARNESS ROUTING .................................................................................................................. 3-7

7. DISASSEMBLY FLOW .............................................................................................................. 3-11

8. DISASSEMBLY PROCEDURE .................................................................................................. 3-12

8.1 PAPER TRAY UNIT / SEPARATION PAD ASSY ............................................................ 3-12

8.2 FRONT COVER ASSY / SW KEY .................................................................................... 3-13

8.2.1 FRONT COVER ASSY ......................................................................................... 3-13

8.2.2 SW KEY ............................................................................................................... 3-15

8.3 BACK COVER / OUTER CHUTE ASSY ........................................................................... 3-17

8.3.1 BACK COVER ...................................................................................................... 3-17

8.3.2 OUTER CHUTE ASSY ......................................................................................... 3-18

8.4 FUSER COVER ASSY ..................................................................................................... 3-19

8.4.1 FUSER COVER ASSY ......................................................................................... 3-19

8.4.2 EJECT ACTUATOR / EJECT ACTUATOR SPRING ........................................... 3-20

8.4.3 EJECT ROLLER ASSY 1 / BUSH C / BUSH R / BUSH L ................................... 3-21

8.5 INNER CHUTE ASSY ....................................................................................................... 3-22

8.6 FUSER UNIT .................................................................................................................... 3-23

8.7 SIDE COVER R ASSY ..................................................................................................... 3-25

8.8 CORNER COVER ............................................................................................................ 3-26

8.9 SIDE COVER L ASSY ...................................................................................................... 3-27

8.10 ROLLER HOLDER ASSY ................................................................................................. 3-28

8.11 WIRELESS LAN PCB ASSY (only HL-2170W) ................................................................ 3-30

8.12 MAIN SHIELD COVER PLATE ......................................................................................... 3-31

8.13 MAIN PCB ASSY .............................................................................................................. 3-32

8.14 TOP COVER ASSY .......................................................................................................... 3-33

8.14.1 TOP COVER ASSY .............................................................................................. 3-33

8.14.2 PAPER STACK LEVER ....................................................................................... 3-34

8.14.3 SUPPORT FLAP 1 / SUPPORT FLAP 2 .............................................................. 3-35

8.14.4 EJECT ROLLER ASSY 2 / BUSH R / BUSH L ................................................... 3-36

8.15 SW SUPPORTER ............................................................................................................. 3-37

8.16 PANEL PCB ASSY ........................................................................................................... 3-38

8.17 HIGH-VOLTAGE PS PCB ASSY ...................................................................................... 3-39

8.18 NEW TONER SENSOR HARNESS ASSY ....................................................................... 3-40

8.19 FILTER ASSY ................................................................................................................... 3-41

8.20 LASER UNIT ..................................................................................................................... 3-42

8.21

FAN MOTOR 60 UNIT / COVER SENSOR HARNESS ASSY / TONER LED PCB ASSY

..... 3-44

8.21.1 FAN MOTOR 60 UNIT ......................................................................................... 3-44

8.21.2 COVER SENSOR HARNESS ASSY ................................................................... 3-45

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8.21.3 TONER LED PCB ASSY ...................................................................................... 3-46

8.22 LVPS ................................................................................................................................ 3-48

8.22.1 PS PCB UNIT ....................................................................................................... 3-48

8.22.2 LV SHIELD PLATE 2 ............................................................................................ 3-50

8.23 REGISTRATION FRONT SENSOR PCB ASSY .............................................................. 3-51

8.24 REGISTRATION REAR SENSOR PCB ASSY ................................................................. 3-56

8.25 DRIVE SUB ASSY ............................................................................................................ 3-60

8.26

DEV JOINT / DEV GEAR JOINT/53R / REGISTRATION PENDULUM GEAR SPRING

8.27 TONER SENSOR PCB UNIT ASSY ................................................................................. 3-63

8.28 REGISTRATION SOLENOID / T1 SOLENOID ................................................................ 3-64

8.28.1 REGISTRATION SOLENOID ............................................................................... 3-64

8.28.2 T1 SOLENOID ...................................................................................................... 3-66

8.29 MAIN SHIELD PLATE / EJECT SENSOR PCB ASSY ..................................................... 3-67

8.30 RUBBER FOOT ................................................................................................................ 3-71

8.31 MAIN FRAME L ASSY ...................................................................................................... 3-72

CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS,

REQUIRED AFTER PARTS REPLACEMENT .............................. 4-1

.... 3-62

1. IF YOU REPLACE THE MAIN PCB ............................................................................................. 4-1

2. IF YOU REPLACE THE WIRELESS LAN PCB ......................................................................... 4-11

3. IF YOU REPLACE THE LASER UNIT ....................................................................................... 4-12

CHAPTER 5 SERVICE SUPPORT SOFTWARE ................................................ 5-1

1. CONTROL PANEL ...................................................................................................................... 5-1

1.1 List of service support functions ......................................................................................... 5-2

1.2 User Mode .......................................................................................................................... 5-3

1.3 Service Mode ...................................................................................................................... 5-5

2. OTHER SERVICE FUNCTIONS ................................................................................................ 5-16

2.1 User Maintenance Mode ................................................................................................... 5-16

CHAPTER 6 CIRCUIT DIAGRAMS, WIRING DIAGRAM ................................... 6-1

APPENDIX 1 SERIAL NUMBERING SYSTEM .......................................... App. 1-1

APPENDIX 2 SCREW CATALOGUE ......................................................... App. 2-1

APPENDIX 3 DELETION OF PERSONAL INFORMATION ....................... App. 3-1

APPENDIX 4 REFERENCES ...................................................................... App. 4-1

APPENDIX 5 GLOSSARY .......................................................................... App. 5-1

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REGULATION

<For Europe and Other countries>

■ Radio interference (220 to 240 volt model only)

This machine follows EN55022 (CISPR Publication 22)/Class B.

■ IEC 60825-1 specification (220 to 240 volt model only)

This machine is a Class 1 laser product as defined in IEC 60825-1 specifications. The label
shown below is attached in countries where it is needed.

CLASS 1 LASER PRODUCT
APPAREIL À LASER DE CLASSE 1
LASER KLASSE 1 PRODUKT

This machine has a Class 3B laser diode which produces invisible laser radiation in the laser
unit. You should not open the laser unit under any circumstances.

Caution

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

For Finland and Sweden

LUOKAN 1 LASERLAITE

KLASS 1 LASER APPARAT

Varoitus!

Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa
käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.

Varning

Om apparaten används på annat sätt än i denna Bruksanvisning specificerats, kan
användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1.

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■ Internal laser radiation

Maximum radiation power: 10 mW

Wave length: 780 - 800 nm

Laser class: Class 3B

■ EU Directive 2002/96/EC and EN50419

(European Union only)

This equipment is marked with the recycling symbol below. It means that at the end of the life
of the equipment you must dispose of it separately at an appropriate collection point and not
place it in the normal domestic unsorted waste stream. This will benefit the environment for
all. (European Union only)

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<For USA and Canada>

■ Federal Communications Commission (FCC) Declaration of Conformity
(For USA)

Responsible Party: Brother International Corporation

100 Somerset Corporate Boulevard
P.O. Box 6911
Bridgewater, NJ 08807-0911
USA
Telephone: [phone]

declares, that the products

Product name: Laser Printer HL-2140, HL-2150N and HL-2170W

Model number: HL-21

complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the end user is
encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.

• Consult the dealer or an experienced radio/TV technician for help.

Important

A shielded interface cable should be used to ensure compliance with the limits for a Class B
digital device. Changes or modifications not expressly approved by Brother Industries, Ltd.
could void the user’s authority to operate the equipment.

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■ Industry Canada Compliance Statement (For Canada)

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

■ Laser Safety (110 to 120 volt model only)

This machine is certified as a Class 1 laser product under the U.S. Department of Health
and Human Services (DHHS) Radiation Performance Standard according to the Radiation
Control for Health and Safety Act of 1968. This means that the machine does not produce
hazardous laser radiation.

Since radiation emitted inside the machine is completely confined within protective housings
and external covers, the laser beam cannot escape from the machine during any phase of
user operation.

■ FDA Regulations (110 to 120 volt model only)

The U.S. Food and Drug Administration (FDA) has implemented regulations for laser
products manufactured on and after August 2, 1976. Compliance is mandatory for products
marketed in the United States. The following label on the back of the machine indicates
compliance with the FDA regulations and must be attached to laser products marketed in the
United States.

MANUFACTURED:

Brother Technology (Shenzhen) Ltd.
NO6 Gold Garden Ind., Nanling Buji, Longgang, Shenzhen, China
This product complies with FDA performance standards for laser products except for
deviations pursuant to Laser Notice No.50, dated Jun 24, 2007.

■ Internal laser radiation

Maximum radiation power: 10 mW

Wave length: 780 - 800 nm

Laser class: Class 3B

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SAFETY INFORMATION

■ Caution for Laser Product (WARNHINWEIS fur Laser drucker)

CAUTION: When the machine during servicing is operated with the cover open, the

regulations of VBG 93 and the performance instructions for VBG 93 are
valid.

CAUTION: In case of any trouble with the laser unit, replace the laser unit itself. To

prevent direct exposure to the laser beam, do not try to open the enclosure
of the laser unit.

ACHTUNG: Im Falle von Störungen der Lasereinheit muß diese ersetzt werden. Das

Gehäuse der Lasereinheit darf nicht geöffnet werden, da sonst
Laserstrahlen austreten können.

<Location of the laser beam window>

■ Additional Information

When servicing the optical system of the machine, be careful not to place a screwdriver or
other reflective object in the path of the laser beam. Be sure to take off any personal
accessories such as watches and rings before working on the machine. A reflected beam,
though invisible, can permanently damage the eyes.

Since the beam is invisible, the following caution label is attached on the laser unit.

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■ Definitions of Warnings, Cautions, Notes and Memos

The following conventions are used in this manual:

Mark Contents

Warnings tell you what to do to prevent possible personal injury.

Electrical Hazard icons alert you to a possible electrical shock.

Hot Surface icons warn you not to touch machine parts that are hot.

Cautions specify procedures you must follow or avoid to prevent
possible damage to the machine or other objects.

Note Notes tell you useful tips when servicing the machine.

Memo Memo tells you bits of knowledge to help understand the machine.

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■ Safety Precautions

Listed below are the various kinds of “WARNING” messages included in this manual.

