Samsung Xpress M262x, Xpress M282x Service Manual

Mono Laser Printer

Xpress M262x / M282x Series

SERVICEMANUAL

Mono Laser Printer

Contents

1. Precautions

2. Product Specifications and Description

3. Disassembly and Reassembly

4. Troubleshooting

5. System Diagrams

6. Schematic Diagrams

Refer to the service manual in the GSPN (see the rear cover) for more information.

Contents

Contents

1. Precautions ......................................................................................................................................				1	−	1
1.1.	Safety warning ........................................................................................................................			1	−	1
1.2.	Caution for safety ....................................................................................................................			1	−	2
	1.2.1.	Toxic material.............................................................................................................		1	−	2
	1.2.2. Electric shock and fire safety precautions .........................................................................			1	−	2
	1.2.3.	Handling precautions ...................................................................................................		1	−	4
	1.2.4. Assembly and Disassembly precautions...........................................................................			1	−	4
	1.2.5. Disregarding this warning may cause bodily injury ............................................................			1	−	5
1.3. Caution for Data Loss...............................................................................................................				1	−	6
1.4.	ESD precautions......................................................................................................................			1	−	7
2. Product Specifications and Description..................................................................................................				2	−	1
2.1.	Product Specifications ..............................................................................................................			2	−	1
	2.1.1.	Product Overview........................................................................................................		2	−	1
	2.1.2.	Specifications .............................................................................................................		2	−	2
		2.1.2.1.	General Print Engine......................................................................................	2	−	2
		2.1.2.2.	Controller and Software..................................................................................	2	−	2
		2.1.2.3.	Paper Handling.............................................................................................	2	−	4
		2.1.2.4.	Consumables................................................................................................	2	−	4
		2.1.2.5.	Reliability and Service ...................................................................................	2	−	5
		2.1.2.6.	Environment ................................................................................................	2	−	5
		2.1.2.7.	Options .......................................................................................................	2	−	6
		2.1.2.8.	Maintenance parts .........................................................................................	2	−	6
	2.1.3.	Model Comparison Table..............................................................................................		2	−	7
2.2.	System Overview.....................................................................................................................			2	−	8
	2.2.1.	Front View.................................................................................................................		2	−	8
	2.2.2.	Rear View	..................................................................................................................	2	−	9
	2.2.3.	Paper Path..................................................................................................................		2	− 10
	2.2.4.	System Layout............................................................................................................		2	− 11
		2.2.4.1.	Feeding Part.................................................................................................	2	− 12
		2.2.4.2.	Transfer Roller .............................................................................................	2	− 13
		2.2.4.3.	Drive Unit ...................................................................................................	2	− 13
		2.2.4.4.	Fuser ..........................................................................................................	2	− 14
		2.2.4.5. LSU (Laser Scanner Unit)...............................................................................		2	− 15
		2.2.4.6.	Toner System ...............................................................................................	2	− 16
	2.2.5.	Hardware configuration ................................................................................................		2	− 17
		2.2.5.1.	Main board ..................................................................................................	2	− 18
		2.2.5.2.	OPE board ...................................................................................................	2	− 20
		2.2.5.3.	Wireless LAN board ......................................................................................	2	− 21

i	Copyright© 1995-2013 SAMSUNG. All rights reserved.

