Samsung SCX-4100 All in One Printer Service manual

DIGITAL LASER MFP

SCX-4100

SERVICE Manual

DIGITAL LASER MFP CONTENTS

1.

Precautions

3.

Specifications

4.

Summary of product

5. Disassembly and Reassembly

7.

Troubleshooting

8.

Exploded Views and Parts List

9.

Block Diagram

10. Connection Diagram

This service manual is also provided on the web, the ITSELF system f Samsung Electronics Co., Ltd.

http://itself.sec.samsung.co.kr

© Samsung Electronics Co.,Ltd. May 2004

Printed in Korea.

VERSION NO. : 1.00 CODE : JC-0125A

1

1. Precautions

In order to prevent accidents and to prevent damage to the equipment please read the precautions listed below carefully before servicing the printer and follow them closely.

1.1 Safety Warning

(1) Only to be serviced by appropriately qualified service engineers.

High voltages and lasers inside this product are dangerous. This printer should only be serviced by a suitably trained and qualified service engineer.

Precautions

(2) Use only Samsung replacement parts

There are no user serviceable parts inside the printer. Do not make any unauthorized changes or additions to the printer, these could cause the printer to malfunction and create electric shock or fire haz-ards.

(3) Laser Safety Statement

The Printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR, chapter 1 Subchapter J for

Class 1(1) laser products, and elsewhere, it is certified as a Class I laser product con-forming to the requirements of IEC 825. Class I laser products are not considered to be hazardous. The laser system and printer are designed so there is never any human access to laser radiation above a Class I level during normal operation, user maintenance, or prescribed service condition.

Warning >> Never operate or service the printer with the protective cover removed from Laser/Scanner assembly. The reflected beam, although invisible, can damage your eyes. When using this product, these basic safety pre-cautions should always be followed to reduce risk of fire, electric shock, and injury to persons.

CAUTION - INVISIBLE LASER RADIATION

WHEN THIS COVER OPEN.

DO NOT OPEN THIS COVER.

VORSICHT - UNSICHTBARE LASERSTRAHLUNG,

WENN ABDECKUNG GE FFNET.

NICHT DEM STRAHL AUSSETZEN.

ATTENTION - RAYONNEMENT LASER INVISIBLE EN CAS

D OUVERTURE. EXPOSITION DANGEREUSE

AU FAISCEAU.

ATTENZIONE - RADIAZIONE LASER INVISIBILE IN CASO DI

APERTURA. EVITARE L ESPOSIZIONE AL

FASCIO.

PRECAUCION - RADIACION LASER IVISIBLE CUANDO SE ABRE.

EVITAR EXPONERSE AL RAYO.

ADVARSEL. - USYNLIG LASERSTR LNING VED BNING, N R

SIKKERHEDSBRYDERE ER UDE AF FUNKTION.

UNDG UDSAETTELSE FOR STR LNING.

ADVARSEL. - USYNLIG LASERSTR LNING N R DEKSEL

PNES. STIRR IKKE INN I STR LEN.

UNNG EKSPONERING FOR STR LEN.

VARNING - OSYNLIG LASERSTR LNING N R DENNA DEL

R PPNAD OCH SP RREN R URKOPPLAD.

BETRAKTA EJ STR LEN. STR LEN R FARLIG.

VARO! - AVATTAESSA JA SUOJALUKITUS OHITETTAESSA

OLET ALTTIINA N KYM TT M LLE LASER-

S TEILYLLE L KATSO S TEESEEN.

Service Manual

1-1

Precautions

1.2 Caution for safety

1.2.1 Toxic material

This product contains toxic materials that could cause illness if ingested.

(1) If the LCD control panel is damaged it is possible for the liquid inside to leak. This liquid is toxic. Contact with the skin should be avoided, wash any splashes from eyes or skin immediately and contact your doctor. If the liquid gets into the mouth or is swallowed see a doctor immediately.

(2) Please keep toner cartridges away from children. The toner powder contained in the toner cartridge may be harmful and if swallowed you should contact a doctor.

1.2.2 Electric Shock and Fire Safety Precautions

Failure to follow the following instructions could cause electric shock or potentially cause a fire.

(1) Use only the correct voltage, failure to do so could damage the printer and potentially cause a fire cause an electric shock.

(2) Use only the power cable supplied with the printer. Use of an incorrectly specified cable could cause the cable to overheat and potentially cause a fire.

(3) Do not overload the power socket, this could lead to overheating of the cables inside the wall and could lead to a fire.

(4) Do not allow water or other liquids to spill into the printer, this can cause electric shock. Do not allow paper clips, pins or other foreign objects to fall into the printer these could cause a short circuit leading to an electric shock or fire hazard..

(5) Never touch the plugs on either end of the power cable with wet hands, this can cause electric shock. When servicing the printer remove the power plug from the wall socket.

(6) Use caution when inserting or taking off the power plug. The power plug has to be inserted completely. If not, a fire will be caused due to poor contact. When taking off the power plug, grip the plug and remove it.

(7) Take care of the power cable. Do not allow it to become twisted, bent sharply round corners or other wise damaged. Do not place objects on top of the power cable. If the power cable is damaged it could overheat and cause a fire or exposed cables could cause an electric shock. Replace a damaged power cable immediately, do not reuse or repair the damaged cable. Some chemicals can attack the coating on the power cable, weakening the cover or exposing cables causing fire and shock risks.

(8) Ensure that the power sockets and plugs are not cracked or broken in any way. Any such defects should be repaired immediately. Take care not to cut or damage the power cable or plugs when moving the machine.

(9) Use caution during thunder or lightening storms. Samsung recommend that this machine be disconnected from the power source when such weather conditions are expected. Do not touch the machine or the power cord if it is still connected to the wall socket in these weather conditions.

(10) Avoid damp or dusty areas, install the printer in a clean well ventilated location. Do not position the machine near a humidifier. Damp and dust build up inside the machine can lead to overheating and cause a fire.

(11) Do not position the printer in direct sunlight. This will cause the temperature inside the printer to rise possibly leading to the printer failing to work properly and in extreme conditions could lead to a fire.

(12) Do not insert any metal objects into the machine through the ventilator fan or other part of the casing, it could make contact with a high voltage conductor inside the machine and cause an electric shock.

1-2


Precautions

1.2.3 Handling Precautions

The following instructions are for your own personal safety, to avoid injury and so as not to damage the printer

(1) Ensure the printer is installed on a level surface, capable of supporting its weight. Failure to do so could cause the printer to tip or fall.

(2) printer contains many rollers, gears and fans. Take great care to ensure that you do not catch your fingers, hair or clothing in any of these rotating devices.

(3) Do not place any small metal objects, containers of water, chemicals or other liquids close to the printer which if spilled could get into the machine and cause damage or a shock or fire hazard.

(4) Do not install the machine in areas with high dust or moisture levels, beside on open window or close to a humidifier or heater. Damage could be cause to the printer in such areas.

(5) Do not place candles, burning cigarettes, etc on the printer, These could cause a fire.

1.2.4 Assembly / Disassembly Precautions

Replace parts carefully, always use Samsung parts. Take care to note the exact location of parts and also cable routing before dismantling any part of the machine. Ensure all parts and cables are replaced correctly.

Please carry out the following procedures before dismantling the printer or replacing any parts.

(1) Check the contents of the machine memory and make a note of any user settings. These will be erased if the mainboard or network card is replaced.

(2) Ensure that power is disconnected before servicing or replacing any electrical parts.

(3) Disconnect printer interface cables and power cables.

(4) Only use approved spare parts. Ensure that part number, product name, any voltage, current or temperature rating are correct.

(5) When removing or re-fitting any parts do not use excessive force, especially when fitting screws into plastic.

(6) Take care not to drop any small parts into the machine.

(7) Handling of the Toner Cartridge

- The OPC Drum can be irreparably damaged if it exposed to light.

Take care not to expose the OPC Drum either to direct sunlight or to fluorescent or incandescent room lighting. Exposure for as little as 5 mins can damage the surface’s photoconductive properties and will result in print quality degradation. Take extra care when servicing the printer. Remove the OPC Drum and store it in a black bag or other lightproof container. Take care when working with the covers(especially the top cover) open as light is admitted to the OPC area and can damage the OPC Drum.

- Take care not to scratch the green surface of OPC Drum Unit.

If the green surface of the Drum Cartridge is scratched or touched the print quality will be compromised.


1-3

Precautions

1.2.5 Disregarding this warning may cause bodily injury

(1) Be careful with the high temperature part.

The fuser unit works at a high temperature. Use caution when working on the printer. Wait for the fuser to cool down before disassembly.

(2) Do not put finger or hair into the rotating parts.

Take care when using a printer. It contains many rotating parts. Ensure that fingers, hair, clothing etc. do not become caught in the mechanism as this could cause injury.

(3) When you move the printer.

This printer weighs 8.8kg including toner cartridge and cassette. Use safe lifting and handling techniques. Use the lifting handles located on each side of the machine. Back injury could be caused if you do not lift carefully.

(4) Ensure the printer is installed safely.

The printer weighs 8.8Kg, ensure the printer is installed on a level surface, capable of supporting its weight.

Failure to do so could cause the printer to tip or fall possibly causing personal injury or damaging the printer.

(5) Do not install the printer on a sloping or unstable surface. After installation, double check that the printer is stable.

1-4


Precautions

1.3 ESD Precautions

Certain semiconductor devices can be easily damaged by static electricity. Such components are commonly called

“Electrostatically Sensitive (ES) Devices”, or ESDs. Examples of typical ESDs are: integrated circuits, some field effect transistors, and semiconductor “chip” components.

The techniques outlined below should be followed to help reduce the incidence of component damage caused by static electricity.

Caution >>Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

1. Immediately before handling a semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, employ a commercially available wrist strap device, which should be removed for your personal safety reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ESDs, place the assembly on a conductive surface, such as aluminum or copper foil, or conductive foam, to prevent electrostatic charge buildup in the vicinity of the assembly.

3. Use only a grounded tip soldering iron to solder or desolder ESDs.

4. Use only an “anti-static” solder removal device. Some solder removal devices not classified as “anti-static” can generate electrical charges sufficient to damage ESDs.

5. Do not use Freon-propelled chemicals. When sprayed, these can generate electrical charges sufficient to damage ESDs.

6. Do not remove a replacement ESD from its protective packaging until immediately before installing it. Most replacement ESDs are packaged with all leads shorted together by conductive foam, aluminum foil, or a comparable conductive material.

7. Immediately before removing the protective shorting material from the leads of a replacement ESD, touch the protective material to the chassis or circuit assembly into which the device will be installed.

8. Maintain continuous electrical contact between the ESD and the assembly into which it will be installed, until completely plugged or soldered into the circuit.

9. Minimize bodily motions when handling unpackaged replacement ESDs. Normal motions, such as the brushing together of clothing fabric and lifting one’s foot from a carpeted floor, can generate static electricity sufficient to damage an ESD.


1-5

1

Reference Information

2

2. Reference Information

This chapter contains the tools list, list of abbreviations used in this manual, and a guide to the location space required when installing the printer. A definition of tests pages is also included.

2.1 Tool for Troubleshooting

The following tools are recommended for safe and smooth troubleshooting described in this service manual.

5 DVM(Digital Volt Meter)

Standard: Indicates more than 3 digits.

Cleaning Equipments

Standard : An IPA(Isopropyl Alcohol)dry wipe tissue or a gentle neutral detergent and lint-free cloth.

2 Driver

Standard : "-" type, "+" type (M3 long, M3 short, M2 long, M2 short).

6 Vacuum Cleaner

7 Spring Hook

Standard : For general use

3 Tweezers

Standard : For general home use, small type.

4

Cotton Swab

Standard : For general home use, for medical service.

8 Software(Driver) installation CD ROM


2-1

Samsung Electronics


2.2 Acronyms and Abbreviations

The table in the below explains abbreviations used in this service manual.

The contents of this service manual are declared with abbreviations in many parts. Please refer to the table.

dBA dBm

DC

DCU

CN

CON

CPU dB

DIMM

DPI

DRAM

DVM

ECP

ECU

EEPROM

ADC

AP

AC

ASIC

ASSY

BIOS

BLDC Motor

CIS

CMOS

EMI

EP

EPP

Analog-to-Digital-Conversion

Access Point

Alternating Current

Application Specific Integrated Circuit

Assembly

Basic Input Output System

Brushless DC Motor

Contact Image Sensor

Complementary Metal Oxide

Semiconductor

Connector

Connector

Central Processing Unit

Decibel

A-Weighted decibel

Decibel milliwatt

Direct Current

Diagnostic Control Unit

Dual In-line Memory Module

Dot Per Inch

Dynamic Random Access Memory

Digital Voltmeter

Enhanced Capability Port

Engine Control Unit

Electronically Erasable

Programmable Read Only Memory

Electro Magnetic Interference

Electro photographic

Enhanced Parallel Port

I/F

I/O lb

IC

ICC

IDE

FISO

FPOT

GDI

GIF

GND

HBP

HDD

HTML

HV

HVPS

FCOT

FFC

LAN

LBP

EPP

F/W

FCF/FCT

IEEE

IOT

IPA

First Copy Out Time

FLexiable FLat Cable local area network

Laser Beam Printer

Enhanced Parallel Port

Firmware

First Cassette Feeder/First

Cassette Tray

Front-In, Side-Out

First Print out Time

Windows Graphic Device Interface

Graphic Interchange Format

Ground

Host Based Printing

Hard Disk Drive

Hyper Text Transfer Protocol

High Voltage

High Voltage Power Supply

Interface

Input and Output

Pound(s)

Integrated Circuit

International Color Consortium

Intelligent Drive Electronics or

Integrated Drive Electronics

Institute of Electrical and

Electronics Engineers. Inc

Image Output Terminal (Color printer, Copier)

Isopropy Alcohol

2-2


Samsung Electronics


PDF

PDL

Ping

PPD

PPM

PS

PTL

PWM

Q’ty

QCD

OPC

PBA

PCL

PCI

IPC

IPM

LCD

LED

LSU

MB

MFP

MHz

MPBF

MPF/MPT

NIC

NPC

NVRAM

Inter Process Communication

Images Per Minute

Liquid Crystal Display

Light Emitting Diode

Laser Scanning Unit

Megabyte

Multi-Functional Product

Megahertz

Mean Prints Between Failure

Multi Purpose Feeder/Multi

Purpose Tray

Network Interface Card

Network Printer Card

Nonvolatile Random Access

Memory

Organic Photo Conductor

Printed Board Assembly

Printer Command Language ,

Printer Control Language

Peripheral Component

Interconnect by Intel 1992/6/22, is a local bus standard developed by

Intel and introduced in April, 1993 :

A60, B60 Pins

Portable Document Format

Page Description Language

Packet internet or Inter-Network

Groper

Postscript Printer Discription

Page Per Minute

Post Script

Pre-Transfer Lamp

Pulse Width Moduration

Quantity

Quality, Cost, and Delivery

Samsung Electronics

RAM

ROM

SCF/SCT

SMPS

SPGP

SPL

Spool

Random Access Memory

Read Only Memory

Second Cassette Feeder/Second

Cassette Tray

Switching Mode Power Supply

Samsung Printer Graphic

Processor

Samsung Printer Language

Simultaneous Peripheral Operation

Online

SURF

SW sync

T1

T2

TBD

TRC

TTM

PnP

UMC

Surface Rapid Fusing

Switch

Synchronous or Synchronization

ITB

Transfer Roller

To Be Determined

Toner Reproduction Curve

Time to Market

Universal Plug and Play

Unit Manufacturing Cost

URL

USB

Uniform Resource Locator

Universal Serial Bus

VCCI Voluntary Control Council for

Interference Information

Technology Equipment

WECA Alliance Wireless Ethernet Compatibility

Wi-Fi Wireless Fidelity


2-3


2.3 Select a location for the printer

• Leave enough room to open the printer trays, covers, and allow for proper ventilation. (see diagram below)

• Provide the proper environment :

- A firm, level surface

- Away from the direct airflow of air conditioners, heaters, or ventilators

- Free of extreme fluctuations of temperature, sunlight, or humidity

- Clean, dry, and free of dust

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Samsung Electronics


2.4 The Sample Pattern for the Test

The sample pattern shown in below is the standard pattern used in a factory.

