Text preview for : Kyocera FS-1000 Plus Service Manual.pdf part of Kyocera FS-1000 Kyocera FS-1000 / FS-1000 Plus Laser Printer Service Manual + Parts Catalogue
Back to : Kyocera FS-1000.part1.rar | Home
Page printers
FS-1000/1000+ Series Combined Service Manual C Kyocera Corporation 2001 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 reader is asked to excuse any technical inaccuracies or typographical errors in the present edition. No responsibility is assumed if accidents occur while the service person is following the instructions in this manual. The contents of this manual are protected by copyright. No part of the manual may be reproduced or copied by any means without the permission of the copyright holder. Information 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 communications. 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. Changes or modifications not expressly approved by the manufacturer for compliance could void the user's authority to operate the equipment. Important notice to service person Before attempting service on the equipment, including disassembling, reassembling, troubleshooting, and adjustment, read this manual carefully. During performing service, use extreme care to avoid possible electric shock hazard, burn, and human injuries. Make sure the printer is not provided with any safety facilities other than those primarily intended for the safety of users.
FS-1000/FS-1000+
About the chapters
This manual contains informations pertaining to service and maintenance of the laser printers FS1000/1000+. This manual contains the following chapters:
Chapter 1: Chapter 2: Chapter 3: Chapter 4: Chapter 5: Chapter 6:
Product Information Installation/Operation Maintenance/Adjustments Operation Overview Disassembly Troubleshooting Contents
Appendix A: Diagrams Appendix B: Status Page Appendix C: Interface
Contents
Contents
FS-1000/FS-1000+
REVISION HISTORY
Version 1.00 1.0A
Date 10-May-2000 25-May-2000
1.0B 2.00
14-July-2000 1-Feb-2001
Replaced Pages Remarks 2-10, 3-7, 3-10, 4-5, 4-6, 4-9, 4-11, 4-21, 4-24, 5-25, 5-26, 6-9, 6-10, 6-11, A-8, B-6 5-31 Overall revision Combined with FS-1000+ model
TO OBTAIN THE LATEST PRINTER DRIVERS AND UTILITIES, VISIT US AT OUR INTERNET HOME PAGE: http://www.kyocera.com/w2k
FS-1000/FS-1000+
Chapter 1
Product Information
Chapter 1 Contents
1-1 Printer specifications ...................................................................................................................... 1-3 1-1-1 Specifications ............................................................................................................................ 1-3 (1) Engine ................................................................................................................................. 1-3 (2) Controller ............................................................................................................................. 1-4 (3) Weight and dimensions ....................................................................................................... 1-4 (4) Power requirements ............................................................................................................ 1-5 (5) Environmental requirements ............................................................................................... 1-5 1-2 Names of parts ................................................................................................................................. 1-6 1-2-1 Name of parts ............................................................................................................................ 1-6 1-3 Safety information ........................................................................................................................... 1-7 1-3-1 Safety information ...................................................................................................................... 1-7 (1) Laser safety ......................................................................................................................... 1-7 (2) Laser notice ......................................................................................................................... 1-7 (3) Laser caution label on the scanner unit ............................................................................... 1-7 (4) CDRH regulations (U.S.A.) .................................................................................................. 1-9 (5) Ozone concentration ........................................................................................................... 1-9 (6) FCC statement (U.S.A.) ...................................................................................................... 1-9 (7) Optional equipment ........................................................................................................... 1-10 (8) Important note on the interface connectors ....................................................................... 1-10 (9) Canadian Department of Communications compliance statement ................................... 1-10 (10) Avis de conformité aux normes du ministère des Communications du Canada ............. 1-10 (11) ISO 7779 ......................................................................................................................... 1-10 1-4 Environmental requirements ........................................................................................................ 1-11 1-4-1 Environmental conditions ........................................................................................................ 1-11 (1) Clearance .......................................................................................................................... 1-12 (2) Places to avoid .................................................................................................................. 1-13 (3) Note on power ................................................................................................................... 1-13 (4) Removing the printer ......................................................................................................... 1-14 1-5 About the toner container ............................................................................................................. 1-15 1-5-1 Toner container ....................................................................................................................... 1-15 (1) Toner container handling ................................................................................................... 1-15 (2) Toner container storage .................................................................................................... 1-16
1-1 Printer specifications
1-1-1 Specifications (1) Engine Item Print method Print speed (when printing multiple page) Resolution (dpi) Smoothing FS-1000 FS-1000+
Electrophotography laser scan 10 pages/min. 12 pages/min.