Contents

	2.2.5.4.	Joint PBA....................................................................................................	2	− 22
	2.2.5.5.	Electrical Parts Location.................................................................................	2	− 23
	2.2.5.6.	SMPS Board ................................................................................................	2	− 26
	2.2.5.7.	HVPS Board ................................................................................................	2	− 28
2.2.6.	Engine F/W Control Algorithm ......................................................................................		2	− 29
	2.2.6.1.	Feeding .......................................................................................................	2	− 29
	2.2.6.2.	Transfer.......................................................................................................	2	− 29
	2.2.6.3.	Fusing.........................................................................................................	2	− 30
	2.2.6.4.	LSU............................................................................................................	2	− 30
2.2.7.	Software Descriptions ..................................................................................................		2	− 31
	2.2.7.1.	Software system overview ..............................................................................	2	− 31
	2.2.7.2.	Architecture .................................................................................................	2	− 31
	2.2.7.3. Data and Control Flow ...................................................................................		2	− 32
3. Disassembly and Reassembly ..............................................................................................................			3	−	1
3.1. Precautions when replacing parts ................................................................................................			3	−	1
3.1.1.	Precautions when assembling and disassembling ...............................................................		3	−	1
3.1.2.	Precautions when handling PBA.....................................................................................		3	−	1
3.1.3.	Releasing Plastic Latches..............................................................................................		3	−	2
3.2. Screws used in the printer..........................................................................................................			3	−	3
3.3. Replacing the Main SVC parts ...................................................................................................			3	−	4
3.3.1.	Side Cover .................................................................................................................		3	−	4
3.3.2.	Rear Cover.................................................................................................................		3	−	5
3.3.3.	Front Cover................................................................................................................		3	−	6
3.3.4.	Top Cover	..................................................................................................................	3	−	7
3.3.5.	Main Board................................................................................................................		3	−	7
3.3.6.	SMPS........................................................................................................................		3	−	8
3.3.7.	HVPS........................................................................................................................		3	−	8
3.3.8.	Bin-Full Sensor...........................................................................................................		3	−	9
3.3.9.	Main Drive unit...........................................................................................................		3	−	9
3.3.10.	Pick up and Regi Clutch ...............................................................................................		3	− 10
3.3.11.	Pick up and Forward roller ............................................................................................		3	− 10
3.3.12.	Retard Roller..............................................................................................................		3	− 11
3.3.13.	Duplex Unit ...............................................................................................................		3	− 12
3.3.14.	Transfer Roller............................................................................................................		3	− 13
3.3.15.	LSU..........................................................................................................................		3	− 13
3.3.16.	Fuser Unit	..................................................................................................................	3	− 14
3.3.17.	Exit Sensor.................................................................................................................		3	− 14
3.3.18.	Feed and Regi sensor PBA ............................................................................................		3	− 15
3.3.19.	OPE PBA	..................................................................................................................	3	− 16
3.3.20.	Wireless LAN PBA......................................................................................................		3	− 16

Copyright© 1995-2013 SAMSUNG. All rights reserved.

ii

Contents

		3.3.21.	Motor ........................................................................................................................	3	− 17
4.	Troubleshooting................................................................................................................................			4	−	1
	4.1.	Alignment and Adjustments.......................................................................................................		4	−	1
		4.1.1.	Control Panel ..............................................................................................................	4	−	1
		4.1.2.	Understanding the status LED ........................................................................................	4	−	3
		4.1.3.	Jam Removal ..............................................................................................................	4	−	4
		4.1.4.	Periodic defective image ...............................................................................................	4	− 10
		4.1.5.	Useful management tools ..............................................................................................	4	− 11
			4.1.5.1. Using Samsung Easy Printer Manager (Windows and Macintosh only) ....................	4	− 11
			4.1.5.2. Using Samsung Printer Status (Windows only) ...................................................	4	− 13
			4.1.5.3. Using Smart Panel (Linux only) .......................................................................	4	− 14
		4.1.6.	Updating Firmware ......................................................................................................	4	− 15
			4.1.6.1. Update the firmware by using the USB port ........................................................	4	− 15
			4.1.6.2. Update the firmware by using the network ..........................................................	4	− 15
		4.1.7.	EDC program .............................................................................................................	4	− 18
	4.2.	Troubleshooting ......................................................................................................................		4	− 20
		4.2.1.	Procedure of checking the symptoms ...............................................................................	4	− 20
			4.2.1.1. Basic Check List ...........................................................................................	4	− 21
	4.3. Error Code and Troubleshooting .................................................................................................			4	− 22
	4.4.	Image quality problem..............................................................................................................		4	− 37
5.	System Diagrams ..............................................................................................................................			5	−	1
	5.1.	Block Diagram........................................................................................................................		5	−	1
	5.2.	Connection Diagram.................................................................................................................		5	−	2
6.	Schematic Diagrams ..........................................................................................................................			6	−	1
	6.1.	Tool for Troubleshooting...........................................................................................................		6	−	1
	6.2.	Glossary	.................................................................................................................................	6	−	2
	6.3. The Sample ..................................................................................................Pattern for the Test			6	−	8
	6.4.	Selecting ..................................................................................................................a location		6	−	9
	6.5. Model Name .............................................................................................................and Code			6	− 10

iii	Copyright© 1995-2013 SAMSUNG. All rights reserved.

