Samsung Xpress M202x, Xpress M2020, Xpress M2020W, Xpress M2022, Xpress M2022W Service Manual. Parts List

Name: Samsung Xpress M202x
Brand: Samsung
SKU: 2594231
Rating: 4.7 (6 reviews)

4.7 (6)

Mono Laser Printer

Xpress M202x series M2020 / M2020W / M2022 /

M2022W

(Ver1.0)

SERVICEMANUAL

Mono Laser Printer

Contents

1. Precautions

2. Product Specifications and Description

3. Disassembly and Reassembly

4. Alignment and Troubleshooting

5. System Diagram

6. Reference Information

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

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.	ESD precautions......................................................................................................................			1	−	6
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	−	1
		2.1.2.1.	General Print Engine......................................................................................	2	−	1
		2.1.2.2.	Controller and Software..................................................................................	2	−	2
		2.1.2.3.	Paper Handling.............................................................................................	2	−	2
		2.1.2.4.	Supplies ......................................................................................................	2	−	3
		2.1.2.5.	Maintenance Part ..........................................................................................	2	−	3
		2.1.2.6.	Reliability and Service ...................................................................................	2	−	4
		2.1.2.7.	Environment ................................................................................................	2	−	4
		2.1.2.8.	Accessories..................................................................................................	2	−	4
	2.1.3.	Model Comparison Table..............................................................................................		2	−	6
2.2.	System Overview.....................................................................................................................			2	−	7
	2.2.1.	Front View.................................................................................................................		2	−	7
	2.2.2.	Rear View	..................................................................................................................	2	−	8
	2.2.3.	Paper Path..................................................................................................................		2	−	9
	2.2.4.	System Layout............................................................................................................		2	− 10
		2.2.4.1.	Feeding Part.................................................................................................	2	− 11
		2.2.4.2.	Transfer Roller .............................................................................................	2	− 12
		2.2.4.3.	Drive Unit ...................................................................................................	2	− 12
		2.2.4.4.	Fuser Unit....................................................................................................	2	− 13
		2.2.4.5. LSU (Laser Scanner Unit)...............................................................................		2	− 15
		2.2.4.6.	Toner Cartridge.............................................................................................	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 (M202xW only)................................................................		2	− 21
		2.2.5.4.	SMPS/HVPS board .......................................................................................	2	− 22

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

Contents

		2.2.5.5.	Electrical Parts Location.................................................................................	2	− 24
	2.2.6.	Engine F/W Contol Algorithm .......................................................................................		2	− 25
		2.2.6.1.	Feeding .......................................................................................................	2	− 25
		2.2.6.2.	Transfer.......................................................................................................	2	− 25
		2.2.6.3.	Fusing.........................................................................................................	2	− 26
		2.2.6.4.	LSU............................................................................................................	2	− 26
	2.2.7.	Software Descriptions ..................................................................................................		2	− 27
		2.2.7.1.	Software system overview ..............................................................................	2	− 27
		2.2.7.2.	Architecture .................................................................................................	2	− 27
		2.2.7.3. Data and Control Flow ...................................................................................		2	− 28
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.	Preautions 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.	Cover........................................................................................................................		3	−	4
	3.3.2.	Main board.................................................................................................................		3	−	6
	3.3.3.	Fuser Unit	..................................................................................................................	3	−	6
	3.3.4.	SMPS/HVPS board......................................................................................................		3	−	7
	3.3.5.	Drive Unit..................................................................................................................		3	−	7
	3.3.6.	LSU..........................................................................................................................		3	−	8
	3.3.7.	Feed Sensor PBA ........................................................................................................		3	−	9
	3.3.8.	Pick up roller..............................................................................................................		3	−	9
	3.3.9.	Motor........................................................................................................................		3	− 10
	3.3.10.	Transfer Roller............................................................................................................		3	− 11
4.	Alignment and 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	−	7
	4.1.5.	Useful management tools..............................................................................................		4	−	8
		4.1.5.1. Using Samsung Easy Printer Manager (Windows and Macintosh only)....................		4	−	8
		4.1.5.2. Using Samsung Printer Status (Windows only) ...................................................		4	− 10
		4.1.5.3. Using SyncThru Web Service (SWS) ................................................................		4	− 11
	4.1.6.	Updating Firmware......................................................................................................		4	− 13
		4.1.6.1. Update the firmware by using the USB port........................................................		4	− 13
		4.1.6.2. Update the firmware by using the network (M202xW only)...................................		4	− 14

Contents

	4.2.	Troubleshooting ......................................................................................................................		4	− 16
		4.2.1. Procedure of checking the symptoms...............................................................................		4	− 16
			4.2.1.1. Basic Check List ...........................................................................................	4	− 17
		4.2.2. Error Code and Troubleshooting.....................................................................................		4	− 18
		4.2.3.	Image quality problem ..................................................................................................	4	− 25
		4.2.4.	Other errors ................................................................................................................	4	− 31
5.	System Diagram................................................................................................................................			5	−	1
	5.1.	Block Diagram........................................................................................................................		5	−	1
	5.2.	Connection Diagram.................................................................................................................		5	−	2
6.	Reference Information........................................................................................................................			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

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

1. Precautions

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.

