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L A S E R
P R I N T E R Ecosys FS-600/680
The model FS-600 printer was designed by the world-famous F.A. Porsche consultancy. The FS-600 has 4-ppm and the FS-680 has 8-ppm printing speed.
FS-600/680 Service Manual ©Kyocera Corporation 1997--1999. All rights reserved. Export Edition Notice The information in this manual is subject to change without notification. Additional pages may be inserted in future editions. The user is asked to excuse any technical inaccuracies or typographical errors in the present edition. No responsibility is assumed if accidents occur while the user is following the instructions in this manual. No responsibility is assumed for defects in the printer's firmware. The contents of this manual are protected by copyright. No part of this manual may be reproduced or copied by any means without the permission of the copyright holder. The printer's firmware (contents of its read-only memory) is similarly protected by copyright. This Kyocera printer uses PeerlessPrint5 to provide the HP LaserJet IV compatible PCL5e language emulation. PeerlessPrint5 is a trademark of the Peerless Group, Redondo Beach, CA 90278, U.S.A. This product was developed using the TornadoTM Real Time Operating System from Wind River Systems. Trademark Notice Prescribe is a registered trademark of Kyocera Corporation. PRESCRIBE IIe, KIR, Kyocera Image Refinement, Ecosys, and Ecotone are trademarks of Kyocera Corporation. Diablo 630 is a product of Xerox Corporation. IBM Proprinter X-24E is a product of International Business Machine Corporation. Epson LQ-850 is a product of Seiko Epson Corporation. HP LaserJet 5Si and HP-7475A are product of HewlettPackard Company. Hewlett-Packard, PCL, and HP-GL are registered trademarks of Hewlett-Packard Company. Centronics is a trade name of Centronics Data Computer Corp. Warning This equipment has been certified to comply with the limits for a Class B computing device, pursuant to Subpart J of Part 15 of FCC Rules. Only peripherals (computer input/output devices, terminals, etc.) certified to comply with the Class B limits may be attached to this equipment. Operation with non-certified peripherals is likely to result in interference to radio and TV reception. Check that the cable is wired correctly. If an IBM communication adapter cable type 1502067 is used, it will have to be resoldered the wiring at the printer end of the cable. The procedure is as follows.
Conventions/Preface
Conventions
Throughout this manual, the following conventions are used: Color is available when viewed online to emphasize important notices.
CAPITAL letters are used to name printer parts and assemblies.
Italic letters refer related chapters or sections or documentations. Bold letters are also used for emphasis wherever italics may cause a confuse. This symbol followed by Warning denotes that the following paragraph(s) includes precautions which, if ignored, could result in personal injury, and/or irrevocable damage to the printer. When followed by Caution this symbol denotes that the following paragraph(s) include the precautions which, if ignored, could result in damage to the printer.
iii
Conventions/Preface
About the chapters ...
The service manual applies to the printer models Ecosys FS-600 and FS-680. It provides various information on servicing the printer, divided into the following chapters:
Chapter One----Product information Two----Installation and operation Three----Maintenance Four----Operation overview Five----Disassembly Six----Troubleshooting Appendix A----Printer interface B----Status page Separate Parts catalogs
Contents Includes printer specifications, product appearances, safety information, etc. Provides how to install and operate the printer. Instructs maintenance to be conducted periodically on the printer. Explains basic functions of the printer methcnism including engine and logic controller systems. Instructs removal of parts for replacing them. Provides countermesure to follow for troubleshooting. Contents Information regarding the printer's parallel and serial interfaces. Explains detail of the service information on the status page. Contents Information of parts for ordering.
The manual will be supplemented with chapters or appendixes accordingly.
iv
Conventions/Preface
REVISION HISTORY Version 1.00a 1.10 Date 31-Oct-97 15-Dec-97 Replaced pages -- 1-14, 2-10, 4-11, 4-18, 4-19, 4-22--25, 4-27, 429, 4-30, 4-34, 4-39, 4-44, 6-3, 6-12, 6-14, 616, 6-18, 6-19, 6-21--25 Inclusion of the FS-680 [8ppm] Remarks KE distribution only
2.00
22-Dec-98
VISIT US AT OUR INTERNET HOME PAGE (JAPAN):
http://www.kyocera.co.jp
FOR AVAILABILITY OF PRINTER DRIVERS AND UTILITIES, ACCESS TO YOUR LOCAL KYOCERA INTERNET SITE.
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Conventions/Preface
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vi
Chapter One Product Information
Chapter One Product Information 1
Printer specifications 1-3 Engine 1-3 Controller 1-4 Weight and dimensions 1-4 Power requirements 1-5 Environmental requirements 1-6 Names of parts 1-7 Safety information 1-8 Laser notice for service person (U.S.A.) 1-8 Laser caution label on the scanner unit 1-8 CDRH regulations (U.S.A.) 1-10 Ozone concentration 1-10 FCC notice (U.S.A.) 1-10 Option equipment 1-11 Important note on the interface connectors 1-12 Canadian Department of Communications compliance statement 1-13 Avis de conformité aux normes du ministère des Communications du Canada 1-13 ISO 7779 1-13 Environmental requirements 1-14 Environmental conditions 1-14 Clearance 1-15 Places to avoid 1-16 Note on power 1-17 About the toner 1-18 Toner container handling 1-18 Toner storage 1-19
Printer Specifications
Engine
Item Print method Print speed (when printing multiple copies of the same page) Resolution (dpi) Smoothing First print (A4 or letter, 23°C), depends ° on input data Warm-up time at 23° ° Maximum duty cycle (A4) Process unit life expectancy Developing Laser diode Main charger Transferring Separation Drum cleaning Drum discharging Fuser Paper Capacity of paper feed trays (80g/m2 [0.11 mm thickness]) Capacity of output trays (80g/m2 [0.11 mm thickness]) Specification Electrophotography laser scan FS-600--6 pages/min. FS-680--8 pages/min. 600 horizontal/600 vertical KIR 2 (2400 horizontal/600 vertical) 25 seconds or less (55 seconds or less reverting from sleeping) 30 seconds or less 8,000 pages/month 100,000 pages of printing or 3 years Dual component developer Invisible laser Roller charger Biased roller Curvature separation Blade Not used Heat and pressure Plain paper: Letter or A4 to A5 universal Cassette--150 sheets, manual--1 sheet Face-up--10 sheets, Face-down--150 sheets
Product information
Printer Specifications
Controller
Item CPU System/font ROM size Main (video) RAM Additional RAM (SIMM) Host interface Page description language Standard emulation modes PowerPPC401GF/50 MHz 4 MB, DIMM 4 MB 32 MB (72-pin SIMM × 1); max. main RAM--36 MB Parallel: High-speed, bi-directional (IEEE1284), Option, KUIO Prescribe Iie HP LaserJet 5P, IBM Proprinter X24E, Diablo 630, Epson LQ-850 Specification
Weight and dimensions
Item Main unit (excl. protrusions) Width Height Depth Weight Paper feeder PF-16 (excl. protrusions) Width 36.3 cm (14.3") 22.2 cm (8.7") 36.0 cm (14.1") 8.5 kg (19 lb.) 56 cm (22") Specification
Weight Height Depth Weight
36.3 cm (14.3") 7.3 cm (2.8") 37.0 cm (14.6") 1.1 kg (4 lb.)
