Samsung SCX-4216, SCX-4116, SCX-4016 Service manual

SERVICE

DIGITAL LASER MFP SCX-4216F

SCX-4116 SCX-4016

Manual

DIGITAL LASER MFP CONTENTS

1. Precautions

2. Reference Information

3. Specifications

4. Summary of product

5. Disassembly and Reassembly

6. Alignment and Adjustments

7. Troubleshooting

8. Exploded Views and Parts List

9. Block Diagram

10. Connection Diagram

Printed in Korea.

VERSION NO. : 1.00 CODE : JC-0095A

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

“http://itself.sec.samsung.co.kr”

- This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable

International and/or domestic law. -

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Samsung Electronics

Precautions

Service Manual

1. Precautions

The cautions in the below are items needed to keep in mind when maintaining and servicing. Please read carefully and keep the contents in mind to prevent accidents while servicing and to prevent that the machine gets damage.

1.1 Warning for safety.

(1) Request the service by qualified service person. The service for this machine must be performed by a service person who took the additional education of this field. It is dangerous if unqualified service person or user tries to fix the machine.

(2) Do not rebuild it discretionary. Do not attach or change parts discretionary. Do not disassemble, fix, and rebuilt it. If you do, the printer will not work and electric shock or a fire can occur.

(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 conforming 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 precautions 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 LASERSTRLNING VED BNING, NR

SIKKERHEDSBRYDERE ER UDE AF FUNKTION. UNDG UDSAETTELSE FOR STR LNING.

ADVARSEL. - USYNLIG LASERSTRLNING NR DEKSEL

PNES. STIRR IKKE INN I STR LEN.

UNNG EKSPONERING FOR STR LEN.

VARNING - OSYNLIG LASERSTRLNING NR 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 LASERS TEILYLLE L KATSO S TEESEEN.

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Precautions

Samsung Electronics

Service Manual

1.2 Caution for safety

1.2.1 Precaution related noxious material

It is possible to get harmed from noxious material if you ignore the below information.

(1) Do not touch the damaged LCD. This PRINTER has LCD in control panel. Noxious liquid to human body exists in the

LCD. If it is got into mouth, immediately see a doctor. If it is got into eyes or on skin, immediately wash off over 15 minutes with flowing water and see a doctor.

(2)

The toner in a printer cartridge contains a chemical material, which might harm human body if it is swallowed. Please keep children out of the toner cartridge.

1.2.2 Precaution related electric shock or fire

It is possible to get electric shock or burn by fire if you don't follow the instructions of the manual.

(1) Use exact voltage. Please do use an exact voltage and wall socket. If not, a fire or an electric leakage

can be caused.

(2) Use authorized power code. Do use the power code supplied with PRINTER. Afire can be occurred

when over current flows in the power code. (3) Do not insert many cords into a outlet. If do, a fire can occur due to a over flow of current in an outlet. (4) Do not put water or extraneous matter in the PRINTER. Please do not put water, other liquid, pin, clip,

etc. It can cause a fire, electric shock, or malfunction. If it happens, turn off the power and remove the

power plug from outlet immediately. (5) Do not touch the power plug with a wet hand. When servicing, remove the power plug from the outlet

and do not insert or remove it with a wet hand. Electric shock can occur. (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) Management of power cord. Do not bend, twist, bind or place other materials on it. Do not use stales

around printer. If the power code gets damage, a fire or electric shock can occur. A damaged power

code must be replaced immediately. Do not repair the damaged part or reuse it. Repairing cord with

plastic tape can cause a fire or electric shock. Do not spread chemicals on the power code. Do not

spread insecticide on the power code. Afire or electric shock can occurred due to a thin(weak) cover on

the power code. (8) Check whether the power outlet and the power plug are damaged, pressed or chopped. When such

inferiorities are found, repair it immediately. Do not press or chop the cord when moving the machine. (9) Use caution during thunder or lightning storms. It may cause fire or electric shock. Take the power plug

off under these conditions. Do not touch cable and device duing thender or lightening storms. (10) Avoid damp or dusty areas. Do not install the printer in dusty areas or around humidifiers. Afire can

occurr. Clean plug well with dried fabric to remove dust. Fire can occur if water is dropped into the unit or if coverd with dust.