4) Lithium battery not replaceable by user

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.

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.

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

1. Precautions

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.

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.

1-5

1. Precautions

1.3. ESD precautions

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

CAUTION

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

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

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

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

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

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

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

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

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

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

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

2. Product Specifications and Description

2.1. Product Specifications

2.1.1. Product Overview

1)Speed

•Up to 20 ppm in A4 (21 ppm in Letter)

2)Processor

•600 MHz (A1500 CPU / Europe only / M2022, M2022W)

•600 MHz (A1000 CPU / M2020, M2020W)

3)Printer Languages

•SPL (Samsung Printer Language)

4)Memory

•M2022W/ M2022 : 128 MB

•M2020W : 64 MB

•M2020 : 8 MB

5)Interface

•Hi-Speed USB 2.0

•Network Interface 802.11b/g/n wireless LAN (Only M202xW)

•Wireless model supports NFC printing.

6)Toner Cartridges

•Initial : 500 pages

•Sales : 1,000 pages

2.1.2. Specifications

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

2.1.2.1. General Print Engine

Item		Specification
Engine Speed	Simplex	Up to 20 ppm in A4 (21 ppm in Letter)

Warm-up time	From Sleep	Less than 30 seconds

FPOT	From Ready	Less than 8.5 seconds

	From Sleep	Less than 19 seconds

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

2-1

2. Product Specifications and Description

2.1.2.2. Controller and Software

Item		Specification
Processor		600 MHz

		• M2022W / M2022 : 128 MB
Memory	Std.	•	M2020W : 64 MB
Memory		•	M2020 : 8 MB
		•	M2020 : 8 MB

	Optional	N/A

Printer Languages		SPL (Samsung Printer Language)

Fonts		Windows Fonts

	Default Driver	SPL (Samsung Printer Language)

	Install	SPL (Samsung Printer Language)

		XP(32/64bits)/ Vista(32/64bits)/ 2003 Server(32/64bits)/ 2008
		Server(32/64bits)/ 7(32/64bits)/ 2008 Server R2(64bits)/ 8(32/64bits)

		•	Various Linux OS
			• Red Hat Enterprise Linux 5, 6
			• Fedora 11, 12, 13, 14, 15, 16, 17, 18
Driver	Supporting OS		• openSUSE 11.0, 11.1, 11.2, 11.3, 11.4, 12.1, 12.2, 12.3
Driver			• Ubuntu 10.04, 10.10, 11.04, 11.10, 12.04, 12.10
			• Ubuntu 10.04, 10.10, 11.04, 11.10, 12.04, 12.10
			• SUSE Linux Enterprise Desktop 10, 11
			•	Debian 5.0, 6.0
			•	Mint 13, 14

		Mac OS X 10.5~10.8

	WHQL	Vista(32/64bits)/ 7(32/64bits)/ 8(32/64bits)

	Compatibility	XP(32/64bits)/ Vista(32/64bits)/ 2003 Server(32/64bits)/ 2008
	Compatibility	Server(32/64bits)/ 7(32/64bits)/ 2008 Server R2(64bits)/ 8(32/64bits)


	Parallel	N/A

Interface	USB	Hi-Speed USB 2.0

	Wired Network	N/A
	Wired Network	N/A

	Wireless Network	Network Interface 802.11b/g/n wireless LAN

	Samsung AnyWeb	Windows and Macintosh OS only

	Samsung Easy Printer	Windows and Macintosh OS only
Application	Manager	Windows and Macintosh OS only
Application	Manager
	Samsung Printer Status	Windows OS only

	Smart Panel	Linux OS only

2.1.2.3. Paper Handling

Item		Specification

Standard Capacity		150-sheet Multi Purpose Tray @ 80 g/m²

Max. Capacity		150-sheet @ 80 g/m²

Printing	Max. Size	216 x 356 mm (8.5" x 14.02")

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

2. Product Specifications and Description

Item		Specification

	Min. Size	76 x 127 mm (3.0" x 5.0")

Standard Cassette Tray		N/A

	Capacity	• Plain Paper : 150 sheets @ 80 g/m²
	Capacity	• Envelop : 10 sheet @ 80 g/m²
		• Envelop : 10 sheet @ 80 g/m²