WARNING

There are high voltage electrodes inside the machine. Before you clean the inside of
the machine or replace parts, make sure that you have turned off the power switch
and unplugged the machine from the AC power outlet.

DO NOT handle the plug with wet hands. Doing this might cause an electrical shock.

The fuser unit becomes extremely hot during operation. Wait until it has cooled down
sufficiently before replacing consumable items. DO NOT remove or damage the
caution label located on or around the fuser.

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WARNING

DO NOT use flammable substances or any type of spray to clean the inside or outside
of the machine. Doing this may cause a fire or electrical shock.

If the machine becomes hot, blows smoke, or generates obscure odor, immediately
turn off the power switch and unplug the machine from the AC power outlet.

If metal objects, water or other liquids get inside the machine, immediately turn off the
power switch and unplug the machine from the AC power outlet.

Caution

Lightning and power surges can damage this product! We recommend that you use a quality
surge protection device on the AC power line, or unplug the machine during a lightning storm.

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CHAPTER 1 TROUBLESHOOTING

1. INTRODUCTION

Troubleshooting is the countermeasure procedures that the service personnel should follow if
an error or malfunction occurs with the machine. It is impossible to anticipate all of the
possible troubles which may occur in future and determine the troubleshooting procedures,
so this chapter covers some sample troubles. However, those samples will help the service
personnel pinpoint and repair other defective elements.

1.1 Precautions

Be sure to observe and follow all the precautions to prevent any secondary problems from
happening during troubleshooting.

(1) Always turn off the power and unplug the power cable before removing any covers or

PCBs, adjusting the machine and so on. If you need to take voltage measurements with
the power switched on, take the greatest of care not to receive an electric shock.

(2) When connecting or disconnecting cable connectors, make sure that you hold the

connector body and not the cables.

(3) Electronic devices are sensitive to static build up; make sure that you touch a metal

portion of the machine to discharge yourself before accessing the PCBs.
Handle PCBs with care when repairing them.

(4) Follow the warning by all means.

The fuser unit becomes extremely hot during operation. Wait until it has cooled down
sufficiently before replacing consumable items. DO NOT remove or damage the
caution label located on or around the fuser.

(5) Verify again that the repaired portion works properly.

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1.2 Initial Check

Check the following items before attempting to repair the machine.

■ Operating Environment

(1) Put your machine on a flat, stable surface such as a desk that is free of vibration and

shocks.

(2) Use the machine in a well-ventilated room; use the machine within the following ranges

of temperature and humidity: temperature between 10°C and 32.5°C (50°F to 90.5°F),
and the relative humidity is maintained between 20% and 80%.

(3) The machine is not exposed to direct sunlight, excessive heat, moisture, or dust.

■ Power Supply

(1) The AC input power supply described on the rating plate of the machine should be within

±10% of the rated voltage.

(2) The AC input power supply is within the regulated value.

(3) The cables and harnesses are connected correctly.

(4) The fuses are not blown.

■ Paper

(1) A recommended type of paper is being used.

(Refer to “2.6 Paper”, Reference 1 of the Service Reference Manual.)

(2) The paper is not damp.

(3) The paper is not short-grained paper or acid paper.

■ Consumable Parts

(1) The drum unit (including the toner cartridge) is installed correctly.

■ Others

(1) Condensation

When the machine is moved from a cold place into a warm room, condensation may
occur inside the machine, causing various problems as listed below.

• Condensation on the optical surfaces such as the scanner window, lenses, the
reflection mirror and the protection glass may cause the print image to be light.

• If the exposure drum is cold, the electrical resistance of the photosensitive layer is
increased, making it impossible to obtain the correct contrast when printing.

• Condensation on the charge unit may cause corona charge leakage.

• Condensation on the plate and separation pad may cause paper feed failures.

If condensation has occurred, leave the machine for at least 2 hours to allow it to reach
room temperature.

If the drum unit is unpacked soon after it is moved from a cold place to a warm room,
condensation may occur inside the unit which may cause incorrect images. Instruct the
end user to allow the unit to come to room temperature before unpacking it. This will take
one or two hours.

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(2) Cleaning

Use a soft dry cloth.

CAUTION:

DO NOT use flammable substances or any type of spray to clean the inside or outside
of the machine. Doing this may cause a fire or electrical shock.

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2. DISTINGUISH ERROR CAUSE

2.1 LED indication

2.1.1 LED indication at Operator Calls

Distinguish the contents of message by LED indication in the control panel. See the reference
page and take the corrective action described for each indication to correct it. when the red
Error LED is ON or blinking to indicate it, the machine automatically recovers from most errors.
But some of errors are necessary to reset the machine by holding down the [Go] button.

LED indication of the following table is that

LED is OFF, LED is ON and LED is blinking.

LED Type of error

1) Toner low

Error clearance by

pressing the

[Go] button

Refer to:

2) Drum life end soon

3) Toner cartridge is at the
end of life

N/A 1-8

N/A 1-8

N/A 1-8

4) Cartridge position error

1-4

N/A 1-9

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LED Type of error

5) No paper fed tray 1

6) No paper fed manual feed
slot

7) Drum error

Error clearance by

pressing the

[Go] button

N/A 1-9

N/A 1-10

N/A 1-10

Refer to:

8) Front cover is open N/A 1-12

9) Fuser cover is open N/A 1-12

10) Paper jam
(JAM TRAY 1, JAM INSIDE

N/A 1-13

/JAM REAR)

11) Memory full Ye s 1-15

12) Print overrun

Ye s 1-15

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2.1.2 LED indication at Service Calls

If service calls occur, all four LEDs blink on and off to notice it. And then when press the [Go]
button, distinguish a fault from the specific combination of ON/OFF and status color of the
LED.

When entering this state, instruct the end user to turn off the power switch, wait a few
seconds and the same service call appears, see the reference page to take the corrective
action.

LED Pressing one time of the [Go] button Type of error

13) Main PCB
failure

14) Fuser unit
failure

15) Laser unit
failure

16) Main motor
failure

Refer

to:

1-15

1-15

1-16

1-16

17) High-voltage
power
supply PCB
failure

18) Fan failure

1-16

1-16

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2.2 Message indication

2.2.1 Error indication at Service Calls

When the service call is generated, the machine can distinguish the type of error by print
printer settings or printing of maintenance. (Refer to "1.3 Service Mode" in Chapter 5.).
See the reference page to take the corrective action

Error indication

(Printing of Printer Settings)

ERROR S01 ERROR S01 13) Main PCB failure

ERROR S02 ERROR S02

ERROR S03 ERROR S03

ERROR S04 ERROR S04

ERROR S05 ERROR S05

ERROR S06 ERROR S06

ERROR S07 ERROR S07

ERROR S08 ERROR S08

ERROR S09 ERROR S09

ERROR S10 ERROR S10

ERROR S11 ERROR S11

ERROR S12 ERROR S12

ERROR S13 ERROR S13

ERROR E49 FUSER MALF 2 14) Fuser unit failure

Error indication

(Printing of Maintenance)

Type of error

Refer

to:

1-15

1-15ERROR E50 FUSER MALF

ERROR FUSER ERROR FUSER

ERROR E51 LASER BD MALF

ERROR E52 SCANNER MALF

ERROR E54 MOTOR MALF 16) Main motor failure 1-16

ERROR E55 HIGH VOL MALF

ERROR E60 ERROR E60 18) Fan failure 1-16

ERROR H61 PROG ERROR 13) Main PCB failure

ERROR H63 ERROR H63

ERROR H66 NV-W ERROR

ERROR H67 NV-R ERROR

ERROR H68 NV-B ERROR

15) Laser unit failure
(Laser beam detection error)

15) Laser unit failure
(Scanner motor failure)

17) High-voltage power supply
PCB failure

1-16

1-16

1-16

1-15

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2.3 Error Cause and Remedy

Memo :

• The following troubleshooting sections contain both the actions which end users should
take or check and the ones which service technicians should perform.

1) Toner low

Replacing of the toner cartridge

User Check

• Gently shake the toner cartridge from side to side and install it again.

• Replace the toner cartridge.

Step Cause Remedy

Harness connection failure of
toner sensor PCB ASSY

1

2 Toner sensor PCB ASSY failure Replace the toner sensor PCB ASSY.

3 Panel PCB ASSY failure Replace the panel PCB ASSY.

4 Main PCB ASSY failure Replace the main PCB ASSY.

Check the sensor performance following
the procedure in "Factory Inspection Mode"
(Chapter 5).
If any problem occurs, check the harness
connection of the toner sensor PCB ASSY,
then reconnect it.

2) Drum life end soon

Replacing of drum unit

User Check

• Replace the drum unit with a new one.

• Reset the counter. (Refer to "Resetting the drum counter" of "2.1 User Maintenance

Mode" in Chapter 5.)

3) Toner cartridge is at the end of life

User Check

• Gently shake the toner cartridge from side to side and install it again.

• Replace the toner cartridge.

Step Cause Remedy

Harness connection failure of
toner sensor PCB ASSY

1

2 Toner sensor PCB ASSY failure Replace the toner sensor PCB ASSY.

3 Panel PCB ASSY failure Replace the panel PCB ASSY.

4 Main PCB ASSY failure Replace the main PCB ASSY.

Check the sensor performance following
the procedure in "Factory Inspection Mode"
(Chapter 5).
If any problem occurs, check the harness
connection of the toner sensor PCB ASSY,
then reconnect it.

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4) Cartridge position error

Identification failure for a new toner cartridge.

User Check

• Install the toner cartridges into the machine properly.

Step Cause Remedy

Power off or front cover opened

1

while detecting a new toner
cartridge.

Reset the developing bias voltage and
develop roller counter. (Refer to "Developer

Roller Counter Reset" in Chapter 5.)

5) No paper fed tray 1

No paper in Tray (T1)

User Check

• Check if the paper is loaded into the paper tray correctly. Then press the [Go] button.

Step Cause Remedy

Registration front sensor failure Check the sensor performance following

the procedure in "Factory Inspection Mode"

1

2

3

4

Lift arm and roller holder ASSY not
assembled correctly

Harness connection failure of
registration front sensor PCB
ASSY

Harness connection failure of T1
solenoid

(Chapter 5).
If any problem occurs, replace the
registration front sensor PCB ASSY.

Be sure to put the boss of the roller holder
ASSY into the hole on the lift arm securely.

Check the harness connections of the
registration front sensor PCB ASSY, and
reconnect it.

Check the harness connections of the T1
solenoid, and reconnect it.