(11) Avoid direct sunlight. Do not install the printer near to a window where it directly contacts to the sun-

light. If the machine contacts sunlight for a long time, the machine will not work properly, because the inner temperature of machine will get higher. A fire can beoccur.

(12) Turn off the power and take off the plug when smoke, a strange smell, or sound from the machine is

detected. Afire can occur if unit is used under these conditions.

(13) Do not insert steel or metal pieces inside/outside of the machine. Do not put steel or metal piece into

the ventila-tor. An electric shock can occur.

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Precautions

Service Manual

1.2.3 Precaution related to handling the machine.

If you ignore this information, you could get harm and machine could be damaged.

(1) Do not install unit on uneven surfaces or slanted floors.

Please confirm unit is correctly balanced after installation. Machine may fall ove when not balanced correctly.

(2) Be careful not to insert a finger or catch your hair in the rotating unit.

Be careful not to insert a finger or hair in the rotating unit (motor, fan, paper feeding part, etc) while the machine is operation.

(3) Do not place any containers of water or chemical or small metals near the machine. If these objects get

into the inner side a fire or electric shock can be occurred.

(4) Do not install machine in areas where moisture or dust exists. For example, do not install machine near

open windows, damage may be caused by these conditions.

(5) Do not place candles, burning cigarettes, etc. on the machine. Do not install it near to a heater. A fire

may occur.

1.2.4 Precautions for when assembly/disassembly

Replace parts very carefully. Do remember the location of each cable before replacing parts, inorder to reconnect it afterwards. Please perform the below steps before replacing or disassemblying any parts.

(1) Check the contents stored in the memory. All the information will be erased after the main board is

replaced. Write down and needed information. (2) Disconnect power before servicing or replacing electrical parts. (3) Remove printer cables and power cord. (4) Do use formal parts and same standardized goods when replacing parts. Must check the product name, part code, rated voltage, rated current, operating temperature, etc. (5) Do not use excessive force when looening or tightening of plastic parts. (6) Be careful not to drop small parts or objects in the machine.

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Precautions

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Service Manual

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.

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REFERENCE INFORMATION

Service Manual

2. Reference Information

This chapter describes the reference information for applying this training manual, and it is consisted of the tool list, the abbreviation table, the outline of model, and so on.

2.1 Tool for Troubleshooting

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

DVM(Digital Volt Meter)

Standard: Indicates more than 3 digits.

T weezers

Standard: For general home use, small

type.

Software(Driver) installation CD ROM

Cotton Swab

Standard : For general home use, for

medical service.

Cleaning Equipments a IPA (Isopropyl Alcohol)dry cloth or a soft stuff neutral detergent.

Electronic Scale

Standard: Equipment to check the weight

of consumables supplied by Samsung Electronics. (The gram unit can be measured.)

Driver

Standard : "-" type, "+" type (M3 long, M3

short, M2 long, M2 short).

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Service Manual

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.

AC Alternating Current ADF Automatic Document Feeder ASIC Application Specific Integrated Circuit ASSY assembly BIOS Basic Input Output System CCD Charge Coupled Device CMOS Complementary Metal Oxide Semiconductor CN connector CON connector CPU Central Processing Unit dB decibel dbA decibelampere dBM decibel milliwatt DC direct current DCU Diagnostic Control Unit DPI Dot Per Inch DRAM Dynamic Random Access Memory DVM Digital Voltmeter ECP Enhanced Capability Port EEPROM Electronically Erasable Programmable Read

Only Memory EMI Electro Magnetic Interference EP electrophotographic EPP Enhanced Parallel Port F/W firmware GDI graphics device interface GND ground HBP Host Based Printing HDD Hard Disk Drive HV high voltage HVPS High Voltage Power Supply I/F interface I/O Input and Output IC integrated circuit

