Samsung CLP-600 Service Manual

Manual

SERVICE

Color Laser Printer

CLP-600 Series

CLP-600/CLP-600N

Basic Model :CLP-600

Samsung Color Laser Printer The keynote of Product

- Speed: A4, 20/20ppm(Color/Mono)
1200dpi x 1200dpi

- Paper Path: FISO(Front-Inm Side-Out),
Single Pass(Tandem)

- Emulation: SPL-C(GDI)

- System Controller: V320

- Processor: PMC RM5231A 250MHz

- Memory: Standard SDRAM capacity is 32MB

- Cassette: 250Sheet(Settable Type/A4, Ltr)

- SCF: 500Sheet Second Cassette Feeder
(option)

- Toner Cartridge: 4K/4K(Color/Mono)

- Fuser Type: 1 E-coil Roller(heat roller)

- I/O: USB 2.0

- Machine Life: 150,000images/400, 000pages

CLP-600

ELECTRONICS

Samsung Electronics Co.,Ltd. Oct. 2005
Printed in Korea.
VERSION NO. : 1.00 CODE : JC-0150A

* This service manual is a property of Samsung Electronics Co., Ltd.

Any unauthorized use of Manual can be punished under applicable
international and/or domestic law.

* This service manual is also provided on the web, the ITSELF

system Samsung Electronics Co., Ltd.

http://itself.sec.samsung.co.kr

Contents

1. Precautions

1.1 Safety Warning 1-1

1.2 Caution for safety

1-2

1.3 ESD Precautions

1-5

1.4 Super Capacitor or Lithium Battery Precautions

1-5

2. Product Specification

2.1 Product Overview 2-1

2.2 Specifications

2-2

2.3 Model Comparison Table

2-6

3. System Overview

3.1 System Structure 3-1

3.2 H/W Structure and Descriptions

3-13

3.3 Driver Board

3-15

3.4 Deve CRUM

3-17

3.5 Belt CRUM

3-18

3.6 Deve CRUM Interface board

3-19

3.7 Belt CRUM Interface board

3-20

3.8 Power Supply

3-21

3.9 HVPS

3-23

Continued

4. S/W Structure and Descriptions

4.1 Architecture 4-1

4.2 Language Monitor

4-1

4.3 Status Monitor

4-1

4.4 Network Interface

4-2

4.5 Printer Driver <-> Status Monitor

4-2

4.6 System F/W Flow

4-3

4.7 Alarm Shortage

4-4

4.8 Error status

4-4

4.9 CRUM Overview

4-5

4.10 FW Upgrade

4-5

5. Disassembly and Reassembly

5.1 Precautions When Replacing Parts 5-2

5.2 Parts for Maintenance and Repair

5-3

5.3 Information Related in Disassembly and Assembly

5-5

5.4 Disassembly Procedure

5-13

6. Alignment and Adjustments

6.1 Paper path and Paper jam 6-1

6.2 Jam Removal

6-4

6.3 Sample Pattern

6-14

6.4 Checking the Remaining Toner and Others

6-15

6.5 Understanding the Control Panel

6-16

6.6 Periodic Defective Image

6-20

6.7 How to use EDC (Engine Diagnostic Control) Mode

6-21

Continued

Continued

7. Troubleshooting

7.1 Procedure of Checking the Symptoms 7-1

7.2 Solution of Image Problem

7-5

7.3 Paper Feeding Problems and Troubleshooting

7-10

7.4 Symptoms of Bad Operation and Troubleshooting

7-13

7.5 Treatment of Error Message

7-17

8. Exploded Views & Parts List

8.1 Exploded Views and Parts List 8-1

9. Block diagram

9.1 21ppm Block Diagram 9-1

9.2 GID H/W Block Diagram

9-2

9.3 N/C & Wireless Block Diagram

9-3

10. Connection Diagram

10.1 CLP-600/600N Connection Diagram 10-1

10.2 Power Distribution Diagram

10-2

10.3 Main

SMPS 10-3

10.4 Main(Driver) HVPS 28 pin

10-4

10.5 Main(Driver) HVPS 8 pin

10-5

10.6 Main

Driver DF11 28 pin 10-6

10.7 Main

System thermistor 2 pin 10-7

10.8 Main

SET CTD, CR, CRUM sensor 10-8

10.9 Main

Temp/Hum sensor 4 pin 10-9

10.10 Main

LSU 24 pin 10-10

Precautions

Samsung Electronics

Service Manual

1-1

1

1

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 qualified service engineers.

