To zoom in or reduce the size of prints on the Kyocera FS-1018MFP printer, use the DP magnification adjustment:

1. Enter maintenance mode.
2. Enter code "070" using the Original Copy up/down cursor keys.
3. Press the Enter key.
4. Press the system menu/counter key, then press Enter to store the new setting.
5. Place an original on the DP and make a test copy.
6. To increase image size, use the right cursor key (increases magnification).
7. To reduce image size, use the left cursor key (decreases magnification).
8. The setting range is –25 to +25, and each step changes magnification by 0.1%.
9. Press the back key to exit maintenance mode.

This answer is automatically generated

Summary of Contents for Kyocera FS-1018MFP

Page 1 FS-1018MFP KM-1815 SERVICE MANUAL Published in June 2004 842DD112 Revision 2...
Page 2 CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions. CAUTION Double-pole/neutral fusing.
Page 3 Revision history Revision Date Replaced pages Remarks 3 June 2004 Contents, 1-1-2, 1-1-3, 1-3-1, 1-3-15, 1-4-2, 1-6-9, 2-4-1, 2-4-2, 2-4-3 29 June 2004 1-1, 1-2...
Page 4 This page is intentionally left blank.
Page 5 Safety precautions This booklet provides safety warnings and precautions for our service personnel to ensure the safety of their customers, their machines as well as themselves during maintenance activities. Service personnel are advised to read this booklet carefully to familiarize themselves with the warnings and precautions described here before engaging in maintenance activities.
Page 6 Safety warnings and precautions Various symbols are used to protect our service personnel and customers from physical danger and to prevent damage to their property. These symbols are described below: DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect compliance with warning messages using this symbol.
Page 7 1. Installation Precautions WARNING • Do not use a power supply with a voltage other than that specified. Avoid multiple connections to one outlet: they may cause fire or electric shock. When using an extension cable, always check that it is adequate for the rated current..................... •...
Page 8 2. Precautions for Maintenance WARNING • Always remove the power plug from the wall outlet before starting machine disassembly....• Always follow the procedures for maintenance described in the service manual and other related brochures............................• Under no circumstances attempt to bypass or disable safety features including safety mechanisms and protective circuits.
Page 9 • Do not pull on the AC power cord or connector wires on high-voltage components when removing them; always hold the plug itself....................... • Do not route the power cable where it may be stood on or trapped. If necessary, protect it with a cable cover or other appropriate item.
Page 10 CONTENTS 1-1 Specifications 1-1-1 Specifications ............................1-1-1 1-1-2 Name of parts ............................1-1-3 (1) Main body ............................1-1-3 (2) Operation panel ..........................1-1-4 1-2 Handling Precautions 1-2-1 Drum ..............................1-2-1 1-2-2 Installation environment ........................1-2-1 1-3 Installation 1-3-1 Unpacking and installation ........................1-3-1 (1) Installation procedure ........................
Page 11 (5) The feed clutch does not operate....................1-5-20 (6) The MP feed clutch does not operate................... 1-5-21 (7) The registration clutch does not operate..................1-5-21 (8) The eraser lamp does not turn on....................1-5-21 (9) The exposure lamp does not turn on.................... 1-5-21 (10) The exposure lamp does not turn off.
Page 12 (4) Adjusting magnification of the scanner in the main scanning direction ........1-6-44 (5) Adjusting magnification of the scanner in the auxiliary scanning direction ........1-6-45 (6) Adjusting the scanner leading edge registration ................1-6-46 (7) Adjusting the scanner center line ....................1-6-47 (8) Adjusting the margins for scanning an original on the contact glass ..........
Page 13 CONTENTS 1-1 Specifications 1-1-1 Specifications ............................1-1-1 1-1-2 Name of parts ............................1-1-3 (1) Main body ............................1-1-3 (2) Operation panel ..........................1-1-4 1-2 Handling Precautions 1-2-1 Drum ..............................1-2-1 1-2-2 Installation environment ........................1-2-1 1-3 Installation 1-3-1 Unpacking and installation ........................1-3-1 (1) Installation procedure ........................
Page 14 (5) The feed clutch does not operate....................1-5-20 (6) The MP feed clutch does not operate................... 1-5-21 (7) The registration clutch does not operate..................1-5-21 (8) The eraser lamp does not turn on....................1-5-21 (9) The exposure lamp does not turn on.................... 1-5-21 (10) The exposure lamp does not turn off.
Page 15 (4) Adjusting magnification of the scanner in the main scanning direction ........1-6-44 (5) Adjusting magnification of the scanner in the auxiliary scanning direction ........1-6-45 (6) Adjusting the scanner leading edge registration ................1-6-46 (7) Adjusting the scanner center line ....................1-6-47 (8) Adjusting the margins for scanning an original on the contact glass ..........
Page 16 2DD-2 1-1-1 Specifications Type ..........Desktop Copying system ......Indirect electrostatic system Originals ......... Sheets of paper (Maximum original size: folio/8 " × 14" [legal]) Platen: Sheets of paper, books, 3-dimensional objects (Maximum original size: folio/ " × 14" [legal]) Original feed system ......
Page 17 2DD-2 • Printing functions Printing speed ........ A4/8 " × 11": 18 prints/min. A5: 18 prints/min. " × 14": 15 prints/min. First print speed ......Apporox. 8 s (A4/8 " × 11") Resolution ........300, 600 dpi and Fast 1200 Compatible operation system ..
Page 18 2DD-1 1-1-2 Names of parts (1) Main body ‹ ﬁ ﬂ ⁄ › ‡ ¤ & Figure 1-1-1 Names of parts 1 Original cover % Stopper extension lock 2 Contact glass ^ Face-down output tray 3 Original size indicator & MP tray 4 Operation panel * Extension tray 5 Front top cover...
Page 19 (2) Operation panel & ⁄ ‹ › ‡ ﬂ — · ¤ ﬁ Figure 1-1-2 1 Status key and indicator % Original quality key and indicator 2 Copy key and indicator ^ Original size key and indicator 3 E-mail (Scan) key and indicator &...
Page 20 1-2-1 Drum Note the following when handling or storing the drum. • When removing the process unit, never expose the drum surface to strong direct light. • Keep the drum at an ambient temperature between 10°C/50°F and 32.5°C/90.5°F and at a relative humidity not higher than 80% RH.
