Samsung ML-2010 Operation Instruction & Installation

System Overview

Samsung Electronics

Service Manual

3-1

3

3. System Overview

3.1 System Outline

Paper Path Layout

BIN PATH

❶ SMPS ❷ Fuser ❸ Toner Cartridge ❹ LSU ❺ Exit Roller ❻ OPC ❼ Pick-Up Roller ❽ KNOCK-UP PLA TE ❾ KNOCK-UP PLA TE DOWN ❿ ASS’Y HOLDER P AD 󱆌 Feed Sensor 󱆍 MAIN PBA 󱆎 SMPS 󱆏 HVPS

󱆏

Samsung Electronics

Service Manual

System Overview

3-2

Unit Layout

HVPS

SMPS

Main PBA

Motor

LSU

Panel

System Overview

Samsung Electronics

Service Manual

3-3

3.1.1 Feeding

There are the C-path type, which loads papers, and the manual feeder, which supplies paper one by one.The cassette has the function pad which separates paper one by one, and it has the sensor function to check the existence of the loading paper.

1) Feeding Type : MPF Type

2) Feeding Standard : Center Loading

3) Feeding Qty : Cassette 150 sheets (75g/

, 20lb paper standard)

4) Manual 1 sheet (Paper, OHP, Envelope etc.)

5) Separating Type : Cassette - Friction Pad Type

6) Manual : None

7) Driver Type : Driving by Gearing from Main Motor

8) Pick_up Roller Driver : Solenoid

9) Paper detecting Sensor : Photo Sensor

10) Paper Size Sensor : None

11) Paper Exit Type : Face Down

12) MP Tray : MP Cassette Type (Cener Loading)

3.1.2 T ransfer Ass’y

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

- The life span : Print over 50,000 sheets (in 16 ~30 )

3.1.3 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.(Motor drive IC : A3977)

- It is a power delivery unit by gearing : Feeder/Developer Motor Fuser/Exit

3.1.4 FUSER

The fuser is consisted of the Heat Lamp,Heat Roller,Pressure Roller,Thermister and Thermostat. It adheres the toner on the paper with pressure and heat to complete the printing job.

- Life Cycle : 50K(pages)

Samsung Electronics

Service Manual

System Overview

3-4

1) Heat Lamp . Heat Lamp Terminal Shape : Terminal Single Type . Voltage 120 V : 115 + /- 5 %

220 V : 230 + /- 5 % . Capacity : 600 Watt + /- 30 W . Life : 3000 Hr

2) Thermostat . Thermostat Type : Non-Contact type THERMOSTAT . Control Temperature : 150 5

3) Thermistor . Thermistor Type : HF-R0060 (SEMITEC 364FL Type) . Temperature Resistance : 7 (180 ) . SYSTEM Temperature SETTING

- Stand by : 165 + /- 5

- Printing : 175 + /- 5 (5 minutes before) 170 + /- 5 (5 minutes after)

- Overshoot : 200 or less

- Overheat : 210 or less

4) Heat roller . Length : 254 mm . Valid length : 222 mm . GND Type : H/R Bearing Grounding type By SECC Fuser frame

5) Pressure roller . Shaft

- Length : 239.5 mm

. Rubber

- Length : 222 mm

6) Paper separation method

Teflon Coating with SUS Plate Claw System

7) Safety Relevant Facts . Protecting device when overheating

- 1st protecting device : H/W cuts off when detecting an overheating

- 2st protecting device : S/W cuts off when detecting overheating

- 3st protecting device : Thermostat cuts off the power

. Safety device

- The power of Fuser is cut-off after front cover is open.

- The overheating safety device for customer

- The surface temperature of the Fuser Cover is under 80

System Overview

Samsung Electronics

Service Manual

3-5

3.1.5 LSU (Laser Scanner 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. The one side of the polygon mirror is one line for scanning..

OPC Drum

Photo Diode

LD Driver circit

Protector panel

LD(Laser Diode)

Polygon Mirror

Polygon Motor

Motor Driver

Samsung Electronics

Service Manual

System Overview

3-6

Cleaning Roller

Cleaning Blade

-720V

-350V

-550V

0.20mW

Max -1.4KV

-100V

1

2

3

4

5

6

7

8

+5KV

-150V↓

3.1.6 T oner Cartridge

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

- Developing Method: Non magnetic 1 element contacting method

- Toner: Non magnetic 1 element shatter type toner

- The life span of toner: 2,000 sheets (ISO 19752 Pattern/A4 standard)

- Toner Cartridge : Initial(1,000), Sales(3,000)

- Toner remaining amount detecting sensor: None

- OPC Cleaning: Collect the toner by using electric static + FILM OPC

- Management of disusable toner: Collect the toner by using electric static (Clenerless Type- No disusable toner)

- OPC Drum protecting Shutter: None

- Classifying device for toner cartridge: ID is classified by interruption of the frame channel.