High voltages and lasers inside this product are dangerous. This printer should only be serviced by a suitably
trained and qualified 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 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 1(1) laser products, and elsewhere, it is certified as a Class I laser product
conforming to the requirements of IEC 825. Class I laser products are not considered to be hazardous. 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

reflected beam, although invisible, can damage your eyes. When using this product, these basic safety
pre-cautions should always be followed to reduce risk of fire, electric shock, and injury to persons.

CAUTION - INVISIBLE LASER RADIATION

WHEN THIS COVER OPEN.
DO NOT OPEN THIS COVER.

VORSICHT - UNSICHTBARE LASERSTRAHLUNG,

WENN ABDECKUNG GE FFNET .
NICHT DEM STRAHL AUSSETZEN.

ATTENTION - RAYONNEMENT LASER INVISIBLE EN CAS

D OUVERTURE. EXPOSITION DANGEREUSE
AU FAISCEAU.

ATTENZIONE - RADIAZIONE LASER INVISIBILE IN CASO DI

APERTURA. EVITARE L ESPOSIZIONE AL
FASCIO.

PRECAUCION - RADIACION LASER IVISIBLE CUANDO SE ABRE.

EVITAR EXPONERSE AL RAYO.

ADVARSEL. - USYNLIG LASERSTR LNING VED BNING, NR

SIKKERHEDSBRYDERE ER UDE AF FUNKTION.
UNDG UDSAETTELSE FOR STRLNING.

ADVARSEL. - USYNLIG LASERSTR LNING N R DEKSEL

PNES. STIRR IKKE INN I STR LEN.

UNNG EKSPONERING FOR STR LEN.

VARNING - OSYNLIG LASERSTR LNING N R DENNA DEL

R PPNAD OCH SP RREN R URKOPPLAD.

BETRAKTA EJ STR LEN. STR LEN R FARLIG.

VARO! - AVATTAESSA JA SUOJALUKITUS OHITETTAESSA

OLET ALTTIINA NKYM TT M LLE LASER­S TEILYLLE L KATSO S TEESEEN.

Samsung Electronics

Service Manual

Precautions

1-2

1.2 Caution for safety

1.2.1 Toxic material

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

(1) If the LCD control panel is damaged it is possible for the liquid inside to leak. This liquid is toxic. Contact with the 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 toner cartridges away from children. The toner powder contained in the 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 printer and potentially cause a fire or electric

shock.

(2) Use only the power cable supplied with the printer. 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 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 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 printer remove the power plug from the wall socket.

(6) Use caution when inserting or removing the power connector. The power connector must be inserted com-

pletely otherwise a poor contact could cause overheating possibly leading to a fire. When removing the power
connector grip it firmly and pull.

(7) Take care of the power cable. Do not allow it to become twisted, bent sharply round corners or otherwise

damaged. Do not place objects on top of the power cable. If the power cable is damaged it could overheat and
cause a fire or exposed cables could cause an electric shock. Replace a damaged power cable immediately,
do not reuse or repair the damaged cable. Some chemicals can attack the coating on the power cable,
weakening the cover or exposing cables causing fire and shock risks.

(8) Ensure that the power sockets and plugs are not cracked or broken in any way. Any such defects should 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 humidifier. Damp and dust build up inside the machine can lead to overheating and cause a fire.

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

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

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

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

Precautions

Samsung Electronics

Service Manual

1-3

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 fingers,

hair or clothing in any of these rotating devices.

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

(5) Do not place candles, burning cigarettes, etc. on the printer, these could cause a fire.

1.2.4 Assembly / Disassembly Precautions

Replace parts carefully, always use Samsung parts. Take care to note the exact location of parts and 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 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-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 mins can damage the surface’s 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.

Samsung Electronics

Service Manual

Precautions

1-4

1.2.5 Disregarding this warning may cause bodily injury

(1) Be careful with the high temperature part.

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

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

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

(3) When you move the printer.

This printer weighs 29kg including toner cartridge and cassette. Use safe lifting and handling techniques. Back
injury could be caused if you do not lift carefully.

(4) Ensure the printer is installed safely.

The printer weighs 29Kg, ensure the printer is installed on a level surface, capable of supporting its weight.
Failure to do so could cause the printer to tip or fall possibly causing personal injury or damaging the printer.

(5) Do not install the printer on a sloping or unstable surface. After installation, double check that the printer is stable.

Precautions

Samsung Electronics

Service Manual

1-5

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 avail ­able 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. Exercise caution when replacing a super capacitor or Lithium battery. There could be a danger of explosion and
subsequent operator injury and/or equipment damage if incorrectly installed.

