scx-4500

ManualSERVICE

SCX-4500SCX-4500/XAZBasic Model : SCX-4500

DIGITAL LASER PRINT The keynote of Product

Slim Size 3 in 1 MFP (SCX-4500)

- Printing Speed : 16PPM(A4), 17PPM(Ltr)- Printing Resolution : 600 x 600dpi- Interface : USB 2.0- OPE : Touch Sensor- Scanner : FLAT-BED CIS(600dpi)- Scan Resolution(Optiacl) : 600 x 2,400dpi- Paper Input Capacity : 100 sheets- Paper Output Capacity : 30 sheets- Engine Life : 50,000 Pages- Toner : Initial(1K) / Sales(2K)

SCX-4500

1. Precautions

1.1 Safety Warning 1-11.2 Caution for safety 1-21.3 ESD Precautions 1-5

2. Product specification and feature

2.1 Product Specifications 2-12.1.1 Product Overview 2-12.1.2 Specifications 2-12.1.3 Model Comparison Table 2-62.1.4 ACCESSORY 2-8

2.2 Summary of Product 2-92.2.1 Printer Components 2-92.2.2 System Layout 2-162.2.3 System Description 2-172.2.4 S/W Descriptions 2-25

3. Disassembly

3.1 General Precautions on Disassembly 3-13.2 Cover Unit 3-23.3 Cassette 3-53.4 Scanner Unit 3-73.5 LSU Unit 3-113.6 Drive Unit 3-123.7 Main Board 3-133.8 HVPS Board 3-143.9 SMPS Board 3-15

Contents

3.10 Fuser Unit 3-163.11 Transfer Roller 3-17

4. Adjustment and Troubleshooting

4.1 Alignment and Adjustments 4-14.1.1 Control Panel 4-14.1.2 Status of OP Panel 4-24.1.3 Manu Map 4-124.1.4 Report Printing Condition 4-214.1.5 Table. Periodic Images according to Rollers 4-214.1.6 Paper Path and Jam Error Solution 4-224.1.7 Error Messages 4-29

4.2 Troubleshooting 4-304.2.1 Procedure of Checkig the Symptoms 4-304.2.2 The cause and solution of image quality 4-314.2.3 The cause and solution of the paper feeding 4-434.2.4 Copy Problems 4-494.2.5 The cause and solution of the malfunction 4-52

5. Exploded Views & Parts List

5.1 Main 5-2 5.2 Scanner Unit 5-45.3 OPE Unit 5-6 5.4 Cover Lower 5-8 5.5 Frame Upper 5-10 5.6 Frame Lower 5-12 5.7 Main Drive 5-16 5.8 Fuser 5-18

Continued

5.9 Cassette 5-20

6. System Diagram

6.1 Block Diagram 6-16.2 Connection Diagram 6-2

7. Reference information

7.1 Tool for Troubleshooting 7-17.2 Acronyms and Abbreviations 7-27.3 Select a location for the printer 7-47.4 Sample Tests Patterns 7-57.5 Parts Life Cycle Maintenance Table 7-6

7.5.1 Parts Life Cycle Maintenance Table 7-67.5.2 Toner Cartridge Criterion 7-6

7.6 Model Information 7-77.6.1 Understanding for Model Code 7-77.6.2 Understanding Material Code & Name 7-87.6.3 F/W Upgrade Method 7-8

Continued

Precautions

Samsung ElectronicsService Manual 1-1

111. PrecautionsIn order to prevent accidents and to prevent damage to the equipment please read the precautions listedbelow 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 suitablytrained and qualified service engineer.

(2) Use only Samsung replacement partsThere 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 hazards.

(3) Laser Safety StatementThe Printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR, chapter 1 Subchapter J forClass 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. Thelaser system and printer are designed so there is never any human access to laser radiation above a Class Ilevel 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. Thereflected 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 GEÖFFNET. �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 LASERSTRÅLNING VED ÅBNING, NÅR �SIKKERHEDSBRYDERE ER UDE AF FUNKTION. �UNDGÅ UDSAETTELSE FOR STRÅLNING.

ADVARSEL. - USYNLIG LASERSTRÅLNING NÅR DEKSEL �ÅPNES. STIRR IKKE INN I STRÅLEN. �UNNGÅ EKSPONERING FOR STRÅLEN.

VARNING - OSYNLIG LASERSTRÅLNING NÄR DENNA DEL �ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD. �BETRAKTA EJ STRÅLEN. STRÅLEN ÄR FARLIG.

VARO! - AVATTAESSA JA SUOJALUKITUS OHITETTAESSA �OLET ALTTIINA NÄKYMÄTTÖMÄLLE LASER-�SÄTEILYLLE ÄLÄ KATSO SÄTEESEEN.

Samsung ElectronicsService Manual

Precautions

1-2

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 skinshould be avoided, wash any splashes from eyes or skin immediately and contact your doctor. If the liquid gets intothe 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 harmfuland 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 or electricshock.

(2) Use only the power cable supplied with the printer. Use of an incorrectly specified cable could cause the cableto 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 toa fire.

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

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

(6) Use caution when inserting or removing the power connector. The power connector must be inserted com-pletely otherwise a poor contact could cause overheating possibly leading to a fire. When removing the powerconnector grip it firmly and pull.

(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 andcause 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 berepaired 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 recommends that this machine be disconnectedfrom the power source when such weather conditions are expected. Do not touch the machine or the powercord 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 machinenear 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 possiblyleading 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 couldmake contact with a high voltage conductor inside the machine and cause an electric shock.

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 causethe printer to tip or fall.

(2) The 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 ifspilled 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 ahumidifier or heater. Damage could be caused 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 alsocable 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 themainboard 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 temperaturerating 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.


Precautions

1-4

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 cooldown before disassembly.

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

When operating a printer, do not put hand or hair into the rotating parts (Paper feeding entrance, motor, fan,etc.). If do, you can get harm.

(3) When you move the printer.

This printer weighs 8.6kg including toner cartridge and cassette. Use safe lifting and handling techniques. Usethe 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 8.6Kg, 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.

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 fieldeffect transistors, and semiconductor “chip” components.The techniques outlined below should be followed to help reduce the incidence of component damage caused bystatic 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 anyelectrostatic charge on your body by touching a known earth ground. Alternatively, employ a commercially avail-able wrist strap device, which should be removed for your personal safety reasons prior to applying power to theunit under test.

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

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” cangenerate electrical charges sufficient to damage ESDs.

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

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

7. Immediately before removing the protective shorting material from the leads of a replacement ESD, touch the pro-tective 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 com-pletely plugged or soldered into the circuit.

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

Product specification and feature

Service Manual 2-1Samsung Electronics

22

2.1.2 Specifications

Product Specifications are subject to change without notice. See below for product specifications.

2.1.2.1 General Spec.

- 16ppm (A4) / 17ppm (Ltr.)- USB 2.0- 100 sheet cassette tray- Up to 600 x 600 dpi

- FCOT : Less than 15 sec- 50 to 199% zoom range- Multi copy : 1~99- 16ppm (A4) / 17ppm (Ltr.)

- Resolution : 600x2400 dpi (optical)4800x4800 dpi (enhanced)

- 256 levels gray scale- Up to 600 x 600 dpi

NO SPEC. SCX-4500

1 SIZE(WxDxH) 332*393*164.5mm

BOX SIZE(WxDxH) 421*553*261mm

2 NOISE WARMING UP 43dBA

READY 38dBA

PRINTING/COPYING 45dBA

3 WEIGHT NET(Inc. CRU) 9.3kg

GROSS(Inc. PACKING) 11.5kg

2. Product specification and feature

2.1 Product Specifications

2.1.1 Product Overview

Printer

Copy

Scan

Service Manual


2-2 Samsung Electronics

Item Specification and Description

Warm up Less than 15 SecondsCPU Chorus II 66Mhz RiscDevice Memory 8 MB (Non-extendable)Display 13 X 5 LED MatrixInterface USB 2.0Power rating AC 110~127V or AC 220~240V

See the Rating label on the machine for the correct voltage, frequency(hertz) and type ofcurrent for your machine

Power consumption Average operation mode : Less than 350WSleep mode : less than 8.12W

Operating environment Temperature : 10°C to 32°CHumidity : 20% to 80% RH

Maintenance Cycle Paper Feeding Roller : 50K Pages PrintTransfer Roller : 50K Pages PrintFuser : 50K Pages Print

Product Life 50KToner Cartridge Life initial : 1000 Pages(ISO 19752 Standard Pattern) High Yield : 2000 PagesDuty cycle Monthly print volume : Up to 4000 pages




Paper Size Width = 105 ~ 216 mmLength = 148.5mm~297mmPaper In Capacity Cassette : 100 sheet (75g/m©˜,20lb)Paper Out Capacity 30 sheets(75g/m©˜,20lb)Printing Method Laser Beam PrintingEffective Printing Width 208 mmPrinting Resolution 600 X 600 dpiPrinting Speed 16 ppm(A4)/17 ppm(Ltr)FPOT Standby 12 sec(5% Text) Power save 15 secEmulation SPL(GDI)Toner Check Sensor NoneOperating System Windows 2000/XP/2003/Vista

Mac. 10.3/10.4, Various Linux OS PC interface USB 2.0Toner Save Yes


USB 2.0 USB No cable included (Note : SEC will NOT supply any of interface cable.)Minimum PC Spec Pentium2 400Mhz

64MB RAM Hard Disk : 300 free disk space

2.1.2.2 Printer Spec.

1) Printing

2) PC Interface

Service Manual




Speed SDMC [Single Document Multiple Copy(Text,Mixed Mode)] : 17 CPM/Ltr, 16 CPM/A4SDMC [Single Document Multiple Copy(Photo Mode)] : 17 CPM/Ltr, 16 CPM/A4

Resolution Text, Mixed : 600 X 300 Dpi (PLATEN)Photo : 600 X 600 Dpi (PLATEN)

FCOT Power Save : 15 Seconds(Platen)Stand-by : 15 Seconds(Platen)

Gray 256 LevelsZoom Range 50~ 199 %Multi Copy 1~99Preset YesContrast 5 Level LED MatrixCopy Mode Text/Mixed/PhotoCollation Copy NAN-up Copy NAAuto Fit Copy NAClone NAPoster NA2 side copy NA

3) Copy


Compatibility TWAIN standard/ WIA standardScan Method Color CISColor Scan YesResolution Optical : 600 X 2400 dpi / Enhanced : 4800 X 4800 dpiPC Scan Speed Lineart/Halftone : 15 sec / Gray : 30 sec / Color : 75 secGray Scale 256 LevelsEffective Scanning Width 208 mm(8.2 inches)Effective Scanning Length PLATEN 297 mm(11.7 inches)Scan To E-mail, Image, OCR, WEB <= SmarThru IV