5 Plate-up function malfunction Replace the paper tray.

6 Toner LED PCB ASSY failure Replace the toner LED PCB ASSY.

7 Main PCB ASSY failure Replace the main PCB ASSY.

1-9

Confidential

6) No paper fed manual feed slot

No paper in manual feeding

User Check

• Load the paper

Step Cause Remedy

Harness connection failure of

1

2

3 Toner sensor PCB failure Replace the toner sensor PCB.

4 Main PCB failure Replace the main PCB ASSY.

registration front sensor PCB
ASSY

Registration front sensor PCB
failure

Check the harness connection of the
registration front sensor PCB ASSY.

Check the registration front sensor
performance following the procedure in

"Factory Inspection Mode" (Chapter 5).

If any problem occurs, replace the
registration front sensor PCB ASSY.

7) Drum error

Dirt on drum unit

User Check

• Clean the corona wire in the drum unit.

• Replace the drum unit with a new one, and reset the drum counter.

Step Cause Remedy

1

Dirt or dust on drum unit
electrodes

Clean the electrodes on the drum unit
(Refer to Fig. 1-1).

2

3 Main PCB ASSY failure Replace the main PCB ASSY failure.

High-voltage power supply PCB
failure

Replace the high-voltage power supply
PCB.

1-10

Confidential

■ Electrodes location of the drum unit

Side surface of

Drum unit

Fig. 1-1

■ Electrodes location of the machine

Side surface of

Frame L ASSY inside

Fig. 1-2

1-11

Confidential

8) Front cover is open

Front cover opened

User Check

• Check if the front cover is closed certainly.

Step Cause Remedy

Cover sensor harness ASSY

1

2

3

4 Toner LED PCB ASSY failure Replace the toner LED PCB ASSY.

5 Main PCB ASSY failure Replace the main PCB ASSY.

failure

Harness connection failure of
Cover sensor harness ASSY

Part pressing the Cover sensor
harness ASSY is broken, which is
provided at inside of front cover

9) Fuser cover is open

Fuser cover opened

User Check

• Check if the fuser cover is closed certainly.

Step Cause Remedy

1

Paper eject actuator catching on
some position

Check the sensor performance following
the procedure in "Factory Inspection Mode"
(Chapter 5). If any problem occurs, replace
the Cover sensor harness ASSY.

Check the harness connection of the Cover
sensor harness ASSY and reconnect it.

Replace the front cover ASSY.

Correct catching of the paper eject
actuator.

2 Paper eject actuator failure Replace the paper eject actuator.

3 Eject sensor PCB ASSY failure Replace the eject sensor PCB ASSY.

4 Main PCB ASSY failure Replace the main PCB ASSY.

1-12

Confidential

10) Paper jam

•JAM TRAY 1

No paper in Tray 1 (T1)

User Check

• Check if the paper is jammed in the appropriate tray. If jammed, remove it.

• Adjust the paper guide corresponding to the paper size.

• Check if too much paper is loaded in the tray.

Step Cause Remedy

1

Edge actuator or registration front
actuator catching on some position

Registration front sensor PCB
failure

2

Correct catching of the edge actuator or
registration front actuator.

Check the edge sensor and registration
front sensor performance following the
procedure in "Factory Inspection Mode"
(Chapter 5). If any problem occurs, replace
the registration front sensor PCB ASSY.

3 Paper feeding kit worn out Replace the paper feeding kit.

Harness connection failure of

4

registration front sensor PCB

Check the harness connections of the
registration front sensor PCB, and
reconnect it.

Registration front sensor PCB

5

failure

Check the sensor performance following
the procedure in "Factory Inspection Mode"
(Chapter 5). If any problem occurs, replace
the registration front sensor PCB ASSY.

6 Toner LED PCB failure Replace the toner LED PCB ASSY.

7

Registration ground spring loose Fit the registration ground spring correctly.

(Refer to Fig. 1-3.)

8 Main PCB failure Replace the main PCB ASSY.

Registration ground spring

Fig. 1-3

1-13

<Main frame R ASSY>

Confidential

• JAM INSIDE/JAM REAR

Paper jam inside the machine

User Check

• Check if the paper is jammed. If jammed, remove it.

• Check if the fuser cover is closed certainly.

Step Cause Remedy

Harness connection failure of
registration front sensor PCB

1

ASSY, paper eject sensor PCB
ASSY or registration rear sensor

Check the harness connections of the
registration front sensor PCB ASSY, paper
eject sensor PCB ASSY or registration rear
sensor PCB ASSY, and reconnect them.

PCB ASSY

Registration front actuator,

2

registration rear actuator or paper
eject actuator catching on some

Correct catching of the registration front
actuator, registration rear actuator or paper
eject actuator.

position

Paper eject sensor PCB failure Check the sensor performance following

3a

the procedure in "Factory Inspection Mode"
(Chapter 5). If any problem occurs, replace
the eject sensor PCB ASSY.

3b

Registration front sensor PCB
failure

Check the sensor performance following
the procedure in "Factory Inspection Mode"
(Chapter 5). If any problem occurs, replace
the registration front sensor PCB ASSY.

3c

Registration rear sensor PCB
failure

Check the sensor performance following
the procedure in "Factory Inspection Mode"
(Chapter 5). If any problem occurs, replace
the registration rear sensor PCB ASSY.

4 Toner LED PCB failure Replace the toner LED PCB ASSY.

5 Main PCB failure Replace the main PCB ASSY.

1-14

Confidential

11) Memory full

Memory full

User Check

• Print the stored data.

• Reduce the data capacity or reduce the print resolution.

12) Print overrun

Data expansion is not in time

User Check

• Press the [Go] button, then print the stored data.

• Reduce the complexity of data or reduce the print resolution.

13) Main PCB failure

User Check

• Turn the power off and on.

Step Cause Remedy

1 Main PCB failure Replace the main PCB ASSY.

14) Fuser unit failure

Step Cause Remedy

Harness connection failure

1

2 Fuser unit failure Replace fuser unit.

3

4 Toner LED PCB failure Replace the toner LED PCB ASSY.

5 Main PCB failure Replace the main PCB ASSY.

CAUTION:

This problem will be cleared if leaving the machine power ON for ten minutes.

Turn the power on while pressing the SW supporter, when the front cover is open. And check
that Toner, Drum and Error LEDs light up, and then release the SW supporter.
Check that all LEDs go off and press the SW supporter once, and then this problem may be
cleared by that press the SW supporter once again after all LEDs light up.

between fuser unit connector and
eject sensor PCB ASSY

Low-voltage power supply PCB
failure

Check the harness connection between
fuser unit connector and eject sensor PCB
ASSY.

Replace the PS PCB unit.

1-15

Confidential

15) Laser unit failure

Laser diode failure

Step Cause Remedy

1

2

3 Laser unit failure Replace the laser unit.

4 Main PCB failure Replace the main PCB ASSY.

Laser unit harness connection
failure

FG harness ASSY connection
failure

16) Main motor failure

Step Cause Remedy

1

2 Main motor failure Replace the drive sub ASSY.

3

4 Main PCB failure Replace the main PCB ASSY.

Main motor harness connection
failure

Low-voltage power supply PCB
failure

17) High-voltage power supply PCB failure

Check the two harness connections of the
laser unit and reconnect them.

Check the FG harness ASSY connection
between the laser unit and main PCB
ASSY. Then reconnect it.

Check the harness connection of the main
motor and reconnect it.

Replace the PS PCB unit.

Step Cause Remedy

1

2

3

4 Main PCB failure Replace the main PCB ASSY.

18) Fan failure

Step Cause Remedy

1

2 Fan failure Replace the fan motor 60 unit.

3 Toner sensor PCB failure Replace the toner sensor PCB

4 Main PCB failure Replace the main PCB ASSY.

High-voltage power supply PCB
ASSY harness connection failure

High-voltage power supply PCB
failure

Low-voltage power supply PCB
failure

Fan harness connection failure Check the harness connection of the fan

Check the harness connection between the
high-voltage power supply PCB and main
PCB. Then reconnect it.

Replace the high-voltage power supply
PCB ASSY.

Replace the PS PCB unit.

motor 60 unit, and reconnect it.

1-16

Confidential

3. PAPER FEEDING PROBLEMS

Problems related to paper feeding are end user recoverable if following the User Check
items. If the same problem occurs again, follow each procedure in the order of the number
described in the Step column in the tables below.

3.1 No Feeding

Step Cause Check

Edge actuator

1

catching on some
position

Roller holder

2

ASSY catching on
some position

Registration front
sensor failure

3

Paper feeding kit
failure

4

Pressure plate

5

gear damage

T1 solenoid failure Does the T1 solenoid

6

T1 solenoid
pathway of the

7

high-voltage
power supply PCB
broken

Does the edge actuator
move smoothly? No

Does the roller holder
ASSY move smoothly? Yes

Is the problem solved
after replacing the
registration front sensor
PCB ASSY?

Is the surface of the
separation pad or the
pickup roller dirty or worn
out?

Is the pressure plate gear
damaged?

work correctly?

Is the problem solved
after replacing the high­voltage power supply
PCB ASSY?

Result

Ye s

Ye s

Ye s

No

Ye s

Remedy

Re-assembly the edge
actuator

Re-assembly the roller
holder ASSY.

Replace the registration
front sensor PCB ASSY.

1) Clean the surface of
the separation pad or
pickup roller.

2) Replace the separation
pad or pickup roller.

Replace the paper tray.

Replace the T1 solenoid

Replace the high-voltage
power supply PCB ASSY.

Main PCB failure Is the problem solved

8

Main motor failure Is the problem solved

9

3.2 Double Feeding

Step Cause Check

Paper feeding kit

1

failure

after replacing the main
PCB ASSY?

after replacing the drive
sub ASSY?

Is the surface of the
separation pad worn out?

1-17

Ye s

Ye s

Result

Ye s

Replace the main PCB
ASSY.

Replace the drive sub
ASSY.

Remedy

Replace the paper
feeding kit.

Confidential

3.3 Paper Jam

■ Paper jam in the paper tray and front cover

Step Cause Check

Registration front
actuator/edge

1

actuator catching
on some position

Registration front
sensor PCB
(registration front

2

actuator/edge
actuator failure)

Registration

3

solenoid failure

Toner sensor PCB

4

failure

High-voltage
power supply PCB

5

failure

Registration

6

ground spring
loose

Does the registration front
actuator/edge actuator
move smoothly?