600 horizontal/600 vertical KIR (2,400 horizontal/600 vertical) First print 15 seconds or less (A4 or letter, 23 °C), (42 seconds or when less depends on input data reverting from sleeping) Warm-up time at 23 °C 25 seconds Maximum duty cycle (A4) 100,000 pages of printing or 3 Process unit life expectancy years, whichever reached first Developing Mono component developer Laser diode Visible laser Main charger Scorotorn positive charging Transferring Negative charger roller Separation Curvature separation Drum cleaning Blade Drum discharging Eraser lamp (LED array) Fuser Heat roller and press roller Paper Plain paper: Legal to A5 Capacity of paper feed trays Cassette: 250 sheets, (80 g/m2 [0.11 mm thickness]) MP tray: 50 sheets Capacity of output trays Face-up: 30 sheets, (80 g/m2 [0.11 mm thickness]) Face-down: 150 sheets
FS-1000/1000+
1-3
(2) Controller Item CPU System ROM Font ROM Optional font ROM (Dip socket) Main (Video) RAM Additional RAM (DIMM slot) FS-1000 FS-1000+
PowerPC401B2/75MHz 4 MB MASK DIMM 2 MB (16 M bit × 1) 1 MB (Optional KPDL2 Upgrade kit) 4 MB (16 M bit × 2) Max. 132 (4 + 128) MB (16/32/ 64/128 MB DIMM × 1 slot) Host interface Parallel: High-speed, bidirectional (IEEE1284) Serial : R S - 2 3 2 C / R S - 4 2 2 A , M a x . speed: 115.2 Kbps (optional serial interface board IB-10E) KUIO-LV : KUIO-LV (3.3 V) Page description language Prescribe 2e Standard emulation modes PCL6, Diablo 630, IBM proprinter X24E, Epson LQ850, Line printer, KPDL2 (Optional)
(3) Weight and dimensions Item Main unit FS-1000 37.76 cm (14.9 inches) 22.2 cm (8.7 inches) 37.45 cm (14.7 inches) 9.5 Kg (20.94 lb.) FS-1000+
Width: Height: Depth: Weight: (excl. protrusions)
FS-1000/1000+
1-4
(4) Power requirements Item Voltage/current FS-1000 FS-1000+ 120 V AC ±10 %, 60 Hz ±2 %/4.9 A 220 - 240 V AC ±10 %, 50/60 Hz ±2 %/2.6 A 120 V AC model: 569 W 220 - 240 V AC model: 569 W 120 V AC model: 5 W 220 - 240 V AC model: 6 W
Watts
US/Canada: 120 V AC ±10 %, 60 Hz ±2 %/4.4 A Europe/Asia: 220 - 240 V AC ±10 %, 50/60 Hz ±2 %/2.2 A Normal operation: 120 V AC model: 233 W 220 - 240 V AC model: 506 W Standby (Ready): 41 W 120 V AC model: 6 W Sleeping: 220 - 240 V AC model: 6 W
(5) Environmental requirements Item Operating temperature and humidity Maximum altitude Noise emission (Excluding peaks, measured at 1 m from printer, as per ISO7779) FS-1000 10 to 32.5 °C (50 to 90.5 °F), 20 to 80 %RH 2,000 m (6,500 feet) Maximum: 48 dB(A) , Standby: 28 dB(A) FS-1000+
FS-1000/1000+
1-5
1-2 Names of parts
1-2-1 Name of parts
Face-up output tray Face-down output tray
Top cover
Side cover (Expanding memory slot and optional KPDL ROM socket inside) MP tray Cassette Front cover
Optional interface slot cover Parallel interface connector
Power switch Inlet
Figure 1-2-1 Name of parts
FS-1000/1000+
1-6
1-3 Safety information
1-3-1 Safety information (1) Laser safety This printer is certified as a Class 1 laser product under the U.S. Department of Health and Human Services (DHHS) Radiation Performance Standard according to Radiation Control for Health and Safety Act of 1968. This means that the printer does not produce hazardous laser radiation. Since radiation emitted inside the printer is completely confined within protective housings and external covers, the laser beam cannot escape from the printer during any phase of user operation. (2) Laser notice 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. (3) Laser caution label on the scanner unit The laser scanner unit has the following label affixed atop. Observe these cautionary statements and figures when handling the laser scanner unit.
FS-1000/1000+
1-7
WARNING
Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
Laser radiation warning
Label on the scanner unit (Inside the printer)
Label on the left cover rear side
Figure 1-3-1 Laser caution label
FS-1000/1000+
1-8
(4) 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. (5) Ozone concentration The printers generate ozone gas (O3) which may concentrate in the place of installation and cause an unpleasant smell. To minimize concentration of ozone gas to less than 0.1 ppm, we recommend you not to install the printer in a confined area where ventilation is blocked. (6) FCC statement (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 communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interferences 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. Changes or modifications not expressly approved by the manufacturer for compliance could void the user's authority to operate the equipment. Shielded circular cable should be used for interfacing with the computer.
FS-1000/1000+
1-9
Any modification without prior permission may cause harmful interference. 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. (7) Optional equipment The printer may be optionally installed with the following units: · PK-6 KPDL2 Upgrade kit · IB-10E Serial interface board kit · PF-17 Paper feeder (250 sheets) (8) 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 noncertified peripherals is likely to result in interference to radio and TV reception.
(9) Canadian Department of Communications compliance statement This Class B digital apparatus complies with Canadian ICES-003. (10) Avis de conformité aux normes du ministère des Communications du Canada Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada. (11) ISO 7779 Maschinenlärminformationsverordnung 3. GSGV, 18.01.1991: Der höchste Schalldruckpegel beträgt 70 dB(A) oder weniger gemäß ISO 7779.
FS-1000/1000+
1-10
1-4 Environmental requirements
1-4-1 Environmental conditions The Environmental requirements section on page 1-5 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 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. 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 1-5). 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 next page).
FS-1000/1000+
1-11
(1) Clearance Allow the necessary minimum clearance on all sides of the printer as diagrammed below. 5
4 1
2
3
Figure 1-4-2 Clearance
Ref. 1 2 3 4 5
Clearance Left Front Right Back Above
Dimensions 25 cm (9-7/8 inches) 50 cm (19-11/16 inches) 25 cm (9-7/8 inches) 40 cm (15-3/4 inches) 30 cm (11-13/16 inches)
FS-1000/1000+
1-12
(2) 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 fumigating 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 6,500 feet or 2,000 meters above sea level. (3) Note on power Use only the power source voltage conforming to the printer's rated power voltage. Do not use other power sources. · Disconnect the printer from the power source before attempting removal or replacement 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 incorporated in the printer's AC primary circuit, an easily accessible socket outlet must be provided near the equipment.
FS-1000/1000+
1-13
(4) Removing the printer Observe the following precautions in removal and transportation of the printer. · Be sure to repack the printer in its original carton. · Do not leave the printer, toner container, process unit and other printer modules inside a vehicle if the outdoor temperature is more than 25 °C. As unexpectedly high temperature may develop inside when a vehicle is parked for a long period of time, the drum, toner container, process unit and the supplies should be removed from the vehicle. The vehicle during transportation should be parked in the shade or with the window open to allow minimum air circulation or the adequate air conditioning should be made. · Should the printer be left in a vehicle, it may not be exposed to the temperature change of more than 7 °C within 30 minutes. · Before removing the printer to a warm place, wrap it in a blanket, etc., before crating it. Allow approximately two to three hours after having moved after uncrated. Failure to observe the above may result in moisture condensation which will affect the performance of the printer.