The contents of the life span and the printing speed are measured with the pattern shown in below.

(The picture in the manual is 70% size of the actual A4 size.)

2.4.1 A4 5% Pattern

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2-5


2.4.2 A4 2% Pattern

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2.4.3 A4 IDC 5% Patten


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2-7


MEMO

2-8


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3

3. Specifications

Specfications are correct at the time of printing. Product specifications are subject to change without notice.

See below for product specifications.

3.1 General Specifications

Specifications

Remarks

General

Items

Major Features

Size (W*D*H)

SCX-4100

Copier,Print,Scan

16.6"x15.8" x9.4"

(422x400x239mm)

0.69 Kg

8.89 Kg

12.04 Kg

Net Weight(Inc. Toner Cartridge)

Net Weight(exc. Toner Cartridge)

Gross Weight(with package)

USB1.1 & IEEE1284

300 Wh

Energy Star Compliant

Yes

Power

Consumption

I/O Interface

Printing Operation

Sleep Mode

Power Switch

Noise

Warm Up Time from Cold Status

Machine Life Max. Monthly Volume Print

(Duty Cycle) Scan

Average Monthly Print Volume

Machine Life

Approval

Device Memory

Internal N/W Option

Page Counter

Print Configuration

Sheet

Less than 42 seconds

10,000pages

2,000pages

500 Pages

5 years, 100000 Pages

Whichever comes first.

Class B

8MB

N/A

Yes

Yes


3-1

Samsung Electronics

Specifications

3.2 Print Specification

PRINT

Items

Print Speed

Print Method

Print Language

Power Save

Resolution Normal

RET

Toner Save

SCX-4100

15ppm/Ltr, 14ppm/A4

Laser

SPL

Yes(5/10/15/30/45min.)

600 x 600 dpi

No

Yes

Remarks

LCD Only (Toner

Save On/Off

Setting method is in the Menu).

Memory 8MB

FPOT

Duplex Print

Printable Area

From Stand by Approx. 12 seconds

From Cold Status Less than 54 seconds

N.A

208 x 273 mm (Letter)

Halftone(Gray Scale) 256 levels

3.3 Scan Specification

SCAN

Items SCX-4100

Scan Method Color CIS

Scan Speed through Lineart, Halftone 72 sec

Platen Gray

Color

75dpi/300dpi

Resolution Optical

72 sec

40sec/150 sec

600*600dpi

Remarks

2400dpi*2400dpi(Parallel)

Halftone 256level

Scan Size Max. Document Max.216mm(8.5")

Width

Effiective Scan Max 208mm(8.2inch)

Width

Scan-to

Scan Depth Color

Mono

E-mail, Image, OCR, WEB "through PC -->

Through PC means "from

SmarThru4 application".

24 bit

1bit for Lineart, Halftone,

8 Bit for Gray scale

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Samsung Electronics

Specifications

3.4 Copy Specification

COPY

Items

Copy Quality Selection or Text

Original Image type Text/Photo selection Mode Photo

FCOT Stand by

SCX-4100

600x300dpi

600x300dpi

600x600dpi for Platen

Approx. 12 seconds

From Cold Status Less than 54 seconds

Copy Speed / Letter SDMC at all mode 15cpm/Ltr. 14cpm/A4

Remarks

SDMC: Single

Document

Multiple Copy

Resolution Scan:600*600dpi

Print:600*600dpi

Zoom Range 50% to 200%

Multi Copy 1~99

Preset Yes

Darkness Control

Copy Mode(=Original Type)

3 level

Text, Text/Photo, Photo

Collation Copy

Auto return to default mode

N/A

Yes(after 1 minute)

Changeable Default mode

Special Copy 2-up copy

Collation Copy

AutoFit Copy

2 Sides in 1 pg

Light, Normal, Dark

Time can be changeable;

15,30,60,180sec, Off

Darkness, Original Type,

Reduce/Enlarge, No. of Copies,

Yes(Platen only)

N/A

Yes(Platen only)

Yes(Platen only) * Copy 2-side printed original document into one page(ex. ID

Card Copy)


3-3

Samsung Electronics

Specifications

3.5 Paper Handiling Specification

Items

Paper Handling Capacity( 20lbs)

Optional Cassette

Output Capacity

Output Control

Paper Size

Paper Weight

Main Tray

Bypass

Main Tray

SCX-4100

Main Tray 250sheets

Bypass(MP Tray) Single Sheet

No

Face Down: 50Sheets/20lb

Face Up: 1Sheet

Face down/Face up

Legal,A4,Letter, Folio,

Executive, B5, A5, A6

Bypass:Envelope6 3/4, 7

3/4,#9, #10,DL,C5,B5

16~24 lb.

Remarks

With main tray paper

Paper Path

Paper Size

Standard output Bottom to Top Front (FIFO)

Straight Through Face up, Single Sheet

Max 216 x 356mm(8.5"x14")

Min 76 x 127mm(3"x5")

3-4


Samsung Electronics

Specifications

3.6 Other Specification

Software WHQL

WIA

Items SCX-4100

Win 3.x

Win 95

No

Yes

Win 98&WinME Yes

Win NT 4.0 Yes

Win 2000

Win XP

Yes

Yes

Mac Yes

Linux Yes

Printer Yes

Scanner No

Remarks

Mac Printer Only

Printer driver only for WinXP

Package TWAIN Yes

WIA

RCP

No

PC-FAX

Panel, Only for upgrade FW through PC

Package and POP POP

Quick Reference guide

(include Setup Guide and

Function Guide)

Accessory Owner's manual

S/W CD ROM

Yes

Consumables

Toner Cartridge

Power Cable

Telephone Jack

Printer Cable

Type

How to install

Toner Count

Offset BOx

Yes

Level Sensor

Software Count

Yes(Electronic)

1 CD for User Manual, Smar

Thru 4, Print Driver, Scan

Driver, RCP

1 EA

1 EA

No

No

L-shape power cable

China,Korea : USB

Russia : Parallel cable

One Piece

Front door open and front loading running 3Kpages

No

No


3-5

Samsung Electronics

Specifications

MEMO

3-6


Samsung Electronics


4

4. Summary of Product

This chapter describes the functions and operating principles of the main component.

4.1 Printer Components

4.1.1 Front View

Samsung Electronics


4-1

Summary of Product

4.1.2 Rear View

4-2


Samsung Electronics


4.1.3 Control Panel

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4-3


4.2 System Layout

SCAN PART

4-4


Samsung Electronics


4.2.1 Paper Feed Mechanism

The printer has a universal cassette which automatically loads paper and a manual feed which supplies paper single sheet at a time. The cassette has a friction pad which separates paper to ensure single sheet feeding, and it has a sensor, which checks when the paper tray is empty.

- Feeding Method: Universal Cassette Type

- Feeding Standard: Center Loading

- Feeding Capacity: Cassette-250 sheets (75g/m2 , 20lb paper standard)

Manual 1 sheet (Paper, OHP, Envelop, etc.)

- Paper detecting sensor: Photo sensor

- Paper size sensor: None

4.2.2 Transfer Ass’y

This consists of the PTL (pre-transfer lamp) and the Transfer Roller. The PTL shines a light onto the OPC drum.

This lowers the charge on the drum’s surface and improves transfer efficiency.

The transfer roller transfers toner from the OPC drum surface to the paper.

- Life expectancy: Over 60,000 sheets (at 15~30°C)

4.2.3 Drive Ass’y

A gear driven power unit. The motor supplies power to the paper feed unit, the fuser unit, and the toner cartridge.

4.2.4 Fixing Part(Fuser)

There are two types of fuser unit:

Q-PID type, developed by Samsung, and only used on 220V Domestic models

Heat Lamp type used on 220V Export models and all 110V models.

The Heat Lamp type fuser consists of the Heat Lamp, Heat Roller, Pressure Roller, Thermistor, and Thermostat. It fixes toner to the paper using pressure and heat to complete the printing job.

4.2.4.1 Heat Lamp power cut-off (Thermostat)

The thermostat is a temperature sensing device, which cuts off the power to the heat lamp to prevent overheating fire when the heat lamp or heat roller overheats.

4.2.4.2 Temperature Detecting Sensor (Thermistor)

The Thermistor detects the surface temperature of the heat roller, this information is sent to the main processor which uses this information to regulate the temperature of the heat roller.

4.2.4.3 Heat Roller

The surface of the Heat Roller is heated by the Heat Lamp. As the paper passes between the Heat and Pressure rollers the toner is melted and fixed permanently to the paper. The surface of the roller is coated with Teflon. This ensures that toner does not adhere to the roller surface.

4.2.4.4 Pressure roller

The Pressure Roller mounted under the heat roller, it is made of a silicon resin, and the surface of the roller is tubed with Teflon. This ensures that toner does not adhere to the roller surface.


4-5

Samsung Electronics


4.2.4.5 Safety Relevant Facts

• To prevent overheating

- 1st protection device: Hardware cuts off when overheated

- 2nd protection device: Software cuts off when overheated

- 3rd protection device: Thermostat cuts off mains power to the lamp.

• Safety device

- Fuser power is cut off when the front cover is opened

- LSU power is cut off when the front cover is opened

- The temperature of the fuser cover's surface is maintained at less than 80ºC to protect the user and a caution label is attached where the customer can see it easily when the rear cover is opened.

4.2.5 Scanner Unit

• Scan Image Controller

1.Scan Line Time : 1.67ms

2.Scan Resolution : Color : Max 600DPI

3.Scan Width : 216mm

4.Function

- White Shading Correction

- Gamma Correction

- CIS Interface

- 256 Gray Scale

• CIS Driver Circuit

- CIS Clock : 4.16MHz

- Voltage Reference : 1.1V

- CIS Line Time : 1.67ms/Line x 3Color(600dpi)

• Scan Motor Driver Circuit

- Motor Driver : SIA403A

- Used Volt : 24V DC

4-6


Samsung Electronics


4.2.6 LSU (Laser Scanner Unit)

This is the core of the laser printer. It converts the video data received from the computer into an electrostatic latent image on the surface of the OPC drum. This is achieved by controlling the laser beam and exposing the surface of the OPC drum to the laser light. A rotating polygon mirror reflects the laser light onto the OPC and each side of the mirror is one scan line. The OPC drum turns as the paper feeds to scan the image down the page.

The /HSYNC signal is created when the laser beam from LSU reaches the end of the polygon mirror and this signal is sent to the controller. The controller detects the /HSYNC signal to adjust the vertical line of the image on paper. In other words after the /HSYNC signal is detected the image data is sent to the LSU to adjust the left margin on the paper.

Samsung Electronics


4-7


4.2.7 Toner Cartridge

The toner cartridge is an integral unit containing the OPC unit and toner unit. The OPC unit consists of the OPC drum and charging roller, and the toner cartridge unit consists of the toner, supply roller, developing roller, and blade (Doctor blade)

- Developing Method: Non magnetic 1 element contacting method

- Toner: Non magnetic 1 element shatter type toner

- The life span of toner: 3,000 sheets (IDC Pattern/A4 standard)

- Toner remaining amount detecting sensor: No

- OPC Cleaning: Electrostatic process

- Management of waste toner: Electro static process(Cleanerless Type)

- OPC Drum protecting Shutter: No

- Classifying device for toner cartridge: ID is classified by interruption of the frame channel

0.22mW

-970V

-330V

-480V

4-8


Samsung Electronics


4.3 Main PBA

The Engine Board and Controller Board have been integrated into a single PBA. This consists of the CPU, printer scanner and line control functions. The CPU functions as the bus controller, I/O handler, motor driver and PC inter-face.

The main board sends the Current Image Video data to the LSU and manages the Electrophotographic printing process. Circuits on the PBA drive include the main motor (paper feed, cartridge, fuser), clutch driver, pre-transfer lamp driver, heat-lamp driver, CIS driver, scan motor driver and fan driver.

The signals from the paper feed jam sensor and paper empty sensor are inputted to the main board from the power supply PBA.

Samsung Electronics


4-9


4.3.1 ASIC (Chorus2)

The Chorus2 (16Bit RISC Processor) ASIC is the main processor controlling the whole system. It controls all of the printing and scanning functions using a system program stored in flash memory.