Does the registration front
sensor move smoothly?
(Check it following the
procedure described in

"Factory Inspection
Mode" in Chapter 5)

Is the problem solved
after replacing the
registration solenoid?

Is the problem solved
after replacing the toner
sensor PCB?

Is the problem solved
after replacing the High­voltage power supply
PCB ASSY?

Is the registration ground
spring fitted correctly? No

Result

No

No

Ye s

Ye s

Ye s

Remedy

Re-assemble the
registration front actuator/
edge actuator.

Replace the registration
front sensor PCB ASSY.

Replace the registration
solenoid.

Replace the toner sensor
PCB.

Replace the High-voltage
power supply PCB ASSY.

Fit the registration ground
spring correctly.
(Refer to Fig. 1-3.)

Main PCB failure Is the problem solved

7

after replacing the Main
PCB ASSY?

■ Paper jam in the back cover and paper eject section

Step Cause Check

Foreign object

1

around fuser unit

Paper eject

2

actuator failure

Fuser cover ASSY

3

loose

Outer chute ASSY

4

loose

Eject roller 2
malfunction

5

Paper eject sensor

6

PCB failure

Is there a foreign object
around the fuser unit?

Does the paper eject
actuator move smoothly?
Is it damaged?

Is the fuser cover ASSY
fitted correctly?

Is the outer chute ASSY
fitted correctly?

Is each pinch roller of the
inner chute ASSY
attached to each eject
roller 2 of top cover ASSY
properly?

Is the problem solved
after replacing the paper
eject sensor PCB?

Result

Replace the Main PCB

Ye s

ASSY.

Remedy

Remove the foreign

Ye s

object.

Replace the paper eject

No

actuator.

Fit the fuser cover ASSY

No

correctly.

Fit the outer chute ASSY

No

fitted correctly.

Replace the inner chute
ASSY.

No

Replace the paper eject

Ye s

sensor PCB.

1-18

Confidential

3.4 Dirt on Paper

User Check

• Check if the paper is loaded into the paper tray correctly.

• Turn over the stack of paper in the paper tray, or try rotating the paper 180° in the paper
tray.

Step Cause Check

Fuser unit dirty Is there dirt around the

1

3.5 Wrinkles or creases

User Check

• Check if the paper is loaded into the paper tray correctly.

• Turn over the stack of paper in the paper tray, or try rotating the paper 180° in the paper
tray.

Step Cause Check

Fuser unit dirty Is there dirt around the

1

Fuser unit failure Is the problem solved if

2

entrance of the fuser
unit?

Is the pressure roller
ASSY dirty?

entrance of the fuser
unit?

new fuser unit is
replaced?

Result

Ye s

Ye s

Result

Ye s

Ye s

Remedy

Clean the entrance of the
fuser unit.

Clean the pressure roller
ASSY.

Remedy

Clean the entrance of the
fuser unit.

Replace the fuser unit.

3.6 Waves in the paper / folds in the paper at the eject roller 2

User Check

• Check that the problem is solved if new paper is used.

Step Cause Check

Foreign object

1

around eject roller 2

Eject roller 2

2

failure

Is there a foreign object
around the eject roller 2?

Is the problem solved
after replacing the new
eject roller 2?

Result

Ye s

Ye s

Remove the foreign object.

Replace the top cover
ASSY.

Remedy

1-19

Confidential

3.7 Curl in the paper

1

1

Step Cause Check

Fuser unit
pressure is high

1

Is the problem solved
after replacing the
position of the pressure

Result

Ye s

Replace the position of the
pressure roller.

roller?

(1) Turn the Nip release lever of right and left to the direction of the arrow.

(2) Hold and turn the PR stopper plate of right and left.

2

1

NIP RELEASE LEVER

Remedy

NIP RELEASE LEVER

PRESSURE ROLLER

2

1

Fig. 1-4

PR STOPPER PLATE

1-20

Confidential

4. IMAGE DEFECT TROUBLESHOOTING

4.1 Image Defect Examples

Light

Image distortion

Black vertical streaks
in a light background

White spots

Faulty registration

All black

Black horizontal
stripes

Black spots

Dark

Dirt on the back of paper

White vertical
streaks

Black band

White horizontal
streaks

Downward fogging
of solid color

Poor fixing

Vertical streaks

Completely blank

Faint print

Horizontal lines

Ghost

Fogging

4.2 Diameter of Rollers

Image defects which appear periodically may be caused by failure of a roller. Specify the
cause referring to the diameter of the rollers or pitch which appears in the image as shown in
the table below.

No. Parts name

1 Develop roller

2 Exposure drum

3 Heat roller in the fuser unit

4 Pressure roller ASSY in the fuser unit

Fig. 1-5

1-21

Diameter

The pitch which

appears in the image

Ø20.0 mm 41.0 mm

Ø24.0 mm 75.0 mm

Ø25.0 mm 78.5 mm

Ø25.0 mm 78.5 mm

Confidential

4.3 Troubleshooting Image Defect

Image defect related problems are end user recoverable if following the User Check items. If
the same problem occurs, follow each procedure in the order of the number described in the
Step column in the tables below.

■ Light

User Check

• Check the machine's environment. High temperature and high
humidity conditions can cause this problem.

• If the whole page is light, toner save mode may be on.

• Replace the toner cartridge or drum unit with a new one.

Step Cause Check

Dirt on exposure

1

drum electrode

Dirt on scanner

2

windows of the
laser unit

Toner sensor
failure

3

4

Between the
HVPS PCB/Main

5

PCB connection
failure

Are the electrodes of the
drum unit and machine
body dirty?

Is the scanner windows
of the laser unit dirty? Yes

After replacing the toner
cartridge with a new
one, does the same
problem occur even
after printing several
pages?

Does the machine start
printing even after
removing the toner
cartridge from the drum
unit? Yes

Is the harness of the
HVPS PCB ASSY and
main PCB ASSY
connected correctly?

Result

Ye s

No

Ye s

Remedy

Clean both electrodes.

Wipe the dirt off with a soft,
clean, lint free cloth.

Replace the toner
cartridge.

Clean the toner sensor.
(receiving light side)
Check the harness
connection of the toner
LED PCB ASSY.
(luminescence side)
Replace the toner sensor
PCB ASSY or toner LED
PCB ASSY.

Reconnect the harness of
the HVPS PCB ASSY and
main PCB ASSY.

HVPS PCB

6

failure

Main PCB failure Is the problem solved

7

Laser unit failure Is the problem solved

8

Is the problem solved
after replacing the
HVPS PCB ASSY?

after replacing the main
PCB ASSY?

after replacing the laser
unit?

1-22

Replace the HVPS PCB

Ye s

ASSY.

Replace the main PCB

Ye s

ASSY.

Replace the laser unit.

Ye s

Confidential

■ Faulty registration

User Check

• Check that the appropriate media type is selected in the
printer driver.

Step Cause Check

Registration rear

1

actuator catching
on some position

Does the registration
rear actuator move
smoothly?

■ Dark

User Check

• Check the machine's environment. High temperature and high
humidity conditions can cause this problem.

• Replace the drum unit with a new one.

• Replace the toner cartridge with a new one.

Step Cause Check

HVPS PCB

1

failure

Main PCB failure Is the problem solved

2

Is the problem solved
after replacing the
HVPS PCB ASSY?

after replacing the main
PCB ASSY?

Result

No

Result

Ye s

Ye s

Remedy

Re-assemble the
registration rear actuator.

Remedy

Replace the HVPS PCB
ASSY.

Replace the main PCB
ASSY.

1-23

Confidential

■ Poor fixing

User Check

• Replace the drum unit with a new one.

• Replace the toner cartridge with a new one.

Step Cause Check

Fuser unit failure Is the problem solved

1

Low-voltage

2

power supply
PCB failure

HVPS PCB

3

failure

Main PCB failure Is the problem solved

4

after replacing the fuser
unit?

Is the problem solved
after replacing the PS
PCB unit?

Is the problem solved
after replacing the
HVPS PCB ASSY?

after replacing the main
PCB ASSY?

■ Completely blank

User Check

• Replace the drum unit with a new one.

• Replace the toner cartridge with a new one.

Result

Ye s

Ye s

Ye s

Ye s

Remedy

Replace the fuser unit.

Replace the PS PCB unit.

Replace the HVPS PCB
ASSY.

Replace the main PCB
ASSY.

Step Cause Check

Developing bias
voltage

1

conduction
failure

Scanner harness
of the laser unit

2

connection
failure

Laser unit failure Is the problem solved

3

HVPS PCB

4

failure

Main PCB failure Is the problem solved

5

Are the electrodes on
the drum unit and
machine body dirty?

Is the scanner harness
of the laser unit
connected securely?

after replacing the laser
unit?

Is the problem solved
after replacing the
HVPS PCB ASSY?

after replacing the main
PCB ASSY?

Result

Ye s

No

Ye s

Ye s

Ye s

Remedy

Clean both electrodes.

Reconnect the scanner
harness of the laser unit.

Replace the laser unit.

Replace the HVPS PCB
ASSY.

Replace the main PCB
ASSY.

1-24

Confidential

■ Image distortion

Step Cause Check

1

Laser unit not
assembled
correctly

Is the laser unit
assembled into the
machine securely?
(Check if there is no
gap.)

Incorrect
radiation angle of
scanner diode of

2

laser unit.

Is the problem solved
after replacing the laser
unit?

Scanner motor
rotation failure

Main PCB failure Is the problem solved

3

after replacing the main
PCB ASSY?

Result

Ye s

Ye s

Ye s

Remedy

Assemble the laser unit
correctly and secure the
screw.

Replace the laser unit.

Replace the main PCB
ASSY.

1-25

Confidential

■ All black

Step Cause Check

1

Corona wire
failure

Are the electrodes on
the drum unit and
machine body dirty?

2

Scanner harness
of the laser unit

3

connection

Is the corona wire
damaged?

Is the scanner harness
of the laser unit
connected securely?

failure

FG harness
ASSY connection

4

failure

Is the FG harness ASSY
between the laser unit
and main PCB ASSY
connected securely?

5

HVPS PCB
failure

Is the problem solved
after replacing the
HVPS PCB ASSY?

Main PCB failure Is the problem solved

6

after replacing the main
PCB ASSY?

Laser unit failure Is the problem solved

7

after replacing the laser
unit?

Result

Ye s

Ye s

No

No

Ye s

Ye s

Ye s

Remedy

Clean both electrodes.