FS-1000/1000+
1-14
1-5 About the toner container
1-5-1 Toner container The printer should use a Kyocera TK-17 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 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 of control over how such refilled toner could affect the print quality and the reliability of the printer.
(1) Toner container handling To loosen and mix the toner inside before use, with the label side down, thoroughly shake the toner container 1 horizontally at least five times.
1
Figure 1-5-1 Toner container handling CAUTION Do not attempt to disassemble or refill the toner container.
FS-1000/1000+
1-15
(2) Toner container 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 satisfies the following environmental conditions: Temperature: Humidity: NOTE -20 to 40 °C (-4 to 104 °F) 15 to 90 % RH
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. 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.
CAUTION
FS-1000/1000+
1-16
Chapter 2
Installation/Operation
Chapter 2 Contents
2-1 Unpacking ......................................................................................................................................... 2-3 2-1-1 Unpacking and inspection ......................................................................................................... 2-3 2-2 Installing the printer ........................................................................................................................ 2-4 2-2-1 Installing the toner container ..................................................................................................... 2-4 2-2-2 Expanding memory .................................................................................................................... 2-8 (1) Minimum memory requirements .......................................................................................... 2-8 (2) DIMM specifications ............................................................................................................ 2-8 (3) Notes on handling DIMM ..................................................................................................... 2-9 (4) Installing the DIMM ............................................................................................................ 2-10 (5) Testing the expansion memory ......................................................................................... 2-11 (6) Installing KPDL .................................................................................................................. 2-12 Getting access to the KPDL ROM socket ............................................................................... 2-13 2-3 Using the operator panel ............................................................................................................... 2-14 2-3-1 Operator panel ......................................................................................................................... 2-14 2-3-2 Remote operation panel .......................................................................................................... 2-15
2-1 Unpacking
2-1-1 Unpacking and inspection The package should contain the printer and the accessories as shown in the figure below. Remove the printer and all the accessories from the package.
Printer
Toner container (TK-17)
Power cord
Installation manual
Cleaning cloth
Kyocera digital library CD-ROM
Figure 2-1-1 Unpacking 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.
FS-1000/1000+
2-3
2-2 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 PF-17. For details, refer to the Paper feeder PF-17 Service Manual.
2-2-1 Installing the toner container 1. Open the top cover all the way. 2. Confirm that the lock lever #1 1 is in the release (forward) position. If not, pull it forward until it is in the release position.
1
Figure 2-2-1 Confirming the lock lever #1
FS-1000/1000+
2-4
3. Take the toner container 2 from the bag. Hold it with the protective seal (orange-colored) facing up. Shake the toner container 2 horizontally at least five times. This ensures that the toner is evenly distributed inside.
2
Figure 2-2-2 Shaking the toner container 4. Carefully remove the protective seal 3.
3
Figure 2-2-3 Removing the protective seal
FS-1000/1000+
2-5
5. Install the toner container 2 into the printer. 6. Push firmly on the top of the toner container 2 at the positions marked [PUSH HERE].
2
Figure 2-2-4 Installing the toner container
FS-1000/1000+
2-6
7. Push the lock lever #1 1 to the lock position. 8. Close the top cover 4.
1
LOCK UNLOCK
4
Figure- 2-2-5 Locking the toner container NOTE The printer is shipped from the factory with no toner supplied in its developer (Process unit). When the printer is first switched on after the toner container is installed in the manner above, there will be a delay of several minutes before the printer gets ready to print a job. This delay is necessary for the printer to fill the developer reservoir with a sufficient amount of toner to continuously support a print job. The period of time is approximately 15 minutes. If the toner low or replace toner indication does not go off after installing the new toner container, take the toner container out once, shake it well, then install again.
UNLOCK
LOCK
FS-1000/1000+
2-7
2-2-2 Expanding memory The FS-1000/1000+ comes standard equipped with 4 MB of main memory. Printer memory can be expanded to up to the maximum 132 MB (4 MB + 128 MB) by installing an optional DIMM (Dual In-line Memory Module). (1) Minimum memory requirements Refer to the table below for minimum memory requirements in various environments. Resolution 300 dpi 600 dpi 2 MB 2 MB 10 MB
Printing environment HP LaserJet 5P (factory setting) HP LaserJet 5P with resource protection
(2) DIMM specifications Memory size in MB Number of pins Access speed Parity Bus width 8, 16, 32, 64, 128 72 80 ns or faster Without 32 bits
FS-1000/1000+
2-8
(3) Notes on handling DIMM Before proceeding to install DIMM, read the following notes for handling the main board and DIMMs: · Protect the electronics by taking these precautions: · Before touching a DIMM, 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. · Touch the main board and DIMM only by the edges, not in the middle.
Figure 2-2-6 Handling DIMM
FS-1000/1000+
2-9
(4) Installing the DIMM The main board of the printer is equipped with one socket for memory expansion. Expansion memory is available in the form of DIMM (Dual In-line 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. Turn the printer's power switch off. Unplug the printer's power cable and disconnect the printer from the computer or the network.
WARNING
Remove the side cover 1 as shown in the figure below.
Step 1
Step 2
Remove one screw.
1
1
Figure 2-2-7 Removing side cover
FS-1000/1000+
2-10
Open the clips 2 on both ends of the DIMM socket 3. Insert the DIMM 4 into the DIMM socket 3 so that the notches on the DIMM align with the corresponding protrusions in the slot. Close the clips 5 on the DIMM slot to secure the DIMM.
Step 1
4
Step 2
2
2
5
5
3
Figure 2-2-8 Inserting the DIMM (5) Testing the expansion memory After installing DIMM 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.
FS-1000/1000+
2-11
(6) 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-6) into an empty socket on the printer's main board. For details on KPDL, refer to the KPDL Upgrade Kit Installation Manual.