•Main function block

• Completely Integrated System for Embedded Applications,

• 16/32 Bit Risc Architecture, Efficient and Powerful ARM7TDMI CPU

• LSU Interface Module for Interfacing PVC with LSU

• 5 Channel General Purpose DMA Controller for High Speed I/O

• Dual Memory Bus Architecture

• Operating frequency : 66MHz

• Operating power : 1.8V(internal), 3.3V(external)

4.3.2 Flash Memory

This stores the system program. Firmware upgrade is achieved by downloading from the new image using the PC

Interface.

• Capacity : 1M Byte

• Access Time : 70 nsec

4.3.3 SDRAM

This is used as a buffer, system working memory area, etc. while printing and scanning.

• Capacity :

SCX-4100

8 M byte

• Access Time : 15 nsec

4.3.4 Sensor input circuit

1) Paper Empty Sensing

The Paper Empty sensor (Photo Interrupter) on the SMPS/HVPS PBA is monitored by the CPU.

When the cassette is empty the printer displays a message on the LCD panel.

2) MP Sensing

Presence of paper in the MP tray is detected by operation of the MP Sensor (Photo Interrupter) on the

SMPS/HVPS PBA. The CPU monitors this signal to recognize paper in the MP, and paper is fed from MP if there is paper present.

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3) Paper Feeding, Toner Cartridge Sensing

When paper passes the actuator on the feed sensor, it is detected by the Photo interrupter.

Signal (nP_FEED, PIN 186) monitored by the CPU and this signal starts the process of creating the image after certain delay time If the feed sensor is not detected within 1 sec. after paper is fed, a paper Jam0 occurs. (Displayed on the

LCD panel).

When a toner cartridge is inserted it also operates the Paper Feed sensor. A message is displayed on the LCD id no cartridge is detected.

4) Paper Exit Sensing

This detects that paper exits cleanly from the set using an exit sensor on the engine board and actuator on the frame.

The monitors signal (P_EXIT, PIN 84) and detects the on/off time of the exit sensor and if jam status is detected then

JAM2 is displayed the on the LCD panel.

5) Cover Open Sensing

The Cover open sensor actuator is located on the front cover and the senor is in the main frame.

When the front cover is open the +24V and +5V supplies to the DC fan, solenoid, main motor, polygon motor part of

LSU, HVPS and LSU Laser diode are cut off. The CPU monitors signal (COVER_OPEN, GPIO_11) to recognize when the cover is open.

6) DC FAN / SOLENOID Driver

It is driven by a transistor and controlled by signal (FAN, GPIO_7; Main Clutch Solenoid:PIN 185,MP Clutch Solenoid:

PIN 184) bit of the CPU.

When it is high the fan is activated by turning on the TR, and it is off when the sleep mode is selected. There are three solenoids and these are driven by the Paper Pick-up, Regi and MP signals. The diode protects the driving TR from the

Back-EMF pulse which is generated when the solenoid is de-energized.

7) Motor Driver

The motor driving circuit is activated when the Driver IC is enabled. An AN44060 (Motor driver IC) is used in this case.

The resistance Rs value of sensing and the voltage value of the V reference can be changed by the motor driving voltage value.


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Samsung Electronics


4.4 SMPS & HVPS

The SMPS and HVPS are on one integrated board.

The SMPS supplies the DC power to the system. It takes either 110V or 220V and outputs the +5V and 24V supplies to the main and other PBAs.

The HVPS creates the high voltage of THV/MHV/Supply/Dev and supplies it to the toner cartridge. The CPU is used to modify some of these voltage settings to provide the ideal voltages to create the image.

The HVPS part uses the 24V and outputs the high voltage for THV/MHV/BIAS and the outputted high voltage is supplied to the toner, OPC cartridge and transfer roller.

F1

110V : 125V/8A

220V : 250V T 5A H

CN1

(H/L CON.)

F2

110V : 125V/3A

220V : 250V 2A H

CN3

(FAN CON.)

CN4

(PANEL CON.)

MHV OPC

THV

DEV

SUPPLY

COVER OPEN SWITCH

MANUAL SENSOR

FEED SENSOR

PAPER-EMPTY SENSOR

EXIT SENSOR MAIN PBA CON.

F101

250V L2A

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4.4.1 HVPS(High Voltage Power Supply)

1) Transfer High Voltage (THV+)

- Function : It is this voltage that transfers toner from the OPC Drum to the paper.

- Output voltage : Maximum +5000V ±5% (no load, variable duty cycle)

- Error : IF THV (+) is not present, low density printing occurs due to toner on the OPC Drum not being transferred to the paper. It is possible that waste toner over-flow can occur if this condition persists.

Ghost images may appear which repeat at 76mm intervals.

2) Charge Voltage (MHV)

- Function : It is this voltage that charges the surface of the OPC to -900V ~ -1000V.

- Output voltage : -1300V ~ -1800V DC ± 50V

- Error : IF MHV is not present toner then since the OPC drum surface has no charge toner is attracted to the whole OPC surface. A black page is printed out when this happens.

3)Cleaning Voltage (THV-)

- Function : It removes toner contamination from the rear side of the paper by sending (-) polarity to the transfer roller forcing toner to transfer back to the to OPC drum.

- Output Voltage : -1000VDC, +300V/-150V

- Error : Smudges and toner contamination on the reverse side of the printed page.

4) Developing Voltage (DEV)

- Function: It is this voltage that develops toner with on to the section of the OPC drum surface exposed by the

LSU (Laser Scanning Unit).

* When printing the exposed voltage on the OPC is -180V, unexposed is -970V, and the exposing voltage on the DEV is -330V. Therefore toner with (-) polarity is developed onto an exposed section of the OPC.

- Output voltage: -200V ~ 600V DC ± 20V

- Error: a) If DEV is GND, print density gets extremely low.

b) When DEV is floating due to poor connection between the frame and cartridge contacts etc., print density gets extremely high.

5) Supply Voltage (SUP)

- Function: It is this voltage that supplies toner to the developing roller.

- Output voltage: : -350V ~ -750V DC ± 50V (Use ZENER)

- Error: a) When SUP is GND print density gets extremely low.

b) If SUP is floating due to poor connection between the frame and cartridge contacts etc.

density gets extremely low such that it is hard to see toner with the eyes

6) OPC Ground ZENER Voltage

- Function: It is this voltage that prevents image contamination under low temperature and low humidity environment conditions.

- When a set prints without an output voltage, -130V DC ± 15V is maintained on OPC ground. (-130V ZENER diode is connected to OPC ground)

- Error type: a) When the ZENER diode is - 0V there is no serious image problem in general environment, but in low temperature and low humidity environments it is possible that contamination can occur on the entire image b) When the ZENER diode is disconnected a blank page is printed out. (It is the same when a

ZENER diode is disconnected from OPC ground.)


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Samsung Electronics


4.4.2 SMPS (Switching Mode Power Supply)

This is the power source for the whole system. It is an independent module so that it is possible to use it for common use. It is mounted at the bottom of the set.

It consists of the SMPS section, which supplies the DC power to drive the system, and the AC heater control part, which supplies the power to the fuser. The SMPS has four output channels (+5V, +3.3V, +3.3VS and +24VS).

There are three kinds of power, 120V exclusive (America), 220V exclusive (Europe), and 220V for China (nations with unstable power supply).

3

6

7

4

5

1) AC Input

- Inputting rated voltage : AC 220V ~ 240V AC 100~127V

- Inputting voltage fluctuating range : AC 198V ~ 264V AC 90V ~ 135V

- Rated frequency : 50/60 Hz

- Frequency fluctuating range : 47 ~ 63 Hz

- Inputting Current : Under 4.0Arms/2.0Arms (when heat lamp is off)

2) Rated Power Output

NO Item

1 Channel name

2 Connector Pin

Rated Output Voltage

Max. Output current

Peak Loading voltage

Ripple noise voltage

Maximum output

CH1

+5V

CON 4

5V PIN: 3, 4, 23

GND PIN: 5, 6

+5V ± 5%

(4.75 ~ 5.25V)

1.0 A

1.5 A

Under 150m Vp-p

5.0W

CH2

+24V

CON 4

24V PIN : 14

GND PIN: 8, 9, 10

+24V - 10/15%

(21.6 ~ 27.46V)

0.5A

1.0A

Under 500m Vp-p

12W

CH3

+24.0VS

CON 4

24V PIN: 11, 12

GND : 8, 9, 10

+24VS - 10/15%

(21.6 ~ 27.46V)

1.0 A

1.5 A

Under 500m Vp-p

24W

Remark

1ms

3) Consumption Power

NO Item

1

2

3

Stand-By

PRINTING

Sleep-Mode

CH1

(+5V)

0.2 A

1.0 A

0.2A

4) Length of Power Cord :

1830 ± 50mm

5) Power Switch :

Fitted

CH2

(+24V)

0.07A

0.5A

0.02A

CH3

(+24VS)

0.07 A

1.0 A

0.03A

System

AVG : 60 Wh

AVG : 300 Wh

AVG : 10 Wh

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6) Feature

- Insulation resistance : over 50M

Ω

(at DC500V)

- Insulation retest pressure : Must be no problem within 1min. (at 1500Vzc, 10mA)

- Leakage voltage : under 3.5mA

- Running voltage : under 40A peak (at 25°c, Cold start) Under 60A peak (in other conditions)

- Rise Time : Within 2Sec

- Fall Time : Over 20ms

- Surge : Ring Wave 6KV-500A (Normal, Common)

7) Environment Condition

- Operating temperature range : 0°c ~ 40°c

- Storage temperature range : -25°c ~ 85°c

- Storage humidity range : 30% ~ 90% RH

- Operating atmospheric pressure range : 1

8) EMI Requirement :

CISPR ,FCC, CE, MIC, C-Tick,

9) Safty Requrement

- IEC950 UL1950, CSA950, C-UL,Semko,iK,CB, CCC(CCIB),GOST, EPA,

4.4.3 Fuser AC Power Control

The Fuser (HEAT LAMP) is heated using AC power. The AC power is controlled by a Triac (THY1), a semiconductor switch. 'On/Off control' is achieved when the gate of the Triac is turned on/off by a Photo triac (PC1), this is an insulting part.

In the other words the AC control part is a passive circuit. It turns the heat lamp on/off by taking a signal from the engine control section. When the 'HEATER ON' signal is activated by the engine the LED of PC1 (Photo Triac) flashes. The flashing light causes the Triac (PC1) to switch and a voltage is supplied to the gate of Triac THY1.

As a result AC current flows in the heat lamp, and heat is produced. On the other hand, when the signal is off,

PC1 is off, the voltage is cut off at the gate of Triac THY1, this Triac is therefore off, and thus the heat lamp is turned off.

1) Triac (THY1) feature

- 12A,600V SWITCHING

2) Phototriac Coupler (PC3)

- Turn On If Current : 15mA ~ 50mA(Design: 16mA)

- High Repetive Peak Off State Voltage : Min 600V


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4.5 Engine F/W

4.5.1 Feeding

If feeding from the cassette the drive of the pickup roller is controlled by controlling the pick-up solenoid. The on/off of the solenoid is controlled by controlling the general output port or the external output port. If feeding from the manual feeder the set decides to feed the paper according to the operation of the manual sensor, and by driving the main motor, insert the paper in front of the feed sensor. When paper moves the occurrence of a paper jam is judged as below.

4.5.1.1 Jam 0 – Jam in Feed area

• After a page was picked up, paper did not enter the unit due to a paper misfeed.

• After a page was picked up, paper entered but it did not reach the feed sensor in certain time due to slip, etc.

• After a page was picked up, if the feed sensor is not on try to pick up again. After retrying if the feed sensor is still not on after certain time, it is Jam 0.

- this indicates that the leading edge of the paper doesn't pass the feed sensor within a certain time.

• Even though the paper reaches the feed sensor, the feed sensor does not turn on.

- this indicates that the leading edge of the paper already passed the feed sensor or that the sensor is faulty.

4.5.1.2 Jam 1 – Jam inside the print engine

• After the leading edge of the paper passes the feed sensor, the trailing edge of the paper does not pass the feed sensor within certain time. (During this time the feed sensor cannot be Off)

• After the leading edge of the paper passes the feed sensor, the paper does not reach the exit sensor within a certain time. (The exit sensor cannot be On during this time)

- There is already paper between the feed sensor and the exit sensor.

4.5.1.3 Jam 2 – Jam in the Exit area

• After the trailing edge of the paper passes the feed sensor the trailing edge of the paper does not pass the exit sensor within certain time.

4.5.2 Drive

The main motor drives the paper feed, developing unit and the Fuser It is driven by software which controls the acceleration, constant speed and deceleration profiles. The Motor is managed with an AN44060 driver IC and controlled by step and enable signals from the CPU.

4.5.3 Transfer

The charging voltage, developing voltage and the transfer voltage are controlled by PWM (Pulse Width

Modulation). Each output voltage is changeable according to the PWM duty cycle. The transfer voltage used when the paper passes the transfer roller is decided by environment recognition. The resistance value of the transfer roller changes due to the surrounding environment in the room or within the set, this change in resistance in turn changes the value of the voltage due to loading. This voltage is fed back into the set through the A/D converter.

Based on this fed back value the PWM cycle is changed to maintain the required transfer voltage Page 4-10 has a different chip number Which is correct

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Samsung Electronics


4.5.4 Fusing

The temperature of the heat roller's surface is detected according to the resistance value of the thermistor.

The thermistor resistance is measured using the A/D converter and thus the CPU can determine the temperature of the heat roller. The AC power is controlled by comparing the target temperature to the value from the thermistor. If the value from the thermistor is out of the controlling range while controlling the fusing process, the error stated in the table occurs. (For the domestic model, the Q-PID method has been applied.)

• Heat Lamp Method

Error

Open heat error

Lower heat error

Over heat error

Description

When warming up, it has been lower than 68°C over 28 seconds

• Standby:

It has been lower than 80°C over 10 seconds

• Printing:

- 2 consecutive pages: it has been lower than

145°C over 4 seconds.

- 3 consecutive page; it has been 25°C lower than the fixed fusing temperature over 4 seconds.

