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WorkCentre PE16
SERVICE
WorkCentre PE16
Manual
CONTENTS
1. Precautions 2. Reference Information 3. Specifications 4. Summary of product 5. Disassembly and Reassembly 6. Alignment and Adjustments 7. Troubleshooting 8. Exploded Views and Parts List 9. Block Diagram 10. Connection Diagram
XXX-XXXX-XX
Precautions
1
1. Precautions
Product Terms
Caution: A personal injury hazard exists that may not be apparent. For example, a panel may cover the hazardous area. Danger: A personal injury hazard exists in the area where you see the sign.
Symbols Marked on the Product
Hot surface on or in the printer. Use caution to avoid personal injury.
Use caution (or draws attention to a particular component). Refer to the manual(s) for information.
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Precautions
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 60825. 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 precautions 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, N R SIKKERHEDSBRYDERE ER UDE AF FUNKTION. UNDG UDSAETTELSE FOR STR LNING. 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 N KYM TT M LLE LASERS TEILYLLE L KATSO S TEESEEN.
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Service Manual July 2003 WorkCentre PE16
Precautions
Power Safety Precautions
Power Source
For 110 VAC units, do not apply more than 140 volts RMS between the supply conductors or between either supply conductor and ground. Use only the specified power cord and connector. For 220 VAC units, do not apply more than 264 volts RMS between the supply conductors or between either supply conductor and ground. Use only the specified power cord. This manual assumes that the reader is a qualified service technician.
Plug the three-wire power cord (with grounding prong) into a grounded AC outlet only. If necessary, contact a licensed electrician to install a properly grounded outlet. If the product loses its ground connection, contact with conductive parts may cause an electrical shock.
Disconnecting Power
Turning the power off using the On/Off switch does not completely de-engergize the equipment. You must also disconnect the unit power cord from the AC outlet. Position the power cord so that it is easily accessible during servicing so that you may power down the unit during an emergency. Disconnect the power plug by pulling the plug, not the cord. Disconnect the power cord in the following cases:
if the power cord or plug is frayed or otherwise damaged, if any liquid or foreign material is spilled into the case, if the equipment is exposed to any excess moisture, if the equipment is dropped or damaged, if you suspect that the product needs servicing or repair, whenever you clean the product.
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Precautions
Electrostatic Discharge (ESD) Precautions
Some semiconductor components, and the respective sub-assemblies that contain them, are vulnerable to damage by Electrostatic discharge (ESD). These components include Integrated Circuits (ICs), Large-Scale Integrated circuits (LSIs), field-effect transistors and other semiconductor chip components. The following techniques will reduce the occurrence of component damage caused by static electricity. Be sure the power to the chassis or circuit board is off, and observe all other safety precautions.
Before handling any semiconductor components assemblies, drain the electrostatic charge from your body. This can be accomplished by touching an earth ground source or by wearing a wrist strap device connected to an earth ground source. Wearing a wrist strap will also prevent accumulation of additional bodily static charges. Be sure to remove the wrist strap before applying power to the unit to avoid potential shock. After removing a static sensitive assembly from its anti-static bag, place it on a grounded conductive surface. If the anti-static bag is conductive, you may ground the bag and use it as a conductive surface. Do not use freon-propelled chemicals, as they can generate electrical charges that may damage some devices. Do not remove a static sensitive replacement component or electrical subassembly from its protective package until you are ready to install it. Before removing the protective material from the leads of a replacement device, touch the protective material to the chassis or circuit assembly into which the device will be installed. Minimize body motions when handling unpackaged replacement devices. Simple motions such as your clothes brushing together or lifting a foot from a carpeted floor can generate enough static electricity to damage a static sensitive device Handle IC's and EPROM's carefully to avoid bending pins. Pay attention to the direction of parts when mounting or inserting them on Printed Circuit Boards (PCB's).
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Precautions
Service Safety Summary
General Guidelines
Note The material presented here is intended as a safety reminder for qualified service personnel. Refer also to the preceding Power Safety Precautions. Avoid servicing alone: Do not perform internal service or adjustment of this product unless another person capable of rendering first aid or resuscitation is present. Use care when servicing with power: Dangerous voltages may exist at several points in this product. To avoid personal injury, do not touch exposed connections and components while power is on. Disconnect power before removing the power supply shield or replacing components. Do not wear jewelry: Remove jewelry prior to servicing. Rings, necklaces and other metallic objects could come into contact with dangerous voltages and currents. Power source: This product is intended to operate from a power source that will not apply more then 264 volts rms for a 220 volt AC outlet or 140 volts rms for a 110 volt AC outlet between the supply conductors or between either supply conductor and ground. A protective ground connection by way of the grounding conductor in the power cord is essential for safe operation.
Warning Labels
Read and obey all posted warning labels. Warning labels are displayed on potentially dangerous printer components. As you service the printer, check to make certain that all warning labels remain in place.
Safety Interlocks
Make sure all covers and the products's front panel are in place and all interlock switches are functioning correctly after you have completed a unit service call. If you bypass an interlock switch during a service call, use extreme caution when working on or around the product.
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Precautions
Servicing Electrical Components
Before starting any service procedure, switch off the product power and unplug the power cord from the wall outlet. If you must service the unit with power applied, be aware of the potential for electrical shock. Warning Turning the power off by using the On/Off switch does not completely de-energize the unit. You must also disconnect the unit's power cord from the AC outlet. Position the power cord so that it is easily accessible during servicing. Warning Do not touch any electrical component unless you are instructed to do so by a service procedure.
S7300-02
Servicing Mechanical Components
When servicing mechanical components within the unit, manually rotate drive assemblies, rollers, and gears. Warning Do not try to manually rotate or manually stop the drive assemblies while any unit drive motor is running.
S7300-03
Servicing Fuser Components
Warning This product uses heat to fuse the toner image to media. The Fuser Assembly is VERY HOT. Turn the unit power off and wait at least 5 minutes for the Fuser to cool before you attempt to service the Fuser Assembly or adjacent components.
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Reference Information
2
1 2
2. Reference Information
This chapter provides reference information for this service manual consisting of the tool list, a list of acronyms and abbreviations, and examples of test patterns.
2.1 Tool for Troubleshooting
The following tools are recommended for perfomance of the troubleshooting functions described in this service manual.
DVM(Digital Volt Meter)
Standard: Indicates more than 3 digits.
4
Cotton Swab
Standard : For general home use, for medical service.
5
Tweezers
Standard: For general home use, small type.
Cleaning Equipment IPA (Isopropyl Alcohol) dry cloth or a liquid neutral detergent.
6 3
Driver
Standard : "-" type, "+" type (M3 long, M3 short, M2 long, M2 short).
Software(Driver) installation CD ROM
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Reference Information
2.2 Acronyms and Abbreviations
The table below explains the acronyms and abbreviations used in this service manual. These are used throughout the text of this service manual. Please refer to the table.