Replace the drum unit.

Reconnect the scanner
harness of the laser unit.

Reconnect the FG harness
ASSY between the laser
unit and main PCB ASSY
securely.

Replace the HVPS PCB
ASSY.

Replace the main PCB
ASSY.

Replace the laser unit.

1-26

Confidential

■ Dirt on the back of paper

Step Cause Check

Scratch and Dirt
on the fuser unit

1

Scratch and Dirt

2

in the paper feed
system

Is the pressure roller
ASSY dirty? Is any other
area in the machine dirty?

Is the paper feed system
dirty? Yes

■ Vertical streaks

User Check

• This problem may occur with noise which is caused by dirt

• Replace the drum unit with a new one.

• Replace the toner cartridge with a new one.

Step Cause Check

Scratch and Dirt

1

in the paper feed
system

Is the paper feed system
dirty? Yes

Result

Print approximate 10

Ye s

pages.

No Replace the fuser unit.

Wipe dirt off.

on the corona wire in the drum unit. In this case, clean the
corona wire with the wire cleaner.

Result

Wipe dirt off.

Remedy

Remedy

Scratch and Dirt

2

on the exposure
drum

Scratch and Dirt

3

on the heat roller

CAUTION:

If the machine prints the same pattern, especially including vertical streaks, continuously,
black vertical streaks may appear on the paper since the electrostatic performance of the
exposure drum is decreased temporally.

Are there scratch and
dirt on the surface of the
exposure drum?

Are there scratch and
dirt on the surface of the
heat roller?

Replace the drum unit.

Ye s

Replace the fuser unit.

Ye s

■ Black vertical streaks in a light background

User Check

• Clean the inside of the machine and the corona wire in the drum
unit.

• Replace the toner cartridge with a new one.

Step Cause Check

Drum unit failure

1

Is the problem solved after
replacing the drum unit?

Result

Ye s

Remedy

Replace the drum unit.

1-27

Confidential

■ Black horizontal stripes

User Check

• Clean the inside of the machine and the corona wire in the drum
unit.

• Replace the drum unit with a new one.

Step Cause Check

Dirt on the

1

charged
electrode

Paper tray
ground terminal

2

provided in the
machine body

Toner attached
on the develop

3

roller

Are the electrodes on
the drum unit and
machine body dirty?

Is the paper tray ground
terminal bent, which is
provided in the machine
body?
(Refer to

Fig. 1-6

Are the horizontal stripes
at 41.0 mm (develop
roller circumference)
intervals?

Scratch and Dirt
on the exposure

4

drum

Are the horizontal stripes
at 75.0 mm (exposure
drum circumference)
intervals?

Scratch and Dirt

5

on the heat roller

Are the horizontal stripes
at 78.5 mm (heat roller
circumference) intervals?

6

HVPS PCB
failure

Is the problem solved
after replacing the
HVPS PCB ASSY?

Result

Remedy

Clean both electrodes

Ye s

Correct bending of paper
tray ground terminal.

Ye s

.)

This problem will disappear by
printing approximate 10 pages.

Ye s

If the same problem occurs,
replace the toner cartridge.

Replace the drum unit.

Ye s

Replace the fuser unit.

Ye s

Replace the HVPS PCB

Ye s

ASSY.

Main PCB failure Is the problem solved

7

Paper tray ground terminal.

after replacing the main
PCB ASSY?

Bottom surface
of Paper tray

Fig. 1-6

Replace the main PCB

Ye s

ASSY.

1-28

Confidential

■ White vertical streaks

User Check

• Clean the scanner windows of the laser unit with a soft lint-free cloth.

• Replace the toner cartridge with a new one.

• Check the machine’s environment. High temperature and high
humidity conditions can cause this problem.

• Damp (wet) paper might be used. Try to change to freshly unpacked
paper.

• Check if there is no dust in the gap between the toner cartridge and
drum frame.

Step Cause Check

Condensation Has condensation

1

Transfer failure Is the transfer roller

2

Scanner

3

windows of laser
unit failure

occurred inside the
machine?

scratched?

Is the problem solved
after replacing the laser
unit?

■ White horizontal streaks

User Check

• Check that the appropriate media type is selected in the printer
driver.

• The problem may disappear by itself. Try printing multiple pages to
clear this problem especially if the machine has not been used for a
long time.

• The drum unit may be damaged. Replace the drum unit with a new
one.

Result

Ye s

Ye s

Ye s

Remedy

Try to print several pages
or leave the machine 2
hours to allow it to reach
room temperature.

Replace the drum unit.

Replace the laser unit.

Step Cause Check

Toner cartridge
electrode

1

connection
failure

Are the electrodes on
the toner cartridge and
machine body dirty?

1-29

Result

Ye s

Remedy

Clean both electrodes
(Refer to Fig. 1-1, Fig. 1-2.).

Confidential

■ Faint print

User Check

• Check that the machine is installed on a level surface.

• Replace the toner cartridge with a new one.

• Clean the scanner windows of the toner unit with a soft
cloth.

Step Cause Check

Main PCB failure Is the problem solved

1

Laser unit failure Is the problem solved

2

Toner empty
sensor failure

3

after replacing the main
PCB ASSY?

after replacing the laser
unit?

Is the "Toner Life End"
message indicated on
the LCD after replacing
the current toner
cartridge with a new
one?

■ White spots

User Check

• Toner may be empty. Replace the toner cartridge with a new one.

• If the problem is not solved after printing a few pages, the drum unit
may have glue from label stock on the exposure drum surface. Refer
to the next page, and wipe it off gently with a cotton swab.

• The drum unit may be damaged. Replace the drum unit with a new
one.

Result

Ye s

Ye s

No

Remedy

Replace the main PCB
ASSY.

Replace the laser unit.

Replace the toner sensor
PCB ASSY.

Step Cause Check

Toner attached
on the develop

1

roller

Scratch and Dirt
on the exposure

2

drum

Drum unit

3

connection
failure

HVPS PCB

4

failure

Main PCB failure Is the problem solved

5

Are the horizontal
stripes at 41.0 mm
(develop roller
circumference)
intervals?

Are the horizontal
stripes at 75.0 mm
(exposure drum
circumference)
intervals?

Are the electrodes on
the drum unit and
machine body dirty?

Is the problem solved
after replacing the
HVPS PCB ASSY?

after replacing the main
PCB ASSY?

Result

Ye s

Ye s

Ye s

Ye s

Ye s

Remedy

This problem will
disappear by printing
approximate 10 pages. If
the same problem occurs,
replace the toner cartridge.

Replace the drum unit.

Clean both electrodes
(Refer to Fig. 1-1, Fig. 1-2.)

Replace the HVPS PCB
ASSY.

Replace the main PCB
ASSY.

1-30

Confidential

<Clean the drum unit as follows>

If you have print quality problems, clean the drum unit as follows:

(1) Put the print sample in front of the drum unit, and find the exact position of the poor print.

Fig. 1-7

(2) Turn the drum unit gear to the direction of the arrow of the figure by hand while looking at

the surface of the exposure drum.

Fig. 1-8

(3) When you have found the mark on the drum that matches the print sample, wipe the

surface of the exposure drum with a dry cotton swab until the dust or glue on the surface
comes off.

Fig. 1-9

CAUTION:

DO NOT clean the surface of the photosensitive drum with a sharp object.

1-31

Confidential

■ Black spots

User Check

• Damp (wet) paper might be used. Try to change to freshly unpacked
paper.

• Toner may be empty. Replace the toner cartridge with a new one.

• If the problem is not solved after printing a few pages, the drum unit
may have glue from label stock on the exposure drum surface.
Refer to the previous page, and wipe it off gently with a cotton swab.

• The drum unit may be damaged. Replace the drum unit with a new
one.

Step Cause Check

Toner attached
on the develop

1

roller

Scratch and Dirt
on the exposure

2

drum

Drum unit

3

connection
failure

Scratch and Dirt
on the heat roller

4

HVPS PCB

5

failure

Main PCB failure Is the problem solved

6

Are the horizontal
stripes at 41.0 mm
(develop roller
circumference)
intervals?

Are the horizontal stripes
at 75.0 mm (exposure
drum circumference)
intervals?

Are the electrodes on
the drum unit and
machine body dirty?

Are the horizontal
stripes at 78.5 mm (heat
roller circumference)
intervals?

Is the problem solved
after replacing the
HVPS PCB ASSY?

after replacing the main
PCB ASSY?

Result

Ye s

Ye s

Ye s

Ye s

Ye s

Ye s

Remedy

This problem will
disappear by printing
approximate 10 pages. If
the same problem occurs,
replace the toner cartridge.

Replace the drum unit.

Clean both electrodes
(Refer to Fig. 1-1, Fig. 1-2.)

Replace the fuser unit.

Replace the HVPS PCB
ASSY.

Replace the main PCB
ASSY.

■ Black band

User Check

• Clean the inside of the machine and the corona wire in the drum
unit. If the same problem occurs after cleaning, replace the drum
unit with a new one.

• The paper tray ground terminal provided in the machine body may
be dirty. Clean the contact with a dry cloth.

1-32

Confidential

■ Downward fogging of solid color

User Check

• Toner may be empty. Replace the toner cartridge with a new one.

Step Cause Check

HVPS PCB

1

failure

Main PCB failure Is the problem solved

2

Is the problem solved
after replacing the
HVPS PCB ASSY?

after replacing the main
PCB ASSY?

■ Horizontal lines

User Check

• The paper tray ground terminal provided in the machine

Step Cause Check

Dirt on charged

1

electrode

Paper tray
ground terminal

2

provided in
machine body

Are the electrodes on
the drum unit and
machine body dirty?

Is the paper tray ground
terminal bent, which is
provided in the machine
body?

Result

Replace the HVPS PCB

Ye s

ASSY.

Replace the main PCB

Ye s

ASSY.

body may be dirty. Clean the contact with a dry cloth.

Result

Clean both electrodes

Ye s

(Refer to Fig. 1-1, Fig. 1-2.)

Correct bending of paper
tray ground terminal.

Ye s

Remedy

Remedy

Laser unit failure Is the problem solved

3

after replacing the laser
unit?

Replace the laser unit.

Ye s

1-33

Confidential

■ Ghost

User Check

• Check the machine's environment, conditions such as high or low
humidity may cause this situation to occur.

• Check that the appropriate media type or size is selected in the
printer driver.

• Replace the drum unit with a new one.