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

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

4. Dispose of used batteries according to the manufacture’s instructions.

1.4 Super Capacitor or Lithium Battery Precautions

Product Specifications

Samsung Electronics

Service Manual

2-1

2

2

Item Descriptions Remark

Basic Model CLP-600
Series Model CLP-600, CLP-600N, CLP-650, CLP-650N
Maket of Sales

Main Target : Office Small Workgroup(2~10)

- Shared by Local PC or Network attaching(60:40)
Sub Target : Office Personnel for Mktg/Fin/Engr/Exec.

Enterpreneurial business(1~5)

Main Specification 1. Paper Handling

- Input : 250CST, 50MP, No Duplex

- Output : 250(Face/Down)

- Etc : MP(Postcard~Legal)
CST(A5~Letter)

2. Engine

- Speed : 20ppm/A4, 21ppm/Letter

- Resol : 1200dpi Addr.

- Duty : 35,000pages/mon

- Life : 400,000pages

3. Consum ables

- CRU : C/M/Y/K : 4K(5%) /Initial 2K

Paper Transfer Unit : 35

K

- FRU : Fuser : 50K

Other Roll : 50K

4. Controller

- SPL model(CLP-600) : SPL-C, Std. 64MB

- PDL model(CLP-650) : PCL6/PS3, Std. 128MB(Max. 640MB)

5. Control/UI

- LCD : SPLC-LED(7), 3Keys

PDL-LCD, 6Keys

- CMM : ICC, sRGB

Pamtone(PDL)

6. Other

- Inferface : USB 2.0

USB 2.0 + P1284(PDL)

- Util : MS Family, Mac/Linux, Smart Monitor, Local&NW RDS

2. Product Specifications

2.1 Product Overview

Samsung Electronics

Service Manual

Product Specifications

2-2

2.2 Specifications

Specifications are correct at the time of printing. Product specifications are subject to change without notice.
See below for product specifications.

2.2.1 General Specifications

Items Descriptions

Print Method Non-impact Electro-photography
Developing system Non-Magnetic, Mono-Component Developing System
*Print Speed Mono Up to 20ppm in A4, Up to 20ppm in Letter size

Color Up to 20ppm in A4, Up to 20ppm in Letter size
Resolution 1200dpi X 1200dpi
Source of Light Laser diode (LSU : Laser Scanning Unit)
Warm-Up Time More than 60 sec
First Print Time Mono 20 seconds (Ready to 1st page out)

Color 20 seconds (Ready to 1st page out)
Feed Method Cassette , MPT(Multi Purpose Tray), SCT(Second Cassette Tray)
Media Size 76 X 128mm (3 x 5”) to 216 X 356mm (8.5 X 14”)
Media Thickness Cassette : 16 ~24 lb , MPT : 16 ~ 43 lb
Dimension (W X D X H) 465(W)mm X 465(D)mm X 445(H)mm
Weight Net 24 Kg

Gross 21 Kg
**Acoustic Noise Stand by More than 44 dBA

Printing More than 52 dBA (Color)
Power save mode Support : Yes(RCP Mode)

Default : 30min

Setting : 5min/10min/30min/45min/60min/120min
Toner save mode Disable
Machine Life Mono : More than 400,000 pages, Color : More than 100,000 pages

* Print speed will be affected by Operating System used, computing performance, application software, connecting

method, media type, media size and job complexity.
* Cardstock/Envelope : Half Speed
** Sound Pressure Level, ISO 7779

Product Specifications

Samsung Electronics

Service Manual

2-3

2.2.2 Controller Specification

2.2.3 Electrical Specification

Items Descriptions

Processor (CPU) RM5231A + V320USC(SPL-C)
Memory FLASH ROM (PROGRAM) : 8MB flash

Standard SDRAM Capacity is 32MB
Option DIMM module : SDRAM 144PIN SODIMM TYPE 128~256MB for one slots

NVRAM : 4K BIT Serial Inter face(12C)
Emulation GDI(SPL-Color)
Operating System Win 95/98/ME/NT4.0/2000/XP, Various Linux OS including Red Hat, Caldera, Debian,

Mandrake, Slackware, SuSE and Turbo Linux
Interface Parallel : IEEE 1284 Bidirectional (Korea, Russia, Asia only)

- Modes supported : Compatible, Nibble, Byte, ECP

USB (without HUB mode)