AC ADF ASIC ASSY BIOS CCD CMOS CN CON CPU dB dbA dBM DC DCU DPI DRAM DVM ECP
Alternating Current Automatic Document Feeder Application Specific Integrated Circuit assembly Basic Input Output System Charge Coupled Device Complementary Metal Oxide Semiconductor connector connector Central Processing Unit decibel decibelampere decibel milliwatt direct current Diagnostic Control Unit Dot Per Inch Dynamic Random Access Memory Digital Voltmeter Enhanced Capability Port
IDE IEEE IPA IPM Kg LAN lb LBP LCD LED LSU MB MHz NVRAM OPC PBA PCL PDL PPM PTL Q'ty RAM ROM SCF SMPS SPGP SPL Spool SW Sync USB
Intelligent Drive electronics or Imbedded Drive Electronics Institute of Electrical and Electronics Engineers. Inc Isopropy Alcohol Images Per Minute Kilogram local area network pound(s) Laser Beam Printer Liquid Crystal Display Light Emitting Diode Laser Scanning Unit Megabyte Megahertz Nonvolatile random access memory Organic Photo Conductor Printed Board Assembly Printer Command Language , Printer Control Language Page Discription Language Page Per Minute Pre-Transfer Lamp Quantity Random Access Memory Read Only Memory Second Cassette Feeder Switching Mode Power Supply Samsung Printer Graphic Processor Samsung Printer Language Simultaneous Peripheral Operation Online Switch Synchronous or synchronization Universal Serial Bus
EEPROM Electronically Erasable Programmable Read Only Memory EMI EP EPP F/W GDI GND HBP HDD HV HVPS I/F I/O IC Electro Magnetic Interference electrophotographic Enhanced Parallel Port firmware graphics device interface ground Host Based Printing Hard Disk Drive high voltage High Voltage Power Supply interface Input and Output integrated circuit
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Reference Information
2.3 The Sample Test Patterns
The following test patterns are the standard patterns used to test the product in the factory. Cartridge life span and printing speed are measured with the patterns shown below. (The picture in the manual is 70% size of the actual A4 size.)
2.3.1 A4 5% Pattern
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Reference Information
2.3.2 A4 2% Pattern
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Reference Information
2.3.3 A4 IDC 5% Pattern
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Specifications
3
3. Specifications
Specifications are correct at the time of printing. Product specifications are subject to change without notice. See below for product specifications.
3.1 General Specifications
Items Major Features Size (W*D*H) Weight LCD I/O Interface Power Consumption Power Switch Noise Warm Up Approval Device Memory Internal N/W Connectivity Descriptions Copier, Print, Scan, Fax 474 X 436 X 417 mm 13 Kg (28.8 lbs) 16*2 Char USB1.1 & IEEE1284 350W 20W Yes 55 dBA 35 dBA Less than 42 seconds Class B 16 MB (Printer : 8M, Fax : 4M, Scan : 2M, System : 2M) N/A Remarks With ADF w/o Hand Set With Toner Cartridge
Printing Sleep Mode Operating Standby
3.2 Print Specification
Items Print Speed Print Method Print Language Power Save Resolution Toner Save Memory FPOT Printable Area Toner Save Descriptions 17ppm(Letter) 16pp,(A4) Laser Scanning Unit + Electro Photography SPL Yes(5/10/15/30/45min.) 600 *600dpi No Yes 8 MB Approx. 12 seconds Less than 54 seconds 208 X 271 mm (Letter) 202 X 289 mm (A4) Yes Remarks 5% Character Pattern
Normal RET
Stand by Power Save
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3.3 Scan Specification
Items Halftone(Gray Scale) Scan Method Scan Speed ADF (seconds/scan) Platen ADF Platen ADF Platen Resolution Optical Enhanced Halftone Scan Width Width Length(Adf) Length(Platen) Scan-to Descriptions 256 level Color CCD Letter : 25 sec, A4 : 28 sec Letter : 25 sec, A4 : 28 sec Letter : 55 sec, A4 : 60 sec Letter : 55 sec, A4 : 60 sec Letter : 125 sec, A4 : 130 sec Letter : 125 sec, A4 : 130 sec 600 dpi 4800 dpi 256 level Max.216mm (8.5") Max. 356mm (14.0") Max. 297mm (11.7") E-mail, Image, OCR, FAX, WEB Remarks ITU-T #1 Chart Text/Mixed Mode : B/W & 300dpi. (USB) Photo Mode : Gray & 300dpi. (USB) Photo Mode : Color & 300dpi.(USB)
From SmarThru3
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Specifications
3.4 Copy Specification
Items Copy Quality Selection or Original Image type selection Mode FCOT Descriptions Text Auto Photo Other Platen ADF Copy Speed Text Mixed Photo Resolution Scan Print 600x300dpi 600x300dpi 600x600dpi for Platen / 600x300dpi for ADF Power Save Approx. 54 seconds Stand by Approx. 12 seconds Power Save Approx. 54 seconds Stand by Approx. 17 seconds SDMC 16 cpm/A4, 17 cpm/LTR MDMC 7 cpm/A4, 7 cpm/LTR SDMC 16 cpm/A4, 17 cpm/LTR MDMC 7 cpm/A4, 7 cpm/LTR 600*600dpi 600*600dpi 25% to 400 % for platen, 25% to 100% for ADF 1~99 Yes 3 level(by LED) TEXT/MIXED/PHOTO Yes(300dpi only) Yes(after 1 minute) 2-up, 4-up Yes Yes Yes Remarks
Zoom Range Multi Copy Preset Contrast Control Copy Mode Collation Copy Auto return to default mode N-up copy AutoFit Copy Clone Poster
ADF Only Platen Only Platen Only Platen Only
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Specifications
3.5 Telephone Specification
Items Handset On hook Dial Search 1-Touch Dial Auto dial TAD I/F Tone/Pulse Pause Auto Redial Last Number Redial Distinctive Ring Caller ID External Phone Interface Report & List Print out Tx/Rx Journal Confirmation Help List Auto Dial List System Data List Ring Volume Key Volume Speaker Descriptions No Yes Yes (Phone Book) 10EA (3*4 Numeric Key) 100 locations (Using 3*4 buttons) No Selectable in Tech Mode Yes Yes Yes No No No Yes 2 types available (with Image TCR, w/o image TCR) No Yes List all user setting Yes(Off,Low,MED,HIGH) Yes(On,Off) Yes(On,Off) Remarks
by using Phone Book Button
Sound Control
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Specifications
3.6 Fax Specification
Items Compatibility Communication System Modem Speed TX Speed Compression ECM Resolution Std Fine S.Fine Scan Speed(ADF) Std Fine S.Fine Rx fax duplex print out Multiple page scan speed Receive Mode Memory Capacity Optional Memory Max locations to store to 1 Group Dial Fax Forward Broadcasting Forced Memory TX Cover page Delayed fax Memory RX Functions Voice Request TTI RTI Polling Earth/Recall Auto Reduction RDC Junk Fax barrier Security Mode Battery Backup Descriptions ITU-T G3 PSTN/PABX 33.6 Kbps Approx. 3 sec MH/MR/MMR/JPEG Yes 203 x 98 dpi 203 x 196 dpi 300 x 300 dpi Approx. 5sec/LTR (6 sec/A4) Approx.7.5sec/LTR (8 sec/A4) Approx.7.5sec/LTR (8 sec/A4) No Approx. 7 ppm/LTR (7.5 ppm/A4) Fax, TEL 4 MB (320 pages) No 99 locations Yes (On/Off) Up to 99 locations No No Yes Yes No Yes Yes No No Yes No Yes Yes Yes (Min. 15 minutes) Remarks
Not Battery (Using Super Cap.)