Installing the KPDL ROM Before installing the KPDL ROM, carefully straighten the pins as follows.
NO
NO
Make sure that none of the pins are bent.
Figure 2-2-9 KPDL ROM To insert the ROM into its socket, position the ROM in the socket as shown. Make sure that the Ushaped 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.
U-shaped indentation
Socket U-shaped indentation
KPDL ROM
Figure 2-2-10 Inserting the KPDL ROM
FS-1000/1000+
2-12
Getting access to the KPDL ROM socket Remove the printer's side cover. Refer to Installing the DIMM on page 2-10. Locate the socket for inserting the KPDL ROM. This socket is marked as U03S.
KPDL ROM
Socket (U03S)
Figure 2-2-11 Getting access to the KPDL ROM socket
FS-1000/1000+
2-13
2-3 Using the operator panel
This section provides explanation on how to use the printer's operator panel for basic operation. For details, refer to the printer's User's Manual. 2-3-1 Operator panel The printer's operation 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.
1 2 3 4 5 6
Figure 2-3-1 Operator panel Table 2-3-1 Operator panel function No. Name 1 On line indicator 2 3 4 5 6 Data indicator Paper empty/ Paper jam indicator Toner indicator Cancel key Go key Function Indicates whether the printer is on-line or off-line. Indicates that the printer is receiving data. Indicates whether the paper cassette is empty or a paper jam has occurred. Flashes when toner is low, and light when toner is exhausted. Stops printing when pressed. · Switches the printer mode between on-line and off-line when pressed. If you continued to press the key for 10 or more seconds, service status page is printed. · Switches between the MP tray and paper cassette when the paper runs out. · Prints out any unprinted page.
FS-1000/1000+
2-14
2-3-2 Remote operation panel The remote operation panel is a utility that allows you to make basic printer settings from the computer connected to the printer or the network. For details on installation and usage, see the printer's User's Manual contained as an electronic file in the CD-ROM supplied with the printer.
1 5 6 7
2
3
4
Figure 2-3-2 Remote operation panel Table 2-3-2 Remote operation panel function No. Name 1 Message display Function Indicates printer status, the interface currently active, the resolution, the paper size, the number of copies set in the current interface, and error messages. Makes connection settings and operation settings between the printer and the computer. Makes connection settings for new printers. Displays help message. Performs the same function as the printer's Go key. Not displayed with non-network connection. Displays printer settings and confirmation items. Changes the printer 3D image in real time according to the printer's status. For example, if you open the printer's top cover, the top cover on the 3D image else open.
2 3 4 5 6 7
SETUP button CONNECT button HELP button GO button MENU button Monitor window
FS-1000/1000+
2-15
Chapter 3
Maintenance/Adjustments
Chapter 3 Contents
3-1 Maintenance/Adjustments .............................................................................................................. 3-3 3-1-1 Life expectancy of modules ....................................................................................................... 3-3 3-1-2 Toner container ......................................................................................................................... 3-4 (1) When to replace the toner container ................................................................................... 3-4 (2) Notes on changing toner container ..................................................................................... 3-4 (3) Toner container replacement .............................................................................................. 3-5 (4) Toner saver mode (EcoPrint) .............................................................................................. 3-6 3-1-3 Cleaning the printer ................................................................................................................... 3-7 (1) Cleaning the registration roller ............................................................................................ 3-8 (2) Cleaning the main charger wire ........................................................................................... 3-8 3-1-4 Updating the firmware ............................................................................................................... 3-9 (1) Firmware data format .......................................................................................................... 3-9 (2) Downloading controller firmware data ............................................................................... 3-10
3-1 Maintenance/Adjustments
3-1-1 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. Table 3-1-1 Life expectancy of modules Kit TK-17 PU-40 Module Toner container Process unit Nominal life (pages) 6,000 100,000 Remarks User-replaceable User-replaceable
FS-1000/1000+
3-3
3-1-2 Toner container Assuming an average toner coverage of 5 % with EcoPrint mode turned off, the toner container will need replacing approximately once every 6,000 printed pages. Table 3-1-2 Toner container Kit Life in pages TK-17 6,000 Based on letter or A4 size paper; average print density of 5 %. NOTE In the case of a new printer in which a toner kit has been installed for the first time, the number of copies that can be printed will be approximately 3,000.
(1) When to replace the toner container When the printer runs low on toner, the Toner indicator flashes on the operation panel. Be sure to promptly replace the toner container and clean the inside of the printer when this message appears. If the printer stops printing while the Toner indicator is lit, replace the toner container to continue printing.
(2) 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-17 is highly recommended for the optimum operation of the printer.
FS-1000/1000+
3-4
(3) Toner container replacement To replace the toner container, open the top cover. Pull lock lever #1 1 to the release [UNLOCK] position, then pull lock lever #2 2 to the release (right) position.
1 2
Figure 3-1-1 Releasing Lock lever #1 and #2 Gently remove the old toner container 3.
3
Figure 3-1-2 Removing the old toner container
FS-1000/1000+
3-5
Put it in the supplied plastic bag 4 and dispose of it.
4
Figure 3-1-3 Disposal of the old toner container 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 2-4 to complete installation of the new toner container. (4) 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 Remote operation panel utility (Refer to printer's User's Manual).
FS-1000/1000+
3-6
3-1-3 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. Open the top cover 1 and front cover 2. Lift the process unit 3 together with the toner container out of the printer.
1
2
3
Figure 3-1-4 Removing the process unit NOTE The drum in the process unit is sensitive to light. Never expose the drum even to normal office lighting (500 lux) for more than five minutes.
FS-1000/1000+
3-7
(1) Cleaning the registration roller Use the supplied wiper cloth 1 to clean dust and dirt away from the registration roller 2 (metal).
2
1
Figure 3-1-5 Cleaning the registration roller (2) Cleaning the main charger wire Slide the charger cleaner knob (green colored) back and forth 2 to 3 times, then return it to its [CLEANER HOME POSITION].