FS-600/FS-680
1-4
Product information
Printer Specifications
Power requirements
Item Voltage/current requirements US/Canada Specification 120V AC ±10%, 60Hz ±2%/4.3A
Europe/Asia Watts Maximum Normal operation Standby Sleeping
220-240V AC±10%, 50 or 60Hz ±2%/2.1A 485W (230V) or 510W (120V) FS-600--175 W FS-680--200 W FS-600--49 W FS-680--62 W 10 W
FS-600/FS-680
1-5
Product information
Printer Specifications
Environmental requirements
Item Operating temperature and humidity Maximum altitude Noise emission (Excluding peaks, measured at 1m from printer, as per ISO7779) Specification 10°C to 32.5°C (50°F to 90.5°F), 20 to 80% RH 2,000 m (6,500 feet) 46 dB (A) maximum/25 dB (A) at standby/unmeasurably low at sleeping)
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1-6
Product information
Names of parts
Names of parts
Face-up output tray
Buttons and indicators
Paper cassette Manual feed tray
Parallel interface
Slot cover for option interface Power switch Power receptacle
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1-7
Product information
Safety information
Safety information
Laser notice for service person (U.S.A.) This printer is certified in the U.S. to conform to the requirements of DHHS 21 CFR Subchapter for Class I (1) laser products, and elsewhere is certified as a Class I laser product conforming to the requirements of IEC 825. Class I laser products are not considered to be hazardous. The printer contains internally a Class IIIa (3a) laser that is nominally a 5 milliwatt laser operating in the wavelength region of 780 nano-meters. 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.
Laser caution label on the scanner unit The laser product label is (identification and certification label) is located on the rear side of the printer as below.
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1-8
Product information
Safety information
Product ID labels (Ex.--FS-600)
Europe/Asia version
US/Canada version
Warning--Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
See page 5-9 for the location of this label.
FS-600/FS-680
1-9
Product information
Safety information
CDRH regulations (U.S.A.) The Center of Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented regulations for laser products on August 2, 1976. These regulations apply to laser products manufactured after August 1, 1976. Compliance is mandatory for products marketed in the United States. A label indicating compliance with the CDRH regulations must be attached to laser products marketed in the United States. Ozone concentration Laser printers generate ozone gas (O3) which may concentrate in the place of installation and cause an unpleasant smell. To minimize the concentration of ozone gas, we recommend that the laser printer not be installed in a confined area lacking ventilation. FCC notice (U.S.A.) This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communication. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.
FS-600/FS-680
1-10
Product information
Safety information
Change or modifications not expressly approved by the manufacturer for compliance could void the user's authority to operate the equipment. Interference cable to the computer shall be used with shielded circular cable. Any modification without prior permission may cause harmful interface. If any modification/change is introduced to this equipment without prior permission, Kyocera, as the manufacturer, cannot guarantee compliance with FCC rules. To use equipment which does not comply with FCC rules is prohibited.
Option equipment The printer may be optionally installed with the following units, with compliance with class B limits:
PF-16--250-sheet paper feeder IB-10--RS-232C/RS-422A serial interface board kit
FS-600/FS-680
1-11
Product information
Safety information
Important note on the interface connectors Be sure to turn off printer power before connecting or disconnecting an interface cable to the printer. For protection against static discharge which may be applied to the printer's internal electronics through the interface connector(s), keep any interface connector which is not in use capped using the protective cap supplied.
Warning--This equipment has been certified to comply with the limits for a Class B computing device, pursuant to Subpart J of Part 15 of FCC Rules. Only peripherals (computer input/output devices, terminals, etc.) certified to comply with the Class B limits may be attached to this equipment. Operation with non-certified peripherals is likely to result in interference to radio and TV reception.
FS-600/FS-680
1-12
Product information
Safety information
Canadian Department of Communications compliance statement This Class B digital apparatus meets all requirements of the Canadian InterferenceCausing Equipment Regulations. Avis de conformité aux normes du ministère des Communications du Canada Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
ISO 7779 Maschinenlärminformationsverordnung 3. GSGV, 18.01.1991: Der höchste Schalldruckpegel beträgt 70 dB(A) oder weniger gemäß ISO 7779.
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Product information
Environmental requirements
Environmental requirements
Environmental conditions The Environmental requirements section on page 1-6 should be observed to ensure the optimum operation of the printer. The use of the printer in a location which does not satisfy the requirements may result in troubles and risk shortening its service life. The printer will work best if it is installed in a location that is: Level and well supported (Place the printer on a sturdy table or desk.) Not exposed to sunlight or other bright light (not next to an uncurtained window). Do not place the printer on an unstable cart, stand, or table. Near an AC wall outlet, preferably one that can be used for the printer alone (See section Power requirements on page 1-5). (The outlet should have a ground slot, or an adapter should be used. If you use an extension cord, the total length of the power cord plus extension cord should be 17 feet or 5 meters or less. Well ventilated, not too hot or cold, and not too damp or dry (See section Environmental requirements on page 1-6). If you install the printer where the temperature or humidity is outside the requirements in section Environmental requirements in chapter 1, the best print quality may not be expected and there will be an increased chance of paper jams. Provide a sufficient clearances around the printer to ensure ventilation and ease of access. See section Clearance on page 1-15.)
FS-600/FS-680
1-14
Product information
Environmental requirements
Clearance Allow the necessary minimum clearance on all sides of the printer (below). A total space of 67 by 126 cm is needed.
Clearance Left Front Right Back Above 5 cm (2") 50 cm (19.6") 25 cm (9.8") 40 cm (15.7") 30 cm (11.8")
Dimensions
FS-600/FS-680
1-15
Product information
Environmental requirements
Places to avoid Avoid installing the printer in locations exposed to: Direct drafts of hot or cold air. Direct drafts of outside air. (Avoid locations next to outside doors.) Sudden temperature or humidity changes. Any source of high heat, such as a radiator or stove. Excessive dust. Dust and smoke may cause contamination on the laser scanner window, causing print quality problem. Vibration. Ammonia fumes or other harmful fumes. (In case of humigating the room or saturate it with insecticide, remove the printer first.) Avoid greenhouse-like rooms. (Because of sunlight and humidity.) Avoid enclosed spaces that block ventilation. Avoid sites more than 6500 feet or 2000 meters above sea level.
FS-600/FS-680
1-16
Product information
Environmental requirements
Note on power Use only the power source voltage conforming to the printer's rated power voltage (See section Power requirements on page 1-5). Do not use other power sources. Disconnect the printer from the power source before attempting removal or re-placement of an electrical component or a printed-circuit board. The printer should not be connected to a power source until the instruction is given to do so when performing tests described in this manual. In connecting the printer power, exercise an extreme care in handling the power supply or any other electric parts which may give an electric shock. Before performing maintenance or repair, power from both the power source and the associated peripheral devices (computer, sorter, etc.) should be disconnected, unless otherwise specified. To avoid possible electrical shock, extreme caution must be exercised in handling the power cord and any other electrical part. An easily accessible socket outlet must be provided near the equipment.
