Minolta Di250 Service Manual
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Minolta Di250 Service Manual

Minolta Di250 Service Manual

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Di250
SERVICE MANUAL
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FIELD SERVICE

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  • Page 1 Di250 SERVICE MANUAL FIELD SERVICE...

  • Page 3: Safety Precautions For Inspection And Service

    Safety Precautions for Inspection and Service When performing inspection and service procedures, observe the following precautions to prevent accidents and ensure utmost safety. Depending on the model, some of the precautions given in the following do not apply. Different markings are used to denote specific meanings as detailed below. Indicates a potentially hazardous situation which, if not avoided, WARNING could result in death or serious injury.
  • Page 4 4. Handle the power cord with care and never use a multiple outlet. • Do not break, crush or otherwise damage the power cord. Placing a heavy object on the power cord, or pulling or bending it may damage it, resulting in a possible fire or electric shock.
  • Page 5 CAUTION 1. Precautions for Service Jobs • A toothed washer and spring washer, if used originally, must be reinstalled. Omitting them may result in contact failure which could cause an electric shock or fire. • When reassembling parts, make sure that the correct screws (size, type) are used in the correct places.
  • Page 6 5. Precautions for the Laser Beam (Only for Products Employing a Laser) • Removing the cover marked with the following caution label could lead to possi- ble exposure to the laser beam, resulting in eye damage or blindness. Be sure to unplug the power cord before removing this cover.

  • Page 7: Other Precautions

    Other Precautions • To reassemble the product, reverse the order of disassembly unless otherwise specified. • While the product is energized, do not unplug or plug connectors into the circuit boards or harnesses. • The magnet roller generates a strong magnetic field. Do not bring it near a watch, floppy disk, magnetic card, or CRT tube.

  • Page 8: Used Batteries Precautions

    Used Batteries Precautions ALL Areas 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. Germany VORSICHT! Explosionsgefahr bei unsachgemäßem Austausch der Batterie. Ersatz nur durch denselben oder einen vom Hersteller empfohlenen ähnlichen Typ.
  • Page 9 INDEX (FIELD SERVICE) DIS/REASSEMBLY, ADJUSTMENT SWITCHES ON PWBs, TECH. REP . SETTINGS TROUBLESHOOTING...

  • Page 11: Dis/Reassembly, Adjustment

    Di250 DIS/REASSEMBLY, ADJUSTMENT 18605...

  • Page 13: Table Of Contents

    CONTENTS 1. SERVICE INSTRUCTIONS ................D-1 1-1. IDENTIFICATION OF FUSES AND CIRCUIT BREAKERS ....D-1 1-2. PRECAUTIONS FOR HANDLING THE LASER EQUIPMENT ....D-1 1-3. INSTRUCTIONS FOR HANDLING THE PWBs WITH MOS ICs ..... D-2 1-4. HANDLING OF THE IMAGING CARTRIDGE ......... D-2 1-5.
  • Page 14 3-5. ELECTRICAL/IMAGE ADJUSTMENT ............. D-32 (1) Touch Panel Adj................D-32 (2) Original Size Detecting Sensor Adjustment (F7-1) ......D-33 (3) Loop Adjustment ................D-34 (4) Edge Erase ..................D-35 (5) Registration (CD) (Printer) ............... D-38 (6) Registration (FD) (Printer) ............... D-40 (7) Registration (IR) ................

  • Page 15: Service Instructions

    SERVICE INSTRUCTIONS 1-1. IDENTIFICATION OF FUSES AND CIRCUIT BREAKERS 125V 3.15A Power Supply Unit 2 PU2 125V 5A 125V 5A Master Board Fusing Roller PWB-A 125V 3A (F1) Heater Lamp Fuse 125V 3A (F2) TF1 125V 15A 250V 1A (F3) 250V 1A (F4) Power Supply Unit 1 PU1 125V 10A (F1)

  • Page 16: Instructions For Handling The Pwbs With Mos Ics

    1-3. INSTRUCTIONS FOR HANDLING THE PWBs WITH MOS ICs The following precautions must be observed when handling P.W. Boards with MOS (Metal Oxide Semiconductor) ICs. During Transportation/Storage: • During transportation or when in storage, new P .W. Boards must not be indiscriminately removed from their protective conductive bags.

  • Page 17: Parts Which Must Not Be Touched

    1-5. PARTS WHICH MUST NOT BE TOUCHED (1) Red painted Screws Purpose of Application of Red Paint Red painted screws show that the assembly or unit secured can only be adjusted or set at the factory and should not be readjusted, set, or removed in the field. Note that when two or more screws are used on the part in questions, only one representa- tive screw may be marked with red paint.

  • Page 18: Disassembly/Reassembly

    DISASSEMBLY/REASSEMBLY 2-1. DOORS, COVERS, AND EXTERIOR PARTS: IDENTIFICATION AND REMOVAL PROCEDURES 1171D017AA 1171D019AB...
  • Page 19 Part Name Removal Procedure Remove No. 2, 4. → Remove two holding brackets. → ADF Glass Assy. Remove two screw caps. → Remove two screws that secure the ADF Glass Assy. Remove No. 17, 18. → Remove two screw caps. → Remove Rear Holding Bracket two screws that secure the Rear Holding Bracket.
  • Page 20 Part Name Removal Procedure Toner Bottle Cover Open the Toner Bottle Cover. → Unhook the dowels at four places of the Toner Bottle Cover. Harness Cover Remove one screw that secure the Harness Cover. Right Lower Cover Remove one screw that secure the Right Lower Cover. Open the Side Cover.

  • Page 21: Removal Of Circuit Boards And Other Electrical Compoments

    2-2. REMOVAL OF CIRCUIT BOARDS AND OTHER ELECTRICAL COMPOMENTS • When removing a circuit board or other electrical component, refer to “PRECAUTIONS FOR HANDLING THE PWBs” contained in SWITCHES ON PWBs and follow the corre- sponding removal procedures. • The removal procedures given in the following omit the removal of connectors and screws securing the circuit board support or circuit board.
  • Page 22 Symbol Part Name Removal Procedure Remove the Upper Cover. → Remove nine screws PWB-A Master Board and the MFB Box Cover. → Remove two screws and the MFB Box Assy. → PWB-A Remove the Connector Cover. → PWB-A PWB-A Cassette Main Board Slide out the MP Cassette.
  • Page 23 Symbol Part Name Removal Procedure Remove the Upper Cover. → Remove nine screws MFB Board and the MFB Box Cover. → UN2 Remove the PH Unit. → UN3 Polygon Motor Drive Board...

  • Page 24: Paper Take-Up/Transport Section

    2-3. PAPER TAKE-UP/TRANSPORT SECTION (1) Replacement of the Paper Take-Up Roll 1. Slide out the MP Cassette. 4108D033AA 2. Lock the Paper Lifting Plate. 3. Snap off one C-clip of the Paper Take-Up Roll Assy. 4. Slide the Paper Take-Up Roll Assy to the rear so that it can be pulled off the bushing at the front.

  • Page 25: Cleaning Of The Paper Dust Remover

    (3) Cleaning of the Paper Dust Remover 1. Open the Side Cover. 1171D021AA 2. Remove the Paper Dust Remover. 1167D007AB 3. Using a brush, whisk dust and dirt off the Paper Dust Remover. 1167D008AB (4) Cleaning of the Side Cover Using a soft cloth dampened with alcohol, wipe the Side Cover.