It have been higher than 220°C over 3 seconds

LCD Displat

All open heat error are blinking

All low heat error are blinking

All over heat error are blinking

4.5.5 LSU

The LSU consists of the LD (Laser Diode) and the polygon motor control. When the printing signal occurs, the LD is turned on and the polygon motor is enabled. When the light sensor detects the beam, Hsync occurs. When the polygon motor speed becomes a normal, LReady occurs. If these two conditions are satisfied, the status bit of the

LSU controller register becomes 1 and the LSU is judged to be ready. If the two conditions are not satisfied, the error shown in the table below occurs.

Error

Polygon motor error

Description

When the polygon motor’s speed doesn’t reach operating speed

Hsync error The polygon motor’s speed is normal, but the Hsync signal is not created.


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MEMO

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Disassembly and Reassembly

5

5. Disassembly and Reassembly

5.1 General Precautions on Disassembly

When you disassemble and reassemble components, you must use extreme caution. The close

Releasing Plastic Latches

proximity of cables to moving parts makes proper

Many of the parts are held in place with plastic routing a must. latches. The latches break easily; release them

If components are removed, any cables disturbed carefully. by the procedure must be restored as close as

To remove such parts, press the hook end of the possible to their original positions. Before removlatch away from the part to which it is latched.

ing any component from the machine, note the cable routing that will be affected.

Whenever servicing the machine, you must perform as follows:

1. Check to verify that documents are not stored in memory.

2. Be sure to remove the toner cartridge before you disassemble parts.

3. Unplug the power cord.

4. Use a flat and clean surface.

5. Replace only with authorized components.

6. Do not force plastic-material components.

7. Make sure all components are in their proper position.


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Samsung Electronics


5.2 Front and Rear Cover Units

1. Take the Cassette out of the printer.

3. Remove the 4 screws securing the Rear Cover and remove it, as shown below.

Rear Cover

Cassette

2. Remove the Front Cover in the direction of arrow.

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Samsung Electronics


5.3 Side Covers

1. Before you remove the Side Cover(Left Cover, Right

Cover), you should remove:

-Rear Cover (see page 5-2)

-Front Cover (see page 5-2)

2. Remove 1 screw at the front of the unit. Unclip the right cover along the top edge and remove it from the

Frame Assembly.

3. Remove 1 screw at the front of the unit. Unclip the right cover along the top edge and remove it from the

Frame Assembly.

Left Cover

Right Cover

Samsung Electronics


5-3


5.4 Scanner Ass’y

< Caution >

1. Before disassembling the Scanner Ass'y first lift it carefully at the front edge. The support lever will automatically raise into position.

2. Take care not to trap your fingers or hand in the mechanism.

5.4.1 Remove Scanner Ass’y

1. Before you remove the Scanner Ass'y, you should remove:


-Side Cover(Left Cover, Right Cover)(see page 5-3)

2. Remove the 2 connectors from the main PBA and release the ground wire from the Motor Drive Ass’y as shown below.

3. Carefully lift the Scanner Ass’y from the base taking care to thread the cables through the frame.

Scanner Ass’y

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Samsung Electronics


5.4.2 Dismantle Scanner Ass’y

< Caution >

1. Before disassembling the scanner module remove the 2 plastic spacers from each end of the scanner module.

SLIDE CIS

1. Lift the Platen Cover upward and remove it.

Platen Cover

3. Remove the CCD Cable, as shown below.

FFC Cable

2. Release 8 clips (2 per side) securing the scanner upper frame to the scanner lower frame and remove the upper frame

Scan Upper


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Samsung Electronics


4. Pull up the CCD Shaft and take out the Scanner

Module.

Scanner Module

CIS Shaft

6. Remove the Pulley Idle, as shown below.

Spring

ETC Belt

Pulley Idle

Pulley Bracket

7. Remove the 2 screws and take out the Scan Motor

Ass'y.

5. Push the Belt Holder and take out the Belt, as shown below.

Belt

Scan Motor

Ass’y

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Samsung Electronics


5.5 Middle Cover

1. Disconnect the OPE harness from the Main PBA and remove the 4 screws securing the Middle Cover.

Remove it, as shown below.

2. Remove the 4 screws securing the OPE Unit from the

Middle Cover.

Middle Cover

OPE Unit

OPE Harness

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5-7


5.6 Fuser(Heat Lamp Type)

1. Before you remove the Fuser, you should remove:


2. Unplug two connectors from the boards and then remove 4 screws. Remove the Fuser Ass’y taking care not to damage the Exit Sensor.

4. Remove 2 screws and take the Halogen Lamp out of the Heat Roller.

Heat Roller

Fuser Ass’y

Halogen Lamp

3. Remove 2 screws and take the Thermostat out of the

Fuser.

Thermostat

5.Remove 1 screw and take the Idle Gear out.

Idle Gear

5-8


Samsung Electronics


6. Remove 4 screws and divide the Fuser into two parts.

8. Remove the Thermister from the Fuser Cover.

Fuser Cover

Thermister

7. Unwrap the Thermistor Harness, as shown below.

Thermister Harness

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5-9


5.7 Exit Roller

1. Before you remove the Exit Roller you should remove:

- Rear Cover (see page 5-2)

- Side Covers (see page 5-3)

- Scanner Ass’y (see page 5-4)

- Middle Cover (see page 5-6)

2. Remove the white Exit Gear, and release a bearing clip at one end then remove the shaft and rollers as shown below.

Exit Gear

Bearing

Exit Roller

2

1

5.8 LSU

1. Before you remove the LSU you should remove:





2. Unplug 2 connector from the LSU.

3. Unplug 4 screws and take the LSU out.

LSU

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Samsung Electronics


5.9 Fan

1. Before you remove the Fan you should remove:


- Right Side Cover (see page 5-3)

2. Unplug the connector from the SMPS and remove 1 screw. Then take out the Fan.

DC Fan

5.10 Drive Ass’y

1. Before you remove the Drive Ass’y, you should remove:


- Left Side Cover (see page 5-3)

2. Remove the 6 screws from the Drive Ass’y.

3. Unplug 1 connector from the Drive Ass'y.

Drive Ass’y

Note when re-fitting the motor Drive Ass’y tighten the screws in the order that they are numbered on the Motor

Drive Ass’y base plate.

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5-11


5.11 Engine Shield Ass’y

1. Before you remove the Fuser, you should remove:



- Fuser Connector (see page 5-7)

2. Remove the 14 screws securing the Engine Shield

Ass'y and unplug the all connectors. Then remove the

Engine Shield Ass'y.

Engine Shield

Ass’y

5.12 Main PBA

1. Before you remove the Main PBA, you should remove:




- Engine Shield Ass'y (see page 5-11)

2. Unplug 1 connector and remove 5 screws from the

Main PBA. Then lift the Main PBA out as shown below.

Main PBA

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Samsung Electronics


5.13 SMPS

1. Before you remove the SMPS, you should remove:




- Engine Shield Ass'y (see page 5-11)

2. Unplug 1 connector and remove 3 screws then take the Inlet Bracket out.

Inlet Bracket

4. Remove 3 screws and take the SMPS out.

SMPS

3. Remove 1 screw and unplug 1 connector from the

Main PBA.

Samsung Electronics


5-13


5.14 Transfer Roller

1. Before you remove the Transfer Roller you should remove:





- LSU(see page 5-9)

2. Remove 3 screws and take the Transfer Earth out.

Transfer

Earth

4. Unlatch the Bush and remove it. Then lift the Transfer

Roller out, as shown below.

Transfer

Roller

Bush

3. Unplug the PTL Holder Connector then remove the

PTL Holder and PTL Lens as shown below. Take care to note the orientation of the PTL lens and ensure it is refitted correctly

PTL

Holder

PTL

Lens

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Samsung Electronics


5.15 Feed Roller

1. Before you remove the Feed Roller you should remove:





- LSU (see page 5-9)

- Drive Ass’y (see page 5-10)

2. Remove 2 screws from the Guide Paper and take it out.

4. Remove 3 screws from the Feed Bracket and take it out.

Feed Bracket

Guide

Paper

5. Remove the Idle Gear and Feed Gear2.

Feed Gear2

3. Pull up the Feed Idle Bush and Feed Idle Shaft, as shown below.

Feed Idle

Shaft

Bush

Idle Gear

6. Remove the Feed Gear 1 Ass’y, as shown below.

Feed Gear1

Ass’y


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Samsung Electronics


7. Remove the Feed Roller and Feed Roller1, as shown below.

Feed Roller

Feed Roller1

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Samsung Electronics


5.16 Pick Up Roller & Solenoid

1. Before you remove the Pick Up Roller and Solenoid you should remove:





- LSU (see page 5-9)

- Drive Ass’y (see page 5-10)

- Feed Bracket and Gears (See page 5-14 steps 4 - 6)

2. Remove the Pick up Gear Ass’y, as shown below.

4. Remove 2 screws then remove the Regi Solenoid and

Pick Up Solenoid.

(Pick up)

Solenoid

(Regi)

Solenoid

Pick up Gear

Ass’y

3. Remove the Pick up Ass’y, as shown below.

1

2

Bush

Pick up Ass’y

Samsung Electronics


5-17


MEMO

5-18


Samsung Electronics

Alignment & Adjustments

6

6. Alignment and Adjustments

This chapter describes some of the main service procedures including:

Using the EDC mode; Clearing paper jam and test patterns.

Much of this chapter is also included in the user's guide.

6.1 Engine Test Mode

The Engine Tests Mode supplies useful functions to check the condition of the engine. It tests the condition of each device and displays the result of the test on the LCD. It is classified into 5 functions (0~4), and are shown below.

6.1.1 To enter the Engine Test Mode

To enter the Engine Test mode

Menu/Exit Darkness Menu/Exit

Press in sequence, and the LCD briefly displays

'Engine Test [Diagnostic]', the machine has entered Engine Test Mode.

• To enter a lower menu (Sub menu) Press the Start/Enter key.

• To exit into an upper menu Press the Menu/Exit key.

• To return to the user menu Press the Menu/Exit key.

6.1.2 Diagnostic

Main Menu Engine test

ENGINE TEST Motor Test

MTR FAN SOL ETC PickUp Test

Fan Test

Manual Clt Test

ENGINE TEST

LSU TEST

ENGINE TEST

SENSOR TEST

PTL Test

LSU Motor Test

LSU Hsync Test

LD Test

Feed Sen Test

Exit Sen Test

Cover Sen Test

Empty Sen Test

Remark

1 : On, 2 : Off

1 : On, 2 : Off

1 : On, 2 : Off

1 : On, 2 : Off

1 : On, 2 : Off

1 : On, 2 : Off

1 : On, 2 : Off

1 : On, 2 : Off

Check : Check Start

Next : Next Sensor Check

Check : Check Start


Check : Check Start


Check : Check Start


Check : Check Start


1 : On, 2 : Off (maintain the fusing temp. 65C~230C) ENGINE TEST

HEAT TEST

ENGINE TEST

HVPS TEST

Manual Sen Text

Therm ADC 220~85

MHV Test

Dev Bias Test

THV EN/NEG Test

THV ON (1300V)

THV ADC 1300V

THV ADC 600V~3550V

1 : On, 2 : Off (-1550V ± 50V)

1 : On, 2 : Off (-430V ± 20V)

1 : On, 2 : Off (-1000V +300V/-150V)

1 : On, 2 : Off (+1300V ± 20V)

1 : On, 2 : Off

1 : On, 2 : Off (Compare each ADC Value)


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Samsung Electronics


6.2 Paper Path

SCAN PART

Fuser

EXIT

Sensor

PR

L S U

CR

OPC

DR

SR

PTL

TR

Toner Cartridge

FR

MP Sensor

P I

C

K

/R

Empty Sensor

Fuser

EXIT

Sensor

PR

L S U

CR

OPC

TR

Toner Cartridge

DR

SR

PTL

Feed

Sensor FR

MP Sensor

C

P I

K

/R

Empty Sensor

Fuser

EXIT

Sensor

PR

L S U

CR

Toner Cartridge

OPC

TR

DR

SR

PTL

Feed

Sensor FR

MP Sensor

K

/R

Empty Sensor

<Jam0> <Jam1> <Jam2>

1) After receiving a print command, the printer feeds paper from the main cassette or manual feeder as required.

2) The paper being fed passes the paper feed sensor. (Jam 0 occurs if the sensor is not operated within a certain time)

3) Having passed the paper feed sensor the paper moves to the paper exit sensor via printing process. (Jam 1 occurs if the sensor is not operated within a certain time)

4) The paper then passes through the paper exit sensor and out of the set. (Jam 2 occurs if the trailing edge of the paper does not pass the exit sensor within a certain time of the paper leading edge activating the exit sensor)

6-2


Samsung Electronics


6.3 Clearing Paper Jams

When a paper jam occurs, "Paper Jam" appears on the display. Refer to the table below to locate and clear the paper jam.

Message

PAPER JAM 0 OPEN/CLOSE DOOR

PAPER JAM 1 OPEN/CLOSE DOOR

PAPER JAM 2 CHECK INSIDE

BYPASS JAM

Location of Jam

In the paper tray

In the paper exit area

In the fuser area or around the toner cartridge

In the manual feeder

To avoid tearing the paper, pull the jammed paper out gently and slowly. Follow the steps on the next pages to clear the jam.

6.3.1 In the Paper Tray

1 Open and close the front cover. The jammed paper is automatically ejected from the machine. If the paper is not ejected continue to step 2.

2 Pull the paper tray open.

3 Remove the jammed paper by gently pulling it straight out.

4 Insert the paper tray into the machine until it snaps into place.

5 Open and close the front cover to resume printing.

If there is any resistance and the paper does not move when you pull or if you cannot see the paper in this area, skip to the fuser area around the toner cartridge. See page 6-5

Samsung Electronics


6-3


6.3.2 In the Paper Exit Area

1 Open and close the front cover. The jammed paper is automatically ejected from the machine. If the paper is not ejected continue to step 2.

2 Gently pull the paper out of the front output tray.

Skip to step 9.

If you cannot see the jammed paper in the front output tray, continue to step 3.

3 Open the jam cover by lifting the front edge of the scanner unit. The support lever will automatically pop up.

6 Open the rear cover.


8 Close the rear cover.

9 Open and close the front cover to resume printing.

4 Pull the paper out gently.

5 Close the jam cover by pushing the support tab to the left and hold it down whilst lowering the cover carefully until the cover fully down, this will hold down the tab.