Warning--As the disconnect device is not incocrporated in the printer's AC primary circuit, an easily accessible socket outlet must be provided near the equipment. Wornung--Da kein Trennschalter in den Wechselstrom-Primärkreis des Druckers eingebaut ist, muß eine leicht zugängliche Steckdose in der Nähe des Gerätes vorhanden sein.
FS-600/FS-680
1-17
Product information
About the toner
About the toner
The printer should use Kyocera TK-16 Toner Kit. To ensure the high print quality and long service life, the following handling precautions should apply. Caution--As the Ecosys printers are designed to ensure the optimum print quality when used with the Kyocera's proprietary toner, Kyocera do not recommend to use any refilled toner containers that may be available commercially. This is because Kyocera have no means for control over how such refilled toner could affect the print quality and the reliability of the printer.
Toner container handling To loosen and mix the toner inside before use, with the label side down, thoroughly shake the toner container (in the direction of the arrow) 5 times or more.
Caution--Do not attempt to disassemble or refill the toner container.
FS-600/FS-680
1-18
Product information
About the toner
Toner storage The toner contained in the container is susceptible to temperature and humidity. To ensure the high print quality, store the toner container in a place that satisfy the following environmental conditions:
Temperature Humidity -20°C to 40°C (-4°F to 104°F) 15 to 90% RH
Note--If the toner container is removed from the printer's developer unit, put it in a protective bag and keep it in a dark place. Caution--If the printer is shipped for return, etc., do not ship it with the toner container installed. Otherwise, toner may leak and contamination may result in the printer.
FS-600/FS-680
1-19
Installation and operation
Unpacking
Chapter Two
INSTALLATION/OPERATION
2-3
FS-600/FS-680
Installation and operation
Unpacking
Table of Contents
Unpacking 2-3 Unpacking and inspection 2-3 Installing the printer 2-4 Connecting the printer and the paper feeder 2-4 Getting the process unit ready for use 2-5 Installing the toner container 2-8 Expanding memory 2-11 Minimum memory requirements 2-11 SIMM specifications 2-11 Notes on handling SIMM 2-11 Getting access to the memory sockets 2-12 Removing the main circuit board 2-13 Inserting SIMM 2-15 Testing the expansion memory 2-15 Installing KPDL 2-16 Installing the KPDL ROM 2-16 Getting access to the KPDL ROM socket 2-17 Using the control panel 2-18 Control panel panel 2-18 Basic key operation 2-19 Indicators 2-20 Replacing the control panel 2-21
2-2
FS-600/FS-680
Installation and operation
Unpacking
Unpacking
Unpacking and inspection
The package should contain the printer andd the accessories as shown in the figure below. Remove the printer and all the accessories from the package.
Printer
Power cable
TK-16 toner container
Installation manual
Quick reference
Kyocera Digital Library CD-ROM
For unpacking, place the box containing the printer on a flat, stable surface. Remove the manuals, toner kit, and other items located on top of the spacer and remove the spacer. Carefully remove the printer. Obtain help from other persons if necessary.
2-3
FS-600/FS-680
Installation and operation
Installing the printer
Installing the printer
Installing the printer requires several steps. Proceed as follows in sequence. If the option paper feeder is used with the printer, begin installation with Connecting the printer and the paper feeder, below.
Connecting the printer and the paper feeder
Align the pins and the connector on the paper feeder with the matching holes and the connector located at the bottom of the printer, then slowly lower the printer onto the paper feeder.
2-4
FS-600/FS-680
Installation and operation
Installing the printer
Getting the process unit ready for use
The printer comes with the Process unit (PU-16) factory-installed inside. The Process unit must once be taken out from the printer for a simple treatment that must be done before use. To do this, proceed as follows.
Caution--The drum in the process unit is sensitive to light. Do not expose it even to normal office lighting (500 lux) for more than five minutes. Caution--Handle the process unit with care. Avoid impact on it. Do not touch the green or blue surface of the drum in the process unit.
Open the top cover. Holding the Process unit like below, take the Process unit carefully out.
2-5
FS-600/FS-680
Installation and operation
Installing the printer
Pull and remove the process unit protective seal.
Note----Retain the protective seal. It will be necessary for the possible future shipment of the Process unit.
Give the process unit a horizontal shake of 5 times or more.
2-6
FS-600/FS-680
Installation and operation
Installing the printer
Install the process unit in the printer. In doing so, be sure to align the locating keys on the Process unit with the slots in the printer.
2-7
FS-600/FS-680
Installation and operation
Installing the printer
Important note on shipping the printer----If the printer is to be shipped or transported, be sure to replace the (original) protective seal onto the Process unit. If the Protective seal is not available, contact Kyocera. (There will be certain difficulty when removing the Process unit fitted with a protective seal from the printer.)
Installing the toner container
Take the toner container from the protective bag. Shake the toner container with the protective seal (orange color) n facing up five times or more. This thoroughly mix the toner inside the container.
n
Carefully remove the protective seal.
2-8
FS-600/FS-680
Installation and operation
Installing the printer
Align the ends of the toner container with the grooves o to the left and right inside the printer and install.
o
Check that the toner container is installed in the correct position, and push forcedly on the top of the toner container PUSH HERE.
2-9
FS-600/FS-680
Installation and operation
Installing the printer
Close the top cover.
2-10
FS-600/FS-680
Installation and operation
Expanding memory
Expanding memory
Both printer models come standard-equipped with 4MB of main memory. Printer memory can be expanded to up to the maximum of 36 MB by installing an optional SIMM.
Minimum memory requirements
Refer to the table below for minimum memory requirements in various environments.
Resolution Printing environment HP LaserJet 5P (factory setting) HP LaserJet 5P with resource protection 300 dpi 2MB -- 600 dpi 2MB 10MB
SIMM specifications
Memory size in MB Number of pins Access speed Parity Bus width 4, 8, 16, 32 72 80 ns or faster Without 32 bits
Notes on handling SIMM
Before proceeding to install SIMM, read the following notes for handling the main circuit board and SIMMs: · · Protect the electronics by taking these precautions: Before touching the main circuit board, touch a water pipe or other large metal object to discharge yourself of static electricity. While doing the work, it is recommended that you wear an antistatic wrist strap. 2-11
FS-600/FS-680
Installation and operation
Expanding memory
· ·
Touch the main circuit board and SIMM only by the edges, not in the middle. See below. Follow the instructions the SIMM manufacturer should have provided.
Getting access to the memory sockets
The main circuit board of the printer is equipped with two sockets for memory expansion. Expansion memory is available in the form of SIMM (Single Inline Memory Module). Caution--Take precautions that no foreign substances such as metal chips or liquid get inside the printer during the installation process. Operation of the printer during the presence of a foreign substance may lead to fire or electric shock. Warning--Turn the printer's power off. Unplug the printer's power cable and disconnect the printer from the computer or the network.
