Samsung Scx-4824fn-Xbh 4828fn Sm

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Service Manual

DIGITAL LASER MFPModel : SCX-4824FN/XBH

Basic : SCX-4824FN/SCX-4828FN

- Print/Copy Speed

SCX-4824FN : 24 ppm (A4) / 24 cpm (A4)SCX-4828FN : 28 ppm (A4) / 28 cpm (A4)

- Print resolrution

: 1200 dpi effective output

- CPU : 360 Mhz

- PCL5e, PCL6, IBM ProPrinter, EPSON PS(4828FN)

- Memory

SCX-4824FN : 64MB(Max. 320MB)SCX-4828FN : 128MB(Max. 384MB)

- ADF : 30(4824FN) / 50(4828FN) Sheet

- MP : 1 Sheet

- Toner : 2K(Initial)/ 5K(Sales)

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Samsung Electronics Co.,Ltd. September. 2008

Printed in Korea.

VERSION NO. : 1.00 CODE : 4824-FN0XBH

GSPN (Global Service Partner Network)

North America : service.samsungportal.com

Latin America : latin.samsungportal.comCIS : cis.samsungportal.com

Europe : europe.samsungportal.comChina : china.samsungportal.com

Asia : asia.samsungportal.com

Mideast & Africa : mea.samsungportal.com


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1.1 Safety Warning 1-1

1.2 Caution for safety 1-2

1.3 ESD Precautions 1-5

1.4 Super Capacitor or Lithium Battery Precautions 1-5

3URGXFW6SHFLFDWLRQV 2-1

2.1.1 Product Overview 2-1

6SHFLFDWLRQV 2-2

2.1.3 Model Comparison 2-9

2.2 Summary of Product 2-10

2.2.1 Printer Components 2-10

2.2.2 System Layout 2-12

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2.2.4 S/W Descriptions 2-27

3.1 Disassembly and Reassemblyons on Disassembly 3-1

3.1.1 Screws used in the printer 3-2

3.2 General Disassembly 3-3

3.2.1 Front Cover 3-3

3.2.2 Rear Cover 3-3

3.2.3 Right/Left Cover 3-4

3.2.4 Scan and ADF Assy 3-5

3.2.5 Middle Cover 3-9

3.2.6 Fuser 3-9

3.2.7 LSU 3-10

3.2.8 Main Drive Assy 3-10

3.2.9 HVPS/SMPS/Main board 3-11

chapter 1 Precautions

chapter 2 Product spec and feature

Contents

chapter 3 Disassembly and Reassembly


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3.2.10 Transfer roller 3-12

3.2.11 Holder Pad unit 3-13

4.1 Alignment and Adjustments 4-1

4.1.1 Control Panel overview 4-1

4.1.2 Understanding The Status LED 4-2

4.1.3 Paper path 4-3

4.1.4 Menu Map 4-10

4.1.5 Tech Mode 4-12

4.1.6 EDC Mode 4-17

4.1.7 Abnormal Image Printing and Defective Roller 4-23

4.1.8 Error Message 4-24

4.2 Troubleshooting 4-28

4.2.1 Procedure of Checking the Symptoms 4-28

4.2.2 The cause and solution of Bad image 4-29

4.2.3 The cause and solution of the bad discharge 4-454.2.4 The cause and solution of the malfunction 4-53

4.2.5 The cause and solutions of bad environment of the software 4-62

4.2.6 Fax & Phone Problems 4-66

4.2.7 Copy Problems 4-75

4.2.8 Scanning Problems 4-79

Thumbnail 5-2

5.1 Main 5-3

5.2 Cover Assy 5-5

5.3 Cover Middle 5-7

5.4 Frame 5-9

5.5 Main Drive 5-15

5.6 Scan Assy 5-17

chapter 4 Alignment & Troubleshooting

Contents

chapter 5 Exploded Views & Parts List


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5.7 ADF Assy 5-19

5.8 Platen Assy 5-21

5.9 OPE Unit 5-23

5.10 Duplex Unit 5-25

5.11 Fuser 5-27

5.12 Cassette 5-30

5.13 SCF 5-32

6.1 Block Diagram 6-1

6.2 Connection Diagram 6-2

7.1 Tool for Troubleshooting 7-1

7.2 Acronyms and Abbreviations 7-27.2.1 Acronyms 7-2

7.2.2 Service Parts 7-4

7.3 The Sample Pattern for the Test 7-8

7.4 Selecting a location 7-9

Contents

chapter 6 System Diagram

chapter 7 Reference Information


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Precautions

Service Manual1-1

Samsung Electronics

In 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 qualied service engineers.

High voltages and lasers inside this product are dangerous. This printer should only be serviced by a

suitably trained and qualied service engineer.

(2) Use only Samsung replacement parts

There are no user serviceable parts inside the printer. Do not make any unauthorized changes or

additions to the printer, these could cause the printer to malfunction and create electric shock or re haz-ards.

(3) Laser Safety Statement

The Printer is certied 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 certied as a Class I laser product con-forming to the

requirements of IEC 825. Class I laser products are not considered to be hazardous. The laser system

and printer are designed so there is never any human access to laser radiation above a Class I level

during normal operation, user maintenance, or prescribed service condition.

Warning >> Never operate or service the printer with the protective cover removed from Laser/

Scanner assembly. The reected beam, although invisible, can damage your eyes.

When using this product, these basic safety pre-cautions should always be followed toreduce risk of re, electric shock, and injury to persons.

1. Precautions


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Precautions

Service Manual1-2

Samsung Electronics

1.2 Caution for safety

1.2.1 Toxic material

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

(1) If the LCD control panel is damaged it is possible for the liquid inside to leak. This liquid is toxic. Contact

with the skin should be avoided, wash any splashes from eyes or skin immediately and contact your

doctor. If the liquid gets into the mouth or is swallowed see a doctor immediately.

(2) Please keep Drum cartridge and Toner Cartridge away from children. The toner powder contained in the

Drum cartridge and Toner Cartridge may be harmful and if swallowed you should contact a doctor.

1.2.2 Electric Shock and Fire Safety Precautions

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

(1) Use only the correct voltage, failure to do so could damage the printer and potentially cause a re or

electric shock.

(2) Use only the power cable supplied with the printer. Use of an incorrectly specied cable could cause the

cable to overheat and potentially cause a re.

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

lead to a re.

(4) Do not allow water or other liquids to spill into the printer, this can cause electric shock. Do not allow

paper clips, pins or other foreign objects to fall into the printer these could cause a short circuit leading to

an electric shock or re hazard.

(5) Never touch the plugs on either end of the power cable with wet hands, this can cause electric shock.

When servicing the printer remove the power plug from the wall socket.(6) Use caution when inserting or removing the power connector. The power connector must be inserted

completely otherwise a poor contact could cause overheating possibly leading to a re. When removing

the power connector grip it rmly 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 and cause a re 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 re and shock risks.

(8) Ensure that the power sockets and plugs are not cracked or broken in any way. Any such defects should

be repaired immediately. Take care not to cut or damage the power cable or plugs when moving the

machine.

(9) Use caution during thunder or lightening storms. Samsung recommend that this machine be disconnectedfrom the power source when such weather conditions are expected. Do not touch the machine or the

power cord if it is still connected to the wall socket in these weather conditions.