  • Page 26: Optical Section

    2-4. OPTICAL SECTION (1) Removal of the IR Unit 1. Remove the Original Cover, Front Holding Bracket, Upper Front Left Cover, Front Cover, Front Upper Cover, Rear Right IR Cover, Rear Left IR Cover, Rear Lower Cover, Rear Upper Cover, and Front Inside Cover. 2.

  • Page 27: Removal Of The Ph Unit

    8. Remove one screw and the Total Counter Mount- ing Bracket Assy. 9. Unplug one connector of the Control Panel. 10. Remove two screws that secure the front end of the frame. 1167D033AC 11. Remove five screws that secure the rear end of the frame.
  • Page 28 4. Remove two screws and the MFB Box Assy. 1167D028AA 5. Remove five screws and the Reinforcement Bracket. 6. Remove four screws and the handle. 1167D062AC 7. Unplug all connectors (13) from Master Board PWB-A. 1167D029AC 8. Remove the harness from all cord clamps (12) on the PH Base Plate.

  • Page 29: Removal Of The Ccd Unit

    (3) Removal of the CCD Unit 1. Remove the Original Glass. 2. Remove four screws and the Cover. 1167D014AB 3. Unplug two connectors of the CCD Unit. 4. Remove two screws and the CCD Unit. 1171D055AA NOTES 1. When removing the CCD Unit, remove only those screws and parts that are specified. (Remove the CCD Unit as one unit.) 2.

  • Page 30: Cleaning Of The Mirrors

    (5) Cleaning of the Mirrors 1. Remove the Original Glass. 2. Wipe clean the Mirrors with a soft cloth. 1167D017AC (6) Cleaning of the Lens 1. Remove the CCD Unit. 2. Wipe clean the Lens with a soft cloth. 1167D018AB (7) Cleaning of the Original Glass Wipe clean the Original Glass with a soft cloth.
  • Page 31 4. Remove one screw and unplug the connector of the Exposure Lamp. 5. Remove the flat cable of the Exposure Lamp. 1167D037AC 6. Remove one screw and the Lamp Fixing Bracket. 1167D035AD 7. Slide the Exposure Lamp to the front and remove Rear Front 1167D036AA...

  • Page 32: Removal Of The Scanner Drive Cables

    (9) Removal of the Scanner Drive Cables 1. Remove the Original Glass and ADF Glass Assy. 2. Remove the Left IR Cover. 3. Remove the Scanner. 4. Unhook the spring of the cable on the hook side, one each at the front and in the rear. 1167D044AB 5.

  • Page 33: Winding Of The Scanner Drive Cables

    (10) Winding of the Scanner Drive Cables Pulley H Pulley F Pulley E Pulley D Pulley G Pulley B Pulley C Pulley A 1167D047AB Front 1. Position the round bead of the Scanner Drive Cable in the pulley as shown. 1167D051AC 2.
  • Page 34 4. Slide the pulley to the front and install one mount- ing screw and one E-ring. 1167D073AA 5. Wind the bead end of the cable around pulley D and pulley C, then hook the bead onto the Adjust- able Anchor. Pulley D Pulley C 1167D056AC...
  • Page 35 9. Wind the hook end of the cable two turns counter- clockwise from the front to the rear. Cable on Hook End 1167D054AD 10. Wind the bead end of the cable four turns clock- Cable on wise from the rear to the front. Then, secure the Bead End cable with tape.
  • Page 36 14. Fit the hook end of the cable into the groove in the Cable Guide and hook the spring. Cable Guide 1167D077AA 15. Peel off the tape from the pulleys at the front and rear. 16. Mount the Scanner. 17. Mount the Original Size Detection Sensor. 18.

  • Page 37: Image Transfer Section

    2-5. IMAGE TRANSFER SECTION (1) Removal of the Image Transfer Roller 1. Open the Side Cover. 1167D006AD 2. Raise the Image Transfer Guide Plate. 1167D061AA 3. Remove the Image Transfer Roller and replace it. NOTE Do not touch the surface of the Image Transfer Roller directly with bare hands.
  • Page 38 2. Using a soft cloth dampened with alcohol, wipe the Pre-Image Transfer Guide Plate. NOTE Make sure the alcohol does not touch the surface of the Image Transfer Roller. 1167D010AA D-24...

  • Page 39: Developing Section

    2-6. DEVELOPING SECTION (1) Removal of the Imaging Cartridge 1. Open the Side Cover. 1171D021AA 2. Holding onto the green handles, slide the Imaging Cartridge part of the way out. 3. Then grasp the handle on top of the cartridge and pull the cartridge out.

  • Page 40: Fusing Section

    2-7. FUSING SECTION (1) Removal of the Fusing Unit 1. Open the Side Cover. 1171D021AA 2. Remove the Front Cover. 3. Unplug one connector at the front. 1167D020AB 4. Open the Exit Cover and unplug two connectors in the rear. 5.
  • Page 41 3. Snap off one E-ring and remove the Exit Cover. 1171D037AA 4. Unhook one spring to free the Idle Lever. 5. Remove two harnesses. 6. Remove two screws and the Rear Cover. 1171D038AA 7. Remove two screws and the rear Lamp Holder. 1171D040AA 8.
  • Page 42 12. Snap off one E-ring and remove the front Misfeed Clearing Lever Assy and bearing. 13. Remove the Fusing Right Roller. 1171D044AA 14. Snap off two retaining rings. 15. Remove one gear and two bushings. 16. Remove the Fusing Left Roller. 1171D045AA NOTE When the Fusing Left Roller is removed, it can cause...

  • Page 43: Adjustment

    ADJUSTMENT 3-1. ADJUSTMENT JIGS AND TOOLS USED 1. Scanner/Mirrors Carriage Positioning Jigs 1167D108AA 3-2. ADJUSTMENT REQUIREMENT LIST Adjustment Item Requirements Adjustment Point Ref. Page Touch Panel Adj. Automatically adjusted Control Panel D-32 Original Size Detecting Sensor ↑ ↑ D-33 Adjustment ↑...

  • Page 44: Adjustment Of Belt Tension

    3-3. ADJUSTMENT OF BELT TENSION • Adjustment of the Scanner Motor Timing Belt 1. Remove the Original Glass. 2. Remove four screws and the Cover. 1167D014AB 3. Loosen the two screws that secure the Scanner Motor. Using a bar tension gage, pull the motor to the right with a tension of 1000 g ±50 g and, at the same time, tighten the mounting screws.

  • Page 45: Test Print

    3-4. TEST PRINT NOTES This function is used to make the following electrical and image adjustments: • Registration (CD) (Printer) • Registration (FD) (Printer) • Registration (IR) • Zoom Adjust (IR) Adjustment Procedure 1. Check that “Copy Track Mode” of “Copy Track” under “Admin.

  • Page 46: Electrical/Image Adjustment

    3-5. ELECTRICAL/IMAGE ADJUSTMENT (1) Touch Panel Adj. NOTE Make this adjustment after either of the following procedures have been performed: • Memory Clear • Control Panel replacement Adjustment Procedure 1. Call the Initial mode to the screen. (For details, see SWITCHES ON PWBs, TECH. REP.