1. Precautions

1. Precautions

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

1.1. Safety warning

1)Only to be serviced by a factory trained service technician.

High voltages and lasers inside this product are dangerous. This product should only be serviced by a factory trained service technician.

2)Use only Samsung replacement parts.

There are no user serviceable parts inside the product. Do not make any unauthorized changes or additions to the product as these could cause the product to malfunctions and create an electric shocks or fire hazards.

3)Laser Safety Statement

The printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR, chapter 1 Subchapter J for Class I(1) laser products, and elsewhere is certified as a Class I laser product conforming to the requirements of IEC 60825-1. 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.

•Wavelength: 800 nm

•Beam divergence

-Paraller: 11 degrees

-Perpendicular: 35 degrees

•Maximum power of energy output: 12 mW

WARNING

Never operate or service the product with the protective cover removed from Laser/Scanner assembly. The reflected beam, although invisible, can damage your eyes.

When using this product, these basic safety precautions should always be followed to reduce risk of fire, electric shock, and personal injury.

Copyright© 1995-2013 SAMSUNG. All rights reserved.

1-1

1. Precautions

1.2. Caution for safety

1.2.1. Toxic material

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

1)Please keep imaging unit and toner cartridge away from children. The toner powder contained in the imaging unit 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 fire.

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

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

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

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

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

6)Use caution when inserting or removing the power cord. When removing the power cord, grip it firmly and pull. The power cord must be inserted completely, otherwise a poor contact could cause overheating leading to a fire.

1-2	Copyright© 1995-2013 SAMSUNG. All rights reserved.

1. Precautions

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

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

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

10)Avoid damp or dusty areas, install the product in a clean well ventilated location. Do not position the machine near a humidifier or in front of an air conditioner. Moisture and dust built up inside the machine can lead to overheating and cause a fire or cause parts to rust.

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

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

13)	When replacing the SMPS board, please wait 5 minutes after unplugging the power cord, then replace it. You

can get a shock by the electric discharge.

Copyright© 1995-2013 SAMSUNG. All rights reserved.

1-3

1. 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 product.

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

2)The product 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 product which if spilled could get into the machine and cause damage or a shock or fire hazard.

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

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

6)Ensure that the machine is installed and used in proper area to meet the temperature and humidity specifications.

•If the machine is stored at below zero Celsius for a long time, do not use the machine instantly after movement. It can malfunction. Take care of the machine storage. If the machine is stored at below zero Celsius for a long time, keep the machine at room temperature and install it.

1.2.4. Assembly and Disassembly precautions

1)Replace parts carefully and 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 product or replacing any parts.

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

3)Disconnect interface cables and power cables.

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

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

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

7)Handling of the 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 fluorescent or incandescent room lighting. Exposure for as little as 5 minutes can damage the surface of the photoconductive properties and will result in print quality degradation. Take extra care when servicing the product. Remove the OPC Drum and store it in a black bag or other lightproof container. Take care when working with the Covers (especially the top cover) open as light is admitted to the OPC area and can damage the OPC Drum.

•Take care not to scratch the green surface of OPC Drum Unit. If the green surface of the Drum Cartridge is scratched or touched the print quality will be compromised.

1-4	Copyright© 1995-2013 SAMSUNG. All rights reserved.

1. Precautions

1.2.5. Disregarding this warning may cause bodily injury

1)Be careful with the high temperature part.

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

2)Do not put fingers 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, use safe lifting and handling techniques.

This printer is heavy. Use the lifting handles located on each side of the machine. Back injury could be caused if you do not lift carefully.

4)Ensure the printer is installed safely.

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.

Copyright© 1995-2013 SAMSUNG. All rights reserved.

1-5

1. Precautions

1.3. Caution for Data Loss

To prevent loss of customers data the SVC engineer provides end-user with relevant information in advance.

1-6	Copyright© 1995-2013 SAMSUNG. All rights reserved.