IDE Intelligent Drive electronics or Imbedded

Drive Electronics

IEEE Institute of Electrical and Electronics

Engineers. Inc IPA Isopropy Alcohol IPM Images Per Minute LAN local area network lb pound(s) LBP Laser Beam Printer LCD Liquid Crystal Display LED Light Emitting Diode LSU Laser Scanning Unit MB Megabyte MHz Megahertz NVRAM Nonvolatile random access memory OPC Organic Photo Conductor PBA Printed Board Assembly PCL Printer Command Language , Printer Control

Language PDL Page Discription Language PPM Page Per Minute PTL Pre-Transfer Lamp Q’ty Quantity RAM Random Access Memory ROM Read Only Memory SCF Second Cassette Feeder SMPS Switching Mode Power Supply SPGP Samsung Printer Graphic Processor SPL Samsung Printer Language Spool Simultaneous Peripheral Operation Online SW Switch Sync Synchronous or synchronization USB Universal Serial Bus

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REFERENCE INFORMATION

Service Manual

2.3 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.)

2.3.1 A4 5% Pattern

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REFERENCE INFORMATION

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Service Manual

2.3.2 A4 2% Pattern

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REFERENCE INFORMATION

Service Manual

2.3.3 A4 IDC 5% Patten

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Service Manual

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Specifications

Service Manual

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

Items Descriptions Remarks

Major Features SCX-4016 Copier, Print, Scan Without ADF

SCX-4116 Copier, Print, Scan With ADF SCX-4216F Copier, Print, Scan, Fax With ADF

Size (W*D*H) SCX-4016 474x436x353mm

SCX-4216F/41 16 474x436x417mm

Weight SCX-4016 11.7 Kg (25.8 lbs) With Toner Cartridge

SCX-4216F/4116 13 Kg (28.8 lbs) With Toner Cartridge LCD 16*2 Char I/O Interface USB1.1 & IEEE1284 Power Consumption Printing 350W

Sleep Mode 20W Power Switch Yes Noise Operating SCX-4016 52 dBA

SCX-4216F/4116 55 dBA

Standby SCX-4016 39 dBA

SCX-4216F/4116 39 dBA Warm Up Less than 42 seconds Approval Class B Device Memory 16 MB

(Printer : 8M, Fax : 4M,

Scan : 2M, System : 2M)

Internal N/W Connectivity N/A

3.2 Print Specification

Items Descriptions Remarks

Print Speed 17ppm Letter size, 5%

Character Pattern Print Method Laser Scanning Unit + Electro Photography Print Language SPL Power Save Yes(5/10/15/30/45min.) Resolution Normal 600 *600dpi

RET No Toner Save Yes Memory 8 MB FPOT Stand by Approx. 12 seconds

Power Save Less than 54 seconds Printable Area 207.6 X 270.6 mm (Letter) Toner Save Yes

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Specifications

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3.3 Scan Specification

Items Descriptions Remarks

Halftone(Gray Scale) 256 level Scan Method Color CCD ITU-T #1 Chart Scan Speed ADF 25 sec Text/Mixed Mode : (seconds/scan) (SCX-4216F/4116) B/W Letter & 300dpi.

(USB)

72 sec Photo Mode : Gray

Letter & 300dpi. (USB)

Platen 23 sec

Resolution Optical 600 x 600 dpi

Enhanced USB 4800 x 4800 dpi

Parallel 2400 x 2400 dpi Halftone 256 level Scan Width Width Max.216mm (8.5")

Length(Adf) Max. 356mm (14.0") Length(Platen) Max. 297mm (11.7")

Scan-to E-mail, Image, OCR, FAX, WEB

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Specifications

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3.4 Copy Specification

Items Descriptions Remarks

Copy Quality Selection Text 600x300dpi or Original Image type Auto 600x300dpi selection Mode Photo 600x600dpi for Platen / 600x300dpi for ADF

Other -

FCOT Platen Power Save Approx. 54 seconds

Stand by Approx. 12 seconds

ADF Power Save Approx. 54 seconds

Stand by Approx. 17 seonds Copy Speed Text Mixed SDMC 16 cpm/A4, 17 cpm/LTR / Letter MDMC 7 cpm/A4, 17 cpm/LTR