4) Scan




Quick Set-Up guide YesOwners Manual Yes, 1CD User guideBundle s/w SmarThru 4Toner Cartridge 1 EADrum Unit N/APower Cable YesIn Out Guide NoPrinter Cable NoUSB Cable No(Except Korea)

5) Accessory

Service Manual



2.1.3 Model Comparison Table

Model (SEC)

Mech Comparison (SCX-4500/ML-1630)

Laser MFP SCX-4500 Laser Printer ML-1630

General Size (W*D*H) 332*393*164.5mm 332*375.6*121.5mm

Input Capacity 100 sheets

Output Capacity 30 sheets

Engine Life 50,000 sheets

Toner 2K (Initial 1K)

Interface USB 2.0

Dimension (W x D x H) Max 45 dBA

Printer Speed 16ppm(A4)FPOT Less than 15 sec Less than 15 sec

Copy Resolution 600x2400 dpi XSpeed 16cpm(A4)@SDMP X

Scan Resolution 600 dpi XScan Module Color CIS X

UNIT Part Logan Swan

SCX-4500 ML-1630



Competitor Model

Samsung Brother HP

SCX-4500 DCP-7020 LJ-1005

General Size (W*D*H) 332*393*164.5mm 432*395*294mm 437*363*308mmInput Capacity 100 sheets 250 sheets 150 sheetsOutput Capacity 30 sheets 100sheets 100 sheetsEngine Life 50,000 sheets - -

Toner 2K (Initial 1K) 2.5K(drum 12K) 2KInterface USB 2.0 USB 1.1, Parallel USB 2.0Dimension Max 45 dBA Max 53dBA Max 49dBA(W x D x H)

Printer Speed 16ppm(A4) 20ppm(A4) 14ppm(A4)FPOT Less than 15 sec 10sec 15 sec

(from ready)Copy Resolution 600 dpi 600 dpi 600 dpi

Speed 16cpm(A4) 16cpm(A4) 16cpm(A4)Scan Resolution 600 dpi 600 dpi 600 dpi

Scan Module Color CIS Color CIS Color CIS

Service Manual



2.1.4 ACCESSORY

No. Item Code Quantity

1 INA-ACESSORY JC99-02061D -2 PE-BAG 6902-000809 13 LABEL(P)-BLANK 90*25 JC68-01584A 14 COVER PAPER JC61-02123A 15 POWER CORD 3903-000042 16 USB Cable JC39-00001A 17 Driver-CD JC46-00348A 18 MANUAL-(CARD)WARRANTY CARD JC68-00690A 19 MANUAL-SERVICE CARD JC68-00421A 1

1 COVER PAPER

2 POWER CORD

3 USB Cable

4 Driver-CD

5 MANUAL-(CARD)WARRANTY CARD

6 MANUAL-SERVICE CARD

ACCESSORY BAG

KRA1JC99-02061D C100X8C0028

ED:??SCX-4500/XEV

3903-000042



2.2 Summary of Product

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

2.2.1 Printer Components

2.2.1.1 Front View

1

8

2

3

4

5

6

7

9

11

10

1 control panel 2 scanner lid 3 top cover 4 output tray 5 output support6 tray

7 tray open button8 scanner glass9 top cover lever10 print cartridge11 inner cover

Service Manual



2.2.1.2 Rear View

1

2 3 4

1 rear cover 2 power switch

3 power receptacle4 USB port



2.2.1.2(a) Feeding Section

Feeding Method : Universal Cassette Type

Feeding Standard : Center Loading

Feeding Capacity : Cassette 100 Sheets(75g/ , 20lb Paper Standard)Cassette 1 Sheet(Paper, OHP, etc.)

Paper Detecting Sensor : Photo Sensor

Paper Size Sensor : N/A

2.2.1.2(b) Transfer Ass'y

Life Span : Print over 50,000 Sheets(in 15~30 )

Transfer roller

Service Manual



2.2.1.2(c) Driver Ass'y

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

In SCX-4500 Series, Latch Gear is used for an easy Jam Removal at Gear Drv Fuser

2.2.1.2(d) Fuser Ass'y

Halogen Lamp - Control the Fusing Temperature by Heating

Thermostat - Temperature Intercepting Device, Open 170 c (Receptacle type)

Heat Roller - Teflon Coating

Pressure Roller - Silicon, the Same as one of Oriole (ML-2571N)

Thermistor - Temperature Detecting Sensor



2.2.1.2(e) LSU(Laser Scanner Unit)

2.2.1.2(f) Toner Cartridge

Developing Method : Non-magnetic 1 element contacting method

Toner : Non-magnetic 1 element shatter type toner

Toner remaining amount detecting sensor : None

The life span of toner : 2,000 Sheets(ISO 19752 Standard)

OPC Cleaning : Collect the toner by using cleanning blade

Management of disused toner : Collect the toner by using electric static (Non-Cleaner type)

OPC Drum protecting Shutter : None

Reflection mirrorF -Lens

P/MotorLD PCB

Service Manual



2.2.1.2(g) Scanner Part Layout

Scan Method : 600dpi Color CIS Module

Maximum Scan Width : 216 mm (width of Letter Size)

Effective Scan Length : 297 mm

Scan Line Time : 1.5 msec(mono)

COVER - SCAN LOWER

CIS

MOTOR ASS'Y

COVER PANEL

SHAFT CIS

SLIDER - CIS

TIMING BELT



Panel

Copies

Darkness

Stop/Clear

Start/CopyScan to PC

Reduce/Enlarge

Main LED Light

Error LED Light

Silk ScreenSilk Screen

Guide description

Power Button

Main (Status) Display

Copy Setting Button

Cancel Button

Command Button

Service Manual



TIMINGBELT

PLATENCOVER

WHITESPONGE

PLATENGLASS

FFC

CIS

STACKER

SCANMOTOR

FOOT

SMPSSHIELD

TRANSFER

ROLLER

2.2.2 System Layout



2.2.3 System Description

SCX-4500 is made up of Main Controller and Operation Panel, Scan/Copy Part, SMPS/HVPS part and Engine Part.Main Controller uses Chorus2 for its ASIC, which is on chip micro controller and is composed of 1Mbyte Flash memory and 8Mbyte SDRAM to control 16Bit Bus. Chorus2 is operated by 66MHz Bus Clock thru internal PLL of12MHz system Clock.

2.2.3.1 System Structure

Service Manual



2.2.3.2 Main Controller

SCX-4500 is consisted of ASIC(CPU), scan part and print part and Bus Control. I/O Handling, scan part, each driver,and PC interface are working controlled by the CPU. Main Controller has full capability on Main Board. There are 2 major functions in the CPU which are Controller ASIC andImage Processor.

1) CPU : 16Bit RISC Processor, Chrous II for printers and MFPs is used and controls the system operating each operation block by system program in Flash Memory.

2) Flash Memory : saves system program and each parameter used in system, and downloads the system program byPC Interface.

- Memory : 1 Mbyte- Access Time : 100 nsec

3) SDRAM : used by Print Buffer while printing, Scan Buffer while scanning, and System Working Memory.- Memory : 8 Mbyte - Operating Frequency : 66 MHz

Main Clock and SSCG

Video Clock and SSCG

CPU - Chorus2

SDRAM - 8MB * 1 EA

Flash ROM - 1MB

Scan Motor driver(AN44060)

USB 2.0



2.2.3.3 SCAN Part

SCX-4500 has color scanning functionality and Chorus II and Scan Part is consisted of Signal Controller and ScanMotor Controller.

- Resolution : 600x2400dpi(MAX)- Effective Scanning Length : 216mm- Effective picture elements : 5104(600DPI), 2552(300DPI)- Sensor elements : 5136 dots

2.2.3.4 Motor Contorllor

Bi-polar Motor is controlled by AN44060 Motor Drive IC and is controlled by the output signal of Scan Motor Part.

Service Manual



2.2.3.5 Panel Part

It adapts CY8C21434 Touch IC interfaces through UART and PT6961 LED Driver IC controls 65 LED matrix and 15 status LEDs.

2.2.3.6 Engine H/W configuration

1) Main Board Main Board is consist of Engine and Controller on the one-Board.Main board interfaces PC and communicates with Image Scan and LCD of OPE Panel. Video data comes out fromLSU. it senses and controls motor driving, Fuser high voltage, and sensors.

Touch Sensor IC - CY8C21434



2) SMPS BoardIt is consisted of the SMPS part, which supplies the DC power for driving the system, and the AC heater Controller,which supplies the power to fuser. SMPS has two output channels. Which are 5V and +24V

- AC InputInput Rated Voltage : AC 110V ~ 127V(V1) , AC 220V ~ 240V(V2)Input Voltage fluctuating range : AC 99V ~ 135V / AC 198V ~ 255VRated Frequency : 50/60 HzFrequency Fluctuating range : 47~53Hz(50Hz) , 57~63Hz (60Hz)Input Current : Under 4.0Arms / 2.5Arms (But, the status when lamp is off or rated voltage is inputted/outputted )

AC Input Connector

Heat Lamp1, 2 Connector

Main < - > SMPS Connector

Paper Feed Sensor

Service Manual



- Rated Output Power

NO Items CH1 CH2 Remarks

1 CHANNEL +5V +24.0V2 CONNECTOR PIN CON 2 CON 2

5V PIN: 2 24V PIN: 7, 8GND PIN: 3, 4 GND PIN: 5, 6

3 Rated Output +5V 5% (4.75 5.25V) +24V 10% (21.6 26.4V)4 Max. Output current 1.0 A 2.0 A5 Peak Loading current 1.2 A 2.5 A 1ms6 RIPPLE NOISE Voltage 150mVp-p or less 500mVp-p or less7 Maximum output 5W 48W8 Peak output 6.0W 60W 1ms9 Protection for loading Fuse Protection Shutdown when output

shortage and overflowing current flows 2.8A~6.0Acurrent

3) HVPS BoardThe HVPS part takes 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.

Transfer High Voltage (THV+)- Input Voltage : 24 V DC 10% - Out Voltage : Max +5.0KV 3- Output Voltage Variation : 3 % below(Variation 21.6V 26.4V) - Out Voltage Rising Time : 100 ms Max - Out Voltage Falling Time : 100 ms Max - Transfer Variation Voltage on Environment Variation : +400V ~ 5 KV - Control Method on environment : THV-PWM ACTIVE, transfer Active signal, of environment sensing voltage is input and get feed back current, and recalculate it to resistance.

- Control method on transfer output voltage : It is controlled by changing its duty of THVPWM Signal.

