North America : service.samsungportal.com
Latin America : latin.samsungportal.com
CIS : cis.samsungportal.com
Europe : europe.samsungportal.com
China : china.samsungportal.com
Asia : asia.samsungportal.com
Mideast & Africa : mea.samsungportal.com
13. Frame Sub Unit 1 (MEA UNIT-PICK UP ROLL) •••••••••••••••••29
14. Frame Sub Unit 2 (MEA UNIT-FRAME EXIT) •••••••••••••••••••31
15. Frame Sub Unit 3 (MEA UNIT-GUIDE PICK UP) •••••••••••••••33
Precautions
1. Precautions
In order to prevent accidents and to prevent damage to the equipment please read the precautions listed
below 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 to
reduce risk of re, electric shock, and injury to persons.
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Samsung Electronics
Precautions
Service Manual
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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 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 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.
Precautions
Service Manual
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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.
Precautions
Service Manual
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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 to
cool 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
- The equipment weighs approximately 11 Kg (including consumables), therefore pay 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.
- 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.
Precautions
Service Manual
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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 one’s foot from a carpeted oor, can generate static
electricity sufcient to damage an ESD.
Product spec and feature
2. Product spec and feature
2.1 Product Specications
2.1.1 Product Overview
Item Descriptions
Basic Model CLP-310/315
Series ModelCLP-310N : Network Model
Size (mm)388 x 314 x 237350x315x250407 x 453 x 370370 x 245 x 241
Weight11 kg13 kg18.4 kg5.5 kg
Noise45 dBA49 dBA47 dBA-
Toner (Black/
Color)
1.5 K/1K2K/1K2.5 K/2K2K
18 ppm
150 sheets MP, 10
Manual
Product spec and feature
Service Manual
2-11
Samsung Electronics
ITB
OPC
DEVE Y
DEVE M
DEVE C
DEVE K
LSU
Cassette
Fuser
Stacking Area
T2 Roller
Regi.
Roller
T1 Roller
Pick up
Roller
Waste
Tank
ITB
OPC
DEVE Y
DEVE M
DEVE C
DEVE K
LSU
Cassette
Fuser
Stacking Area
T2 Roller
Regi.
Roller
T1 Roller
Pick up
Roller
Waste
Tank
2.2 System Overview
This chapter describes the functions and operating principles of the main components.
2.2.1 System Structure
The Printer function consists of the Engine part and the Main Controller part, and the Engine part consists
of the Mechanical part comprising a Frame, Feeding, Developing, Driving, Transferring, Fusing, and Cabinet
and the Electrical part comprising a SMPS, a HVPS, a LSU, and some facilities in the Main Controller to
control the Engine part for printing.
2.2.1.1 Main Parts of System
Product spec and feature
Service Manual
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Samsung Electronics
①
Cassette
• Feeding Method : Cassette Type
• Feeding Standard : Center Loading
• Feeding Capacity : Cassette 150 Sheets(75g/㎡, 20lb Pa per Standard)
• No Manual Feeder
• Paper Detecting Sensor : Photo Sensor (Empty, Registration, Exit)
• Paper Size Sensor : None
②
LSU(Laser Scan Unit)
The LSU unit is controlled by video controller. It scans the video data received from video controller with
laser beam by using the rotation principle of the polygon mirror to create the latent image on the OPC
drum. It is the core part of LBP.
The OPC drum rotates as the same speed as the paper feeding speed. It creates the /HSYNC signal and
sends it to the engine when the laser beam of the LSU reaches the end of the polygon mirror, and the
engine detects the /HSYNC signal to arrange the vertical line of the image on the paper. After detecting
the /HSYNC signal, the image data is sent to the LSU to arrange the its margin on the paper.
• Consisted of LD(Laser Diode) and Polygon Motor Control.
Error Phenomenon
Polygon Motor Error The Rotation of Polygon Motor can not reach stable
Hsync Error Though the rotation of Polygon Motor reach stable, the signal of Hsync is
not occurred
Product spec and feature
Service Manual
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Samsung Electronics
③
2nd Transfer Ass’y
• The life span: Print over 100,000 sheets (in 15~30 )
• Specication: Similar to CLP-300 Series
④
Fuser Ass’y
This unit consists of Heat Roller, a Thermostat and a Thermistor. It melts and fuses the toner, transferred
by the transfer roller onto the paper, by applying pressure and high temperature to complete printing job.
* Heat Lamp : Kunckle Type
* Fusing system : 3-Roll Fusing type
When a heat lamp is overheated, a Thermostat cuts off the main power to prevent over-heating.
- Non-Cotact type Thermostat
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 Teon, so toner does not stick to the surface.