1. Precautions

1.4. ESD precautions

Certain semiconductor devices can be easily damaged by static electricity. Such components are commonly called “Electrostatically Sensitive (ES) Devices” or ESDs. Examples of typical ESDs are: integrated circuits, some field effect transistors, and semiconductor “chip” components. The techniques outlined below should be followed to help reduce the incidence of component damage caused by static electricity.

CAUTION

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

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

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

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

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

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

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

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

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

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

Copyright© 1995-2013 SAMSUNG. All rights reserved.

1-7

2. Product Specifications and Description

2. Product Specifications and Description

2.1. Product Specifications

2.1.1. Product Overview

1)Printing Speed

•Xpress M262x Series : Up to 26 ppm in A4 (27 ppm in Letter)

•Xpress M282x Series : Up to 28 ppm in A4 (29 ppm in Letter)

2)Printing Resolution

•Up to 1,200 x 1,200 dpi effective output

3)Processor

•600MHz

4)Printer Language Emulation

•SPL / PCL5e / PCL6

5)Memory

•DDR3 128 MB

6)Interface

•Hi-Speed USB 2.0, Ethernet 10/100 Base TX Interface

7)Control Panel

•No LCD, 4 keys and 2 LEDs

8)Toner cartridge

•Initial

-Xpress M2620, M2820 Series : 1,500 pages

-Xpress M2625, M2825 Series : 1,200 pages

•Standard / High Yield

Xpress M2620, M2820 Series : 3,000 pages Xpress M2x25 Series : 1,200 pages / 3,000 pages

2-1	Copyright© 1995-2013 SAMSUNG. All rights reserved.

2. Product Specifications and Description

2.1.2. Specifications

•Product Specifications are subject to change without notice.

2.1.2.1. General Print Engine

	Item		Specification
		Simplex	Xpress M262x Series : Up to 26 ppm in A4 (27 ppm in Letter)
			Xpress M282x Series : Up to 28 ppm in A4 (29 ppm in Letter)
Engine Speed
		Duplex (1)	Xpress M262x Series : Up to 13 ppm in A4 (14 ppm in Letter)
			Xpress M282x Series : Up to 14 ppm in A4 (15 ppm in Letter)
Warmup time		From Sleep	Less than 14 seconds
FPOT		From Ready	Less than 8.5 seconds
		From Sleep	Less than 14 seconds
	Resolution		Up to 1,200 x 1,200 dpi effective output

(1) ‘D’ Model only.

2.1.2.2. Controller and Software

	Item		Specification
	Processor	CPU	600 MHz (Cortex-A5)
		Image Processor	ReCP (Rendering Engine for Clean Page)
	Memory		DDR3 128 MB
			Not support
			Xpress M262x, M262xD : SPL
	Printer Language		Xpress M262xND, M282x ND/DW Series : SPL / PCL5e /
			PCL6
		Window	XP / 2003 Server / Vista /2008 server/ 7 / 2008 Server R2 / 8
			RedHat Enterprise Linux WS 4, 5, 6 (32/64 bit)
			Fedora 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 (32/64 bit)
			OpenSuSE 10.2, 10.3, 11.0, 11.1, 11.2, 11.3, 11.4 (32/64 bit)
		Linux	Mandriva 2007, 2008, 2009, 2009.1, 2010 (32/64 bit)
			Ubuntu 6.06, 6.10, 7.04, 7.10, 8.04, 8.10, 9.04, 9.10, 10.04,
	Client OS Support		10.10, 11.04 (32/64 bit)
			SuSE Linux Enterprise Desktop 10, 11 (32/64 bit)
			Debian 4.0, 5.0, 6.0 (32/64 bit)
		Mac OS	X10.5~10.8
			Sun Solaris 9,10,11 (x86, SPARC)
		UNIX (1)	HP-UX 11.0, 11i v1, 11i v2, 11i v3 (PA-RISC, Itanium
			IBM AIX 5.1, 5.2, 5.3, 5.4, 6.1, .7.1 (PowerPC)
	Fonts		PCL : 95 Scalable Fonts (Include OCR-A / OCR-B) / 1 Bitmap

Copyright© 1995-2013 SAMSUNG. All rights reserved.