(10) Avoid damp or dusty areas, install the printer in a clean well ventilated location. Do not position the

machine near a humidier. Damp and dust build up inside the machine can lead to overheating and

cause a re.

(11) Do not position the printer in direct sunlight. This will cause the temperature inside the printer to rise

possibly leading to the printer failing to work properly and in extreme conditions could lead to a re.

(12) Do not insert any metal objects into the machine through the ventilator fan or other part of the casing, it

could make contact with a high voltage conductor inside the machine and cause an electric shock.


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Precautions

Service Manual1-3

Samsung Electronics

1.2.3 Handling Precautions

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

printer

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

cause the printer to tip or fall.

(2) The printer contains many rollers, gears and fans. Take great care to ensure that you do not catch your

ngers, hair or clothing in any of these rotating devices.

(3) Do not place any small metal objects, containers of water, chemicals or other liquids close to the printer

which if spilled could get into the machine and cause damage or a shock or re hazard.

(4) Do not install the machine in areas with high dust or moisture levels, beside on open window or close to a

humidier 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 re.

1.2.4 Assembly / Disassembly Precautions

Replace parts carefully, always use Samsung parts. Take care to note the exact location of parts and also

cable routing before dismantling any part of the machine. Ensure all parts and cables are replaced correctly.

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

(1) Check the contents of the machine memory and make a note of any user settings. These will be erased if

the mainboard or network card is replaced.

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

(3) Disconnect printer interface cables and power cables.

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

temperature rating are correct.

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

plastic.

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

(7) Handling of the OPC Drum

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

Take care not to expose the OPC Drum either to direct sunlight or to uorescent or incandescent

room lighting. Exposure for as little as 5 mins can damage the surface? photoconductive properties

and will result in print quality degradation. Take extra care when servicing the printer. Remove the

OPC Drum and store it in a black bag or other lightproof container. Take care when working with the

covers(especially the top cover) open as light is admitted to the OPC area and can damage the OPC

Drum.

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

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


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Precautions

Service Manual1-4

Samsung Electronics

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 tocool down before disassembly.

(2) Do not put nger 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

- When transporting/installing the equipment be sure to hold the positions as shown in the reference

chapter.

The equipment is quite heavy and weighs approximately 13.6 Kg (including consumables), therefore pay

full attention when handling it.

- Be sure not to hold the movable parts or units (e.g. the control panel, DADF) when transporting the

equipment.

- Be sure to use a dedicated outlet with 110V/220Vpower input.

- The equipment must be grounded for safety.

- Select a suitable place for installation. Avoid excessive heat, high humidity, dust, vibration and direct

sunlight.

- Provide proper ventilation since the equipment emits a slight amount of ozone.

- To insure adequate working space for the copying operation, keep a minimum clearance of 10cm (3.9

on the left, 10 cm (3.9) on the right and 18 cm (7.1) on the rear.

- The equipment shall be installed near the socket outlet and shall be accessible.

- Be sure to x and plug in the power cable securely after the installation so that no one trips over it.


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Precautions

Service Manual1-5

Samsung Electronics

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 eld 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 classied as anti-static

can generate electrical charges sufcient to damage ESDs.

5. Do not use Freon-propelled chemicals. When sprayed, these can generate electrical charges sufcient 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 ones foot from a carpeted oor, can generate static

electricity sufcient to damage an ESD.

1.4 Super Capacitor or Lithium Battery Precautions

1. Exercise caution when replacing a super capacitor or Lithium battery. There could be a danger of explosion

and subsequent operator injury and/or equipment damage if incorrectly installed.

2. Be sure to replace the battery with the same or equivalent type recommended by the manufacturer.

3. Super capacitor or Lithium batteries contain toxic substances and should not be opened, crushed, or

burned for disposal.

4. Dispose of used batteries according to the manufacture? instructions.


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Product spec and feature

Service Manual2-1

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Service Manual

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2.1.2.7 Consumables (CRU)


7\SH 6LQJOH&DUWULGJH 6LQJOH&DUWULGJH


18/177


Service Manual

Samsung Electronics

2.1.2.9 Options


1HWZRUN 1$ 1$

Memory 0%0%&/30(0&/30(0 0%0%&/30(0&/30(0

6&) 2SWLRQ6&;6$ 2SWLRQ6&;6$

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19/177


Service Manual

Samsung Electronics

2.1.3 Model Comparison

Samsung

SCX-4824FN

Samsung

SCX-4728FN

HP

M2727nf

,PDJH

Printer

Speed SSP$ SSP$ SSP$

)327 VHF VHF VHF

&DVVHWWH VKHHWV VKHHWV VKHHWV

'XSOH[0RGXOH 1$ Default 1$&DUWULGJH .. .. 6DOHV..

Processor 0+] 0+] 0+]

Memory 0%0D[0% 0%0D[0% 0%0D[0%

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)$; Modem Speed NESV NESV NESV

Scan

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20/177


Service Manual

Samsung Electronics

2.2 Summary of Product

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2.2.1 Printer Components

2.2.1.1 Front View

1 Document width guides 9 Document output tray

2 ADF cover 10 USB memory port

3 Control panel 11 Paper level indicator

4 Output support 12 Optional tray 2

5 Front cover 13 Toner cartridge

6 Manual tray 14Manual tray paper widthguides

7 Tray 1 15 Scanner lid

8 Document input tray 16 Scanner glass


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Service Manual2-11

Samsung Electronics

2.2.1.2 Rear View

1

Telephone line socket

6 Handle

2

Extension telephone socket(EXT)

7 Control board cover

3 USB port 8 Rear cover

4 Network port 9 Power receptacle

515-pin optional trayconnection

10 Power switch


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Service Manual2-12

Samsung Electronics

2.2.2 System Layout

- Engine Layout

- Scanner (ADF) Layout

LSU

DEVE

CASSETTE

DUPLEX

FUSER

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23/177


Service Manual

Samsung Electronics

2.2.2.1 Feeding

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1) Separation method

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7) SCF (Second Cassette Feeder)

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Service Manual

Samsung Electronics

2.2.2.2 Transfer

$WUDQVIHUUROOHUWUDQVIHUVWRQHURQDQ23&GUXPWRWKHSDSHU

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2.2.2.4 Fuser

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1) Thermostat

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2) Heat roller

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4) Items for safety

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Safety device

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2.2.2.5 LSU (Laser Scanner Unit)

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25/177


Service Manual

Samsung Electronics

2.2.2.6 Print Cartridge

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Service Manual

Samsung Electronics

(QJLQH+:6SHFLFDWLRQV

2.2.3.1 Main Board

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DDR2 SDRAMDDR2 SDRAM

CHORUS3CHORUS3

EEPROMEEPROMNOR FlashNOR Flash

USB 2.0 ICUSB 2.0 IC

Direct USB

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Direct USB

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Network ICNetwork IC

USB DeviceInterface

USB DeviceInterface

wer part

Serial FlashSerial Flash

DDR2

SODIMM

DDR2

SODIMM

DDR2 SDRAMDDR2 SDRAM

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USB 2.0 ICUSB 2.0 IC

Direct USB

Interface

Direct USB

Interface

Network ICNetwork IC

USB DeviceInterface

USB DeviceInterface

Power part

Serial FlashSerial Flash

DDR2

SODIMM

DDR2

SODIMM


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Service Manual

Samsung Electronics

2.2.3.1(a) Asic(CHRUS3)

Package 3%*$7RWDOSDGQXPEHU>HD@

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28/177


Service Manual

Samsung Electronics

2.2.3.1(b) Memory

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29/177


Service Manual

Samsung Electronics

2.2.3.2 SMPS & HVPS board

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2.2.3.2(a) HVPS (High Voltage Power Supply)

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Service Manual

Samsung Electronics

7+97+9

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31/177


Service Manual2-21

Samsung Electronics

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CON3

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5V : 11 13 15CON2

(Heat Lamp

CON.)