Pressure roller
A pressure roller mounted under a heat roller is made of a silicon resin, and the surface also is coated
with Teon. When a paper passes between a heat roller and a pressure roller, toner adheres to the surface
of a paper permanently.
Product spec and feature
Service Manual
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Samsung Electronics
⑤
& ⑥ ITB(Intermediate Transfer Belt) & 1st Transfer Roller
• The life span: Print over 100,000 Images
• The ITB unit includes 1st Transfer Roller
⑦ & ⑧
OPC(Organic Photo-Conductor) & Developer
• The life span: Print over 50,000 Images (Both)
• Imagine Unit consists of 4 kinds of Developer , OPC, and Deve. Main Frame
⑨
Toner Kits
• The life span: Color -> 1000 images (Std. ISO 19798 Print-Out)
Black -> 1500 images (Std. ISO 19798 Print-Out)
⑩
Driver Ass’y
• It is a power delivery unit by gearing
• By driving the motor, it supplies the power to the feeding unit, the fusing unit, and the distributing unit.
• The Main Motor is similar to CLP-300 Series Main Motor.
⑪
Wireless PBA (Only CLP-315W)
• CLP-315W model has a Wireless PBA to use wireless network.
Product spec and feature
Service Manual
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Samsung Electronics
2.2.1.2 EP Process
Charger
Developer
Laser Scanning Unit
OPC
ITB Unit
Eraser
Blade
Blade
Media Path
P2: Image
on Media
P1: Image
on OPC
~
Charger
Developer
Laser Scanning Unit
OPC
ITB Unit
Eraser
Blade
Blade
Media Path
P2: Image
on Media
P1: Image
on OPC
~~
- Structure of EP Process
Product spec and feature
Service Manual
2-16
Samsung Electronics
①
Charging
• Conductive Roller charging
• Applied voltage : -1.1kV
• Charge acceptance : -520V
• OPC coating thickness : 21um
• OPC diameter : Φ60mm
• Eraser system
1. Organic Photoconductor is charged to uniform voltage by conductive roll charging method
2. No ozone is produced because corona is not used
3. Charger roll is cleaned with cleaning roll
4. Toner remained on OPC after T1 process is cleaned by cleaning blade and retrieved into waste toner box
by auger and belt driving mechanism
②
Exposing
• One polygon motor ( 6 facet )
• Single beam LD (1ea)
• LD wavelength : 785nm
• Polygon motor rpm : 29685
• LSU energy : 0.25uJ/cm^2
• OPC exposed potential : -50V
1. Exposing is implemented by laser striking on to OPC with uniform potential
2. Laser beam is modulated according to image to be printed that is from PC
3. Latent Image is formed on OPC, which is developed with toner
③
Developing
• Non-magnetic, mono component
• Non-contact development
• Developing bias : DC + AC
• AC peak to peak : 1.5 ~ 2.0kV
• Roller diameter : Φ10mm
• Process speed ratio : 1.2 (OPC=1.0)
• Color order : Y -> M -> C -> K
1. Only latent image formed by exposing process is developed with toner
2. AC + DC Voltage is being used to develop toner into latent image on OPC because non-contact
developing method is adopted
3. Y, M, C, and K Images are sequentially developed onto OPC and transferred onto Intermediate Transfer
Belt (hereafter ITB) to form a color image on ITB
4. Toner Bottles are used to supply toner into developer compartment
5. Toner level is being sensed to control toner supply from toner bottle to developer
Product spec and feature
Service Manual
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Samsung Electronics
④
Transfer 1
• Multi-pass transfer
• Indirect transfer
• Transfer voltage : 0.5 ~ 2.0kV (controllable)
• Roller diameter : Φ14mm
• Transfer unit life : 100K images
1. Developed Image on OPC is transferred onto ITB by T1 Process
2. T1 Voltage is positive which attract toner to ITB
3. 4 times of T1 process is required to make a color image on ITB, which means multi-pass process
4. ITB has a hole as a ducial mark for timing. Engine control for color image is synchronous with it, ITB
Home Sensing Signal
⑤
Transfer 2
• Indirect transfer
• Transfer voltage : 1 ~ 4.0kV (controllable)
• Roller diameter : Φ18.6mm
• Transfer unit life : 100 K images
1. Color image formed on ITB is transferred onto media by T2 process
2. T2 voltage is also positive to get color image moved onto media
3. Toner remained on ITB after T2 process is cleaning by ITB cleaning blade and collected and
4. Transported and retrieved into waste toner box by auger and belt driving system
5. T2 Roll is engaged when color image is being transferred onto media. Otherwise it is disengaged. Clutch
is used for driving T2 Roll engagement and disengagement
⑥
Fusing
• 3 Roll system
-> short warm-up time (35sec)
• Post Pressure Roll
1. Color Image on media is melted down and xed into media by fusing process