2-2

2. Product Specifications and Description

	Item		Specification
		USB	High speed USB 2.0
	Interface	USB Host (Direct USB)	Not support
		Wired LAN (2)	Ethernet 10/100 Base Tx
		Wireless LAN (3)	Wireless 802.11 b/g/n
			TCP/IP
			TCP / IPv4/v6 / HTTP / SNMPv1/v2c/v3 / SMTP / DNS /
			WINS / DDNS / DHCP / BOOTP / AutoIP / Standard TCP/IP
	Network Protocol (2)		Printing / LPR / WSD Print / IPP / UPnP(SSDP) / Bonjour /
			WSD Discovery / SLP / SetIP / Google Cloud Print / WSD
			Scan
			Others
			– IPPs / IPSec

(1)Xpress M282x Model only

(2)Network support model only

– Xpress M2620ND, M282xND/DW Series

(3) Wireless support model only - Xpress M282xDW Series

2-3	Copyright© 1995-2013 SAMSUNG. All rights reserved.

			2. Product Specifications and Description
	2.1.2.3. Paper Handling
		Item	Specification
	Input Capacity	Standard	250–sheet Cassette Tray / 1–sheet Manual Feeder
	Output Capacity		Face Down : 150–sheet
			Face up : 1–sheet
	Printing Size	Max.	216 x 356 mm (8.5" x 14")*
		Min.	76 x 127mm (3" x 5")*
		Capacity	250–sheet
		Media Size	A4, A5, A6, Letter, Legal, Executive, Folio, Oficio, ISO B5, JIS B5
	Standard	Media Types	Plain, Thin, Thick, Cardstock, Recycled, Archive, Bond
	Cassette Tray
		Media Weight	60 ~ 163 g/ (16 ~ 43 lb)*
		Sensing	H/W Install Detect : No Paper Empty : Yes Paper Type Detect : No Paper Size
			Detect : No
		Capacity	1–sheet
			A4, A5, A6, Letter, Legal, Executive, Folio, Oficio, ISO B5, JIS B5, Envelope
		Media Size	(Monarch/No-10/DL/C5/C6), Custom 76 x 127 mm ~ 216 x 356 mm (3" x 5"
	Manual Feeder		~ 8.5" x 14")
		Media Types	Plain, Thin, Thick, Thicker, Cardstock, Transparency, Pre-Printed, Recycled,
			Archive, Bond, Label, Envelope, Thick Envelope, Cotton, Colored
		Media Weight	60 ~ 220 g/ (16 ~ 58 lb)*
		Sensing	Yes

2.1.2.4. Consumables

[Separated Toner System]

Model	Item			Average Yield (1)		Part Code
			Initial Toner	1,200	Pages	-
Xpress M2625 series	Toner Cartridge		Standard Toner	1,200 Pages		MLT-D116S
Xpress M2825 series			High Yield Toner	3,000 Pages		MLT-D116L
	Imaging Unit			9,000 Pages		MLT-R116
[Integrated Toner System]
Model	Item			Average Yield (1)		Part Code
Xpress M2620 series			Initial Toner	1,500 Pages		-
	Laser Toner Cartridge		Standard Toner		-	-
Xpress M2820 series
			High Yield Toner	3,000 Pages		MLT-D115L

(1) Declared yield value in accordance with ISO/IEC 19752.

Copyright© 1995-2013 SAMSUNG. All rights reserved.