- USB 2.0 compliant -12/480 Mbps 1 port

Network Interface

- 10/100 Base TX
10/100 Base TX + 802.11b Wireless LAN

Interface switching Automatic
Interface time-out 5min (Max.)
Font Windows font, PS english font, PCL english font
Color Management ICC ICM V3.4

Items Descriptions Remarks

Input Voltage Nominal input voltage 200-240 VAC / 100~127VAC

Input voltage range 180-264 VAC/ 90~132VAC
Input frequency 50/60 MHz
Frequency tolerance +3Hz

Power Consumption Printing : 55Wh(AVG)

Power Save : Less than 35Wh

2.2.4 Environmental Range

Items Operating Storage

Temperature 15~32.5 ˚C(50-90 ˚F) -20~40 ˚C (-4~104 ˚F)
Humidity 20~80%RH 10~80%RH

Samsung Electronics

Service Manual

Product Specifications

2-4

2.2.5 Consumable & Maintenance Items

Consumables

No. of CRUs 5 (C/M/Y/K toner, Transfer)
Toner Black 4,000 A4/Letter pages, at ISO-19752 5% Coverage(Set initial : 2K)

Color 4,000 A4/Letter pages, at ISO-19752 5% Coverage C/M/Y

each(Set initial : 2K)
Key Unique, Electronic key(CRUM)
Life detect None, toner remaining volume would be traced via software
Replace method 3 steps for install/replacing

Tranfer Yield 50,000 pages
(Paper Transfer Belt) Key CRUM

Sensor None
Replace method 3 steps for install/replacing

No. of FRUs 5 (ITB+OPC, Dev Unit, Fuser, T2 roller, Pick-up roller)
Fuser Yield 50,000 pages

Key Detect new fuser, cut fusible resistance
Life detect None
Replace method 2 steps for install/replacing Dime screw

Pick-up Roller Yield 50,000 pages

Key None
Life detect None
Replace method 3 steps for install/replacing

Options

CLP-600 CLP-600N

Memory N/A
Second Cassette Y
Network Option Standard
Wireless Network N/A Dealer option
Hard Disk N/A
Duplex Unit N/A

Product Specifications

Samsung Electronics

Service Manual

2-5

2.2.6 Paper handling Specifications

Paper Paper size 1st Cassette 2nd Cassette MP tray Duplex

A4 210 X 297 mm O O O O
Letter 216 X 279 (8.5 X 11") O O O O
Folio (Legal13") 216 X 330 (8.5 X 13") O O
Legal (Legal14") 216 X 356 (8.5 X14") O O
Executive 184 X 267 (7.25 X10.5") O
Statement 140 X 216(5.5 x8.5") O
ISO B5 176 X 250 O
JIS B5 182 X257 O
A5 148.5 X 210 O
A6 105 X148.5 O
Com-10 Envelope 105 X 241 (4.15 X 9.5") O
Monarch Envelope 98 X191 (3.87 X 7.5") O
DL Envelope 110 X 220(4.33 X 8.66") O
C5 Envelope 162 X 229 (6.38 X 9.01") O
C6 Envelope 114 X 162 (4.49 X 6.38") O
Transparency (OHP) A4 or Letter O
Label paper A4 or Letter O

2.2.6.2 Input Capacity

2.2.6.1 input Paper Size

Items Descriptions Remarks

Cassette(FCT) 250 sheets
MPF Paper 100 sheets

Transparencies 30 sheets
Envelopes 10 sheets
Labels 10 sheets

Option Cassette(SCT) 500 sheets

2.2.6.3 Output Capacity

Items Descriptions Remarks

Face Down 250 sheets

O : Supported

Samsung Electronics

Service Manual

Product Specifications

2-6

2.3 Model Comparison Table

Model Name CLP-600 CLP-600N CLP-650 CLP-650N

Engine Speed Simplex B&W : Up to 20 ppm in A4 (21 ppm in Letter)

Duplex N/A(Manual) N/A(Manual)
Warm-up time < 40 sec
FPOT (B&W) From Ready < 20 sec

From Sleeping < 60 sec

From Coldboot < 60 sec
FPOT (Color) From Ready < 20 sec

From Idle < 60 sec

From Coldboot < 60 sec
Resolution Optical 600 x 600 dpi

Maximum Draft: 600*600 dpi Draft: 600*600 dpi
MPU MIPS 250 MHz MIPS 7065-600MHz
Memory Std. 32 MB <- 128MB <-