Page 21 2DD-1 1-3-1 Unpacking and installation (1) Installation procedure Start Unpack. Remove the tapes, pads and sheets. Remove the pin holding scanner unit. Install a toner container. Connect the power cord. Inisializing the machine. Load paper. Using the one-touch key sheet. Make test copies.
Page 22 Unpack — ‡ · ¤ ⁄ & ﬁ ‹ ﬂ › ﬁ ﬂ Figure 1-3-1 Unpacking 1 Main body ! Front spacer ⁄ Pocket spacer 2 Toner container @ Front pad ¤ Paper tag 3 Power cord # Bottom spacer ‹...
Page 23 CAUTIONS • Be sure to hold both the front and rear sides of the machine when carrying it, as shown in the illustration. • Be sure not to pull the cassette out when holding the front of the machine. • Be sure that the original cover is closed whenever transporting the machine. •...
Page 24 Remove the tapes, pads and sheets. 1. Remove the sheet and the two tapes. Tapes Sheet Figure 1-3-3 2. Open the original cover. Original cover Figure 1-3-4 1-3-4...
Page 25 3. Remove the eight tapes, the two pads and the sheet. Tapes Sheet Tape Tapes Tape Figure 1-3-5 4. Pull the cassette out of the machine. Cassette Figure 1-3-6 5. Remove the pad from inside the cassette. Figure 1-3-7 1-3-5...
Page 26 Remove the pin holding scanner unit. 1. Remove the yellow pin for scanner unit and the paper tag from the left side of the machine. Paper tag Figure 1-3-8 Install a toner container. 1. Open the front top cover and front cover. Front top cover Front cover Figure 1-3-9...
Page 27 3. Remove the process unit from the machine. CAUTIONS • Place the process unit on a clean, level surface. • Never expose the process unit to any sort of impact or shock. • 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.
Page 28 6. Shake the toner container horizontally back and forth five or six times so that the toner inside of it becomes evenly distributed. Toner container Figure 1-3-14 7. Remove the orange protective seal. Seal Figure 1-3-15 8. Align the knob on the left side of the container with the groove in the process unit and set the toner container into the process unit.
Page 29 9. Hold the process unit stable and push on the areas marked “PUSH HERE” on the toner Toner container container until the container clicks into place. Figure 1-3-17 10. Push the lock lever back into its locked position. Lock lever Figure 1-3-18 11.
Page 30 12. Close the front cover. Front cover Figure 1-3-20 13. Close the front top cover. Front top cover Figure 1-3-21 1-3-10...
Page 31 Connect the power cord. 1. Connect the power cord. Power cord Figure 1-3-22 Initializing the machine. 1. Turn the power switch to the machine ON ( | ). Power switch Figure 1-3-23 The machine will begin replenishing the toner. Wait until it has completed that operation. (15 minutes) Once the toner has been replenished and the machine is once again in a ready-to-use state,...
Page 32 Load paper. 1. Pull the cassette out of the machine. Cassette Figure 1-3-25 2. Adjust the paper stopper in the rear portion of the Paper stopper cassette to fit the size of the paper being loaded there by pressing in on the release buttons and sliding the paper stopper to the corresponding paper size.
Page 33 4) Press down on the stopper extension lock and slide the paper stopper towards the rear of the cassette to set the lock into place. Paper stopper The paper stopper is in position for Folio and Oficio II size paper. Stopper extension lock Figure 1-3-28...
Page 34 NOTES • Always adjust the paper stopper and paper width guides before loading paper into the cassette. Paper width guide Failure to do so may result in skewed paper feed and/or a paper jam. • Make sure that the paper is set securely against the paper stopper and the paper width guides.
Page 35 2DD-1 Using the one-touch key sheet. 1. Remove the one-touch key sheet from bottom side of the operation panel. One-touch key sheet Figure 1-3-33 2. Enter the information for the registered destinations onto the one-touch key sheet. (There are 4 spare one-touch key sheets included with this machine.) 3.
Page 36 1-3-2 Connecting the cables (1) Connecting the network cable To connect the machine to a network, use an network cable (10Base-T or 100Base-TX). Procedure 1. Turn the power switch located on the rear side of the machine off (O), and remove the power cord from the outlet.
Page 37 (2) Connecting the printer cable To connect the machine directly to your computer, use either a parallel cable or USB cable. Procedure 1. Turn the power switch located on the rear side of the machine off (O), remove the power cord from the outlet and turn the power off to computer.
Page 38 1-3-3 Installing the document processor (option) Procedure 1. Remove all of the components to the document processor from the box. CAUTION Be sure to hold both sides of the document processor when carrying it, as shown in the illustration. Be particularly careful NOT to touch the guide film or the thin white surface indicated by the A in the illustration.
Page 39 4. Attach the document processor to the copier. CAUTION Be sure that the connection cable does not get caught between the document processor and the copier when attaching the document processor to the copier. Connection cable Figure 1-3-42 5. Gently close the document processor. Document processor Figure 1-3-43...
Page 40 CAUTION Be sure to tighten the pins securely when connecting the cable. Pins Figure 1-3-45 7. Turn the power switch to the copier back ON ( | ). Warm up will begin. “1” will appear on the operation panel and the Start indicator will light when the copier is in a copy-ready state.
Page 41 1-3-4 Installing the expanding memory (option) The main board of the machine 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 machine during the installation process.
Page 42 1-4-1 Maintenance mode The machine is equipped with a maintenance function which can be used to maintain and service the machine. (1) Executing a maintenance item Start Press the system menu/counter key. Select “Service setting” using the up/down cursor keys. While pressing the start key and the # key, Maintenance mode is entered.
Page 43 2DD-1 (2) Maintenance modes Item Initial Category Maintenance setting* General U000 Outputting an own-status report — Initialization U020 Initializing all data — Drive, paper U034 Setting paper timing feed and paper • Adjusting the leading edge registration — conveying • Adjusting the center line —...
Page 44 (3) Contents of maintenance mode items Maintenance Description item No. U000 Outputting an own-status report Description Outputs lists of the current settings of the maintenance items, and paper jam and service call occurrences and event log report. Purpose To check the current setting of the maintenance items, or paper jam or service call occurrences. Before initializing the backup RAM, output a list of the current settings of the maintenance items to reenter the settings after initialization or replacement.
Page 45 Maintenance Description item No. Item Description 1 Paper Jam Log #: Log number 1 to 16 jams are recorded. (If the number of jams exceeds 16, the oldest log is deleted.) Count.: Number of pages Total page counter at the time of jam Event: Log code Six types of two-digit hexadecimal numbers are displayed.