2-4

2. Product Specifications and Description

2.1.2.5. Reliability and Service

	Item				Specification
	Max. Monthly Duty				12,000 pages
	MPBF				30,000 pages
	MTTR				Less than 30 min
2.1.2.6. Environment
Item					Specification
	Printing Simplex				Less than 50 dBA
Acoustic Noise Level	Standby				Less than 26 dBA
	Sleep				Less than 26 dBA
	Ready				Less than 45 W
	Normal operation				Less than 400 W
Power Consumption	Max / Peak				Less than 450 W
	Sleep				Less than 0.9 W
	Power Off				Less than 0.2 W
	TEC				Less than 1.1 kWh/week
	Telecommunication		TBR-21, KC, Part68, ICCS03, NTC
	Safety			cUL, CB, KC, TUV-GS, PSB
Certification	EMC/EMI	FCC Part 15 Class B, ICES003, CE(EN), KCC
	Document				No
	Security				No
	Others				No
Dimension	SET	368 x 334.5 x 202 mm (14.5" x 13.2" x 8.0")*
(W x D x H)	SET Packing	452 x 418 x 330 mm (17.8" x 16.5" x 13")*
	Net (SET without				6.3 kg (13.8 lbs)
	Consumables)
	Net (SET with				7.2 kg (16.0 lbs)
	Consumables)
Weight	Gross (SET with				9.1 kg (20.1 lbs)
	Packing)
	Consumable (without	Toner Catridge			1.2K : 0.50 kg (1.10 lbs)
					3.0K : 0.54 kg (1.19 lbs)
	Packing)
		Imaging Unit			0.38 kg (0.84 lbs)

2-5	Copyright© 1995-2013 SAMSUNG. All rights reserved.

2. Product Specifications and Description

2.1.2.7. Options

Item	Specification
Memory	N/A
Second Cassette	N/A
Hard Disk	N/A

2.1.2.8. Maintenance parts

Item	Image	Part Code			Life
		•	220V
Fuser			•	JC91–01034B	100,000 pages
		•	110V
			•	JC91–01034A
Transfer Roller		JC66-01218A			100,000 pages
Pick-Up/ Feed/		JC93–00405A			50,000 pages
Forward Roller Assy
Retard Roller		JC90–01107B			50,000 pages

Copyright© 1995-2013 SAMSUNG. All rights reserved.

2-6

2. Product Specifications and Description

2.1.3. Model Comparison Table

		Brother HL-2250DN (HL-2270DW)	Samsung SL-M2825(0)ND (M2825DW)	HP HP P1606dn
	Product Image
	Printing Speed	26 / 27ppm Black (A4 / Letter)	28 / 29ppm Black (A4 / Letter)	25 / 26ppm Black (A4 / Letter)
	First Time to Print	Less than 8.5 sec.	Less than 8.5 sec.	As fast as 7 sec (from Auto-Off)
	Memory (MB)	32MB Memory	128MB Memory	32MB
	CPU (Processor) Speed	200 MHz	600 MHz	400 MHz
	Power Consumption	0.9W (Sleep WLAN On: 2.8W) / 65W / 495W	1.2W / 45W / 400W	0.4W(Manual-off), 1.6W (Auto-off) / 2.2W /
	(Sleep/Ready/Printing)			440W
	Noise	31dB/53dB	26dB/50dB	INA/53dB
	(Ready/Printing)
	Product Size	368 x 360 x 183 mm (14.5" x 14.2" x 7.2")	368 x 334.5 x 201 mm	378 x 284 x 246 mm (15.24" x 11.18" x 9.69")
	(WxDxH)			(Max. 387 x 420 x 255 mm)
	Product Weight	6.8Kg (15.4 lbs.)	7.17Kg (15.8 lbs.) : All-in-One	7.0Kg (15.4 lbs.)
	(kg, lbs)		7.39Kg (16.3 lbs.) : Separate
	Initial Consumables Lifetime	Toner Cartridge : 700 pages	Toner Cartridge : 1000 pages
		Drum Unit : 12,000 pages	Drum Unit : 9,000 pages
	Separated Type Toner	1.2K / 2.6K	1.0K / 2.5K	2.1K
	(Standard/High)
	United Type Toner		1.5K / 3.0K
	(Standard/High)

2-7	Copyright© 1995-2013 SAMSUNG. All rights reserved.

2. Product Specifications and Description

2.2. System Overview

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

2.2.1. Front View

NOTE

•This illustration may differ from your machine depending on its model.

•Some features and optional goods may not be available depending on model or country.

1	Output Tray
2	Control Panel
3	Front Cover
4	Paper Level Indicator
5	Tray 1
6	Manual Feeder

(1) Xpress M2620, M2820 Series

7	Paper Width Guides
8	Paper Width Guides on a Manual Feeder
9	Laser Toner Cartridge (1)
10	Toner Cartridge (2)
11	Imaging Unit (2)

(2) Xpress M2625, M2825 Series

Copyright© 1995-2013 SAMSUNG. All rights reserved.