  • Page 47: Original Size Detecting Sensor Adjustment (F7-1

    (2) Original Size Detecting Sensor Adjustment (F7-1) NOTE Make this adjustment after any of the following procedures have been performed: • Memory Clear • A faulty original size detection occurs • Replacement of the CCD Unit and Scanner parts (including the Exposure Lamp) •...

  • Page 48: Loop Adjustment

    (3) Loop Adjustment Requirement Adjust so that a correct loop is formed before the Synchronizing Rollers when paper is fed through. Adjust Mode Setting Value Loop Adjustment -5 to +5 NOTE This adjustment is to be made when any of the following symptoms occurs: variations in the amount of print leading edge void, paper skew, and misfeed.

  • Page 49: Edge Erase

    (4) Edge Erase 1. Leading Requirement Adjust so that the erase width on the leading edge falls within the range of 0 to 5 mm. Adjust Mode Setting Range Edge Erase/Leading 0 to 5 1171D003AA NOTE This adjustment must be made when the PH Unit has been replaced and after Registration (CD/FD) (Printer) has been made.
  • Page 50 2. Trailing Requirement Adjust so that the erase width on the trailing edge falls within the range of 0 to 5 mm. Adjust Mode Setting Range Edge Erase/Trailing 0 to 5 1171D004AA NOTE This adjustment must be made when the PH Unit has been replaced and after Registration (CD/FD) (Printer) has been made.
  • Page 51 3. Right/Left Requirement Adjust so that the erase width on the right/left edge falls within the range of 0 to 5 mm. Adjust Mode Setting Range Edge Erase/Right/Left 0 to 5 1171D005AA NOTE This adjustment must be made when the PH Unit has been replaced and after Registration (CD) (Printer) have been made.

  • Page 52: Registration (Cd) (Printer

    (5) Registration (CD) (Printer) Requirement Adjust so that width A on the test pattern output falls within the following range. 1171D006AA Specification Adjust Mode Setting Range 1-Sided: 10 ±2.0 mm Registration (CD) -4.0 to +4.0 2-Sided: 10 ±3.0 mm NOTE This adjustment must be made when the PH Unit has been replaced and, for 2-sided, after Registration (CD) (Printer) for each paper source for 1-sided and Registration (FD) (Printer) have been made.
  • Page 53 3. Call the Adjust mode to the screen. 4. Touch [Printer] and [Registration (CD)], in that order. 5. Select the paper source for which the adjustment is to be made. 6. Press the Clear key to clear the current setting. 7.

  • Page 54: Registration (Fd) (Printer

    (6) Registration (FD) (Printer) Requirement Adjust so that width A on the test pattern output falls within the following range. 1171D007AA Specification Adjust Mode Setting Range 10 ±2.0 mm Registration (FD) -26 to +26 NOTE This adjustment must be made when the PH Unit has been replaced and after Registration (CD) (Printer) has been made.
  • Page 55 3. Call the Adjust mode to the screen. 4. Touch [Printer] and [Registration (FD)], in that order. 5. Select the paper source for which the adjustment is to be made. 6. Press the Clear key to clear the current setting. 7.

  • Page 56: Registration (Ir

    (7) Registration (IR) 1. CD Requirement Place the test pattern output after the adjustments of Registration (CD and FD) (Printer) have been com- pleted on the Original Glass and make a copy of it. Adjust so that width A on the test pattern copy falls within the following range.
  • Page 57 4. Call the Adjust mode to the screen. 5. Touch [IR], [Registration], and [CD], in that order. 6. Press the Clear key to clear the current setting. 7. Enter the new setting value from the 10-Key Pad. Setting Instructions If width A is wider than specifications, make the setting value smaller than the current one. If width A is narrower than specifications, make the setting value greater than the current one.
  • Page 58 2. FD Requirement Place the test pattern output after the adjustments of Registration (CD and FD) (Printer) have been com- pleted on the Original Glass and make a copy of it. Adjust so that width A on the test pattern copy falls within the following range.
  • Page 59 4. Call the Adjust mode to the screen. 5. Touch [IR], [Registration], and [FD], in that order. 6. Press the Clear key to clear the current setting. 7. Enter the new setting value from the 10-Key Pad. Setting Instructions If width A is wider than specifications, make the setting value smaller than the current one. If width A is narrower than specifications, make the setting value greater than the current one.

  • Page 60: Zoom Adjust (Ir

    (8) Zoom Adjust (IR) 1. CD Requirement 1. The difference should be within ±1.0% of the actual length. 2. Adjust so that the following specifications are satisfied with a scale length of 300 mm. Zoom Ratio Specification Adjust Mode Setting Range Full size (×1.000) 300 ±3.0 mm Zoom Adjust (CD)
  • Page 61 3. Call the Adjust mode to the screen. 4. Touch [IR], [Zoom Adjust], and [CD], in that order. 5. Press the Clear key to clear the current setting. 6. Enter the new setting value from the 10-Key Pad. Setting Instructions If the scale on the copy is longer than the actual scale, decrease the setting value.
  • Page 62 2. FD Requirement 1. The difference should be within ±1.0% of the actual length. 2. Adjust so that the following specifications are satisfied with a scale length of 200 mm. Zoom Ratio Specification Adjust Mode Setting Range Full size (×1.000) 200 ±2.0 mm Zoom Adjust (FD) 0.990 to 1.010...
  • Page 63 3. Call the Adjust mode to the screen. 4. Touch [IR], [Zoom Adjust], and [FD], in that order. 5. Press the Clear key to clear the current setting. 6. Enter the new setting value from the 10-Key Pad. Setting Instructions If the scale on the copy is longer than the actual scale, decrease the setting value.

  • Page 64: Ir-Erasure Width

    (9) IR-Erasure Width Requirement Set so that the erase width along four edges of the paper falls within the range of 0 to 3 mm. Adjust Mode Setting Range IR-Erasure Width 0 to 3 1171D062AA NOTE This adjustment must be made when a shadow is produced from the Original Scale. Adjustment Procedure 1.

  • Page 65: Other Adjustments

    3-6. OTHER ADJUSTMENTS • Focus-Positioning of the Scanner and 2nd/3rd Mirrors Carriage NOTE Make this adjustment after any of the following procedures has been performed: • After the Scanner Drive Cable has been replaced. • When the Scanner Fixing Bracket has been removed from the Scanner Drive Cable. •...
  • Page 66 NOTE Adjusting Screw If the Scanner does not run parallel with the 2nd/3rd Mirrors Carriage when the Scanner/Mirrors Carriage Positioning Jigs are in position, turn the adjusting screw for the rear Scanner Drive Cable as necessary. 1167D116AB If the Scanner/Mirrors Carriage Positioning Jigs are not available, follow these steps to make the adjustment.

  • Page 67: Miscellaneous

    MISCELLANEOUS 4-1. INSTALLATION OF THE KEY COUNTER SOCKET (OPTION) 1. Remove the Front Cover. 2. Remove the knockout from the Front Upper Cover. 3. Using two screws, secure the Counter Mounting Bracket. 1167D022AB 4. Route the harness of the Key Counter as shown. 1167D025AB 5.