Step Cause Check

HVPS PCB

1

failure

Main PCB failure Is the problem solved

2

Is the problem solved
after replacing the
HVPS PCB ASSY?

after replacing the main
PCB ASSY?

■ Fogging

User Check

• Replace the toner cartridge with a new one.

• Replace the drum unit with a new one.

• Do not use acid paper.

• Check if there is dust or paper powder in the machine.

Step Cause Check

Toner sensor
failure (Machine

1

body)

Is the toner sensor
performed normally by
following the procedure
in "Factory Inspection

Mode" (Chapter 5).

Result

Ye s

Ye s

Result

No

Remedy

Replace the HVPS PCB
ASSY.

Replace the main PCB
ASSY.

Remedy

Replace the toner sensor
PCB ASSY.

HVPS PCB

2

failure

Main PCB failure Is the problem solved

3

CAUTION:

This problem often occurs when the drum unit or toner cartridge is nearly at the end of life.

Is the problem solved
after replacing the
HVPS PCB ASSY?

after replacing the main
PCB ASSY?

Replace the HVPS PCB

Ye s

ASSY.

Replace the main PCB

Ye s

ASSY.

1-34

Confidential

5. SOFTWARE SETTING PROBLEMS

The machine may not print the data correctly if there are incorrect software settings.

User Check

• Check that the USB cable and the network cable is not damaged or broken.

• Check that the correct machine is selected if you have an interface switching device.

• Check the descriptions on the software setting in the user’s guide.

• Try resetting the factory settings.

Step Cause Check

Failure inside the
machine

1

Machine
connection

2

Main PCB failure Is the problem solved

3

Does the machine print
“Printer Settings” ?
(Refer to "1.3 Service

Mode" in Chapter 5.)

For Macintosh, has the
product ID been
verified?

after replacing the main
PCB ASSY?

Result

No

No

Ye s

Remedy

Identify the error type, and
then refer to the specified
section of this chapter.

Verify the product
ID.Product ID:
HL-2140: 0033*
HL-2150N: 0034*
HL-2170W: 0035*
* Hexadecimal

Replace the main PCB
ASSY.

1-35

Confidential

6. NETWORK PROBLEMS

User Check

• Check the descriptions in the network user’s guide.

• Try resetting the factory settings.

Step Cause Check

Wireless LAN
PCB failure

1

(HL-2170W)

Main PCB failure Is the problem solved

2

Is the problem solved
after replacing the
wireless LAN PCB
ASSY?

after replacing the main
PCB ASSY?

Result

Ye s

Ye s

Remedy

Replace the wireless LAN
PCB ASSY.

Replace the main PCB
ASSY.

1-36

Confidential

7. OTHERS PROBLEMS

■ The machine is not turned on, or the LED indication does not appear.

Step Cause Check

Harness
connection

1

failure of panel
PCB

Panel PCB

2

failure

LVPS PCB failure Is the problem solved

3

Main PCB failure Is the problem solved

4

Is the harness of the
panel PCB ASSY
connected correctly?

Is the problem solved
after replacing the panel
PCB ASSY?

after replacing the PS
PCB unit?

after replacing the main
PCB ASSY?

■ The fan does not work.

Step Cause Check

Harness
connection

1

failure of the fan
motor 60 ASSY.

Is the harness of the fan
motor 60 ASSY
connected correctly?

Result

No

Ye s

Ye s

Ye s

Result

No

Remedy

Reconnect the panel PCB
ASSY harness.

Replace the panel PCB
ASSY.

Replace the PS PCB unit.

Replace the main PCB
ASSY.

Remedy

Reconnect the harness of
the fan motor 60 ASSY
correctly.

Toner sensor

2

PCB failure

Main PCB failure Is the problem solved

3

Is the problem solved
after replacing the toner
sensor PCB ASSY?

after replacing the main
PCB ASSY?

Replace the toner sensor

Ye s

PCB ASSY.

Replace the main PCB

Ye s

ASSY.

1-37

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CHAPTER 2 PERIODICAL MAINTENANCE

To avoid creating secondary problems by mishandling, follow the warnings below during
maintenance work.

WARNING

• Always turn off the power switch and unplug the power cord from the power outlet
before accessing any parts inside the machine.

• When opening the front cover or back cover to access any parts inside the machine,
never touch the shaded parts shown in the following figures.

1. CONSUMABLE PARTS

The consumable parts described in this section are parts which are subject to deterioration
or damage and should be replaced at least once during the period of warranty of the product
if any printing quality problem appears.

Parts Name Approximate Life

Toner
Cartridge

Drum Unit Approx. 12,000 pages A4/Letter pages (1 page/job)

*1

Approx. cartridge yield is declared in accordance with ISO/IEC 19752. (Letter/A4)

Starter cartridge

Standard cartridge

High yield cartridge

Approx. 1,000 pages A4/Letter pages *

Approx. 1,500 pages A4/Letter pages *

Approx. 2,600 pages A4/Letter pages *

1

1

1

2-1

Confidential

2. PERIODICAL PEPLACEMENT PARTS

There are no parts to be replaced periodically.

2-2

Confidential

CHAPTER 3 DISASSEMBLY AND ASSEMBLY

1. SAFETY PRECAUTIONS

To avoid creating secondary problems by mishandling, follow the warnings and precautions
below during maintenance work.

WARNING

• Always turn off the power switch and unplug the power cord from the power outlet
before accessing any parts inside the machine.

• When opening the front cover or back cover to access any parts inside the machine,
never touch the shaded parts shown in the following figures.

• Be careful not to lose screws, washers, or other parts removed.

• Be sure to apply grease to the gears and applicable positions specified in this chapter.

• When using soldering irons or other heat-generating tools, take care not to accidentally
damage parts such as wires, PCBs and covers.

• Before handling any PCBs, touch a metal portion of the equipment to discharge any static
electricity charge on your body, or the electronic parts or components may be damaged.

• When transporting PCBs, be sure to wrap them in the correct protective packaging.

• When connecting or disconnecting cable connectors, hold the connector body, not the
cables. If the connector has a lock, release the connector lock first to release it.

• After a repair, check not only the repaired portion but also all connectors. Also check that
other related portions are functioning properly before operational checks.

3-1

Confidential

2. PACKING

Set guide

DEMO Insertion

Accessory bag

Pad

USB IF cable

AC cord

Option carton

Pad

Machine

Carton

Fig. 3-1

3-2

Confidential

3. SCREW TORQUE LIST

Location of screw Screw type Q’ty

KEY STOPPER Taptite cup B M3x8 2 0.4±0.05 (4±0.5)

INNER CHUTE ASSY Taptite bind B M4x12 2 0.6±0.1 (6±1)

FUSER UNIT

SIDE COVER R ASSY Taptite bind B M4x12 2 0.8±0.1 (8±1)

CORNER COVER Taptite bind B M4x12 1 0.8±0.1 (8±1)

SIDE COVER L ASSY Taptite bind B M4x12 2 0.8±0.1 (8±1)

MAIN SHIELD COVER PLATE Taptite cup S M3x6 SR

MAIN PCB ASSY Taptite cup S M3x6 SR 4(5)* 0.6±0.1 (6±1)

TOP COVER ASSY Taptite bind B M4x12 2 0.8±0.1 (8±1)

PANEL PCB ASSY Taptite cup B M3x8 1 0.5±0.1 (5±1)

HIGH-VOLTAGE PS PCB ASSY Taptite cup S M3x6 SR 2 0.8±0.05 (8±0.5)

LASER UNIT Taptite cup S M3x6 SR

AIR DUCT Taptite cup S M3x6 SR 2 0.8±0.05 (8±0.5)

LV SHIELD PLATE COVER Screw pan (S/P washer)

SW HOLDER Taptite bind B M4x12 1 0.8±0.1 (8±1)

INLET HARNESS ASSY Screw pan (S/P washer)

PS PCB UNIT Taptite cup S M3x6 SR 2 0.5±0.05 (5±0.5)

LV SHIELD PLATE 2 Taptite bind B M4x12 2 0.8±0.1 (8±1)

ACTUATOR HOLDER ASSY Taptite bind B M3x10 2 0.5±0.1 (5±1)

REGISTRATION FRONT SENSOR
PCB ASSY

REAR ACTUATOR HOLDER ASSY Taptite bind B M3x10 2 0.5±0.1 (5±1)

REGISTRATION REAR SENSOR
PCB ASSY

Taptite pan (washer) B
M4x14

Taptite cup S M3x6 SR

Taptite bind B M4x12 2 0.8±0.05 (8±0.5)

4(2)*

Taptite pan (S/P washer) S
M3x8 0(2)*

M3.5x6

Taptite cup S M3x6 SR 2 0.5±0.05 (5±0.5)

M3.5x6

Taptite flat B M3x10 2

Taptite cup S M3x6 SR

Taptite cup S M3x6 SR

Taptite bind B M3x10

Taptite bind B M3x10

Tightening torque

N m (kgf · cm)

20.8±0.1 (8±1)

0.5±0.05 (5±0.5)

2

Left side

0.8±0.05 (8±0.5)

1

Right side

0.8±0.05 (8±0.5)
Left side of Main
frame

0.8±0.05 (8±0.5)
Right side of Main
frame

10.5±0.05 (5±0.5)

10.5±0.05 (5±0.5)

0.45±0.05 (4.5±0.5)

0.6±0.1 (6±1)

1

Back Side

0.5±0.05 (5±0.5)

1

Front chute
ground plate side

10.5±0.1 (5±1)

10.5±0.1 (5±1)

3-3

Confidential

Location of screw Screw type Q’ty

Tightening torque

N m (kgf · cm)

UNDER FG WIRE Taptite bind B M4x12 1 0.8±0.1 (8±1)

Taptite cup S M3x6 SR 1 0.8±0.05 (8±0.5)

DRIVE SUB ASSY Taptite cup S M3x6 SR 1 0.6±0.1 (6±1)

Taptite bind B M4x12 9 0.8±0.1 (8±1)

NEW TONER SENSOR HARNESS
ASSY

Taptite bind B M3x10

10.5±0.1 (5±1)

REGISTRATION SOLENOID Taptite bind B M3x10 1 0.5±0.1 (5±1)

T1 SOLENOID Taptite bind B M3x10 1 0.5±0.1 (5±1)

FU FRONT PLATE GUIDE Taptite bind B M3x10 3 0.5±0.1 (5±1)

CHUTE GROUND PLATE Taptite cup S M3x6 SR 2 0.6±0.1 (6±1)

MAIN SHIELD PLATE Taptite bind B M4x12 3 0.8±0.1 (8±1)

MAIN FRAME L ASSY Taptite bind B M4x12 4 0.8±0.1 (8±1)

Taptite cup S M3x6 SR 2 0.7±0.1 (7±1)

* The parenthesis shows the number of screws for HL-2150N/2170W.