Page 46 Maintenance Description item No. Item Description (c) Paper size 01: Envelope Monarch 09: B5 1F: Postcard 02: Envelope #10 0D: A5 20: Reply-paid postcard 03: Envelope DL 0E: A6 21: Officio II 04: Envelope C5 0F: B6 28: 16K 05: Executive 10: Envelope #9 32: Statement 06: Letter...
Page 47 Maintenance Description item No. U020 Initializing all data Description Initializes all the backup RAM on the engine board to return to the original settings. Purpose Used when replacing backup RAM on the engine board. After initialization, run U157 “Changing the developing drive time”...
Page 48 Maintenance Description item No. U063 Adjusting the shading position Description Changes the shading position. Purpose Used when white lines continue to appear longitudinally on the image after the shading plate is cleaned. This is due to flaws or stains inside the shading plate. To prevent this problem, the shading position should be changed so that shading is possible without being affected by the flaws or stains.
Page 49 Maintenance Description item No. U074 Adjusting the DP input light luminosity Description Adjusts the luminosity of the exposure lamp for scanning originals from the DP. Purpose Used if the exposure amount differs significantly between when scanning an original on the contact glass and when scanning an original from the DP.
Page 50 Maintenance Description item No. U089 Outputting a MIP-PG pattern Description Selects and outputs a MIP-PG pattern created in the machine. Purpose When performing respective image printing adjustments, used to check the machine status apart from that of the scanner with a non-scanned output MIP-PG pattern. Method 1.
Page 51 Maintenance Description item No. U089 Method: 1dot PG output 1. Change the setting using the left/right cursor keys. Description Setting range Initial setting Number of 1dot pattern 1 to 16 2. Press the enter key. The value is set. 3. Press the system menu/counter key. The machine enters the PG pattern output mode. 4.
Page 52 Maintenance Description item No. U144 Setting toner loading operation Description Sets toner loading operation. Purpose To run when drum filming (background blur in paper edge section) occurs. Method Press the enter key. Setting 1. Change the setting using the left/right cursor keys. Setting value Description Toner not loaded...
Page 53 Maintenance Description item No. U161 Setting the fixing control temperature Description Changes the fixing control temperature. Purpose Normally no change is necessary. However, can be used to prevent curling or creasing of paper, or solve a fixing problem on thick paper. Method Press the enter key.
Page 54 Maintenance Description item No. U203 Operating DP separately Description Simulates the original conveying operation separately in the DP. Purpose To check the DP. Method 1. Press the enter key. A selection item appears. 2. Select the item to using the up/down cursor keys. Display Operation With paper...
Page 55 Maintenance Description item No. U403 Adjusting margins for scanning an original on the contact glass Adjustment See page 1-6-48. U404 Adjusting margins for scanning an original from the DP Adjustment See page 1-6-53. U411 Adjusting the scanner automatically Description Uses the original for adjustment (P/N: 2A668011) to carry out the automatic adjustment of scanner (scanner center line adjustment, scanner leading edge registration adjustment, magnification of the scanner in the auxiliary scanning direction adjustment, monochrome/color input γ...
Page 56 Maintenance Description item No. U425 Setting the target Description When running U411 “Adjusting the scanner automatically,” input the color data value of the specified patch written in the LAB value table on the back side of the original for adjustment (P/N: 2A668011). Note that incorrect value input results in improper automatic adjustment.
Page 57 Maintenance Description item No. U901 Checking/clearing print counts by paper feed locations Description Displays or clears print counts by paper feed locations. Purpose To check the time to replace consumable parts. Also to clear the counts after replacing the consumable parts. Method 1.
Page 58 Maintenance Description item No. U927 Clearing accounting counter Description Clears the total count, scanner count and machine life count. The counts, however, can be cleared only one time. If either of the total count, canner count or machine life count exceeds 1,000, this mode cannot be run. Purpose To start the counters with value 0 when installing the machine.
Page 59 1-4-2 System settings In addition to a maintenance function for service, the machine is equipped with a system settings which can be operated by users (mainly by the machine administrator). In this machine system settings, default settings can be changed. (1) Executing a system setting item •...
Page 60 (2) System settings Adjusting the contrast of the message display Changing the function defaults 1. Select “Adjust” and press the Enter key. 1. Select “Function Default” and press the Enter key. 2. Select “LCD Contrast” and press the Enter key. 2.
Page 61 Setting of the panel reset time Settings for the cassettes and MP tray 1. Select “Date/Timer Set.” and press the Enter key. 1. Select “Common Setting” and press the Enter key. 2. Select “Auto Panel Reset” and press the Enter 2.
Page 62 1-5-1 Paper misfeed detection (1) Paper misfeed indication When a paper misfeed occurs, the machine immediately stops copying or printing and displays the jam location on the operation panel. To remove paper jammed in the machine, open the face-up output tray, front top cover, front cover or pull the drawer out. To remove original jammed in the DP, open the DP original cover.
Page 63 (2) Paper misfeed detection conditions Registration Exit sensor sensor Figure 1-5-2 1-5-2...
Page 64 Section Jam code Description Conditions System No paper feed When the power switch is turned on or front top cover is closed, the machine detects activation of the registration sensor or the exit sensor. Cover open JAM A cover open state is detected during copying or printing. Secondary paper feed When the machine waits for secondary paper feed, 15 s or timeout...
Page 65 (3) Paper misfeeds • Main body Problem Causes/check procedures Corrective measures A piece of paper torn from Check visually and remove it, if any. A paper jam in the paper is caught around conveying, fixing or registration sensor or exit exit section is indi- sensor.
Page 66 Problem Causes/check procedures Corrective measures Check if the MP feed roller Check visually and replace any deformed roller. A paper jam in the is deformed. paper feed section Defective registration sen- Check if YC8-7 on the engine board remains low when the regis- is indicated during sor.
Page 67 Problem Causes/check procedures Corrective measures Defective registration sen- Check if YC8-7 on the engine board remains low when the regis- A paper jam in the sor. tration sensor is turned on and off. If it does, replace the regis- exit section is indi- tration sensor.
Page 68 • DP Problem Causes/check procedures Corrective measures A piece of paper torn from Remove any found. An original jams an original is caught when the power around the DP timing switch is turned on. switch. Defective DP timing Check if YC10-6 on the engine board remains low when the DP switch.