Charge Voltage (MHV)- Input Voltage : 24 V DC 10% - Out Voltage : -1.2KV ~ -1.8KV DC 3% - Out Voltage Rising Time : 50 ms Max - Out Voltage Falling Time : 50 ms Max



- Out Voltage Range : 30 M ~ 1000 M- Output Control Signal(MHV-PWM) : CPU is HV output when PWM is Low

Developing Voltage (DEV)- Input Voltage : 24 V DC 10% - Output Voltage : -220V ~ -450V DC 3%- Output Voltage Fluctuation range : PWM Control - Input contrast of the output stability degree : 3 % or less - Loading contrast : 3 % or less - Output Voltage Rising Time : 50 ms Max - Output Voltage Falling Time : 50 ms Max - Output Loading range : 10M ~ 1000 M- Output Control Signal (BIAS-PWM) : the CPU output is HV output when PWM is low.

Supply - Output Voltage : -520 V ~ -750V DC 3% (ZENER using, DEV ) - Input contrast of the output stability degree : under 3 % - Loading contrast : 3 % or less - Output Voltage Rising Time : 50 ms Max - Output Voltage Falling Time : 50 ms Max- Output Loading range : 10 M ~ 1000 M- Output Control Signal (BIAS-PWM) : the CPU is HV output when PWM is low.

Paper Exit Sensor

+1,300 VTHV

- 430VDEV

- 730VSUP

- 1300 VMHV

- 100VOPC Main < - > HVPS Connector

HVPS board supply high voltage for developing Process.High Voltage controlled by PWM signal from CPU.Paper Exit Sensor exists on HVPS.

Service Manual



4) FUSER AC POWER CONTROLFuser(HEAT LAMP) gets heat from AC power. The 'ON/OFF control' is operated when the gate of the Triac is turnedon/off by Phototriac (insulting part). In other words, the AC Controller is passive circuit, so it turns the heater on/off with taking signal from engine Controller.When the 'HEATER ON' signal is turned on at engine, the LED of Photo Triac takes the voltage and flashes. From the flashing light, the Triac part (light receiving part) takes the voltage, and the voltage is supplied to the gate ofTriac and flows into the Triac. As a result, the AC current flows in the heat lamp, and heat is occurred. On the otherhand, when the signal is off, the photo triac is off, the voltage is cut off at the gate of Triac, the Triac becomes off, andthen the heat lamp is turned off.

- Triac feature :16A, 600V SWITCHING - Phototriac Coupler



2.2.4 S/W Descriptions

2.2.4.1 Overview

The software of Logan system is constructed with1) Host Software part that the application software operated in Window and Web Environment, and2) Firmware parts that is a Embedded software controls printing job.

2.2.4.2 Architecture

Host Software is made up of1. Graphic User Interface that offers the various editing functions to user in Host,2. Driver that translates the received document to a Printing Command language which printer can understand and

transfers data to spooler,3. Stand-alone Application that offers the various printing application, DMS(Document Management System),

RCP(Remote Control Panel), Printer Status Monitor, Network Management in Window system,4. Web-based-Application that offers the same functions as Stand-alone Application and RDC(Remote Diagnosis

Control) in Web environment.

Firmware is made up of1. Application (Emulation) that is a interpreter translate data received from Host to a printing language (PCL, PS, GDI,

etc.) to be able to make the user to take same output as originally one what composed in Host.2. Kernel that control and management the whole procedure include of Control flow and Printing Job before transfer to

Engine system.

Service Manual



2.2.4.3 Data and Control Flow

The above Block Diagram is explained that:

Host Side is made up of 1. Driver that is Windows application software translate printed data to one of printer language and create spooler file,2. Web-based Application that offer a various printer additional functions, management of printing job, printer administra-

tion, Status monitor to monitoring the printer status by real time in Web, independent environment on OS.3. Stand-alone Application that is a similar Window software as same as above 2,4. Port Monitor that manages the network communication between spooler and Network Interface Card, or various addi-

tional application and Network Interface Card,(this is, at first, make communication logical port, manage the data,transfer them from spooler to network port, and offer the result of printing).



Firmware Side is made up of1. Network Interface Card is that relay the communication between Host and kernel using various network protocol,2. Kernel is that manages the flow control of emulation procedure, receiving data from Host or Network card and printing

with engine & rendering job,3. Emulation is that interprets the various output data from selected emulation,4. Engine is that prints rendered bit-map data to paper with required size and type by Kernel.

And then, for Job Spooling function for Multi-User, Multi-Printing that is occurred in Network printing and various addition-al printing functions, this Kernel use max. 10 Queuing systems in a memory.

In Printing, the two procedures are(1) Case of using Parallel or USB Port

After user start to print the wanted document to PCL string or compressed GDI bit-map data, Driver translate theall graphic data of it and send data to host spooler. And then the spooler sends the data stream to the printer viaparallel port or USB port.Kernel receives this data from Host, and then select emulation fit to data and start selected one. After emulationjob end, Kernel sends the output bit-map data to Engine using Printer Video Controller (by clock type for LSU).Engine print the received data to required paper with the sequential developing process.

(2) Case of using Network Interface CardAfter user start to print the wanted document to PCL string or compressed GDI bit-map data, Driver translate theall graphic data of it and send data to host spooler. If so, Port monitor managing network port receives data from spooler and sends a data stream to the NetworkInterface Card.Network interface card receives it and send to Kernel part,Kernel receives this data from Host, and then select emulation fit to data and start selected one. After emulationjob end, Kernel sends the output bit-map data to Engine using Printer Video Controller (by clock type for LSU).Engine print the received data to required paper with the sequential developing process.

The additional printing function are realized in(1) Web environment(2) Window environment.

On addition, Kernel informs a status of printing status and printer status to user made printing job with the StatusMonitor.

Disassembly and Reassembly


333. Disassembly and Reassembly

3.1 General Precautions on Disassembly

When you disassemble and reassemble compo-nents, you must use extreme caution. The closeproximity of cables to moving parts makes properrouting a must. If components are removed, any cables disturbedby the procedure must be restored as close aspossible to their original positions. Before remov-ing any component from the machine, note thecable routing that will be affected.

Whenever servicing the machine, you

must perform as follows:

1. Check to verify that documents are not storedin memory.

2. Be sure to remove the print cartridge beforeyou 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 properposition.

Releasing Plastic Latches

Many of the parts are held in place with plasticlatches. The latches break easily; release themcarefully. To remove such parts, press the hook end of thelatch away from the part to which it is latched.

1. Take out the MEAUNIT-FEED LOWER.

1-1. If necessary, remove the SPRING-ETC ofROLLER-IDLE and take out the GUIDE-FEED-LOWER from the MEAUNIT-FEED LOWER.

2. To remove COVER-REAR, first remove the threescrews.

Service Manual



3.2 Cover Unit

The description of disassembly and reassembly in this manual is listed according to the disassembly procedures.

ROLLER -IDLE



3. Unlatch the latch(2 EA) from the rear bottom of theSET, as shown below.

4. Take out the Toner Cartridge.

5. To Remove the COVER-FUSER DUMMY, removethe two screws and then release the COVER-FUSERDUMMY.

6. To remove the COVER-LEFT, Unlatch the latch(3 EA)of the COVER-LEFT, as shown below.

7. Following 6. procedure, unlatch the rear latch of theCOVER-LEFT.

8. Release the COVER-LEFT.

Service Manual



9. In the same way, release the COVER-RIGHT.

10. Push the button, and take out the Cassette.(Cassette disassembly is referred to Chapter 3.4 indetail.)

11. To remove the COVER- FRONT, first remove thetwo screws.

12. Remove the hinge in the right side of the COVER-FRONT.

13. In the same way, remove the hinge in the left side ofthe COVER-FRONT.

14. Release the COVER-FRONT.



3.3 Cassette

1. Unlatch the 4 latches of the CASSETTE bottom.

2. Release the GUIDE-CASSETTE LOCK from bothside of the CASSETTE.

3. Release the RING CS (2EA) from the GUIDE-CAS-SETTE LOCK

4. Release the GUIDE-REAR.

5. Move the GUIDE-SIDE-L,R to the direction of thearrow.

6. Overturn the CASSETTE, and remove the one screwfrom PINION GEAR.

7. Release the GUIDE-SIDE-L.R.

Service Manual



8. Release the PLATE KNOCKUP HINGE.

9. Release the FRAME CST HINGE.

10. Spin and Release the SPRING CS from the PLATE-KNOCKUP.

11. Release the SHAFT-P-CORE from the PLATE-KNOCKUP.

12. Release the RPR-PAD CASSETTE.( When attach-ing again, Fit the line.

13. Release the GUIDE-KNOCKUP.( When reassem-bling, confirm the operation condition.)

14. Release the SRING ETC-LOCKER PLATE from theboth left and right side of the FRAME CST.

ok ?ok ?ok ?ok ?



3.4 Scanner Unit

1. Release the Harness from the Main board.

2. Release the COVER SCAN REAR of the ScannerUnit.

3. Remove the two screws.

4. Lift up the Scanner Unit with left hand, and releasethe top of the LINK UPPER with right hand.

5. Remove the one screw , as shown below.

Service Manual



6. Pull the LINK UPPER to the direction of arrow, andthen release it from the SET

7. Release the Scanner Unit from the SET.

8. To release the COVER SCAN OPE of the ELAUNIT-SCAN OPE, follow below procedure (9~12)

9. Open the Platen Cover.

10. Release the Top locking of the COVER SCAN OPEby using a tool.

Top

Middle

Bottom

LOCKING 7 POINTLOCKING 7 POINTLOCKING 7 POINTLOCKING 7 POINT



11. Release the Top/Middle locking of the COVERSCAN OPE.

12. Release the Bottom locking of the COVER SCANOPE.

13. To remove the COVER SCAN OPE of the ELAUNIT-SCAN OPE, remove the Harness OPE fromthe COVER SCAN OPE.

14. Release the ELAUNIT-SCAN OPE from theCOVER-SCAN UPPER .

15. Push up the ELAUNIT-CIS to the direction of thearrow.

16. Release the TIMMING GEAR, as shown below.

TopMiddle TopMiddle

BottomBottom

Service Manual



17. Remove the HARNESS-CIS-FFC from the ELAUNIT-CIS.

18. Remove the SHAFT CIS.

19. Release the PULLY IDLE.

20. To remove the ELAUNIT-SCAN DRIVE, remove thethree screws and release it with the connectedcable.

HARNESS-CIS-FFC



3.5 LSU Unit

1. To remove the ELAUNIT LSU from the ELAUNIT-FRAME UPPER, remove 4 screws that is under theWHITE-SHEET-SPONGE. First remove 2 screws tothe left side.