3-4

Confidential

4. LUBRICATION

The kind of the lubricating oil

(Maker name)

BG-MU
(Kanto Kasei)

MOLYKOTE EM-D110
(Dow Corning Toray)

BG2

2 places

Lubrication point Quantity of labrication

Dev gear joint/53R
Drive sub ASSY

2mm dia. ball

BG2

Drum gear 25L/139L

Separation pad ASSY 2mm dia. ball

EM2

BG2

4 places

DEV gear
joint / 53R

BG2

2 places

BG2

4 places

BG2

24 places

Paper tray unit

Drive sub ASSY

Separation pad ASSY

EM2

4 places

CAUTION:

Be careful not to let lubricants touch the
opposite side of the Separation pad ASSY.

3-5

Confidential

5. OVERVIEW OF GEARS

EJECTOR GEAR 15/25

(LU2018001)

EJECTOR GEAR 17

(LU2016001)

FUSER GEAR 22/37

EJECTOR GEAR 26

(LU2017001)

2

2

1

1

3

3

4

4

DEV GEAR 17/18R/47R

(LU2053001)

(LU2015001)

REGISTRATION GEAR

27 PENDULUM

(LU2048001)

DEV GEAR 17/33L

(LU2054001)

REGISTRATION GEAR 19

(LU2047001)

REGISTRATION DIFFERENTIAL

GEAR ASSY

(LU2049001)

FEEDER GEAR 17/22

(LU2043001)

FEEDER GEAR 26/20

11

8

8

6

6

7

7

5

5

9

9

11

14

14

15

10

10

15

12

12

13

13

P/P GEAR 29 SECTOR

(LU2045001)

T1 GEAR 38/31 SECTOR

(LU2042001)

17

17

16

16

(LU2044001)

Fig. 3-2

CAUTION:

The part codes of gears are subject to change without notice.

( ) is part code.

3-6

Confidential

6. HARNESS ROUTING

1 FUSER UNIT

Eject sensor PCB ASSY

PS PCB unit

2 FG HARNESS

Fuser unit

Laser unit

<Back side>

Main PCB ASSY

3-7

FG harness

<Left side>

Confidential

3 MAIN FRAME R ASSY

Front cover senser

4

Wireless LAN PCB ASSY (only HL-2170W) / Toner LED PCB ASSY / PS PCB unit / Main PCB ASSY

Toner LED PCB ASSY Fan motor 60 unit

PS PCB unit SW holder Inlet harness ASSY

Wireless LAN PCB ASSY

(only HL-2170W)

Main PCB ASSY
(Main Frame L ASSY)

<Back side>

<Right side>

Toner LED PCB ASSY

3-8

PS PCB unit

Confidential

5

TONER LED PCB ASSY / REGISTRATION FRONT SENSOR PCB ASSY / REGISTRATION REAR SENSOR PCB ASSY

Toner LED PCB ASSY

<Front side>

<Right side>

Registration rear sensor PCB ASSY

Registration front sensor PCB ASSY

6

PANEL PCB ASSY / TONER SENSOR PCB UNIT ASSY / NEW TONER SENSOR HARNESS ASSY

<Left side>

Panel PCB ASSY

<Front side>

New toner sensor
harness ASSY

3-9

Toner sensor PCB unit ASSY

Confidential

7 HIGH-VOLTAGE PS PCB / REGISTRATION SOLENOID / T1 SOLENOID

<Left side>

<Bottom side><Bottom side>

Drive sub ASSY

<Bottom side>

Registration solenoid

High-voltage PS PCB ASSY

<Front side>

T1 solenoid

<Left side>

T1 solenoidRegistration solenoid

3-10

Confidential

7. DISASSEMBLY FLOW

FRONT COVER
ASSY / SW KEY

15s/15s

ROLLER HOLDER

ASSY

15s/15s

FAN MOTOR 60

UNIT

10s/10s

COVER SENSOR

HARNESS ASSY

10s/10s

TONER LED

PCB ASSY

/ LED HOLDER

10s/10s

WIRELESS LAN

PCB

ASSY

10s/10s

PS PCB UNIT

(LVPS)

40s/40s

SIDE CO VER R

ASSY

20s/20s

INNER CHUTE

ASSY

10s/10s 5s/5s

FUSER UNIT

30s/30s

CORNER

COVER

15s/15s

SIDE CO VER L

ASSY

20s/20s

TOP COVER

ASSY

20s/20s

PAPER STACK

LEVER

BACK COVER

OUTER

CHUTE ASSY

5s/5s

FUSER COVER

ASSY

5s/5s

EJECT ACTUATOR
SPRING / EJECT

ACTUATOR

5s/10s

EJECT ROLLER

ASSY 2

10s/10s

BUSH R /

BUSH L

5s/5s10s/10s

RUBBER FOOT

5s/5s

SEPARATION PAD

ASSY / SEPARATION

PAD SPRING

10s/15s

EJECT ROLLER

ASSY 1 / BUSH

20s/20s

SW

SUPPORTER

10s/10s

PANEL PCB

ASSY

15s/15s

LV SHIELD

PLATE 2

20s/20s

REGISTRATION

FRONT SENSOR

PCB ASSY

REGISTRATION

REAR SENSOR

PCB ASSY

15s/15s15s/15s

FILTER ASSY

LASER UNIT

MAIN FRAME

SUPPORT FLAP 1 /

SUPPORT FLAP 2

15s/15s

HIGH-VOLTAGE

5s/5s

35s/35s 10s/10s

PS PCB ASSY

25s/30s 20s/30s

TONER SENSOR

PCB UNIT ASSY

L ASSY

MAIN SHIELD

COVER PLATE

10s/10s

MAIN PCB A SSY

DRIVE SUB

ASSY

40s/40s

DEV JOINT

5s/5s 20s/20s

DEV GEAR

JOINT / 53R

REGISTRATION

SOL ENOI D

T1 SOLENOID

15s/20s10s/10s

NEW TONER

SENSO R

HARNESS ASSY

10s/10s

MAIN SHIELD PLATE /
EJECT SENSOR PCB ASSY

35s/35s

Fig. 3-3

3-11

Confidential

8. DISASSEMBLY PROCEDURE

8.1 PAPER TRAY UNIT / SEPARATION PAD ASSY

(1) Pull out the Paper tray unit from the Main body.

(2) Lift up the Separation pad ASSY.

(3) Release the Boss to remove the Separation pad ASSY from the Paper tray unit.

(4) Remove the Separation pad spring from the Paper tray unit.

Separation pad spring

4

1

3b

Separation pad ASSY

2

3a 3a

Paper tray unit

Boss

Paper tray unit

Fig. 3-4

3-12

Confidential

8.2 FRONT COVER ASSY / SW KEY

8.2.1 FRONT COVER ASSY

(1) Open the Front cover ASSY.

(2) Release the Hook to remove the DEV joint link from the Front cover ASSY.

DEV joint link

Fig. 3-5

1

Front cover ASSY

Hook

2

3-13

Confidential

(3) Release the Hook of the Front cover ASSY from the Front cover top.

(4) Remove the Boss of the Front chute ASSY, and then remove the Front cover ASSY from

the Main body.

Boss

(Front chute ASSY)

Front chute ASSY

Front cover top

3a

Hook

4a

Boss

(Front chute ASSY)

3b

4b

Front cover ASSY

4a

Front cover top

Front chute ASSY

Boss

Front cover ASSY

Fig. 3-6

3-14

Confidential

8.2.2 SW KEY

(1) Remove the two Taptite cup B M3x8 screws, and then remove the Key stopper from the

Front cover ASSY.

(2) Remove the SW key from the Front cover ASSY.

Taptite cup B M3x8

Key stopper

1

Screw installation part

SW Key

2

Front cover ASSY

Boss

Fig. 3-7

CAUTION:

When operate while having the screw installation part of the SW key, be careful not to
damage it.

3-15

Confidential

Assembling Note:

When operate while having the Screw installation part of the SW key, be careful not to
damage it.

Screw installation part

SW key

Fig. 3-8

b

a

Hook

Front cover ASSY

3-16

Confidential

8.3 BACK COVER / OUTER CHUTE ASSY

8.3.1 BACK COVER

(1) Open the Back cover.

(2) Release the Boss of the Outer chute ASSY from the Back cover.

(3) Release the Hook from the Side cover R ASSY.

(4) Slide the Back cover from the Main body, and remove it.

1

Boss

Outer chute ASSY

Boss

Side cover R ASSY

3

Boss

Hook

Boss

4

Back cover

Outer chute ASSY

2

Back cover

2

Back cover

Fig. 3-9

3-17

Confidential

8.3.2 OUTER CHUTE ASSY

(1) Release the Boss to remove the Outer chute ASSY from the Main body.

Boss (Fuser cover assy)

1a

Boss (Fuser cover ASSY)

Outer chute ASSY

1a1a

Fig. 3-10

1b

Outer chute ASSY

Outer chute ASSY

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Confidential

8.4 FUSER COVER ASSY

8.4.1 FUSER COVER ASSY

(1) Take down the Fuser cover ASSY.

(2) Remove the Fuser cover ASSY from the Main body.

Fuser cover ASSY

Boss

Fuser cover ASSY

2

1

2

Fig. 3-11

2

Boss

3-19

Confidential

8.4.2 EJECT ACTUATOR / EJECT ACTUATOR SPRING

(1) Release the Hook to slide the Eject actuator, and then remove the Eject actuator from

the Fuser cover ASSY.

(2) Remove the Eject actuator spring from the Eject actuator.

Eject actuator

Eject actuator

Hook

Fuser cover ASSY

Eject actuator spring

1a1a

2

1a

1a

1c

1b

1b

1b

Eject actuator

Fig. 3-12

3-20

Confidential

8.4.3 EJECT ROLLER ASSY 1 / BUSH C / BUSH R / BUSH L

(1) Release the Hook of the Bush C from the Fuser cover ASSY.

(2) Remove the Eject roller ASSY 1 from the Fuser cover ASSY.