  • Page 68: Remounting The Eeprom (Ic3A

    4-2. REMOUNTING THE EEPROM (IC3A) NOTES • If the Imaging Cartridge is not to be replaced after the Master Board has been replaced with a new one, be sure to remount the EEPROM (IC3A) from the old to new Master Board.
  • Page 69 Di250 SWITCHES ON PWBs, TECH. REP. SETTINGS 17196...
  • Page 71 CONTENTS 1. PRECAUTIONS FOR HANDLING THE PWBs ..........S-1 1-1. Precautions for Transportation and Storage ..........S-1 1-2. Precautions for Replacement and Inspection .......... S-1 2. CONTROL PANEL KEYS AND TOUCH PANEL ..........S-2 2-1. Control Panel Keys .................. S-2 2-2.
  • Page 72 8-1. Initial Mode Menu Screen ................ S-42 8-2. Initial Mode Function Setting Procedure ..........S-42 8-3. Settings in the Initial Mode ............... S-43...

  • Page 73: Precautions For Handling The Pwbs

    PRECAUTIONS FOR HANDLING THE PWBs 1-1. Precautions for Transportation and Storage • Before transporting or storing the PWBs, put them in protective conductive cases or bags so that they are not subjected to high temperature and are not exposed to direct sunlight. •...

  • Page 74: Control Panel Keys And Touch Panel

    CONTROL PANEL KEYS AND TOUCH PANEL For more details, see the Operator’s Manual shipped with the copier. 2-1. Control Panel Keys 1166O238EB 1. Touch Panel 7. Panel Reset Key • Shows various screens and messages. • Clears all settings made on the control panel, setting the copier back into the ini- 2.

  • Page 75: Explanation Of The Touch Panel

    2-2. Explanation of the Touch Panel (1) Basic Screen • The Basic screen is the initial screen that appears when the copier panel is reset or auto reset is activated. 1168P169CC 1. Supplementary Function Key 4. Function Display • Selects the corresponding menu screen, •...

  • Page 76: Warning Screens

    (2) Warning Screens • The warning screen may be a malfunction display, error display, warning display, or a caution display. <Malfunction Display> <Error Display> • A malfunction display is given when trou- • An error display is given when trouble ble occurs which cannot be corrected by occurs which can be corrected by the the user.

  • Page 77: Function Of Switches And Other Parts On Pwbs

    FUNCTION OF SWITCHES AND OTHER PARTS ON PWBs 3-1. PWB Location PWB-L PWB-A 1171S004AA 3-2. PWB-A (Master Board) 1167S002AA 1167S002AA Symbol Name Description Test Print Switch Used to run a test print cycle.

  • Page 78: Un1 (Control Panel

    3-3. UN1 (Control Panel) 1167S018AA 1167S018AA Symbol Name Description • Used to enter the initial mode. SW37 Warm Restart Switch • Used to restart the copier after a breakdown. 3-4. PWB-L (PPM Switching Board) 1167S026AB 1167S026AB Symbol Name Description Low-Speed Mode Used to make longer the paper-to-paper intervals as Selecting Switch a means of preventing the problem in which sheets of...

  • Page 79: Un2 (Mfb Board

    3-5. UN2 (MFB Board) 1167S027AA Symbol Name Description Forced Memory Clear Used when it is not possible to clear RAM by warm restart. Be careful about using these pins, as closing these pins clears all data including counter data. <Clearing Procedure> 1.
  • Page 80 <Data/Conditions Cleared by Reset Switches/Pins> Switches/Pins Side Initial Mode Power Forced Cover Switch Memory Total Trouble Data/Con- open/ OFF/ON Clear Clear Clear Reset ditions Cleared close Misfeed display — Malfunction display — — (other than Fusing) Malfunction display — — —...

  • Page 81: User's Choice Mode

    USER’S CHOICE MODE • The User’s Choice mode is used to make various settings according to the user’s needs. 4-1. User’s Choice Selection Screen 1167S009CB 4-2. User’s Choice Function Setting Procedure <Setting Procedure> 1. Press the Utility key on the control panel and then touch the “User’s Choice” key. 2.

  • Page 82: User's Choice Function Tree

    4-3. User’s Choice Function Tree Memory Recall Mixed Original Detection Language Selected Original Copy Default Auto Paper / Auto Size Tray Priority Special Paper 2 • 4 in 1, Booklet Copy Zoom Auto Panel Reset Energy Save Mode Plug-In Counter, User’s Choice ID Key Reset Auto Shutt Off...

  • Page 83: Settings In The User's Choice Mode

    4-4. Settings in the User’s Choice Mode Touch Panel Setting (The default is Highlighted Display Memory Recall Select whether to enable (“ON”) or disable (“OFF”) the function that retains the image data even after the last copy paper has been fed out, allowing the user to recall the same image data.
  • Page 84 Touch Panel Setting (The default is Highlighted Display Original Copy Select the type of Original Copy setting selected automatically Default when the copier is turned ON or Panel Reset key pressed. If “Duplex only” is selected for “Simplex/Duplex” of the “Tech. Rep. Choice” func- tion, 1 1 is not displayed.
  • Page 85 Touch Panel Setting (The default is Highlighted Display Auto Panel Reset Specify the default exposure mode selected automatically when power is turned ON or the Panel Reset key pressed. 30 seconds 2 min 1 min 3 min 5 min No Reset Energy Save Mode Set the time it takes the copier to enter the Energy Saver mode after a copy cycle has been completed or the last key operated.
  • Page 86 Touch Panel Setting (The default is Highlighted Display 4 in 1 Copy Order Specify the default copying order in the 4in1 mode. Density Priority Specify the default exposure mode selected automatically when power is turned ON or the panel Reset key pressed. <Density>...
  • Page 87 Touch Panel Setting (The default is Highlighted Display Intelligent Sorting When the system is equipped with a finishing option and the ADF is being used, select whether to turn “ON” or “OFF” the function that automatically switches between Sort and Non-Sort according to the number of originals loaded in the ADF.

  • Page 88: Tech. Rep. Mode

    TECH. REP. MODE • This mode is used by the Tech. Rep. to set, check, adjust, and/or program various ser- vice functions. 5-1. Tech. Rep. Mode Menu Screen 1171S005CA 5-2. Tech. Rep. Mode Function Setting Procedure <Setting Procedure> 1. Set the copier into the Tech. Rep. mode by the following method: •...

  • Page 89: Tech. Rep. Mode Setting Tree

    5-3. Tech. Rep. Mode Setting Tree Auto Paper Configuration FLS Paper Simplex/Duplex System Set Dry Key Set Function Limit Special Image Quality Edge Erase Loop Adjustment Printer Image Density Tech. Rep. Choice ATDC Sensor Gain VG Adjust Original Stop Position ADFR Registration Loop Registration...

  • Page 90: Settings In The Tech. Rep. Mode

    5-4. Settings in the Tech. Rep. Mode (1) Tech. Rep. Choice • This function allows the Tech. Rep. to make the various settings and adjustments. <Function> 1. System Set 2. Printer 3. ADFR 4. Scan-through ADF <Setting Procedure> 1. Touch [Tech. Rep. Choice] to open a screen to Tech. Rep. Choice. 2.
  • Page 91 Tech. Rep. Mode Tech. Rep. Choice Touch Panel Setting (The default is Highlighted Display Dry Key Set Select whether to display the Dry key for “User Management” of Utility. If the key is to be displayed, select whether to dry only the Scanner or both Scanner and Drum.