If there is any resistance and the paper does not move when you pull or if you cannot see the paper in the jam cover, continue to step 6.

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Samsung Electronics


6.3.3 In the Fuser Area or Around the Toner Cartridge

NOTE: The fuser area is hot. Take care when removing paper from the machine.

1 Open the front cover and lightly push down on the cartridge then pull to take it out.


3 Replace the toner cartridge and close the front cover.

Printing automatically resumes.

6.3.4 In the Manual Feeder

“Bypass Jam” appears on the display when you try to print using the manual feeder and the machine does not detect paper, due to no paper or improper paper loading.

The error message may also occur when the paper is not properly fed into the machine through the manual feeder.

In that case, pull the paper out of the machine.


6-5

Samsung Electronics


6.4 Printing the System Data List

Your machine can print the system data report which shows the status of the user-selectable options. You may print this list to confirm your changes after changing any settings.

To print the system data list:

1 Press Menu/Exit until "Report" appears on the top line of the display.

"System Data" appears on the bottom line.

2 Press Start/Enter.

The system data list prints out.

6.5 Clearing the Memory

You can selectively clear information stored in your machine’s memory.

1 Press Menu/Exit on the control panel until "Maintenance" appears on the top line of the display.

2 Press the scroll button ( < or > ) until you see "Clear Settings" on the bottom line and press Start/Enter.

The first available menu item, “Paper Setting” displays on the bottom line.

3 Press the scroll button ( < or > ) until you see the item you want to clear.

• Paper Setting: Restores all of the Paper Setting options to the factory default.

• Copy Setup: Restores all of the Copy Setup options to the factory default.

• All Settings: Resets all of your settings to the factory default.

• Machine Setup: Resets all of the system settings, such as the display language and save modes, to the factory default.

4 Press Start/Enter. The selected memory is cleared and the display asks you to continue clearing the next item.

5 To clear another item, press Start/Enter and repeat steps 3 and 4. Or, to return to Standby mode, press Stop/Clear.

6.6 Clearing the Drum

If there are streaks or spots on your print, the OPC drum of the cartridge may require cleaning.

1 Before carrying out the cleaning procedure, make sure that paper is loaded in the machine.

2 Press Menu/Exit on the control panel until "Maintenance" appears on the top line of the display.

The first available menu item, "Clean Drum", displays on the bottom line.

3 Press Start/Enter.

4 When the display asks you to confirm your selection, press Start/Enter.

The machine prints a cleaning page. Toner particles on the drum surface are affixed to the paper.

5 If the problem remains, repeat steps 1 through 4.

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Samsung Electronics


6.7 Consumables and Replacement Parts

The cycle period outlined below is a general guideline for maintenance.

The example list is for an average usage of 50 transmitted and received documents per day.

Environmental conditions and actual use will vary these factors.

The cycle period given below is for reference only.

COMPONENT REPLACEMENT CYCLE

Pick-up Roller

Paepr Feeding Roller(Friction Pad)

Transfer Roller

Fuser

Toner Cartridge

60,000 Pages

60,000 Pages

60,000 Pages

60,000 Pages

Original 1,000 Pages Replacement 3,000 Pages

6.8 The LCD Status Display by Each Error

LCD

Door Open

[JAM 1] or

[No Cartridge]

Low Heat Error

Open Heat Error

[Over Heat]

[LSU Error]

No Paper

[Add Paper]

Paper Jam 0

Open/Close Door

Paper Jam 1

Open/Close Door

Paper Jam 2

Check Inside

Meaning Solutions

The front or rear cover is not securely latched.

The toner cartrige is not installed.

Close the cover until it locks into place.

Install the toner cartridge.

There is a problem in the fuser unit.

Unplug the power cord and plug it back in.

(Tech Mode Reference)

A problem has occurred in the LSU

(Laser Scanning Unit).

The paper tray has run out of paper.

Unplug the power cord and plug it back in.

(Tech Mode Reference)

Load paper in the paper tray.

Paper has jammed in the feeding area of the paper tray.

• Paper has jammed in the fuser area.

• A paper jam has occurred in the manual feeder or the machine detects nonfeeding from the manual feeder.

Paper has jammed in the paper exit area.

Clear the jam.

• Clear the jam.

• Clear the jam.

Clear the jam.


6.9 Periodic Defective Image

If a mark or other printing defect occurs at regular intervals down the page it may be caused by a damaged or contaminated roller. Measure the repetition interval and refer to the table below to identify the roller concerned.

No

1

4

5

2

3

6

7

Roller

OPC Drum

Charge Roller

Supply Roller

Developing Roller

Transfer Roller

Heat Roller

Pressure Roller

Defective image

75.5mm

37.7mm

47.8mm

35.2mm

45.3mm

57.1mm

59.7mm

Typical defect white spot on black image or black spot black spot light or dark horizontal image band horizontal image band image ghost

Black spot and image ghost black spot on the backside

SCAN PART

Fuser

6

7

3

4

1

2

L S U

2

1

5

4

3

PTL

Toner Cartridge

MP Sensor

OPC Drum

Charge Roller

Supply Roller

Developing Roller

5

6

7

Tramsfer Roller

Heat Roller

Pressure Roller

<Rollers Layout>

6-8


Samsung Electronics

Troubleshooting

7

7. Troubleshooting

7.1 Printing Problems – Causes and Solutions

7.1.1 Vertical Black Lines and Bands

1. Straight thin black vertical lines occur in the printing.

• Description

2. Dark black vertical bands occur in the printing.

Solution

1. Replace the toner cartridge and test again.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Check and Cause

1. Damaged developer roller, deformed

Doctor-blade or cleaning-blade in the

Toner cartridge.

2. Scratched surface of the charge roller in the toner cartridge.

3. 3. Depression or deformation of the surface of the transfer roller.

2. Replace the toner cartridge and test again.

3. Replace the transfer roller and test again.

7.1.2 Vertical White Line

• Description White vertical voids in the image.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Check and Cause

1. 1. Contamination of the window or internal lenses of LSU mirror.

Solution

1. Clean the LSU window with recommended cleaner (IPA) Clean the window with a clean cotton swab. If dirt is inside the LSU

– replace LSU.

2. Replace the toner cartridge.

2. Foreign object inside the toner cartridge or low toner.

3. Foreign object, contamination or burr on the edge of the toner cartridge window.

4. If the fuser is defective, voids occur periodically at the top of a black image.

3. Clean the exposure window.

5. Contamination of the OPC drum.

6. Depression or deformation of the surface of the transfer roller

4. Open the front cover and check the ribs that correspond to the position of the voids. Remove if found.

5. If the problems are not solved, replace the toner cartridge.

6. Replace the transfer roller.


7-1

Samsung Electronics

Troubleshooting

7.1.3 Horizontal Black Bands

• Description

1. Dark or blurry horizontal stripes occur in the printing periodically.

(These may occur at regular intervals down the page.)

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Check and Cause

1. Bad contacts on the toner cartridge high voltage terminals.

2. The rollers in the toner cartridge may be contaminated.

Charge roller = 37.7 mm

Supply roller = 47.8 mm

Develop roller = 35.2 mm

Transfer roller = 45.3 mm

Solution

1. Clean all HV terminals on the cartridge and on the set frame. Ensure all toner or paper dust particles are removed.

2. Clean the right Gear that has relatively small tooth gap on the OPC.

3. If the problem persists replace the toner cartridge.

7.1.4 Black/White Spot

• Description

1. Dark or blurry black spots occur periodically in the printing.

2. White spots occur periodically in the printing.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Check and Cause

1. If dark or blurry black spots occur periodically, the rollers in the Developer may be contaminated with foreign matte or paper particles.

( Charge roller : 37.7 mm interval

OPC drum : 75.5 mm interval)

2. If faded areas or voids occur in a black image at intervals of 75.5 mm, or black spots occur elsewhere, the OPC drum surface is damaged.

3. If a black image is partially broken, the transfer voltage is abnormal or the transfer roller's life has expired.

Solution

1. Print several OPC cleaning Mode Prints and then run the Self-test 2 or 3 times.

2. 75.5 mm repetition: Examine the surface of the OPC drum and carefully clean with a soft, lint free cloth. If unsuccessful replace the cartridge.

37.7mm repetition: Replace the toner cartridge

3. The transfer roller guarantees 60,000 sheets printing. If the roller's life is expired, replace it.

Note. Cleaning the inside of the set to remove excess toner particles or paper dust will reduce the occurrence of this problem..

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Samsung Electronics

Troubleshooting

7.1.5 Light Image

• Description The printed image is light, with no ghost.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

4. Bad contact caused by dirty terminals on the toner cartridge or set.

5. Abnormal output from the HVPS.

(Run EDC mode – see sections 6.1.2

and 6.1.3)

Check and Cause

1. Toner Save mode enabled

2. Develop roller is contaminated or the toner cartridge is almost empty.

3. Ambient temperature is below than 10°C.

Solution

1. Ensure the Toner Save mode is off. Check set and driver settings.

2. Replace the toner cartridge and try to print out again.

3. Wait 30 minutes after printer is powered on before you start printing.

4. Clean the cartridge and set contacts.

Generally clean dirt from inside the set.

5. Replace the HVPS if the problems are not solved by the above four instructions.

7.1.6 Dark Image or a Black

• Description The printed image is dark.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Check and Cause

1. No charge voltage in the engine board.

2. Charge voltage fault due to bad contact between toner cartridge and set contacts.

3. VD0 signal of the Main PBA is Low state.

Solution

1. Check the state of the connector which connects the engine board and HVPS.

2. Clean the high voltage charge terminals.

Note if 1 and 2 do not resolve the problem and the problem persists replace the

HVPS.

3. Replace the LSU Unit or Main PBA.


7-3

Samsung Electronics

Troubleshooting

7.1.7 Uneven Density

• Description Print density is uneven between left and right.

Check and Cause

1. The pressure force on the left and right springs of the transfer roller is not even, the springs are damaged, the transfer roller is improperly installed, or the transfer roller bushing or holders are damaged.

2. The life of the Toner cartridge has expired.

3. The toner level is not even on the toner cartridge roller due to the damaged blade or low toner.

Solution

1. Replace both the left and right bush and spring assemblies.

2. Replace the toner cartridge and try to print out

3. Gently shake the toner cartridge and try printing again. If the problem persists replace the toner cartridge.

7.1.8 Background

• Description Light dark background appears in whole area of the printing.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Check and Cause

1. Printing large quantities of low coverage

(2%) pages or the printer has not been used for a long time.

2. Is a recycled toner cartridge be used?

3. Has the life span of the toner cartridge ended?

4. Is the movement(Up and Down) of the transfer roller smooth?

5. Is the HVPS normal?

Solution

1. The toner cartridge is basically designed to print 3,000 sheets with 5% image. If it prints more than 3,600 sheets with 2% coverage, a background can occur.

2. The A/S is not guaranteed if using a recycled toner cartridge.

Note try shaking the toner cartridge gently from side to side. If the problem persists replace the toner cartridge.

3. Replace the toner cartridge when its life is expired.

4. Clean the transfer roller bushes.

5. Clean the high voltage charge terminals.

If this does not resolve the problem replace the HVPS.

7-4


Samsung Electronics

Troubleshooting

7.1.9 Ghost (1)

• Description Ghost occurs at 75.5 mm intervals of the OPC drum in the whole printing.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Check and Cause

1. Bad contacts caused by contamination from toner particles between high voltage terminal in the main body and the electrode of the Toner cartridge.

2. Bad contacts caused by contamination from toner particles between high voltage terminal in the main body and the one in the HVPS board.

3. The life of toner cartridge is expired.

4. Transfer roller life (60,000 sheets) has expired.

5. Low ambient temperature (below 10°C).

6. Damaged cleaning blade in the toner cartridge.

Solution

1 and 2. Clean all HV contacts, If problem persists replace the HVPS.

If problem still persists replace the Main PBA

3. Replace the toner cartridge and try to print out.

4. Check the transfer roller lifetime and replace it.

5. Wait about 30 minutes after power on before using printer.

6. Replace the toner cartridge and try to print out again

7.1.10 Ghost (2)

• Description

Ghost occurs at 75 mm intervals of the OPC drum in the whole printing.

(When printing on card stock or transparencies using manual feeder)

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Check and Cause

When printing on card stock, thicker than normal paper or transparencies, such as

OHP, a higher transfer voltage is required.

Solution

Ensure that the correct paper type is selected in the printer driver or application software.

Remember to set back to normal paper after use.


7-5

Samsung Electronics

Troubleshooting

7.1.11 Ghost (3)

• Description Ghost occurs at 57 mm intervals.

Check and Cause

Fuser contamination.

Solution

1. Disassemble the fuser and remove any contamination on the rollers. Clean any contamination from between the

Thermistor and the Heat roller. (Caution:

Take care not to deform the rollers.)

7.3.12 Ghost (4)

• Description A White ghost occurs in a black image printing at 35.5 mm intervals.

Check and Cause

1. The life of the developer may be expired.

2. Abnormal output from the HVPS.

(Run EDC mode – see sections 6.1.2)

Solution

1. Problem in the toner cartridge, replace the toner cartridge and try to print out again.

2. Check the HVPS supply voltage. Clean all

HV terminals on the cartridge and on the set. Replace the HVPS if the problem persists.

7.1.13 Stains on the Face of the Page

• Description The background on the face of the printed page is stained.

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Check and Cause

1. Toner leakage due to improperly sealed toner cartridge.

2. If the transfer roller is contaminated, stains on the face of page will occur.

Solution

1. Replace the toner cartridge.

2. If the transfer roller is contaminated, run

PC Cleaning Mode Print 2 or 3 times and then perform Self-Test 2 or 3 times to remove contamination.

7-6


Samsung Electronics

Troubleshooting

7.1.14 Stains on Back of Page

• Description The back of the page is stained at 46.5 or 58.7 mm intervals.

Digital

Digital Pri

Digital Printer

Digital Printer

Digital Printer

Check and Cause

1. 46.5mm : Transfer roller is contaminated.

2. 58.7mm : Pressure roller is contaminated.

Solution

1. Perform the OPC Cleaning Mode Print 2 or

3 times. Run Self-Test to remove the contamination from the transfer roller.

Note. Replace the transfer roller if contaminated severely.