1
1
Figure 3-1-6 Cleaning the main charger wire After cleaning is done, install the process unit in the printer, using the reverse manner as above. Close the front cover and top cover.
FS-1000/1000+
3-8
3-1-4 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 flash memory chip in the printer. (1) Firmware data format Kyocera supplies the data to be downloaded in the following file format:
ds8844.dat
1 2 3 4
Identifies... 1 de: Engine firmware data* ds: Controller (system) firmware data dm: Operation panel message data* 2 49: FS-1000 88: FS-1000+ 3 Version of data (2 to 4 digits) 4 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-1000/1000+.
CAUTION
Do not turn off printer power while data are being downloaded (approximately one minute).
FS-1000/1000+
3-9
(2) Downloading controller firmware data To download controller firmware data, use Prescribe UPGR command as follows. CAUTION Downloading controller firmware takes several minutes. Do not turn power off during downloading.
Perform in sequence: Turn printer power on. Make sure the printer is ready. At the DOS prompt, send the following command to the printer: echo !R! UPGR "SYS";EXIT;>prn DOS COPY (/b) the data from the host computer to the printer. Confirm that downloading was finished normally by the LED indicator. (See the table below.) Turn power off. Turn power on again. Check the printer gets ready. If the display shows an error, see to the table below. Confirm the status page shows the new firmware version (See Service information on the status page on page B-4). If downloading fails, the printer indicates an error display using the LED indicators. To identify error, refer to the table which follows.
Download finished normally LED indicators LED indicators Description Download data error
Download errors Cause Deficit of a file header Deficit of a data header File checksum error File header version error Data header version error System download error Incompatibility of firmware and system DIMM board Confirm whether the firmware conforms to this printer. Replace the system DIMM board. Corrective action Obtain normal firmware.
Convention Red Green Meaning Slow flashing Fast flashing Lit Off
Defective system DIMM board
Download receiving error
Improper connection of parallel cable between PC and printer Defective parallel cable
Check the contact between PC and printer's interface connector. Replace parallel cable.
FS-1000/1000+
3-10
Chapter 4
Operation
Overview
Chapter 4 Contents
4-1 Electrophotographic system .......................................................................................................... 4-3 4-1-1 Electrophotographic cycle ......................................................................................................... 4-3 Process unit mechanism ........................................................................................................... 4-4 (1) Main charging ...................................................................................................................... 4-5 Photo conductive drum ............................................................................................................. 4-5 Charging the drum .................................................................................................................... 4-6 (2) Exposure ............................................................................................................................. 4-7 Laser scanner unit .................................................................................................................... 4-8 Drum surface potential .............................................................................................................. 4-9 (3) Development ..................................................................................................................... 4-10 (4) Transfer ............................................................................................................................. 4-11 (5) Fusing ................................................................................................................................ 4-12 Fuser unit mechanism ............................................................................................................ 4-13 (6) Cleaning ............................................................................................................................ 4-14 4-2 Paper feeding system .................................................................................................................... 4-15 4-2-1 Paper feed control ................................................................................................................... 4-16 Paper feeding mechanism ...................................................................................................... 4-17 4-3 Electrical control system .............................................................................................................. 4-18 4-3-1 Electrical parts layout .............................................................................................................. 4-18 4-3-2 Operation of circuit boards ..................................................................................................... 4-19 (1) Main board ........................................................................................................................ 4-19 (2) Engine board ..................................................................................................................... 4-20 Eraser lamp control circuit ...................................................................................................... 4-21 Heater lamp control circuit ...................................................................................................... 4-22 Polygon motor control circuit .................................................................................................. 4-24 (3) Power supply board ........................................................................................................... 4-25 (4) Bias board ......................................................................................................................... 4-26 (5) High voltage board ............................................................................................................ 4-27 Interlock switch ....................................................................................................................... 4-28
4-1 Electrophotographic system
Electrophotography is the technology used in laser printing which transfer 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 electrophotography system. 4-1-1 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.
Laser scaner unit Process unit
1 Main charging
2 Exposure
Drum
6 Cleaning
3 Developing 4 Transfer
5 Fusing
Fuser unit
Figure 4-1-1 Electrophotographic cycle The sections for main charging, exposure (drum), developing, and cleaning are modularized in one Process unit PU-40.
FS-1000/1000+
4-3
Process unit mechanism
3 2 ) *
Driving power train A For drum (From main unit) B For toner container, developing roller, etc. (From main unit) C For main unit (Transfer roller) D For toner container
/
¤
& ^
0
9
8 7
%
4 D A 6
< 1 * C $ # @ B !
5
1 Main charger unit 2 Charger wire 3 Grid 4 Developing roller 5 Gear Z14-Z18 6 Gear Z14-Z36 7 Gear Z18-Z36 8 Free gear Z40
9 Gear Z18-Z35H 0 MAG gear Z24H ! Mixer gear Z20 B @ Mixer gear Z20 A # DLP screw B $ DLP screw A % Drum ^ Drum gear Z35H
& Drum shaft * Drum gear Z36 ( Sweep gear Z13 ) Idle gear 18H / Cleaning blade ¤ Sweep roller < Waste toner reservoir
Figure 4-1-2 Process unit mechanism
FS-1000/1000+
4-4
(1) Main charging Photo conductive drum The durable layer of organic photoconductor (OPC) is coated over the aluminum cylinder base. The OPC tend 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 (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 source for a prolonged period can cause a print quality problem. The limit is approximately 500 lux for less than five minutes. If the drum (process unit) remains removed form the printer, it should be stored in a cool, dark place.
Photo conductive layer
Aluminum base cylinder
Figure 4-1-3 Photo conductive drum
FS-1000/1000+
4-5
Charging the drum The following shows a simplified diagram of the electrophotographic components in relation to the engine system. Charging the drum is done by the main charger unit A.