System Overview

Samsung Electronics

Service Manual

3-7

3.2 H/W Structure and Descriptions

3.2.1 H/W Overview

ML-2010 is roughly made up Main Control part and SMPS/HVPS part. Main Controller uses Jupiter4E for its ASIC, which is on chip micro controller and developed for Low-end Laser Beam Printer. Jupter4E provides the integrated printing functions such as Printer video controller, Laser Scan Unit controller, PWM controller and Bi-polar Stepper Motor Controller and has USB interface and built-in Flash memory with 4Mbits capacity.

3.2.1.1. Main Control

ML-2010 of Main Control are composed of CPU and Print and operate follows function by CPU

- Bus Control, I/o

- Handling, each Driver and PC Interface Main Control operate its full function on the Main B'd and CPU control Controller ASIC and build-in Memory.

3.2.1.2 CPU

Use 32Bit RISC Processor of Jupiter4e, and control system by operating Operation Block of the System Program inside Flash Memory.

SMPS

HVPS

Jupiter IV ASIC V1.1 USB

Printer Engine

B’D

DRAM 2M Byte

Flash Memory

0.5M Byte

OPE B’D

(Build-in HVPS)

Main Controller

LSU

Motor

Samsung Electronics

Service Manual

System Overview

3-8

- Main Function Block: Completely Integrated System for Embedded Applications,

32 Bit Risc Architecture, Efficient and Powerful ARM9 CPU LSU Interface Module for Interfacing PVC with LSU 2 Channel General Purpose DMA Controller for High Speed I/O Dual Memory Bus Architecture

- Operation Frequency : 150MHz

- Operation Voltage : 3.3V

- POWER ON RESET TIME : 6.6ms below

3.2.1.3 Flash Memory

Store System Program and can be down load System Program through PC Interface

- Capacity : 0.5M Byte

- Access Time : 70 nsec

3.2.1.4 DRAM

When Printing, use Band Buffer, System Working Memory Area .

- 8M capa : 8M Byte basic. 2M :Printing System Working Memory Area

- Access Time : 60 nsec

3.2.1.5 ENGINE

This recording method is electrophography method using LSU, which toner is composed of 1 component and non magnetic.

1) Recording Method : LSU(Laser Scanning Unit)

2) Printing Speed : 20ppm (In continuing printing base A4, printing pages from 2nd to last during 1min)

3) Recording Density : 600 dpi 1200 dpi

4) Cassette Capa. : Cassette ; 150sheets(75g Base),

Manual : N/A((DRIVE Selection : Paper, OHP, Envelop - 1 sheet)

5) Paper Size : Cassette ,Manual; Width = 76 ~ 216mm, Length = 125mm ~ 356mm

6) Effective recording size

- A4 : 202 x 291 mm

- Letter : 208 x 273 mm

- Legal : 208 x 350 mm

- Folio : 208 x 325 mm

- Top Margin : 4.23 ° 3 mm

- Left, Right Margin : 4.23 ° 3 mm

7) CRU(Toner Cartridge)Life : 2,000pages Printing(A4, 5% Pattern Printing)

8) First Print Out Time : within 11sec( Standby )

9) Warming up time : within 30sec (Ambient : 25° )

System Overview

Samsung Electronics

Service Manual

3-9

3.2.2 Main Board

Main Board are composed of Engine and Controller on the one-Board. Main Board control to send Current Imagedml Video Data to LSU to print and have motor Driving and Circuit for the current driving and also include Paper Exit Sensor, Cover Open s/w, panel s/w.

U1

U3

12.0MHz

U8

U9

U12

U10

U7

U5

(IC-DRAM/

512K x 16Bit)

(IC-POSI, ADSUST REG)

(IC-CMOS LOGIC, INVER TER)

(IC-MOTOR DRIVER)

(IC-VOLTAGE COMP)

(IC-CLOCK GENERATOR)

(IC-EEPROM/256x12Bit)

(IC-POSI, FLXED REG)

Samsung Electronics

Service Manual

System Overview

3-10

U6(Jupiter 4E)

- It is a main CPU and an Asic of Jupiter4E which has a CPU core CLK with over 150MHz and a System bus 75MHz.

- It use 3.3V for operation voltage and I/O, It uses 75MHz for system bus CLK, Built in Flash Memory.

SDRAM

- Main memory. SDCLK is 75Mhz.

A3977

- It is an Main motor driver IC and controls the motion of main motor.

Regulator

- It Supplies the core voltage to CPU by converting 3.3V to 1.8V.

EEPROM(U8 : 93C66)

- It is an EEPROM with 12C method.

SMPS connector(CN8)

- It connects SMPS, supplies the power, and delivers the high voltage contol signal, etc. If a harness is not normally

connected to this connector, power cannot be supplied.

LSU connector(CN12)

- It connects a LSU.

DC Motor connector(CN11)

- It connects an main motor and drive a DC motor.

HVPS connector(CN10)

- It connects a HVPS.

DCU connector(CN1)

- It interface a DCU-JIG

USB connector(CN6)

- It interface a the printer.