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Specifications
3.7 Paper Handling
Capacity (20lbs) Optional Cassette Output Capacity Output Control Paper Size Items Main Tray Bypass Descriptions 250sheets Single Sheet No 150Sheets/20lb, 1Sheet/Face up Face down/Face up CST : A4,Letter,Legal, Folio,Executive,B5 Bypass : Envelope6 3/4,7 3/4, #9, #10, DL,C5,B5 60 ~ 90 GSM / 16 ~ 24 lb. 60 ~ 150 GSM / 16 ~ 40 lb. Bottom to Middle Front (FIFO) Face up, Single Sheet 216 x 356mm(8.5"x14") 76 x 127mm(3"x5") Extension Fixed Adjustable Universal Adjustable 60 ~ 105 GSM / 12.5~28lb 30 sheets(80 GSM / 20lb) 148mm - 216mm(5.8" - 8.5") 127 mm - 356mm(5" - 14.0") Remarks
Main Tray Bypass Main Tray Bypass Standard output Straight Through Max Min Paper Document Bypass Tray Main Tray Document Paper Weight Capacity Document Size Width Document Size Length
Paper Weight Paper Path Paper Size Output Stacker Input Guide
ADF
3.8 Software
Compatibility Items DOS Win 3.x Win 95 Win 98&WinME Win NT 4.0 Win 2000 Win XP Mac Linux Printer TWAIN PC-FAX Descriptions No No Yes Yes Yes Yes Yes Yes No SPL(GDI) Yes No Remarks
WHQL for Printer Only Mac Printer Only
Driver
PC Fax is only available through PC Modem
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Specifications
3.9 Consumables
Items Type How to install Toner Level Sensor Toner Count Descriptions Single Cartridge Front door open and front loading Initial 2,000 sheets running 3,500 sheets No Yes Remarks
Life
IDC 5% character printing
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Summary of product
4
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
Document Guides
Automatic Document Feeder
Document Cover
Document Input Tray
Document Glass Document Output Tray Control Panel
Front Cover Paper Output Extension Paper Tray Bypass Tray Paper Level Indicator
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4.1.2 Rear View
Rear Cover
Rear Output Slot (Face up)
Power Switch AC Power Cord Connector
Parallel Connector USB Connector
Telephone Line Connector
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Summary of product
4.1.3 Control Panel
1
2
3
4
5
6
Adjusts the brightness of the documents for the current copy job.
Selects the document type for the current copy job.
1
C O P Y Allows you to use special copy features, such as Clone, Collation, Auto fit, 2-side, N-up (multiple pages on a sheet) and Poster copying. Makes a copy smaller or larger than the original.
Selects the number of copies.
Displays the current status and prompts during an operation.
2
Turns on when the toner cartridge is empty.
Scrolls through the options available for the selected menu item.
Confirms the selection on the display.
Enters Menu Mode and scrolls through the menus available.
3
Sends you back to the upper menu level.
Stops an operation at any time. In Standby Mode, clears/cancels the copy options, such as the contrast, the image setting, the copy size and the number of copies. Starts a job.
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Summary of Product
Dials a number or enters alphanumeric characters.
4
Adjusts the resolution of the documents for the current fax job.
Allows you to send a fax to multiple destinations.
5
F A X Allows you to store frequently-dialed fax numbers using a one or two-digit speed dial or group number for automatic dialing and edits the stored numbers. Allows you to print a Phonebook list. Redials the last number in Standby Mode or inserts a pause into a fax number in edit mode. Engages the telephone line.
6
S A V E
Allows you to save on toner by using less toner to print a document.
Allows you to save on call costs by sending a fax at a preset toll-saving time. Using this feature, you can take advantage of lower long distance rates at night, for example.
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Summary of product
4.2 System Layout
4.2.1 Feeding section
Paper for the machine is supplied from a universal cassette or from the manual feeder, for single sheet feeding. The cassette contains a friction pad, to separate the paper and prevent multi-sheet feeding. There is a sensor to detect the presence of paper in the cassette. - Feeding Method: Universal Cassette Type - Feeding Standard: Center Loading - Feeding Capacity: Cassette-250 sheets (80g/m2, 20lb paper standard) Manual 1 sheet (Paper, OHP, Envelope, etc.) - Paper detecting sensor: Photo sensor - Paper size sensor: None
4.2.2 Transfer Ass'y
The Transfer Ass'y consists of the PTL (pre-transfer lamp), OPC Drum, and the Transfer Roller. The PTL lights the surface of the OPC Drum, reducing the charge on the drum surface to improve transfer efficiency. The Transfer Roller transfers toner from the OPC Drum surface to the paper. - Life span: 60,000 sheets (in 15~30°C)
4.2.3 Drive Ass'y
The Drive Ass'y is a motor driven gear unit, that drives the paper feed, the Fuser, and the distributing unit.
4.2.4 Fuser
The Fuser consists of the Heat Lamp, Heat Roller, Pressure Roller, Thermistor, and Thermostat. It melts the toner to the paper using pressure and heat to complete the printing job.
4.2.4.1 Thermostat
The thermostat is a temperature-sensing device, that cuts off the power to prevent overheating or a fire when the heat lamp or the heat coil of the heat roller becomes too hot.
4.2.4.2 Thermistor
The Thermistor detects the surface temperature of the heat roller. The information from the Thermistor provides the on/off control that maintains the selected temperature of the heat roller.
4.2.4.3 Heat Roller
The heat roller transfers the heat from the heat lamp coil to the surface of the paper. The melted toner cannot stick to the Teflon coated heat roller.
4.2.4.4 Pressure roller
The pressure roller mounted right under the heat roller is made of the silicon resin. The toner fuses onto the paper when it passes between the heat roller and the pressure roller.
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Summary of Product
4.2.4.5 Safety Relevant Facts
· Protecting device when overheating - 1st protecting device: H/W cuts off when an overheat condition is detected. - 2nd protecting device: S/W cuts off when an overheat condition is detected. - 3rd protecting device: Thermostat cuts off the power. · Safety device - The power to the fuser is cut off when the front cover is open. - The overheating safety device for customer safety. - Maintains the surface temperature of the Fuser Cover below 80°C. A customer caution label is attached on the inside of the rear cover.
4.2.5 Scanner
Uses a photosensitive device to read an image. The Scanner consists of a CCD module, Connection board, ADF board, AFE (Analog Front End), Image Processor (located in the CPU), platen glass, and ADF.
· CCD Module Specification
1.Resolution: 600dpi/A4 2.Maximum scan wide: 8.5" 3.Color filter: Red, Green, Blue 4.Output channel: 3 channels (R, G, B) 5.Effective pixel: 5,400 pixel *3 6.Voltage: 24V & 5V 7.Pre-heating time: Maximum 30 seconds (70% of light reach to it) 8.The life span of a lamp: 30,000 hours (25oC)
· Image Processor Specification
1.Operating frequency: 66 MHz 2.Image sensor interface: 200/300/600 dpi CIS or CCD 3.Line time: Copy, FAX, Binary (Lineart, Halftone) PC Scan: 1.5ms/Line Color PC Scan (Grey, 256 Color, True Color): 4.5ms/Line 4.A/D conversion: 10bit conversion
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Summary of product
4.2.6 LSU (Laser Scanner Unit)
The LSU is controlled by the video controller. It converts the received video data to pulsed laser light that is scanned onto the surface the OPC drum using a rotating polygon mirror. This creates the latent image on the drum surface. The OPC drum rotates at the same speed as the paper is fed. When the edge of the polygon mirror is detected, the LSU generates the /HSYNC signal. The CPU syncs the left margin of the image to this signal. After detecting the /HSYNC signal, the image data is sent to the LSU to begin transfer of the image left margin to the paper. Each surface of the polygon mirror provides one line for scanning.
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Summary of Product
4.2.7 Toner Cartridge
The xerographic process creates a visual image from the latent image. The Toner Cartridge contains the OPC Drum, developer, and toner components in one unit. The OPC unit contains the OPC drum and charging roller. The developer unit contains 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: 3,000 sheets (IDC Pattern/A4 standard) - Toner remaining amount detecting sensor: None - OPC Cleaning: Collect the toner by using electric charge + FILM OPC - Management of excess toner: Collect the toner by using electric charge (Cleanerless Type- No excess toner) - OPC Drum protecting Shutter: None - Classifying device for toner cartridge: ID is classified by interruption of the frame channel.
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Summary of product
4.3 Main PBA
The Main PBA is the functional center of the product. It controls all basic machine operations including fax, scan, and printer operations, sensor detection, and power levels.