2. Remove the 2 screws to the right side.

3. Release the the ELAUNIT LSU from the ELAUNIT-FRAME UPPER.

WHITE-SHEET-SPONGE

Service Manual



3.6 Drive Unit

1. To remove the ELAUNIT DRIVE, remove the twoscrews of the LINK-RAIL UPPER and release it.

2. Remove the six screws and pull the ELAUNIT DRIVEto the direction of arrow.

3. Remove the HARNESS-MOTOR from the ELAUNITDRIVE.



3.7 Main Board

1. Unplug the Harness, as shown below.

2. Remove the 4 screws, and release the Main Boardfrom the SET.

Service Manual



3.8 HVPS Board

1. To remove the HVPS Board, remove the 4 screwsand release the COVER HVPS.

2. Turn the HVPS Board to the direction of the arrow.

3. Remove the HARNESS-HVPS from the HVPSBoard, as shown below.

HVPS Board



3.9 SMPS Board

1. To release the SMPS Board, first remove the 8screws.

2. Lift up the SMPS Board as shown the below.

3. Remove the Harness from the SMPS Board.

4. Remove the 2 screw.

5. IF necessary, release the SMPS Board from theSHIELD-SMPS.

SHIELD-SMPS

Service Manual



3.10 Fuser Unit

1. Lift up and turn the FRAME UPPER.

2. To release the ELAHOU-FUSER from the SET,remove the 4 screws.

3. Release the ELAHOU-FUSER.



3.11 Transfer Roller

1. Lift up the Transfer Roller.

2. Release the Transfer Roller from the SET.

Adjustment and Troubleshooting


444. Adjustment and Troubleshooting4.1 Alignment and Adjustments

This chapter describes the main functions for service, such as the product maintenance method, the testoutput related to maintenance and repair, Jam removing method, and so on. It includes the contents of manual.

4.1.1 Control Panel

display

1

Shows the current status and prompts during an operation. The message shows with specific LEDs as below. LEDs are working with short message on a display.

error LEDBlinks when the error occurs on your machine. If it blinks rapidly, the machine has stopped for some reason. Check the display message to solve the problem.

paper LEDBlinks when the paper in the tray is empty.

toner LEDBlinks when the print cartridge is almost empty or is not Samsung-genuine cartridge. If it blinks rapidly, the print cartridge is totally empty. Check the display message and replace the print cartridge.

paper jam LEDBlinks when the paper jam in the machine. Check the display message to release the jammed paper.

copy buttons

2 Copies: Increases the number of printouts. Number can be changed by using up/down arrows. Possible values can be added up to 99.

3 Reduce/Enlarge: Press this button to reduce or enlarge an image on the paper. You have to use up/down arrows to change the size.

4 Darkness: Defines the degree of darkness. Use up/down arrows to change the level of light/dark in the printouts.

5 up/down arrows: Moves to the next value when the one of copy buttons pressed.

6 Stop/Clear: Stops an operation at any time. Also, You can print a machine report by pressing this button for about 4 seconds.

7 Scan to PC: Scans an original to your computer.

8 Start Copy: Starts a copy job.

9 You can power on or off the control panel by pressing and holding this button for few seconds.

1

5

6

8

2

3

4

7

9

Service Manual



4.1.2 Status of OP Panel

Mode Item Status Status Display

P-Empty Moving Down Arrow head

Jam0 Moving Down Arrow head

Jam1 Moving Down Arrow headJam2 Moving Down Arrow head

Toner Low Moving Down Arrow headOne twinking light per 5 sec(On: 2.5 Sec + Off: 2.5 Sec)

Toner Replace Moving Down Arrow headInstall Error Moving Down Arrow head

Toner Exhausted T2Non Samsung Toner T3

Invalid Toner T1Option Unit Interface Error UE

Front Cover Open OPENOpen Heat ErrorOver Heat ErrorLow Heat ErrorLSU Not Ready LSU Hsync ErrorMotor Locked ErrorScan Lock ErrorInternal Error

Open Heat Error H1Over Heat Error H2Low Heat Error H3LSU Not Ready L1LSU Hsync Error L2Motor Locked Error MEScan Lock Error SEInternal Error IE

Not Supported

Moving Down Arrow head Arrow will come down frame by frame (5 Frames) and when Arrow is at Last frame Status LED will Glow.

Status LED

User Mode

Paper StatusOne twinking light per 2 sec(On: 1 Sec + Off: 1 Sec)

Toner WarningOne twinking light per 2 sec(On: 1 Sec + Off: 1 Sec)

Recovable ErrorOne twinking light per 2 sec(On: 1 Sec + Off: 1 Sec)

System Error Moving Down Arrow headOne twinking light per 2 sec(On: 1 Sec + Off: 1 Sec)

Tech Mode System ErrorOne twinking light per 2 sec(On: 1 Sec + Off: 1 Sec)



OPE Design

Service Manual



Main LED TEXT Definition



Function and Indication Description

Service Manual



Function and Indication Description



LED Display Interaction

Service Manual






Multi Error Definition

Do not everything togling information when multi-error happened and main-display marks prierity unfirma-tion and gives response in under error icons.

When produce error during printing, printing and error status need togling that show intersection.

Service Manual



4.1.3 Manu Map

4.1.3.1 Table of Manu Map

1 Symbol +2 Charater

LoganDefaultValue

Descriptions

Direct Key --Up and

Down key1. Reduce/Enlarge +50 to +199 Controlled through Key 100 100 signify Actual Size

2. Copies 1 to 99 Controlled through Key 1

1 -20

2 -10

3 +00

4 +10

5 +20

4.Stop/Cancel Key(Hold for 4 SEC on idlescreen mode)

1

System Data

Hold STOP key for 4 sec than system datareport will be printed.

CA

CC

FU

ST

DTRTPTSHSD

RP

ER

FCFactory Clear

Power ->Down-->ScanTo-->START

A A4 User can scroll thgroughAging test menu by usingUP/Down Key

A LT

A 01

A 02

A 03

A 04

For ReportPower ->Copies-->ScanTo-->DOWN-->StartSystem Data Report print01- System Data02- Error report

Factory Mode

AT

Power ->Down-->ScanTo->UP

A A4 - Aging testA4A LT - Aging testLTA 01 - Aging test2A 02 - Aging test2A 03- Aging test3A 04- Aging test4

+00

Tech Mode

DS

For Data Setup:Power ->Copies-->ScanTOUP/DOWN key to scroll for Sub menus. Needto assign sub menu number.CA - Clear All Mem,CC - Clear Count,FU- Flash Upgrade

M

For Machine Test:Power ->Copies-->ScanTOUP/DOWN key to scroll for Sub menus. Needto assign sub menu number. Like 01 - SwitchTest,02 - DRAM Test,

Key

2 .Darkness

5 level (-20, -10, +00, +10, +20)



Direct Key

1 Copies 1 99 * Default : 12 Reduce/Enlarge Would support: +50 ~ +199%3 Darkness This key is to select darkness level. 5 levels are supported.4 Stop/Cancel This key is used to stop the job being done or use in special key

sequence.5 UP To increment/scroll UP6 Down Decrement/Scroll Down7 StartCopy To start Copy Job8 ScanTo PC To Start PC Scan Job9 Power To Power ON/Off

Status LED

1 Error Led This Led will glow if there is any general error.2 Paper Status This led will glow if there is paper Empty condition.3 Toner Status This Led will glow if there is Toner error condition4 Paper Jam Status This led will glow if there is paper Jam condition.

Service Manual



Report Printing

• Hold STOP/CLEAR key for 4 sec to Print System Data List.

Tech Mode Error Display

• Press Power --> Down --> Start --> Up to set Tech Mode. Use the same sequence to change themode to user mode.

Tech Mode Test

• Press Power --> Copies --> ScanTO to go to Data Setup Menu. Following Menu would be displayed after pressing Power --> Copies --> ScanTO key sequence.

4.1.3.2 Tech mode

User Unrecoverable [Service Tech Mode]- Temp Part Error [Thermistor Open, Over Heat, Low Heat : H1, H2, H3]- LSU Part Error [Black LSU Look(not ready), Black Hsync(LSU Hsync) : L1, L2]- Motor 0_Locked Error(Main BLDC Motor Locked Error) : ME- Scan Lock Error : SE- Internal Error : IE

T DS T M T RP

T RP T M T DS

[RP - ReportPrint]

[M - MachineTest]

[DS - DataSetup]

[DS - DataSetup]

[M - MachineTest]

[RP - ReportPrint]




Tech Mode Tests

TDS

TM

TRP

TRP

TM

TDS

Data Setup

DC M

DC C

DF U

DC M

DF U

DC C

Macine Test

MS T

MD T

MR T

MP T

MS H

MS T

MS H

MP T

MR T

MD T

[SH - Shading

Test]

[SH -

Shading Test]

[RT - Rom Test]

[DT - Dram

Test]

Press Power ->Copies-->ScanTo-->UP-->Start to go to Machine Test Menu.

Following Menu would be displayed after pressing Power ->Reduce-->ScanTo

key sequence.

[RT - Rom

Test]

[PT - Pattern

Test]

[ST - Switch

Test]

[DT - Dram

Test]

[ST - Switch

Test]

[CM - Clear All

Mem]

[FU - Flash

Upgrade]

[RP - Report

Print]

[M - Machine

Test]

Press Power ->Copies-->ScanTO-->Start to go to Data Setup Menu. Following

Menu would be displayed after pressing Power ->Copies-->ScanTO key

sequence.

[CM - Clear All

Mem]

[CC - Clear

Count]

[FU - Flash

Upgrade]

[DS - Data

Setup]

[CC - Clear

Count]

Press Power-->Down-->Start-->Up to set Tech Mode. Use the same

sequence to change the mode to user mode.

[PT - Pattern

Test]

Press Power ->Copies-->ScanTO to go to Data Setup Menu. Following Menu

[DS - Data

Setup]

[M - Machine

Test]

[RP - Report

Print]

Service Manual




Tech Mode Tests

TDS

TM

TRP

TRP

TM

TDS

Report Print

RS D

RE R

RS D

RE R

[RP - Report

Print]

[M - Machine

Test]

[DS - Data

Setup]

Press Power ->Copies-->ScanTo-->DOWN-->Start to go to Report Menu.

[SD - System

Data]

[ER - Error

Report]

[SD - System

Data]

[ER - Error

Report]

Press Power-->Down-->Start-->Up to set Tech Mode. Use the same

sequence to change the mode to user mode.

Press Power ->Copies-->ScanTO to go to Data Setup Menu. Following Menu

[DS - Data

Setup]

[M - Machine

Test]

[RP - Report

Print]



.C

UK

CUS

CKR

CCH

CCH

CKR

CUS

CUK

Press Power ->Down-->ScanTo-->START to go to Factory Clear Menu.

Following Menu would be displayed after pressing Power ->Down-->ScanTo--

>START key sequence.