  • Page 92: Tech. Rep. Choice

    Tech. Rep. Mode Tech. Rep. Choice Touch Panel Setting (The default is Highlighted Display Image Density Set the image density for the printer. The value set for this function becomes the central value of “Print Exposure” of User’s Choice. -2............
  • Page 93 Tech. Rep. Mode Tech. Rep. Choice <Scan-through ADF> Touch Panel Setting (The default is Highlighted Display Registration Adjust registration in the main and sub scanning directions of the ADF. Main scaning (CD) -72 dot......... +72 dot Smaller Greater Sub scaning (FD) -127 dot....

  • Page 94: System Input

    (2) System Input • This function allows the Tech. Rep. to change the fixed zoom ratios, set the paper size, define the marketing area, configure for the Key Counter, and input the telephone num- ber. <Setting Procedure> 1. Touch [System Input] to open the System Input menu screen. 2.

  • Page 95: Administrator # Input

    (3) Administrator # Input • This function allows the Tech. Rep. to set the administrator number that is used to open the “Admin. Management” screen of Utility. <Setting Procedure> 1. Touch [Administrator # Input] to open the Administrator # Input menu screen. 2.
  • Page 96 Tech. Rep. Mode Counter Touch Panel Operation Display Shows the number of misfeeds that have occurred in different parts of the system, together with rates of occurrence (MCBJ, MDBJ). Each counter may be reset to zero independently of the others: <Jam Counter 1/5>...
  • Page 97 Tech. Rep. Mode Counter Touch Panel Operation Display <Jam Counter 4/5> Display Description Finisher Set Transport No. of misfeeds that occurred in the Finisher Tray MDBJ Average no. of document transport sequences for each docu- ment misfeed: ADFR Document Passage Counter ÷ ADFR Jam Counter ADF (Scan-through No.
  • Page 98 Tech. Rep. Mode Counter Touch Panel Operation Display <PM Counter 3/3> Display Description SADF No. of single feeds IR 1 No. of scan motions (for 60k) IR 2 No. of scan motions (120k) 2 Bin Tray No. of cycles of feeding paper out into Job Tray Toner Pages No.
  • Page 99 Tech. Rep. Mode Counter Touch Panel Operation Display Trouble <Trouble Counter 5/5> Malfunction Malfunction Location Location Code Code C133B Communication Error (Option) C13F0 HSYNC (SOS) C13C0 I/C Initial Error C18XX Printer Controller Error C13D0 EEPROM <Clearing a Count> Touch the item key whose count is to be cleared and press the Clear key.

  • Page 100: Function

    (5) Function • This function allows the Tech. Rep. to run the various function tests and make adjust- ments. <Setting Procedure> 1. Touch [Function] to open the Function menu screen. 2. Select the particular function to be run. Tech. Rep. Mode Function Touch Panel Operation...

  • Page 101: I/O Check

    Tech. Rep. Mode Function Touch Panel Operation Display <Test Pattern> Outputs a test pattern. If 2-sided is specified, the system outputs a test pattern in the 2- sided mode. <Procedure> 1. Touch the desired paper source key. (Touch [Duplex] for test pat- tern output on paper fed from the Duplex Unit.) If the paper source is not loaded with paper, an Add Paper mark appears at that source.

  • Page 102: Movement Check

    (7) Movement Check • This function runs a specified mechanism to check for operation. <Setting Procedure> 1. Touch [Movement Check] to open the Movement Check menu screen. 2. Touch the desired subfunction. Tech. Rep. Mode Movement Check Touch Panel Operation Display ADF Paper Pas- Feeds paper through the ADF in the specified mode to check for cor-...

  • Page 103: Rd Mode (Smart

    (8) RD Mode (SMART) “SMART” is displayed for the inch areas. Tech. Rep. Mode RD Mode Touch Panel Setting Display RD Mode For making the initial settings of the copier for the Data Terminal. ID Code Enter a 7-digit ID code (0000001 to 9999999) from the 10-Key Pad to enable making the following settings.
  • Page 104 Tech. Rep. Mode RD Mode Touch Panel Setting (The default is Highlighted Display RD Mode RAM Clear Reinitializes the Data Terminal. Common DT Set the following functions. Dial Mode Select the type of telephone line of the user. Pulse Tone Auto Receive Choose “Yes”...

  • Page 105: Rom Version

    (9) ROM Version Tech. Rep. Mode ROM Version Touch Panel Operation Display ROM Version Displays the current ROM version information. No version information is displayed for a machine that is not con- nected to the system. <Procedure> 1. Touch [ROM Version] to open the ROM Version screen. 2.

  • Page 106: Level History

    (10) Level History • This function is used to show the various level histories which are changed according to the operating conditions of the copier and user requirements. Tech. Rep. Mode Level History Touch Panel Setting Display Level History <ATDC Set> Shows the voltage set by ATDC Sensor Automatic Adjustment (F8).

  • Page 107: Security Mode

    SECURITY MODE • This function allows the Tech. Rep. to make various settings. 6-1. Security Mode Menu Screen 1167S011CA 6-2. Security Mode Function Setting Procedure <Setting Procedure> 1. Set the copier into the Tech. Rep. mode by one of the following methods: A.

  • Page 108: Settings In The Security Mode

    6-3. Settings in the Security Mode Tech. Rep. Mode Security Mode Touch Panel Setting (The default is Highlighted Display Total Counter Select the conditions by which the Total Counter count is increased. 1 count per 1 copy cycle (normal mode) Mode 1 Multiple count-up according to paper size and Mode 2...
  • Page 109 Tech. Rep. Mode Security Mode Touch Panel Setting (The default is Highlighted Display Copy Kit Counter Select whether to set the count or not for the Copy Kit Counter and select whether to inhibit the initiation of a new copy cycle or not when the Current value reaches Set value.
  • Page 110 Tech. Rep. Mode Security Mode <Count-up Table> Copying 1-Sided 2-Sided Size Size other Size other than those Set size than those Set size Total Mode Mode Mode Mode Total (mechanical, elec- tronic) Size (electronic) 2-Sided Total (electronic) 2-Sided Size (electronic) Total by account Size by account Counting...

  • Page 111: Adjust Mode

    ADJUST MODE • Adjust mode is for adjustments to be made before shipment at the factory. As a rule, use this mode only when MFB Board UN2, or EEPROM (IC3A) on Master Board PWB-A has been replaced with a new one. 7-1.

  • Page 112: Adjust Mode Function Tree

    7-3. Adjust Mode Function Tree Registration (CD) Printer Registration (FD) Adjust Registration Zoom Adjust 7-4. Settings in the Adjust Mode (1) Printer • This function is used to enter the adjustment values as they relate to the printer. <Setting Procedure> 1.
  • Page 113 (2) IR • This function is used to enter the adjustment values as they relate to the IR. <Setting Procedure> 1. Touch [IR] to open the IR screen. 2. Select the desired subfunction. Tech. Rep. Mode Adjust Touch Panel Setting (The default is Highlighted Display Registration...