2. Disassemble the fuser and clean the

H/R(Heat Roller) and P/R(Pressure roller).

Check and clean the area between the

H/R and the Thermistor. (Caution: Take care not to deform the rollers.)

7.1.15 Blank Page Print out (1)

• Description Blank page is printed.

Check and Cause

Bad ground contacts in OPC and/or toner cartridge.

Solution

1. Check if the Ground-OPC or the OPC

Ground Zener diode are defective or open circuit. (set inside left side).

2. Remove contamination of the terminals on the toner cartridge and the unit.

7.1.16 Blank Page Print out (2)

• Description

1. Blank page is printed.

2. One or several blank pages are printed.

3. When the printer turns on, several blank pages print.

Check and Cause

1. Abnormal solenoid.

Solution

1. Perform the engine self test using TECH

Mode to check if the Solenoid is normal.

If the problem persists replace the main

PBA


7-7

Samsung Electronics

Troubleshooting

7.2 Copy Problems

7.2.1 White Copy

• Description Blank page is printed out when copying.

Check and Cause

1. Check the Scanner Cover is properly closed.

2. Check shading profile.

3. Check white/black reference voltage on Main PBA. e.q

• CIS_SI, CIS_CLK at CN7

• Or Check the FFC

Solution

1. Room light can pass through a thin original.

2. Redo shading profile in the tech mode.

3. Replace CN7 if it is defective.

• CN7-Pin6(CIS-SI)

• CN7-Pin7(CIS-CLK)

7.2.2 Black Copy

• Description Black page is printed out when Copying.

Check and Cause

1. Check for CIS problem on the Main PBA.


Solution

1. Check the CIS harness is properly connected.


7-8


Samsung Electronics

Troubleshooting

7.2.3 Abnormal noise

• Description There is noise from the ADF when copying.

Check and Cause

1. Check the Scanner Motor, gearbox and rollers.

2. Check the Motor Driver on Driver PBA.

Solution

1. Check for correct assembly of gears and motor.

Ensure no parts are fouling and there are no foreign objects in the mechanism or scanner path. Replace any worn parts

2. Replace the main PBA.

7.2.4 Defective Image Quality

• Description The copied image is excessively light or dark

Check and Cause


2. Check the gap between original and scanner glass.

3. Check printing quality.

Solution


2. A gap of more than 0.5 mm can cause a blurred image. Ensure rollers and cover close correctly.

Replace as necessary.

3. See "Print" troubleshooting.


7-9

Samsung Electronics

Troubleshooting

7.3 Paper Feed problems – Causes and Solutions

7.3.1 Wrong Print Position

• Description Printing begins at wrong position on the paper.

Check and Cause

Wrong sensor timing caused by defective feed sensor actuator.

Solution

Replace the defective actuator

7.3.2 JAM 0

• Description

1. Paper does not exit from the cassette.

2. Jam-0 occurs when the paper feeds into the printer.

Fuser

EXIT

Sensor

PR

L S U

CR

OPC

TR

DR

SR

PTL

Toner Cartridge

FR

MP Sensor

P I

C

K

/R

Empty Sensor

Check and Cause

1. Check the Solenoid by using Tech

Mode.

2. Check cassette/MP knock-up plate and springs.

3. Check paper separator pad

Solution

1. Replace the solenoid.

2. Repair / replace as required

4. Check the pick up roller for contamination and correct assembly.

3 Clean with soft cloth dampened with

IPA (Isopropyl Alcohol) or water.

Replace if required.

4. Clean with soft cloth dampened with

IPA (Isopropyl Alcohol) or water.

Replace if required

5. Ensure all rollers are clean and free to operate correctly.

5. If continuous clusters occur, check all rollers between pickup and registration sensor.

6 If the paper feeds into the printer and

Jam 0 occurs, perform Tech Mode to check feed sensor.

6. Check the SMPS PBA, Main PBA and all connections. Replace any faulty parts or the

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Samsung Electronics

Troubleshooting

7.3.3 JAM 1

• Description

1. Paper is jammed in front of or inside the fuser.

2. Paper is stuck in the exit roller and in the fuser just after passing through the Actuator-Feed.

Fuser

EXIT

Sensor

PR

L S U

CR

OPC

TR

Toner Cartridge

DR

SR

PTL

Feed

Sensor

FR

MP Sensor

P I

C

K

/R

Empty Sensor

Check and Cause

1. If the recording paper is jammed in front of or inside the fuser.

2. If the recording paper is stuck in the exit roller and the fuser just after passing through the Actuator-Feed,

Feed Actuator may be defective.

Solution

1. Replace the Exit-Sensor, SMPS or main PBA.

2. Reassemble the Actuator-Feed and

Spring-Actuator if the movement is bad. Replace if necessary.

7.3.4 JAM 2

• Description

Fuser

PR

1. Recording paper is jammed in front of or inside the fuser.

2. Recording paper is stuck in the discharge roller and in the fuser just after passing through the

Actuator-Feed.

L S U

Toner Cartridge

CR

OPC

TR

DR

SR

PTL

Feed

Sensor FR

MP Sensor

K

/R

Empty Sensor

Check and Cause

1. If the paper is completely fed out of the printer, but Jam 2 occurs: The

Exit sensor may be defective.

• After the paper is completely discharged the Exit sensor actuator should return to its original position to shut the photo-sensor. It may stick open or return only slowly due to contamination be paper debris or foreign objects.

2. If the paper is rolled in the Fuser

Roller:

• This occurs when a Guide claw is broken away, damaged or deformed.

• It occurs when the Spring of a

Guide claw is broken or damaged.

• It occurs when the Heat-Roller or

Pressure-Roller is seriously contaminated with toner.

Solution

1. Check if the exit sensor actuator is defective.

• Check if the actuator exit is deformed

(Check if the lever part is deformed).

• Check whether burrs occur in the assembly part of the exit actuator and if the actuator operates smoothly.

• Check if foreign objects or paper debris are preventing the correct operation of the actuator.

2. If the paper is stuck in the fuser : disassemble the fuser and remove the jammed paper, and clean the surface of the pressure roller with dry gauze.

Check all ribs, claws and springs.


7-11

Samsung Electronics

Troubleshooting

7.3.5 Multi-Feeding

• Description Multiple sheets of paper are fed at once.

Check and Cause

1. Check that the paper size guides are set correctly

(cassette and MPF tray).

2. Solenoid malfunction (the solenoid does not work properly).

3. Friction Pad is contaminated.

4. Paper has a rough surface texture.

1. Adjust paper guides.

Solution

2. Replace the solenoids or PBA as appropriate.

3. Clean the friction pad rubber with a soft cloth dampened with IPA (Isopropyl Alcohol) or water.

4. Use paper with a smother surface finish.

7.3.6 Paper rolled in the fuser

• Description Paper rolled around fuser rollers or ‘Concertina’ jam

Check and Cause

1. Contamination of the pressure roller or heat roller.

2. Damaged or deformed ribs, claws or springs.

Solution

1. After disassembling the fuser, clean contamination from between the heat roller and the thermistor and also clean contamination from the pressure roller.

Clean the surface of the rollers with IPA or water

2. Check for damage or deformation of the print claws and the holder plate claws, and repair or replace as appropriate.

7-12


Samsung Electronics

Troubleshooting

7.3.7 Paper rolled on the OPC Drum

• Description Paper is rolled up in the OPC.

1. Paper is too thin.

Check and Cause

2. The face of paper is curled.

Solution

1. Use paper that conforms to the printer specification.

2. Ensure paper is stored properly to prevent curl.

Note. To remove paper rolled in the OPC.

• Remove the toner cartridge from the set, taking care not to touch the green surface. Use the gearwheel at the side to rotate the OPC drum and pull the paper from the cassette.

• Clean fingerprints on the OPC gently with soft tissue, taking care not to scratch the surface.

Samsung Electronics


7-13

Troubleshooting

7.4 Printer Faults – Causes and Solutions

7.4.1 Fuser Error

• Description

A message "Open Heat Error/Over heat/Heating Error' is displayed in the LCD panel.

Check and Cause

1. Thermostat, fuser power cable or heat lamp is open circuit.

2. Thermistor is open circuit.

3. Heat lamp ON/OFF test

4. Drive gear melted

Solution

1. Replace the whole fuser assembly if the thermostat is open circuit.

2. Replace the whole fuser assembly if the thermistor sensor is faulty.

3. Replace the fuser.

7.4.2 LSU Error

• Description A message "PMOTOR ERROR/HSYNC ERROR' is displayed in the LCD panel.

Check and Cause

1. LSU cable or connector faulty.

2. LSU motor is faulty.

3. Check the HSYNC signal.

Solution

Use TECH mode to test the LSU

- Replace the LSU

- Replace a main board if the same error persists after replacing a LSU.

7-14


Samsung Electronics

Troubleshooting

7.4.3 Fuser gear melts due to overheating causing Paper Jam.

• Description

Constant Jam where paper is entering Fuser unit.

Fuser rollers do not turn

Check and Cause

1. Check the Heat Lamp, thermostat and thermistor

Solution

1. Use EDC Mode to test the fuser.

Replace Fuser unit

Replace SMPS or Main PBA as appropriate.

7.4.4 Paper Empty

• Description Paper Empty is displayed in the LCD panel even when paper is loaded in the cassette.

Check and Cause

1. Deformed paper sensor actuator or faulty sensor.

2. SMPS PBA or Main PBA is defective

3. Faulty cables or connectors.

Solution

1. Replace the defective actuator or sensor.

2. Replace the SMPS PBA or MAIN PBA as appropriate.


7-15

Samsung Electronics

Troubleshooting

7.4.5 Paper Empty without indication

• Description

The paper empty message does not appear in the LCD when the paper cassette is empty.

Check and Cause

1. Deformed paper sensor actuator or faulty sensor.

.

2. SMPS PBA or Main PBA is defective

Solution

1. Replace the defective actuator.

2. Replace the SMPS PBA or MAIN PBA as appropriate

7.4.6 Cover Open

• Description The Cover Open message appears on the LCD even when the print cover is closed.

Check and Cause

1. The ‘Open Cover’ microswitch may be stuck or faulty

2. The tab on the front cover may be damaged or broken

3. Check the connector and cables between Switch and main PBA.

Solution

1. Use TECH mode(“cover sensor test”) to check cover switch operation. Check and replace switch if necessary.

2. Replace the front cover.

3. Replace the Main Control board or Cover Open

S/W as necessary.

7-16


Samsung Electronics

Troubleshooting

7.4.7 No error message when the cover is open

• Description

The Cover Open message does not appears on the LCD even when the print cover is open.

Check and Cause

1. The ‘Open Cover’ microswitch may be stuck or faulty

2. Check the connector and cables between Switch and main PBA.

Solution

1. Use TECH mode(“cover sensor test”) to check cover switch operation. Check and replace switch if necessary.

2. Replace the Main Control board or Cover Open

S/W as necessary.

Samsung Electronics


7-17

Troubleshooting

7.4.8 Defective motor operation

• Description

Main motor is faulty and paper does not feed into the printer, resulting in Jam 0'

Check and Cause

1. The main motor harness or Motor PCB may be faulty.

Solution

1. Check the motor harnesses and connectors, replace if defective.. If the problem persists replace the main

PBA.

Note Check motor operation using EDC Mode.

7.4.9 No Power

• Description When system power is turned on the LCD panel does not come on.

Check and Cause

1. Check if the power input and SMPS output are normal.

Solution

1. Replace the power supply cord or SMPS. Check power fuse and SMPS fuses replace if necessary.

2. Replace the OP panel.

2. LCD panel does not come on but normal start up sounds are heard.

3. After replacing SMPS display does not come on and no start up sounds are heard.

3. Replace the main PBA panel.

7-18


Samsung Electronics

Troubleshooting

7.4.10 Printed Vertical Lines become curved

• Description

When printing, vertical lines are not straight.

Check and Cause

1. Check stability of 24V supply to LSU.

Solution

1. 24V stable - Replace LSU.

24V unstable replace SMPS, if the problem persists replace the main PBA.

Samsung Electronics


7-19

Troubleshooting

7.5 Toner Cartridge Service

Only toner cartridges supplied by Samsung should be used. Printing defects or set damage caused by the use of non-approved toner cartridges or un-licensed toner refills are not covered by the guarantee.

7.5.1 Precautions on Safe-keeping of Toner Cartridge

Excessive exposure to direct light for more than a few minutes may cause damage to the cartridge.

7.5..2 Service for the Life of Toner Cartridge

If the printed image is light due to the toner supply becoming low you can temporarily improve the print quality by redistributing the toner (Shake the toner cartridge), however you should replace the toner cartridge to solve the problem permanently.

7.5.2.1 Redistributing Toner

When the toner cartridge is near the end of its life, white streaks or light print occurs. You can temporarily reestablish the print quality by redistributing the remaining toner in the cartridge.

1. Open the Front Cover.

3. Unpack the new toner cartridge and gently shake it horizontally four or five times to distribute the toner evenly inside the cartridge.

2. Lightly pushing the used cartridge down, pull it out.

4. Save the box and the cover for shipping. Slide the new toner cartridge in until it locks into place.

Note : Help the environment by recycling your used toner cartridge. Refer to the recycling brochure packed with the toner cartridge for details.

7.5.3 Standard of guarantee for consumable parts.

Please refer to User's Manual or Instructions on Printer Consumables SVC manual for the criteria for judging the quality of consumable parts the standard of guarantee on those parts.

• Spotting a refilled cartridge by eye.

One way security screws are used in the manufacture of the cartridge – check if these are damaged.

7-20


Samsung Electronics

Troubleshooting

7.5.

4

Signs and Measures of Poor toner cartridge

Fault

Light image and partially blank image

(Cartridge life is ended.)

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Signs

• The printed image is light or dirty and untidy.

• Parts of the image are not printed.

• Periodically a "tick tick" noise occurs.

Cause & Check

1. If the image is light or dirty and untidy - Shake the toner cartridge and then recheck.

OK: Lack of toner, so the life is nearly expired.

Solution

1. All of 1, 2, 3

If image quality improves by shaking, replace with a new toner cartridge. Perhaps up to

100 pages left before out of toner.

2. Some part of image is not printed - Shake the toner cartridge and then recheck.

(1)NG: clean the LSU window with a cotton swab, then recheck.