CON2

(Heat Lamp

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CON1

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CON1

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F1

V2C: 250V 8A

V1 : 250V 10A

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F02

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PC22

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PC22

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32/177


Service Manual2-22

Samsung Electronics

2.2.3.2(c) FUSER AC POWER CONTROL

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PC51

TLP3061F

PC51

TLP3061F

SEM


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Service Manual

Samsung Electronics

2.2.3.3 Fax

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Service Manual

Samsung Electronics

2.2.3.4 Scan

3LFWRULDOVLJQDOLQSXWSDUWRXWSXWVLJQDORI&,6SDVVHVWKURXJK03&DSFKDQJHWR$'&DW+79DQG

GHQHGVLJQDOEHWZHHQ+79DQG&+2586SURFHVVHVWKH,PDJHVLJQDO:KHQ$)(DFFHSWHDFKSL[HO6+$6DPSOHDQG+ROG$PSOLHUWHFKQLTXHZKLFKVDPSOHVDUPOHYHORQFHLVXVHGRQHDFKSL[HOE\&,6VLJQDO

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6FDQ,PDJH&RQWURO6SHFLFDWLRQ6FDQ/LQH7LPHPVHFFK6FDQ5HVROXWLRQ0D['3,6FDQ:LGWKPP main function

,QWHUQDOELW$'&:KLWH6KDGLQJ&RUUHFWLRQ*DPPD&RUUHFWLRQ&,6,QWHUIDFH

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Service Manual

Samsung Electronics

2.2.3.5 Engine F/W

2.2.3.5(a) Control Algorithm

)HHGLQJ

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Item Description

-$0 $IWHUSLFNLQJXSSDSHUFDQQRWEHHQWHUHGGXHWRSDSHULVQRWIHG

$IWHUSLFNLQJXSSDSHUHQWHUHGEXWLWFDQQRWUHDFKWRWKHIHHGVHQVRULQFHUWDLQWLPHGXHWR

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VHQVRULVQRWRQDIWHUFHUWDLQWLPHLWLV-$0

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-$0 $IWHUWKHOHDGLQJHGJHRIWKHSDSHUSDVVHVWKHIHHGVHQVRUWKHWUDLOLQJHGJHRIWKHSDSHU

FDQQRWSDVVWKHIHHGVHQVRUDIWHUDFHUWDLQWLPH7KHIHHGVHQVRUFDQQRWEH2))

$IWHUWKHOHDGLQJHGJHRIWKHSDSHUSDVVHVWKHIHHGVHQVRUWKHSDSHUFDQQRWUHDFKWKHH[LW

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-$0 $IWHUWKHWUDLOLQJHGJHRIWKHSDSHUSDVVHVWKHIHHGVHQVRUWKHSDSHUFDQQRWSDVVWKHH[LW

VHQVRUDIWHUFHUWDLQWLPH

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-$0

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-$0

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2.2.3.5(b) Driver

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2.2.3.5(c) Transfer

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LPSUHVVLQJWRWKHWUDQVIHUUROOHULVGHFLGHGE\WKHFKDQJHGYDOXH(DFKYROWDJHYDOXHLVFRQWUROOHGDFFRUGLQJWR7LPLQJ&KDUW


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Service Manual

Samsung Electronics

2.2.3.5(d) Fusing

7KHWHPSHUDWXUHFKDQJHRIWKHKHDWUROOHUVVXUIDFHLVFKDQJHGWRWKHUHVLVWDQFHYDOXHWKURXJKWKHWKHUPLVWRU%\FRQYHUWLQJWKHYROWDJHYDOXHZKLFKLPSUHVVHGWRWKHUHVLVWDQFHWRWKHGLJLWDOYDOXHWKURXJKWKH$'FRQYHUWHUWKHWHPSHUDWXUHLVGHFLGHG7KH$&SRZHULVFRQWUROOHUE\FRPSDULQJWKHWDUJHWWHPSHUDWXUHWRWKHYDOXHIURPWKHWKHUPLVWRU,IWKHYDOXHIURPWKHWKHUPLVWRULVRXWRIFRQWUROOLQJUDQJHZKLOHFRQWUROOLQJWKHIXVLQJWKHHUURUVWDWHGLQWKHEHORZWDEOHRFFXUV

/DPS0HWKRG

Error Description

23(1+($7(5525 :KHQZDUPLQJXSLWKDVEHHQORZHUWKDQRYHUVHFRQGV

/2:+($7(5525 6WDQGE\KDVEHHQORZHUWKDQWKH6WDQGE\5HIHUHQFH7HPSHUDWXUHRYHU

VHFRQGV

3ULQWLQJKDVEHHQORZHUWKDQWKH3ULQWLQJ5HIHUHQFH7HPSHUDWXUHRYHU

VHFRQGV

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7HPSHUDWXUHRYHUVHFRQGV

29(5+($7(5525 ,WKDVEHHQKLJKHUWKDQRYHUVHFRQGV

,WKDVEHHQKLJKHUWKDQRYHUVHFRQGV

,WKDVEHHQKLJKHUWKDQWKH6WDQGE\5HIHUHQFH7HPSHUDWXUHRYHU

VHFRQGV

!7KLVFDQEHFKDQJHGLQWKHIXWXUH

2.2.3.5(e) LSU

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Error Description

Polygon Motor Error :KHQWKHSRO\JRQPRWRUVSHHGGRHVQWEHFRPHVWHDG\

+V\QF(UURU 7KHSRO\JRQPRWRUVSHHGLVVWHDG\EXWWKH+V\QFLVQRWJHQHUDWHG


37/177


Service Manual

Samsung Electronics

2.2.4 S/W Descriptions

2.2.4.1 Overview

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2.2.4.2 Architecture

Host Software is made up of

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Firmware is made up of$SSOLFDWLRQ(PXODWLRQWKDWLVDLQWHUSUHWHUWUDQVODWHGDWDUHFHLYHGIURP+RVWWRDSULQWLQJODQJXDJH3&/

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.HUQHOWKDWFRQWURODQGPDQDJHPHQWWKHZKROHSURFHGXUHLQFOXGHRI&RQWURORZDQG3ULQWLQJ-REEHIRUHWUDQVIHUWR(QJLQHV\VWHP


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Service Manual

Samsung Electronics

2.2.4.3 Data and Control Flow

The above Block Diagram is explained that:

Host Side is made up of

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6WDQGDORQH$SSOLFDWLRQWKDWLVDVLPLODU:LQGRZVRIWZDUHDVVDPHDVDERYH3RUW0RQLWRUWKDWPDQDJHVWKHQHWZRUNFRPPXQLFDWLRQEHWZHHQVSRROHUDQG1HWZRUN,QWHUIDFH&DUGRU