UK,US,KP,CH

UK,US,KP,CH

UK,US,KP,CH

UK,US,KP,CH

UK,US,KP,CH

UK,US,KP,CH

UK,US,KP,CH

UK,US,KP,CH

Factory Clear

There will be 4 options for

factory clear:-

UK

US

KR

CH

Service Manual



Spcial Mode

SE P

SS T

SH C

SCR

SE P

SH C

SS T

SCR

Scanner Test

SD K

SS C

SS H

SP J

SD K

SP J

SS H

SS C

[SH - Shading]

[PJ - Pause]

[DK - Display

Key]

[PJ - Pause]

[SH - Shading]

[SC - Scanner

Test]

Press Power ->Darkness-->ScanTo-->UP-->Start to go to Scanner Test Sub-

Menu.

[DK - Display

Key]

[SC - Scanner

Test]

[ST - Scanner

Test]

[HC - Home

Check Data]

[HC - Home

Check Data]

[HC - Crum

Report Data]

[HC - Crum

Report Data]

Press Power ->Darkness-->ScanTo to go to Aging Test ModeMenu. Following

Menu would be displayed after pressing Power ->Darkness--->ScanTo key

sequence. [EP - Edge

Print]

[ST - Scanner

Test]

[EP - Edge

Print]



Spcial Mode

SE P

SS T

SH C

SCR

SE P

SH C

SS T

SCR

[ST - Scanner

Test]

[HC - Home

Check Data]

[HC - Home

Check Data]

[HC - Crum

Report Data]

[HC - Crum

Report Data]

Press Power ->Darkness-->ScanTo to go to Aging Test ModeMenu. Following

Menu would be displayed after pressing Power ->Darkness--->ScanTo key

sequence. [EP - Edge

Print]

[ST - Scanner

Test]

[EP - Edge

Print]

Toner Exhausted

Max

Current Toner

Exhausted

4.1.3.3 System Data List

Service Manual





4.1.4 Report Printing Condition

4.1.5 Table. Periodic Images according to Rollers

Status (SM) UI(LCD) PC-Print out Copy out Report out Toner Low Animation Print Print PrintToner Empty Animation Print Print Print

Toner Install Error Animation No Print No Print No PrintInvalid Toner !! T1 No Print No Print Print(Tech mode)

Toner Exhausted !! T2 No Print No Print Print(Tech mode)Non Genuine Toner !! T3 Print Print Print

11

22

3344

55

66

77

No Roller Period Phenomenon

1 OPC Drum 62.8 mm White and Black Spots

2 Charge Roller 26.7 mm White /Black Spot and Periodic Band

3 Supply Roller 46.9 mm Periodic Band (by little difference of density)

4 Developing Roller 35.2 mm White Spot, Horizontal black band

5 Transfer Roller 47.1 mm Periodic Band (by little difference of density)

6 Heat Roller 77.09 mm Black Spot and Image Ghost

7 Pressure Roller 75.36 mm Black Spot on Enter Blackside

Service Manual



4.1.6 Paper Path and Jam Error Solution

When removing paper that is jammed in the printer, if possible always pull the paper in the direction that it nomallymoves so as not to damage internal components. Always pull firmly and evenly; do not jerk the paper. if the paperlears, ensure that all fragments of paper are removed; otherwise a jam will occur again.

4.1.6.1 Paper Path



4.1.6.2 Clearing paper jams

Refer to the table below to locate and clear the paper jam.

Status display Explanation

Paper jam LED( ) blinks

In the paper feed area and rear the machine

Rear and Inside the machine

In the exit area

4.1.6.2(a) In the paper feed area and rear the machine

If paper is jammed in the paper feed area and rear the machine, follow the next steps to release the jammedpaper.

1. Press the tray open button.

2. Pull the tray open.

3. Remove the jammed paper by gently pulling itstraight out as shown below.

4. Align the tray with the slot, and slide it into themachine.

Service Manual



5. Press the top cover lever, completely open the topcover.

6. Hold the top cover and close it slowly and carefully,until the cover is securely latched.

7. If the paper LED blinks, go to next step.

8. Open the rear cover.

9. Carefully take the jammed paper out of themachine.

10. Hold both edges of the rear cover, and align it asshown in the following figure. Press the rear coverfirmly until it clicks.

11. Open and close the top cover firmly. The machinewill resume printing.



4.1.6.2(b) Rear and inside the machine

If paper is jammed in the rear and inside the machine, follow the next steps to release the jammed paper.

1. Open the rear cover.


3. Hold both edges of the rear cover, and align it asshown in the following figure. Press the rear coverfirmly until it clicks.



6. If the paper LED blinks, go to next step.


Service Manual



8. Grasp the handles on the print cartridge and pull toremove the cartridge out of the machine.


10. After removing the jammed paper, check forpaper which may be jammed in other parts of themachine.

11. Slide the print cartridge back into the machine.

12. Close the top cover firmly. The machine willresume printing.



4.1.6.2(c) In the exit area

If paper is jammed in the paper exit area, follow the next steps to release the jammed paper.


2. If a long portion of the paper is visible, pull itstraight out.

If there is any resistance removing the paper, stoppulling


4. Open the inner cover.

1 inner cover

Service Manual




6. Close the inner cover.

7. After removing the jammed paper, check for paperwhich may be jammed in other parts of themachine.

8. Close the top cover firmly. The machine willresume printing.



4.1.7 Error Messages

Messages appear on the Smart Panel program window or on the control panel display to indicate machine status orerrors. Refer to the tables below to understand the messages meaning to correct the problem, ifnecessary.

OPEN

!! EE

LED blinks

LED blinks

LED blinks slowly

LED blinks rapidly

LED blinks rapidly

!! T1

!! T2

!! T3

Press the covers until it clicks.

Unplug the power cord and plug it back in.If the problem persists, contact the servicerepresentatives.

Load paper in the tray.

Clear the jam.

Clear the jam.

Clear the jam.

Take out the corresponding print cartridgeand thoroughly shake it. By doing this, youcan temporarily reestablish printing operations.

Replace the corresponding print cartridgewith a Samsung-genuine cartridge.

Reinstall the print cartridge two or threetimes. If the problem persists, the printcartridge is not being detected.Please contact the service representa-tives.

Replace the corresponding cartridgewith a Samsung-genuine cartridge.

Replace the corresponding cartridge witha Samsung-genuine cartridge.

Replace the corresponding cartridge witha Samsung-genuine cartridge.

The covers is not completely closed.

There is a problem in the machine.

There is no paper in the tray.

In the paper feed area and rear themachine.

Rear and Inside the machine.

In the exit area.

The print cartridge which the arrow indicates is almost empty.

The print cartridge which the arrow indicates has run out.

The print cartridge is installed improperly,or not installed.

The print cartridge you have installed isnot compatible with your machine.

The lifespan of cartridge is reached.

The print cartridge you have installed isnot a genuine cartridge.

Message Meaning Suggested solutions

Service Manual



4.2 Troubleshooting

4.2.1 Procedure of Checkig the Symptoms

Before attempting to repair the printer first obtain a detailed description of the problem from the customer.

Power On

IndicateError Display

Ready or Power save

Test Print

printingQuality isNomal?

Refer to "Solutionof Image Problem"

Refer toError Display

<Chapter 4.1.7>

END

- No Power- Power Module error- Main PBA error- Display Panel error

OP PanelON?



4.2.2 The cause and solution of image quality

4.2.2.1 Vertical Black Line and Band

Description: 1. Straight thin black vertical lines occur in the prnting2. Dark black vertical bands occurrs in the printing

Digital PrinterDigital PrinterDigital PrinterDigital PrinterDigital Printer

Service Manual



4.2.2.2 Vertical White Line

Description: White vertical voids in the image.




4.2.2.3 Horizontal Black Bands

Description: Dark or blurry horizontal stripes occur in the printing periodically(These may occurs at regular intervals down the page.)

1) OPC Drum = 62.8mm2) Charge Roller = 26.7mm3) Supply Roller = 46.9mm4) Developing Roller = 35.2mm5) Transfer Roller = 47.1mm


Service Manual



4.2.2.4 Black/White Spot

Description:1. Dark or blurry spots occur periodically in the printing 2. White spots occur periodically in the printing

26.762.8

62.8

62.8

26.7

50K




4.2.2.5 Light Image

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


Service Manual



4.2.2.6 Dark image or Black

Description: The printed image is dark.




4.2.2.7 Uneven Density

Description: Print Density is uneven between left and right.

Service Manual



4.2.2.8 Background

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




4.2.2.9 Ghost(1)

Description: Ghost occur at 63mm intervals of the OPC drum in the whole Printing

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

63 mm

Service Manual



4.2.2.10 Strain in the Face of the Page

Description: The background on the face of the printed page strained.




4.2.2.11 Strains on Back of Page

Description: The back of the page is strained at 47.1 or 75.36 mm intervals.

75.36

Digital Digital PriDigital PrinterDigital PrinterDigital Printer

Service Manual



4.2.2.12 Blank Page Print out(1)

Description: Blank page is printed.




4.2.3 The cause and solution of the paper feeding

4.2.3.1 Wrong Print Position

Description: Printing begins at wrong position on the paper.

Service Manual



4.2.3.2 JAM 0

Description:1. Paper does not exit from the cassette.2. Jam-0 occurs when the paper feeds into the printer



4.2.3.3 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

Service Manual



4.2.3.4 JAM 2

Description: 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.



4.2.3.5 Multi-Feeding

Description: Multiple sheets of paper are fed at once.

Service Manual



4.2.3.6 Paper rolled in the fuser

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



4.2.4 Copy Problems

4.2.4.1 Abnormal noise

Description : There is noise from the Platen when copying

1. Check the Scanner Motor and gear.

Check for correct assembly of gear and motor. Ensure no parts are fouling and there are no foreign objects in the mechanism or scanner path. Replaceany worn parts.

Replace the main PBA.2. Check the Motor Driver on Driver PBA.

Service Manual



4.2.4.2 Defective Image Quality

Description : The copied image is excessively light or dark

1. Check shading profile. Redo shading profile in the tech mode.

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

2. Check the gap between original and scanner glass.

See "Print" troubleshooting.3. Check printing quality.



4.2.4.3 Multi-Feeding

Description: Multiple sheets of Document are fed at once.

1. Check that the paper size guides are set correctly. (Documents Guide)

Adjust Left, Right Documents Guide.

Use paper with a smother suface finish.2. Paper has a rough suface texture.

Can the friction pad rubber with a soft cloth dampened with IPA (lsopropyl Alcohol) or water.

3. Friction Pad is contaminated.

Service Manual



4.2.5 The cause and solution of the malfunction

4.2.5.1 Fuser Error

Description : message (Fuser High Error / Fuser Low Error / Fuser Open Error) is displayed on a smart panel.