(2)OK: Lack of toner, so the life is nearly closed.

2. For item 2-

If image quality improves after cleaning the LSU window then the toner cartridge is normal.

(Contamination on the LSU window has caused image quality problems.)

3. Periodically a noise like "tick tick" occurs - Measure the time between ticks.

4. White vertical stripes on the whole or part of the page :

Shake the toner cartridge and then recheck. OK: Lack of toner, so the life is nearly expired

3. For item 3-

If the time between ticks is about 2 seconds, the toner inside the toner cartridge is almost exhausted.

( Purchase and replace with a new toner cartridge. Perhaps up to 200 pages left before out of toner)

4. For item 3-

This is a phenomenon caused by lack of toner, so replace the toner cartridge.

Toner

Contamination

• Toner contamination of the printed page at regular intervals down the page.

• Random Toner contamination over the whole or large parts of the paper surface.

1. Contamination at regular intervals.

(a)Check the distance between contamination marks.

(b)Check the appearance of both ends of the toner cartridge OPC drum.

1.(a) Refer to section 6.5

1.(b) If both ends of the OPC drum are contaminated with toner:

Check no. of pages printed using this cartridge – perhaps waste toner collector is full.

2. Random page contamination.

(a) Check that the terminals

(contact points) of the toner cartridge and the set are clean.

(b) Check that the terminals

(contact points) of the toner cartridge and the set are not damaged.

2. Clean all HV contacts. If the problem persists replace the cartridge.


7-21

Samsung Electronics

Troubleshooting

Fault

White Black spot

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Signs

• Light or dark black dots on the image occur periodically.

• White spots occur in the image periodically.

Cause & Check

1. If light or dark black dots occur at regular intervals this is because the toner cartridge rollers are contaminated with foreign substance or paper particles.

(1)38mm interval : Charge roller

(2)95mm interval : OPC cycle

Solution

1. For item 1 -

Run OPC Cleaning Mode Print

4-5 times repeatedly to remove excess toner. Especially check for foreign substances on the

OPC surface Clean with a clean gauze moistened with IPA

Isopropyl Alcohol) take care not to damage the OPC surface.

2. If white spots occur in a black image at intervals of 95mm, or black spots occur elsewhere, the OPC drum is damaged or foreign substance is stuck to the surface.

3. If a black and white or graphic image is partially broken at irregular intervals, the transfer roller's life has been expired or the transfer voltage is abnormal.

Never use other forms of alcohol.

2. For Item 2 -

If running OPC Cleaning Mode

Print 4-5 times does not resolve the problem

: at intervals of 37.7mm - place the toner cartridge.

: at intervals of 75.5mm – clean

OPC drum.

3. For item 3 - Change the transfer roller because the life of the transfer roller has expired.

(Check the transfer voltage and readjust if necessary.)

Recycled product • Poor appearance of the toner cartridge.

• Dirty or rough printouts.

• Bad background in the image.

1. Poor appearance of the toner cartridge.

(a)Check for damage to label and if different materials are used.

(b)Check the appearance of parts of the toner cartridge, such as frame, hopper, screws

1. For Item 1 the cartridge is judged to be a recycled product -

(a) If there is any evidence of disassembling the toner cartridge.

(b) If materials other than normal parts of the toner cartridge are added or substituted.

2. Clean all HV contacts. If the problem persists replace the cartridge.

2. Unclean and rough printouts.

(a)Check that the terminals

(contact point) of the toner cartridge and the set are clean.

(b)Check that the terminals

(contact point) of the toner cartridge and the set are not damaged.

Note If the cartridge is judged to be recycled then these types of problems can occur when the toner cartridge is recycled over

2 times.

If ‘nearly empty’ cartridges are collected for re-use this is judged as recycling the toner cartridge.

7-22


Samsung Electronics

Troubleshooting

Fault

Ghost & Image

Contamination

Signs Cause & Check

• The printed image is too light or dark, or partially contaminated black.

• Totally contaminated black.

(Black image printed out)

1. The printed image is too light or dark, or partially contaminated black.

(a) Check if foreign substance or toner are stuck to the terminals (point of contact) of the toner cartridge or set.

(b) Check if the terminal assembly is normal.

Solution

1. All of Items 1, 2, 3

(a) Clean the contacts on the toner cartridge.

(b) Clean the contact points on the set.

(c) If the terminal assembly is damaged repair or replace the terminals in the set or replace the cartridge

• The density of printouts is too dark and ghost occurs.

2. Totally contaminated black.

(Black image printed out)

(a) Check if foreign substances are stuck to the terminal (point of contact) of the toner cartridge or set.


(Especially check the charge roller terminal.)

3. The printed image is dark and ghost occurs.

(a) Check if foreign substances are stuck to the terminal (point of contact) of the toner cartridge or set.


(Especially check the developer roller terminal.)

2. In Item 2

This is particularly related to problems with the charge roller contact. Pay close attention to the charge roller contacts.

3. In Item 3

This is particularly related to problems with the developer bias voltage contact. Pay close attention to the charge roller contacts.


7-23

Samsung Electronics

Troubleshooting

7.6 Software Problems – Causes and Solutions

7.6.1 The printer is not working (1)

• Description

While Power turned on, the printer is not working in the printing mode.

Check and Cause

1. Run Self-Test Mode: using the menu buttons print the test page. (Menu, Enter, Enter).

2. Check that the PC and the printer are properly connected and that the toner cartridge installed correctly.

3. Printing is not working in the Windows.

4. Check that the printer cable is directly connected to the printer.

Solution

1. If the test print works that means there are no problems in the printer itself. If the test printing does not work that means the printer is faulty and the problem is not due to computer software or driver settings.

2. Replace the printer cable. If the problem is not solved even after the cable is replaced, check the amount of the remaining toner. (refer to Toner

Cartridge Service 7-6, Page 7-25)

3. Check that the connection between PC and printer port are correcct. If you use windows, check that the printer driver in the controller is set up correctly set up, the correct port is selected and ‘Use On-line’ is selected in the driver. If the printer driver is properly set up try printing a test page from the driver properties. Check in which program printing is not working.

Try opening ‘Memo Pad’ and printing. If the printer is not working in a certain program, adjust the setup within that program.

Sometimes, the printout is normal within the

Windows basic programs, but it's not working in a particular program. In this case, uninstall and reinstall the new driver. If the printer is not working in the Windows basic programs and you are printing using the parallel port check the port setting in

CMOS is on ECP and that the address is IRQ 7 and 378 (for parallel port 1). Try using USB instead of parallel – or vice versa.

4. If you have other devices that need to share the printer port try temporarily disconnecting these devices 9and perhaps even uninstalling their drivers) to ensure the printer works by itself. If you are using a USB hub try connecting directly to the back of the PC instead.

7-24


Samsung Electronics

Troubleshooting

7.6.2 The printer is not working (2)

• Description

After receiving the print command there is no response at all or print speed is low due to wrong setup of the environment rather than malfunction of the printer itself.

Check and Cause

1. Ensure you have sufficient free hard disk space for the temporary work files created during printing.

2. Printing error occurs even if there is enough space in the hard disk.

3. Check the parallel-port-related items in the CMOS

Setup.

4. Reboot the system to print.

Solution

1. Not working with the message 'insufficient printer memory' means there is a hard disk space problem rather than a printer RAM problem. In this case provide more space on the hard disk. Secure more space using the disk utilities program.

2. The connection of the cable and printer port is not correct. Check that the cable is properly connected and if you are using the parallel port check that the port settings in CMOS is correct.

3. For the printer port, Select ECP. SPP and normal normal modes support 8-bit data transfer, while

ECP Mode supports 12-bit data transfer.

4. If the regular font is not printing, the cable or the printer driver may be defective.

Turn the PC and printer off, and reboot the system to print again. If not solved, double-click the printer in my computer If the regular fonts are not printed this time again. the cable must be defective so replace the cable with new one.


7-25

Samsung Electronics

Troubleshooting

7.6.3 Abnormal Printing

• Description

Printing does not work – even after replacing the cable

Printer does not work at all or strange fonts are printed,

Check and Cause

1. Set up the parallel port using CMOS SETUP.

2. Printer Driver Error.

3. Error message “insufficient memory”.

(The printing job sometimes stops due to insufficient virtual memory, this is caused by insufficient space on the hard disk.)

Solution

1. Ensure that ECP (best) or SPP is selected in the

CMOS (BIOS) setup.

2. Ensure that the correct driver is loaded. Use the driver supplied on the CD or downloaded from the

Samsung web site. DO NOT use the Microsoft driver supplied with the Windows operating system.

If the printer is a GDI or SPL type printer ensure that

ALL OTHER GDI or SPL drivers are uninstalled as

Windows allows only 1 of this type of driver to be loaded.

3. Delete any unnecessary files to secure enough space on the hard disk and start the print job again.

7-26


Samsung Electronics

Troubleshooting

7.6.4 SPOOL Error

• Description

SPOOL (simultaneous peripheral operations online) is the process Windows uses to manage print jobs. Jobs are processed and then stored on the hard disk until the printer is ready to accept them

Check and Cause

1. Insufficient space on the hard disk in the directory assigned for the basic spool.

2. If previous printing errors were not solved.

3. There may be conflict with other drivers or programs.

Solution

1. Delete any unnecessary files to provide more space for spool storage.

2. There may be files from previous failed print jobs on the hard disk with the name in the form ‘*.jnl’.

Delete these files and Reboot Windows to restart the printer.

3. Shut down all other programs except the current one, if possible.

4. Delete the printer driver completely and reinstall it.

4. When an application program or the printer driver is damaged.

5. When some files related to the OS are damaged or virus infected.

6. Memory is less than suggested.

5 After rebooting the computer, check for viruses, restore the damaged files and reinstall the application program which is not working properly.

6. Add up more memory to the PC.

How to delete the data in the spool manager.

In the spool manager, the installed drivers and the list of the documents waiting to be printed are shown.

Select the document to be deleted and check delete in the menu.

If the job you are deleting is the current job when you delete the job data that has already been transferred to the printer’s memory will still be printed. If there is a problem with the printer (out of toner, offline, out of paper etc.) the job may take a long time to delete as it must wait for a time out.


7-27

Samsung Electronics

Troubleshooting

MEMO

7-28


Samsung Electronics

Exploded View & Parts List

8

8. Exploded Views and Parts List

8.1 Main Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-2)

8.2 Frame Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-4)

8.3 Scanner Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-7)

8.4 Fuser Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-9)

8.5 Middle Cover Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-11)

8.6 Driver Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-13)

8.7 Cassette Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-14)

Samsung Electronics


8-1


8.1 Main Assembly

10

0

3

11

8

5

5-1

5-2

5-4

5-5

5-3

5-4

9

17

Toner Cartridge

Frame

13

7

8-1

8-3

8-2

2-1

1

2

12

16

14

15

6

8-2


2-2

4

Samsung Electronics

EXPLODED VIEW & PARTS LIST

No.

0

1

2

13

14

15

16

2-1

2-2

3

4

5

6

7

8

9

10

11

12

8-1

8-2

8-3

5-1

5-2

5-3

5-4

5-5

5-6

S

17

Main Assembly Parts List

Description

SCX-4100

MEA UNIT-COVER MIDDLE

MEA UNIT-COVER REAR

COVER-M_REAR

COVER-M_REAR DOOR

COVER-M_SIDE_L

COVER-M_SIDE_R

MEA UNIT-COVER FRONT

COVER-M_FRONT

ADJUST-M_MANUAL_L

ADJUST-M_MANUAL_R

ADJUST RACK-M_MANUAL

GEAR-RACK PINION

LABEL(P)-EXTRACT(DEVE)

SCREW-TAPTITE

MEA UNIT-CASSETTE_MB

UNIT-HUMMING_VE LSU

MEA ETC-TR

ROLLER-TRANSFER

GEAR-TRANSFER

PPR-SPACER-TR

ELA-UNIT-DRIVE

ELA-UNIT-COVER PLATEN

CBF JARMESS-LSU

FAN-DC

PBA MAIN-CONTROLLER

MEA UNIT-SHIELD ENGINE

BRACLET-P-INLET

SMPS-V1, 110V

SMPS-V2, 220V

CBF HARNESS-ENGINE

SEC.Code

SA : Service Available

O : Service available X : Service not available

Q’ty SA Remark

JC97-01958A

JC97-01959A

JC63-00475A

JC63-00476A

JC63-00472A

JC63-00471A

JC97-01960A

JC63-00477A

JC70-00481A

JC70-00482A

JC70-00304A

JC66-00387A

JC68-01085J

6003-000264

JC97-01914A

JC59-00018C not assign

JC66-00725A

JC66-00395A

JC72-00851A

JC96-03138A

JC96-03050A

JC39-00242A

3103-001085

JC92-01594A

JC97-01792A

JC61-00601A

JC44-00072A

JC44-00073A

JC39-00240A

1

1

1

2

1

3

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

X

O

O

O

O

X

O

O

O

X

X

X

X

X

O

O

O

O

O

X

X

O

O

O

O

O

O

O

O

O

SCX-4100

SCX-4100

SCX-4100

SCX-4100

110V

220V


8-3

Samsung Electronics


8.2 Frame Assembly

8-4


Samsung Electronics


Frame Unit Assembly Parts List

No.

