Text preview for : 05_Operation Instruction & Installation.pdf part of Samsung CLP-500 Samsung CLP-500 Service Manual
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Summary of product
This chapter describes the functions and operating principals of the main components.
EXIT Unit EXIT Unit
HVPS HVPS
PTL PTL
Fuser Unit Fuser Unit
ITB Unit ITB Unit
Deve Cover
DEV. - Black DEV. - Black
T2 Roller T2 Roller
DEV. Yellow DEV. -- Yellow
DEV. - Magenta DEV. - Magenta
OPC OPC
LSU
DUPLEX DUPLEX
4. Summary of Product
DEV. - Cyan DEV. - Cyan
Eraser Lamp Eraser Lamp
Pick-up Pick-up Roller
Feeder
CASSETTE FCT
Pick-up Roller Roller
MPF Path
4.1 System Structure
4.1.1 Main Parts of System
SCF Path
4
Samsung Electronics
SCT SCF
Pick-up Roller Roller
T F MP MP
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Summary of Product
>> Front View
Panel PBA
Waster Toner Sensor
Deve OEM PBA
Waster Toner Motor
>> Rear View
Deve Drive
Fuser Fan
Deve Drive PBA
Main Drive
Duplex Cover Open S/W
Deve Cover Open S/W
SMPS Conrtoller PBA
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Traninung Manual Samsung Electronics
Summary of product
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 * Etc.
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/m2 20lb) * 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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Summary of Product
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/m2 20lb) 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/m2 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 transfers the printing paper to the duplex unit for printing the reverse side of original document which is reverse fed by the exit roller.
9) Exit Unit
The Exit Unit guides paper that is just about to leave the print engine. Printed-paper is discharged by 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
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Summary of product
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 : 40W 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 : 40W 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 3 output channels (+3.3V, +5V, +24V). 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 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 Supply HV 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. When the error message "Waste Toner Tank Full/ Not Install" is displayed on the LCD Panel replace the Waste Toner Tank immediately. Using the printer without a Waste Toner Tank or with a full tank may damage the printer.
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Summary of Product
4.1.2 Motor & Fan Layout
1. Main Motor 3. Fuser Fan
2. DEVE Motor
4. Waste Toner Motor
NO. 1 2. 3. 4.
Name Main Motor DEVE Motor Fuser Fan Waste Toner Motor
Description Drives the OPC unit, ITB unit, feeder unit, fuser unit, exit unit and duplex unit. Drives C, M, Y and K toner cartridges and ITB cleaning cam. Forces cold air into the printer and takes out heat from the fuser. Transfers collected waste toner from the OPC drum and ITB to the waste toner tank. (Refer to front view picture on 4-2 page)
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Summary of product
4.1.3 Clutch & Solenoid Layout
Duplex Solenoid ITB Cleaning Solenoid DEVE (C, K, Y, M) T2 Home Solenoid
Black Deve Clutch
Yellow Deve Clutch Magenta Deve Clutch Cyan Deve Clutch Feed Regi Clutch
MP Pick_up Solenoid
Pick_up Solenoid
>>Solenoid
NO. 1. 2. 3. 4. 5. 6. 7. Name C DEVE solenoid K DEVE solenoid Y DEVE solenoid M DEVE solenoid Pick-up solenoid MP Pick-up solenoid Duplex solenoid Description Controls the High Voltage supply to the cyan cartridge. Controls the High Voltage supply to the black cartridge. Controls the High Voltage supply to the yellow cartridge.. Controls the High Voltage supply to the magenta cartridge. Controls the pick-up roller drive. Controls the MP pick-up roller drive. When operating in duplex print mode, this reverses the direction of the main motor to feed paper into the duplex unit. This forces the transfer roller into contact with the ITB unit. This brings the cleaning blade into contact with the ITB unit
8. 9.