2-8

2. Product Specifications and Description

2.2.2. Rear View

NOTE

•This illustration may differ from your machine depending on its model.

•Some features and optional goods may not be available depending on model or country.

1	Network Port (1)
2	USB Port
3	Power Switch (2)
4	Power Receptacle
5	Rear Cover

(1)Network and wireless models only

(2)Power Switch support models only.

2-9	Copyright© 1995-2013 SAMSUNG. All rights reserved.

2. Product Specifications and Description

2.2.3. Paper Path

The following diagram displays the path the paper follows during the printing process.

Copyright© 1995-2013 SAMSUNG. All rights reserved.

2-10

2. Product Specifications and Description

2.2.4. System Layout

This model consists of the Engine parts, Hardware and Firmware. The engine parts consists of the mechanical parts comprising Frame, Duplex, Toner cartridge, Drive unit, Transfer roller, Fuser, Cassette. The Hardware part consists of the main control board, power board, operation panel, PC Interface.

1	LSU		9	Cassette
2	Toner Cartridge		10	Transfer Roller
3	Regi. Roller		11	Duplex Unit (1)
4	MP		12	Fuser Unit
5	Feed Roller		13	Exit Roller1
6	Forward Roller		14	Exit Roller2
7	Retard Roller		15	Toner Cartridge Pressure Unit (2)
8	Pick-up Roller

(1)Duplex Model only (Xpress M2x2x D / ND / DW)

(2)Toner Cartridge Saperate Model only (Xpress M2x25 / M2x26)

2-11	Copyright© 1995-2013 SAMSUNG. All rights reserved.

2. Product Specifications and Description

2.2.4.1. Feeding Part

It consists of a cassette, an MP tray for supplying different types of media (envelope, label, special paper) and parts related to paper transferring.

1) Cassette

The cassette stores the paper (Capacity: 250 sheets (80g/ paper standard). Both the side guide and the rear guide can be adjusted for various types of papers from A6 to legal size paper. It has a paper existence sensing function, paper arranging function, various size papers accepting function.

2) Pick-Up / Forward / Retard roller

When pickup takes place, the pickup roller moves down to come into contact with the surface of the paper. The pickup roller moves down when the pickup clutch is activated. The forward roller and the retard roller serve to make sure that a single sheet of paper is moved to the paper path, and the paper is moved as far as the registration roller by the work of the feed roller.

(A)Pick-up Roller

(B)Retard Roller

(C)Forward Roller

Copyright© 1995-2013 SAMSUNG. All rights reserved.

2-12

2. Product Specifications and Description

3) Registration roller

It is used as an anti skew device, and to setup proper registration timing with that of the toned image on the drum. It also is used for jam detection to ensure paper has left the paper tray.

4) Manual Feeder

The multi-purpose tray can hold special sizes and types of print material, such as postcards, note cards, and envelopes.

2.2.4.2. Transfer Roller

The transfer roller delivers the toner of the OPC drum to the paper.

•Life Span : Print over 100,000 sheets (in 15~30 )

2.2.4.3. Drive Unit

In this model, the driving device consists of BLDC motor, Regi./Pick up clutches, various gears for OPC, Fuser, Pickup, Feed, Regi, Exit.

2-13	Copyright© 1995-2013 SAMSUNG. All rights reserved.

2. Product Specifications and Description

2.2.4.4. Fuser

This unit consists of Heat Roller, a Thermostat, and Thermistors, etc. It fuses the toner that was transferred by the transfer roller onto the paper, by applying pressure and high temperature to complete fusing process.

1)Thermostat

When a heat lamp is overheated, a Thermostat cuts off the main power to prevent overheating.

•Thermostat Type : NonContact type Thermostat

•Control Temperature : 195 ± 5

2)Thermistor

It is a temperature detecting sensor.

•Temperature Resistance : 7 (180 )

3)Heat roller

The heat roller transfers the heat from the lamp to apply a heat on the paper.

The surface of a heat roller is coated with Teflon, so toner does not stick to the surface.

4)Pressure roller

A pressure roller mounted under a heat roller is made of a silicon resin, and the surface also is coated with Teflon. When a paper passes between a heat roller and a pressure roller, toner adheres to the surface of a paper and is permanently fused.