Max. 32 MB <- 256MB <­Memory Expansion N/A N/A 128MB 128MB
Printer LanguagesSPL-C (Samsung Printer SPL-C (Samsung Printer SPL-C, PS3, PCL6C

Language Color) Language Color)
Fonts N/A N/A 45 scalable and 1 bitmap PCL and 136 PS
F/W Upgradability Field upgradable via firmware downloading to FLASH memory
Driver Supporting OS Windows 98/Me/NT4/2000/XP/2003 Windows 98/Me/NT4/2000/XP/2003

Various Linux(Red Hat 8.0~9.0, Mandrake 9.0~10.2, Various Linux(Red Hat 8.0~9.0, Mandrake 9.0~10.2,
SuSE 8.2~9.2 and Fedora Core 1~3) SuSE 8.2~9.2 and Fedora Core 1~3)

Mac OS X 10.3 and above Mac OS X 8.6 and above
Default Driver SPL-C (Samsung Printer Language Color) SPL-C (Samsung Printer Language Color) for Win
WHQL Windows 2000/XP/2003 Windows 2000/XP/2003
Language SPL-C: Win(English, German, French, Spanish, Italian,

Localization Dutch, Danish, Swedish, Norweigian, Finnish, E.Portuguese,

Hungarian, Polish, Czech, Turkish, Russian, Korean,

S.Chinese, T.Chinese)

Application Smart Panel Y Y

Installer Auto install by detecting OS Auto install by detecting OS
Network Management

N/A SyncThru Web service N/A SyncThru Web service
Set IP Y Y Y Y

Parallel Interface N/A N/A IEEE1284 IEEE1284
USB Interface USB 2.0 USB 2.0 USB 2.0 USB 2.0
Network N/A

RJ45, Standard 10/100BaseTX

Opt.

RJ45, Standard 10/100BaseTX
Wireless N/A 802.11 a/b/gDealer option Opt. 802.11 a/b/gDealer option
Network Interface(Protocol) N/A TCP/IP, SNMP, HTTP 1.1, Opt. TCP/IP, Ethertalk, SNMP,

SPX/IPX HTTP 1.1, SPX/IPX

Network OS N/A Opt. Microsoft Windows

98/ME/2000/XP/2003Microsoft

Windows NT 4.x, 5.x,

6.xMac8.6 and aboveVarious

Linux OS including Red Hat,

Caldera, Debian, Mandrake,

Slackware, SuSE and Turbo

LinuxNovell 4.x,5.x,6.x

LCD & Button 2 buttons LCD and 7 buttons
PostScript N/A Standard
Network N/A Standard Opt. Standard
Wireless Network N/A Dealer option N/A Dealer option

SPL-C: Win(English, German, French, Spanish, Italian,
Dutch, Danish, Swedish, Norweigian, Finnish, E.Portuguese,
Greek, Hungarian, Polish, Czech, Turkish, Russian, Korean,
S.Chinese, T.Chinese)PS3: PPDPCL6C : English & Korean

Microsoft Windows
98/ME/2000/XP/2003Micros
oft Windows NT 4.x, 5.x,

6.xMac 10.3 and
aboveVarious Linux OS
including Red Hat, Caldera,
Debian, Mandrake,
Slackware, SuSE and Turbo
LinuxNovell 4.x,5.x,6.x

System Overview

Samsung Electronics

Service Manual

3-1

3

3

3. System Overview

This chapter describes the functions and operating principles of the main components.

3.1 System Structure

3.1.1 Main Parts of System

MPF Path

MPF Path

DEV. - Black

DEV. - Yellow
DEV. - Magenta

DEV. - Cyan

Exit

Fan

PTB

MPF

Feeder

Waste Tank

Fuser

Color Regi

Sensor

Paper

Charge Roll

LSU:4Beam

SMPS

Cassette Path

Cassette

Fan

Exit

Fan

PTB

MPF

Feeder

Waste Tank

Fuser

Color Regi

Sensor

Paper

Charge Roll

LSU:4Beam

SMPS

Cassette Path

Cassette

SCF Path

Fan

Samsung Electronics

Service Manual

System Overview

3-2

3.1.2 Sensor

Color Regi

(2EA)

Exit

Thermostat

Thermistor

CTD

Toner Full

CRUM

Paper Regi

MPF paper

empty

FCF paper empty

Temperature

Humidity

CRUM

(4EA)

System Overview

Samsung Electronics

Service Manual

3-3

1) OPC Unit

Images are created on the OPC unit using an electro-photographic process. The unit consists of:­* OPC Drum

used to collect waste toner remaining on the OPC drum,

* Charge Roller Assy

2) PTB Unit (Paper Transfer Belf)

PTB stands for Image Transfer Belt. An image developed on the OPC Drum is transferred first to
the PTB. This is called the T1 Transfer Paper Charge Roller.
Images are built up in layers on the PTB.
First the Yellow (Y) colour image is created on the OPC and transferred to the PTB
Next the Magenta (M) colour image is created on the OPC and transferred to the PTB
Followed by the Cyan (C) and Black (K) images.