T2 Home solenoid ITB cleaning solenoid
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Summary of Product
>>Clutch
NO. 1. 2. 3. 4. 5. Name Yellow DEVE clutch Magenta DEVE clutch Cyan DEVE clutch Black DEVE clutch Feed Regi. Clutch Description Controls Yellow color toner cartridge drive Controls Magenta color toner cartridge drive Controls Cyan color toner cartridge drive Controls Black color toner cartridge drive Controls the location of picked-up paper
4.1.4 Sensor & Micro S/W Layout
NO. 1. 2. 3. 4. Name Paper Empty Sensor(FCT) Paper Empty Sensor(SCT) Paper Empty Sensor(MPT) Feed Sensor Description This sensor detects paper in the first (main) cassette. This sensor detects paper in the second (optional) cassette. This sensor detects paper in the multi-purpose tray. This sensor must operate within a certain time after paper pickup otherwise a JAM is detected 5. ITB Home Sensor This detects the position of the image transfer belt, and indicates the start location for image writing. It is used to ensure that all 4 colour images are correctly registered. 6. CTD Sensor This stands for Color Toner Density Sensor. It detects toner density of each color image that is formed on the OPC drum. 7. Waste Toner Sensor This detects whether the waste toner tank is mounted or not and the amount of waste toner in the tank. 8. 9. 10. Note: Exit Sensor DEVE Cover Open S/W Duplex Cover Open S/W This detects whether printing paper is discharged or not. This detects the open/closed status of the DEVE Cover. This detects the open/closed status of the Duplex Cover.
* ITB Home Sensor and CTD Sensor are located in the ITB unit. If they develop a fault replace the ITB unit. * Please, refer to the Chap. 7 Arrangement and Adjustment, "Paper Path diagram", for the location of the paper empty sensor, feed sensor, and exit sensor. * Please, refer to page 4-2 for the location of the waste toner sensor, DEVE cover open S/W, and duplex cover open S/W.
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Traninung Manual Samsung Electronics
Summary of product
EXIT CN19 TH3 PTL
CN11
CN17 WASTE TONER
CN10 ITB
TH4
CN13
CN7
HVPS
DUPLEX CN24
CN15
CN4
PANEL
T2 HOME CN26
BLDC1 CN27
FSR_ROLL CN28 FUSER_FAN CN29
CN9 NIC
SMPS CN30
USB
MP EMPT CN30 MP SOL CN32 FEED CN33
CN1 For Test
Parallel Port
4.1.5 Main Controller PBA
Traninung Manual
PICK_UP CN25 CLT_FEED CN23 EMPT CN21
CN16 SCF
CN12 LSU CN6 OPC KEY
CN5
DEVE_DRIVER
CN14 LSU SW
CN8
ERASER
CN35 LSU_FAN
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OSC3 19.900614MHz
OSC2 12MHz (Reserved)
FLASH MEMORY
OSC4 30MHz
OSC1 12MHz
Summary of Product
LPEC1 (ENGINE CONTROL)
DIMM
RAM
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SPGPm Main Control
Traninung Manual
Samsung Electronics
Summary of product
Flash Memory 2MB
NPC / (W-LAN) Optional Full Function LPEC1
Engine SDRAM SPGPm 64MB Control Bloc k
SDRAM DIMM 5 pin UART Panel 16x2 LCD EEPROM 4k bit USB 2.0 34MB~128MB
1) CPU BLOCK
This is the heart of the machine. A 120MHz - 32bit RISC processor is used to manage commands and data supplied by the host. This is converted into a bitmap image which is passed to the engine block for printing. The CPU is also used to control various other devices e,g, the USB 2.o Interface chip.
