Samsung CLP-510_XEV Circuit Description

4

4

4-1

Samsung Electronics

Summary of product

Service Manual

4. Summary of Product

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

4.1 System Structure

4.1.1 Main Parts of System

HVPS

Eraser LampEraser Lamp

HVPS

DEV. - Black

DEV. - Yellow

OPC

Pick-up

Roller

DEV. - Magenta

DEV. - Cyan

CASSETTE

LSU

ITB Unit

Feeder

DUPLEX

T2 Roller

Fuser Unit

EXIT Unit

MPF Path

MPFMPT

DEV. - Black

DEV. - Yellow

OPC

Pick-up

Roller

DEV. - Magenta

DEV. - Cyan

SCF

SCT

FCT

LSU

Deve CoverDeve Cover

ITB Unit

Feeder

DUPLEX

T2 Roller

Fuser Unit

EXIT Unit

PTL

PTL

SCF Path

Pick-up

Roller

Pick-up

Roller

Pick-up

Roller

Pick-up

Roller

4-2

Summary of Product

Samsung Electronics

Service Manual

>> Front View

Deve OEM

PBA

Panel PBA

Waster Toner Sensor

Waster Toner Motor

SMPSSMPS

Main DriveMain Drive

Fan Fan

Deve DriveDeve Drive

Deve Drive PBADeve Drive PBA

Duplex Cover

Open S/W

Duplex Cover

Open S/W

Deve Cover

Open S/W

Deve Cover

Open S/W

Main Conrtoller PBAMain Conrtoller PBA

>> Rear View

4-3

Samsung Electronics

Summary of product

Service Manual

1) OPC Unit

Images are created on the OPC unit using an electro-photographic process. The unit consists of:­* OPC Drum
* Waste Toner Ass'y used to collect waste toner remaining on the OPC drum,
* Charge Roller Assy

2) ITB Unit

ITB stands for Image Transfer Belt. An image developed on the OPC Drum is transferred first to the
ITB. This is called the T1 Transfer (Primary Image Transfer).
Images are built up in layers on the ITB.
First the Yellow (Y) colour image is created on the OPC and transferred to the ITB
Next the Magenta (M) colour image is created on the OPC and transferred to the ITB
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) SCT (Second Cassette Tray)

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

4-4

Summary of Product

Samsung Electronics

Service Manual

6) MPT (Multi Purpose Tray)

The Multi-Purpose Tray 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 (BLDC)
* Driving Management : Solenoid
* Paper Discharge : Friction Pad Method
* Paper Size : Legal, Folio, A4, Letter, Executive, JIS B5, A5, A6
* Paper Weight (Average) : 60~163g/m

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* 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 (BLDC)
* Paper Management : Solenoid

8) Duplex Unit

The Duplex Unit is used to reverse feed paper when printing on the second side (known as Double
sided or Duplex printing). The Duplex Unit is not an optional extra, it is built-in at manufacturing
time and is integral with the Transfer Roller.

> Spec.

* Power : Main Motor (BLDC)
* Paper Reverse Function: After the front side of the original document is printed, it is transferred

to the duplex unit in order to print the reverse side of original document. The motor drives
the exit roller in the reverse direction to feed the paper back into the machine.

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.

* Bin Full Sensor : There is no Bin Full sensor fitted on this model.

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.

11) Fuser Unit

This unit consists of 2 Heat Lamps, 2 Heat Rollers, 2 Thermostats and a Thermister. It melts and
fuses the toner, transferred by the transfer roller onto the paper, by applying pressure and high
temperature to complete printing job.

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

4-5

Samsung Electronics

Summary of product

Service Manual

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 4 output channels (+3.3V, +5V, +24V, +24VF).
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, ITB unit, and 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 and SPGPm Block: 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) DEVE 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 OEM 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.

20) Waste Toner Ass’y

A cleaner blade on the OPC unit cleans waste toner from the OPC drum after every image is
transferred to the ITB. Once the complete image is transferred from the ITB onto paper the ITB
Cleaning Solenoid activates and a cleaning blade removes waste toner from the ITB. Waste toner
is transferred to the waste toner tank.
The error message "Waste Toner Tank Full/ Not Install" is indicated on the LCD Panel. Replace the
Waste Toner Tank immediately or the printer may be damaged

4-6

Summary of Product

Samsung Electronics

Service Manual

4.1.2 Motor & Fan Layout

Fan

1. Main Motor

2. DEVE Motor

4. Waste Toner Motor

Fan

1. Main Motor

2. DEVE Motor

4. Waste Toner Motor

NO. Name Description

1 Main Motor Drives the OPC unit, ITB unit, feeder unit, fuser unit, exit unit and

duplex unit.

2. DEVE Motor Drives C, M, Y and K toner cartridges and ITB cleaning cam.

3. Fan Forces cold air into the printer and takes out heat from the fuser.

4. Waste Toner Motor Transfers collected waste toner from the OPC drum and ITB to the
waste toner tank. (Refer to front view picture on 4-2 page)