SDRAM
FLASH MEMORY
MODEM
74LVX161284
ASIC
SUPER1284
BUFFER
(INVERTER)
EXPANSION I/O
(HCT273)
MODEM CLOCK
MOTOR DRIVE IC
CN13 U41 U10
U11 U41 CN14
U16
U63
OSC2
U64 U15 U9 U58
U48
U43/ U68
U44/ U69 CN1 CN2
U47 OSC3 U74
CN4 U75/ U95/ U123 CN10 U115 CN8 CN7 CN9 U118 U113/U114 OSC5
CN12
CN3
CN5
U125
U135
U134
U68
CN6
U120
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Summary of Product
4.3.1 ASIC
Samsung's S3C46Q0X 16/32-bit RISC micro controller is designed to provide a cost-effective, low power, small die size and high performance micro-controller solution for MFP. The S3C46Q0X is developed using ARM7TDMI core, 0.18(m CMOS standard cell, and memory cell.
·Main function block
· 1.8V internal, 3.3V external (I/O boundary) microprocessor with 4KByte Cache · Image Processor · On-chip clock generator with PLL · Memory & External Bank Control · DMA Control (5-channel) · Interrupt Control · 2-port USB Host /1- port USB Device (ver 1.1) Interface Control · Parallel Port Interface Control · UART (2 Channel) · Synchronous Serial Interface Control · Timer (4 Channel) · Watch Dog Timer · Power control: Normal, Slow, Idle, Stop and SL_IDLE mode · A/D Converter (10-bit, 2 Channel) · General I/O Port Control · Print Head Control · Carrier Motor Control · Paper Motor Control · Tone Generator · RTC with calendar function · S/W Assistant function( Rotator )
4.3.2 Flash Memory
The Flash Memory stores the system program and downloads the system program through the PC interface. · Capacity : 0.5 M Byte · Access Time : 70 nsec
4.3.3 SDRAM
The SDRAM is used as a buffer, system working memory area, etc. while printing. · Access Time : 60 nsec
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4.3.4 Sensor input circuit
1) Paper Empty Sensor
The Paper empty sensor (Photo Interrupter) on the engine board notifies the CPU when the cassette is empty. The empty signal to the CPU sets the D0 Bit in the CPU, which results in the CPU turning on the second LED (yellow) on the front panel.
2) MP Sensing
The MP Sensor (Photo Interrupter) on the engine board notifies the CPU if there is paper present at the MP. It reads the D0 Bit of the CPU to recognize paper in MP, and the paper is fed from MP if present.
3) Paper Feeding
When paper passes the actuator (Feed Sensor), the circuit detects the signal from the photo interrupter, sends a status signal to the CPU, and enables image data after a certain delay. If it doesn't detect the feed sensor within 1 sec. after paper is fed, paper Jam0 occurs (Red and Yellow LEDs will be turned on at the Front Panel ). Developer insertion is detected using the same principle. When the developer is mounted, it operates the actuator and the signal from the photo interrupter is detected by the sensor input circuit. That process is called developer ID sensing.
4) Paper Exit Sensing
The system detects the paper exiting the unit with the exit sensor and actuator attached to the frame. The circuit detects the on/off time of the exit sensor, and the normal operation or jam information is passed to the CPU. If exit is not detected, JAM2 occurs.
5) Cover Open Sensing
The Cover Open sensor is located on the front cover. When the front cover is opened, +24V to the DC fan, solenoid, main motor, polygon motor in the LSU, and HVPS is cut off. The cover-open sensing is read from the D0 bit of CPU, and initiates developer ID sensing.
6) DC FAN / SOLENOID Driving
This function is driven by a transistor and controlled by the D6 bit of the CPU. When the bit is high, the fan is driven by turning on the transistor, and it is off when the sleep mode is selected. There are two solenoids, and they are driven by the paper pick-up and MP signal. The drive time is 300ms. The diode protects the driving transistor from the noise pulse, which is emitted when the solenoid is de-energizing.
7) Motor Driving
The motor driving circuit is formed when the Driver IC is selected. The A3977 (Motor driver IC) is used in this case. The resistance Rs value of sensing and the voltage value of the V reference can be changed by the motor driving voltage value.
WorkCentre PE16
Service Manual 4-11 July 2003
Summary of Product
4.4 SMPS & HVPS
The SMPS supplies DC power to the system. The supply receives 110V/220V input, and outputs 5V, 12V, and 24V to supply the power to the main board and ADF board. The HVPS creates the high voltage for THV/MHV/Supply/Dev and supplies it to the developer to be used in optimizing the image display. The HVPS uses the 24V as an input and outputs the high voltage for THV/MHV/BIAS, toner, OPC cartridge, and transfer roller.
COVER OPEN SWITCH
DEV
PAPER-EMPTY SENSOR
MANUAL SENSOR
FEED SENSOR
SUPPLY
MHV OPC
F2 110V : 125V/3A 220V : 250V 2A H
CN3 (FAN CON.)
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F1 110V : 125V/8A 220V : 250V T 5A H
CN1 (H/L CON.)
EXIT SENSOR
MAIN PBA CON.
F101 250V L2A
THV
WorkCentre PE16
Summary of product
4.4.1 HVPS (High Voltage Power Supply)
1) Transfer High Voltage (THV+)
- Function : Voltage to transfer developed toner image on OPC drum to paper. - Output voltage : +1300V DC±20V - Error : If THV (+) doesn't output, a ghost (same character is printed after one cycle (76mm) of OPC) with low density occurs due to toner on OPC drum not transferring normally to media.
2) Charge Voltage (MHV)
- Function : Charges entire surface of OPC with -900V ~ -1000V. - Output voltage : -1550V DC ± 50V - Error : If MHV doesn't output, solid black print out occurs because toner on developing roller moves to OPC drum due to the surface of OPC not being charged.
3)Cleaning Voltage (THV-)
- Function : Removes excess toner on transfer roller surface by negative voltage on OPC drum to recover toners. - Output Voltage : +300V/-150V - Error : Toner contamination occurs at the backside of a printed-paper.
4) Developing Voltage (DEV)
- Function: Develops a toner image using a difference of electronic potential between the part of the OPC drum exposed by the LSU and the part not exposed. * Generally, the electronic potential of exposed OPC is -180V and exposed developer is -350V when printing, so toner with minus (-) is developed on an exposed part. - Output voltage: -430V DC ± 20V - Error: 1. If DEV is GND, density is reduced significantly. 2. If DEV is floating due to poor ground contact, etc., density is increased significantly.
5) Supply Voltage (SUP)
- Function: Voltage to supply toner to developing roller. - Output voltage: : -630V DC ± 50V (Use ZENER, DEV Gear) - Error: 1. If SUP is GND, a density is reduced significantly. 2. If SUP is floating due to poor ground contact, etc., density drops to to almost non-existant levels.
WorkCentre PE16
Service Manual 4-13 July 2003
Summary of Product
4.4.2 SMPS (Switching Mode Power Supply)
This is the power source for the whole system. It is an independent module, so it can be used for common use. It is mounted at the bottom of the set. The module contains the SMPS, which supplies the DC power for driving the system, and the AC heater control, which supplies the power to the Fuser. The SMPS has four outputs (+5V, +12V, +12V, and +24Vs). There are three kinds of power, 120V exclusive (America), 220V exclusive (Europe), and 220V for China (nations with unstable power supply).
