Samsung SF 560, SF565P Operation Instruction & Installation
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4. Summary of Product
This chapter describes the functions and operating principals of the main components.
4.1 Printer Components
4.1.1 Front View
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4.1.2 Rear View
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4.1.3 Control Panel
< SF-560/565P >
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4.2 Overview of System
SF-560/SF-565P can be divided into the following main constituent parts: Main Controller, Operator’s Panel, PC
Interface, Scanner, Line Interface and Power Supply. The Main Controller uses an SPGPm processor. The
Operator’s panel; (OPE) has its own MICOM which communicates serially with a UART built into the SPGPm
processor. The Scanner uses an Image Processor chip (CIP4) to control the CIS. The Line Interface an FM336
integrated with the Main Board and communicates with the LIU at speeds up to 33.6Kbps. The Power Supply has
both the SMPS and HVPS integrated on one PBA.
4.2.1 Main Controller.
The Main Controller of the SF-560/565P consists of two ASICs (CPU, Image Processor), Scanner, Fax Modem
and Print sections. Bus Control, I/O Handling, Scanner, all motor drivers and the PC Interface function is controlled
by the CPU.
It uses the chorus2. These control the peripherals and the Image Processing.
4.2.2 Line Interface.
This part connects the set with the PSTN. The main functions of this section are Line Interface, Line Monitoring,
and connection to an external phone or TAD using the built in EXT connector..
4.2.3 Print Engine.
The Print Engine consists of the following sections: Frame, Paper Feed, Image Transfer, Imaging Unit, Toner
Cartridge, Fuser, High Voltage Supply and Scanner. The set uses an Electro Photographic process using the LSU
to develop a latent image on the OPC drum. The Toner process is a single part diamagnetic process. Copy and
Transfer processes use a CIS Module.
4.2.4 Scanner.
The scanner is designed around a 200dpi CIS module. The CIS scanning width is maximum 216mm,
effective width is 208mm. The SF560 operates at 200lpi, the SF565 operates at 300 lpi.
4.2.5 Summary of Main Unit
- Main Board
This is an integral unit having the Engine and Video control on a single PBA. It controls the Electrophotographic
Process to take the image from the PC Interface and generate the Video Data for the LSU. It also manages the
transfer of that image onto paper and the fusing of the image. The main PBA unit consists of the following circuits:
Motor (Paper Feed and Exit) Driver, the Clutch driver, Pre-transfer Lamp Driver, the Fuser Driver and the Fan
Driver. The signals from the Paper Feed Sensor, the Paper Empty Sensor, MPsensor and Exit Sensor are input to
the Main Board from the SMPS/HVPS PBA.
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- SMPS Board & HVPS Board
These are integrated into a singe PBA. The Power Supply uses the 110VAC/220VAC supply voltage to
generate the DC Voltages used by the system. The SMPS has 3 output channels (+5V, +12V, +24V, +24VS) and
supplies the Main Board and the OPE Board.
The HVPS creates the high voltages (THV/MHV/Supply/Dev) used for the electrophotographic process. The high
voltage is created from the 24VS line from the SMPS. High Voltage output is supplied to the Toner, the OPC
Cartridge and the Transfer Roller.
- OPE Board
The Operation Panel is driven by its own internal program using the OPE MICOM chip separate from the Main
Board processor. Data is transferred using the UARTPort in the Main Controller serially. This unit
consists of the MICOM, the Key Pad Matrix and the LCD.
- Toner Cartridge
The Toner Cartridge consists of integrated Exposure and Developer units. The Exposure Unit consists of the OPC
Drum and the Charge Roller, and the Developer Unit consists of the toner particles and its tank, the Supply Roller
and the Developer Roller.
- LSU (Laser Scanner Unit)
This is the core of the laser printer. It converts the video data received from the computer into an electrostatic
latent image on the surface of the OPC drum. This is achieved by controlling the laser beam and exposing the surface of the OPC drum to the laser light. Arotating polygon mirror reflects the laser light onto the OPC and each
side of the mirror is one scan line. The OPC drum turns as the paper feeds to scan the image down the page.
The /HSYNC signal is created when the laser beam from LSU reaches the end of the polygon mirror and this 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 the paper.
- Toner Transfer
Toner is transferred from the OPC drum onto the paper using a PTL (Pre-transfer Lamp) and a transfer roller. The
PTL shines light onto the OPC, this reduces the electrical charge on the surface of the OPC
surface and improves the efficiency of the transfer.
The transfer roller transfers toner from the OPC drum to the paper.
Life span: Print over 100,000 sheets (at 15~30ºC)
- Fuser
This consists of a heat lamp, heat roller, pressure roller, thermistor and thermostat. By use of heat and pressure
toner is caused to melt and adhere to the paper surface in order to complete the printing process.
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