4.2.5.2 LSU Unit Error

Description : message LSU Error / LSU Hsyne Error is displayed on a smart panel.

Service Manual



4.2.5.3 Paper Empty Error

Description : The paper lamp on the operator panel is on even when paper is loaded in the cassette.



4.2.5.4 Cover open Error

Description : message “Cover open” is displayed on a smart panel.

Service Manual



4.2.5.5 No power Error

Description : When system power is turned on, all lamps on the operator panel do not come on.

Exploded Views & Parts List


555. Exploded Views and Parts List

5.1 Main 5-2

5.2 Scanner Unit 5-4

5.3 OPE Unit 5-6

5.4 Cover Lower 5-8

5.5 Frame Upper 5-10

5.6 Frame Lower 5-12

5.7 Main Drive 5-16

5.8 Fuser 5-18

5.9 Cassette 5-20

ContentsContents

DIGITAL LASER PRINT The keynote of Product

Slim Size 3 in 1 MFP (SCX-4500)

- Printing Speed : 16PPM(A4), 17PPM(Ltr)- Printing Resolution : 600 x 600dpi- Interface : USB 2.0- OPE : Touch Sensor- Scanner : FLAT-BED CIS(600dpi)- Scan Resolution(Optiacl) : 600 x 2,400dpi- Paper Input Capacity : 100 sheets- Paper Output Capacity : 30 sheets- Engine Life : 50,000 Pages- Toner : Initial(1K) / Sales(2K)

SCX-4500



5-2

5.1 Main

0

1

2

3

4

8

10

11

12

15

12-1

12-2

12-3

12-4

13

16

17

14

1819

2 0



Main Parts List

Drawer# SEC_CODE DESCRIPTION QT’Y Service Remark5.1-0 SCX-4500 SET

5.1-1 JC96-04645A ELA UNIT-FRAME LOWER 1 Y

5.1-2 JC66-01564A LINK-UPPER 1 Y

5.1-3 JC61-02178A STUD-HINGE 2 Y

5.1-4 6031-001602 WASHER-PLAIN 2 Y

5.1-8 JC66-01218A ROLLER-TRANSFER 1 Y

5.1-10 JC92-01891A PBA-MAIN 1 Y

5.1-11 JC97-02978A MEA UNIT-COVER LOWER 1 Y

5.1-12 JC97-02990A MEA UNIT-FEED LOWER 1 Y

5.1-12-1 JC61-01980A GUIDE-FEED LOWER 1 Y

5.1-12-2 JC63-01385A COVER-DUMMY REAR 1 Y

5.1-12-3 JC66-01510A ROLLER-IDLE 2 Y

5.1-12-4 6107-001277 SPRING-ETC 2 Y

5.1-13 JC96-04644A ELA UNIT-FRAME UPPER 1 Y

5.1-14 JC96-04529A ELA UNIT-SCANNER 1 Y

5.1-15 JC97-02933A MEA UNIT-CASSETTE 1 Y

5.1-16 JC96-04523A CARTRIDGE-TONER 1 N

5.1-17 6107-001351 SPRING-TS 1 Y

5.1-18 JC96-04623A ELA UNIT LSU 1 Y

5.1-19 JC63-00209A WHITE-SHEET-SPONGE 1 Y

5.1-20 JC99-02108A INA-STACKER 1 Y



5-4

5.2 Scanner Unit

0

2-1

2

2-2

2-3

2-4

2-5

2-6

2-7

2-8

2-9

2-10

2-11

1

33-1

3-2

3-3

3-4

3-5

45

6

7

8

9

10

1112

1314

15

16



Scanner Unit Parts List

5.2-0 JC97-02930A MEAUNIT-SCAN UPPER 1 Y5.2-1 JC63-01331A COVER-SCAN UPPER 1 Y5.2-2 JC96-04531A ELAUNIT-CIS 1 Y5.2-2-1 JC61-01969A BRACKET-CIS 1 Y5.2-2-2 6107-001137 SPRING CS 2 Y5.2-2-3 0609-001287 CONTACT-IMAGE SENSOR 1 Y5.2-2-4 JC66-01580A SLIDER-CIS 2 Y5.2-2-6 JC92-01904A PBA LENS INDICATOR 1 Y5.2-2-7 6602-001261 TIMMING GEAR 1 Y5.2-2-8 JB61-00232A CLIP-P-BELT 1 Y5.2-2-9 JC66-01448A SHAFT-CIS 1 Y5.2-2-10 JC67-00231 LENS-LED INDICATOR 1 Y5.2-2-11 JC39-00729 HARNESS-CIS-FFC 1 Y5.2-3 JC96-04532A ELAUNIT-SCAN DRIVE 1 Y5.2-3-1 JC61-01640A BRACKET MOTOR-P-SCAN 1 Y5.2-3-2 JC66-01201A GEAR-M-PULLY 1 Y5.2-3-3 JC67-00069A CAD-M-PULLY 1 Y5.2-3-4 JC31-00080A MOTOR STEP 1 Y5.2-3-5 6003-000269 SCREW-TAPTITE 2 Y5.2-4 JC61-00931A BRACKET-P-PULLY 1 Y5.2-5 JC66-00713A PULLEY-M-IDLE 1 Y5.2-6 6107-001194 SPRING CS 1 Y5.2-7 JC39-00680A HANESS-OPE 1 Y5.2-8 JC97-02930A MEAUNIT-SCAN UPPER 1 Y5.2-9 JB01-00002A CLASS-PLATEN 1 Y5.2-10 JB68-00644A LASER_SHADING 1 Y5.2-11 0203-001841 TAPE-DOUBLE FACE 1 Y5.2-12 JC64-00317A WINDOW-INDICATOR 1 Y5.2-13 JC96-04533C ELA-UNIT-SCAN OPE 1 Y5.2-14 JC63-013333A COVER SCAN PLATEN 1 Y5.2-15 JC63-00209A SHEETUNIT SPONGE 1 Y5.2-16 3301-001742 CORE-FERRITE 1 N

Drawer# SEC_Code Description QT'y Service Remark



5-6

5.3 OPE Unit

0

1

2

3

4

5



OPE Unit Parts List

5.3-0 JC96-04533A ELAUNIT-SCAN OPE 1 Y

5.3-1 JC63-01333A COVER-SCAN OPE 1 Y5.3-2 JC63-01468A SHEET-SCAN DIFUSSION 1 Y5.3-3 JC61-02008A HOLDER LED MAIN 1 Y5.3-4 0203-002250 TAPE-DOUBLE FACE 1 Y5.3-5 JC92-01892A PBA-OPE 1 Y




5-8

5.4 Cover Lower

0

1

2

3

4

4-1

4-2

4-3



Cover Lower Parts List

5.4-0 JC97-02978A MEAUNIT-COVER LOWER 1 Y5.4-1 JC63-01383A COVER LEFT 1 Y5.4-2 JC63-01384A COVER RIGHT 1 Y5.4-3 JC63-01436A COVER REAR 1 Y5.4-4 JC97-03055A MEAUNIT-COVER FRONT 1 Y5.4-4-1 JC63-01382A COVER-FRONT 1 Y5.4-4-2 JC61-00060A SPRING ETC-TS BLADE 1 Y5.4-4-3 JC63-01434A COVER DOOR STAKER 1 Y




5-10

5.5 Frame Upper

0

1

4

5 6

7

8

9

10

11

12

13



Frame Upper Parts List

5.5-0 JC96-04644A ELAUNIT-FRAME UPPER 1 Y5.5-1 JC61-02107A FRAME BASE UPPER 1 Y5.5-4 JC65-00019A TERMINAL CRUM 4 Y5.5-5 JC39-00761A HARNESS-CRUM 1 Y5.5-6 6003-000282 SCREW-TAPTITE 4 Y5.5-7 JC61-70958A SPRING ETC-GUIDE TR 2 Y5.5-8 JC61-02108A PLATE GUIDE DEVE 1 Y5.5-9 JC61-70932A SPRING ETC-GUIDE DEVE 1 Y5.5-10 JC66-01545A LEVEL HANDLE UPPER 1 Y5.5-11 JC62-00417A SEAL-LSU 1 Y5.5-12 JC63-01444A COVER DUMMY EXTRA 1 Y5.5-13 JC62-00464A SEAL-LSU REAR 1 Y




5-12

5.6 Frame Lower 1

0

1

3

5

6

7

89

10

11

12

13

14

16 20

21

22

23

2425

26

28

27

29

3031

32

3031

32

33

3435

36

3938

3635

37

40-1

40-2

40-3

40

41

42

4344

45

46

4745

49

5051

52

76

77



Frame Lower 2

1

535455

56

57

58

58-1

58-2

58-3

59

60

62

6364

65

66

67

67

69

70

71

0

72

75 73

737461

61-1

61-2

61-3

61-4



5-14

Frame Lower Parts List

5.6-0 JC96-04645A ELAUNIT-FRAME LOWER 1 Y5.6-1 JC61-02113A FRAME-BASE LOWER 1 Y5.6-3 JC44-00146A HVPS 1 Y5.6-5 JC63-01372A COVER-HVPS 1 Y5.6-6 JC39-00676A HARNESS-HVPS 1 Y5.6-7 JC66-00829A SHAFT-P-PICK_UP 1 Y5.6-8 JC66-01544A LEVER-CASSETE ROCK 1 Y5.6-9 6107-001170 SPRING-TS 1 Y5.6-10 JC66-01573A LEVER-CASSETE GUIDE 1 Y5.6-11 JC39-00677A HARNESS-COVER 1 Y5.6-12 JC61-02009A HOLDER-SWITCH 1 Y5.6-13 JC63-01437A GROUND-MAIN 1 Y5.6-14 JC75-00049A MEC-TERMINAL 4 Y5.6-16 JC65-00024A TERMINAL-HV 4 Y5.6-20 JC63-01415A GROUND-P THV 1 Y5.6-21 JC39-00676A HARNESS-HVPS 1 Y5.6-22 JC61-02109A HOUSING-TERMINAL 1 Y5.6-23 JC61-02130A GUIDE-EARTH TRNASFER 1 Y5.6-24 JC61-70932A SPRING ETC-GUIDE DEVE 1 Y5.6-25 JC61-01548A HOLDER-M-CAM 1 Y5.6-26 JC63-01416A GROUND-HVPS 1 Y5.6-27 JC72-00382B PMO-BUSHING FEED 2 Y5.6-28 JC66-00526A ROLLER-FEED ROLLER 1 1 Y5.6-29 JC66-01439A GEAR-REGI 1 Y5.6-30 JC72-41191B PMO-BEARING SHAFT 1 Y5.6-31 JC66-01435A GEAR-FEED 1 Y5.6-32 JC66-01436A GEAR-DRV FEED 1 Y5.6-33 JC61-01967A BRACKET_FEED 1 Y5.6-34 JC66-01469A CAM-PICKUP L 1 Y5.6-35 JC61-01713A STOPPER-PICK_UP R 2 Y5.6-36 JC66-01509A ROLLER-PICKUP IDLE 2 Y5.6-37 JC66-01468A CAM-PICKUP R 1 Y5.6-38 JC61-01281A BRACKET-P-BAR_PICK_UP 1 Y5.6-39 JC66-00829A SHAFT-P-PICK_UP 1 Y5.6-40 JC97-02982A MEAUNIT-ROLLER PICKUP 1 Y5.6-40-1 JC61-00909A HOUSING-M-PICK UP_R2 1 Y5.6-40-2 JC61-02079A HOUSING-PICKUP B 1 Y5.6-40-3 JC72-01231A SPONGE-ROLLER PICK_UP 1 Y5.6-41 JC97-02957A MEAUNIT-GEAR PICKUP 1 Y5.6-42 JC63-01414A GROUND DRIVE 1 Y5.6-43 0604-001095 PHOTO INTERRUTER 1 Y5.6-44 JC66-01541A ATUATOR EMPTY 1 Y5.6-45 6107-001164 SPRING TS 2 Y