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*',RQO\6&;)1

3&/3&/;/


39/177


Service Manual

Samsung Electronics

Firmware Side is made up of

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(PXODWLRQLVWKDWLQWHUSUHWVWKHYDULRXVRXWSXWGDWDIURPVHOHFWHGHPXODWLRQ(QJLQHLVWKDWSULQWVUHQGHUHGELWPDSGDWDWRSDSHUZLWKUHTXLUHGVL]HDQGW\SHE\.HUQHO

$QGWKHQIRU-RE6SRROLQJIXQFWLRQIRU0XOWL8VHU0XOWL3ULQWLQJWKDWLVRFFXUUHGLQ1HWZRUNSULQWLQJDQGYDULRXVDGGLWLRQDOSULQWLQJIXQFWLRQVWKLV.HUQHOXVHPD[4XHXLQJV\VWHPVLQDPHPRU\

In Printing, the two procedures are

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The additional printing function are realized in

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Disassembly and Reassembly

Service Manual3-1

Samsung Electronics

When you disassemble and reassemble

components, you must use extreme caution. The

close proximity of cables to moving parts makes

proper routing a must.

If components are removed, any cables disturbed

by the procedure must be restored as close as

possible to their original positions. Before removing

any component from the machine, note the cable

routing that will be affected.

Whenever servicing the machine, you

must perform as follows:

1. Check to verify that documents are not stored in

memory.

2. Be sure to remove the toner cartridge before you

disassemble parts.

3. Unplug the power cord.

4. Use a at and clean surface.

5. Replace only with authorized components.

6. Do not force plastic-material components.

7. Make sure all components are in their proper

position.

Releasing Plastic Latches

Many of the parts are held in place with plastic

latches. The latches break easily; release them

carefully.

To remove such parts, press the hook end of the

latch away from the part to which it is latched.

3. Disassembly and Reassembly

3.1 General Precautions on Disassembly


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Service Manual3-2

Samsung Electronics

3.1.1 Screws used in the printer

SEC_CODE Location Description Qty

6002-000440Duplex Unit

SCREW-TAPPING;PWH,+,-,2,M3,L8,ZPC(BLK),SWRCH18A,- 1

6003-000196 SCREW-TAPTITE;PWH,+,B,M3,L10,NI PLT,SWRCH18A 3

6003-000282 CARTRIDGE-TONER SCREW-TAPTITE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- 10

6003-000196 ELA HOU-SCAN_HIGH SCREW-TAPTITE;PWH,+,B,M3,L10,NI PLT,SWRCH18A 10

6003-000269 ELA HOU-ADF MOTOR SCREW-TAPTITE;BH,+,-,S,M3,L6,ZPC(WHT),SWRCH18A,- 3

6003-000196 ELA HOU-ADF LOWER SCREW-TAPTITE;PWH,+,B,M3,L10,NI PLT,SWRCH18A 6

6003-000196 MEA-COVER PLATEN SCREW-TAPTITE;PWH,+,B,M3,L10,NI PLT,SWRCH18A 6

6003-000196 ELA HOU-OPE SCREW-TAPTITE;PWH,+,B,M3,L10,NI PLT,SWRCH18A 4

6003-000196 ELA HOU-PLATEN_HIGH SCREW-TAPTITE;PWH,+,B,M3,L10,NI PLT,SWRCH18A 4

6003-000196 ELA HOU-SCAN LOWER_H SCREW-TAPTITE;PWH,+,B,M3,L10,NI PLT,SWRCH18A 9

6003-000196 ELA UNIT-STANDARD SCAN SCREW-TAPTITE;PWH,+,B,M3,L10,NI PLT,SWRCH18A 3

6003-000269 ELA UNIT-SCAN DRIVE SCREW-TAPTITE;BH,+,-,S,M3,L6,ZPC(WHT),SWRCH18A,- 2

6002-000440

ELA HOU-FRAME

SCREW-TAPPING;PWH,+,-,2,M3,L8,ZPC(BLK),SWRCH18A,- 13

6003-000196 SCREW-TAPTITE;PWH,+,B,M3,L10,NI PLT,SWRCH18A 64

6003-000301 SCREW-TAPTITE;BH,+,-,S,M4,L6,ZPC(WHT),SWRCH18A,- 1

6006-001078SCREW-TAPTITE;PH,+,WSP,B,M3,L10,ZPC(WHT),

SWRCH18A,-1

6003-000269 ELA UNIT-DRIVE SCREW-TAPTITE;BH,+,-,S,M3,L6,ZPC(WHT),SWRCH18A,- 11

6003-000196ELA UNIT-FUSER

SCREW-TAPTITE;PWH,+,B,M3,L10,NI PLT,SWRCH18A 3

6003-000282 SCREW-TAPTITE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- 4

6003-000282 MEA-COVER FRONT SCREW-TAPTITE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- 1

6003-000196ELA HOU-MAIN LINE


6003-001256 SCREW-TAPTITE;BH,+,B,M4,L10,NI PLT,SWRCH18A 4

6003-000282 ELA UNIT-LSU SCREW-TAPTITE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- 10

6003-000282 ELA UNIT-LSU LD SCREW-TAPTITE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- 2

6003-000196

MEA UNIT-CASSETTE


6003-000261 SCREW-TAPTITE;BH,+,-,B,M3,L6,ZPC(WHT),SWRCH18A,- 1

6003-000264 SCREW-TAPTITE;PWH,+,-,B,M3,L6,ZPC(WHT),SWRCH18A,- 1


42/177


Service Manual3-3

Samsung Electronics

3.2 General Disassembly

3.2.1 Front Cover

3.2.2 Rear Cover

1. Open the front cover after take out the cassette. 2. Separate the front cover from the lock the frame

by pulling the front cover to the direction of

arrow.

1. Remove the Duplex unit. 2. Open the rear cover. And separate the rear

cover from the locking by pulling the rear cover

to the direction of arrow.


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Service Manual3-4

Samsung Electronics

3.2.3 Right/Left Cover

1. Remove the one screw. And pull and release the

right cover somewhat.

2. Release the right cover after unplug the 1

connector from Main PBA.

3. Pull the left cover to the direction of arrow and

release it.


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Service Manual3-5

Samsung Electronics

3.2.4 Scan and ADF Assy

3.2.4.1 ADF Unit

1. Remove the 2 screws after remove the right

cover.

2. Remove the one screw and connected harness

from Main board. And lift the Scan Assy to thedirection of arrow.

1. Unplug the harness after remove the cap

harness as shown below.

2. Lift up and release the ADF Assy.


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Service Manual3-6

Samsung Electronics

3.2.4.2 Stacker TX

1. Remove the 2 screws from the bottom of ADF

Assy.

2. Lift up and release the Stacker TX


46/177


Service Manual3-7

Samsung Electronics

3.2.4.3 ADF Engine unit

1. Open the ADF cover and remove it. And remove the pick-up roller by following below sequence.

2. Remove the ADF engine unit after remove the 2

screws from the bottom of SET.

3. Remove the 2 screws of the ADF cover upper.

And then lift it up.

13

2

Locking

13

2

13

2

Locking


47/177


Service Manual3-8

Samsung Electronics

3.2.4.4 OPE Unit

3.2.4.5 CIS Unit

1. Pull up the OPE unit. 2. Remove the 2 connector and release the OPE

unit.