1) AC Input
- Input rated voltage : AC 220V ~ 240V AC 100~127V - Input voltage range : AC 198V ~ 264V AC 90V ~ 135V - Rated frequency : 50/60 Hz - Frequency range : 47 ~ 63 Hz - Input voltage : Under 4.0 Arms/2.0 Arms (The state when lamp is off or rated voltage is input/output)
2) Rated Power Output
NO 1 2 Item Channel name CONNECTOR PIN CH1 +5V CON 2 3.3V PIN: 3, 4 GND PIN: 5, 6 +5V ± 5% (4.75 ~ 5.25V) 1.0 A 150mVp-p 7.5W CH2 +12V CON2 5V PIN : 8 GND PIN: 7 +12V ± 5% (11.4 ~ 12..6V) 0.05A 150mVp-p 0.6W CH3 +24.0V CON2 24V PIN: 13, 16 GND : 9, 10 +24V ± 10% (21.6 ~ 26.4V) 1 0A 500mVp-p 36.0W CH4 +24.0VS CON2 24V PIN: 11, 12 GND : 18 +24V ± 10% (21.6 ~ 26.4V) 0.5 500mVp-p 24.0W
3 4 5 6
Rated outputting voltage Rated outputting current Ripple noise voltage Maximum output
3) Consumption Power
NO 1 2 3 Item Stand-By PRINTING Sleep-Mode CH1 (+5V) 1.0 A 1.5 A 0.3A CH2 (+12V) 0.05A 0.5A 0.0A CH3 (+24V) 1.0 A 1.5 A 0.0A CH3 (+24VS) 0.5 A 1.0 A 0.06A System AVG : 95 Wh AVG : 350 Wh AVG : 20 Wh
4) Length of Power Cord : 1830 ± 50mm 5) Power Switch : Use
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Summary of product
6) Feature
Insulating resistance : over 50M (at 500 VDC ) Insulating revisiting pressure : Must be no problem within 1 min. (at 1500 Vzc, 10 mA) Leaking voltage : under 3.5mA Running voltage : under 40 A peak (at 25°c, Cold start) Under 60 A peak (in other conditions) Rising Time : Within 2 Sec. Falling Time : Over 20 mSec. Surge : Ring Wave 6 KV-500 A (Normal, Common)
7) Environment Condition
Operating temperature range : 0°c ~ 40°c Maintaining temperature range : -25°c ~ 85°c Maintaining humid range : 30% ~ 90% RH Operating atmospheric pressure range : 1
8) EMI Requirement : CISPR ,FCC, CE, MIC, C-Tick, 9) Safety Requirement
- IEC950, C-UL, TUV, Semko, iK, CB, CCC, EPA,
4.4.3 Fuser AC Power Control
Fuser (HEAT LAMP) gets heat from AC power. The AC power controls the switch with the Triac, a semiconductor switch. The 'On/Off control' is operated when the gate of the Triac is turned On/Off by Photo Triac (insulting part). In the other words, the AC control is a passive circuit, so it turns the heater On/Off using a signal from the Engine Control. When the 'HEATER ON' signal is turned on at Engine Control, the LED of PC1 (Photo Triac) turns on. The blinking light, the Triac part (light receiving part) takes the voltage, and the voltage is supplied to the gate of Triac and flows into the Triac. As a result, the AC current flows in the heat lamp, supplying heat to the heat roller. On the other hand, when the signal is off, the PC1 is off, the voltage is cut off at the gate of Triac, the Triac remains off, and the heat lamp is turned off.
1) Triac (THY1) feature
- 12A,600V SWITCHING
2) Phototriac Coupler (PC3)
- Turn On If Current : 15mA ~ 50mA(Design: 16mA) - High Repetitive Peak Off State Voltage : Min 600V
WorkCentre PE16
Service Manual 4-15 July 2003
Summary of Product
4.5 Engine F/W
4.5.1 Feeding
If feeding from the cassette, the pickup roller drive is controlled by the solenoid. The solenoid is switched on and off by contro signals from either the general output port or the external output port. If feeding from the manual feeder, paper presence is sensed by the manual sensor, and paper is fed by driving the main motor, insert the paper in front of the feed sensor. While paper moves, occurrence of jam is judged as below. (Refer to 6.2 Clearing Paper Jams])
4.5.1.1 Jam 0
· Paper is picked up, but cannot enter path due to paper feed failure. · Paper is picked up and enters path, but it cannot reach the feed sensor in specified time due to slip, etc. · After pick up, if the feed sensor is not on, pick up is repeated. After repeating pick up, if the feed sensor is still not on after the specified time, Jam 0 is set. - Jam 0 status indicates that the leading edge of the paper doesn't pass the feed sensor. · Even though the paper reaches the feed sensor, the feed sensor doesn't turn on. - It is a status that the leading edge of the paper already passes the feed sensor.
4.5.1.2 Jam 1
· After the leading edge of the paper passes the feed sensor, the trailing edge of the paper does not pass the feed sensor after the specified time. (The feed sensor cannot be Off) · After the leading edge of the paper passes the feed sensor, the paper does not pass the exit sensor after the specified time. (The exit sensor cannot be On) - The paper remains between the feed sensor and the exit sensor.
4.5.1.3 Jam 2
· After the trailing edge of the paper passes the feed sensor, the paper does not pass the exit sensor after the specified time.
4.5.2 Drive
By gearing, the main motor drives the rollers such as feeding roller, developing roller, fuser roller, and distributing roller. The step motor is controlled for the sections, acceleration section and fixed speed section. In the initial stage of the motor run, appoint the acceleration section to prevent the isolation of the motor. It is controlled by the A3977 motor driver IC. The step signal and the enable signal are sent to make the phase for driving the motor in CPU.
4.5.3 Transfer
The charging voltage, developing voltage and the transfer voltage are controlled by PWM (Pulse Width Modulation). Each output voltage is changeable due to the PWM duty. The transfer voltage admitted when the paper passes the transfer roller is decided by environment recognition. The resistance value of the transfer roller is changed due to the surrounding environment or the environment of the set, and the voltage value, which changes due to the environments, is changed through AD converter. The voltage value for impressing to the transfer roller is decided by the changed value.
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Summary of product
4.5.4 Fusing
The temperature of the heat roller's surface is changed due to the resistance value of the thermistor. By converting the voltage value to a digital value, through the AD converter, the temperature is selected. The AC power is controlled by comparing the target temperature to the value from the thermistor. If the value from the thermistor is out of the controlling range while controlling the fusing, the error stated in the table occurs.
4.5.4.1 Error Type
Error Open heat error Lower heat error Description When warming up, it has been lower than 68 °C over 25 sec · Standby: It has been lower than 100°C over 25 sec · Printing: - 2 consecutive pages: it has been lower than 145°C over 5 sec - 3 consecutive page; it has been 40°C lower than the fixed fusing temperature over 4 seconds. It has been higher than 220°C over 3 seconds
Over heat error
4.5.5 LSU
The LSU is consists of the LD (Laser Diode) and the polygon motor control. When the printing signal occurs, it turns on the LD and drives the polygon motor. When the light sensor detects the beam, Hsync occurs. When the polygon motor reaches normal speed, LReady occurs. If the two conditions are satisfied, the status bit of the LSU controller register becomes 1, the LSU is ready. If the two conditions are not satisfied, the error shown in the table below occurs.
Error Polygon motor error Hsync error
Description When the polygon motor does not reach normal speed The polygon motor speed is normal, but the Hsync signal is not created.
WorkCentre PE16
Service Manual 4-17 July 2003
Summary of Product
4.6 LIU PBA
LIU board is a Line interface unit, and it is a circuit for interfacing a telephone line with a modem. The circuit consists of matching transfer to conform to impedance of a receiving telephone line and a circuit to conform to impedance of a modem. Also, there is a ring detect circuit to detect a ring signal from a switchboard and a surge absorber to protect it from an external high voltage supply applied to a line input unit.