Page 69 1-5-2 Self-diagnosis (1) Self-diagnostic function This unit is equipped with a self-diagnostic function. When a problem is detected, copying is disabled. "C" and a number between 0150 and 7990 altenates, indicating the nature of the problem. After removing the problem, the self-diagnostic function can be reset by turning interlock switch off and back on. (2) Self diagnostic codes Remarks Code...
Page 70 Remarks Code Contents Causes Check procedures/corrective measures C0800 Image processing problem Defective engine Replace the engine board (KP-5238) and • JAM05 is detected twice. board (KP-5238). check for correct operation. C2000 Main motor problem Poor contact in Reinsert the connector. Also check for con- •...
Page 71 Remarks Code Contents Causes Check procedures/corrective measures C4000 Polygon motor synchronization Poor contact in Reinsert the connector. Also check for con- problem the polygon motor tinuity within the connector cable. If none, • The polygon motor does not reach connector termi- remedy or replace the cable.
Page 72 Remarks Code Contents Causes Check procedures/corrective measures C6050 Abnormally low fixing unit ther- Poor contact in Check the connection of connector YC4 on mistor temperature the thermistor the power supply board and the continuity • The fixing temperature remains below connector termi- across the connector terminals.
Page 73 Remarks Code Contents Causes Check procedures/corrective measures C7980 Waste toner reservoir overflow Defective waste Shake the process unit from side to side problem (when the total number of toner sensor or and turn the power switch off and then on. copies is less than 100 thousand engine board (KP- If the problem cannot be solved, replace...
Page 74 1-5-3 Image formation problems (1) No image appears (2) No image appears (3) Image is too light. (4) Background is visible. (entirely white). (entirely black). See page 1-5-14 See page 1-5-14 See page 1-5-15 See page 1-5-15 (8) One side of the print (5) A white line appears (7) A black line appears (6) A black line appears...
Page 75 (1) No image appears Causes (entirely white). 1. No transfer charging. Causes Check procedures/corrective measures 1. No transfer charging. A. The connector terminals of the high voltage Reinsert the connector. Also check for continuity within the board make poor contact. connector cable.
Page 76 (3) Image is too Causes light. 1. Insufficient toner. 2. Deteriorated developer. 3. Dirty or deteriorated drum. Causes Check procedures/corrective measures 1. Insufficient toner. If the add toner indicator lights, replace the toner container. 2. Deteriorated developer. Replace the process unit. 3.
Page 77 (6) A black line appears Causes longitudinally. 1. Dirty contact glass. 2. Dirty or flawed drum. 3. Deformed or worn cleaning blade. 4. Dirty scanner mirror. Causes Check procedures/corrective measures 1. Dirty contact glass. Clean the contact glass. 2. Dirty or flawed drum. Replace the process unit.
Page 78 (9) Black dots appear Causes on the image. 1. Dirty or flawed drum. 2. Dirty contact glass. 3. Deformed or worn cleaning blade. Causes Check procedures/corrective measures 1. Dirty or flawed drum. Replace the process unit. 2. Dirty contact glass. Clean the contact glass.
Page 79 (12) Paper creases. Causes 1. Paper curled. 2. Paper damp. Causes Check procedures/corrective measures 1. Paper curled. Check the paper storage conditions. 2. Paper damp. Check the paper storage conditions. (13) Offset occurs. Causes 1. Defective cleaning blade. Causes Check procedures/corrective measures 1.
Page 80 (15) Fixing is poor. Causes 1. Wrong paper. 2. Flawed press roller. Causes Check procedures/corrective measures 1. Wrong paper. Check if the paper meets specifications. 2. Flawed press roller. Replace the press roller (see page 1-6-26). (16) Image center does not Causes align with the original 1.
Page 81 1-5-4 Electrical problems Problem Causes Check procedures/corrective measures No electricity at the power Measure the input voltage. The machine does outlet. not operate when The power cord is not Check the contact between the power plug and the outlet. the power switch is plugged in properly.
Page 82 Problem Causes Check procedures/corrective measures Broken MP feed clutch Check for continuity across the coil. If none, replace the MP feed The MP feed clutch coil. clutch. does not operate. Poor contact in the MP Reinsert the connector. Also check for continuity within the con- feed clutch connector ter- nector cable.
Page 83 Problem Causes Check procedures/corrective measures (13) Broken main charger wire. See page 1-5-14. Main charging is not Leaking main charger performed. housing. Poor contact in the high voltage board connector terminals. Defective engine board (KP-5238). Defective high voltage board. (14) Poor contact in the high See page 1-5-14.
Page 84 1-5-5 Mechanical problems Problem Causes/check procedures Corrective measures Check if the surfaces of the feed roller and Clean with isopropyl alcohol. No primary paper feed. MP feed roller are dirty with paper powder. Check if the feed roller and MP feed roller Check visually and replace any deformed are deformed.
Page 85 1-6-1 Precautions for assembly and disassembly (1) Precautions • Be sure to turn the power switch off and disconnect the power plug before starting disassembly. • When handling PCBs, do not touch connectors with bare hands or damage the board. •...
Page 86 1-6-2 Removing the process unit 1. Open the front top cover. 2. Open the front cover. 3. Lift the process unit together with the toner container out of the machine. Front top cover Front cover Process unit Figure 1-6-1 Removing the process unit CAUTIONS •...
Page 87 1-6-3 Removing the principal outer covers (1) Removing the front top cover/face-down output tray 1. Remove the one screw and then remove the memory cover. 2. Remove the one screw and then remove the rear cover. Screw Rear cover Memory cover Screw Figure 1-6-2 Removing the memory cover and rear cover 3.
Page 88 (2) Removing the right cover 1. Remove the front top cover/face-down output tray (See page1-6-3). 2. Remove the memory cover (See page 1-6-3). 3. Unlatch the snaps and hook, remove the right cover. Right cover :Snap/Hook (inside cover) Right cover Figure 1-6-4 Removing the right cover (3) Removing the left cover 1.
Page 89 1-6-4 Removing the feed roller CAUTION When refit the feed roller, fit the D-cut shaft into the D-shape hole of the feed roller. 1. Remove the paper cassette and the process unit (See page 1-6-2). 2. Stand the machine the front side up. 3.