Photo SDMC 16 cpm

MDMC 4 cpm

Resolution Scan 600*600dpi

Print 600*600dpi Zoom Range 25% to 400 % Multi Copy 1~99 Preset Yes Contrast Control 3 level(by LED) Copy Mode TEXT/MIXED/PHOTO Collation Copy Yes(300dpi only) SCX-4216F/4116 Auto return to default mode Yes(after 1 minute) N-up copy 2-up, 4-up SCX-4216F/4116 AutoFit Copy Yes Platen Only Clone Yes Platen Only Poster Yes Platen Only

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Specifications

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Service Manual

3.5 Telephone Specification (SCX-4216F Only)

Items Descriptions Remarks

Handset No On hook Dial Yes Search Yes (Phone Book) 1-Touch Dial 10EA(3*4 Numeric Key) Auto dial 100 locations (Using 3*4 buttons) TAD I/F No Tone/Pulse Selectable in Tech Mode Pause No Auto Redial Yes Last Number Redial Yes Distinctive Ring No Caller ID No External Phone Interface No Report & List Print out Tx/Rx Journal Yes

Confirmation 2 types available

(with Image TCR, w/o image TCR) Help List No Auto Dial List Yes System Data List List all user setting

Sound Control Ring Volume Yes(Off,Low,MED,HIGH)

Key Volume Yes(On,Off) Speaker Yes(On,Off)

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Specifications

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3.6 Fax Specification (SCX-4216F Only)

Items Descriptions Remarks

Compatibility ITU-T G3 Communication System PSTN/PABX Modem Speed 33.6 Kbps TX Speed Approx. 3 sec Compression MH/MR/MMR/JPEG ECM Y es Resolution Std 203 x 98 dpi

Fine 203 x 196 dpi S.Fine 300 x 300 dpi

Scan Speed(ADF) Std Approx. 5sec/LTR

Fine Approx.7.5sec/LTR

S.Fine Approx.7.5sec/LTR Rx fax duplex print out No Multiple page scan speed Approx. 7 ppm/LTR Receive Mode Fax, TEL Memory Capacity 4 MB (320 pages)

Optional Memory No

Max locations to 99 locations

store to 1 Group Dial

Fax Forward Yes (On/Off)

Broadcasting Up to 59 locations

Forced Memory TX

No Cover page No Delayed fax Yes Memory RX Yes

Functions Voice Request No

TTI Yes RTI Y es Polling No Earth/Recall No Auto Reduction Yes RDC No Junk Fax barrier Yes Security Mode Yes Battery Backup Yes (Min. 15 minutes) Back up Fax memory

and Real Time data

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Specifications

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Service Manual

3.7 Paper Handling

3.8 Software

Items Descriptions Remarks

Capacity Main Tray 250sheets (20lbs) Bypass Single Sheet

Optional Cassette No Output Capacity 150Sheets/20lb, 1Sheet/Face up Output Control Face down Paper Size Main Tray

CST : A4,Letter,Legal, Folio,Executive,B5

Bypass Bypass : Envelope6 3/4,7 3/4, #9, #10,

DL,C5,B5

Paper Weight Main Tray 16~24 lb.

Bypass 16~32 lb.

Paper Path Standard output Bottom to Middle Front (FIFO)

Straight Through Face up, Single Sheet

Paper Size Max 216 x 356mm(8.5"x14")

Min 76 x 127mm(3"x5")

Output Stacker Paper Extension

Document Fixed

Input Guide Bypass Tray Adjustable

Main Tray Universal Document Adjustable

ADF Paper Weight 12.5~28lb

Capacity 30 sheets(20lb) Document Size Widtth 148mm - 216mm(5.8" - 8.5") Document Size Length 127 mm - 356mm(5" - 14.0")

Items Descriptions Remarks

Compatibility DOS No

Win 3.x No Win 95 Yes Win 98&WinME Yes Win NT 4.0 Yes Win 2000 Yes Win XP Yes WHQLfor Printer Only Mac Yes Mac Printer Only Linux No