3) Transfer Roller

Once the complete, full colour, image, has been built up on the ITB the Transfer Roller is used to
transfer the image onto paper. This is called the T2 Transfer (Secondary Image Transfer)

4) FCT (First Cassette Tray)

It stores and automatically feeds print paper.
Pick-up Roller picks up paper, controls drive, feeds paper, removes static electricity, and so on.

> Spec.

* Paper arrange way : Side Registration
* Paper Direction : FISO (Front-in, Side-Out)
* Cassette Type : A4, Ltr
* Paper Discharge : Separation Claw
* Capacity : 250 Sheets (Standard paper 75mg/m? 20lb)
* Paper Size : A4, Letter
* Paper Weight (average) : 60~90g/m2(16~24lbs)
* Paper Type : General Printing Paper
* Additional Function : Paper Empty Sensor

5) SCF (Second Cassette Feeder)

This additionally stores and automatically feeds printing paper. Its function is the same as the FCT
(First Cassette Tray)

> Spec.

* Paper arrangement : Side Registration
* Paper Direction : FISO (Front-in, Side-Out)
* Cassette Type : A4, Ltr
* Paper Discharge : Separation Claw
* Capacity : 500 Sheets (Standard paper 75mg/m220lb)
* Paper Size : A4, Letter
* Paper Weight (average) : 60~90g/m2(16~24lbs)
* Paper Type : General Printing Paper
* Additional Function : Paper Empty Sensor

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6) MPF (Multi Purpose Feeder)

The Multi-Purpose Feeder not only feeds general printing paper but is also used for many other
kinds of paper such as those paper sizes not supported by the cassette, envelopes, OHP, etc.

> Spec.

* Capacity : Cut Sheet : 100 Sheets (Standard paper 75mg/m220lb)
* OHP : 300 Sheets
* Envelope & Label & Card Stock : 10 Sheets
* Paper Arrangement : Side Registration
* Power : Main Motor (Stepper Motor)
* Driving Management : Solenoid
* Paper Discharge : Friction Pad Method
* Paper Size : Legal, Folio, A4, Letter, Executive, JIS B5, A5, A6
* Paper Weight (Average) : 75~163g/m

2

* Paper Type : General, Label, Post Card, Transparency, Envelope, Card Stock (Tracing

Paper is not served)

* Additional Function : Paper Empty Sensor

7) Feeder

* Paper Arrangement : Side Registration.
* Power : Main Motor (Stepper Motor)
* Paper Management : Shutter Method

8) Duplex Unit

The Duplex Unit is not used.

9) Exit Unit

The Exit Unit guides paper that is just about to leave the print engine. Printed-paper is discharged
by the Exit Roller and Kicker into the Output Tray.

> Spec.

* Capacity : 250 sheets (Standard A4, 75g/m2)
* Paper Direction : Face Down
* Exit Drive Roller : It is driven by Main Motor (BLDC), and it rotates clockwise for normal

feed and antic-clockwise when reverse feeding for duplex printing.
* Sensor : There is photo interrupt sensing (GPIS73)
* Jam Detect : Exit Cover Open.

10) Toner Cartridge

There are four toner cartridges, each containing a different colour ink : C (Cyan), M (Magenta), Y
(Yellow) , and K (Black).
Each one of these toner cartridge is independent and can be changed independently.

* Toner Empty : Dot Counting Method.
* Color Key : CRUM

11) Fuser Unit

This unit consists of 1 E-COIL ROLLER (HEAT ROLLER), 1 Thermostats 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.

* Ready Temp : 165
* Printing Temp : 180 (over shoot : 200 )

System Overview

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12) LSU

This is a core part of LBP. It forms a latent image on the surface of OPC drum using a static
charge.
* Resolution: Real 600 dpi
* Motor : Brushless DC motor PWM control.

13) Main Drive Unit

This motor drives, by way of a gearbox, the OPC unit, ITB unit, feeder unit, fuser unit, exit unit and
duplex unit.

> Spec.