Ring Detect Circuit (PC814)
Relay
Tel-Line Jack Surge Absorber
4.7 OPE PBA
OPE board consists of various function keys and LCDs to display key operations. MICOM creates a circuit using HT48R50 MICOM of HOLTEC CO. and applies LED and LCD. The communication method with the Main Board CPU is a UART, and related signals are /Reset, TXD, and RXD.
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Disassembly and Reassembly
5
5. Disassembly and Reassembly
5.1 General Precautions on Disassembly
Releasing Plastic Latches
Many of the parts are held in place with plastic latches. The latches break easily; release them carefully. To remove such parts, press the hook end of the latch away from the part to which it is latched.
When you disassemble and reassemble components, you must use extreme caution. The close proximity of cables to moving parts makes proper routing essential. If components are removed, any cables disturbed by the procedure must be restored as close as possible to their original positions. Before removing any component from the machine, note the cable routing that will be affected.
Whenever servicing the machine, you must perform the following:
1. Check to verify that documents are not stored in memory. 2. Be sure to remove the toner cartridge before you disassemble parts. 3. Unplug the power cord. 4. Use a flat and clean surface. 5. Replace only with authorized components. 6. Do not force plastic-material components. 7. Make sure all components are in their proper position. 8. Observe ESD precautions when handling sensitive electronic components.
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Service Manual July 2003
5-1
Disassembly and Reassembly
5.2 Rear Cover
1. Remove the four screws securing the Rear Cover. 3. Unlatch the (Cover Face Up) securing the Rear cover, as shown below.Then lift the (Cover Face Up) out.
Cover Face Up
2. Remove the Rear Cover from the Frame Ass'y and Scanner Ass'y.
Rear Cover
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Disassembly and Reassembly
5.3 Side Cover (LH, RH)
1. Before you remove the Side Cover (LH, RH), you should remove: - Rear Cover (see page 5-2) 3. Pull down and back on the LH and RH Side Covers and lift them out in the direction of the arrows.
2. Unplug the Speaker Harness, as shown below.
Side Cover(LH)
Speaker Harness
Side Cover(RH)
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Service Manual July 2003
5-3
Disassembly and Reassembly
5.4 Front Cover
1. Take out the Cassette. 3. Unlatch the Front Cover securing the Frame Ass'y. Then remove the Front Cover, as shown below.
Cassette
Front Cover
2. Open the Front Cover.
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Disassembly and Reassembly
5.5 Scanner Ass'y
1. Before you remove the Scanner Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) 4. Pull up the Scanner Ass'y, as shown below.
Scanner Ass'y
2. Remove the two screws securing the Scanner Ass'y, as shown below.
3. Unplug the four connectors from the Connector PBA , as shown below, and remove the ground wire.
5. Disconnect the cover wiring harness then pull the Platen Cover upward and remove it.
Connection Board
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Service Manual July 2003
5-5
Disassembly and Reassembly
6. Remove the three screws securing the Scan Ass'y. This can be done with the scanner attached.
8. Remove the four screws securing the Scan Upper.
7. Lift the OPE Unit out. Then unplug the two connectors from the OPE Unit and remove it.
9. Unlatch the Scan Upper securing the Scan Ass'y Then pull the Scan Upper upward and remove it.
Scan Upper
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Disassembly and Reassembly
10. Disconnect the CCD Ass'y end of the CCD Cable.
12. Pull up the CCD Shaft and take out the Scanner Module.
Scanner Module
CCD Cable
CCD Shaft
Belt Holder
11. Push the Belt Holder and take out the Belt, as shown below.
Belt
WorkCentre PE16
Service Manual July 2003
5-7
Disassembly and Reassembly
14. Remove the two screws and take out the Motor Bracket.
16. Unlatch the Open Sensor and remove it, as shown below.
Motor Bracket
Open Sensor
15. Unplug the one connector from the Open Sensor Ass'y.
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Disassembly and Reassembly
5.6 ADF Motor Ass'y
1. Before you remove the ADF Motor Ass'y, you should remove: - Four screws securing the Tray and remove the Tray - Two screws securing the ADF Ass'y - Wiring harness from cover 2. Remove the ADF Ass'y.
Upper Cover
ADF Ass'y
5. Remove the two screws securing the Upper Cover and remove it, as shown below.
Release Tabs
3. Remove the Open Cover, as shown below.
Open Cover
6. Unplug the one connector and remove four screws and one ground screw securing the ADF Motor Ass'y. Then take out the ADF Motor Ass'y.
ADF Motor Ass'y
ADF Lower Ass'y
4. Pull the White Bush, then rotate it until it reaches the slot, as shown below. Then lift the Pick-Up Ass'y out.
Pick up Ass'y
White Bush
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Service Manual July 2003
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Disassembly and Reassembly
5.7 OPE Unit
1. Remove the seven screws securing the OPE PBA to the OPE Cover. 3. Remove the Key Pad from the OPE Cover.
OPE Cover
OPE PBA
Key Pad
2. Remove the Contact Rubber from the OPE Cover.
Contact Rubber
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Disassembly and Reassembly
5.8 Middle Cover & Exit Roller
1. Before you remove the Exit Roller, you should remove: - Rear Cover (see page 5-2) - Front Cover Ass'y (see page 5-4) - Side Cover (LH, RH) (see page 5-3) - Scanner Ass'y (see page 5-5) 2. Remove the six screws securing the Middle Cover. 4. Remove the two screws securing the Rear-Upper Cover, as shown below
5. Remove the Exit Gear, Bearing and Exit Roller as shown below.
Exit Gear
3. Unlatch the Middle Cover Securing the Frame Ass'y, using a proper tool as shown below. Then lift the Middle Cover out.
Bearing Exit Roller
Middle Cover
1
2
WorkCentre PE16
Service Manual 5-11 July 2003
Disassembly and Reassembly
5.9 Engine Shield Ass'y
1. Before you remove the Engine Shield Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover(LH, RH) (see page 5-3) - Scanner (see page 5-5) 4. Remove the ten screws securing the Engine Shield Ass'y and remove it. Then unplug the all the connectors from the Main PBA and SMPS.
2. Remove the two screws securing and unplug the FPC cable From the Main PBA. Then remove the LIU PBA
LIU PBA
Engine Shield Ass'y
3. Unplug the two connectors.
Fan Connector Thermistor connector
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Disassembly and Reassembly
5.10 Main PBA
1. Before you remove the Main PBA, you should remove: - Engine Shield Ass'y(see page 5-12)
Main PBA
2. Unplug the one connector and remove the five screws securing the Main PBA. Then lift the Main PBA out, as shown.
WorkCentre PE16
Service Manual 5-13 July 2003
Disassembly and Reassembly
5.11 SMPS
1. Before you remove the SMPS, you should remove: - Engine Shield Ass'y(see page 5-12) 4. Remove the three screws securing the SMPS. Then lift the SMPS out, as shown below.
SMPS
2. Remove the three screws securing the Inlet Bracket and remove it
Inlet Bracket
3. Unplug the one connector and remove the one screw securing the Engine Shield.
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Disassembly and Reassembly
5.12 Fuser Ass'y
1. Before you remove the Fuser Ass'y, you should remove: - Rear Cover (see page 5-2) 4. Remove the two screws securing the Halogen Lamp. Then take out the Halogen Lamp from the Heat Roller
Heat Roller
2. Unplug the two connectors from the Main PBA and SMPS, as shown below. Then remove the four screws securing the Fuser Ass'y and remove it.