Page 90 1-6-5 Removing the MP feed roller 1. Remove the engine board (See page 1-6-9). 2. Remove one screw. 3. Remove the grounding plate. 4. Remove one stop ring . 5. Remove the MP feed clutch. MP feed clutch Stop ring Grounding plate Screw...
Page 91 6. Remove one screw. 7. Remove the toner sensor and spring. 8. Remove two screws. 9. While pressing the latch by using the driver and then remove the MP feed unit. Toner sensor Screw Screw Spring Screw Latch MP feed unit Figure 1-6-8 Removing the MP feed unit 10.
Page 92 1-6-6 Removing the transfer roller CAUTION Do not touch the transfer roller (sponge) surface. Oil and dust (particles of paper, etc.) on the transfer roller can significantly deteriorate the print quality (white spots, etc.). When refitting the bushes and springs, make sure to refit the black colored bush and spring on the left side. Also, observe the correct direction to which the bush is fit in reference to the paper passing direction.
Page 93 2DD-1 1-6-7 Removing the primary circuit boards (1) Removing the engine board 1. Remove the right cover (See page 1-6-4). 2. Remove all (twelve) connectors from the engine board. 3. Remove three screws. 4. Remove the engine board. * When replacing the board with a new board, remove the EEPROM from the old board and mount it to the new board.
Page 94 (2) Removing the main board 1. Remove the right cover (See page 1-6-4). 2. Remove the one connector. 3. Remove the one screw and then remove the speaker. Connector Speaker Screw Figure 1-6-12a Removing the speaker 4. Remove the three connectors. 5.
Page 95 7. Remove two screws at the back of the main board. * When replacing the board with a new board, remove the EEPROM from the old board and mount it to the new board. Main board Screws EEPROM Figure 1-6-13 Removing the main board 1-6-11...
Page 96 (3) Removing the power supply board and high voltage board 1. Remove the process unit (See page 1-6-2). 2. Remove the left cover (See page 1-6-4). 3. Remove three connectors from the power supply board. 4. Remove eight screws. 5. Remove the power supply board and high voltage board. (Note: The high voltage board is directly connected to the bias board.) 6.
Page 97 (4) Removing the bias board 1. Remove the cassette and process unit (See page 1-6-2). 2. Remove the left cover (See page 1-6-4). 3. Remove the power supply board and high voltage board (See the previous page). 4. Stand the machine with the front side up. 5.
Page 98 1-6-8 Removing the main motor and drive unit 1. Remove the cassette and process unit (See page 1-6-2). 2. Remove the right cover (See page 1-6-4). 3. Remove three connectors from the main motor. 4. Remove four screws. 5. Remove main motor. Connectors Main motor Screws...
Page 99 6. Remove the engine board (See page 1-6-9). 7. Remove wires from wire saddles on the cord cover. 8. Remove one screw. 9. Remove the cord cover. Wire saddle Screw Wire saddles Cord cover Figure 1-6-17 Removing the cord cover 1-6-15...
Page 100 10. Remove the main board (See page 1-6-10). 11. Remove one screw and then remove the grounding plate. 12. Remove one screw and then remove the feed clutch. 13. Remove three stop rings. 14. Remove MP feed clutch (gear), feed clutch (gear), and registration clutch (gear). MP feed clutch (gear) Grounding Stop ring...
Page 101 15. Remove the four screws. 16. Remove the drive unit. Drive unit Screws Figure 1-6-19 Removing the drive unit 1-6-17...
Page 102 1-6-9 Removing and splitting the fuser unit WARNING • The fuser unit is hot after the machine was running. Wait until it cools down. CAUTION • When refitting the fuser unit, make sure the fuser unit gear and the machine’s drive gear are properly meshed with each other.
Page 103 6. Remove two screws. 7. Open and split the fuser unit. Screw Fuser unit Screw Figure 1-6-21 Splitting the fuser unit 1-6-19...
Page 104 (1) Removing the separation claws WARNING The separation claws are extremely hot immediately after the copier was running. Allow substantial period of time until it cools down. 1. Remove and split the fuser unit (See page 1-6-18). 2. Loosen the stopper screws. 3.
Page 105 (2) Removing the heater lamp WARNING • The heater lamp is extremely hot immediately after the machine was running. • Allow substantial period of time until it cools down. Also, the heater lamp is fragile: Handle it with great care. CAUTION •...
Page 106 (3) Removing the heat roller WARNING • The heat roller is extremely hot immediately after the machine was running. Allow substantial period of time until it cools down. 1. Remove and split the fuser unit (See page 1-6-18). 2. Remove the heater lamp (See previous page). 3.
Page 107 4. Remove the heat gear Z33, heat R bush, and heat L bush from the heat roller. Heat gear Z33 Heat R bush Heat L bush Heat roller Figure 1-6-25 Removing the heat roller 1-6-23...
Page 108 (4) Removing the thermistor 1. Remove and split the fuser unit (See page 1-6-18). 2. Remove the heater lamp (See page 1-6-21). 3. Remove the heat roller (See page 1-6-22). 4. Remove one screw. 5. Remove the thermistor. Screw Thermistor Figure 1-6-26 Removing the thermistor 1-6-24...
Page 109 (5) Removing the thermal cutout CAUTION • Do not bend the terminals of the thermal cutout. 1. Remove and split the fuser unit (See page 1-6-18). 2. Remove the heater lamp (See page 1-6-21). 3. Remove the heat roller (See page 1-6-22). 4.
Page 110 (6) Removing the press roller WARNING • The press roller is extremely hot immediately after the machine was running. Allow substantial period of time until it cools down. 1. Remove and split the fuser unit (See page 1-6-18). 2. Remove the press roller from the fuser unit. Press roller Fuser unit Figure 1-6-28 Removing the press roller...
Page 111 1-6-10 Removing the scanner unit 1. Remove the right and left cover (See page 1- 6-4). 2. Remove the speaker (See page 1-6-10). 3. Remove the five connectors and two flexible flat cables from the scanner board. 4. Remove the five screws and then remove the Screw scanner board.
Page 112 4. Remove the two screws. 5. Slide the scanner unit and then remove the scanner unit. Scanner unit Screws Figure 1-6-30 Removing the scanner unit 1-6-28...
Page 113 1-6-11 Removing the laser scanner unit and the eraser lamp 1. Remove the scanner unit (See page 1-6-27). 2. Remove two screws and then remove grounding plate. 3. Remove each two screws and then remove the right and left scanner stays. Screws Screws Left scanner stay...