  • Page 114: Initial Mode

    INITIAL MODE • Initial mode is used to initialize the various service functions. 8-1. Initial Mode Menu Screen 1167S013CB 8-2. Initial Mode Function Setting Procedure <Setting Procedure> 1. Enter the Initial mode by pressing the following keys in this order: Warm Restart Enter “3”...

  • Page 115: Settings In The Initial Mode

    8-3. Settings in the Initial Mode Tech. Rep. Mode Initial Touch Panel Setting (The default is Highlighted Display Memory Clear Clears all data except the electronic counters, Adjust, Copy Track- related, and DT-related settings. Touch Panel Adj. Corrects deviation in the sensitive area of the Touch Panel. <Procedure>...

  • Page 117: Troubleshooting

    Di250 TROUBLESHOOTING 14413...
  • Page 119 CONTENTS 1. INTRODUCTION ..................... T-1 1-1. General Precautions ................T-1 1-2. How to Use This Book ................T-1 1-3. Reading the Text ..................T-1 2. I/O CHECK ...................... T-2 2-1. Controlled Parts Check Procedure ............T-2 2-2. I/O Check List ..................T-3 3.
  • Page 120 (1) Blank Copy ..................T-46 (2) Black Copy ..................T-46 (3) Low Image Density ................T-47 (4) Foggy Background ................T-48 (5) Black Streaks or Bands ..............T-49 (6) Black Spots ..................T-49 (7) Blank Streaks or Bands ..............T-50 (8) Void Areas ..................

  • Page 121: Introduction

    INTRODUCTION 1-1. General Precautions 1. When servicing the copier with its covers removed, use utmost care to prevent your hands, clothing, and tools from being caught in revolving parts including the chains and gears. When servicing the copier with the Rear Cover removed, be sure to fit the inter- lock switch actuating jig in position.

  • Page 122: I/O Check

    I/O CHECK 2-1. Controlled Parts Check Procedure To allow the Tech. Rep. to easily and safely determine whether a particular controlled part is fully operational, this copier provides the following provision: checking the data of the input port of the board IC with the copier in the standby state (including a misfeed, malfunc- tion, and closure failure condition) allows the Tech.

  • Page 123: I/O Check List

    2-2. I/O Check List <I/O Check Screens> • The following screens are only typical and the input data shown does not necessarily represent the actual one. 1171T002CA Printer Backup Next 1171T030CA 1171T004CA Next Backup Next Backup 1171T005CA 1171T006CA...
  • Page 124 <I/O Check List> Operation Characteris- Input Port CN/PJ tics/Panel Display Symbol Panel Display Parts/Signal Name Board PC13 Scanner (L) Scanner Home Posi- Blocked Unblocked HGB — —— CN7HGB-27 tion Sensor 2 Board PC12 Scanner (HP) Scanner Home Posi- At home Not at —...
  • Page 125 Operation Characteris- Input Port CN/PJ tics/Panel Display Symbol Panel Display Parts/Signal Name Board Take-up Take-Up Sensor Paper Paper not Cassette PJ3A-2B Drawer present present Main Board Paper Paper Near Empty Unblocked Blocked PJ3A-11B PWB-A: Near Sensor PF-108/ Empty PF-110 Paper Paper Empty Sensor Paper not Paper PJ3A-5B...
  • Page 126 Operation Characteris- Input Port CN/PJ tics/Panel Display Symbol Panel Display Parts/Signal Name Board Lift Lift-Up Sensor 1 At upper Not at LCC Main P74/ CN4A-6 Level 1 limit upper limit Board ANI4 PWB-A: Lift Lift-Up Sensor 2 At upper Not at P73/ CN4A-9 PF-106...
  • Page 127 Operation Characteris- Input Port CN/PJ tics/Panel Display Symbol Panel Display Parts/Signal Name Board SIDE Doors/ Side Cover Set Sen- When When LCC Main P34/ CN3A-12 Toner Side opened closed Board Cover PWB-A FRONT LCC Set Sensor Out of In position P35/ CN6A-4 Front...

  • Page 128: Paper Transport Failure

    PAPER TRANSPORT FAILURE 3-1. Paper Misfeed When a paper misfeed occurs, the Touch Panel shows the corresponding message, mis- feed location, and paper location. Misfeed location display display Paper location 18 17 18 17 20 19 20 19 22 21 22 21 1167T007CA 1167T008CA...
  • Page 129 If a communications error occurs between UN2 and PWB-A during a copy cycle, it forces a paper misfeed condition ( displayed on the Touch Panel). If that happens, check the circuit between UN2 and PWB-A for proper connection and, if it is intact, replace the board.

  • Page 130: Size Error

    3-2. Size Error The following warning screen appears after a misfeed display has been reset if the actual size of the paper loaded in a paper source differs from the paper size set for that particular paper source. [1st to 5th Drawer] [Manual Bypass] 1171T009CA 1171T010CA...

  • Page 131: Misfeed Detection Sensor Layout

    3-3. Misfeed Detection Sensor Layout Paper Exit Sensor PC3 Synchronizing Roller Sensor PC2 Manual Feed Paper Take-Up Sensor PC8 1167T021AA T-11...

  • Page 132: Types Of Misfeed Detection And Detection Timings

    3-4. Types of Misfeed Detection and Detection Timings • The following are the types of misfeed detection and detection timings for different mis- feed locations. NOTE For misfeed detection types and detection timings of options, see the relevant option ser- vice manual.
  • Page 133 <Separator Misfeed> Timer Value Type Detection Timing T (sec.) Leading edge PC3 is not blocked (L) even after the lapse of T sec. detection by Paper after PC2 has been unblocked (H). 1.92 Exit Sensor PC3 Trailing edge PC2 is not blocked (L) even after the lapse of T sec. 4.20 detection by Syn- after it has been unblocked (H).

  • Page 134: Misfeed Troubleshooting Procedures

    3-5. Misfeed Troubleshooting Procedures (1) Copier Take-Up Misfeed Relevant Electrical Parts Paper Take-Up Solenoid SL1 Master Board PWB-A Synchronizing Roller Sensor PC2 Cassette Main Board PWB-A 1171C10TAA T-14...
  • Page 135 <Copier Take-Up Misfeed Troubleshooting Procedure> Symptom Step Check Item Result Action Paper is not taken Does the paper being used Instruct the user to use the up at all. meet the product specifica- paper that meets product tions? specifications. Is the paper curled, wavy, or YES Change the paper.

  • Page 136: Manual Bypass Take-Up Misfeed

    (2) Manual Bypass Take-Up Misfeed Relevant Electrical Parts Manual Feed Paper Take-Up Clutch CL3 Manual Feed Paper Take-Up Sensor PC8 Synchronizing Roller Sensor PC2 Master Board PWB-A 1167C01TAA T-16...
  • Page 137 <Manual Bypass Take-Up Misfeed Troubleshooting Procedure> Symptom Step Check Item Result Action Paper is not taken Does the paper being used Instruct the user to use the up at all. meet the product specifica- paper that meets product tions? specifications. Is the paper curled, wavy, or YES Change the paper.