2-12
FS-600/FS-680
Installation and operation
Expanding memory
Removing the main circuit board
Turn the power switch off. Unplug the printer's power cable and disconnect it from the host computer or network. Remove two screws and draw the main circuit board .
Caution--When the main board is open, use care to avoid foreign objets from entering the main board area. Otherwise, a serious damage to the printer could result.
Locate the socket for expansion SIMM on the main controller board by referring to the diagram on the next page. The socket has 72 pins and the symbolic code of YS02. See diagram on the next page.
2-13
FS-600/FS-680
Installation and operation
Expanding memory
U04: KPDL ROM socket (See page 2-15.)
Rear panel Rear Panel
Expansion SIMM socket
YS02
2-14
FS-600/FS-680
Installation and operation
Expanding memory
Inserting SIMM
Insert the SIMM into the socket as shown. Carefully push the board upright until it snaps into place. Make sure that the catches at the ends of the socket fit into the holes at the ends of the SIMM board.
To remove SIMM, use the reverse manner.
Testing the expansion memory
After installing SIMM in the printer, test the printer to see if the installation has been successful. To test the expansion memory, turn printer power on and print a status page. If the installation has been successful, the Available Memory item of the status page will show the expanded memory size corresponding to the amount of memory added.
2-15
FS-600/FS-680
Installation and operation
Installing KPDL
Installing KPDL
KPDL (Kyocera Printer Description Language) is an upgrade to add the Kyocera's implementation of the PostScript page description language to the printer. Upgrade is done by inserting a KPDL ROM (PK-1/2/4) into an empty socket on the printer's main circuit board. For details on KPDL, refer to the KPDL Upgrade Kit Installation Manual supplied with PK-1/2/4.
Installing the KPDL ROM
Before installing the KPDL ROM delivered, carefully straighten the pins as follows.
Make sure that none of the pins are bent.
To insert the ROM into its socket, position the ROM in the socket as shown. Make sure that the U-shaped indentation at the end of the ROM is oriented in the same direction as the U-shaped indentation at the end of the socket. Align all pins of the ROM properly with their socket holes.
ROM
Socket
"U" indentations
2-16
FS-600/FS-680
Installation and operation
Installing KPDL
Getting access to the KPDL ROM socket
Refer to the previous section (page 2-11) and remove the printer's rear panel. Locate the socket for inserting Sthe KPDL ROM. Refer to the diagram on page 2-14. This socket is marked as U04.
2-17
FS-600/FS-680
Installation and operation
Using the control panel
Using the control panel
This section provides explanation on how to use the printer's control panel for basic operation. For details, refer to the printer's User's Manual.
Control panel panel
The printer's control panel has the following LED indicators and keys. Note that adjustments to the printer parameters made using these keys may be overridden by those made from within the application software.
ON LINE / A4 DATA / LTR MANUAL / LGL CASS / OTHERS JAM TONER
ON LINE / STATUS
FEED / SIZE
SLEEP / CANCEL
SHIFT
The control panel is detachable and may be replaced to a different language version for local support.
2-18
FS-600/FS-680
Installation and operation
Using the control panel
Basic key operation
The control keys are used to configure the printer as follows. For more detailed explanations on these keys, refer to the printer's User's Manual. Note that these keys have the second function which is invoked when the key is pressed simultaneously with the SHIFT key. See table below.
Function Key ON LINE/STATUS FEED/SIZE SLEEP/CANCEL Primary Secondary (when pressed with SHIFT key)
Switches the printer online and offline. Prints a page of status information. Selects the cassette feed, paper Indicates the paper size of feeder, or manual feed. currently selected paper source. the
Sets the sleep mode. Pressing this key Abandons a printing job, resets a second time turns off the sleep numeric values or cancels a setting mode. procedure. Invokes the secondary functioin of each of the above keys when pressed together.
SHIFT
2-19
FS-600/FS-680
Installation and operation
Using the control panel
Indicators
Indicator --ONLINE/A4 Lit Status Function The printer is on-line and ready to prints received data. Also, indicates that A4 size is selected for the current cassette when the FEED key is pressed together with the SHIFT key. The printer is off-line. The printer stores but not prints received data. The printer is receiving data from the host computer. The printer is processing the data for printing. Also, indicates that letter size is selected for the current cassette when the FEED key is pressed together with the SHIFT key. Indicates that there is no paper on the manual feed tray. Indicates that paper is fed from the manual feed tray. (If lit together with CASS/OTHERS, it indicates that paper is fed from the PF-16 paper feeder, if installed.) Also, indicates momentarily that legal size is selected when the SHIFT+FEED/SIZE key is prressed. Indicates that threre is no paper in the printer's cassette. Indicates that paper is fed from the printer's cassette (If lit together with MANUAL/LGL, it indicates that paper is fed from the PF-16 paper feeder, if installed.) Also, indicates 1 momentarily that A5 size is selected when the SHIFT+FEED/SIZE key is prressed. Indicates that the top cover is open. Indicates that paper is jammed. Indicates there is insufficient toner. Indicates that the printer is out of toner. Replace with a new toner container.
Off --DATA/LTR Flashing Lit
--MANUAL/LGL
Flashing Lit
G--CASS/OTHERS
Flashing Lit
H--JAM
Flashing Lit
I--TONER
Flashing Lit
1
Factory default. The OTHERS size can be changed by Prescribe FRPO T3 command (0=A5). For details, refer to Presccribe Programming manual in the Kyocera Digital Library CD-ROM.
2-20
FS-600/FS-680
Installation and operation
Replacing the control panel
Replacing the control panel
The control panel is detachable for local language support. Refer to the Parts Catalog for availability of the control panel appropriate for your area. To remove and replace the control panel to a different language version, see next page.
2-21
FS-600/FS-680
Installation and operation
Replacing the control panel
Open the top cover. Insert a small flat blade screw under the control panel at the following point.
Close the top cover. Remove the control panel by lifting the front side first.
Attach the new control panel with the far end snapped in the printer first, then the front side (using the reverse manner as above).
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FS-600/FS-680
Chapter Three M A I N T E N A N C E / A D J U S T M E N T S
Chapter threeM A I N T E N A N C E / A D J U S T M E N T S 3-1
Life expectancy of modules 3 Toner container 4 When to replace the toner container 4 Notes on changing toner container 4 Toner container replacement 5 Toner saver mode (EcoPrint) 6 Cleaning the printer 3-7 Cleaning the registration roller 3-8 Updating the firmware 3-10 Firmware data format 3-11 Downloading controller firmware data 3-12 Errors during downloading 3-12
3-2
Life expectancy of modules
Maintenance and adjustment
Life expectancy of modules
The table below shows the nominal life expectancy for modules. Detailed part information for each module (except toner container) can be found in Parts Catalog.
Kit TK-16 PU-16 Module Toner container Process unit Nominal life (pages) 3,000 User-replaceable 100,000 Remarks
3-3
FS-600/FS-680
Maintenance and adjustment
Toner container
Toner container
Assuming an average toner coverage of 5% with Ecoprint mode turned off, the toner container will need replacing approximately once every 3,000 printed pages.