Eject roller ASSY 1

Hook

Bush C

Fuser cover ASSYBoss Boss

Fig. 3-13

(3) Remove the Bush C, the Bush R and the Bush L from the Eject roller ASSY 1.

Bush C

Bush R

Bush L

Eject roller ASSY 1

Fig. 3-14

3-21

Confidential

8.5 INNER CHUTE ASSY

(1) Remove the two Taptite bind B M4x12 screws, and then remove the Inner chute ASSY

from Main body.

Inner chute ASSY

Fig. 3-15

Taptite bind B M4x12

3-22

Confidential

8.6 FUSER UNIT

(1) Disconnect the Connector.

Housing part

Connector

Fuser unit

Fig. 3-16

CAUTION:

Pull out the Connector from the Housing part of the Main body left side.

(2) Disconnect the two Connectors from the Eject sensor PCB ASSY.

Fuser unit

Connector

Fig. 3-17

3-23

Eject sensor PCB ASSY

Confidential

(3) Remove the two Taptite pan (washer) B M4x14 screws, and then remove the Fuser unit

from the Main body.

Fuser unit

Fig. 3-18

Taptite pan (washer) B M4x14

3-24

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8.7 SIDE COVER R ASSY

(1) Remove the two Taptite bind B M4x12 screws.

(2) Release the Hook to remove the Side cover R ASSY from the Main body.

Side cover R ASSY

Taptite bind B M4x12

Hook

Taptite bind B M4x12

Hook

Hook

Fig. 3-19

3-25

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8.8 CORNER COVER

(1) Remove the Taptite bind B M4x12 screw.

(2) Release the Hook to remove the Corner cover from the Main body.

Hook

Corner cover

Fig. 3-20

3-26

Taptite bind B M4x12

Confidential

8.9 SIDE COVER L ASSY

(1) Remove the two Taptite bind B M4x12 screws.

(2) Release the Hook to remove Side cover L ASSY from the Main body.

Taptite bind B M4x12

Hook

Hook

Taptite bind B M4x12

Hook

Side cover L ASSY

Fig. 3-21

3-27

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8.10 ROLLER HOLDER ASSY

1a

1b

2b

2b

2a

(1) Release the Boss of the Roller holder ASSY from the Link arm.

(2) Press the Rib of the Paper feed frame, and the slide the Separation R shaft bush.

(3) Remove the Roller holder ASSY from the Main body.

Roller holder ASSY

3

<Bottom side>

Paper feed frame ASSY

Boss

1b

Roller holder ASSY

Link arm

2b

1a

2a

2b

Rib
(Paper feed frame
ASSY)

Separation R shaft bush

Fig. 3-22

3-28

Confidential

Assembling Note:

b

When assembling the Roller holder ASSY to the Main body, note the assembling method
referring to the figure below.

b

Separation R shaft bush

a

Rib

Groove

Bush 6

Fig. 3-23

CAUTION:

When the Separation R shaft bush does not slide, put the Rib of the Bush 6 while
aligning the Groove of the Main body shaft hole from the Main frame L ASSY side.

3-29

Confidential

8.11 WIRELESS LAN PCB ASSY (only HL-2170W)

1a

1a

(1) Disconnect the Connector from the Wireless LAN PCB ASSY.

(2) Release the Hook to remove the Wireless LAN PCB ASSY from the Main body.

Hook

Connector

1

Hook

2a

Wireless LAN PCB ASSY

Fig. 3-24

3-30

2b

Wireless LAN PCB ASSY

Confidential

8.12 MAIN SHIELD COVER PLATE

(1) Remove the three Taptite cup S M3x6 SR screws, and then remove the Main shield

cover plate from the Main body.

Taptite cup S M3x6 SR

Taptite cup S M3x6 SR

Main shield cover plate

Fig. 3-25

3-31

Confidential

8.13 MAIN PCB ASSY

(1) Disconnect the six FFCs and the three Connectors from the Main PCB ASSY.

(2) Remove the four Taptite cup S M3x6 SR screws, and then remove the FG harness

ASSY and Main PCB ASSY from the Main body.

Memo :

The five Taptite cup S M3x6 SR screws. (HL-2150N/2170W only)

FG harness ASSY

Main PCB ASSY

Taptite cup S M3x6 SR

Taptite cup S M3x6 SR

Taptite cup S M3x6 SR

(Only HL-2150N/2170W)

FFC

Main PCB ASSY

Connector

FFC

FFC

Connector

Fig. 3-26

Assembling Note:

If the FG harness ASSY which comes from the Laser unit is not connected, the Laser unit
break down.

3-32

Confidential

8.14 TOP COVER ASSY

8.14.1 TOP COVER ASSY

(1) Remove the two Taptite bind B M4x12 screws.

(2) Release the Hook to remove the Top cover ASSY from the Main body.

Top cover ASSY

Hook

Hook

2a

2b

Hook

Taptite bind B M4x12

Fig. 3-27

3-33

Confidential

8.14.2 PAPER STACK LEVER

(1) Release the Boss to remove the two Paper stack levers from the Top cover ASSY.

Paper stack lever

Boss

1a 1a

Paper stack lever

Top cover ASSY

Paper stack lever

1b

1b

Fig. 3-28

3-34

Confidential

8.14.3 SUPPORT FLAP 1 / SUPPORT FLAP 2

(1) Release the Boss to remove the Support flap 1 from the Main body.

(2) Release the Boss to remove the Support flap 2 from the Main body.

Support flap 2

2a 2a

Boss

Top cover ASSY

Fig. 3-29

2b

1b

Support flap 1

1a 1a

Boss

3-35

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8.14.4 EJECT ROLLER ASSY 2 / BUSH R / BUSH L

1

(1) Remove the Eject roller ASSY 2 from the Top cover ASSY.

(2) Remove the Bush R and the Bush L from the Eject roller ASSY 2.

2b

Bush R

2a

1

2b

Bush L

Eject roller ASSY 2

Top cover ASSY

Fig. 3-30

3-36

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8.15 SW SUPPORTER

(1) Release the Hook to remove the SW supporter from the Main body.

Panel PCB ASSY

Fig. 3-31

1a

Hook

SW
supporter

1a

Rib

1b

Hole

3-37

Confidential

8.16 PANEL PCB ASSY

(1) Remove the Panel film.

(2) Remove the Taptite cup B M3x8 screw.

(3) Remove the Panel PCB ASSY from the Main body.

(4) Disconnect the two connectors from the Panel PCB ASSY.

Taptite cup B M3x8

Connector

Fig. 3-32

Panel film

4

3

1

Panel PCB ASSY

3-38

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8.17 HIGH-VOLTAGE PS PCB ASSY

(1) Disconnect the two connectors from the High-voltage PS PCB ASSY.

(2) Remove the two Taptite cup S M3x6 SR screws and the two Taptite bind B M4x12

screws.

(3) Release the Hook to remove High-voltage PS PCB ASSY from the Drive sub ASSY.

Taptite bind B M4x12

Hook

3

1

Taptite cup S M3x6 SR

Connector

High-voltage PS PCB ASSY

Fig. 3-33

Drive sub ASSY

Note:

There are procedures for disassembling Main frame L ASSY after this procedure.
(8.31 MAIN FRAME L ASSY)

3-39

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8.18 NEW TONER SENSOR HARNESS ASSY

(1) Release the Hook to remove the New toner sensor harness ASSY from the Main body.

1b

New toner sensor harness ASSY

1a 1a

Hook

New toner sensor harness ASSY

Fig. 3-34

CAUTION:

Be careful not to damage the Hook of the New toner sensor harness ASSY.

3-40

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8.19 FILTER ASSY

(1) Remove the Filter ASSY from the Main body.

Filter ASSY

Fig. 3-35

3-41

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8.20 LASER UNIT

(1) Remove the four Taptite cup S M3x6 SR screws, and then remove the Laser unit from

the Main body.

Memo :

• The two Taptite cup S M3x6 SR screws and the two Taptite pan (S/P washer) S M3x8
screws. (HL-2150N/2170W only)

• Remove the Laser unit in the state that the DEV joint link is pulled out.

Laser unit

Taptite cup S M3x6 SR

DEV joint link

Fig. 3-36

3-42

Taptite cup S M3x6 SR

Taptite pan (S/P washer) S M3x8
(HL-2150N/2170W only)

Confidential

)(

(2) Remove the Taptite cup S M3x6 SR screw, and then remove the FG harness ASSY from

the Laser unit.

(3) Remove the Taptite cup S M3x6 SR screw, and then remove the Air duct from the Laser

unit.

Taptite cup S M3x6 SR

Air duct

2

3

FG harness ASSY

Laser unit

Fig. 3-37

CAUTION:

When replacing the Laser unit, replace the Serial label attached on the Drive sub ASSY
with a new one supplied with a new unit. Another Serial label supplied with a new unit is
spare. Make sure to throw it out. When replacing the Laser unit, it is necessary to input
the characteristics information.
(Refer to "3. IF YOU REPLACE THE LASER UNIT" in Chapter 4.)

Serial label

Drive sub ASSY

2 to 10mm

Drive sub ASSY

Serial label

Fig. 3-38

3-43

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8.21 FAN MOTOR 60 UNIT / COVER SENSOR HARNESS ASSY / TONER LED PCB ASSY

8.21.1 FAN MOTOR 60 UNIT

(1) Disconnect the Connector from the Toner LED PCB ASSY.

(2) Remove the Fan motor 60 unit from the Main body.

Toner LED PCB ASSY

1

2

Connector

Fan motor 60 unit

Fig. 3-39

3-44

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8.21.2 COVER SENSOR HARNESS ASSY

(1) Disconnect the Connector from the Toner LED PCB ASSY.

(2) Release the Hook to remove the Cover sensor harness ASSY from the Main body.

Cover sensor harness ASSY

Hook

2a

Connector

2a

1a

Cover sensor harness ASSY

2b

Toner LED PCB ASSY

Fig. 3-40

CAUTION:

When removing the Cover sensor harness ASSY, remove it as shown in the direction of
the allow 2b. Be careful not to damage the Hook.

3-45

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8.21.3 TONER LED PCB ASSY

1a

1

1

1

(1) Disconnect the three connectors from the Toner LED PCB ASSY.

(2) Release the Hook to remove the Toner LED PCB ASSY from the Main body.

Connector

Connector

2a

1

Hook

2b

Toner LED PCB ASSY

1

1

2a

Fig. 3-41

3-46

Confidential