1. Remove the 4 screws of the Scan upper. 2. Remove the 4 screw and 1 CIS cable. And

release the CIS unit.

HookHook


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Service Manual3-9

Samsung Electronics

3.2.5 Middle Cover

3.2.6 Fuser

1. Remove the 2 screws as shown below. 2. Remove the 2 screws from the front and rear of

the SET. Unplug the harness connected to themain board. And lift the middle cover up.

1. Remove the rear cover. Remove the Guide rear

by pushing both side and removing the hinge.

2. Remove the 4 screw. And remove the fuser after

remove the connector.

CAUTION

The fuser is very hot. So turn the printer off

and wait until the printer to cool before

replacing it.


49/177


Service Manual3-10

Samsung Electronics

3.2.7 LSU

3.2.8 Main Drive Assy

- Before disassembly, remove the cassette, Cover front, Cover left, Cover rear.

1. Release the LSU after remove the 4 screws and one connector.

1. Remove the rear cover. Remove the Guide rear

by pushing both side and removing the hinge.

2. Remove the 4 screw. And remove the fuser after

remove the connector.


50/177


Service Manual3-11

Samsung Electronics

3.2.9 HVPS/SMPS/Main board

- Before disassembly, remove the cover front, cover rear, cover rigth.

1. Release the HVPS board after remove the 6 screws and 1 connector.

2. Release the SMPS board after remove the 4

screws and 2 connector.

3. Release the Main board after remove the 4

screws and all harness.


51/177


Service Manual3-12

Samsung Electronics

3.2.10 Transfer roller

1. Push HOLDER-TRANSFER, which holds the transfer roller and remove the roller from set.

Caution - Be carefull not to touch the sponge of Transfer Roller.


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Service Manual3-13

Samsung Electronics

3.2.11 Holder Pad unit

1. Remove the CASSETTE from SET. 2. Disassemble HOLER-PAD after putting out three

HOOKs


53/177

Alignment & Troubleshooting

Service Manual4-1

Samsung Electronics

4.1 Alignment and Adjustments

4.1.1 Control Panel overview

4. Alignment & TroubleshootingThis chapter describes the main functions for service, such as the product maintenance method, the testoutput related to maintenance and repair, DCU using method, Jam removing method, and so on. It includesthe contents of manual.

1 ID Copy You can copy both sides of the ID Card like a drivers license to a single side of paper.

2 Direct USB

Allows you to directly print files stored on a USB Memory device when it is inserted into the

USB memory port on the front of your machine. (SCX-4x28 Series only)

Reduce/Enlarge Makes a copy smaller or larger than the original. (SCX-4x24 Series only)

3 Display Shows the current status and prompts during an operation.

4 Status Shows the status of your machine.

5 Fax Activates Fax mode.

6 Copy Activates Copy mode.

7 Scan/Email Activates Scan mode.

8 Menu Enters Menu mode and scrolls through the available menus.

9 Left/right arrow Scroll through the options available in the selected menu, and increase or decrease values.

10 OK Confirms the selection on the screen.

11 Back Sends you back to the upper menu level.

12 Number keypad Dials a number or enters alphanumeric characters.

13 Address BookAllows you to store frequently used fax numbers in memory or search for stored fax numbersor email addresses.

14 Redial/Pause In ready mode, redials the last number, or in Edit mode, inserts a pause into a fax number.

15 On Hook Dial Engages the telephone line.

16 Stop/Clear

Stops an operation at any time. In ready mode, clears/cancels the copy options, such as the

darkness, the document type setting, the copy size, and the number of copies.

17 Start Starts a job.


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Service Manual4-2

Samsung Electronics

4.1.2 Understanding The Status LED

The color of the Status LED indicates the machines current status.

Status Description

Off 7KHPDFKLQHLVSRZHUHGRIIOLQH

7KHPDFKLQHLVLQSRZHUVDYHPRGH:KHQGDWDLVUHFHLYHGRUDQ\

button is pressed, it switches to on-line automatically.

Green On 7KHPDFKLQHLVSRZHUHGRQDQGFDQEHXVHG

Blinking :KHQWKHJUHHQ/('VORZO\EOLQNVWKHPDFKLQHLVUHFHLYLQJGDWDIURP

the computer.

:KHQWKHJUHHQ/('UDSLGO\EOLQNVWKHPDFKLQHLVSULQWLQJGDWD

Red On $SUREOHPKDVRFFXUUHGVXFKDVDSDSHUMDPFRYHURSHQRUQRSDSHULQ

the tray, so that the machine cannot continue the job.7KHWRQHUFDUWULGJHLVHPSW\RUQHHGVWREHFKDQJHG

Blinking $PLQRUHUURUKDVRFFXUUHGDQGWKHPDFKLQHLVZDLWLQJIRUWKHHUURUWREH

cleared.

7KHWRQHUFDUWULGJHLVORZ2UGHUDQHZWRQHUFDUWULGJH


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Service Manual4-3

Samsung Electronics

4.1.3 Paper path

Scanner Part

Engine Part

LSU

DEVE

CASSETTE

DUPLEX

FUSER

$')52//(5 PICK-UP52//(5

COVER OPENCOVER OPEN

)(('52//(5

SCAN UPPERSCAN UPPER

$')*/$66:+,7(%$5

EXIT 52//(5ADF-UPPER

$')/2:(5

ADF-UPPER

$')/2:(5


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Service Manual4-4

Samsung Electronics

4.1.3.1 Clearing Document Jams

:KHQDQRULJLQDOMDPVZKLOHSDVVLQJWKURXJKWKH$')'RFXPHQW-DPDSSHDUVRQWKHGLVSOD\

Input Misfeed

1. Remove any remaining pages from the ADF.

2. Open the ADF cover.

3. Rotate the bushing on the right end of the ADFroller toward the ADF (1) and remove the rollerfrom the slot (2). Pull the document gently to theleft and out of the ADF.

4. Align the left end of the ADF roller with the slotand push the right end of the ADF roller into theright slot (1). Rotate the bushing on the right endof the roller toward the document input tray (2).

5. Close the ADF cover. Then load the removedpage(s), if any, back into the ADF.

1 ADF cover


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Service Manual4-5

Samsung Electronics

Exit misfeed

1. Remove any remaining pages from the ADF.

2. Seize the misfeed paper, and remove the paperfrom the document output tray by carefullypulling it to the right using both hands.

/RDGWKHUHPRYHGSDJHVEDFNLQWRWKH$')

Roller misfeed

1. Open the scanner lid.

2. Seize the misfeed paper, and remove the paperfrom the feed area by carefully pulling it to theright using both hands.

3. Close the scanner lid. Then load the removedpages back into the ADF.


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Service Manual4-6

Samsung Electronics

4.1.3.2 Clearing paper jams

:KHQDSDSHUMDPRFFXUVWKHZDUQLQJPHVVDJHDSSHDUVRQWKHGLVSOD\VFUHHQ5HIHUWRWKHWDEOHEHORZWR

locate and clear the paper jam.

Message Location of jam

Paper Jam 0

Open/Close DoorIn the paper feed area or inside the machine

Paper Jam 1

Open/Close DoorInside the machine

Paper Jam 2

Check InsideInside the machine or in the fuser area

Duplex Jam 0

Check InsideInside the machine

Duplex Jam 1

Open/Close DoorIn the paper feed area or inside the machine

In the paper feed area

If paper is jammed in the paper feed area, followthe next steps to release the jammed paper.