Driver Printer SPL

TWAIN Yes PC-FAX No PC Fax is only avail-

able through PC Modem

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Specifications

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3.9 Consumables

Items Descriptions Remarks

Type Single Cartridge How to install Front door open and front loading Toner Life Initial 1,000 sheets Initial toner life could

running 3,000 sheets be different accroding

to country

Level Sensor No

Toner Count Yes

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Samsung Electronics

SUMMARY OF PRODUCT

Service Manual

4. Summary of Product

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

4.1 Printer Components

4.1.1 Front View

Document Guides

Document Input Tray

Document Output Tray

Control Panel

Paper Tray

Front Cover

Paper Level Indicator

Bypass Tray

Paper Output Extension

Automatic Document Feeder

(for SCX-4116/4216F)

Document Cover

Document Glass

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Service Manual

4.1.2 Rear View

AC Power Cord

Connector

Parallel

Connector

Power Switch

USB Connector

Telephone Line Connector

(for SCX-4216F)

Rear Output Slot

(Face up)

Rear Cover

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SUMMARY OF PRODUCT

Service Manual

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4 653

4.1.3 Control Panel

< SCX-4216F >

C O P Y

Adjusts the brightness of the documents for the current copy job.

Selects the document type for the current copy job.

Allows you to use special copy features, such as Clone, Collation, Auto fit, 2-side, N-up (multiple pages on a sheet) and Poster copying.

Makes a copy smaller or larger than the original.

Selects the number of copies.

Displays the current status and prompts during an operation.

Turns on when the toner cartridge is empty.

Scrolls through the options available for the selected menu item.

Confirms the selection on the display.

Enters Menu Mode and scrolls through the menus available.

Sends you back to the upper menu level.

Stops an operation at any time. In Standby Mode, clears/cancels the copy options, such as the contrast, the image setting, the copy size and the number of copies.

Starts a job.

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F A X

S A V E

Dials a number or enters alphanumeric characters.

Adjusts the resolution of the documents for the current fax job.

Allows you to send a fax to multiple destinations.

• Allows you to store frequently-dialed fax numbers using a one or two-digit speed dial or group number for automatic dialing and edit the stored numbers.

• Allows you to print a Phonebook list.Redials the last number in Standby Mode or inserts a pause into a fax number in edit mode.

Engages the telephone line.

Allows you to save on toner by using less toner to print a document.

Allows you to save on call costs by sending a fax at a preset toll-saving time. Using this feature, you can take advantage of lower long distance rates at night, for example.

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SUMMARY OF PRODUCT

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543

< SCX-4016/4116 >

Adjusts the brightness of the documents for the current copy job.

Selects the document type for the current copy job.

Displays the current status and prompts during an operation.

Turns on when the toner cartridge is empty.

Scrolls through the options available for the selected menu item.

Confirms the selection on the display.

Enters Menu Mode and scrolls through the menus available.

Sends you back to the upper menu level.

Stops an operation at any time. In Standby Mode, clears/cancels the copy options, such as the contrast, the image setting, copy size and the number of copies.

Starts a job. Allows you to use special copy features, such as Clone, Collation, Auto fit, 2-side,

N-up (multiple pages on a sheet) and Poster copying. Makes a copy smaller or larger than the original.

Selects the number of copies. Allows you to save on toner by using less toner to print a document.

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Service Manual

4.2 System Layout

4.2.1 Feeding section

There is the universal cassette, which automatically loads paper and the manual feeder, which supplies paper one by one. The cassette has the friction pad which separates paper one by one, and it has a sensor, which functions to check the existence of loaded paper.

- 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

It consists of the PTL (pre-transfer lamp) and the Transfer Roller. The PTL sends a light to the OPC drum, drops the current on the drum surface and improves the transfer efficiency. The transfer roller transfers toner from the OPC drum surface to the paper.

- The life span: Print over 60,000 sheets (in 15~30°C)

4.2.3 Driver Ass’y

- Gear driven power unit. By driving the motor, it supplies power to the feeding unit, the fusing unit, and the distributing unit.