* Power : 20W Max (24V)
* Drives : OPC unit, ITB unit, Fuser, Feeder, Duplex unit, Exit unit

14) DEVE Drive Unit

This motor drives, by way of a gearbox, the toner cartridges and ITB cleaning cam.

> Spec.

* Power : 20W Max (24V)
* Drives : DEV (4 Color)/ITB Cleaning)

15) SMPS (Switching Mode Power Supply)

This power supply uses the AC supply voltage to generate the DC voltages used by the system.
The SMPS has 5 output channels (+3.3V, +5V, +24V, +24VF1, +24VF2).
The AC Heater Control Unit that supplies power to the fuser is also located on the SMPS.

16) HVPS (High Voltage Power Supply)

The HVPS creates the high voltages (Charger, Supply, T1, T2, Developer) used for the electro
photographic process. The high voltage is created from the 24V line from the SMPS. High Voltage
output is supplied to the toner cartridge, OPC drum unit, PTB unit, and T2 Transfer roller.

17) Main Controller PBA

The Main controller PBA is very important as it is the heart of printer. It has several major function
blocks.
* CPU (SPL-C : RM523A + 32ousc) : This manages the printing order from the host, creates bitmap

data for the engine to print and controls various devices that are needed to operate the printer.
*Engine Control Block: This manages images and controls various kinds of I/O
* Memory Block : The operating system uses this to store video data and printing orders given by host.
* ROM Block : The printer OS and PDL Interpreter are stored here.
* In addition there are USB 2.0 Block, IEEE 1284 Block, Option Block, OPE Panel, etc.

18) Drive PBA

Each toner cartridge requires the HV Supply only when that colour image is being processed. This
unit takes its HV source from the HVPS and using 4 solenoids selects which cartridge is to receive
the Supply voltage. This section also contains the DEVE motor, DEVE clutch, and DEVE solenoid
drives. These are activated in sequence as required by the printing process.

19) DEVE CRUM PBA

This detects new or used toner cartridges and also checks that cartridges are approved parts. If a
toner cartridge is not suitable for the machine an error message is displayed.

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3.1.3 EP process

1)Charging

Roller charging
Roller resistivity : ~ 10^5 ohm-cm
Applied voltage : -1.0 ~ -1.5kV
Charge acceptance : ~ -550V
OPC coating thickness : ~ 20um
OPC diameter : •’24mm
Non eraser system

2)Exposing

One polygon motor ( 8 facet )
Dual beam LD (2ea)
LD wavelength : 785nm
Polygon motor rpm : ~ 21600
LSU energy : ~ 0.5uJ/cm^2
OPC exposed potential : ~ 50V

OPC

Charging roller

FF--θθLens

Beam

Detector

Mirror

Polygon

Motor

Collimating

Lens

Laser

Diode

(Dual

Beam)

Cylindrical

Mirror

LSU

OPC Drum

FF--θθLens

Beam

Detector

Mirror

Polygon

Motor

Collimating

Lens

Laser

Diode

(Dual

Beam)

Cylindrical

Mirror

LSU

OPC Drum

Y OPC

M OPC

C OPC

K OPC

System Overview

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3)Developing

Non-magnetic, mono component
Non-contact development
Developing bias : DC + AC
AC peak to peak : 1.5 ~ 2.0kV
Mass on developing roller : ~ 550ug/cm^2
Toner coulomb : ~ 20uC/g
Roller diameter : •’12mm
Roller resistivity : 10^5 ~ 10^6 ohm-cm
Process speed ratio : 1.3 (OPC=1.0)
Color order : Y -> M -> C -> K

4)Transfer

Single pass (Tandem) transfer
Direct transfer (No T2 transfer)
Transfer voltage : 0.5 ~ 2.0kV (controllable)
Roller diameter : •’14mm
Roller resistivity : ~ 10^7 ohm-cm
Belt resistivity : 10^9 ~ 10^11 ohm-cm
Paper sensing by attraction roller
Environment sensing by Y-transfer roller
Transfer unit life : 35K

Supplying roller

Developing roller

Toner supplying belt

OPC

Transfer Roller

Attraction Roller

Transfer Belt

Waste Tank

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5)Fusing

E-coil fusing system

-> short warm-up time (45sec)

Heat roller

Pressure roller

CLP-500 CLP-600

Warm-up time

(80sec)

System Overview

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3.1.4 Toner Cartridge

Developing method: Non-magnetic 1 element non-contacting method
Toner: Non magnetic 1 element shatter type toner (Averag Dia. 0.8ß≠)
The life span of toner cartridge : 4,000 Sheets (N/N, Simplex,ISO 5% Coverage Pattern)