Frame Lower Parts List

5.6-46 JC63-01413A GROUND-SAW 1 Y5.6-47 JC66-01542A ACTUATOR-FEED 1 Y5.6-49 JC64-00332A BUTTON-CASSETTE 1 Y5.6-50 JC61-70940A SPRING ETC-TR(12) 1 Y5.6-51 JC63-01417A GROUND-FUSER 1 Y5.6-52 JC70-10232A IPR-PLATE SAW 1 Y5.6-53 JC63-01420A SHIELD-SMPS 1 Y5.6-54 JC63-01411A SHEET-SMPS 1 Y5.6-55 JC44-00147A SMPS-V1 1 Y5.6-56 JC96-04540A ELAHOU-FUSER 1 Y5.6-57 JC63-01430A COVER-DUMMY REAR 1 Y5.6-58 JC97-02939A MEAUNIT-FEED UPPER 1 Y5.6-58-1 JC61-01979A GUIDE-FEED UPPER 1 Y5.6-58-2 JC66-01510A ROLLER-IDLE 2 Y5.6-58-3 6107-001277 SPRING-ETC 2 Y5.6-59 JC39-00685A HARNESS-INLET 1 Y5.6-60 JC61-02114A BRACKET-REAR 1 Y5.6-61 JC97-02937A MEAUNIT-HOLDER PICKUP 1 Y5.6-61-1 JC69-00987A PAD-FRICTION 1 Y5.6-61-2 JC61-02076A HOLDER-PAD 1 Y5.6-61-3 JC63-00290A SHEET-HOLDER PAD 1 Y5.6-61-4 JC61-70911A SPRING ETC-EXIT ROLL FD 2 Y5.6-62 JC96-04622A ELAUNIT-SOLENOID 1 Y5.6-63 JC66-01575A LINK-RAIL UPPER 1 Y5.6-64 JC96-04715A ELAUNIT DRIVE 1 Y5.6-65 JC39-00679A HARNESS-MOTOR 1 Y5.6-66 JC61-40001A FOOT-ML 80 4 Y5.6-67 JC61-02110A GUIDE-CASETTE RAIL 2 Y5.6-69 JC31-00089A FAN-DC_HAWK 1 Y5.6-70 JC39-00737A HARNESS-FUSER 1 Y5.6-71 JC39-00697A HARNESS-MAIN 1 Y5.6-72 JC63-01421A SHIELD-MAIN 1 Y5.6-73 JC61-70940A SPRING ETC-TR(12) 2 Y5.6-74 JC61-00588A BUSH-M-TRL 1 Y5.6-75 JC72-00102A PMO-BUSHING_TR(L) 1 Y5.6-76 JC72-01418A SPONGE-LEFT 1 Y5.6-77 JC72-01419A SPONGE-RIGHT 1 Y




5-16

5.7 Main Drive

0

1

2

3

4 5

6

78

9

10

11

12

13

14

15

15

15



Main Drive Parts List

5.7-0 JC96-04715A ELAUNIT DRIVE5.7-1 JC61-01968A BRACKET GEAR 1 Y5.7-2 JC31-00079A BLDC-MOTOR 1 Y5.7-3 JC66-01445A GEAR RDCN FUSER 1 Y5.7-4 JC66-01444A GEAR RDCN OPC 1 Y5.7-5 JC66-01441A GEAR DRV FUSER OUT 1 Y5.7-6 JC66-00340A GEAR HUB CLUTCH 1 Y5.7-7 JC66-01800A GEAR_DRV FUSER IN 1 Y5.7-8 6031-000023 WASHER-PLAIN 1 Y5.7-9 JC66-01440A GEAR DRV OPC 1 Y5.7-10 JC66-01443A GEAR DRIVE PICK UP 1 Y5.7-11 JC66-01447A GEAR RDCN FEED B 1 Y5.7-12 JC66-01446A GEAR RDCN FEED A 1 Y5.7-13 JC66-01442A GEAR DRV REGI 1 Y5.7-14 6001-000130 SCREW MACHINE 3 Y5.7-15 6031-001602 WHASHER-PLAIN 4 Y




5-18

5.8 Fuser

0

318

17

45

1

151192728

2930

34

33

31

22

14

7

21

19

10

25

624

16

26

262

32

18

13

20

12

32

35

36



Fuser Parts List

5.8-0 JC96-04540A ELAHOU-FUSER 1 Y5.8-1 1404-001427 THERMISTOR-NTC ASSY 1 Y5.8-2 4713-001226 LAMP-HALOGEN 1 Y5.8-3 6006-001078 SCREW-TAPTITE 1 Y5.8-4 6003-000269 SCREW-TAPTITE 1 Y5.8-5 6003-000282 SCREW-TAPTITE 2 Y5.8-6 6107-001165 SPRING-TS 1 Y5.8-7 JC61-00056A SPRING ETC-PR(7300) 2 Y5.8-8 JC66-01254A GEAR-FUSER 1 Y5.8-9 JC61-00064A SPRING ETC-CLAW 1 Y5.8-10 JC61-02010A HOLDER-ACTUATOR 1 Y5.8-11 JC61-02184A GUIDE-CLAW PI 4 Y5.8-12 JC61-00887A BUSH-M-HR R_R2 1 Y5.8-13 JC61-00888A BUSH-M-HR L_R2 1 Y5.8-14 JC61-02450A GUIDE-INPUT 1 Y5.8-15 JC63-01431A COVER-FUSER 1 Y5.8-16 JC66-00380A ROLLER-M-EXIT F/UP 1 Y5.8-17 JC72-00143A PMO-GEAR_EXIT_DRV16 1 Y5.8-18 JC66-01254A GEAR-FUSER 1 Y5.8-19 JC66-00600A ROLLER-PRESSURE 1 Y5.8-20 JC66-01531A ROLLER-HEAT 1 Y5.8-21 JC66-10901A BUSH 2 Y5.8-22 JC61-02137A FRAME-FUSER 1 Y5.8-23 4712-001027 THERMOSTAT 1 Y5.8-24 JC72-00382A PMO-BUSHING TX 3 Y5.8-25 JC66-01533A ACTUATOR-EXIT 1 Y5.8-26 JC73-00255A RUBBER-EXIT F/UP 4 Y5.8-27 JC66-01312B ROLLER-IDLE 1 Y5.8-28 JC70-00064A IPR-PIN ROLLER EXIT 1 Y5.8-29 JC72-20902B PEX-ROLLER F/UP(2) 1 Y5.8-30 6107-001347 SPRING-ETC 4 Y5.8-31 JC61-02129A GUIDE-EXIT 1 Y5.8-32 JC61-02012A HOLDER-LAMP 1 Y5.8-33 JC67-00111A CAP-M_ACTUATOR_UP 2 Y5.8-34 6107-001346 SPRING-CS 2 Y5.8-35 JC63-01446A COVER-LAMP 1 Y5.8-36 JC63-01739A FELT-FUSER 1 Y




5-20

5.9 Cassette

3

4

0

1 23

4

6

7

8

9

10

11

12

11

1314

14

15

16

17



Cassette Parts List

5.9-0 JC97-02933A MEAUNIT-CASSETTE 1 Y5.9-1 JC61-02081A FRAME-CST 1 Y5.9-2 JC61-02126A GUIDE-REAR 1 Y5.9-3 6107-001350 SPRING-CS 2 Y5.9-4 JC61-02111A GUIDE-CASSETTE LOCK 2 Y5.9-6 JC63-01432A COVER-CASSETTE 1 Y5.9-7 JG66-40003A GEAR-PINION 1 Y5.9-8 6003-000264 SCREW-TAPTITE 1 Y5.9-9 JC61-02124A GUIDE-SIDE L 1 Y5.9-10 JC61-02125A GUIDE-SIDE R 1 Y5.9-11 JG61-70531A SPRING ETC-LOCKER,PLATE 2 Y5.9-12 JC61-02128A GUIDE-KNOCKUP R 1 Y5.9-13 JC61-02127A GUIDE-KNOCKUP L 1 Y5.9-14 6107-001349 SPRING-CS 2 Y5.9-15 JC61-02080A PLATE-KNOCKUP 1 Y5.9-16 JC73-00141A RPR-PAD CASSETTE 2 Y5.9-17 JC66-00720A SHAFT-P-CORE 1 Y


66System Diagram


Chrous2

UA

RT

CY

2581

1,4

Mai

n C

LK10

.00M

Hz

US

B2.

0

FLA

SH

RO

M1M

B

SD

RA

M8M

B

BLD

C M

otor

C

ontr

ol s

igna

lM

ain

Mot

or

LSU

RE

SE

T IC

C R

SMPS

HVPSD R

S RT R

RE

G

RE

G

Exi

tS

enso

rF

eed

Sen

sor

Cov

erO

pen

S/W

(5V

S/5

V)

24V

/5V

TR

IAC

The

rmis

tor

Fuser

The

rmos

tat

LSU

OPE

CY

8C21

434

KE

Y

P C

Pickup Clutch

FAN

A(1

:20)

D(0

:15)

5V

3.3V

1.8VMain Board

Engine Frame

Developer Unit

Vid

eo C

LK19

.75M

Hz

3.3V

LED

PT

6961

Cov

erO

pen

S/W

(24V

/24V

S)

Mot

or D

rv.