Model TK-16 Life in pages1 3,000
When to replace the toner container When the printer runs low on toner, the TONER indicator flashes on the control panel. Be sure to promptly replace with a new toner kit. Clean the inside of the printer when this initial message appears. If the printer stops printing while the TONER indicator is lighting, replace with a new toner kit so the printer can continue printing. Notes on changing toner container Observe the following cautions when replacing the toner container: · Do not attempt to disassemble the old toner container and reuse the waste toner inside. · Keep magnetic media such as floppy disks away from the toner container. · Be sure to clean the parts as instructed in this section at the same timing of replacing toner container. · Use of the Kyocera toner kit TK-16 is highly recommended for the optimum operation of the printer.
1
Based on letter or A4 size paper; average print density of 5%.
3-4
FS-600/FS-680
Maintenance and adjustment
Toner container
Toner container replacement To replace the toner container, open the top cover. Pull the toner container release levers to the right position as shown. Lift and pull out the toner container.
Toner container
Use the cap provided in the new toner kit to seal the removed toner container.
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FS-600/FS-680
Maintenance and adjustment
Toner container
Dispose of the old toner container in the plastic bag supplied in the new toner kit. Note--Although the toner container is made from non-harmful, flammable material, be sure to dispose of it according to laws and regulations.
Proceed with the instructions provided in chapter 2, Installing the toner container on page 2-8 to complete installation of the new toner container.
Toner saver mode (EcoPrint) The EcoPrint enables to reduce the amount of toner consumed on the page so as to save printing costs by drastically extending the toner container life. EcoPrint mode is factory-set to off and turned on by the Print dialog under the File menu in the application software (when the printer is installed under Microsoft Windows).
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Maintenance and adjustment
Cleaning the printer
Cleaning the printer
To avoid print quality problems, the following printer parts must be cleaned with every toner container replacement. To clean the printer, first, remove the Process unit from the printer.
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FS-600/FS-680
Maintenance and adjustment
Cleaning the printer
Cleaning the registration roller Use the cleaning cloth OE supplied with the new toner kit. Clean dust and dirt away from the registration roller ·.
OE
·
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FS-600/FS-680
Maintenance and adjustment
Cleaning the printer
Use the cleaning cloth, clean the laser scanner cover glass Z from the bottom side.
Z
BOTTOM VIEW
After cleaning is done, install the process unit in the printer, using the reverse manner as above. Close the top cover.
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FS-600/FS-680
Updating the firmware
Maintenance and adjustment
Updating the firmware
The printer accepts update of the system firmware sent through the parallel interface. A PC that is connected to the printer's parallel interface and capable of running in DOS mode is required for this purpose. Updating the firmware is implemented by directly downloading the new firmware data for rewriting the flush memory chip in the printer.
3-10
FS-600/FS-680
Updating the firmware
Maintenance and adjustment
Firmware data format Kyocera supplies the data to be downloaded in the following file format:
ds0244.dat
Ê Ë Ì Í
Identifies...
Ê Ë Ì Í
de: Engine firmware data (*) ds: Controller (system) firmware data dm: Front panel message data (*) 19: FS-600 44: FS-680 Version of data (2 to 4 digits) dat: Engine/controller firmware data (*) dan: Panel message data for Danish (*) swe: Panel message data for Swedish (*) ita: Panel message data for Italian (*) spa: Panel message data for Spanish (*)
(*) These are listed for reference purpose and not applicable for models FS-600/FS-680.
Caution--Do not turn off printer power while data are being downloaded (approximately one minute).
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FS-600/FS-680
Updating the firmware
Maintenance and adjustment
Downloading controller firmware data To download controller firmware data, use Prescribe UPGR command as follows.
Perform in sequence: Turn printer power on. Make sure the printer is ready. At the DOS prompt, send the following command to the printer: !R! UPGR "SYS"; Note--Do not add an EXIT; command in the above. DOS COPY (/b) the data to download from the host computer. Turn power off. Turn power on again. Check the printer gets ready. If not, refer to the section which follows.
Caution--Downloading controller firmware takes several minutes (depending on the processing speed of the computer used). Do not turn power off during downloading. Confirm the status page shows the new firmware version (See Appendix B, page B-4). If downloading fails, the printer indicates an error display using the LED indicators. To identify errors, refer to the table which follows. Errors during downloading The following messages may be indicated by the LED indicators when an error has occurred during downloading firmware data. Take the appropriate corrective action. If the corrective action does not terminate the error, contact Kyocera.
Error message D0 - Checksum error Meaning Checksum error occurred during downloading. The engine ROM is empty. The data to be downloaded is not compatible with the printer. The version of the data does not match the current engine version. The data to be downloaded is corrupted. Corrective action Turn printer power off once, then on again. Try downloading again. Obtain correct data for the printer model. Obtain the correct version of data. Obtain the correct data.
D1 - Machine compatibility error D2 - Version compatibility error D3 - Data error
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FS-600/FS-680
Chapter Four
OPERATION OVERVIEW
Chapter Four
O P E R A T I O N
O V E R V I E W
1
Electrophotographics system 4-3 Electrophotographic cycle 4-3 Photoconductive drum 4-4 Charging the drum 4-5 Exposure 4-7 Development 4-10 Transfer 4-13 Fusing 4-13 Drum cleaning 4-15 Typical photo process timing chart 4-16 Paper feeding system 4-17 Paper control signals 4-18 Sensors 4-19 Paper jam sensing 4-19 Cassette feeding 4-20 Manual paper feeding 4-20 Basic engine functions 4-21 Engine controller system 4-22 Laser scanner control 4-22 Polygon motor control 4-22 Safety interlock 4-23 Total page counter and permenent parameters strorage 4-23 Engine CPU pin assignment 4-24 Power supply 4-26 Main logic controller system 4-29 Main logic controller overview 4-30 Main logic controller overview 4-30 Controller block diagram 4-31 Printing data processing 4-32 API ROM socket (U05) 4-33 API ROM socket pin assignment 4-34 System ROM module (YS01) 4-35 RAM (U6 and U9) 4-35 KUIO interface 4-36 Parallel interface 4-38 Serial interface (IB-10 option) 4-38 Debugging output 4-38 Engine interface 4-39 Engine interface connector assignment 4-40 Signals used for the engine interface 4-41 Engine interface signals 4-42
Operation theory
Operation overview
Electrophotographics system
Electrophotography is the technology used in laser printing which transfers data representing texts or graphics objects into a visible image which is developed on the photosensitive drum, finally fusing on paper, using light beam generated by a laser diode. This section provides technical details on the printer's electrophtography system.