High voltage board YC-M CN1-A4
Bias board
Engine board MHVDR YC12-4
Main charging output
A
B
C
Zener board KP-788
Figure 4-1-4 Charging the drum As the drum C rotates in a "clean (neutral)" state, its photoconductive layer is given a uniform, positive (+) corona charge dispersed by the main charger wire B. Due to high-voltage scorotron charging, the charging wire can get contaminated by oxidization after a long rum. Therefore, it must be cleaned periodically from time to time using the method explained in chapter 3. Cleaning the charging wire prevents print quality problems such as black streaks.
FS-1000/1000+
4-6
(2) Exposure The charged surface of the drum A is then scanned by the laser beam from the laser scanner unit B.
B
A
Figure 4-1-5 Exposure The laser beam (780 nm wavelength) beam is dispersed as the polygon motor (polygon mirrors) revolves to reflect the laser beam over the drum. Various lenses and mirror are housed in the scanner unit, adjust the diameter of the laser beam, and focalize it at the drum surface.
FS-1000/1000+
4-7
Laser scanner unit
3
2
4 5
1 6
Diversion mirror
Figure 4-1-6 Laser scanner unit
Name 1 Laser diode 2 Cylindrical lens
Description Emits diffused, visible laser. Compensates the vertical angle at which the laser beam hits a polygon mirror segment. 3 Polygon mirror (motor) Has six mirror segments around its hexagonal circumference; each mirror corresponding to one scanned line width on the drum when laser beam scans on it. 4 F-theta lens The f-theta lens equalizes focusing distortion on the far ends of the drum. 5 Sensor mirror Bends the very first shot of a laser scan towards the beam detection sensor (6). 6 Pin photo sensor When shone by the sensor mirror above, this photo-sensor generates a trigger signal for the engine controller to start activating the paper feeding system.
FS-1000/1000+
4-8
Drum surface potential The laser beam is continually switched on and off 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 and 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 "positively exposed" image.
Laser beam
Exposed surface potential approximately +60 to +80 V Charged surface potential +400±15 V
OPC layer
Aluminum cylinder
Drum
Figure 4-1-7 Drum surface potential
FS-1000/1000+
4-9
(3) Development The latent image constituted on the drum is developed into a visible image. The developing roller A contains a 3-pole (S-N-S) magnet core B and an aluminum cylinder rotating around the magnet core B. Toner attracts to the developing roller A since it is powdery ink made of black resin bound to iron particles. Doctor blade C, magnetized by magnet D, is positioned approximately 0.3 mm above the developing roller A to constitute a smooth layer of toner in accordance with the roller revolution.
C
Magnetism 0.1 mm N S S
D
0.3 - 0.4 mm
E
N
S
A F
B
Developing bias output 275±5 V DC + AC
Bias board YC-B YC302-8 HVCLK
Engine board
YC11-5
Figure 4-1-8 Development The developing roller A is applied with the AC-weighted, positive DC power source. Toner E on the developing roller A is given a positive charge. The positively charged toner E is then attracted to the areas of the drum F which was exposed to the laser light. (The gap between the drum F and the developing roller A is approximately 0.3 mm.) The non-exposed areas of the drum F repel the positively charged toner as these areas maintain the positive charge. The developing roller A is also AC-biased to ensure contrast in yielding by compensating the toner's attraction and repelling action during development.
FS-1000/1000+
4-10
(4) Transfer The image developed by toner on the drum A is transferred onto the paper because of the electrical attraction between the toner itself and the transfer roller B. The transfer roller is negatively biased so that the positively charged toner is attracted onto the paper while it is pinched by the drum and the transfer roller.
A
B
Transfer bias
High voltage board YC-T YC1-A5 YC1-A7 YC1-A8
Bias board
Engine board THVDR YC12-1 HVISEL YC11-9 PSEL YC11-7
Figure 4-1-9 Transfer The nominal transfer bias is set to approximately -1.8 kV (limit) with the -6 µA current. Since the ideal potential of the transfer bias depends on the thickness of paper, the bias is raised to approximately -2.5 kV/-6 µA for thicker paper. On the other hand, the bias current is reduced to -1.8 kV/-6 µA for thin paper.
FS-1000/1000+
4-11
(5) Fusing The toner on the paper is molten and pressed into the paper as it passes between the heat roller A and the press roller B in the fuser unit.
A
B
Figure 4-1-10 Fusing The heat roller has a halogen lamp inside which continuously turns on and off by the thermistor to maintain the constant temperature onto the heat roller surface. The temperature is approximately 160 °C while the printer is idle; approximately 175 °C (Normal paper) and 185 °C (Thick paper) while printing. The heat roller is resin coated by florin to prevent toner from accumulating on the roller after a long run. Care must be taken while handling the heat roller not to scratch the roller surface as doing so may result in print problems. The heat roller has four claws which are continuously in contact with its surface. These claws prevent the paper on which toner has been fused from being wound around the heat roller causing paper jam. The pressure roller is made of the heat-resistant silicon rubber. This roller is used to strongly press the paper towards the heat roller by means of coil springs. The temperature of the heat roller is constantly monitored by the engine board using the thermistor and triac. Should the temperature of the heat roller exceed the predetermined value, the thermal cutout is activated to effectively disconnect the heater (halogen) lamp from power.
FS-1000/1000+
4-12
Fuser unit mechanism
0 ! @ 1 2
9
8 7 5 4 6
3
1 Heat roller 2 Idle gear Z34 3 Exit gear Z23 4 Idle gear Z18
5 Heat gear Z33 6 Press roller 7 Heater lamp 8 Thermal cutout
9 Separator(s) 0 Thermistor ! Exit pulley(s) @ Lower exit roller
Figure 4-1-11 Fuser unit mechanism
FS-1000/1000+
4-13
(6) Cleaning After the transferring process, the drum needs to be physically cleaned of toner which is residual after the development process. The cleaning blade A is constantly pressed against the drum B and scrapes the residual toner off to the sweep roller C. The waste toner is collected at the output end of the sweep roller C and sent back to the toner container, into the waste toner reservoir D.