Fuser Ass'y
Halogen Lamp
5. Remove the one screw securing the Idle Gear and remove it.
Idle Gear
3. Remove the two screws securing the Thermostat. Then lift the Thermostat out
Thermostat
6. Remove the four screws securing the Fuser Cover and remove it, as shown below.
Claw
Fuser Cover
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Service Manual 5-15 July 2003
Disassembly and Reassembly
7. Unwrap the Thermister Harness, as shown below.
8. Remove the one screw securing the Thermister and remove it, as shown below.
Thermister Harness
Thermister
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Disassembly and Reassembly
5.13 Fan
1. Before you remove the Fan, you should remove: - Rear Cover (see page 5-2) - Side Cover (RH) (see page 5-3) 2. Unplug the connector from the SMPS and remove the one screw. Then take out the Fan.
DC Fan
WorkCentre PE16
Service Manual 5-17 July 2003
Disassembly and Reassembly
5.14 LSU
1. Before you remove the LSU, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) - Scanner Ass'y (see page 5-5) - Front Cover (see page 5-4) - Middle Cover (see page 5-11) 3. Remove the three screws securing the LSU and remove it.
LSU
2. Unplug the two connectors.
5.15 Drive Ass'y
1. Before you remove the Drive Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH) (see page 5-3) 3. Take out the Drive Ass'y, then unplug the connector from the Main PBA, as shown below.
2. Remove the six screws securing the Drive Ass'y.
Drive Ass'y
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Disassembly and Reassembly
5.16 Transfer Ass'y
1. Before you remove the Transfer Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) - Scanner Ass'y (see page 5-5) - Front Cover (see page 5-4) - Middle Cover (see page 5-11) - LSU (see page 5-18) 3. Unplug the PTL Holder connector, then remove the PTL Holder and PTL Lens, as shown below.
PTL Lens
PTL Holder
2. Remove the three screws securing the Transfer Earth and remove it.
Transfer Earth
4. Unlatch the Bushing and remove it. Then lift the Transfer Roller out, as shown below.
Transfer Roller Bushing
WorkCentre PE16
Service Manual 5-19 July 2003
Disassembly and Reassembly
5.17 Feed Ass'y
1. Before you remove the Feed Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) - Scanner Ass'y (see page 5-5) - Front Cover (see page 5-4) - Middle Cover (see page 5-11) - Drive Ass'y (see page 5-18) 4. Remove the three screws securing the Feed Bracket and remove it.
Feed Bracket
2. Remove the two screws securing the Guide Paper and remove it.
Guide paper
5. Remove the Idle Gear and Feed Gear2.
Feed Gear2
3. Pull up the Feed Idle Bushing and Feed Idle Shaft, as shown below.
Feed Idle Shaft Bushing
Idle Gear
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Disassembly and Reassembly
6. Remove the Feed Gear1 Ass'y.
7. Pull up the Feed Roller and Feed Roller1.
Feed Roller
Feed Gear1 Ass'y
Feed Roller1
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Service Manual 5-21 July 2003
Disassembly and Reassembly
5.18 Pick-Up Ass'y & Solenoid
1. Before you remove the Pick-Up Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) - Front Cover (see page 5-4) - Scanner Ass'y (see page 5-5) - Middle Cover (see page 5-11) - Engine Shield Ass,y (see page 5-12) - Drive Ass'y (see page 5-18) 4. Take out the Pick-Up Ass'y, as shown below.
2. Remove the three screws securing the Feed Bracket and remove it.
Feed Bracket
Bush 1 2
5. Remove the two screws securing the Manual Solenoid and Pick-Up Solenoid. Then remove Manual Solenoid and Pick-Up Solenoid.
3. Remove the Pick-Up Gear Ass,y.
(Pick up) Solenoid Pick up Gear Ass'y (Manual) Solenoid
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ALIGNMENT & A D J U S T M E N T S
6
6. Alignment and Adjustments
This chapter describes the main functions for service, such as the product maintenance method, the test output related to maintenance and repair, DCU using method, Jam removing method, and so on.
6.1 Paper path
Scanner Part
ADF-Roller Pickup-Roller Doc-Paper(30Sheets)
ADF-Idle Roller
Sensor-Regi Sensor-Doc Exit-Roller Feed-Roller Sensor-Scan Sensor-Scan
White-Sheet
CCD-Module
Engine Part
3
4
Fuser
L S U
CR DR OPC SR
Toner Cartridge
7
PR
2 6
P IC
PTL
TR
FR
8
5 1
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Service Manual June 2003
K /R
6-1
ALIGNMENT & A D J U S T M E N T S
6.1.1 Copy & Scan Document Path
Scanner Part
3 2 1 5 7 6
White-Sheet
4
8
CCD-Module
1 2 3 4 5 6 7 8
Doc. Paper (30 Sheets) Pickup Roller ADF Roller Sensor - Doc. Sensor - Regi Sensor - Scan Feed Roller Exit Roller
6.1.2 Printer Paper Path
1) After receiving a print job, the printer feeds the paper from the cassette or manual feeder. 2) The fed paper passes the paper feeding sensor. (Jam 0 occurs if the sensor is not operated after a certain time passes) 3) The paper passes the paper feeding sensor moving to the paper exit sensor via printing process. (Jam 1 occurs if the paper exit sensor is not operated after a certain time passes) 4) The paper passes the paper exit sensor moving out of the set. (Jam 2 occurs if the sensor is still operated after a certain time passes.)
Engine Part
3
L S U
Fuser
CR DR OPC SR
Toner Cartridge
7
PR
2 6
P IC
PTL
TR
FR
4
5 1
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Service Manual July2003
Paper Input (Cassette) Paper Input (Manual Feeder) Paper Out (Face Down) Paper Empty Sensor (Manual)
5 6 7
Paper Empty Sensor (Cassette) Paper Feeding Sensor Paper Exit Sensor
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ALIGNMENT & A D J U S T M E N T S
6.2 Clearing Paper Jams
Occasionally, paper can be jammed during a print job. Some of the causes include: · The tray is loaded improperly or overfilled. · The tray has been pulled out during a print job. · The front cover has been opened during a print job. · Paper was used that does not meet paper specifications. · Paper that is outside of the supported size range was used.
If a paper jam occurs, the On Line/Error LED on the control panel lights red. Find and remove the jammed paper. If you don't see the paper, open the covers. Do not use a tweezers or a sharp metal tool when removing a jam. The covering of a metal part can be removed which can cause an electric leakage.
L S U
L S U
Fuser
EXIT Sensor
CR DR PR OPC SR
Toner Cartridge
Fuser
PTL
TR
EXIT Sensor
CR DR OPC SR
Toner Cartridge
Feed Sensor
MP Sensor
PR
FR
TR
K /R
PTL
Feed Sensor
MP Sensor
FR
Empty Sensor
Empty Sensor
P IC
Paper Jam0
Paper Jam1
L S U
L S U
Fuser
EXIT Sensor
Fuser
CR DR PR OPC SR
Toner Cartridge
EXIT Sensor
CR DR PR OPC SR
Toner Cartridge
PTL
PTL
TR
Feed Sensor MP Sensor
TR
Feed Sensor
MP Sensor
FR
FR
K /R
P IC
Empty Sensor
K /R
P IC
Empty Sensor
Paper Jam2
Bypass Jam
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Service Manual July 2003
K /R
P IC
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ALIGNMENT & A D J U S T M E N T S
6.2.1 Clearing Document Jams
If a document jams while it is feeding through the ADF (Automatic Document Feeder),"DOCUMENT JAM " appears on the display.
6.2.1.1 Input Misfeed
1) Open the ADF top cover. 3) Close the ADF top cover. Then load the documents back into the ADF. NOTE : To prevent document jams,use the document glass for the thick, thin or mixed documents.
2) Pull the document gently to the right and out of the ADF.
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ALIGNMENT & A D J U S T M E N T S
6.2.1.2 Exit Misfeed
1) Open the document cover and turn the release knob to remove the misfed documents from the exit area. 2) Close the document cover. Then load the documents back into the ADF.