Electrophotographic cycle
The electrophotography system of the printer performs a cyclic action made of six steps as follows. Each step is technically explained in the following sections. · · · · · · Step 1. Main charging Step 2. Exposure Step 3. Developing Step 4. Transfer Step 5. Fusing Step 6. Cleaning
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FS-600/FS-680
Operation theory
Operation overview
Photoconductive drum
The durable layer of organic photoconductor (OPC) is coated over the aluminum cylinder base. The OPC tends to reduce its own electrical conductance when exposed to light. After a cyclic process of charging, exposure, and development, the electrostatic image is constituted over the OPC layer. Since the OPC is materialized by resin, it is susceptible to damage caused by sharp edges such as a screwdriver, etc., resulting in a print quality problem. Also, finger prints can cause deterioration of the OPC layer, therefore, the drum unit (in the process unit) must be handled with care. Substances like water, alcohol, organic solvent, etc., should be strictly avoided. As with all other OPC drums, the exposure to a strong light souce for a prolonged period can cause a print quality problem. The limit is approximately 500 lux for less than five minutes. If the drum unit (process unit) remains removed from the printer, it should be stored in a cool, dark place.
Photoconductive layer
Aluminum base cylinder
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FS-600/FS-680
Operation theory
Operation overview
Charging the drum
Figure below is a simplified diagram for explaining how the drum is electrically charged. The roller charging system that gives electrical charge on the photoconductive drum using an electroconductive rubber roller is used. The rubber roller is pressed against the drum by means of the pressure given by coil springs and rotates following the drum's revolution. The axle of the rubber roller is connected to the high-voltage power supply via the electrically conductive (resin) axle holder. The rubber roller is thus supplied with the ACbised DC voltage for charging the drum. The OPC material needs to be negatively charged so as to function as a photo conductor. The negative DC is therefore used for the charging high voltage bias. The surface of the rubber roller is delicate and should not be touched by hand.
Charger roller (-680V DC+1.8kV/380Hz AC)
Drum surface potential (Vo)=-680V±25V
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FS-600/FS-680
Operation theory
Operation overview
The diagram below is to explain how the DC bias is weighted by AC. Note that the bias is increased to erase the residual latent image while the paper does not exists below the drum unit.
Main motor activation
Paper (length) 0.9 kV 220V 1.8 kVp-p (380 Hz) 0V
-0.9 kV
-680V
-1580V -1.8 kV
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FS-600/FS-680
Operation theory
Operation overview
Exposure
The exposure process is done by emitting the laser light onto the photoconductive drum. The laser light (780 nm wavelength) beam is dispersed by scanning use of the polygon motor and polygon mirrors perpendicular to the (portrait) image. Various lenses and mirrors are housed in the scanner unit and used to adjust the diameter of the laser beam and focalize it at the drum surface.
Laser Scanner
A simplified diagram of the laser scanner is depicted as follows.
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FS-600/FS-680
Operation theory
Operation overview
SCANNER DIAGRAM
Downverting mirror Automatic power controller F-theta lens
Towards the drum
Pin photo detector
g Cylindorical lens Laser diode
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FS-600/FS-680
Operation theory
Operation overview
SURFACE POTENTIAL
The laser beam is continually switched depending on the print data. It is on for a black (exposed) dot and off for a white (blank) dot. Since the drum surface is evenly charged, whenever it is illuminated by the laser beam, the electrical resistance of the photoconductor is reduced, the potential on the photoconductor is also lowered. Resulted on the drum surface is an electrostatic image which represents the data to print. Note that the area to be printed black has the low potential, constituting a "negatively exposed" image.
LASER BEAM
LASER BEAM -680V
OPC layer
-80V 0V
Aluminum cylinder
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FS-600/FS-680
Operation theory
Operation overview
Development
The development process visualizes the electrostatic image on the drum using toner. The dual component development system is used in the printer that uses a mixture of ferrite carrier and toner as the developer powder. These two developing powder are constantly agitated within the developer unit for uniform mixture by the mixers. The mixing ratio (T/C) is monitored by the toner sensor. As the toner supply dwindles, it is automatically supplied from the toner container (TK-16). Toner is fed from the container when the sponge roller revolves as driven by the toner motor in the developer unit. The developing powder is adhered on the magnet roller in a constsant thickness. The magnet roller, as it rotates following the drum unit, applies the toner so that it fills the "developing gap" between the drum and the magnet roller. The toner in the developing powder filling the developing gap is attracted onto the area on the drum that is exposed to the laser light (low potential) and is rapelled in the area not exposed to the laser light. Thus this mechanism develops the toner image on the photoconductive drum according to the print data. The amount of the carrier powder in the developing powder remains permanently constant as it is caught by the magnetism on the magnet roller.
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FS-600/FS-680
Operation theory
Operation overview
Toner feed roller Toner D eveloping pow der (C arrier+toner)
M ix er
Toner feed m otor
C ontroller Toner density sensor DC C arrier
D eveloping roller P hotoconductor
Toner
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FS-600/FS-680
Operation theory
Operation overview
Anti-background effect bias
Vo=-680V DC+1.8kVp-p AC (380Hz)
Vd=-450V
Development
-70V
The toner sensor is fit inside the developer unit (process unit) and has the following components. The decrease in the toner-to-carrier mixture ratio at the developer bottom is detected by the toner sensor at its diaphragm. The toner sensor then generates the request the engine controller to drive the toner motor. Subsequently, when the toner-tocarrier mixture is restored, the toner motor stops. If the sensor's request for feeding toner does not succesfully restore the toner-to-carrier mixture ration, the treatment mode is introduced. Nonetheless the treatment mode is not able to restore it, the printer indicates the message that the toner is run out.
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Operation theory
Operation overview
Transfer
The transfer process lets the image developed by the toner on the photoconductive drum electrically transferred onto paper. The conductive rubber roller applies the positive bias at the back side of paper, allowing the negatively charged toner transferred onto the paper. The transfer roller must be handled with great care because oily substances such as grease can harm not only the transfer roller but the photoconductive drum and other components in the general proximity.
Paper
Max. 2.3 kV
Transfer roller
Fusing
The toner on the paper is permanently fused onto the paper as it passes between the heat roller and the pressure roller in the fuser unit. The toner is molten and pressed into the paper. The heat (top) roller has the halogen lamp which is continuously turned on and off by the thermistor (temperature sensor) to maintain the constant temperature on the heat roller
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FS-600/FS-680
Operation theory
Operation overview
surface. The temperature is approximately 150°C for model FS-600 and 160°C for model FS-680 while the printer is adle; approximately 165°C for model FS-600 and 182°C for model FS-680 while printing. The heat roller is resin coated by florin to prevent toner from accumulating on the roller. Care must be taken while handling the heat roller not to scratch the roller surface as doing so may result in print problems. The pressure (bottom) roller is made of the heatresistant silicon rubber. This roller is used to strongly press the paper towards the heat roller by means of coil springs.
Fuser
The temperature of the heat roller is constantly monitored by the engine controller using the thermistor and triac. Should the temperature of the heat roller excess the predetermined value, the thermo-cutout is activated to effectively disconnect the power to the halogen heater.
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FS-600/FS-680
Operation theory
Operation overview
Drum cleaning
After the transferring process, the excessive toner remaining on the drum surface is scraped off by the cleaning blade. The toner is conveyed through the drum unit conveyer for collection in the waste toner reservoir inside the toner container. The maximum capacity of the waste toner reservoir exceeds the amount of the toner inside the toner container, making the chance of toner overfilling unlikely. The drum surface can be uniformly recharged by the charging roller without requiring the explicit erasure of the residual charge (remaining latent image) for the next electrophotographic cycle.