Yellow Toner Cartridge

Cyan Toner Cartridge

Black Toner Cartridge

Magenta Toner Cartridge

Right Cover

PTB Unit

CRUM LSU Beam window

Shaft OPC

Front pressure Spring

High voltage contact point
(Charge Roller)

High voltage contact point
(Supply Roller)

High voltage contact point
(Developing Roller)

Handle

Cartridge guide

OPC drive gear

Developing Roller
drive gear

Hinge

OPC Drum

OPC Drum

Shaft OPC

Cleaning Blade

Sheet Waste

Charge Roller

Waste toner tank

Toner tank

Developing roller

Supply roller

Supply belt
Driving shaft

Supply belt
supporter

Supply belt

LSU Beam

Dr. Blade

Gap maintenance (200um)

pressure Spring(driving part)

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OPC Cleaning: Collect the toner by using Cleaning Blade (urethane) transport to the waste toner tank by sheet waste
OPC Drum protecting Shutter : No (Take care of impact)

Method of Toner supply : Toner is transported to the developing roller by supply belt
Regulating Toner level : Regulating Toner level by Sus. Blade
Maintenace of developing gap : Maintenace of developing gap by Gap-ring which is located at the ends of developing

roller

Sheet Waste

shaking transporter

High voltage contact point
(Charge Roller)

Pressure Spring

Driving Gear Case

Gap-Ring

Developing Roller

Sus. Blade

High voltage contact point
(Developing Roller)

High voltage contact
point (Supply Roller)

Cam-Gear

Sheet Waste

System Overview

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3.1.5 PTB Unit (Paper Transfer Belt Unit)

TANDEM Method Paper Transporting Unit by using Paper Transfer Belt
Belt Driving Method : Friction Driving by Drive Roller
The Life Span : Print over 35,000 sheets (in 15~30 °…)

Belt Cleaning : Collect the toner by using Rubber Blade
Management of waste toner : The Waste Toner Tank Be equipped

Transfer material

Paper Path

Paper Charge Roll

Paper Transfer Belt

Transfer material

Paper Path

Paper Charge Roll

Paper Transfer Belt

Transfer material

Paper Path

Paper Charge Roll

Paper Transfer Belt

Drive Roller

Waste Toner Tank

Cleaning Blade

Waste Toner Tank

Cleaning Blade

Cleaning Backup Roller

Transfer Roller Bk
Transfer Roller C

Transfer Roller M

Transfer Roller Y

Tension Roller

Cleaning Blade

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Transfer Voltage Control : ADC Control on Electric Sponge Roller
Accomplishing Auto Color Registration By sensor in Handle-Unit

Handle-Unit

PTB Drive Gear

Terminals in Transfer Roller

PTB Draw Connector

Terminal in PCR

System Overview

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3.2 H/W Structure and Descriptions

3.2.1 VIDEO CONTROLLER (SPL-C MODEL)

1. Printing Resolution True 600dpi ( 1200dpi Addressable ; B/W only)
Image (1,2,4bit grey)

2. Processor RM5231A(MIPS 300MHz)
32-bit RISC core operation
75MHz bus operation
V320USC: DMA Controller + PCI controller
USB2.0: M5622
Printer Video controller for LBP engine
LPEC2: Engine Controller (LSU/PWM/ADC)
JTAG (IEEE 1149.1) standard Support
30MHz PCI BUS control

3. Printer Language SPL-C only

Emulations

4. Memory Slots Standard SDRAM capacity is 32MB

5. Interface USB 2.0

6. Option Interface PCI ETHERNET 10/100BASE-TX by SAMSUNG
PCI ETHERNET 10/100BASE-TX + W-LAN(IEEE 802.11b) by SAMSUNG

7. Control Panel 16 x 2 LCD Panel
LED7+Key3

8. H/W RM7065 - 466MHz, CPU BUS 64-BIT 100MHz

STANDARD
PROCESSOR

9. CO-PROCESSOR Marvel GT-64242A

. Operating Speed Max 133MHz
. MIPSInterface
. SDRAM Controller
. DMA Controller
. PCI Controller

10. RAM 128MB SDRAM TYPE
MEMORY BUS 64-BIT 100MHz

11. ROM 1MB NOR FLASH TYPE for CODE
8MB NAND FLASH TYPE for PROGRAM
None for FONT

12. NVRAM 4K BIT SERIAL INTERFACE(I2C)