4.2.4 Fixing Part(Fuser)

- The fuser consists of the Heat Lamp, Heat Roller, Pressure Roller, Thermistor, and Thermostat. It adheres toner to the paper with pressure and a heat to complete the printing job.

4.2.4.1 Temperature-Intercepting Device (Thermostat)

The thermostat is the temperature-intercepting device, which cuts off the power for preventing an overheating or a fire when the heat lamp or the heat coil of the heat roller is overheated.

4.2.4.2 Temperature Detecting Sensor (Thermistor)

The Thermistor detects the surface temperature of the heat roller, and it maintains the regular temperature of the heat roller by responding to the information of the temperature.

4.2.4.3 Heat Roller

The heat roller transfers the temperature from the heat lamp to the surface to heat the paper which passes the surface. The melted toner cannot stain the heat roller coated with Teflon.

4.2.4.4 Pressure roller

The pressure roller mounted right under the heat roller is made of the silicon resin, and the surface of the roller is coated with Teflon to fuse the toner on the paper when paper passes between the heat roller and the pressure roller.

4.2.4.5 Safety Relevant Facts

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SUMMARY OF PRODUCT

Service Manual

• Protecting device when overheating

- 1st protecting device: H/W cuts off when detecting an overheating

- 2nd protecting device: S/W cuts off when detecting an overheating

- 3rd protecting device: Thermostat cuts off the power

• Safety device

- The power of the fuser is cut off when the front cover is open.

- The overheating safety device for customer

- Maintains the surface temperature of the Fuser Cover under 80°C and has a caution label attached inside of the rear cover where the customer can find it easily.

4.2.5 Scanner

It reads an image with a photosensitive sensor. In hardware aspect, it is consisted of CCD module, Connection board, ADF board (4016 does not have ADF board), AFE (Analog Front End), and Image Processor (Located in CPU), and mechanically, and ADF (Automatic Document Feeder-SCX-4016 does not have ADF function)

• CCD Module Specification

1.Resolution: 600dpi/A4

2.Maximum scan wide: 8.5”

3.Color filter: Red, Green, Blue

4.Output channel: 3 channels (R, G, B)

5.Effective pixel: 5,400 pixel *3

6.Voltage: 24V & 5V

7.Pre-heating time: Maximum 30 seconds (70% of light reach to it)

8.The life span of a lamp: 30,000 hours (25oC)

• Image Processor Specification

1.Operating frequency: 66MHz

2.Image sensor interface: 200/300/600 dpi CIS or CCD

3.Line time: Copy, FAX, Binary (Lineart, Halftone) PC Scan: 1.5ms/Line Color PC Scan (Grey, 256

Color, True Color): 4.5ms/Line

4.A/D conversion: 10bit conversion

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SUMMARY OF PRODUCT

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Service Manual

4.2.6 LSU (Laser Scanner Unit)

The LSU unit is controlled by the video controller. It scans the video data received from video controller with laser beam by using the rotation principal of the polygon mirror to create the latent image on the OPC drum. It is the core part of LBP. The OPC drum rotates as the same speed as the paper feeding speed. It creates the /HS YNC signal and sends it to the engine when the laser bean of the LSU reaches the end of the polygon mirror, and the engine detects the /HS YNC signal to arrange the vertical line of the image on the paper. After detecting the /HS YNC signal, the image data is sent to the LSU to arrange the its left margin on the paper. The one side of the polygon mirror is one line for scanning.

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SUMMARY OF PRODUCT

Service Manual

4.2.7 Toner Cartridge

By using the electronic photo process, it creates a visual image. In the toner cartridge, the OPC unit and the developer unit are in a body. The OPC unit contains the OPC drum and charging roller. The developer unit contains toner, toner cartridge, 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: None

- OPC Cleaning: Collect the toner by using electric static + FILM OPC

- Management of disusable toner: Collect the toner by using electric static (Clenerless Type- No disusable toner)

- OPC Drum protecting Shutter: None

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

+ 105 hidden pages