0

18

19

20

21

14

15

16

17

22

23

24

25

10

11

12

13

8

9

6

7

3

4

1

2

5

30

31

32

33

26

27

28

29

34

35

36

37

38

Description

ELA UNIT-FRAME LOWER, 110V

ELA UNIT-FRAME LOWER, 220V

FRAME-M-BASE

GUIDE-P-PAPER

PLATE-P-SAW

GUIDE-M-TR RIB

GEAR-EXIT F/DOWN

HOLDER BEARING EXIT F/DOWN

ROLLER-EXIT F/DOWN

SPRING-CS

PMO-GEAR_EXIT_DRV16

HOLDER-M-EXIT F/DOWN

PMO-ROLLER_EXIT,MAIN

PMO-ROLLER_EXIT,FR

MEC-TERMINAL

IPR-P-TERMINAL CON

IPR-P-TERMINAL CR

HOUSING-TERMINAL

PMO-LOCKER CST

PMO-ACTUATOR CVR OPEN

PMO-PLATE GUIDE DEVE_R

SPRING ETC-GUIDE DEVE

IPR-P-GROUND_GUIDE PAPER

PMO-PLATE GUIDE DEVE_L

PMO-ACTUATOR FEED

PMO-ACTUATOR EMPTY

PMO-ACTUATOR MANUAL

IPR-P-GROUND_EARTH TR

SPRING-ETC

ROLLER-FEED ROLLER 1

PMO-BUSHING FEED

ROLLER-FEED

SPRING-TS

IPR-P-EARTH TRANSFER

HOLDER-PTL

LENS-PTL

BUSH-M-TR L

SPRING ETC-TR L HAWK

SPRING-TS

PMO-BUSHING_TR(L)

SEC.Code

JC96-03137A

JC96-03137B

JC61-00579A

JC61-00943A

JC61-00604A

JC61-00933A

JC66-00038A

JC61-00829A

JC66-00378A

6107-001163

JC72-00143A

JC61-00582A

JC72-41081B

JC72-41082B

JC75-00049A

JC70-00312A

JC70-00313A

JC61-00592A

JC72-00983A

JC72-00974A

JC72-00985A

JC61-70932A

JC70-00458A

JC72-00984A

JC72-00976A

JC72-00975A

JC72-00977A

JC70-00309A

6107-001162

JC66-00526A

JC72-00382B

JC66-00598A

6107-001165

JC70-00307A

JC61-00583A

JC67-00027A

JC61-00588A

JC61-00047A

6107-001165

JC72-00102A

1

1

1

1

1

4

1

1

1

1

1

1

1

O

O

O

O

O

O

O

O

O

O

O

O

O

X

X

O

X

O

O

X

2

1

1

1

1

2

3

1

1

1

1

1

4

4

4

4

4

2

2

1

1

1

1

1



Q’ty

1

SA

O

Remark

110V

220V O

O

O

O

1

1

O

O

Spring Exit

O

X

O

O

X

O

O

O

X

X

O

O

O

Spring-act,Manual

Spring-act,Feed


8-5

Samsung Electronics


55

56

57

58

51

52

53

54

46

47

48

49

49-1

49-2

49-3

50

58-1

58-2

58-3

58-4

42

43

44

45

No.

39

40

41

58-5

58-6

58-7

59

59-1

59-2

59-3

59-4

60

61

62

63

Frame Unit Assembly Parts List(Cont.)

Description

IPR-P-GROUND_FUSER

SHAFT-FEED IDLE

BUSH-M-FEED IDLE

SPRING ETC-TR

IPR-P_GROUND_DRIVE2

SPRING-TS

CAM-M-PICK_UP

IPR-P-GROUND_DRIVE

SOLENOID-HB (PICK-UP)

SOLENOID-HB (MANUAL)

AS-GEAR PICK_UP

PMO-GEAR PICK_UP B

PMO-GEAR PICK_UP A

SPRING-CS

BRACKET-P-FEED

IPR-P-GROUND_TR

SHAFT-FEED

RING-CS

GEAR-FEED 2

GEAR-IDLE 23

GUIDE-P-PAPER

FOOT-FRONT

AS-PICK UP

BUSH-M-PICK_UP L

SHAFT-P-PICK_UP

STOPPER-PICK_UP

PMO-IDLE PICK_UP

SPONGE-ROLLER PICK_UP

BUSH-M-PICK_UP R

HOUSING-M-PICK_UP

MEA UNIT-CLUTCH

GEAR-FEED 1

PMO-COLLAR_SPRING

SPRING-TS

PMO-HUB CLUTCH

ELA HOU-FUSER_220V

ELA HOU-FUSER_110V

RMO-RUBBER EXIT

PBA MAIN-PTL

IPR-GROUND_SAW

SEC.Code

JC70-00310A

JC66-00527A

JC61-00585A

JC61-70958A

JC70-00335A

6107-001170

JC66-00377A

JC70-00308A

JC33-00009A

JC33-00010A

JC81-01692A

JC72-00980A

JC72-00979A

6107-001167

JC61-00602A

JC70-00311A

JC66-00398A

6044-000001

JC66-00394A

JC66-00396A

JC61-00718A

JC61-00836A

JC81-01693A

JC61-00586A

JC66-00399A

JC61-00593A

JC72-00982A

JC72-01231A

JC61-00587A

JC61-00591A

JC97-01788A

JC66-00393A

JC72-00978A

6107-001171

JC72-00981A

JC96-03135B

JC96-03135A

JC73-40915A

JC92-01620B

JC63-00465A

2

1

1

1

3

1

1

2

2

2

1

1

1

1

1

1

1

1

1

1

1

1

2

1

Q’ty

1

1

2

1

1

1

1

1

1

1

1

4

1

1

1

1



Remark

O

O

O

O

O

O

X

O

X

O

O

O

O

O

X

O

O

O

O

O

X

O

O

O

SA

O

O

O

O

O

X

O

O

O

O

O

O

O

O

X

X

Spring Feed Idle

Spring-cam Pick-up

Spring-Pick-up gear

220V

110V

8-6


Samsung Electronics

8.3 Scanner Unit Assembly

0

1

2

3

4

29

7

9

8

10

12

11

12

24

15

17

19

9

5

13

14

16

26

18

20

22

21

23

20

28

27

25

Samsung Electronics



8-7


Scanner Unit Assembly Parts List

22

23

24

25

18

19

20

21

26

27

28

29

14

15

16

17

10

11

12

13

5

7

3

4

No.

0

1

2

8

9

Description

UNIT SCAN

COVER-M-PLATEN

SHEET-WHITE SPONGE

HINGE PIVOT

COVER-M-SCAN UPPER

GLASS SCAN

CBF SIGNAL-CIS FFC

CIS MODULE

SLIDER CIS

IPR CARRIAGE-CIS

HOLDER CIS

SCREW-TAPTITE

BELT-SCANNER

IPR-SHAFT CIS

CAP PULLEY

GEAR-M-PULLEY

SCREW-TAPTITE

BRACKET SCAN MOTOR

MOTOR STEP-SCAN

BRACKET SCAN L

PULLEY IDLE

SPRING ETC-BELT

BRACKET PULLEY

COVER-M-SCAN LOWER

SCREW-TAPTITE

SCREW-TAPTITE

SHEET SCAN LOWER

CBF HARNESS-OPE

LABEL(P)-SHADING

SEC.Code

JC96-03136A

JC63-00454A

JC63-00209A

JC61-00929A

JC63-00452A

JC01-00002A

JC39-00358A

0609-001214

JC66-00714A

JC70-00480A

JC61-00930A

6003-001064

JB66-00007A

JC66-00718A

JC67-00069A

JC66-00721A

6003-000269

JC61-00952A

JC31-00035A

JC61-00941A

JC66-00713A

6107-001194

JC61-00931A

JC63-00453A

6003-000269

6003-000196

JC63-00459A

JB39-40532A

JB68-00644A

1

4

1

1

2

1

1

1

1

1

2

1

1

2

1

1

2

1

1

1

1

1

2

1

Q’ty

1

1

1

1

2



Remark

SCX-4100

X

X

X

X

X

X

X

O

X

X

X

X

X

X

X

X

X

X

X

O

X

X

X

X

SA

O

X

O

O

X

8-8


Samsung Electronics


8.4 Fuser Unit Assembly

24

25

23

0

39

12

10

9

8

38

31

11

35

39

40

7

S3

16

19

20

32

13

6

40

41

18

14

3

2

34

31

4

5

S3

33

1

S2

15

32

39

37

17

26

21

22

28

31

27

40

30

29


8-9

Samsung Electronics


Fuser Unit Assembly Parts List

No.

0

Description

ELA HOU-FUSER_220V

ELA HOU-FUSER_110V

1 COVER-M-FUSER

SEC.Code

JC96-03135B

JC96-03135A

JC63-00478A

JC61-00584A

JC61-00064A

JC72-40361A

JC61-70976A 5 SPRING ETC-FUSER EXIT

6 THERMOSTAT-150

7 PMO-GEAR_EXIT_DRV16

9 RING-CS

11 ELECTRODE_LAMP2

12 ELECTRODE-WIRE_L

13 THERMISTOR-NTC

14 ELECTRODE-WIRE_R

15 CBF HARNESS-FUSER 110V

CBF HARNESS-FUSER 220V

16 GEAR-FUSER

18 ROLLER-HEAT

20 LAMP-HALOGEN_110V

LAMP-HALOGEN_220V

21 ROLLER-M-EXIT F/UP

22 RUBBER EXIT

23 ROLLER-PRESSURE

24 BEARING-PRESSURE/R JC66-10901A

JC61-00453A

27 HOLDER-ACTUATOR

28 PMO-ACTUATOR_EXIT

29

JC72-00382A

JC61-00581A

JC72-00987A

FRAME_FUSER JC61-00946A

30 GUIDE-M-INPUT

31 SPRING-TS

32 NUT-HEXAGON

JC61-00595A

6107-001165

6021-000222

JC47-00005A

JC72-00143A

JC66-00396A

6044-000001

JC66-00397A

JC70-00466A

JC70-00450A

1404-001298

JC70-00449A

JC39-00239A

JC39-00238A

JC66-00037C

JC61-00948A

JC71-00012B

JC61-00947A

4713-001182

4713-001183

JC66-00380A

JC73-00017A

JC66-00731A

34 PLATE-P-CLAW

35 COVER-LAMP_L

JC61-00605A

JC63-00521A



Q’ty

1

1

SA

O

O

Remark

220V

110V

4

2

1 O

1

1

X

X

1 X

1 O

1 X

1 O

2

2

O

X

1 X

1 O

1 O

1 O

1 O

1 X

X

1 O

2 X

O

3 X

1 X

1 O

1 X

1 X

5 X

1 X

4 X

1 X

110V

220V

110V

220V

8-10


Samsung Electronics


Fuser Unit Assembly Parts List

No.

Description

36 WASHER-PLAIN

37 LABEL(R)-HV FUSER

38

39

40

41

SCREW-TAPTITE

SCREW-MACHINE

SCREW-TAPTITE

SCREW-TAPTITE

SEC.Code

6031-001051

JC68-00407A

6006-001078

6006-001193

6603-000269

6003-000196



Remark Q’ty SA

1 X

1 X

6

1

1

5

X

X

X

X

Samsung Electronics


8-11


8.5 Middle Cover Unit Assembly

0

1

3

4

2

5 6

5

7

9

8

10

11

12

8-12


Samsung Electronics


Middle Cover Unit Assembly Parts List

5

6

3

4

No.

0

1

2

7

8

9

10

11

12

Description

MEA UNIT-COVER MIDDLE

COVER-M_MIDDLE

PMO-STACKER

STOPPER-M-LEVER

SPRING ETC-TS-CHARGE APOLLO

PMO-SUB_M_STACKER

PMO-BUSHING_F/DOWN

WINDOW-M LCD

KEY-M_START

KEY-M_STOP

KEY-M_MENU

PBA SUB-PANEL

COVER-M-PANEL

SEC.Code

JC97-01958A

JC63-00473A

JC72-01340A

JC61-00949A

JC61-00026A

JC72-01343A

JC72-00387A

JC64-00153A

JC64-00151A

JC64-00150A

JC64-00152A

JC92-01586A

JC63-00474A



Remark

2

1

1

1

Q’ty

1

1

1

1

1

1

1

1

1

X

X

X

X

X

O

SA

O

X

X

X

X

O

X

Samsung Electronics


8-13


8.6 Drive Unit Assembly

0

7

6

8

1

9

HARNESS-MOTOR

4

5

4

5

3

2

Drive Unit Assembly Parts List

8

9

10

5

6

7

2

3

4

No.

0

1

Description

ELA UNIT-DRIVE

BRACKET-P-GEAR 1400

GEAR-RDCN 53/26

GEAR-RDCN 113/33

GEAR-RDCN 57/18

WASHER-PLAIN

BRACKET-P-MOTOR 1400

GEAR-RDCN 103/41

GEAR-RDCN 90/31

MOTOR STEP 7.5

PMO-IMPELLER_DRV

SEC.Code

JC96-03138A

JC61-00598A

JC66-00388A

JC66-00391A

JC66-00389A

6031-000023

JC61-00599A

JC66-00390A

JC66-00392A

JC31-00020A

JC72-00825A



Remark

1

1

1

2

1

1

1

1

2

Q’ty

1

1

O

O

X

X

X

O

O

O

O

SA

O

O

8-14


Samsung Electronics


8.7 Cassette Unit Assembly

0

4

5

6

7

8

1

3 2

19

20

10

9

11

12

14

16

17

15

13

18


8-15

Samsung Electronics


Cassette Unit Assembly Parts List

No.

0

1

2

15

16

17

18

11

12

13

14

19

20

7

8

9

10

4

5

6

Description

MEA UNIT-CASSETTE_MB

ADJUST-M-CASSETTE_L

ADJUST-M-CASSETTE_R

SEC.Code

JC97-01914A

JC70-00300A

JC70-00301A

IPR-PLATE PAD

RPR-FRICTION PAD

SHEET-HOLDER PAD

HOLDER-M-PAD

SPRING ETC-LOCKER,PLATE

PLATE-P-KNOCK_UP

SPRING-CS

JC70-00314A

JC73-00140A

JC63-00290A

JC61-00580A

JG61-70531A

JC61-00603A

6107-001166

PMO-EXTENSION SMALL

GUIDE-M-EXTENSION L2

FRAME-M_CASSETTE

PMO-PLATE_LOCKER

JC72-00971A

JC61-00918B

JC61-00876A

JC72-00972A

SPRING ETC-EXIT ROLL FD

ROLLER-M-IDLE FEED

JC61-70911A

JC66-00529A

SPRING-ES 6107-001047

GUIDE-M_CASSETTE JC61-00944A

CAM-M-KNOCK_UP

RPR-PAD CASSETTE

JC66-00719A

JC73-00141A



Q’ty SA Remark

1

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

2

1

1 X

2 O

X

X

X

X

O

X

X

O

X

X

O

O

O

O

O

X

O

O

O

8-16


Samsung Electronics

9

9. Block Diagram

Block Diagram

Samsung Electronics


9-1

1 0

Connection Diagram

Samsung Electronics


10-1

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