1. Pull the tray open.

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

If the paper does not move when you pull, or ifyou do not see the paper in this area, check Inthe toner cartridge area.

3. Insert the tray back into the machine. Printingautomatically resumes.


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Service Manual4-7

Samsung Electronics

In the manual tray

:KHQ\RXSULQWXVLQJWKHPDQXDOWUD\DQGWKH

machine detects that there is either no paper orthat the paper has been improperly loaded, followthe next steps to release the jammed paper.

1. Check if the paper is stuck in the feeding area,and if so, pull it out gently and slowly.

/RDGDSDSHULQWRWKHPDQXDOWUD\

3. Open the front cover and close it. The machinewill resume printing.

In the toner cartridge area

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

1. Open the front cover and pull the toner cartridgeout

2. Remove the jammed paper by gently pulling it

straight out as shown below.

3. Replace the toner cartridge and close the frontcover. Printing automatically resumes.


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Service Manual4-8

Samsung Electronics

In the paper exit area

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

1. If a long portion of the paper is visible, pull itstraight out. Open and close the front coverUPO\7KHPDFKLQHZLOOUHVXPHSULQWLQJ

,I\RXFDQQRWQGWKHMDPPHGSDSHURULIWKHUHLV

any resistance removing the paper, stop pullingand go to step 2.

2. Open the rear cover.

3. Pull the guide rear on each side down andcarefully take the jammed paper out of themachine. Return the guide rear to its originalposition.

4. Close the rear cover. Printing automaticallyresumes.

In the duplex unit area

If the duplex unit is not inserted correctly, paperjam may occur. Make sure that the duplex unit isinserted correctly.

1. Pull the duplex unit out of the machine.

2. Remove the jammed paper from the duplex unit.

If the paper does not come out with the duplexunit, remove the paper from the bottom of themachine.

,I\RXFDQQRWQGWKHMDPPHGSDSHURULIWKHUHLVany resistance removing the paper, stop pullingand go to step 3.

1 Guide rear


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Service Manual4-9

Samsung Electronics

3. Open the rear cover.

4. Pull the guide rear on each side down andremove the paper. Return the guide rear to itsoriginal position.

5. Close the rear cover. Printing automatically

resumes.

In the optional tray

If paper is jammed in the optional Tray, follow thenext steps to release the jammed paper.

1. Pull the optional tray open.

2. If you see the jammed paper, remove the paperfrom the machine by gently pulling it straight outas shown below.

,I\RXFDQQRWQGWKHMDPPHGSDSHURULIWKHUHLVany resistance removing the paper, stop pullingand go to step 3.

3. Pull the tray half.

4. Remove the jammed paper by gently pulling thepaper straight up and out.

5. Insert the trays back into the machine. Printingautomatically resumes.

1 Guide rear


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Service Manual4-10

Samsung Electronics

4.1.4 Menu Map

The control panel provides access to various menus to set up the machine or use the machines functions.

These menus can be accessed by pressing Menu. Refer to the following diagram. Menus available in Fax,Copy, or Scan mode vary.

.

Fa

xFeature

Darkn

ess

Resolution

MultiSend

Delay

Send

PrioritySend

Forwa

rd

Secur

eReceive

AddP

age

Cance

lJob

FaxSetup

Sending

RedialTim

es

RedialTerm

PrefixDial

ECMMode

SendReport

ImageTCR

DialMode

Receiving

ReceiveMode

RingtoAnswer

FaxSetup

(Continued)

StampRcvName

RcvStartCode

AutoReduction

DiscardSize

JunkFaxSetup

DRPD

Mode

DuplexPrint

Ch

angeDefault

Resolution

Darkness

Au

toReport

CopyFeature

Reduce/Enlarge

Darkness

OriginalType

/D\out

Normal

2-Up

4-Up

IDCopy

PosterCopy

CloneCopy

AdjustBkgd.

CopySetup

Duplex

ChangeDefault

Copies

CopyCollation

Reduce/Enlarge

Darkness

OriginalType

ScanFeature

USBFeature

ScanSize

OriginalType

Resolution

ScanColor

ScanFormat

E-mailFeature

ScanSize

OriginalType

Resolution

ScanColor

ScanFormat

ScanSetup

ChangeDefault

USBDefault

E-mailDefault

SystemSetup

(Continued)

Report

AllReport

Configuration

SuppliesInfo

AddressBook

SendReport

SentReport

FaxRcvReport

ScheduleJobs

JunkFaxReport

NetworkInfo.

UserAuth

/LVt

Maintenance

&/REmptyMsg

IgnoreToner

SupplieV/ife

SerialNumber

SystemSetup

(Continued)

ClearSetting

AllSettings

FaxSetup

CopySetup

ScanSetup

SystemSetup

Network

AddressBook

SentReport

FaxRcvReport

Network

TCP/IP

EthernetSpeed

ClearSetting

NetworkInfo

SystemSetup

MachineSetup

MachineID

MachineFaxNo.

Date&Time

ClockMode

/Dnguage

DefaultMode

PowerSave

Timeout

JobTimeout

AltitudeAdj.

ImportSetting

ExportSetting

PaperSetup

PaperSize

PaperType

PaperSource

Sound/Volume

KeySound

AlarmSound

Speaker

Ringer


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Service Manual4-11

Samsung Electronics

4.1.4.1 Accessing to menus

The next steps are the example to print the menu map of this machine, and they are the general way to

VHOHFWPHQXDQGFRQJXUH\RXUPDFKLQH

1. Make sure your machine is properly connected all the necessary cables, and turn on the machine.2. Press the Menu button until you see the menu (ex. Information) you want on the bottom line of the display.3. Press the OK button to access the menu.3UHVVWKH/HIWULJKWDUURZEXWWRQVXQWLOWKHPHQXLWHPH[0HQX0DS\RXZDQWGLVSOD\VRQWKHERWWRP

line.3UHVVWKH2.EXWWRQWRFRQUPWKHVHOHFWHGLWHP

3UHVVWKH/HIWULJKWDUURZEXWWRQVXQWLOWKHPHQXLWHPH[3ULQW"\RXZDQWGLVSOD\VRQWKHERWWRPOLQH

7. Press the OK button to process your selection, save your input or selection.An asterisk (*) appears next to the selection on the display, indicating that it is now the default.

8. To exit the menu, press the Back button repeatedly, or the Stop button.

Note - If you want to set the basic menu items, please consult the user guide.


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Service Manual4-12

Samsung Electronics

4.1.5 Tech Mode

4.1.5.1 How to Enter Tech Mode

In service (tech) mode, the technician can check the machine and perform various test to isolate the causeof a malfunction.

:KLOHLQ7HFKPRGHWKHPDFKLQHVWLOOSHUIRUPVDOOQRUPDORSHUDWLRQV

To enter the Tech mode

To enter the Tech mode, press LQVHTXHQFHDQGWKH/&'EULH\

GLVSOD\V7(&+WKHPDFKLQHKDVHQWHUHGVHUYLFHWHFKPRGH

4.1.5.2 Setting-up System in Tech Mode

In service (tech) mode, the technician can check the machine and perform various test to isolate the causeof a malfunction.