6.2.1.3 Roller Misfeed
1) Open the document cover. 2) Turn the release knob so that you can easily remove the misfed document. Remove the document from the ADF or the feed area by carefully pulling it towards the right by using both hands.
3) Close the document cover. Then load the documents back into the ADF.
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Service Manual July 2003
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ALIGNMENT & A D J U S T M E N T S
6.2.2 Clearing Paper Jams
If paper jams occur, "PAPER JAM " appears on the display. Refer to the table below to locate and clear the paper jam. PAPER JAM 0 PAPER JAM 2 PAPER JAM 1 BYPASS JAM : In the paper feed area : In the paper exit area : In the fuser area or around the toner cartridge : In the Bypass tray
Follow the steps below to clear a jam. To avoid tearing the paper, pull the jammed paper out gently and slowly.
6.2.2.1 JAM0 (In the Paper Feed Area)
1) Open and close the front cover. The jammed paper automatically exits the machine. If the paper does not exit, continue to Step 2. 2 Pull the paper tray open. 4) Insert the paper tray into the machine until it snaps into place.
5) Open and close the front cover to resume printing. 3) Remove the jammed paper by gently pulling it straight out.
If there is any resistance when you pull the paper, or the paper is not seen in this area, skip to the fuser area around the toner cartridge
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6.2.2.2 JAM 2 (In the Paper Exit Area)
1) Open and close the front cover. The jammed paper automatically exits the machine. If the paper does not exit, continue to Step 2. 2) Gently pull the paper out of the front output tray. 4) Remove the jammed paper by gently pulling it straight out.
5) Close the rear cover. 3) If there is any resistance when you pull the paper, or the paper is not seen in the front output tray, open the rear cover. 6) Open and close the front cover to resume printing.
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6.2.2.3 JAM1 (In the Fuser Area of Around the Toner Cartridge Area)
NOTE : The fuser area is hot. Be careful when removing paper from the machine. 1) Open the front cover and remove the toner cartridge. 3) Replace the toner cartridge and close the front cover. Printing automatically resumes.
2) Remove the jammed paper by gently pulling it straight out.
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6.2.2.4 BYPASS JAM (In the Bypass Tray)
"BYPASS JAM " appears on the display when the machine does not detect paper in the Bypass tray due to no paper or improper paper loading when you try to print using the Bypass tray. "BYPASS JAM " also may occur when the paper is not properly fed into the machine through the Bypass tray. In that case, pull the paper out of the machine.
6.2.2.5 Tips for Avoiding Paper Jams
By selecting the correct paper types, most paper jams can be avoided. If a paper jam occurs, follow the steps outlined in "Clearing Paper Jams " · Follow the procedures in "Loading Paper ". Ensure that the adjustable guides are positioned correctly. · Do not overload the paper tray. Ensure that the paper is below the paper capacity mark on the inside wall of the paper tray. · Do not remove the paper from the tray while printing. · Flex, fan and straighten the paper before loading. · Do not use creased, damp, or highly curled paper. · Do not mix paper types in the paper tray. · Use only recommended print materials. See "Paper Specifications " · Ensure that the recommended print side is facing down when loading paper in the paper tray and facing up in the Bypass tray.
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6.3 User Mode
The figure below shows the possible user function settings. Usage details are provided in the user manual. In the service manual, the items are about the possible set-up by user.
1.Paper Setting
Paper Tray Paper Size
2.Copy Setup
Change Default Timeout
3.Fax Setup
Receive Mode Ring to Answer Contrast Redial Term Redials MSG Confirm. Auto Report Auto Reduction Discard Size
4.Fax Feature
Delay Fax Priority Fax Add / Cancel
5.Advanced Fax
Send Forward RCV Forward Toll Save Junk Fax Setup Secure Receive Prefix Dial No Stamp RCV Name ECM Mode
6.Reports
Phone Book Send Report RCV Report System Data Scheduled Jobs Tx Confirm. Junk Fax List
7.Sound/Volume
Speaker Ringer Key Sound Alarm sound
8.Machine Setup
Machine ID Date&Time Clock Mode Dial Mode Language Power Save CCD Power Save USB Mode
9.Maintenance
Clean Drum Notify toner Clear Memory
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6.4 Tech Mode
6.4.1 How to Enter Tech Mode
In service (Tech) mode, the technician can check the machine and perform various tests to isolate the cause of a malfunction. While in Tech mode, the machine still performs all normal operations.
To enter the Tech mode
To enter the Tech mode, press in sequence, and the LCD
briefly displays `TECH', the machine has entered service (Tech) mode.
6.4.2 Setting-up System in Tech Mode
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6.4.3 Data Setup
SEND LEVEL
You can set the level of the transmission signal. Typically, the Tx level should be under -12 dBm. Caution : The Send Fax Level is set for optimum performance when shipped from the factory. Never change settings arbitrarily.
MODEM SPEED
You can set the maximum modem speed. Modem speed is automatically set to the lower speed when communicating with a slower speed modem since communication is done using the standard of lowest speed unit to ensure proper transmission/reception. Speed is best set 33.6Kbps as the default setting.
ERROR RATE
When the error rate is about to exceed the set value, the Baud rate automatically adjusts to 2400 bps. This ensures that the error rate remains below the set value. You can select the rate between 5% and 10%.
CLEAR ALL MEMORY
The function resets the system to the factory default settings. This function is used to reset the system to the initial values when the product is functioning abnormally. All the values are returned to the default values, and all the information, which was set by the user, will be erased.
< Method >
1. 2. 3. 4. Select the [MEMORY CLEAR] in the TECH MODE. Push the ENTER button. Select your country. (There are four country groups. Refer to the table below.) Push the ENTER button then it will clear all memory.
NOTICE : Always perform a memory clear after replacing the main board. Otherwise, the system may not operate properly.
Country Group USA/Canada USA/Canada Mexico Brazil UK UK Germany France Italy Spain Austria Netherlands Belgium Portugal Sweden Norway Denmark Finland Switzerland Greece Ireland Turkey Russia Russia india Oman Poland Bangladesh Kuwait Moroco Algeria Pakistan UAE Bahrain Srilanka SaudiArabia Chile Peru Argentina Hungary Romania Bulgaria Czech Southafrica Southafrica
Country
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FLASH UPGRADE
The Firmware Upgrade function and has two methods, Local and Remote. (1) Local Machine · RCP (Remote Control Panel) mode This method is for Parallel Port or USB Port. Connect to PC and activate RCP (Remote Control Panel) to upgrade the Firmware. < Method > How to Update Firmware using RCP 1. Connect PC and printer with Parallel Cable or USB Cable. 2. Execute RCP and select Firmware Update. 3. Search Firmware file to update with Browse Icon. 4. Click Update icon, firmware file is transmitted to the printer automatically and the printer is initialized when transmission is complete. 5. Click the Refresh icon to check what is updated. · DOS Command mode This method is just for Parallel Port. Connect to PC with Parallel cable and enter DOS Command to upgrade the Firmware. < Method > 1. First, ensure that you have the following files : down.bat, down_com.bin, fprt.exe, and Rom File: file name for upgrade. Save the files in the same folder. 2. In DOS, input as below and push the Enter key. Then, it will be automatically upgraded. 3. There are two commands for the conditions of product. * When the product is in idle condition down "rom file" * When the product is in Ready condition (TECH MODE DATA SETUP FLASH UPGRADE LOCAL) fprt "rom file" 4. Do not turn off the power while in the upgrade process.
(2) Remote FAX This function allows a fax with the latest firmware to send files to another fax over the telephone line. < Method > 1. Setup the fax with the latest firmware t