	Media sizes	A4, A5, Letter, Legal, Executive, Folio, Oficio, ISO B5, JIS B5,
Multi-purpose Tray	Media sizes	Envelope(Monarch, No.10, DL, C5), Custom
		Envelope(Monarch, No.10, DL, C5), Custom

(Bin type)	Media type	Plain ,Thin, Cotton, Recycled, Archive, Colored, Pre-Printed, Label, Bond,
	Media type	Thick, Envelopes, Cardstock
		Thick, Envelopes, Cardstock

	Media weight	16~43 lb (60 to 163 g/m²)

	Sensing	N/A

Optional Cassette Tray		N/A

Output Stacking	Capacity	• Face-Down : 100 sheets @ 80 g/m²

	Output Full sensing	N/A
	Output Full sensing	N/A

	Supporting	Yes (manual)

Duplex	Media sizes	A4, A5, Letter, Legal, Executive, Folio, Oficio, ISO B5, JIS B5, Custom

	Media types	Plain, Thin, Recycled, Archive,
	Media types	Plain, Thin, Recycled, Archive,

	Media weight	16~24 lb (60 to 90 g/m²)

Printable Area	Non-Printable Area	• 3 mm (0.12") from edge (Top, Bottom, Left, Right)

2.1.2.4. Supplies

Item		Specification
Toner Cartridge	Part name	MLT-D111S

	Average yield		• Average Cartridge Yield 1,500 standard pages
			(Ships with 500 pages Starter Toner Cartridge)

			NOTE
			Declared yield value in accordance with ISO/IEC 19752.

NOTE

Depending on the options, percentage of image area, and job mode used, the toner cartridge’s lifespan may differ.

2.1.2.5. Maintenance Part

Item	Part Code		Life
Fuser Unit	•	JC91–01077A (220V)	30,000 Pages
	•	JC91–01076A (110V)

Transfer Roller	JC66–02709A		30,000 Pages

Pick-Up Roller (Assy)	JC93–00525A		30,000 Pages

Feed Roller	JC66–02598B		30,000 Pages

2-3

2. Product Specifications and Description

2.1.2.6. Reliability and Service

Items	Specification
Printing Volume (SET AMPV)	75 sheets/month

MPBF	10,000 sheets

MTTR	30 min.

SET Life Cycle	30,000 sheets or 5 years (whichever comes first)

2.1.2.7. Environment

Item		Specification
Dimension (W x D x H)	Machine	332 x 215 x 178 mm (13.07 x 8.46 x 7.01 inches)

Weight	Machine with toner cartridge	• M202x : 3.97 kg (8.75 lbs)
Weight	Machine with toner cartridge	• M202xW : 4.0 Kg (8.82 lbs)
		• M202xW : 4.0 Kg (8.82 lbs)

Noise Level*	Ready mode	Less than 26 dB (A)

	Print mode	Less than 50 dB (A)
	Print mode	Less than 50 dB (A)

Temperature	Operation	10 ~ 32 °C (50 ~ 90 °F)

Humidity	Operation	10 ~ 80% RH

Power rating**	110 volt models	AC 110 - 127 V

	220 volt models	AC 220 - 240 V
	220 volt models	AC 220 - 240 V

	Average operating mode	Less than 310 W

	Ready mode	Less than 30 W
Power Consumption
Power Consumption	Power save mode	• M202x : Less than 0.9 W
	Power save mode	• M202xW : Less than 1.2 W
		• M202xW : Less than 1.2 W

	Power off mode	Less than 0.45 W (0.1 W***)

*Sound Pressure Level, ISO 7779. Configuration tested: basic machine installation, A4 paper, simplex printing.

**See the rating label on the machine for the correct voltage (V), frequency (hertz) and type of current (A) for your machine.

***For the machine that has a power switch.

2.1.2.8. Accessories

Image	Item	Remark
	Power cord

2-4	Copyright© 1995-2013 SAMSUNG. All rights reserved.

2. Product Specifications and Description

Image	Item	Remark
	Quick installation guide
	Quick installation guide

Software CD	The software CD contains the printer drivers and software
	applications.

Misc. accessories	Miscellaneous accessories included with your machine may
	vary by country of purchase and specific model.

2-5

2. Product Specifications and Description

2.1.3. Model Comparison Table

	Samsung M2022W	Samsung ML-216x	HP P1505n
Image

Speed	20 ppm (A4)	20 ppm (A4)	18 ppm (A4)

Processor	300 MHz	300 MHz	266 MHz

Print Language	SPL	SPL	PCL5e

Input	150 sheets Bin	150 sheets Bin	150 sheets Bin

Interface	High Speed USB 2.0	High Speed USB 2.0	High Speed USB 2.0
Interface	802.11b/g/n wireless LAN	High Speed USB 2.0	High Speed USB 2.0
	802.11b/g/n wireless LAN

Size (mm)	332 x 215 x 178 mm	332 x 215 x 178 mm	349 x 238 x 196 mm

Toner	Standard 1,000 pages	Standard 1,500 pages	Standard 1,600 pages

2-6	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.