5)Halogen Lamp

•Voltage : 120 V (115 ± 5 %) / 220 V : 230 ± 5 %

•Capacity : 850 Watt ± 42.5 W

6)Items for safety

Protecting device for overheating

•1st protection device: Hardware cuts off when overheated

•2nd protection device: Software cuts off when overheated

•3rd protection device: Thermostat cuts off main power.

Safety device

•A fuser power is cut off when a front cover is opened

•Maintain a temperature of fuser cover’s surface under 80 for user, and attach a caution label at where customer can see easily when customer open a rear cover.

Copyright© 1995-2013 SAMSUNG. All rights reserved.

2-14

2. Product Specifications and Description

2.2.4.5. LSU (Laser Scanner Unit)

It is the core part of the LBP which switches from the video data received to the controller to the electrostatic latent image on the OPC drum by controlling laser beam, exposing OPC drum, and turning principle of polygon mirror. The OPC drum is turned with the paper feeding speed. The HSYNC signal is created when the laser beam from LSU reaches the end of the polygon mirror, and the signal is sent to the controller. The controller detects the HSYNC signal to adjust the vertical line of the image on paper. In other words, after the HSYNC signal is detected, the image data is sent to the LSU to adjust the left margin on paper. The one side of the polygon mirror is one line for scanning.

2-15	Copyright© 1995-2013 SAMSUNG. All rights reserved.

2. Product Specifications and Description

2.2.4.6. Toner System

By using the electronic photo process, it creates a visual image. In the toner cartridge, the OPC unit and the developing unit are in a body. The OPC unit has OPC drum and charging roller, and the developing unit has toner, supply roller, developing roller, and blade.

•Developing Method : Non magnetic 1 element contacting method

•Toner : Non magnetic 1 element shatter type toner

•OPC Cleaning : Collect the toner by using cleaning blade

•Handling of wasted toner : Collect the wasted toner in the cleaning frame by using cleaning blade

•Classifying device for toner cartridge: ID is classified by CRUM.

[Integrated Toner System]

Image	Layout

[Separated Toner System]

Image	Layout

Copyright© 1995-2013 SAMSUNG. All rights reserved.

2-16

2. Product Specifications and Description

2.2.5. Hardware configuration

The ML-295x series Electrical Circuit System consists of the following:

•Main board (System board)

•OPE board

•SMPS board

•HVPS board

Diagram of the ML-295x series Electrical Circuit

ML-295x series has a system board of integrated engine controller and video controller.

The engine controller controls all modules required to print, that is, LSU, HVPS, SMPS, FAN, Fuser, etc.

It communicates with the video control block inside CPU for printing. And it has the interface for all video sync signal to print out the video data.

The video controller receives print data from the host through network or USB Port. It takes this information and generates printable video bitmap data.

The main board adopts the 600 MHz CPU, on board DDR3 memory (128MB) to perform printing jobs successfully.

2-17	Copyright© 1995-2013 SAMSUNG. All rights reserved.

2. Product Specifications and Description

2.2.5.1. Main board

A1500 chip is adopted as the main processor. Its process speed is 600 MHz. It is integrated engine controller and video controller.

DDR3 128MB is adopted for high speed data processing. Boot has 8MB SPI.

USB is the embedded type and wired network supports 100M full duplex.

[Main board diagram]

Copyright© 1995-2013 SAMSUNG. All rights reserved.

2-18

2. Product Specifications and Description

[Main board image]

•Connection

1	LSU Video connector
2	LSU Motor connector
3	HVPS interface connector
4	OPE connector
5	SMPS interface connector
6	Main BLDC Motor connector
7	Paper Exit sensor connector

8	Fuser thermistor interface connector
9	Wired network connector
10	USB device connector
11	Wireless module interface connector (Wireless
	model only)
12	Crum interface connector (Depend on Model)

• Information

- Part Code :

Model	Part Code
Xpress M262x	JC92-02616B
Xpress M262xND	JC92-02615B
Xpress M282xND	JC92-02615D
Xpress M282xDW	JC92-02615F

- PBA name : PBA-MAIN

2-19	Copyright© 1995-2013 SAMSUNG. All rights reserved.