SCX-4824FN/4828FN

6HQG/HYHO'70)/HYHOPause TimeDial ModeModem SpeedError RateRDSClear All MemClear CountsFlash UpgradeSilence Time

Switch TestModem TestDram TestRom TestPattern TestShading Test

All ReportProtocolConfiguration.H\+LVWRU\Error InfoUsage PageComponent Check

Service Support


65/177


Service Manual4-13

Samsung Electronics

4.1.5.3 Data Setup

SEND LEVEL

You can set the level of the transmission signal. Typically, the Tx level should be under -12 dBm.&DXWLRQ7KH6HQG)D[/HYHOLVVHWDWWKHEHVWFRQGLWLRQLQWKHVKLSPHQWIURPIDFWRU\1HYHUFKDQJHVHWWLQJV

arbitrarily.

DIAL MODEThis function can choose dial method.*Default : Dial(Dial/Pulse)

MODEM SPEEDYou can set the maximum modem speed.Communication is done with modem speed automatically set at lower speed when communicating with aslower speed modem since communication is done on the standard of the side where modem speed is low

for transmission/reception. It is best set 33.6Kbps as default setting.

ERROR RATE:KHQWKHHUURUUDWHLVDERXWH[FHHGWKHVHWYDOXHWKH%DXGUDWHDXWRPDWLFDOO\DGMXVWVWRESV

This ensures that the error rate remains below the set value.You can select the rate between 5% and 10%.

CLEAR ALL MEMORYThe function resets the system to factory default settings.This function is used to reset the system to the initial value when the product is functioning abnormally. All thevalues are returned to the default values, and all the information, which was set by the user, will be erased.

< Method >6HOHFWWKH>0(025


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Service Manual4-14

Samsung Electronics

Flash Upgrade7KH)LUPZDUH8SJUDGHIXQFWLRQDQGKDVWZRPHWKRGV/RFDODQG5HPRWH

1) Local Machine Upgrade5&35HPRWH&RQWURO3DQHOPRGH

This method is for USB Port Connect to PC and activate RCP(Remote Control Panel) to upgrade theFirmware.

< Method >

+RZWR8SGDWH)LUPZDUHXVLQJ5&3

1. Connect PC and Printer with USB Cable.2. Execute RCP and select Firmware Update.6HDUFK)LUPZDUHOHWRXSGDWHZLWK%URZVH,FRQ

&OLFN8SGDWHLFRQUPZDUHOHLVWUDQVPLWWHGWR3ULQWHUDXWRPDWLFDOO\DQGSULQWHULVLQLWLDOL]HGZKHQLW

QLVKHG

5. Click Refresh icon and check what is updated.

'26&RPPDQGPRGH

This method is just for USB Port. Connect to PC with USB cable and enter DOS Command to upgradethe Firmware

< Method >

7KHUVWRIDOOQHHGWKHOHVGRZQEDWGRZQBFRPELQISUWH[HDQG5RP)LOHOHQDPHIRUXSJUDGH

6DYHWKHOHVLQWKHVDPHIROGHU

2. In the DOS, input as below and push the enter key. Then, it will be automatically upgraded.3. There are two commands for the conditions of product.:KHQWKHSURGXFWLVLQLGOHFRQGLWLRQGRZQURPOH

:KHQWKHSURGXFWLVLQ5HDG\FRQGLWLRQ7(&+02'('$7$6(783)/$6+83*5$'(/2&$/FRS\E

URPOHOSW4. Do not turn off the power while upgrading process.

2) Remote Upgrade7KLVLVDIXQFWLRQWKDWDID[ZLWKWKHODWHVWUPZDUHVHQGVOHVWRDID[LQORQJGLVWDQFHWKURXJKWHOHSKRQH

line.

< Method >

%HIRUHUHPRWHXSJUDGHWKHODWHVWUPZDUHVKRXOGEHORDGHGLQWRWKHPDFKLQH

7(&+02'('$7$6(783)/$6+83*5$'(5(027(

2. Input the fax number, which needs to be upgraded. (Several faxes can be upgraded at the same time. Inthis case, enter the each fax number.)

$IWHUSXVKWKHHQWHUEXWWRQVHQGWKHUPZDUHOHE\FDOOLQJWRWKHDSSRLQWHGQXPEHU$URXQGa

PLQXWHVQHHGVWRVHQGWKHOH

< Caution >

1. sending and receiving fax must be the same model.2. A sending fax must be set up as ECM mode, and a receiving memory must be set up as 100%. If not, the

function operates abnormally


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Service Manual4-15

Samsung Electronics

S/W of Maintenance

1. Clearing the Memory


68/177


Service Manual4-16

Samsung Electronics

3. Remote Diagnostic System(RDS)5'6DQG)7(*7$XWRPDWLF2UGHULQJ6\VWHPZLOOHQKDQFHWKHTXDOLW\DQGWKHVSHHGRIDIWHUVDOHV

service and monitor the performance of the MFP at the customer site.0)36KRXOGEHFRQQHFWHGE\0)36HUYHU

3.1 Required components of RDS

RDS for MFP system consists of the following three components that communicate with each other1. Main RDS Server connected to FAX-MODEM.2. RDS Client Application.3. RDS on MFP.

3.2 Enable of RDS on MFP

This value is in Tech Mode.The factory default for Consumables Status Update / Error Proactive value is Disabled.

< Method >

1. MFP Should be connected by RDS Server.2. Service numbers should have the proper values.7(&+02'(!'$7$6(783!127,)


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Service Manual4-17

Samsung Electronics

4.1.5.4 Machine Test

SWITCH TEST

8VHWKLVIHDWXUHWRWHVWDOONH\VRQWKHRSHUDWLRQFRQWUROSDQHO7KHUHVXOWLVGLVSOD\HGRQWKH/&'ZLQGRZeach time you press a key.

MODEM TESTUse this feature to hear various transmission signals to the telephone line from the modem and to check themodem. If no transmission signal sound is heard, it means the modem part of the main board malfunctioned.

DRAM TEST8VHWKLVIHDWXUHWRWHVWWKHPDFKLQHV'5$07KHUHVXOWDSSHDUVLQWKH/&'GLVSOD\

,IDOOPHPRU\LVZRUNLQJQRUPDOO\WKH/&'VKRZV2.!!

ROM TEST

8VHWKLVIHDWXUHWRWHVWWKHPDFKLQH65207KHUHVXOWDQGWKHVRIWZDUHYHUVLRQDSSHDULQWKH/&'GLVSOD\)/$6+9(59

(1*,1(9(59

PATTERN TESTUsing this pattern printout, you can check if the printer mechanism is functioning properly.It is needed in the production progress. Service person doesnt need to use it.

SHADING TEST7KHIXQFWLRQLVWRJHWWKHRSWLPXPVFDQTXDOLW\E\WKHVSHFLFFKDUDFWHURIWKH&&'&KDUJH&RXSOHG

Device). If the copy image quality is poor, perform this function to check the condition CCD unit.

< Method >

6HOHFWWKH>$'-8676+$',1*@DWWKH7(&+02'(

2. Push the SET UP button then an image will bescanned.

$IWHUWKHVFDQ&&'6+$',1*352),/(ZLOOEH

print out.4. If the printed image is different to the image, the

CCD is defect.

NOTICE : When you test CCD, make sure that the

cover is closed.