Cleaning blade
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FS-600/FS-680
Operation theory
Operation overview
Typical photo process timing chart
The following chart shows the signals used for photo processing. These signals activate the corresponding device in the following timing sequences. A simple description for these signals follows.
MOTOR
PAPER
MHVDR (DC)
MHVDR (AC)
BIAS
THVDR
MHVDR (Main High Voltage DRive)----Turns the main charger voltage on and off. The drum is charged when both AC and DC biases are on. BIAS----Turns the developer bias on in synchronization with charging the drum. The difference of the chargring and developing biases results in the time phase. The reverse bias is applied in other processes than the charging process. THVDR (Transfer High Voltage Drive----Turns the transfer bias on. The reverse bias is applied while the paper is not present on the transfer roller, preventing contamination at the back of the paper.
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FS-600/FS-680
Operation theory
Operation overview
Paper feeding system
The paper feeding system picks up paper from the cassette, manual feed tray, or, if installed, the papper feeeder PF-16. Paper is fed at a precise timing in synchronization with data processing. The paper feeding system finally delivers the printed page to either the face-down or face-up tray as manipulated by the user. The figure below shows the components comprising the paper feeding system and the paths through which the paper travels. The sensors, solenoids, etc., are described in the following pages.
PAPER FEEDING DIAGRAM
' &
) ( % $ # " !
! Paper cassette. " Paper feed roller. # Registration rollers+clutch. $ Drum. % Transfer roller. & Fuser rollers.'Laser scanner unit.(Process unit [PU-1].)Toner container [TK-16].
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Operation theory
Operation overview
Paper control signals
The following diagram shows signals for controlling sensors and rollers during guiding paper. The engine controller provides these signals in conjunction with the electrophotography process that is driven by the main logic controller system.
E ng ine C ontrolle r
R E S IT * M OTDR R E S ID R PA P E R E X IT J* FE DDR
F ace-d o w n ro lle rs
M ain m o tor
E xit se nsor H e at R o lle r E xit rollers P re ssu re R oller Tra nsfer roller R e gist ro lle rs F eed clu tch P ap er se nsor P ap er C assette D rum R e gist. clu tch R e gist se nsor
M anu al fe ed tray
C lu tche s
S en sors
R o lle rs
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FS-600/FS-680
Operation theory
Operation overview
Sensors
A photo penetration type sensor is used for the paper feed sensor, registration sensor, and the exit sensor (fuser). While paper is not present as shown in !, the reflector at one end of the sensor's actuator is normally seated inbetween the photo transmitter and the sensor. While the paper is present, the reflector is pushed up by the paper and the light is interrupted as shown in ", thus triggering the sensor.
Paper jam sensing
The registration sensor and the exit sensor (at the fuser) keep track of the paper passing through the paper path by metering the time of period elapsed since the registration sensor is triggered. Paper must also pass the registration sensor when it comes from the paper cassette in a predetermined period of time that begins with energizing of the feed clutch (FEDDR). In case the trailing edge does not release the sensor at the exit sensor in the predetermined period of time, the engine controller determines that paper is jammed. The engine controller stops printing and call the user's attention by flashing the JAM indicator. When the jammed paper is removed and the top cover or the paper cassette is closed, the printer resumes printing. If paper was jammed after clearing the exit sensor, the same page will not re-printed.
4-19
FS-600/FS-680
Operation theory
Operation overview
Cassette feeding
The main logic controller sends the PRINT* signal to the engine controller after it has finished processing data. The engine controller CPU then starts the main motor (MOTDR), polygon motor, registration rollers, and the fuser heater. The engine controller then issues the FEDDR signal which connects the main motor power to the paper feed tire. The tire feeds the top sheet in the paper stack in the cassette towards the registration rollers until the paper reaches the registration sensor (RESIT*). As the engine controller sends VSREQ* to the main logic controller, the main logic controller subsequently issues VSYNC* to activate the registration rollers, thus starting to feed paper forwards to the drum. The paper is advanced to the drum, to the fuser unit, triggering the exit sensor (EXITJ*), and finally delivered either to the face-down or face-up tray as manipulated by the user.
Manual paper feeding
The printer is set to manual feeding mode when the FEED[/SIZE] key is manipulated together to light the MANUAL indicator. In the manual feed more, the paper placed on the manual feed tray is detected by the registration sensor (RESIT*) and the printer does not attempt to feed the paper in the paper cassette. The printer is also featured with the automatic manual feed mode. In the automatic manual feed mode, the printer automatically switches to feeding the paper on the manual feed tray regardless of the current paper feed source. This mode is activated by simply setting the printer off-line and placing the paper on the manual feed tray. Then, when the DATA indicator begins flashing, the ONLINE[/STATUS] key must be pressed to bring the printer back on-line to start printing.
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FS-600/FS-680
Operation theory
Operation overview
Basic engine functions
This section presents a general functional overview of the engine system of the printer. It was intended to provide a comprehensive knowledge on basic functions that the engine system performs during printing. The following printer functions are covered: · · · · Engine controller system Main logic controller system Paper feed system Power supply system
4-21
FS-600/FS-680
Operation theory
Operation overview
Engine controller system
The engine controller provides control over all print engine activities. It drives laser depending on the video data transmitted from the main controller, provides control over the devices for paper transportation, such as motors, clutches, solenoids, the heater lamp, the eraser, etc., and collects information given by the sensors. The engine controller is also responsible for the following systems, explained step by step through the following pages:
Laser scanner control
In order to activate the laser scanner, the engine controller does the following tasks: · · · · · · · Generation of timing to forcibly turn on laser Laser diode current limit Output for laser power control Output for beam detection (photo sensor) Polygon motor activation Detection of polygon motor readiness Control for polygon motor output frequency (multi steps)
Polygon motor control
The output frequency signal to the polygon motor is generated by the main logic controller system clock (36.52456 MHz [FS-600] or 45.95012 MHz [FS-680]). The polygon motor has the revolution of 13571 rpm [FS-600] or 17142 rpm [FS-680] and the input frequency is 1357.1 Hz [FS-600] or 1714.2 Hz [FS-680]. As the laser beam reaches the beam detector sensor, the sensor board generates the horizontal synchronous signal (PD*). This signal makes the main logic controller consequently turn the video output signal (VDO*) and the APC signal (LONB*) high which respectively activate the laser light and the APC controller. The engine CPU attempts to detect the horizontal synchronization signal so that the laser diode is normally triggered. If the horizontal synchronization output is not found after the laser driving current control (LENB*) is set low, the engine CPU recognizes it as the failure on the APC board and gives the E3 error.
4-22
FS-600/FS-680
Operation theory
Operation overview
Safety interlock
For the safety purpose, and in order for the product to conform to the safety standards required by the U.S. FDA and several European regulations (IEC 825), the printer is facilitated with the safety interlock circuit. When the top cover is open, the interlock microswitch disconnects DC power (+24V). This 1 causes the engine CPU to forcibly turn down the laser emission. At the same time, the shatter mechanism is activated to block the laser beam not to reach the drum unit.