Page 114 6. Remove three screws. 7. Remove two connectors from the laser scanner unit. 8. Remove the laser scanner unit. * When refitting the laser scanner unit, tighten a screw in order of 3 from 1. Screws Laser scanner unit Conncetor Conncetor Figure 1-6-33 Removing the laser scanner unit 1-6-30...
Page 115 9. Remove the eraser lamp. Eraser lamp 5-2-34 Removing the eraser lamp 1-6-31...
Page 116 1-6-12 Removing the ISU unit 1. Unhook the two hooks by using screw driver through the holes and then remove the operation unit. Hole Operation unit Hook Hook Hole Figure 1-6-35 Removing the operation unit 2. Remove two screws and then remove the original holder cover.
Page 117 3. Remove two screws and then remove two grounding plates. 4. Remove the one stopper ring and then detach the scanner shaft. * Detach the shaft taking care to tilt it as little as possible. Stopper ring Screw Grounding plates Scanner shaft Screw Figure 1-6-37 Detaching the scanner shaft...
Page 118 1-6-13 Removing the exposure lamp 1. Remove the ISU unit (See page 1-6-32). 2. Remove the two connectors from the inverter board. 3. Remove the one screw and then remove the inverter board. ISU unit Inverter board Screw Connectors Figure 1-6-39 Removing the inverter board 4.
Page 119 5. Remove the exposure lamp and cables from the exposure lamp mount. • Do not touch the glass surfaces of the exposure lamp with bare hands. Exposure lamp Exposure lamp mount Cables Figure 1-6-41 Removing the exposure lamp 1-6-35...
Page 120 1-6-14 Removing the scanner mirror A 1. Remove the ISU unit (See page 1-6-32). 2. Remove the exposure lamp (See page 1-6- 34). 3. Unhook the two mirror A holders and then Mirror A holder remove the scanner mirror A. Scanner mirror A Hook Mirror A holder...
Page 121 1-6-15 Removing the scanner motor 1. Remove the original holder cover (See page 1-6-32). 2. Remove the right cover (See page 1-6-4). 3. Remove the speaker (See page 1-6-10). 4. Remove the one connector from the scanner board. Scanner board Connector Figure 1-6-43 Removing the scanner motor (1) Screw...
Page 122 8. Remove three screws and then remove the grounding plate. Screws Grounding plate Screw Figure 1-6-46 Removing the scanner motor (4) 9. Remove the one stopper ring and then detach the scanner shaft. Stopper ring * Detach the shaft taking care to tilt it as little as possible.
Page 123 10.Remove the cable from the cable clamps. 11. Remove the four screws and then remove the scanner motor mount with scanner motor. Screws Screw Scanner motor mount Cable Cable clamps Figure 1-6-48 Removing the scanner motor (6) 12. Remove the one screw and then remove the scanner motor.
Page 124 1-6-16 Removing the main charger unit 1. Remove the process unit from the machine (See page 1-6-2). 2. Unlatch the three snaps, and remove the main charger cap. 3. Draw the main charger unit in the direction of arrow A, then pull it out in the direction of arrow B. Main charger unit Snap...
Page 125 1-6-17 Adjustment the maintenance mode (1) Adjusting the leading edge registration of image printing Make the following adjustment if there is a regular error between the leading edges of the copy image and original. U066 U071 U034 (P. 1-6-46) (P. 1-6-50) Caution: Check the copy image after the adjustment.
Page 126 (2) Adjusting the center line of image printing Make the following adjustment if there is a regular error between the center lines of the copy image and original when paper is fed from the drawer. U067 U072 U034 (P. 1-6-47) (P.
Page 127 (3) Adjusting the amount of slack in the paper Make the following adjustment if the leading edge of the copy image is missing or varies randomly, or if the copy paper is Z-folded. Procedure Start Enter maintenance mode. Enter “051” using Correct image Copy Copy...
Page 128 (4) Adjusting magnification of the scanner in the main scanning direction Perform the following adjustment if the magnification in the main scanning direction is not correct. U065 U065 U067 (auxiliary scanning (main scanning (P. 1-6-47) direction) (P. 1-6-45) direction) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode.
Page 129 (5) Adjusting magnification of the scanner in the auxiliary scanning direction Perform the following adjustment if the magnification in the auxiliary scanning direction is not correct. U065 U065 U070 (main scanning (auxiliary scanning (P. 1-6-49) direction) (P. 1-6-44) direction) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode.
Page 130 (6) Adjusting the scanner leading edge registration Perform the following adjustment if there is regular error between the leading edges of the copy image and original. U034 U071 U066 (P. 1-6-41) (P. 1-6-50) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode. Procedure Leading edge registration Start...
Page 131 (7) Adjusting the scanner center line Perform the following adjustment if there is a regular error between the center lines of the copy image and original. U034 U072 U067 (P. 1-6-42) (P. 1-6-52) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode. Procedure Scanner center line Start...
Page 132 (8) Adjusting the margins for scanning an original on the contact glass Perform the following adjustment if the margins are not correct. U404 U403 (P. 1-6-53) Caution: Check the copy image after the adjustment. If the image is still incorrect, perform the above adjustments in maintenance mode.
Page 133 (9) Adjusting the DP magnification Adjust magnification in the auxiliary scanning direction if magnification is incorrect when the DP is used. U065 U070 (P. 1-6-44) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode. Procedure Start Enter maintenance mode.
Page 134 (10) Adjusting the DP leading edge registration Perform the following adjustment if there is a regular error between the leading edge of the original and the copy image. U034 U066 U071 (P. 1-6-41) (P. 1-6-46) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode. Procedure Leading edge registration Start...
Page 135 (11) Adjusting the DP trailing edge registration Perform the following adjustment if the original scanning end position is not correct when the DP is used. Caution: If the copy image looks like copy example 2, clean the DP original scanning section. Procedure Start Enter maintenance mode.
Page 136 (12) Adjusting the DP center line Perform the following adjustment if there is a regular error between the centers of the original and the copy image. U034 U067 U072 (P. 1-6-42) (P. 1-6-47) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode. Procedure Reference Start...
Page 137 (13) Adjusting the margins for scanning the original from the DP Perform the following adjustment if margins are not correct. U403 U404 (P. 1-6-48) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode. Procedure (3 ±...