E
B A
C D
Figure 4-1-12 Drum cleaning and erasing static charge After the drum B is physically cleaned, it then must be cleaned to the electrically neutral state. This is necessary to erase any residual positive charge, ready to accept the uniform charge for the next print process. The residual charge is canceled by exposing the drum B to the light emitted from the eraser lamp E. This lowers the electrical conductivity of the drum surface making the residual charge on the drum surface escape to the ground.
FS-1000/1000+
4-14
4-2 Paper feeding system
The paper feeding system picks up paper from the cassette, MP tray, or if installed, the paper feeder PF-17, feeds it in the printer, and delivers in the output tray. Paper is fed at the 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 in the paper feeding system and the paths through which the paper travels. The sensors, clutches, etc., are described in the following pages.
( 4 9 & ^ * 3 5
2 1
4 6 %$ # @! 0 87
1 Cassette 2 MP tray 3 Face-down output tray 4 Face-up output tray 5 Process unit 6 Fuser unit 7 Feed roller
8 Feed pulley 9 MP feed roller 0 Lower registration roller ! Upper registration roller @ Transfer roller # Drum $ Heat roller
% Press roller ^ Lower exit roller & Exit pulley * Upper exit roller ( Exit pulley
Figure 4-2-1 Paper feeding path
FS-1000/1000+
4-15
4-2-1 Paper feed control The following diagram shows interconnectivity of the feeding system components including the sensors and rollers. The engine board provides the signals in conjunction with the electrophotography process that is driven by the main board.
Power train
Toner container TK-17
8 Process unit Developing roller 4 6 5 3 2 Registration clutch Paper sensor MP feed clutch Registration sensor MP tray 1 MP paper sensor
Drum Fuser unit
Exit sensor
7
Main motor
Feed clutch Cassette Optional paper feeder PF-17
Cassette Power supply board High voltage board Bias board MOTORN REGDRN EXITN Bias board
Main motor MPFSOLN FEDDRN HANDSN YC07-2
PAPERN
RESIT
YC04-8
YC03-2
YC12-6
YC12-8
Engine board
1 MP feed roller 5 Transfer roller
2 Feed roller 6 Heat roller
3 Lower registration roller 7 Lower exit roller
4 Upper registration roller
8 Upper exit roller
Figure 4-2-2 Paper feed control
FS-1000/1000+
4-16
YC09-2
YC04-1
YC11-6
Paper feeding mechanism
Driving power train A For process unit; drum (From main unit) B For process unit; toner container, developing roller etc. (From main unit) C From process unit; drum (To transfer roller)
) ( * ^ A
B & % $ # @
C
0 ! 1 2 7 8 3
1 Main motor (gear) 2 Registration clutch 3 MP feed clutch 4 Feed clutch 5 MP feed roller 6 Feed roller 7 Registration gear Z13 8 Registration gear Z20 9 Cassette gear 0 Lower registration roller ! Upper registration roller @ Transfer roller # TC gear Z18 $ Press roller % Heat roller
9
4 5 6
^ Heat gear Z33 & Lower exit roller * Exit gear Z23 ( Upper exit roller ) Exit gear Z23 UP
Figure 4-2-3 Paper feeding mechanism
FS-1000/1000+
4-17
4-3 Electrical control system
4-3-1 Electrical parts layout
@ J 4 %$#
7 3 H G I
08
K L5 !M
2 9 ( 6 1 &
6 Main motor 7 Cooling fan 8 Registration clutch 9 Feed clutch 0 MP feed clutch ! MP paper sensor @ Toner sensor # Waste toner sensor $ Eraser lamp % Laser scanner unit ^ Heater lamp & Thermal cutout * Thermistor ( Paper feeder interface connector
^ *
A B C 2 D
E
F
1 Main board (KP-780) 2 Engine board (KP-781) A Go key (switch) B Cancel key (switch) J Interlock switch C Toner indicator (LED) 5 Bias board (KP-783) D Paper empty/ Paper jam K Cassette switch indicator (LED) L Registration sensor E Data indicator (LED) M Paper sensor F On line indicator (LED) Figure 4-3-1 Electrical parts layout
FS-1000/1000+
3 Power supply board G Power switch H Exit sensor I Inlet 4 High voltage board
4-18
4-3-2 Operation of circuit boards (1) Main board
Main board (KP-780)
EBA22 EBA10-1
EBIU Address bus
Compact flash socket
YC05 EBD31-16
YC06
To Laser scanner unit
OUTPE LOBN U01 PowerPC 75 MHz RISC processor (Core ASIC)
CDWAITN, CDET1-2 CDRST EBA22-2 EBCSN0, EBCSN1 EBOEN0, EBWEN0 EBD31-0 Code ROM
Q03 LONR Digital Tr. VDON PDN
YC01 PDN OUTPE PLGCLK, CPRDY, PDN VSREQN, RDYN SCKN, EGSI SBSY, EGSO, SDIR, EGIRN RSTN X'tal X01 18.75 MHz (System) X'tal (Video) CXIN CXOUT VXIN VXOUT
KPDL ROM socket
EBCSN1 EBA20-1 EBCSN0, EBCEN2 EBA21-1 Q01 Digital Tr. OPRSTN U03S U02 Font MASKROM YC02 EBD31-16 EBD31-16
To engine board
Engine I/F
OPRSTN
KUIO-LV
EBD31-16
X02 19.168136 MHz [FS-1000] 23.001765 MHz [FS-1000+] YC03 PNSELIN PNSTROBE, PNAUTOFD, PNINIT PNACK, U06 PBUSY, PPERROR, PSELECT, PNFAULT PDATA Q02 Digital Tr. SELI RSVO
OPRDY, DMAACKN, IORN,IOWN, EBCSN4 OPACKN, OPIRN, DMAREQ EBA15-1
EBD31-0 RASN, CASN, WEN, BA1,BA0, SDCLKE, DQMUU, DQMUM, DQMLM, DQMLL IICSCL IICSDA SDA12-0 SDRAM Address buss U05 U04 DIMM memory Maximum 128 MB 2 MB SDRAM SDD31-0 SDA12-0 SDD31-0 YS02
To PC
Parallel I/F
YC04
PDIRN, 1284HD DTR, RTS, TXD CTS, DSR, RXD RSSEL
SDA12-0 SDCSN0
2 MB SDRAM
Optional serial I/F
SDCSN1-2 SDCLK SDCLK
YC07
Debugger
DBTXD DBRXD, DBCLK U07 3.3 V regulator +5 V +3.3 V U08 3.3 V regulator +5 V KUIO +3.3 V
SDRAM DIMM Slot
SDD31-0
SDRAM Data bus
Figure 4-3-2 Main board circuit block diagram
FS-1000/1000+
4-19
EBIU Data bus
Q04 LDEN Digital Tr.