In t er lo ck sw it ch
+ 24V
En g in e CPU
Fan
M ain m otor
Hi-vo lt ag e u nit
Sh u t t er Scan n er u nit
Dr u m
Total page counter and permenent parameters strorage
An EEPROM (Electrically Erasable Memory) is used to retain those information that should be intact even while the printer power is off--total page count and permanent parameters such as margins, fonts, etc. This EEPROM also keeps information such as the printer's ID (serial number) which should be kept belonging to the printer. Therefore, if the engine controller board (KP-589 [FS-600] or KP-717 [FS-680]) is changed during service, the EEPROM, U202, should be removed from the old board and fit on the new board. Otherwise, all statistic information will be lost.
The interlock microswitch, when activated as above, disconnects also the high-voltage output, main motor, fan motor, and the semiconductor switch for the fuser heater.
1
4-23
FS-600/FS-680
Operation theory
Operation overview
Engine CPU pin assignment
This is a 4 bit CPU, HD404369. The pin assignment is tabled below. The device in the Related device ... column means those which the signal is forwarded to. Note that only the pins with meaningful assignment are shown below and those for the power line and ground are excluded.
ENGINE CPU PINS
Pin No 1 2 3 4 5 6 7 8 9 10 11 20 21 22 23 24 25 26 27 28 29 30 31 34 Signal name LASER* OUTPE RDY* VSREQ* VSYNC* CPRDY PRINT* SYSCLK CBSY* SC EGIR* THERM ILOCK* PFPER* PFSEN* SBSY* CINH* THSBY HEAT HVON MDCON VHVDR THVDR PD* Port ID R60 R61 R62 R63 R70 R71 R72 SCK SI SO R03 R30 R31 R32 R33 R40 R41 R42 R43 R50 R51 R52 R53 INT0 Direction OUT OUT OUT OUT IN IN IN IN IN IN/OUT OUT IN IN IN IN OUT OUT OUT OUT OUT OUT OUT OUT IN Description Laser emission permission Video I/F control Video I/F control Video I/F control Video I/F control Video I/F control Video I/F control Video I/F control Video I/F control Video I/F control Video I/F control Fuser temperature control Interlock detection PF-16 paper-empty detection PF-16 presence detection Video I/F control Video I/F control Fuser temperature control Fuser heater control High-voltage control High-voltage control High-voltage control High-voltage control Pin photo-sensor input Positive Positive Positive Positive Positive Negative Negative Negative Negative Negative Negative Negative Negative PF-16 PF-16 Controller Controller Fuser unit Fuser unit High-voltage unit High-voltage unit High-voltage unit High-voltage unit Scanner Negative Negative Logic Negative Positive Negative Negative Negative Related device under control Scanner Controller Controller Controller Controller Controller Controller Controller Controller Controller Controller Fuser unit
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FS-600/FS-680
Operation theory
Operation overview
Pin No 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
Signal name MMTCLK PLGRDY* EECS EESK EEDIO KLED1 KLED2 KLED3 KLED4 KLED5 KLED6 EXITJ* RESIT* FANLOW FANDR* PLGDR* PFMDR* MOTDR FEDDR RESIDR TNMDR KSW1* KSW2* KSW3* KSW4* TNMER* TONER TNCON* PAPER THMER
Port ID INT1 ENVB D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 R80 R81 R82 R83 R90 R91 R92 R93 R10 R11 R12 R13 R20 R21 R22 R23 RA1
Direction IN IN OUT OUT IN/OUT OUT OUT OUT OUT OUT OUT IN IN OUT OUT OUT OUT OUT OUT OUT OUT IN IN IN IN IN IN IN IN IN
Description Main motor clock input Polygon motor readiness E PROM chip select E PROM clock E PROM data Front panel LED control Front panel LED control Front panel LED control Front panel LED control Front panel LED control Front panel LED control Exit sensor input Registratioin sensor input Fan motor revolution control Fan motor on/off control PLG motor on/off control PF motor on/off control Main motor on/off control Feed clutch activation Registration clutch activation Toner motor on/off control Front panel SW1 Front panel SW2 Front panel SW3 Front panel SW4 Toner motor error signal Toner sensor signal Toner container presence Papser cassette open/close Thermistor disconnection detection
2 2 2
Logic Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Negative Negative Positive Negative Negative Negative Positive Positive Positive Positive Negative Negative Negative Negative Negative
Related device under control Main motor Scanner E PROM E PROM E PROM Front panel Front panel Front panel Front panel Front panel Front panel
2 2 2
Fan motor Fan motor Scanner PF-16
Front panel Front panel Front panel Front panel Toner motor
Negative Positive Positive
4-25
FS-600/FS-680
Operation theory
Operation overview
Power supply
The power supply contains the AC and DC power inputs and outputs. The high voltage bias generator circuit is mounted on a separate board. A simplified schematic diagram is shown on a following page.
AC INPUT AND RECTIFIER
The primary AC input power arrives at CN0 and enters AC line filter circuit (L1, C3, C4, etc.). BD1 rectifies it to DC; Q1 provides switching on it for downverting by T1 to develop +24V and +5V AC.
24V DC POWER LINE
The 24V AC appearing at the secondary side of T1 is rectified by D2, smoothed by C15, and distributed through CN1. The 24V DC line is represented as VDD or VDDCOM and used to feed the following engine component: · · · · · Clutches (registration, paper feed) Fans High-voltage generator (board) Main motor Motor within the option unit
The 24V DC power is forcibly interrupted for safety whenever the printer's top cover is open. For details, see the Safety interlock section, page 4-23.
5V DC POWER LINE
The 5V AC at the secondary output of T1 is rectified by D3 and C17 to smooth DC, then delivered to CN1. The +5V DC power is referred to as VCC and is comprehensively utilized by the main controller, sensors, engine controller, etc.
POWER PROTECTION CIRCUIT
A fraction of the +5V DC power is connected to the protection diode PC1 to render protection in the power supply. In case the output of the +5V DC line is short-circuited, the diode segment of PC1 drives the transistor segment of PC1 to turn on Q2 which in turn disconnects the output of switching regulator Q1.
4-26
FS-600/FS-680
Operation theory
Operation overview
FUSER HEATER POWER CONTROL
In the primary circuit, the fuser heater and thermo-cut device are wired in series across CN2. The heater is switched on and off as being controlled by TRIAC TRC1. TRC1 turns on the heater when HEAT* (pin 5) at CN1 is energized by a command from the enginen controller. The diagram on the next page shows a simplified diagram for the power supply circuit, exampled by the U.S. version unit. For details on the fuser function, refer to Fusing on page 4-13.
4-27
FS-600/FS-680
Operation theory
Operation overview
+
POWER SUPPLY CIRCUIT
4-28
+
+
+
FS-600/FS-680
Operation theory
Operation overview
Main logic controller system
The main logic controller system does the following: · · · · Communicates with the host computer to receive data at on