1Output Tray

2Control Panel

3Tray

4Output support

5Top cover

6	Toner cartridge
7	Paper width guide

2-7

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.

1USB Port

2Power receptacle

2-8	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.

2-9

2. Product Specifications and Description

2.2.4. System Layout

This model consists of the engine parts, hardware parts, firmware. The engine parts consists of the mechanical parts comprising Frame, Toner Cartridge, Drive Unit, Transfer roller, Pick up unit, Fuser, Bin-tray. The hardware parts consists of the main board, SMPS/HVPS board, OPE board, PC interface.

1	LSU	6	Plate-Bottom
2	Toner Cartridge	7	Fuser Unit
3	Transfer roller	8	Exit roller1

4Feed roller

5Pick-Up roller

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2. Product Specifications and Description

2.2.4.1. Feeding Part

It is consists of a bin-type tray, pick-up roller, friction pad and parts related to paper feed initialization.

1) Input Tray

This model has a bin-type tray.

It takes a center loading method and applies ‘friction pad separating method.’

The side guide can be adjusted for various types of papers from A6 to legal size paper. It has a paper detecting function, paper arranging function.

2) Pick-up roller

It has functions such as a paper pickup function, driving control function, paper feeding function, and removing electronic static function. Pick up roller is driven by clutch.

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2. Product Specifications and Description

2.2.4.2. Transfer Roller

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

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

2.2.4.3. Drive Unit

In M202x series, the driving device consists of OPC, Pickup, Feed, Fuser, GearTrain connected with Mounting member. A step motor for driving is assembled to the left frame.

•Driving Frequency: Step Motor 810 PPS (1013 rpm)

•It is a power delivery unit by gearing: Step Motor → Pick-up/ Feeder/ OPC/ Fuser/ Exit

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2. Product Specifications and Description

2.2.4.4. Fuser Unit

This unit consists of Heat Roller, a Thermostat, and Thermistor, etc. It fuses the toner that was transferred by the transfer roller onto the paper, by applying heat and pressure 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°C ± 5°C

2)Thermistor

It is a temperature detecting sensor.

•Temperature Resistance : 7 kΩ(180°C)

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 : 750 Watt ± 30 W

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2. Product Specifications and Description

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°C for user, and attach a caution label at where customer can see easily when customer open a rear cover.

2-14	Copyright© 1995-2013 SAMSUNG. All rights reserved.

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.

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2. Product Specifications and Description

2.2.4.6. Toner Cartridge

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 single component non-contacting method

•Toner : Non magnetic single component pulverized type toner

•The life span of toner (ISO 19752 pattern / A4 standard)

-Initial toner : 500 pages

-Sales toner : 1,000 pages

•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

2-16	Copyright© 1995-2013 SAMSUNG. All rights reserved.

Samsung Xpress M202x, Xpress M2020, Xpress M2020W, Xpress M2022, Xpress M2022W Service Manual. Parts List

2. Product Specifications and Description

2.2.5. Hardware configuration

M202x series Electrical Circuit System consists of the following:

•Main board (System board)

•OPE board

•HVPS/SMPS board

•Wireless board (Only M202xW)

Diagram of the M202x series Electrical Circuit

M202x 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, Fuser, Motor 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 is adopted 600 MHz A1500 CPU (only Europe) or A1000 CPU that is integrated with engine controller, video controller, SDRAM, Flash ROM. It uses SDRAM and Flash ROM inside the ASIC chip.

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2. Product Specifications and Description

2.2.5.1. Main board

A1000 chip or A1500 chip(only Europe) is applied to the main processor. Its process speed is 600 MHz. It is integrated engine controller, video controller, SDRAM, Flash ROM.

USB is the embedded type.

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2. Product Specifications and Description

[Main board image]

•Connection

1	OPE connector
2	LSU connector
3	Wireless module interface connector
4	SMPS/HVPS interface connector
5	Pick up connector
6	Sensor connector
7	USB device connector
8	Fuser thermistor interface connector
9	CRUM connector
10	Engine motor connector

•Information

-Part Code

▪M2022 : JC92–02685A

▪M2022W : JC92–02687A

-Part Name : PBA-MAIN

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2. Product Specifications and Description

2.2.5.2. OPE board

The OPE board is not a controller. It receives the KEY input from ASIC. LED on/off also is controlled by ASIC.

[OPE board image]

•Information

-Part Code : JC92–02690A

-PBA name : PBA-OPE

•Connection

1	Main board interface connector

2-20	Copyright© 1995-2013 SAMSUNG. All rights reserved.

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