EBCSN2, EBCSN3, EBOEN1, EBWEN1
YS01
DIMM Slot
APC I/F
(2) Engine board
Engine board (KP-781) Operation keys (switches) and indicators (LEDs) DL01 DL02 DL03 DL04 Main board (KP-780) SW01 SW02 KLED1-4 Optional paper feeder PF-17
KSW1, KSW2
PFMDRN PFSEN, PFPER, PFLK MOTOR MRDYN
RSTIN PLGCLK 24 V DC Reset IC U02 _RESET
U01 CPU
FEDDR
Main motor
EEDIO EESCK
EEPROM U03
Feed clutch
PLGDR PLGRDYN Laser scanner unit Cassette switch Registration sensor Paper sensor SWIN REGN PAPERN FANH FANL THERMA Heater lamp HEAT control circuit EXITN MHVDR, THVDR, RTHDR, HVISEL 24 V DC TONER 5 V DC MPFSOL REGDR
Registration clutch
MP feed clutch
HANDSN
MP paper sensor
Waste toner sensor TNFULL ERASPW ERASER Eraser lamp control circuit Eraser lamp
Toner sensor High voltage output circuit 5 V DC output circuit 24 V DC output circuit Cooling fan Exit sensor Triac Heater lamp Thermistor
Interlock switch
Bias board (KP-783)
High voltage board
Power supply board
Figure 4-3-3 Engine board circuit block diagram
FS-1000/1000+
4-20
Eraser lamp control circuit The CPU turns pin #45 (ERASERN) of U01 to H level, transistors Q12 and Q13 turns on consequently, and the 24 V DC given at pin #1 of YC05 applies to the eraser lamps. The eraser lamps thus illuminate as the current flows through the eraser lamp, the 2nd pin of YC05, resistors R58, R59, and R61, and the ground. Pin #27 (ERRDYN) of the CPU U01 is wired to the crossing of R59 and R61 via R60. The CPU turns pin #45 (ERASERN) to H level and monitors the input level after one second. If the eraser lamp is normal, the current flowing through R60 also flows DZ02, making the voltage at pin #27 to be approximately 2.7 V. On the contrary, if the level at pin #27 (ERRDYN) is less than 1 V for more than 2 seconds, despite the CPU turns pin #45 (ERASERN) to H level and applying the 24 V DC to pin #1 of YC05, the CPU recognizes that the current is not flowing through the eraser lamp. The message "Call service person E5" is then displayed.
Engine board
+24V
Eraser lamp cotrol circuit CPU U01
3 P02/INTP2 45 ERASERN 2 Q12 1 GND R58 R57 1 3 Q13 YC05 1 2 2 C32
Eraser lamp
ERASPW ERASER
R59 P16/ANI6 27 ERRDYN 1 2 GND GND R60 DZ02 R61
R58
Figure 4-3-4 Eraser lamp control circuit
FS-1000/1000+
4-21
Heater lamp control circuit The heater lamp control circuit turns the heater lamp on and off which is located coaxial inside the heat roller, so that the surface of the roller maintains the constant specific, temperature needed to permanently fuse the toner on paper. The heater lamp is directly fed with AC primary power (120 V or 220 - 240 V) which is supplied from the power supply board. The CPU U01 detects variation in voltage resultant of change in temperature, given at pin #33 (THERMA) by the thermistor. This voltage is used to effectively switch the fuser lamp on and off. If pin #1 (HEAT) is H level, transistor array QA01 (pin #5) turns on, the photo coupler on the power supply board turns on, and the triac turns on, consequently the heater lamp is AC powered and lights. The heater lamp continuously turns on and off to maintain the temperature on the heater roller at approximately 170 °C (Normal paper) and 185 °C (Thick paper) for printing and approximately 160 °C at stand by. If the temperature does not decrease more than 1 °C within 20 seconds since the CPU turns pin #1 (HEAT) off to disable the heater lamp, the printer displays "Call service person E4".
Engine board
33 P10/ANI0
THERMA C14 +5V R36 C15 +5V R42 +5V 1 Q08 2 3 QA01 5 3 GND
CPU U01
GND
R38 3.3KF R40 5.1KF C16
2 3
U04 393 1 + R41
Bias board
P50/A8
1 HEAT
GND GND
R45
1 4
Heater lamp control circuit AC
2
Thermal cutout
Power supply board Triac
+24 V
Heater lamp Heat roller Thermistor Photo-coupler
High voltage board
Figure 4-3-5 heater lamp control circuit
FS-1000/1000+
4-22
Besides the thermal cutout device which is connected in series with the heater lamp, the system includes the abnormal temperature detection circuit comprised of comparator U04, R38, R40, etc. Pin #3 of the comparator is continuously given with the voltage by resistors R38 and R40, which simulates the voltage given if an abnormally high temperature develops. Pin #2 receives the voltage the thermistor detects. For instance such as the heater lamp happens not to switch off, the voltage the thermistor gives at pin #2 will become unusually high, and as soon