Page 138 1-7-1 Upgrading the firmware on the main board • When using Compact Flash Firmware upgrading requires the following tools: Compact Flash (Products manufactured by SANDISK are recommended.) NOTE • When writing data from a computer to a new Compact Flash, be sure to format it from the computer in advance. •...
Page 139 • When replacing DIMM Firmware upgrading requires the following tools: DIMM (P/N 2DD01080) Procedure DIMM slot 1. Turn the power switch off and disconnect the power plug. 2. Remove the one pin and then remove the memory cover. 3. Remove the DIMM from the DIMM slot on the main board.
Page 140 2-1-1 Paper feeding system The paper feeding system picks up paper from the cassette, MP tray, or if installed, the paper feeder, feeds it in the machine, 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.
Page 141 (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 Process unit Registration...
Page 142 (2) 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) & ﬂ 1 Main motor (gear) ﬁ...
Page 143 2-1-2 Original scanning system The scanner unit consists of the image scanning unit (ISU) for main-direction scanning, and drive part for traveling the ISU unit to sub-direction. ^ & ⁄ ¤ › ) ‹ Figure 2-1-4 Scanner unit 1 Original holder # Scanner gear 39/22 2 Scanner upper frame $ Scanner shaft...
Page 144 Original Scanner unit ISU unit Scanner board Exposure Main board lamp image YC6-2 YC1-4 sensor YC6-3 YC1-5 CCDCLKN YC6-4 YC1-14 Inverter CCDCLK YC6-6 YC1-12 CCD board board YC6-8 YC1-10 YC6-10 YC1-8 LAMP YC2-2 YC6-12 YC1-6 CCDG(O) YC6-16 YC1-18 CCDB(E) YC6-18 YC1-20 CCDR YC6-20...
Page 145 (1) ISU unit The ISU unit consists of an exposure lamp, three mirrors, an ISU lens, a CCD board, and so on. Also an inverter board for driving the exposure lamp and a scanner home position sensor for detecting the home position of the ISU unit are incorporated.
Page 146 2-1-3 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 machine’s electrophotography system.
Page 147 (1-1) Process unit mechanism 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 ¤ & ⁄ ‹ Figure 2-1-8 Process unit mechanism 1 Main charger unit # DLP screw B 2 Charger wire...
Page 148 (2) Main charging (2-1) 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.
Page 149 (2-2) 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 Engine board Bias board MHVDR1 YC1-A4 YC8-10 YC-M MHVDR2...
Page 150 (3) Exposure The charged surface of the drum A is then scanned by the laser beam from the laser scanner unit B. Figure 2-1-11 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.
Page 151 (3-1) Laser scanner unit Diversion mirror Figure 2-1-12 Laser scanner unit 1 Laser diode ........... Emits diffused, visible laser. 2 Cylindrical lens ..........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.
Page 152 (3-2) 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.
Page 153 (4) 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.
Page 154 (5) 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.
Page 155 (6) 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. Figure 2-1-16 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.
Page 156 (6-1) Fuser unit mechanism Figure 2-1-17 Fuser unit mechanism 1 Heat roller 7 Heater lamp 2 Idle gear Z34 8 Thermal cutout 3 Exit gear Z23 9 Separator(s) 4 Idle gear Z18 0 Thermistor 5 Heat gear Z33 ! Exit pulley(s) 6 Press roller @ Lower exit roller 2-1-17...
Page 157 (7) 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.
Page 158 2-2-1 Electrical parts layout (1) Main unit D 4 % & Figure 2-2-2 Main unit 1 Main board (KP-5191) 7 Cooling fan 2 Engine board (KP-5238) 8 Registration clutch 3 Power supply board 9 Feed clutch A Power switch 0 MP feed clutch B Exit sensor ! MP paper sensor C AC Inlet...
Page 159 (2) Scanner unit Figure 2-2-2 Scanner unit 1 Operation board 2 CCD board (KP-5252) 3 Scanner board (KP-5063) 4 Inverter board 5 Scanner home position sensor 6 Scanner motor 7 Exposure lamp 2-2-2...
Page 160 2-3-1 Main board SDA [12:0] CPUA [31:0] SDRAM SDD [31:0] CPUD [31:0] (U14,15) Latch (U1) (U5,7,9) SDA [12:0] SDRAM DIMM SDD [31:0] slot Transceiver (YS2) (U4,6,8,10) ASIC CCDRD,CCDBED,CCDGOD, (U2) CCDSH,CCDCLP,CCDRS, Scanner I/F CCDCLK,CCDSW[1:0] (YC6) LA [22:5] VDFONSPL,OUTPEN. ROMA[4:2], Laser CODE VDATA,BDN ROMOEN[0], scanner unit...
Page 161 YC10 Figure 2-3-2 Main board silk-screen diagram 2-3-2...
Page 162 Connector Pin No. Signal Description Not used Not used Connected AUDIO AUDIO signal to the FAX +3.3 V 3.3 V DC power supply board Ground Address bus A13 Address bus A11 Address bus A9 Ground Address bus A6 Address bus A4 Address bus A2 Ground OP2IFn...
Page 163 Connector Pin No. Signal Description Ground Data bus D3 Connected Data bus D4 to the Data bus D5 compact Data bus D6 flash socket Data bus D7 CE1n CE1 signal Address bus A10 OE signal Address bus A9 Address bus A8 Address bus A7 3.3 V DC power supply Address bus A6...
Page 164 Connector Pin No. Signal Description Paper empty signal Select signal Connected CAN signal to the Not used parallel I/F Ground Ground INIT 5 V DC power supply Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground ARARM Ground ASFON Not used FAULT...
Page 165 Connector Pin No. Signal Description Ground CCDR Image data R (red) signal (analog) Connected to the scanner board SGND Ground SGND Ground Connected +3.3 V 3.3 V DC power supply to the +3.3 V 3.3 V DC power supply engine +5 V 5 V DC power supply board...
Page 166 2-3-2 Engine board Scanner Engine board (KP-5238) motor ISUMOTA, ISUMOTNA Scanner ISUMOTB, ISUMMOTONB board (KP-5063) Optional Main board LAMP , LAMPHI, LAMPLOW (KP-5191) RSTIN HPSWN PLGCLK Scanner board home +24V3 position Reset IC RSTN sensor Inverter board Exposure PLGDRN lamp PFMDRN PLGRDYN PFSEN, PFPFPER, PFCLK...
Page 167 YC15 YC11 YC10 YC13 YC14 YC12 Figure 2-3-4 Engine board silk-screen diagram 2-3-8...