2) SPGPm overview
* Package - 272 pins PBGA * Power - 1.8V(Core), 3.3V(IO) power operation - P1284 inputs : 5V tolerant * Speed - 120MHz core(ARM946ES) operation, 60MHz bus operation - Supportable Engine Speed : under 30ppm * Dual bus architecture for bus traffic distribution - AMBA High performance Bus (AHB) - System Bus with SDRAM * Integrated ARM946ES - 32-bit RISC embedded processor core - 16KB instruction cache and 16KB data cache - No Tightly Coupled Memory - Memory Protection Unit & CP15 control program
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Summary of Product
* Direct connection up to 4 Flash ROM banks - Burst capability - Programmable timing per bank - Up to 16MB address per bank (Limited to 8MB per bank when nDREQ0 is enabled) * Direct connection up to 6 I/O banks & 4 DMA I/O banks - Programmable timing per bank - Programmable recovery timing per bank for slow devices - Up to 16MB address per bank (Limited to 8MB per bank when nDREQ0 is enabled) * Direct connection up to 5 SDRAM arrays - SDRAM controller supports PC-66, PC-100 and PC-133 SDRAMs running at 60MHz - Up to 128MB per array, up to 512MB totally - Wide supports for various SDRAM configurations, including programmable band and column address - Programmable SDRAM refresh time interval * 4 General Purpose DMA controllers - Extensible architecture allows peripheral devices such as scan devices to have access to SDRAM arrays through DMA channels - 8bits, 16bits and 32bits Data Transfer Modes are supported - IO to Memory, Memory to IO, Memory to Memory transfer support * IEEE1284 compliant parallel port interface - Compatible ECP communications are supported - Direct support for IEEE1284 compliant data transceivers * RSH - Fully Hardware Rotator, Scaler and Halftoner support - Variable Image Scaler and Image Halftoning Unit for PCL6 - Pattern & Gamma Table Memory : 1024 x 8, 256 x 8 x 4 * Graphic Execution Unit for Banding support of Printer Languages - Support up to 256 Bit Block Transfer - Scan Line Transfer - Polygon Filling - Enhanced Graphic Order * Compression / Decompression - CODEC : Simplified JBIG algorithm for band compression / decompression - HCT : Halftone Compression Technology (Byte Run-Length Type) - Independent use of both Codec, but enabling only one Codec is desirable for bus traffic * UART - 3 Independent Full Duplex UART channels - Max 16 bytes FIFO to handle SIR Bit Rate Speed - DMA support for RX and TX of Channel0 * Printer Video Controller for LBP engines - 20MHz video rate are targeted - Two different kinds of Printer Video Controller (Selected by Software) - PVC : Printer Video Controller without RET Algorithm - HPVC : Printer Video Controller with RET algorithm (Line Memory & Lookup Table Memory : 512 x 8 , 4096 x 16) - High performance DMA based Interface to Printer Engine - Engine Controller - Motor Control Unit - Motor Speed Lookup Table Memory (128 x 16 x 2) - Pulse Width Modulation Unit - 4 Channels are supported - ADC Interface Unit - 3 ADC Channels are available - ADC Core (ADC8MUX8) maximum clock frequency : 3 MHz - Coversion time : 4.3us (@3MHz) - LSU Interface Unit
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Summary of product
* Timer - 3 Independent Programmable Timers - Watch Dog Timer for S/W Trap and Tone Generator for MFP Application Up to 5 External Interrupts support - High active interrupt signals - FIQ/IRQ Interrupt mode selectable Ethernet Controller (MAC) - Full compliance with IEEE standard 802.3, 802.3u specification - Support 10/100 Mbps data transfer rates - DMA engine with burst modes (4 words burst and 8 words burst are supported) USB 2.0 interface - USB 1.1 backward compatible - UDC(USB Device Controller) block and USB Physical block are integrated - Both of High Speed(480Mbps) and Full Speed(12Mbps) are supported - 2 DMA channels support : one RX Channel and one TX Channel - Interrupt transfer support up to 6 Endpoints - EP0 In/Out (Control transfer), EP1 In/Out (Bulk transfer), EP2 In/Out (Bulk transfer) Debug support - Only MultiICE logic support from ARM9 series - 5 JTAG connections : TCK, TnRST, TMS, TDI, TDO - Internal logic for synchronizing TCK and high speed CLK - Maximum TCK frequency : 20MHz (CLK x 1/6)
*
*
*
*
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Summary of Product
3) Memory Block
The operating program runs from memory (see below). It is used to store video data and printing jobs from the host. Standard factory fitted memory is 64MB, and can be expanded using a DIMM module mounted in the SODIMM connector. This is a user fit option, DIMMs from 64Mb - 128MB can be used giving a total of up to 192MB of memory. DIMM modules are non standard - only Samsung product should be used. The memory controller is located in the SPGPm controls the SDRAM memory connected using a 32 bit 60 MHz bus.
4) ROM Block
An 2MB flash ROM is used to store the OS. The ROM controller is contained in the SPGPm processor. When initializing after power on the contents of ROM are downloaded into memory and the OS is run from within memory.
5) USB 2.0 Block
A Netchip Co. NET2270 is used to provide support for USB2.0 and is capable of interface speeds up to 480Mbps. Under control of the SPGPm chip DMA is used to transfer incoming data directly into memory.
6) IEEE 1284 Block
An IEEE 1284 controller is controlled directly by the SPGPm processor. ECP mode is supported.
7) Option Block
An Ethernet card can be attached using the 100 pin connector. It is connected directly to the SPGPm processor and communicates using a 16bit bus.