AN

4406

0S

can

Mot

or

CIS

Scanner

P_E

mpt

y S

enso

r

6. System Diagram

6.1 Block Diagram

Service Manual

System Diagram

6-2

6.2 Connection Diagram

1.5V

2.D

GN

D3.

nLE

D_E

N_1

4.LE

D_E

N_2

5.LE

D_C

LK2

6.LE

D_C

LK1

7.nL

ED

_DA

TA

28.

nLE

D_D

AT

A1

9.D

GN

D10

.PO

WE

R_L

ED

_ON

11.T

OU

CH

_RX

12.B

UZ

ZE

R_P

WM

13.N

C14

.SC

AN

MO

T_A

15.S

CA

NM

OT

_NA

16.S

CA

NM

OT

_B17

.SC

AN

MO

T_N

B

1.24

VS

2.D

GN

D3.

nPM

OT

OR

4.nL

RE

AD

Y5.

LSU

_CLK

6.nL

D_E

N7.

1.2V

8.D

GN

D9.

nHS

YN

C10

.LS

U_S

H11

.DG

ND

12.V

DO

1-13

.VD

O1+

14.D

GN

D15

.LS

U_5

V

1.5V

S2.

N.C

.3.

5V4.

245.

N.C

6.24

VS

1.D

GN

D2.

BLD

C_M

OT

OR

_CLK

3.nB

LDC

_MO

TO

R_R

EA

DY

4.nB

LDC

_MO

TO

R_E

N5.

5V6,

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ref

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N_1

ConnectionDiagram

(SCX-4500)

LED

(13X5DOT)

PT6961

OPE_PBA

14P

LSU

2P

INLET/

POWERSW

ACPWR

SMPS

5V/24V

2P

FUSER_FAN

2P

HVPS

THV

MHV

DEV

OPC_G

ND

SUPPLY

9P

10P

MAIN_M

HYPER

4P

COVER_SW

6P

4P

3P

THERMISTOR

CRUM

5P

DEVE.

12P

17P

CY8C

21434

TOUCH

SENSOR

P_EXIT

CIS

1.F

US

ER

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ER

M1

2.N

C3.

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ND

FLAT_M

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2.P

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TC

H3.

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4.D

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MP

TY 5P

PAPER_EMPTY

PICKUP_C

LUTCH

4P

PAPER_FEED

Reference Information


777. Reference Information

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

7.1 Tool for Troubleshooting

The following tools are recommended safe and easy troubleshooting as described in this service manual.

• DVM (Digital Volt Meter)Standard : Indicates more than 3 digits.

• Driver

Standard : "-" type, "+" type (M3 long, M3 short, M2long, M2 short).

• Tweezers

Standard : For general home use, small type.

• Cotton Swab

Standard : For general home use, for medical service.

• Cleaning Equipments

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

• Vacuum Cleaner

• Software (Driver) installation CD ROM

Service Manual



7.2 Acronyms and Abbreviations(1)

The table below explains the abbreviations and acronyms used in this service manual. Where abbreviationsor acronyms are used in the text please refer to this table.

Abbreviations Explanation

AP Access PointAC Alternating CurrentAPC Auto Power ControlASIC Application Specific Integrated CircuitASSY assemblyBIOS Basic Input Output SystemBLDC Brush-less Direct CurrentCMOS Complementary Metal Oxide SemiconductorCN connectorCON connectorCPU Central Processing Unit dB decibeldBA decibel AdBM decibel milliwattDC direct currentDCU Diagnostic Control UnitDPI Dot Per InchDRAM Dynamic Random Access MemoryDVM Digital VoltmeterECP Enhanced Capability PortEDC Embedded Diagnostic controlEEPROM Electronically Erasable Programmable Read Only MemoryEMI Electro Magnetic InterferenceEP electrophotographicEPP Enhanced Parallel PortFPOT First Printout TimeF/W firmwareGDI graphics device interfaceGND groundHBP Host Based Printing HDD Hard Disk DriveH/H High temperature and high marshy placeHV high voltageHVPS High Voltage Power SupplyI/F interfaceI/O Input and OutputIC integrated circuitIDE Intelligent Drive electronics or Imbedded Drive Electronics



Acronyms and Abbreviations(2)

Abbreviations Explanation

IEEE Institute of Electrical and Electronics Engineers. IncIPA Isopropy AlcoholIPM Images Per MinuteLAN local area networklb pound(s)LBP Laser Beam PrinterLCD Liquid Crystal DisplayLED Light Emitting DiodeL/L Low temperature and low marshy placeLSU Laser Scanning UnitMB megabyteMHz megahertzMPF Multi Purpose FeederNIC Network Interface CardN/N Normal temperature and normal marshy placeNVRAM nonvolatile random access memoryOPC Organic Photo ConductorOP Operation Panel EquipmentPBA Printed Board AssemblyPCL Printer Command Language , Printer Control LanguagePDL Page Discription LanguagePPM Page Per MinutePPS Pulse Per SecondPS Post ScriptPTL Pre-Transfer LampPWM Pulse Width ModulationQ-PID Quick Printer Initiating DeviceQ ty quantityRAM Random Access MemoryROM Read Only MemorySCF Second Cassette FeederSMPS Switching Mode Power SupplySPGP Samsung Printer Graphic ProcessorSPL Samsung Printer LanguageSpool Simultaneous Peripheral Operation OnlineSW switchsync synchronous or synchronizationUSB Universal Serial BusWECA Wireless Ethernet Compatibility Alliance

Service Manual



7.3 Select a location for the printer

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

• 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



7.4 Sample Tests Patterns

The sample patterns shown below are the standard test patterns used in the factory.The life of the toner cartridge, developer cartridge and printing speed are measured with the pattern shownbelow (5%). The A4 ISO 19752 standard pattern samples are reproduced reduced to 70% of the actual A4size.

Service Manual



7.5 Parts Life Cycle Maintenance Table

7.5.1 Parts Life Cycle Maintenance Table

7.5.2 Toner Cartridge Criterion

1) Supplies Criterion (Toner Cartridge)1. Cartridge Main Defects

- White Point, Black Point : White or Black point on printing image- Image contamination : Dirty printing image- Image Fainted : Entire Image is fainted and vertical white line emerge- Black Line : Vertical black line emerge on printing image

2) Defect Symptoms

Supplies Life Cycle Condition Engine Codition Status DisplayCustmoer

Panel Manage Responding

Toner Low Warning AnimationIndication

- 10% Remains

Toner Empty Warning AnimationIndication

- Initialized at toner change

Exhauseted

Exhauseted

No Indication

No Indication

No Indication

No Indication

Transer Roller

PickUP Roller

1K : For Product2K : For Sale

Toner Cartridge

Fuser50K(page)

:SimplexExhauseted No Indication No Indication

Replaced at Exhauseted

50K(page)

:Simplex

50K(page)

:Simplex



Symptoms Criterion Remarks

White, Black Point Clean Up OPC (10 times), if disappeared, no failure. - If continuous, failure

Image contamination Drity printing image or conteminated reverse side (Toner leakage) - Clean up OPC (10 times) and inside of machine with cloth,

if disappeared, no failure.Image Fainted After shake cartridge right and left 5~6 times, if printing image

is not fainted, no failure. (Toner Exhausted)Vertical Black Line Vertical thin line emerge, if cartridge is scratched.

- (Customer fault)



7.6 Model Information

7.6.1 Understanding for Model Code

Model code is inscribed and managed by product standard operation.If understand the standard operation. It will help to comprehend basic and derived model.

Classification

DIGIT 1 2 3 4 5 6 7 8Example S C X - 4 5 0 0

Description -

1.New model,series

Copy Speed(Default A4)

- If over 10 models with same speed are brought into, tenth model is added +1.

Definition

CodeDescription

S:Samsung C:Copier

Product Classification

Alphabet

Model abbriviation Feature/Properties

Division between code

Digit

X:Fax

1. Speed of Engine- If same speed models are released simultaneously higher model is added +1 at speed code.- If over 10 models with same speed are brought into, tenth model is added +1.

9

Main feature description- N : N/W- P : PS- S : N/W+PS- B : Bluetooth- T : 2nd CST- M : Mac Compatible- X : Scanner Beside above feature description, product conception to product planning group responsed

Space(Basic:Omitted)

10

Alphabet

Service Manual



7.6.2 Understanding Material Code & Name

Material code and name is maintained by standard criteria.If understand the criteria, it will help to order materials.1. Two different description ways for material code. ( : Digit, : Letter(Alphabet))

- Type 1 - ex) 2007-007961 R-CHIP- Type 2 - ex)JB96-01268A ELA UNIT-COVER TOP

Type1 : Parts managed by entire divisions : Materials used by all samsung products.Most electrical parts are under the type 1.

Type 2 : Parts managed by a division : Material used by a certain productMost mechanical parts are under type 2.

2. A/S Only material : Only for A/S, not related to product manufacturing.

3. Ass'y material : More than two materials are assembled. If the material order is out of service, the ordercan be processed by Ass'y material order.Picture and numbers are also described on Service manual.

Ass'y Material and A/S Only material Code are recognizable by product name.Those are under type 2 and known by material properties and beginning letters of product name.

7.6.3 F/W Upgrade Method

If F/W needs Upgrade, F/W file and usbprn file are requested.

Check "Ready" condition with power ON.

1. Paralle cable caseStart Download Rom file with "copy/b file name.fls lpt1:" commend on Dos Mode.Once Download are finished, "Reset Printer" is indicated on LCD window.Download finished Power ON/OFF.

2. USB cable case (Save attached file at certain directory)Start Download Rom file "usbprbs file name.fls" on Dos Mode and push the enter keyOnce Download are finished, "Reset Printer" is indicated on LCD window.Download finished Power ON/OFF.

Classification Material Code Material Name

A/S Only Material **81-******(JB81-00039A) AS-*****(AS-FUSE)A/S Only Material **75-******(JB75-00068A) MEC-*****(MEC-CHUTE)A/S Only Material **92-******(JB92-01131A) PBA-*****(PBAMAIN-CONTROLLER)A/S Only Material **96-******(JB96-01268A) ELA-*****(ELAUNIT-COVER TOP)A/S Only Material **97-******(JB97-01089A) MEA-*****(MEAUNIT-PULLEY IDLE)

ELECTRONICS

Samsung Electronics Co.,Ltd. June. 2007Printed in Korea.VERSION NO. : 1.00 CODE : 4500-10XAZ

GSPN (Global Service Partner Network)

North America : service.samsungportal.comLatin America : latin.samsungportal.comCIS : cis.samsungportal.comEurope : europe.samsungportal.comChina : china.samsungportal.comAsia : asia.samsungportal.comMideast & Africa : mea.samsungportal.com

scx-4500

Documents

laser system

laser product conforming

laser products

cover unit

laser safety statement

product specifications

printer components

summary of product