  • Page 138: Separator/Fusing Misfeed

    (3) Separator/Fusing Misfeed Relevant Electrical Parts Paper Exit Sensor PC3 Synchronizing Clutch CL1 Synchronizing Roller Sensor PC2 Master Board PWB-A 1170C03TAB T-18...
  • Page 139 <Separator/Fusing Misfeed Troubleshooting Procedure> Symptom Step Check Item Result Action Paper is at a stop Are the Synchronizing Rollers YES Clean or change the Synchro- near the Synchro- deformed, worn, or dirty with nizing Rollers. nizing Rollers. paper dust? Is a good length of loop formed Select the following functions before the Synchronizing Roll- in this order: Tech.
  • Page 140 (4) Paper Take-Up/Transport Misfeed (PF-108/PF-110) Relevant Electrical Parts Paper Take-Up Solenoid SL1 Master Board PWB-A Take-Up Sensor S3 Cassette Main Board PWB-A Synchronizing Roller Sensor PC2 Cassette Main Board PWB-A: PF-108/PF-110 Transport Clutch CL2 1171C11TAA T-20...

  • Page 141: Paper Take-Up/Transport Misfeed

    <Paper Take-Up/Transport Misfeed (PF-108/PF-110) Troubleshooting Procedure> Symptom Step Check Item Result Action Paper is not taken Does the paper being used meet Instruct the user to use the paper up at all. the product specifications? that meets product specifications. Is the paper curled, wavy, or YES Change the paper.
  • Page 142 (5) Paper Take-Up/Transport Misfeed (PF-106) Relevant Electrical Parts Take-Up Clutch 1 P1CL Synchronizing Roller Sensor PC2 Take-Up Clutch 2 P2CL Transport Clutch CL2 Paper Empty Sensor 1 PPS1 Take-Up Sensor S3 Paper Standby Position Sensor S1 LCC Main Board PWB-A: PF-106 Separator Clutch BCL Cassette Main Board PWB-A: PF-108/PF-110 Registration Clutch RCL...
  • Page 143 Symptom Step Check Item Result Action • Paper is not Is PPS1 fully operational? Check YES Perform steps 6 and onward. taken up at all. the input data using I/O Check. • Paper is at a Does the voltage across CN3A-2 YES Change PWB-A (PF-106), stop before the on PWB-A (PF-106) and GND...
  • Page 144 Symptom Step Check Item Result Action • Paper is at a Is the Vertical Transport YES Clean or change the Verti- stop at the verti- Roller or Roll deformed, cal Transport Roller or Roll. cal transport worn, or dirty with paper section.
  • Page 145 (6) Duplex Turnover/Take-Up Misfeed (AD-10) Relevant Electrical Parts Paper Exit Sensor PC3 Duplex Unit Transport Motor M2 Duplex Unit Transport Sensor PI1 Manual Feed Paper Take-Up Clutch CL3 Synchronizing Roller Sensor PC2 Master Board PWB-A Switchback Motor M1 Duplex Main Board PWB-A: AD-10 1167C02TAA T-25...

  • Page 146: Duplex Turnover/Take-Up Misfeed

    <Duplex Turnover/Take-Up Misfeed (AD-10) Troubleshooting Procedure> Symptom Step Check Item Result Action Paper is at a stop Is the Paper Exit Roller YES Clean or change the Paper Exit near the exit sec- deformed, worn, or dirty with Roller. tion. paper dust? Is PC3 fully operational? Check Check the PC3 actuator for oper-...

  • Page 147: Malfunction

    MALFUNCTION The copier CPU has a function that self-diagnoses the copier conditions. On detection of a malfunction, the corresponding code representing a particular malfunction name, location, and details as listed below is displayed on the Touch Panel together with a Tech. Rep. call message.
  • Page 148 Code Description Detection Timing C0650 Faulty Scanner Home Position <The Power Switch is turned ON, Original Cover lowered, or Sensor 1 PC12 Start key pressed when the Scanner is at its home position> • PC12 is not unblocked (H) even when the Scanner moves 10 mm to the left.
  • Page 149 Code Description Detection Timing • In an F8 (ATDC control voltage automatic adjustment) C0F33 ATDC adjustment failure operation, the adjustment of ATDC control voltage is not completed within 1 min. after E1 sampling. • In an F8 operation, the control voltage falls outside the range of 5.39V to 8.15V.

  • Page 150: Troubleshooting Procedures By Malfunction Code

    4-2. Troubleshooting Procedures by Malfunction Code (1) C0000: M2 Malfunction C0010: M1 Malfunction C0045: M3 Malfunction C004C: M8 Malfunction C004E: M4 Malfunction C0070: M6 Malfunction Relevant Electrical Parts I/C Motor M1 Main Hopper Toner Replenishing Motor M6 Main Motor M2 Ozone Fan Motor M8 Fusing Cooling Fan Motor M3 Toner Bottle Home Position Sensor PC10...
  • Page 151 C0000 Step Check Item Result Action Does M2 turn after the malfunction Check various parts for possible has been reset? overload. Check M2 for operation. Change PWB-A. Does the voltage across PJ1-3 of M2 and GND change from DC5V to DC0V after the malfunction has been reset? Does the voltage across PJ1-4 of...
  • Page 152 C004C Step Check Item Result Action Does M8 turn after the malfunction Check various parts for possible has been reset? overload. Check M8 for operation. Change PWB-A. Does the voltage across CN41-3 on the PWB-A side and GND change from DC0V to DC24V after the mal- function has been reset? Does the “C004C”...

  • Page 153: C0500: Warming-Up Failure C0510: Abnormally Low Fusing Temperature C0520: Abnormally High Fusing Temperature

    (2) C0500: Warming-up Failure C0510: Abnormally Low Fusing Temperature C0520: Abnormally High Fusing Temperature Relevant Electrical Parts Fusing Roller Heater Lamp H1 Fusing Roller Heater Lamp Fuse TF1 Fusing Roller Thermistor TH1 Side Cover Interlock Switch 2 S3 Fusing Roller Thermostat TS1 Power Supply Unit 1 PU1 Master Board PWB-A 1171C08TAB...
  • Page 154 C0500, C0510 Step Check Item Result Action Does H1 turn ON after the malfunc- Check TH1 for contamination or tion is reset? installation. Is there continuity across CN3-1 Check H1, TS1, and TF1 for conti- and 2 on the Fusing Unit end with nuity.

  • Page 155: C0650: Faulty Pc12

    (3) C0650: Faulty PC12 C0651: Faulty PC13 Relevant Electrical Parts Scanner Home Position Sensor 1 PC12 BCR Board BCR Scanner Home Position Sensor 2 PC13 HGB Board HGB Scanner Motor M5 MFB Board UN2 Master Board PWB-A 1170C10TAB T-35...
  • Page 156 C0650, C0651 Step Check Item Result Action Is M5 energized? Check various parts for possible Select the following functions in this overload and, if they are okay, order: Tech. Rep. Mode → Move- change M5, BCR, HGB, UN2, or ment Check → Scanner. Then, PWB-A, in that order.