8) OPE Panel
The OPE panel is controlled by a UART Block located in the SPGPm and it displays printer status and helps the user to setup the printer. Various data is transferred using a serial interface between a Mycom located in the OPE panel and the UART in the SPGPm.
9) Memory
There are two types of memory, program memory that uses flash and a working memory that uses SDRAM. When printing working memory is used as band memory.
10) Sensor
Various sensors are used to detect various conditions during the printing process. These include paper empty sensor, feed sensor, exit sensor, CTD sensor, ITB sensor, etc.
11) Actuator Control
This section drives the various motors and clutches that are required for the paper feed and printing process. These include DEVE cartridge clutches (4 off), Feed Regi clutch, DEVE solenoids (4 off), Pick solenoids (2 off), Duplex solenoid, ITB and T2 solenoids.
12) ADC
The ADC unit is used to sense a number of analog parameters used in the set. These include Fuser and Set temperatures, OPC, ITB and Toner OEM resistors, Waste Toner tank full / present, Waste Toner Motor and T1 / T2 / Charge currents, CTD sensor.
13) DAC
The DAC is used to control the light intensity emitted by the CTD LED.
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Summary of product
4.1.6 SMPS (Switching Mode Power Supply) PBA
The SMPS unit supplies DC power for driving the whole system, it also contains an AC heater control unit that supplies power to the fuser.
1) DC output
- Main controller PBA, OP panel, SCF, Developer driver PBA
2) AC output
-Fuser unit (Heat lamp, Thermostat)
3) Output voltage
NO 1 2 3 Item Channel name Rated outputting voltage Uses CH1 +3.3V 3.3V ± 4% MICOM,CMOS LOGIC CH2 +5V +5V ± 4% MICOM,CMOS LOGIC CH3 +24.0V +24V + 15%/-10% MOTOR,FAN CH4 +24.0VF +24V + 15%/-10% MOTOR,FAN
CON4 CON3 CON4 CON3
CON1
CON2 CON1 Fuse CON2
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Summary of Product
4.1.7 HVPS (High Voltage Power Supply) PBA
The HVPS PBA uses the 24V created by the SMPS to generate the high voltages used by the charger, supply, T1,T2 and DEVE processes. For bests quality images these high voltages must be , controlled accurately to maintain the print quality. The high voltages produced are supplied to toner, OPC cartridge, ITB unit, and transfer roller.
SUPPLY CHARGER
T1
T2
CN1
CN2
SUPPLY CHARGER
T1
T2
CN1
CN2
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Summary of product
1) Charging Voltage: Charger
* Function : This high voltage is used to charge the surface of the OPC to about -500volt~800volt. * Output voltage : -200V~-2.0KV DC +/- 3% (Duty is changeable, no loading) * Error type :If MHV was not present, the surface of the OPC is not charged. As a result, toner on the developer roller is transferred over to the OPC drum: therefore, black paper could be printed out.
2) Transfer high voltage: T1(+)
* Function : This high voltage is used to transfer toner from the OPC drum to the ITB unit. * Output voltage : +400V~ +3.5KV DC +/- 3% (Duty is changeable, no loading) * Error type : If T1 was not present, it is not possible to transfer toner from the OPC drum to the ITB. As a result, printer output could be faint.
3) Transfer High Voltage: T2 (+)
* Function : this high voltage is use to transfer toner from the ITB to the paper. * Output voltage : +400V~ +5KV DC +/- 3% (Duty is changeable, no loading) * Error type : If T2 was not present, it is not possible to transfer toner from the ITB to the paper. As a result, printing output could be faint
4) Cleaning voltage: T2 (-)
* This high voltage is used to transfer (-)toner, remains on transfer roller, from the Transfer Roller to the ITB unit. * Output voltage : There is no feedback control, and it outputs a fixed voltage (-900V). * Error type : Toner contamination occurs on the reverse side of the printed-paper.
5) Supplying voltage: Supply
* Function : Supply the duplicated (AC+DC) voltage from the HVPS to the Deve Drive Board. * Output voltage AC Voltage f : 1 Khz ~ 3Khz (Duty is changeable) AC Voltage Vp-p : 1KV ~ 3KV DC : -100V ~ -1000V * Error type: 1. If this voltage is GND, print density is extremely low. 2. If this voltage is floating due to unstable contact point at the HV terminal, density becomes so low as that printing results are not visible to the naked eye.
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