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Service Manual4-18

Samsung Electronics

4.1.5.5 Report

PROTOCOL LIST

This list shows the sequence of the CCITT group 3 T.30 protocol during the most recent sending or receivingoperation. Use this list to check for send and receive errors. If a communication error occurs while thePDFKLQHLVLQ7(&+PRGHWKHSURWRFROOLVWZLOOSULQWDXWRPDWLFDOO\

OTHER ITEMThis list provides a list of the user system data settings and tech mode settings.

&RQJXUDWLRQUHSRUW


71/177


Service Manual4-19

Samsung Electronics

supplies information report


72/177


Service Manual4-20

Samsung Electronics

4.1.6 EDC Mode

EDC Mode is independently controled system f/w and diagnose printers each function.

0HWKRGWRHQWHU

$IWHUWXUQRQWKHV\VWHPSRZHUFKHFNWKH5HDG\PHVVDJHRQWKH/&'

2. To enter the EDC Mode, Push the button like next time.0HQX6WRS/HIWDUURZ%DFN2.5LJKWDUURZ

7KHPHVVDJH&20321(177(673UHVV0HQX.H\GLVSOD\RQWKH/&'

7RJHWRXWRIWKH('&0RGH3UHVVWKH6WRSNH\


73/177


Service Manual4-21

Samsung Electronics

('&0RGH0HQX

0. Cover Status

Item Description

Front Cover :KHQWKHIURQWFRYHURSHQHG2SHQPHVVDJHGLVSOD\/&',IWKHIURQW

FRYHUFORVHG&ORVHGPHVVDJHGLVSOD\/&'

1. Sensor Status

Item Description

Regi/Feed/Exit Sensor ,IDFWXDWRULVFKHFNHGE\VHQVRU:LWKRXW3DSHUPHVVDJHZLOOEH

GLVSOD\HGLIQRW:LWK3DSHUZLOOEH

Empty ,ISDSHUH[LVWVLQWKHWUD\3UHVHQWZLOOEHGLVSOD\HG,IQRW(PSW\ZLOO

be.

2. Motor Test

Item Description

Main Mtr Nor. ,I2.NH\LVSXVKHGDIWHU21GLVSOD\HGPRWRUZLOOEHUXQ0DLQPRWRU

ZLOODXWRVWRSDIWHUVHFRQGVDQG2))PHVVDJHZLOOEHGLVSOD\HG

Slow ,I2.NH\LVSXVKHGDIWHU21GLVSOD\HGPRWRUZLOOEHVORZO\UXQ

0DLQPRWRUZLOODXWRVWRSDIWHUVHFRQGVDQG2))PHVVDJHZLOOEH

displayed.

3. Fan Test

Item Description

Fuser Fan ,I2.NH\LVSXVKHGDIWHU21GLVSOD\HGIDQZLOOEHUXQ)XVHUIDQZLOO

DXWRVWRSDIWHUVHFRQGVDQG2))PHVVDJHZLOOEHGLVSOD\HG

SMPS Fan ,I2.NH\LVSXVKHGDIWHU21GLVSOD\HGIDQZLOOEHUXQ6036IDQZLOO


/68)DQ ,I2. NH\LVSXVKHGDIWHU21 GLVSOD\HGIDQZLOOEHUXQ/68IDQZLOO


4. Clutch Test

Item Description

Pick up Clutch :KHQ2. NH\LVSXVKHGDIWHU21PHVVDJHGLVSOD\HGFOXWFKWXUQRQ

SLFNXSFOXWFKZLOOEHWXUQRIIDIWHUVHFRQGVDQG2))PHVVDJHZLOOEH

displayed.

Regi Clutch :KHQ2. NH\LVSXVKHGDIWHU21PHVVDJHGLVSOD\HGFOXWFKWXUQRQ

SLFNXSFOXWFKZLOOEHWXUQRIIDIWHUVHFRQGVDQG2))PHVVDJHZLOOEH

displayed.


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Service Manual4-22

Samsung Electronics

5. Fuser Ctrl

Item Description

Temp Control )XVHURQDQGRII21LVVHOHFWHGIXVHUZLOOEHDFWLYHDQGGLVSOD\WKH

IXVHUWHPSHUDWXUH>;;;@EXW2))LVVHOHFWHGIXVHUZLOOEHVWRSDQG>@

display

Fuser Temp. )XVHUWHPSHUDWXUHGLVSOD\HGRQ/&'H[DPSOH>@

6. LSU Control

Item Description

/'3RZHU :KHQ2.NH\LVSXVKHGDIWHU21PHVVDJHGLVSOD\HG2))PHVVDJH

will be displayed after 10 seconds

/680RWRU ,I2.NH\LVSXVKHGDIWHU21 GLVSOD\HGPRWRUZLOOEHUXQ/68PRWRUZLOODXWRVWRSDIWHUVHFRQGVDQG2))PHVVDJHZLOOEHGLVSOD\HG

/685HDG\ ,I2.NH\LVSXVKHGDIWHU21 GLVSOD\HGPRWRUZLOOEHUXQ PHVVDJH

will be displayed.

+V\QF ,I2. NH\LVSXVKHGDIWHU21 GLVSOD\HGPRWRUZLOOEHUXQ PHVVDJH

will be displayed.

7. DEV Control

Item Description

7+9 ,I2. NH\LVSXVKHGDIWHU21 GLVSOD\HG7+9ZLOOEHWXUQHGRQ

7+9 ,I2. NH\LVSXVKHGDIWHU21 GLVSOD\HG7+9ZLOOEHWXUQHGRQ

Dev Bias ,I2.NH\LVSXVKHGDIWHU21GLVSOD\HG'HY%LDVZLOOEHWXUQHGRQ

0+9%LDV ,I2.NH\LVSXVKHGDIWHU21 GLVSOD\HG0+9%LDVZLOOEHWXUQHGRQ

$&521


75/177


Service Manual4-23

Samsung Electronics

4.1.7 Abnormal Image Printing and Defective Roller

If abnormal image prints periodically, check the parts shown below.

No Roller Abnormal image period Kind of abnormal image

1 OPC Drum 75.5mm :KLWHVSRW%ORFN6SRWV

2 Charge Roller 26.7mm Block Spot and Periodic Band

3 Supply Roller 47.1mm Periodic Band by little difference of density

4 Developing Roller 35.2mm :KLWH6SRW+RUL]RQWDOEODFNEDQG

5 Transfer Roller 47mm Ghost, Damaged Image by abnormal transfer

6 +HDW5ROOHU 77.8mm Black Spots or Vertical Black Band

7-1 3UHVVXUH5ROOHUBVW 62.8mm Blackground

7-2 3UHVVXUH5ROOHUBVW 37.7mm Blackground

7-17-2


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Service Manual4-24

Samsung Electronics

4.1.8 Error Message

Messages appear on the control panel display to indicate the machines status or errors. Refer to the tables

below to understand the messages meaning and correct the problem if necessary. Messages and theirmeanings are listed in alphabetical order.

[[[LQGLFDWHVWKHPHGLDW\SH

\\\LQGLFDWHVWKHWUD\

Message Meaning Suggested solutions

[COMM. Error] The machine has a communication

problem.

Ask the sender to try again.

[Incompatible] The machine has received a fax from

Samsung Scx-4824fn-Xbh 4828fn Sm

Documents