  • Page 157: C0991: Lift 1 Ascent Motion Failure

    (4) C0990: EMOT Malfunction C0991: Lift 1 Ascent Motion Failure C0995: HMOT Malfunction C0999: Lift 2 Ascent Motion Failure C099D: Communications Error Relevant Electrical Parts LCC Lift-Up Motor EMOT LCC Main Board PWB-A: PF-106 Lift-Up Sensor 1 LS1 Cassette Main Board PWB-A: PF-108/PF-110 Lift-Up Sensor 2 LS2 Cassette Main Board PWB-A LCC Transport Motor HMOT...
  • Page 158 C0990 Step Check Item Result Action Does “C0990” reappear even after Change PWB-A (PF-106), PWB-A EMOT has been replaced with a (PF-108/PF-110), PWB-A (Cas- new one? sette Main Board), or PWB-A, in that order. C0991 Step Check Item Result Action Is LS1 fully operational? Check the Perform step 3 and onward.
  • Page 159 C0999 Step Check Item Result Action Is LS2 fully operational? Check the Perform step 3 and onward. input data using I/O Check. Does the voltage across CN4A-9 on Change PWB-A (PF-106), PWB-A PWB-A (PF-106) and GND change (PF-108/PF-110), or PWB-A (Cas- to DC5V when LS2 is blocked and sette Main Board), in that order.

  • Page 160: C0F32: Faulty E1

    (5) C0F32: Faulty E1 C0F33: ATDC Adjustment Failure Relevant Electrical Parts ATDC Sensor E1 Master Board PWB-A 1171C04TAA C0F32, C0F33 Step Check Item Result Action Are PJ40, CN50, CN17, and PWB- Connect them properly. A PJ15A connected properly? Is the CN50 connection dirty? Clean.

  • Page 161: C10

    (6) C10 to C13 • These malfunctions are concerned with faulty symptoms as they relate to software, hard- ware, and communications. For remedial actions, change the board, check for cable con- nections, and turn the Power Switch OFF and ON. Code Action C1038 1.

  • Page 162: The Copier Does Not Turn On

    (7) The Copier Does not Turn ON. Relevant Electrical Parts Power Switch S1 Master Board PWB-A Side Cover Interlock Switch 1 S2 Control Panel UN1 Power Supply Unit 1 PU1 MFB Board UN2 Power Supply Unit 2 PU2 Symptom Step Check Item Result Action...

  • Page 163: Image Failure

    IMAGE FAILURE 5-1. Image Failure Troubleshooting Image failures have many possible causes. For troubleshooting, it is necessary to deter- mine whether a failure is attributable to: 1. A basic cause or any other cause 2. The input system (IR) or output system (engine). In this chapter, troubleshooting is divided into “initial checks”...
  • Page 164 6. Adjustment items (registration, focus, etc.) • Among the adjustment items given in DIS/REASSEMBLY, ADJUSTMENT, is there any adjustment that may remedy the image failure? 7. Input system (IR) or output system (engine)? • Run “F12” which can be selected as follows: Tech. Rep. Mode → Function. •...

  • Page 165: Troubleshooting Procedures By Image Failure

    5-3. Troubleshooting Procedures by Image Failure <Image Failure Samples> 1. Blank copy 2. Black copy 3. Low image density 4. Foggy background 5. Black streaks or bands 6. Black spots 7. Blank streaks or bands 8. Void areas 9. Smear on back 10.

  • Page 166: Blank Copy

    (1) Blank Copy Section Step Check Item Result Action Engine Is toner empty? Check Sub Hopper Toner Empty Switch S4 and change the Toner Bot- tle. Is the drive transmission mechanism to Check and change as necessary. the Developing Unit in good condition? Is the image transfer current terminal Check and change as necessary.

  • Page 167: Low Image Density

    (3) Low Image Density Section Step Check Item Result Action Engine Does the image get better when Change the paper. Instruct the a copy is made with new paper user on the storage of paper. loaded? Is toner empty? Check Sub Hopper Toner Empty Switch S4 and change the Toner Bottle.

  • Page 168: Foggy Background

    (4) Foggy Background Section Step Check Item Result Action Is sunlight or any other extrane- Protect the copier from extrane- —— ous light entering the copier? ous light. Engine Is the PC Drum dirty with foreign Clean the PC Drum. matter? Is the PC Drum charge voltage Check and change as neces-...

  • Page 169: Black Streaks Or Bands

    (5) Black Streaks or Bands Section Step Check Item Result Action Engine Is the PC Drum dirty? Clean the PC Drum. Has toner spilled from the I/C Clean the interior and change I/ inside of the copier? Is the PC Drum charge voltage Check and change as neces- terminal in good condition? sary.

  • Page 170: Blank Streaks Or Bands

    (7) Blank Streaks or Bands Section Step Check Item Result Action Engine Is the PC Drum dirty with foreign Clean the PC Drum. matter? Is the image transfer current ter- Check and change as neces- minal intact? sary. Is the Image Transfer Roller Change the Image Transfer dented or scratched? Roller.

  • Page 171: Smear On Back

    (9) Smear on Back Section Step Check Item Result Action Engine Is the Image Transfer Roller Clean or change. dirty? Has toner spilled from the I/C Clean the interior and change I/ inside of the copier? Are the Fusing Rollers dirty? Clean or change the Fusing Rollers.

  • Page 172: Rough Image

    (12) Rough Image Section Step Check Item Result Action Engine Is the Image Transfer Roller Clean or change. dirty? Is the image transfer current ter- Change HV1, I/C, PH Unit, or minal intact? PWB-A, in that order. Check and change as neces- sary.

  • Page 174: Connectors Layout

    CN No. LOCATION GRID 24-E CONNECTORS LAYOUT 10-I 12-I 2-A~B 13-K 12-I~J 19-G 13-J 19-H 12-K CN10 25-G 13-H~I CN11 2-E~F 14-J CN33 CN12 19-F~G 13-J CN31 CN13 23-H~I 12-K CN35 CN14 19-I 11~12-K CN15 21-E~F 13-K CN32 CN16 23-H 13-J CN34 CN17...

  • Page 175: Electrical Parts Layout

    SYMBOL PART NAME LOCATION GRID SYMBOL PART NAME LOCATION GRID BCR Board 11~13-A~E 1~2-C PWB-N RAM Board 21-A~B 3~4-E ELECTRICAL PARTS LAYOUT Fuser Frame Register CCD Board 18-B~D PWB-R 1~2-B Board Synchronizing Clutch 22-H~I 4-D~E Pre-Transfer Guide Plate PWB-R 1~2-I Register Board 1 Transport Clutch 20-H...
  • Page 178 DWG.NO. 1167-B001-0A TITLE WIRING DIAGRAM Di250 MODEL AC100/115/120/127/ VOLTAGE 200/220/240V EFFECTIVE XX0101 AND ONWARD MACHINE NO. Jan.1999 DATE ISSUED...
  • Page 180 DWG.NO. 1167-C101-0A TITLE CIRCUIT DIAGRAM Di180f/Di250f MODEL Di180/Di250 AC100/115/120/127/ VOLTAGE 200/220/240V EFFECTIVE XX0101 AND ONWARD MACHINE NO. Dec.1998 DATE ISSUED...
  • Page 181 DWG.NO. 1167-B201-0A TITLE CIRCUIT DIAGRAM PWB-A Di250 MODEL AC100/115/120/127/ VOLTAGE 200/220/240V EFFECTIVE XX0101 AND ONWARD MACHINE NO. Jan.1999 DATE ISSUED...
  • Page 182 Copyright 1999 MINOLTA Co., Ltd. Printed in Japan Use of this manual should be strictly supervised to avoid disclosure of confidential information. MINOLTA Co., Ltd. 1170-7991-11 99023000...

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