Page 168 (1) Eraser lamp control circuit The CPU (U1) turns pin #86 (ERASER) of U1 to H level, transistors (Q18) turns on consequently, and the 24 V DC given at pin #1 of connector YC14 applies to the eraser lamps. The eraser lamps thus illuminate as the current flows through the eraser lamp, the pin #2 of connector YC14, resistors (R109, R110, and R111), transistor Q18 and the ground.
Page 169 (2) Heater lamp control circuit Activation of the heater lamp is dominated by the HEAT signal which is derived by the engine CPU (U1) at its pin #74. When its level is high, transistor Q8 turns on, photo-triac PC2 and triac TRC1 turn on simultaneously, and the heater lamp is applied with the primary AC voltage in turn.
Page 170 The AC power for the heater is applied in one of the five variations of the zero cross switchings as shown in Figure 2-3-7. Each variation is constituted with the unit of ten positive and negative envelops in five cycles, as obtained by varying the duration during which TRC1 turns on.
Page 171 Heater lamp turn-on pattern in 1 cycle (10 half waves) AC wave Variation No.1 (Duty 100 %) Zero − cross point Conductivity staus of Triac (TRC1) Variation No.2 (Duty 80 %) − Variation No.3 (Duty 60 %) − Variation No.4 (Duty 40 %) −...
Page 172 (3) Polygon motor control circuit The main controller board supplies the 2598.4 Hz clock pulse (PLGCLK) via the engine board to the PLL control IC (IC1) for the polygon motor. To begin printing, the engine CPU U1 turns PLGDR to H level, the PLL control IC (IC1) starts to revolve the polygon motor so that the revolution is 25,984 rpm which depends on the PLGCLK clock pulse.
Page 173 Connector Pin No. Signal Description SGND Ground OVSYNK OVSYNK signal Connected SGND Ground to the main RSTN RSTN signal board SGND Ground EGRN EGRN signal SDIR SDIR signal SBSY SBSY signal PDMASKN PDMASKN signal EGSI EGSI signal SCKN SCKN signal EGSO EGSO signal PLGCLK...
Page 174 Connector Pin No. Signal Description +24 V3 24 V DC power supply +24 V3 24 V DC power supply Connected PGND Ground to the bias PGND Ground board PAPERN Paper sensor: On/Off SWIN Cassette switch: On/Off RESIT Registration sensor: On/Off TONEREPY Toner sensor: On/Off +24 V2...
Page 175 Connector Pin No. Signal Description YC14 ERASPW 24 V DC power supply ERASERN Eraser lamp: On/Off Connected PGND Ground to the eraser lamp 2-3-16...
Page 176 2-3-3 Power supply board The power supply board provides the AC power input and DC power and outputs. The high voltage bias generator circuit is mounted on a separate board. A simplified schematic diagram is shown below. Power supply unit Power Current switch...
Page 177 • 100 V Q121 C103 Q122 C104 TRA1 NTC1 C101 C102 • 200 V Q121 C103 Q122 C104 TRA1 NTC1 C101 C102 Figure 2-3-10 Power supply board silk-screen diagram 2-3-18...
Page 178 2-3-4 Bias board The bias board contains the developing bias output circuit, registration sensor, paper empty sensor, and the cassette switch. It also provides a liaison connection to the high voltage board, power supply, and the toner sensor. Bias board (KP-5242) Engine board Toner TONEREPY...
Page 179 2-3-5 High voltage board The high voltage board contains the high voltage output circuit, interlock switch circuit as well as providing a liaison connection with the power supply board, bias board, and the engine board. High voltage board High voltage output circuit Engine board Main Bias board...
Page 180 (1) Interlock switch The interlock switch is located on the high voltage board and opened and closed in conjunction with the front cover or the front top cover via the interlock lever. This switch connects and disconnects the +24 V DC power supply line. If the front cover or the front top cover is open, the interlock switch is open, and the +24 V DC to the high voltage output circuit, bias board, engine board, and the power supply board is disconnected, deactivating the high voltage output, laser output, main motor output for safety.
Page 181 2-3-6 CCD board The CCD board consists mainly of a CCD sensor (U4) that scans an original. The CCD sensor (U4) is driven to scan an original by the CCD sensor control signals (CCDCLKN, SH_BW, SH_RGB, SW, SWN, CPN, and RSN) based on the clock for driving the CCD sensor (CCDCLK) supplied from the main board through the scanner board.
Page 182 Figure 2-3-17 CCD board silk-screen diagram Connector Pin No. Signal Description Ground Ground Connected Ground to the Color/monochro control signal scanner Color/monochro control signal board CCD shift signal Ground CCD CP signal Ground CCD RS signal Ground CCDCLK CCD clock signal Ground CCDCLKN CCD clock signal...
Page 183 2-3-7 Operation board The operation board consists of key switches and LEDs. The lighting of LEDs is determined by scan signals (SCAN0 to SCAN7) and LED lighting selection signals (LED0 to LED3) from the main board. The key switches operated are identified by the scan signals (SCAN0 to SCAN7) and the return signals (KEYIN0 to KEYIN7).
Page 184 Figure 2-3-19 Operator board silk-screen diagram Connector Pin No. Signal Description SGND Ground AUDIO AUDIO signal Connected +5 V 5 V DC power supply to the main FPRST FPRST signal board PANTXD PANTXD signal PANRXD PANRXD signal PANRTS PANRTS signal PANCTS PANCTS signal +3.3 V...
Page 185 2-3-8 Scanner board The scanner board consists of scanner driver circuit Q1 to Q5 and exposure lamp driver circuit U1, relays signals from engine board, main board, operation board, CCD board and optional document processor. Scanner board MOTA ISUMOTA MOTNA ISUMOTNA Driver Scanner...
Page 186 2DD-1 2-4-1...
Page 187 2DD-1 2-4-2...
Page 188 2DD-1 2-4-3...
Page 189 Wiring diagram To optional document processor GND/ GND 30/29 NC/NC 18/17 GND/SW 28/27 NC/NC 16/15 SWN/SH HPSWN 26/25 NC/NC 14/13 GND/CPN YC13 24/23 Optional DIMM slot NC/NC 12/11 GND/RSN 9/10 22/21 10/9 NC/SGND GND/CCDCLK 11/12 20/19 Scanner AUDIO/+5V GND/CCDCLKN 13/14 18/17 FPRST/PANTXD Home...

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